/* ============================================================
   کدآموز — styles.css — نسخه 2.1.0
   ساخته شده توسط mani++
   ============================================================ */

:root {
    --bg: #0a0a0b;
    --surface: #17171a;
    --surface-2: #1f1f24;
    --border: #33333d;
    --border-strong: #4a4a56;
    --text: #fafafa;
    --text-muted: #a8a8b3;
    --text-subtle: #82828f;
    --accent: #f4b942;
    --accent-soft: #ffcb5c;
    --accent-dim: rgba(244, 185, 66, 0.12);
    --danger: #ff6464;
    --success: #34d399;
    --info: #60a5fa;
    --font-sans: 'Vazirmatn', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.65;
    overflow-x: hidden;
    transition: background 0.3s, color 0.3s;
}
button { touch-action: manipulation; font-family: inherit; }

/* ============================================================
   اسپلش
   ============================================================ */
.splash {
    position: fixed; inset: 0; z-index: 4000;
    background: var(--bg);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 28px;
    transition: opacity 0.5s, visibility 0.5s;
}
.splash.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.splash-logo {
    display: flex; align-items: center; gap: 16px;
    animation: splashLogo 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes splashLogo { from { opacity: 0; transform: scale(0.5); } to { opacity: 1; transform: scale(1); } }
.splash-mark {
    width: 76px; height: 76px;
    background: var(--accent); border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    color: #000; font-size: 38px; font-weight: 800;
    box-shadow: 0 8px 40px rgba(244, 185, 66, 0.45);
}
.splash-name { font-size: 34px; font-weight: 700; color: var(--text); letter-spacing: -0.03em; }
.splash-tagline {
    font-size: 13px; color: var(--text-muted);
    letter-spacing: 0.06em;
    animation: splashTagline 1s ease-out 0.4s both;
}
@keyframes splashTagline { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ============================================================
   آنبوردینگ
   ============================================================ */
.onboarding {
    position: fixed; inset: 0; z-index: 3500;
    background: var(--bg);
    display: none; flex-direction: column;
    padding: 40px 24px 24px;
    overflow: hidden;
}
.onboarding.active { display: flex; animation: fadeIn 0.3s ease-out; }
.onboarding-slides {
    flex: 1; position: relative;
    display: flex; align-items: center; justify-content: center;
}
.onboarding-slide {
    position: absolute; inset: 0;
    display: none; flex-direction: column;
    align-items: center; justify-content: center;
    text-align: center; padding: 20px;
}
.onboarding-slide.active { display: flex; animation: onboardingSlideIn 0.4s ease-out; }
@keyframes onboardingSlideIn { from { opacity: 0; transform: translateX(24px); } to { opacity: 1; transform: translateX(0); } }
.onboarding-icon {
    width: 108px; height: 108px;
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-soft);
    margin-bottom: 32px;
}
.onboarding-icon svg { width: 46px; height: 46px; stroke-width: 1.5; }
.onboarding-slide h2 {
    font-size: 25px; font-weight: 700;
    margin-bottom: 14px; color: var(--text);
    letter-spacing: -0.02em;
}
.onboarding-slide p { font-size: 15px; line-height: 1.95; color: var(--text-muted); max-width: 320px; }
.onboarding-dots { display: flex; justify-content: center; gap: 8px; margin: 28px 0; }
.onboarding-dots .dot {
    width: 8px; height: 8px;
    background: var(--border-strong);
    border-radius: 4px;
    transition: background 0.3s, width 0.3s;
}
.onboarding-dots .dot.active { background: var(--accent); width: 26px; }
.onboarding-actions { display: flex; gap: 10px; }
.onboarding-skip {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 14px 24px; border-radius: 8px;
    font-size: 14px; font-weight: 500;
    cursor: pointer; min-height: 48px;
    touch-action: manipulation; flex-shrink: 0;
}
.onboarding-skip:active { background: var(--surface-2); border-color: var(--border-strong); }
.onboarding-next {
    flex: 1; background: var(--accent); color: #000;
    border: none; padding: 14px 24px;
    border-radius: 8px; font-size: 15px;
    font-weight: 700; cursor: pointer;
    min-height: 48px; touch-action: manipulation;
    letter-spacing: -0.01em;
}
.onboarding-next:active { background: var(--accent-soft); transform: scale(0.98); }

/* ============================================================
   صفحه‌ها
   ============================================================ */
.screen {
    display: none;
    max-width: 480px; margin: 0 auto;
    padding: 24px 20px 48px;
    min-height: 100vh;
}
.screen.active { display: block; animation: fadeIn 0.25s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ============================================================
   نوار بالا
   ============================================================ */
.topbar {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 36px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
    width: 34px; height: 34px;
    background: var(--accent); border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    color: #000; font-weight: 700; font-size: 17px;
    letter-spacing: -0.03em;
}
.brand-name { font-weight: 600; font-size: 15.5px; color: var(--text); letter-spacing: -0.01em; }
.topbar-right { display: flex; align-items: center; gap: 8px; }

.xp-chip {
    display: flex; align-items: center; gap: 4px;
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.3);
    padding: 4px 10px; border-radius: 4px;
    font-family: var(--font-mono); font-weight: 600;
    color: var(--accent-soft); flex-shrink: 0;
}
.xp-value { font-size: 12px; line-height: 1; }
.xp-label { font-size: 9px; opacity: 0.75; letter-spacing: 0.05em; }

.theme-btn {
    width: 36px; height: 36px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-muted);
    flex-shrink: 0; touch-action: manipulation;
    transition: background 0.15s, border-color 0.15s;
}
.theme-btn:active { background: var(--surface-2); border-color: var(--border-strong); }
.theme-btn svg { width: 18px; height: 18px; }

.cart-btn {
    width: 36px; height: 36px;
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.4);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--accent-soft);
    position: relative; flex-shrink: 0;
    touch-action: manipulation;
    transition: background 0.15s, transform 0.1s;
}
.cart-btn:active { background: rgba(244, 185, 66, 0.2); transform: scale(0.94); }
.cart-btn svg { width: 18px; height: 18px; }
.cart-badge {
    position: absolute; top: -5px; left: -5px;
    min-width: 17px; height: 17px;
    padding: 0 4px;
    background: var(--danger); color: #fff;
    font-size: 10px; font-weight: 700;
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
    border: 1.5px solid var(--bg);
}

/* ============================================================
   Hero
   ============================================================ */
.hero { margin-bottom: 32px; }
.hero-label {
    font-size: 12px; font-weight: 500;
    color: var(--accent-soft); letter-spacing: 0.1em;
    margin-bottom: 14px;
    display: flex; align-items: center; gap: 8px;
}
.hero-label::before {
    content: ''; width: 6px; height: 6px;
    background: var(--accent); border-radius: 50%;
}
.hero-title {
    font-size: 30px; font-weight: 600;
    line-height: 1.3; letter-spacing: -0.03em;
    margin-bottom: 12px; color: var(--text);
}
.hero-title em { font-style: normal; color: var(--accent-soft); }
.hero-subtitle { font-size: 14.5px; color: var(--text-muted); line-height: 1.85; }

/* ============================================================
   آمار
   ============================================================ */
.stats {
    display: grid; grid-template-columns: repeat(3, 1fr);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px; overflow: hidden;
    margin-bottom: 24px;
}
.stat { padding: 16px 12px; text-align: center; }
.stat:not(:last-child) { border-left: 1px solid var(--border); }
.stat-value {
    font-family: var(--font-mono);
    font-size: 22px; font-weight: 600;
    line-height: 1; margin-bottom: 8px;
    color: var(--text);
}
.stat-value .unit { font-size: 12px; color: var(--text-muted); font-weight: 500; margin-right: 2px; }
.stat-label { font-size: 11.5px; color: var(--text-muted); font-weight: 500; }

/* ============================================================
   کارت ادامه
   ============================================================ */
.continue-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px; margin-bottom: 16px;
    position: relative; overflow: hidden;
    cursor: pointer; transition: border-color 0.2s;
}
.continue-card::after {
    content: ''; position: absolute;
    top: 0; right: 0; width: 3px; height: 100%;
    background: var(--accent);
}
.continue-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.continue-meta { font-size: 11.5px; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; }
.continue-title { font-size: 17px; font-weight: 600; color: var(--text); letter-spacing: -0.01em; }
.continue-time {
    font-family: var(--font-mono);
    font-size: 12px; font-weight: 500;
    color: var(--text-muted);
    background: var(--bg);
    padding: 5px 9px; border-radius: 4px;
    border: 1px solid var(--border);
}
.progress-track { height: 3px; background: var(--border); border-radius: 2px; overflow: hidden; margin-bottom: 16px; }
.progress-fill { height: 100%; background: var(--accent); width: 0%; border-radius: 2px; transition: width 0.6s ease-out; }
.continue-btn {
    width: 100%; background: var(--accent); color: #000;
    border: none; padding: 14px 16px;
    border-radius: 4px; font-size: 14.5px;
    font-weight: 600; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    gap: 8px; letter-spacing: -0.01em;
    transition: background 0.2s;
}
.continue-btn:active { background: var(--accent-soft); }
.continue-btn svg { width: 16px; height: 16px; stroke-width: 2.5; }

/* ============================================================
   کارت تمرینگاه
   ============================================================ */
.playground-card {
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.08), rgba(244, 185, 66, 0.02));
    border: 1px solid rgba(244, 185, 66, 0.28);
    border-radius: 6px;
    padding: 18px 20px; margin-bottom: 32px;
    display: flex; align-items: center; gap: 14px;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s;
}
.playground-card:active { border-color: var(--accent); transform: translateY(-1px); }
.playground-card-icon {
    width: 42px; height: 42px;
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-soft);
    font-size: 20px; font-weight: 600;
    font-family: var(--font-mono);
}
.playground-card-body { flex: 1; min-width: 0; }
.playground-card-title { font-size: 15px; font-weight: 600; color: var(--text); letter-spacing: -0.01em; margin-bottom: 4px; }
.playground-card-text { font-size: 12.5px; color: var(--text-muted); line-height: 1.6; }
.playground-card-arrow { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; }

/* ============================================================
   بخش‌ها و لیست درس‌ها
   ============================================================ */
.section { margin-bottom: 28px; }
.section-head {
    display: flex; justify-content: space-between; align-items: baseline;
    margin-bottom: 4px; padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.section-title { font-size: 14.5px; font-weight: 600; color: var(--text); letter-spacing: -0.01em; }
.section-count { font-family: var(--font-mono); font-size: 12px; font-weight: 500; color: var(--text-subtle); }

.lesson {
    display: flex; align-items: center; gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer; transition: opacity 0.2s;
}
.lesson:last-child { border-bottom: none; }
.lesson.locked { opacity: 0.55; cursor: not-allowed; }
.lesson.locked .lesson-name { color: var(--text-muted); }
.lesson-num {
    font-family: var(--font-mono);
    font-size: 12.5px; font-weight: 500;
    color: var(--text-subtle);
    width: 24px; flex-shrink: 0;
    text-align: center;
}
.lesson-body { flex: 1; min-width: 0; }
.lesson-name { font-size: 14.5px; font-weight: 500; margin-bottom: 4px; letter-spacing: -0.01em; color: var(--text); }
.lesson-info { font-size: 12px; color: var(--text-muted); display: flex; gap: 10px; align-items: center; }
.lesson-info span + span::before { content: '·'; margin-left: 6px; margin-right: -2px; color: var(--text-subtle); }
.lesson-tag {
    font-family: var(--font-mono);
    font-size: 10.5px; font-weight: 600;
    padding: 4px 8px; border-radius: 3px;
    flex-shrink: 0; letter-spacing: 0.02em;
}
.tag-free { background: rgba(16, 185, 129, 0.14); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.35); }
.tag-lock { background: rgba(130, 130, 143, 0.1); color: var(--text-muted); border: 1px solid var(--border-strong); }
.tag-new { background: var(--accent-dim); color: var(--accent-soft); border: 1px solid rgba(244, 185, 66, 0.4); }
.tag-done { background: rgba(16, 185, 129, 0.14); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.35); }

.lesson.completed .lesson-num { color: #6ee7b7; font-size: 15px; font-weight: 700; }
.lesson.completed .lesson-name {
    color: var(--text-subtle);
    text-decoration: line-through;
    text-decoration-color: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   کارت مقاله
   ============================================================ */
.article-card { padding: 18px 0; }
.article-icon {
    width: 32px !important; height: 32px;
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.15), rgba(244, 185, 66, 0.05));
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 8px;
    display: flex !important;
    align-items: center; justify-content: center;
}
.article-icon svg { width: 16px; height: 16px; color: var(--accent-soft); stroke-width: 2; }
.tag-article { background: rgba(244, 185, 66, 0.14); color: var(--accent-soft); border: 1px solid rgba(244, 185, 66, 0.35); }

/* ============================================================
   بنر باز کردن
   ============================================================ */
.unlock-banner {
    display: flex; align-items: center; gap: 14px;
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.1), rgba(244, 185, 66, 0.02));
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 6px;
    padding: 18px 20px;
    margin: 24px 0 8px;
    cursor: pointer; touch-action: manipulation;
}
.unlock-banner-icon {
    width: 42px; height: 42px;
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 50%; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-soft);
}
.unlock-banner-icon svg { width: 20px; height: 20px; }
.unlock-banner-body { flex: 1; min-width: 0; }
.unlock-banner-title { font-size: 14.5px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.unlock-banner-text { font-size: 12px; color: var(--text-muted); }
.unlock-banner-arrow { width: 18px; height: 18px; color: var(--accent); flex-shrink: 0; }

/* ============================================================
   تنظیمات
   ============================================================ */
.settings-section { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); }
.font-size-control {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 10px;
}
.font-size-label { font-size: 13px; font-weight: 500; color: var(--text-muted); }
.font-size-buttons {
    display: flex; align-items: center; gap: 4px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px;
}
.font-btn {
    width: 36px; height: 36px;
    background: transparent; border: none;
    border-radius: 4px; color: var(--text);
    font-family: var(--font-mono);
    font-size: 13px; font-weight: 600;
    cursor: pointer; touch-action: manipulation;
}
.font-btn:active { background: var(--surface-2); }
.font-size-value {
    font-family: var(--font-mono);
    font-size: 12px; font-weight: 500;
    color: var(--text-muted);
    padding: 0 8px; min-width: 50px;
    text-align: center;
}
.reset-btn {
    width: 100%; background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 13px 16px; border-radius: 4px;
    font-size: 13px; font-weight: 500;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    gap: 8px; touch-action: manipulation;
    transition: border-color 0.2s, color 0.2s;
}
.reset-btn:active { border-color: rgba(255, 100, 100, 0.4); color: var(--danger); }
.reset-btn svg { width: 14px; height: 14px; }

/* ============================================================
   فوتر
   ============================================================ */
.footer {
    margin-top: 40px; padding-top: 20px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 11px; font-weight: 500;
    color: var(--text-subtle);
    letter-spacing: 0.08em;
    line-height: 1.8;
}
.footer-credit { margin-top: 8px; font-size: 10.5px; color: var(--text-subtle); letter-spacing: 0.04em; }
.footer-author { color: var(--accent-soft); font-weight: 600; letter-spacing: 0.02em; }

/* ============================================================
   نوار بالای درس
   ============================================================ */
.lesson-topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 16px;
    gap: 12px;
}
.lesson-topbar-title {
    flex: 1; font-size: 15px; font-weight: 600;
    color: var(--text); letter-spacing: -0.01em;
    text-align: center;
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; min-width: 0;
}
.lesson-topbar-title.dirty { color: var(--accent-soft); }
.lesson-topbar-spacer { width: 44px; flex-shrink: 0; }
.icon-btn {
    width: 44px; height: 44px;
    flex-shrink: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text);
    touch-action: manipulation;
    transition: background 0.15s, border-color 0.15s;
}
.icon-btn:active { background: var(--surface-2); border-color: var(--border-strong); }
.icon-btn svg { width: 20px; height: 20px; }

/* ============================================================
   محتوای درس
   ============================================================ */
.lesson-content { padding-bottom: 40px; }
.lesson-hero { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.lesson-hero-meta {
    display: flex; gap: 12px; align-items: center;
    font-size: 12px; font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-family: var(--font-mono);
}
.lesson-hero-meta .dot { width: 3px; height: 3px; background: var(--text-subtle); border-radius: 50%; }
.lesson-hero-title { font-size: 26px; font-weight: 600; line-height: 1.35; letter-spacing: -0.02em; color: var(--text); }

.lesson-section-head {
    display: flex; gap: 12px; align-items: baseline;
    margin-bottom: 14px; margin-top: 32px;
}
.lesson-section-num {
    font-family: var(--font-mono);
    font-size: 12px; font-weight: 600;
    color: var(--accent); flex-shrink: 0;
    padding-top: 4px;
}
.lesson-section-title {
    font-size: 18px; font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text);
}
.lesson-paragraph {
    font-size: 15px; line-height: 1.9;
    color: var(--text-muted);
    margin-bottom: 16px;
}
.lesson-paragraph strong { color: var(--text); font-weight: 600; }
.lesson-paragraph em { color: var(--accent-soft); font-style: normal; font-weight: 500; }
.lesson-paragraph code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: rgba(244, 185, 66, 0.1);
    color: var(--accent-soft);
    padding: 2px 6px; border-radius: 3px;
    direction: ltr; display: inline-block;
    unicode-bidi: embed;
}

/* ============================================================
   Callout
   ============================================================ */
.lesson-callout {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 18px 20px;
    margin: 20px 0;
    position: relative;
}
.lesson-callout::before {
    content: ''; position: absolute;
    top: 0; right: 0; width: 3px; height: 100%;
    background: var(--accent);
    border-radius: 0 6px 6px 0;
}
.lesson-callout-title {
    font-size: 12px; font-weight: 600;
    color: var(--accent-soft);
    letter-spacing: 0.06em;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}
.lesson-callout-text { font-size: 14px; line-height: 1.85; color: var(--text-muted); }

/* ============================================================
   Code Block — بهبودیافته برای کدهای طولانی
   ============================================================ */
.lesson-code {
    background: #050506;
    border: 1px solid var(--border);
    border-radius: 6px;
    margin: 18px 0;
    overflow: hidden;
    direction: ltr; text-align: left;
}
.lesson-code-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}
.lesson-code-dots { display: flex; gap: 6px; }
.lesson-code-dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.lesson-code-dots span:first-child { background: #ff5f57; }
.lesson-code-dots span:nth-child(2) { background: #febc2e; }
.lesson-code-dots span:nth-child(3) { background: #28c840; }
.lesson-code-lang {
    font-family: var(--font-mono);
    font-size: 10px; font-weight: 600;
    color: var(--text-subtle);
    letter-spacing: 0.08em;
}
.lesson-code-body {
    font-family: var(--font-mono);
    font-size: 13px; line-height: 1.7;
    color: #e0e0e0;
    padding: 18px;
    white-space: pre;
    word-wrap: normal;
    overflow-x: auto;
    margin: 0;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}
.lesson-code-body::-webkit-scrollbar { height: 6px; }
.lesson-code-body::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
.lesson-code-body::-webkit-scrollbar-track { background: transparent; }
.lesson-code-caption {
    font-family: var(--font-mono);
    font-size: 11px; font-weight: 500;
    color: var(--text-subtle);
    text-align: center;
    padding: 10px 14px;
    background: var(--surface);
    border-top: 1px solid var(--border);
}
.lesson-code-actions {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 14px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    gap: 8px; direction: rtl;
}
.lesson-code-copy {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
    padding: 6px 12px; border-radius: 4px;
    font-size: 11.5px; font-weight: 500;
    cursor: pointer;
    display: flex; align-items: center; gap: 5px;
    touch-action: manipulation;
    font-family: var(--font-sans);
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.lesson-code-copy:active { background: var(--surface-2); border-color: var(--border-strong); color: var(--text); }
.lesson-code-copy svg { width: 12px; height: 12px; stroke-width: 2; }
.lesson-code-try {
    background: var(--accent); color: #000;
    border: none;
    padding: 8px 16px; border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 12px; font-weight: 600;
    cursor: pointer;
    display: flex; align-items: center; gap: 6px;
    touch-action: manipulation;
    letter-spacing: -0.01em;
    transition: background 0.15s;
}
.lesson-code-try:active { background: var(--accent-soft); }
.lesson-code-try svg { width: 11px; height: 11px; stroke-width: 2.5; }

/* ============================================================
   توضیح کد — بهبودیافته با فاصله بهتر
   ============================================================ */
.lesson-code-explain {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 18px 20px;
    margin: 10px 0 24px;
    position: relative;
}
.lesson-code-explain::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 3px; height: 100%;
    background: var(--info);
    border-radius: 0 6px 6px 0;
}
.lesson-code-explain-title {
    display: flex; align-items: center; gap: 6px;
    font-size: 11.5px; font-weight: 600;
    color: var(--info);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    font-family: var(--font-mono);
}
.lesson-code-explain-title svg { width: 12px; height: 12px; stroke-width: 2; }
.lesson-code-explain-list { list-style: none; margin: 0; padding: 0; }
.lesson-code-explain-list li {
    font-size: 13px;
    line-height: 1.85;
    color: var(--text-muted);
    padding: 9px 20px 9px 0;
    position: relative;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
}
.lesson-code-explain-list li:last-child { border-bottom: none; }
.lesson-code-explain-list li::before {
    content: '→';
    position: absolute;
    right: 0;
    color: var(--info);
    font-size: 12px;
    font-weight: 600;
    top: 9px;
}
.lesson-code-explain-list li code {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-soft);
    background: rgba(244, 185, 66, 0.1);
    padding: 1px 5px;
    border-radius: 3px;
    direction: ltr;
    display: inline-block;
    unicode-bidi: embed;
}
.lesson-code-explain-list li strong { color: var(--text); font-weight: 600; }

/* ============================================================
   List
   ============================================================ */
.lesson-list { list-style: none; margin: 16px 0; }
.lesson-list li {
    font-size: 14.5px; line-height: 1.85;
    color: var(--text-muted);
    padding: 12px 20px 12px 0;
    position: relative;
    border-bottom: 1px solid var(--border);
}
.lesson-list li:last-child { border-bottom: none; }
.lesson-list li::before { content: '—'; position: absolute; right: 0; color: var(--accent); font-weight: 700; }
.lesson-list li strong { color: var(--text); font-weight: 600; font-family: var(--font-mono); font-size: 13.5px; }
.lesson-list li code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(244, 185, 66, 0.1);
    color: var(--accent-soft);
    padding: 1px 5px;
    border-radius: 3px;
    direction: ltr; display: inline-block; unicode-bidi: embed;
}

/* ============================================================
   Exercise
   ============================================================ */
.lesson-exercise {
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.06), rgba(244, 185, 66, 0.02));
    border: 1px solid rgba(244, 185, 66, 0.28);
    border-radius: 6px;
    padding: 20px; margin: 24px 0;
}
.lesson-exercise-title {
    font-size: 13px; font-weight: 600;
    color: var(--accent-soft);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
    font-family: var(--font-mono);
}
.lesson-exercise-text { font-size: 14.5px; line-height: 1.85; color: var(--text-muted); }

/* ============================================================
   Quiz — بهبودیافته با کنتراست بهتر
   ============================================================ */
.lesson-quiz {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.08), rgba(96, 165, 250, 0.02));
    border: 1px solid rgba(96, 165, 250, 0.3);
    border-radius: 8px;
    margin: 24px 0;
    overflow: hidden;
}
.lesson-quiz-header {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 18px;
    background: rgba(96, 165, 250, 0.06);
    border-bottom: 1px solid rgba(96, 165, 250, 0.2);
}
.lesson-quiz-icon {
    width: 32px; height: 32px;
    background: rgba(96, 165, 250, 0.15);
    border: 1px solid rgba(96, 165, 250, 0.35);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: var(--info);
    flex-shrink: 0;
}
.lesson-quiz-icon svg { width: 16px; height: 16px; stroke-width: 2; }
.lesson-quiz-label {
    font-size: 11.5px; font-weight: 700;
    color: var(--info);
    letter-spacing: 0.08em;
    font-family: var(--font-mono);
}
.lesson-quiz-body { padding: 18px; }
.lesson-quiz-question {
    font-size: 14.5px;
    line-height: 1.85;
    color: var(--text);
    font-weight: 500;
    margin-bottom: 14px;
}
.lesson-quiz-question code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(244, 185, 66, 0.1);
    color: var(--accent-soft);
    padding: 2px 6px; border-radius: 3px;
    direction: ltr; display: inline-block;
    unicode-bidi: embed;
}
.lesson-quiz-textarea {
    width: 100%;
    background: #050506;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 14px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.7;
    color: #e0e0e0;
    min-height: 90px;
    resize: vertical;
    outline: none;
    direction: ltr;
    text-align: left;
    margin-bottom: 12px;
    transition: border-color 0.15s;
}
.lesson-quiz-textarea:focus { border-color: var(--info); }
.lesson-quiz-textarea::placeholder { color: var(--text-subtle); direction: rtl; text-align: right; }
.lesson-quiz-show-btn {
    width: 100%;
    background: rgba(96, 165, 250, 0.15);
    color: var(--info);
    border: 1px solid rgba(96, 165, 250, 0.35);
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    gap: 8px;
    touch-action: manipulation;
    transition: background 0.15s;
}
.lesson-quiz-show-btn:active { background: rgba(96, 165, 250, 0.25); }
.lesson-quiz-show-btn svg { width: 14px; height: 14px; stroke-width: 2; }
.lesson-quiz-answer {
    display: none;
    background: rgba(52, 211, 153, 0.06);
    border: 1px solid rgba(52, 211, 153, 0.28);
    border-radius: 6px;
    padding: 16px 18px;
    margin-top: 14px;
    animation: quizAnswerIn 0.3s ease-out;
}
.lesson-quiz-answer.open { display: block; }
@keyframes quizAnswerIn { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: translateY(0); } }
.lesson-quiz-answer-title {
    display: flex; align-items: center; gap: 6px;
    font-size: 11.5px; font-weight: 700;
    color: var(--success);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
    font-family: var(--font-mono);
}
.lesson-quiz-answer-title svg { width: 13px; height: 13px; stroke-width: 2.5; }
.lesson-quiz-answer-text { font-size: 13.5px; line-height: 1.85; color: var(--text-muted); }
.lesson-quiz-answer-text code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(244, 185, 66, 0.1);
    color: var(--accent-soft);
    padding: 2px 6px; border-radius: 3px;
    direction: ltr; display: inline-block; unicode-bidi: embed;
}

/* ============================================================
   Project
   ============================================================ */
.lesson-project {
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.08), rgba(244, 185, 66, 0.02));
    border: 1px solid rgba(244, 185, 66, 0.35);
    border-radius: 8px;
    margin: 28px 0;
    overflow: hidden;
    position: relative;
}
.lesson-project::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 4px; height: 100%;
    background: var(--accent);
}
.lesson-project-header {
    display: flex; align-items: center; gap: 10px;
    padding: 16px 18px;
    background: rgba(244, 185, 66, 0.06);
    border-bottom: 1px solid rgba(244, 185, 66, 0.2);
}
.lesson-project-icon {
    width: 32px; height: 32px;
    background: rgba(244, 185, 66, 0.15);
    border: 1px solid rgba(244, 185, 66, 0.4);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent-soft);
    flex-shrink: 0;
}
.lesson-project-icon svg { width: 16px; height: 16px; stroke-width: 2; }
.lesson-project-label {
    font-size: 11.5px; font-weight: 700;
    color: var(--accent-soft);
    letter-spacing: 0.08em;
    font-family: var(--font-mono);
}
.lesson-project-body { padding: 18px; }
.lesson-project-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.lesson-project-desc {
    font-size: 14px;
    line-height: 1.85;
    color: var(--text-muted);
    margin-bottom: 14px;
}
.lesson-project-requirements { list-style: none; margin: 12px 0 16px; padding: 0; }
.lesson-project-requirements li {
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--text-muted);
    padding: 7px 20px 7px 0;
    position: relative;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
}
.lesson-project-requirements li:last-child { border-bottom: none; }
.lesson-project-requirements li::before {
    content: '✓';
    position: absolute;
    right: 0;
    color: var(--accent);
    font-weight: 700;
    font-size: 12px;
}
.lesson-project-try-btn {
    width: 100%;
    background: var(--accent);
    color: #000;
    border: none;
    padding: 13px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    gap: 8px;
    touch-action: manipulation;
    letter-spacing: -0.01em;
    transition: background 0.15s;
}
.lesson-project-try-btn:active { background: var(--accent-soft); }
.lesson-project-try-btn svg { width: 14px; height: 14px; stroke-width: 2.5; }

/* ============================================================
   Color Palette — بهبودیافته با هدف لمس بزرگ‌تر
   ============================================================ */
.color-palette {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin: 20px 0;
}
.color-swatch {
    aspect-ratio: 1;
    min-height: 76px;
    border-radius: 8px;
    border: 2px solid var(--border);
    display: flex; flex-direction: column;
    align-items: center; justify-content: flex-end;
    padding: 6px 4px 8px;
    cursor: pointer;
    touch-action: manipulation;
    position: relative;
    overflow: hidden;
    transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
    -webkit-user-select: none;
    user-select: none;
}
.color-swatch:active {
    transform: scale(0.94);
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(244, 185, 66, 0.3);
}
.color-swatch::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.35) 100%);
    pointer-events: none;
}
.color-swatch-label {
    font-size: 9.5px;
    font-weight: 700;
    font-family: var(--font-mono);
    padding: 3px 5px;
    border-radius: 3px;
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
    line-height: 1;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.color-swatch-name {
    font-size: 9px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 3px;
    font-family: var(--font-sans);
    text-align: center;
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

/* ============================================================
   Tag Block — تگ‌های HTML
   ============================================================ */
.tag-block {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    position: relative;
    overflow: hidden;
}
.tag-block::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 3px; height: 100%;
    background: var(--accent);
}
.tag-block-name {
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-soft);
    margin-bottom: 10px;
    letter-spacing: -0.01em;
    direction: ltr;
    text-align: right;
    display: inline-block;
}
.tag-block-role {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 3px 8px;
    border-radius: 3px;
    margin-bottom: 12px;
    margin-right: 8px;
    font-family: var(--font-sans);
    vertical-align: middle;
}
.tag-block-desc { font-size: 14px; line-height: 1.9; color: var(--text-muted); margin-bottom: 14px; }
.tag-block-desc strong { color: var(--text); font-weight: 600; }
.tag-block-desc code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(244, 185, 66, 0.1);
    color: var(--accent-soft);
    padding: 1px 5px;
    border-radius: 3px;
    direction: ltr; display: inline-block; unicode-bidi: embed;
}
.tag-block-attrs {
    margin: 12px 0;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 6px;
    border-right: 2px solid var(--accent);
}
.tag-block-attrs-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-soft);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}
.tag-block-attrs ul { list-style: none; margin: 0; padding: 0; }
.tag-block-attrs li { font-size: 13px; line-height: 1.8; color: var(--text-muted); padding: 4px 0; }
.tag-block-attrs li strong {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12.5px;
    font-weight: 600;
}

/* ============================================================
   تکمیل درس
   ============================================================ */
.lesson-complete-section { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.lesson-complete-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.lesson-complete-card::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 3px; height: 100%;
    background: var(--accent);
}
.lesson-complete-card.done { border-color: rgba(16, 185, 129, 0.3); }
.lesson-complete-card.done::before { background: var(--success); }
.lesson-complete-icon { font-size: 36px; color: var(--accent); line-height: 1; margin-bottom: 12px; }
.lesson-complete-icon.done { color: var(--success); font-size: 32px; }
.lesson-complete-title {
    font-size: 17px; font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.lesson-complete-text { font-size: 13.5px; line-height: 1.8; color: var(--text-muted); margin-bottom: 20px; }
.complete-btn {
    width: 100%;
    background: var(--accent);
    color: #000;
    border: none;
    padding: 14px 16px;
    border-radius: 4px;
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    letter-spacing: -0.01em;
    transition: background 0.15s;
}
.complete-btn:active { background: var(--accent-soft); }
.next-lesson-btn, .back-home-btn {
    width: 100%;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border-strong);
    padding: 14px 16px;
    border-radius: 4px;
    font-size: 14.5px;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    transition: border-color 0.15s, color 0.15s;
}
.next-lesson-btn:active, .back-home-btn:active { border-color: var(--accent); color: var(--accent-soft); }

/* ============================================================
   صفحه خرید
   ============================================================ */
.purchase-tiers { display: flex; flex-direction: column; gap: 16px; margin-bottom: 24px; }
.tier-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 22px 20px;
    position: relative;
    overflow: hidden;
}
.tier-card.featured {
    border-color: rgba(244, 185, 66, 0.45);
    background: linear-gradient(135deg, rgba(244, 185, 66, 0.05), var(--surface));
}
.tier-card.featured::before {
    content: 'پیشنهاد ویژه';
    position: absolute;
    top: 0; left: 0;
    background: var(--accent);
    color: #000;
    font-size: 10px;
    font-weight: 700;
    padding: 3px 12px;
    border-bottom-right-radius: 6px;
    letter-spacing: 0.03em;
}
.tier-card.purchased { border-color: rgba(16, 185, 129, 0.4); }
.tier-card.purchased::after {
    content: '';
    position: absolute;
    top: 16px; right: 16px;
    width: 28px; height: 28px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: 50%;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2334d399' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
    background-size: 16px;
    background-position: center;
    background-repeat: no-repeat;
}
.tier-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-soft);
    background: var(--accent-dim);
    border: 1px solid rgba(244, 185, 66, 0.3);
    padding: 3px 10px;
    border-radius: 3px;
    margin-bottom: 12px;
}
.tier-card.purchased .tier-badge {
    color: #6ee7b7;
    background: rgba(16, 185, 129, 0.14);
    border-color: rgba(16, 185, 129, 0.35);
}
.tier-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.tier-subtitle { font-size: 12.5px; color: var(--text-muted); margin-bottom: 16px; }
.tier-price {
    font-family: var(--font-mono);
    font-size: 26px;
    font-weight: 700;
    color: var(--accent-soft);
    margin-bottom: 18px;
    display: flex; align-items: baseline;
    gap: 6px;
}
.tier-price .unit { font-size: 13px; font-weight: 500; color: var(--text-muted); }
.tier-features {
    list-style: none;
    margin-bottom: 20px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}
.tier-features li {
    font-size: 13px;
    color: var(--text-muted);
    padding: 7px 24px 7px 0;
    position: relative;
    line-height: 1.6;
}
.tier-features li::before { content: '✓'; position: absolute; right: 0; color: var(--success); font-weight: 700; }
.tier-btn {
    width: 100%;
    background: var(--accent);
    color: #000;
    border: none;
    padding: 14px 16px;
    border-radius: 4px;
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    touch-action: manipulation;
    transition: background 0.15s;
}
.tier-btn:active { background: var(--accent-soft); }
.tier-btn.purchased {
    background: rgba(16, 185, 129, 0.14);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.4);
    cursor: default;
}
.tier-btn:disabled { opacity: 0.7; }
.purchase-note {
    display: flex; align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 24px;
}
.purchase-note-icon { font-size: 16px; }
.purchase-note-text { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ============================================================
   تمرینگاه
   ============================================================ */
.playground-toolbar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}
.toolbar-btn {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 8px;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 500;
    min-height: 62px;
    touch-action: manipulation;
    transition: border-color 0.15s, background 0.15s, color 0.15s, transform 0.1s;
}
.toolbar-btn svg { width: 20px; height: 20px; stroke-width: 2; flex-shrink: 0; }
.toolbar-btn span { white-space: nowrap; line-height: 1; }
.toolbar-btn:active {
    background: var(--surface-2);
    border-color: var(--accent);
    color: var(--accent-soft);
    transform: scale(0.96);
}

.playground-container {
    display: flex; flex-direction: column;
    gap: 12px;
    height: calc(100vh - 280px);
    min-height: 400px;
}
.playground-pane {
    display: flex; flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    flex: 1; min-height: 0;
}
.playground-pane-header {
    display: flex; justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.playground-pane-label {
    font-family: var(--font-mono);
    font-size: 11px; font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}
.playground-run-btn {
    background: var(--accent);
    color: #000;
    border: none;
    padding: 8px 18px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    transition: background 0.15s;
}
.playground-run-btn:active { background: var(--accent-soft); }
.playground-status {
    font-family: var(--font-mono);
    font-size: 10.5px; font-weight: 500;
    color: var(--text-subtle);
}
.playground-status.ok { color: var(--success); }
.playground-status.err { color: var(--danger); }
.playground-editor {
    flex: 1; width: 100%;
    background: #050506;
    color: #e0e0e0;
    border: none;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.7;
    resize: none;
    outline: none;
    direction: ltr;
    text-align: left;
    tab-size: 2;
    min-height: 200px;
}
.playground-preview {
    flex: 1; width: 100%;
    background: #ffffff;
    border: none;
    min-height: 200px;
}

/* فول‌اسکرین */
.playground-container.editor-fullscreen { height: calc(100vh - 200px); }
.playground-container.editor-fullscreen .playground-pane:last-child { display: none; }
.playground-container.editor-fullscreen .playground-pane:first-child { flex: 1 1 100%; height: 100%; }

/* CodeMirror */
.playground-pane .CodeMirror {
    flex: 1 1 auto;
    height: auto !important;
    min-height: 0;
    font-family: var(--font-mono) !important;
    font-size: 14px !important;
    line-height: 1.7 !important;
    background: #050506 !important;
    color: #e0e0e0 !important;
    direction: ltr; text-align: left;
    padding: 8px 0;
}
.playground-pane .CodeMirror-scroll { min-height: 100%; }
.playground-pane .CodeMirror-gutters {
    background: #0a0a0b !important;
    border-right: 1px solid var(--border) !important;
    border-left: none !important;
}
.playground-pane .CodeMirror-linenumber { color: var(--text-subtle) !important; padding: 0 8px 0 6px !important; }
.playground-pane .CodeMirror-cursor { border-left: 2px solid var(--accent) !important; }
.playground-pane .CodeMirror-selected { background: rgba(244, 185, 66, 0.2) !important; }
.playground-pane .CodeMirror-focused .CodeMirror-selected { background: rgba(244, 185, 66, 0.25) !important; }
.cm-s-material-darker .cm-tag { color: #f4b942 !important; }
.cm-s-material-darker .cm-attribute { color: #a5d6ff !important; }
.cm-s-material-darker .cm-string { color: #6ee7b7 !important; }
.cm-s-material-darker .cm-comment { color: #6b6b76 !important; font-style: italic; }
.cm-s-material-darker .cm-keyword { color: #ff8a65 !important; }
.cm-s-material-darker .cm-number { color: #ffcb5c !important; }
.cm-s-material-darker .cm-property { color: #a5d6ff !important; }
.cm-s-material-darker .cm-atom { color: #f4b942 !important; }
.cm-s-material-darker .cm-def { color: #ffcb5c !important; }
.cm-s-material-darker .cm-bracket { color: #82828f !important; }

/* ============================================================
   دکمه شناور AI
   ============================================================ */
.ai-fab {
    position: fixed;
    bottom: 20px; right: 20px;
    width: 56px; height: 56px;
    background: linear-gradient(135deg, var(--accent), var(--accent-soft));
    border: none; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: #000;
    box-shadow: 0 6px 24px rgba(244, 185, 66, 0.5), 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 500;
    transition: transform 0.2s, box-shadow 0.2s;
    touch-action: manipulation;
}
.ai-fab:active { transform: scale(0.92); box-shadow: 0 3px 12px rgba(244, 185, 66, 0.6); }
.ai-fab svg { width: 28px; height: 28px; stroke-width: 1.8; }
.ai-fab-badge {
    position: absolute;
    top: -4px; left: -4px;
    background: #000; color: var(--accent);
    font-size: 9px; font-weight: 700;
    font-family: var(--font-mono);
    padding: 2px 6px; border-radius: 8px;
    border: 1.5px solid var(--accent);
    letter-spacing: 0.05em;
}

/* ============================================================
   پنل AI
   ============================================================ */
.ai-panel { position: fixed; inset: 0; z-index: 1500; display: none; pointer-events: none; }
.ai-panel.active { display: block; pointer-events: auto; }
.ai-panel-backdrop {
    position: absolute; inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease-out;
}
.ai-panel-content {
    position: absolute; inset: 0;
    background: var(--bg);
    display: flex; flex-direction: column;
    animation: aiSlideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes aiSlideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.ai-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0; gap: 12px;
}
.ai-header-center { flex: 1; text-align: center; min-width: 0; }
.ai-header-title { font-size: 15px; font-weight: 600; color: var(--text); letter-spacing: -0.01em; }
.ai-header-subtitle {
    font-size: 11px;
    color: var(--success);
    font-weight: 500;
    display: flex; align-items: center; justify-content: center;
    gap: 4px; margin-top: 1px;
}
.ai-header-subtitle::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--success);
}
.ai-close-btn, .ai-clear-btn {
    width: 40px; height: 40px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-muted);
    flex-shrink: 0;
    touch-action: manipulation;
    transition: background 0.15s, border-color 0.15s;
}
.ai-close-btn:active, .ai-clear-btn:active { background: var(--surface-2); border-color: var(--border-strong); }
.ai-close-btn svg, .ai-clear-btn svg { width: 18px; height: 18px; }

.ai-quick-actions {
    display: flex; gap: 8px;
    padding: 12px 16px;
    overflow-x: auto;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.ai-quick-actions::-webkit-scrollbar { display: none; }
.ai-chip {
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 12px; font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    display: flex; align-items: center;
    gap: 6px; flex-shrink: 0;
    touch-action: manipulation;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.ai-chip svg { width: 14px; height: 14px; stroke-width: 2; }
.ai-chip:active { border-color: var(--accent); color: var(--accent-soft); background: var(--surface-2); }

.ai-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex; flex-direction: column;
    gap: 12px;
    -webkit-overflow-scrolling: touch;
}
.ai-message { display: flex; max-width: 88%; animation: messageIn 0.25s ease-out; }
@keyframes messageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.ai-message-user { align-self: flex-start; flex-direction: row-reverse; }
.ai-message-ai { align-self: flex-end; }
.ai-bubble {
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.75;
    word-wrap: break-word;
    white-space: pre-wrap;
}
.ai-message-user .ai-bubble { background: var(--accent); color: #000; border-bottom-left-radius: 4px; font-weight: 500; }
.ai-message-ai .ai-bubble { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-bottom-right-radius: 4px; }
.ai-bubble code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(0, 0, 0, 0.4);
    color: var(--accent-soft);
    padding: 2px 6px; border-radius: 4px;
    direction: ltr; display: inline-block;
    unicode-bidi: embed;
}
.ai-message-user .ai-bubble code { background: rgba(0, 0, 0, 0.2); color: #000; }
.ai-bubble strong { font-weight: 700; }

.ai-typing {
    display: flex; gap: 4px;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}
.ai-typing span {
    width: 7px; height: 7px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}
.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

.ai-fix-btn {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--success);
    color: #000;
    border: none;
    padding: 8px 14px;
    border-radius: 6px;
    font-family: var(--font-sans);
    font-size: 12px; font-weight: 600;
    cursor: pointer; margin-top: 8px;
    touch-action: manipulation;
    transition: opacity 0.15s;
}
.ai-fix-btn:active { opacity: 0.85; }
.ai-fix-btn svg { width: 12px; height: 12px; stroke-width: 2.5; }

.ai-input-bar {
    display: flex; gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0;
    padding-bottom: calc(12px + env(safe-area-inset-bottom));
}
.ai-input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 10px 16px;
    color: var(--text);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
}
.ai-input:focus { border-color: var(--accent); }
.ai-input::placeholder { color: var(--text-subtle); }
.ai-send-btn {
    width: 44px; height: 44px;
    background: var(--accent);
    border: none; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: #000;
    flex-shrink: 0;
    touch-action: manipulation;
    transition: transform 0.1s, opacity 0.15s;
}
.ai-send-btn:active { transform: scale(0.92); }
.ai-send-btn:disabled { opacity: 0.4; }
.ai-send-btn svg { width: 18px; height: 18px; stroke-width: 2.2; }

/* ============================================================
   مودال پاداش
   ============================================================ */
.reward-modal { position: fixed; inset: 0; z-index: 1000; display: none; align-items: center; justify-content: center; padding: 20px; }
.reward-modal.active { display: flex; animation: fadeIn 0.3s ease-out; }
.reward-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.85); backdrop-filter: blur(8px); }
.reward-content {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    padding: 44px 32px 28px;
    max-width: 340px; width: 100%;
    text-align: center;
    animation: dialogPop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes dialogPop { from { transform: scale(0.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.reward-glow {
    position: absolute;
    top: -80px; left: 50%;
    transform: translateX(-50%);
    width: 240px; height: 240px;
    background: radial-gradient(circle, rgba(244, 185, 66, 0.35) 0%, transparent 65%);
    pointer-events: none;
    animation: rewardPulse 2s ease-in-out infinite;
}
@keyframes rewardPulse {
    0%, 100% { opacity: 0.5; transform: translateX(-50%) scale(1); }
    50% { opacity: 1; transform: translateX(-50%) scale(1.08); }
}
.reward-icon { font-size: 48px; color: var(--accent); line-height: 1; margin-bottom: 16px; animation: rewardSpin 1.2s ease-out; }
@keyframes rewardSpin { from { transform: rotate(-180deg) scale(0); } to { transform: rotate(0deg) scale(1); } }
.reward-xp {
    font-family: var(--font-mono);
    font-size: 52px; font-weight: 700;
    color: var(--accent-soft);
    line-height: 1; margin-bottom: 4px;
    letter-spacing: -0.03em;
}
.reward-label { font-size: 12px; font-weight: 600; color: var(--text-muted); letter-spacing: 0.15em; margin-bottom: 24px; }
.reward-lesson-name {
    font-size: 14px; font-weight: 500;
    color: var(--text);
    padding: 14px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}
.reward-btn {
    width: 100%;
    background: var(--accent);
    color: #000;
    border: none;
    padding: 13px 24px;
    border-radius: 4px;
    font-size: 14px; font-weight: 600;
    cursor: pointer;
    touch-action: manipulation;
    transition: background 0.15s;
}
.reward-btn:active { background: var(--accent-soft); }

/* ============================================================
   مودال‌های دیالوگ
   ============================================================ */
.dialog-modal { position: fixed; inset: 0; z-index: 2000; display: none; align-items: flex-start; justify-content: center; padding: 20px; padding-top: 15vh; }
.dialog-modal.active { display: flex; animation: fadeIn 0.2s ease-out; }
.dialog-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.85); backdrop-filter: blur(6px); }
.dialog-content {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    padding: 24px;
    max-width: 400px; width: 100%;
    animation: dialogPop 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
}
.dialog-content-wide { max-width: 460px; }
.dialog-title { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 16px; }
.dialog-message { font-size: 14px; line-height: 1.85; color: var(--text-muted); margin-bottom: 20px; }
.dialog-input {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px 16px;
    font-family: inherit;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 16px;
    outline: none;
    transition: border-color 0.15s;
}
.dialog-input:focus { border-color: var(--accent); }
.dialog-input::placeholder { color: var(--text-subtle); }
.dialog-actions { display: flex; gap: 8px; justify-content: flex-end; }
.dialog-btn {
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 14px; font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    min-height: 44px;
    touch-action: manipulation;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.dialog-btn:active { transform: scale(0.97); }
.dialog-btn-primary { background: var(--accent); color: #000; }
.dialog-btn-primary:active { background: var(--accent-soft); }
.dialog-btn-secondary { background: var(--surface-2); color: var(--text-muted); border-color: var(--border); }

.projects-list { max-height: 50vh; overflow-y: auto; margin-bottom: 16px; -webkit-overflow-scrolling: touch; }
.projects-empty { text-align: center; padding: 40px 20px; color: var(--text-subtle); font-size: 13px; }
.project-item {
    display: flex; align-items: center;
    gap: 12px;
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    border-radius: 4px;
    touch-action: manipulation;
    transition: background 0.15s;
}
.project-item:active { background: var(--surface-2); }
.project-item.current { background: rgba(244, 185, 66, 0.05); border-radius: 6px; padding-right: 8px; }
.project-item-body { flex: 1; min-width: 0; }
.project-item-name {
    font-size: 14px; font-weight: 500;
    color: var(--text);
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 3px;
}
.current-badge {
    font-size: 10px; font-weight: 600;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 2px 6px; border-radius: 3px;
    margin-right: 6px;
    border: 1px solid rgba(244, 185, 66, 0.3);
}
.project-item-meta { font-family: var(--font-mono); font-size: 11px; color: var(--text-subtle); }
.project-delete-btn {
    width: 40px; height: 40px;
    flex-shrink: 0;
    background: transparent;
    border: none; border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-subtle);
    touch-action: manipulation;
    transition: background 0.15s, color 0.15s;
}
.project-delete-btn:active { background: rgba(255, 100, 100, 0.1); color: var(--danger); }
.project-delete-btn svg { width: 18px; height: 18px; }

/* ============================================================
   Toast
   ============================================================ */
.toast-container {
    position: fixed;
    top: 20px; left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    display: flex; flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: calc(100% - 40px);
}
.toast {
    background: var(--surface-2);
    border: 1px solid var(--border-strong);
    color: var(--text);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 13.5px; font-weight: 500;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    animation: toastIn 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
    text-align: center;
}
.toast.success { border-color: rgba(52, 211, 153, 0.5); color: var(--success); }
.toast.error { border-color: rgba(255, 100, 100, 0.5); color: var(--danger); }
.toast.out { animation: toastOut 0.25s ease-in forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(-20px); } }

/* ============================================================
   تم روشن — بهبودیافته
   ============================================================ */
body.theme-light {
    --bg: #f8f8f7;
    --surface: #ffffff;
    --surface-2: #f0f0ef;
    --border: #e0e0df;
    --border-strong: #c8c8c7;
    --text: #1a1a19;
    --text-muted: #555553;
    --text-subtle: #7a7a78;
    --accent: #b8860b;
    --accent-soft: #946f09;
    --accent-dim: rgba(184, 134, 11, 0.14);
    --info: #2563eb;
    --success: #059669;
    --danger: #dc2626;
}

/* بلوک‌های کد در تم روشن هم تیره می‌مانند */
body.theme-light .lesson-code,
body.theme-light .lesson-quiz-textarea,
body.theme-light .playground-editor,
body.theme-light .CodeMirror { background: #1a1a19 !important; }
body.theme-light .lesson-code-body { color: #e0e0e0; }
body.theme-light .lesson-code-header,
body.theme-light .lesson-code-caption,
body.theme-light .lesson-code-actions {
    background: #2a2a28;
    border-color: #3a3a38;
}
body.theme-light .lesson-code-lang,
body.theme-light .lesson-code-caption { color: #a8a8a3; }
body.theme-light .lesson-code-copy { color: #a8a8a3; border-color: #3a3a38; }
body.theme-light .lesson-code-copy:active { color: #e0e0e0; background: #3a3a38; }
body.theme-light .playground-pane-header { background: #2a2a28; border-color: #3a3a38; }
body.theme-light .playground-pane-label { color: #a8a8a3; }
body.theme-light .lesson-quiz-textarea { color: #e0e0e0; }

/* Quiz در تم روشن — کنتراست بهتر */
body.theme-light .lesson-quiz {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(37, 99, 235, 0.02));
    border-color: rgba(37, 99, 235, 0.3);
}
body.theme-light .lesson-quiz-header {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.22);
}
body.theme-light .lesson-quiz-question { color: var(--text); }
body.theme-light .lesson-quiz-answer {
    background: rgba(5, 150, 105, 0.08);
    border-color: rgba(5, 150, 105, 0.3);
}
body.theme-light .lesson-quiz-answer-text { color: var(--text-muted); }

/* توضیح کد در تم روشن */
body.theme-light .lesson-code-explain-list li { border-bottom-color: rgba(0, 0, 0, 0.08); }
body.theme-light .lesson-project-requirements li { border-bottom-color: rgba(0, 0, 0, 0.08); }

body.theme-light .ai-panel-content { background: var(--bg); }
body.theme-light .splash, body.theme-light .onboarding { background: var(--bg); }
body.theme-light .splash-mark { box-shadow: 0 8px 40px rgba(184, 134, 11, 0.35); }
body.theme-light .ai-message-ai .ai-bubble {
    background: var(--surface);
    border-color: var(--border);
    color: var(--text);
}
body.theme-light .ai-message-ai .ai-bubble code {
    background: rgba(0, 0, 0, 0.08);
    color: var(--accent-soft);
}
body.theme-light .toast { background: #ffffff; color: var(--text); }
body.theme-light .toast.success { color: var(--success); }
body.theme-light .toast.error { color: var(--danger); }
body.theme-light .reward-modal .reward-backdrop { background: rgba(0, 0, 0, 0.6); }
body.theme-light .reward-content { background: var(--surface); }
body.theme-light .color-swatch { border-color: var(--border-strong); }
body.theme-light .tag-block-attrs { background: #f5f5f4; }
body.theme-light .tag-block-role { background: #f5f5f4; }

/* ============================================================
   واکنش‌گرایی — بهبودیافته
   ============================================================ */
@media (max-width: 360px) {
    .hero-title { font-size: 26px; }
    .stat-value { font-size: 20px; }
    .toolbar-btn { min-height: 56px; font-size: 10px; }
    .toolbar-btn svg { width: 18px; height: 18px; }
    .color-palette { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .color-swatch { min-height: 68px; }
    .tag-block-name { font-size: 16px; }
    .lesson-quiz-header { padding: 12px 14px; }
    .lesson-quiz-body { padding: 14px; }
    .lesson-hero-title { font-size: 22px; }
    .lesson-section-title { font-size: 16px; }
    .lesson-project-title { font-size: 15px; }
    .lesson-complete-title { font-size: 16px; }
    .tier-price { font-size: 22px; }
    .onboarding-slide h2 { font-size: 22px; }
    .onboarding-slide p { font-size: 14px; }
}

/* حداقل ارتفاع لمسی برای دسترسی‌پذیری */
@media (hover: none) {
    .lesson, .continue-card, .playground-card, .unlock-banner, .article-card { min-height: 44px; }
}

/* کاهش انیمیشن برای کاربران با prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* چاپ */
@media print {
    .topbar, .settings-section, .footer, .ai-fab, .splash, .onboarding { display: none !important; }
    body { background: white; color: black; }
    .lesson-code { border: 1px solid #ccc; }
}
/* ============================================================
   تم آبی — Blue Theme
   ============================================================ */
body.theme-blue {
    --bg: #061529;
    --surface: #0c2039;
    --surface-2: #13294a;
    --border: #1e3a5f;
    --border-strong: #2d5080;
    --text: #e8f1ff;
    --text-muted: #9db8d8;
    --text-subtle: #6a8ab0;
    --accent: #3b82f6;
    --accent-soft: #60a5fa;
    --accent-dim: rgba(59, 130, 246, 0.16);
    --danger: #f87171;
    --success: #34d399;
    --info: #38bdf8;
}
body.theme-blue .splash-mark { box-shadow: 0 8px 40px rgba(59, 130, 246, 0.45); }
body.theme-blue .splash-name,
body.theme-blue .hero-title em { color: var(--accent-soft); }
body.theme-blue .tier-card.featured {
    border-color: rgba(59, 130, 246, 0.5);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.06), var(--surface));
}
body.theme-blue .lesson-project,
body.theme-blue .lesson-quiz,
body.theme-blue .lesson-callout {
    border-color: rgba(59, 130, 246, 0.32);
}

/* ============================================================
   مودال فعال‌سازی
   ============================================================ */
.activation-content {
    padding: 24px 22px;
    position: relative;
}
.activation-close {
    position: absolute;
    top: 14px; left: 14px;
    width: 32px; height: 32px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--text-muted);
    touch-action: manipulation;
}
.activation-close svg { width: 16px; height: 16px; }
.activation-close:active { background: var(--surface-2); color: var(--text); }

.activation-header {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
}
.activation-icon {
    width: 56px; height: 56px;
    background: var(--accent-dim);
    border: 1px solid rgba(59, 130, 246, 0.4);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 12px;
    color: var(--accent-soft);
}
.activation-icon svg { width: 26px; height: 26px; }
.activation-title {
    font-size: 18px; font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}
.activation-price {
    font-family: var(--font-mono);
    font-size: 14px; font-weight: 600;
    color: var(--accent-soft);
}
.activation-instructions {
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--text-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    border-right: 3px solid var(--accent);
    border-radius: 6px;
    padding: 14px 16px;
    margin-bottom: 18px;
    white-space: pre-wrap;
    word-break: break-word;
}
.activation-instructions strong { color: var(--text); font-weight: 700; }
.activation-instructions code {
    font-family: var(--font-mono);
    font-size: 12.5px;
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-soft);
    padding: 2px 6px; border-radius: 3px;
    direction: ltr; display: inline-block;
}
.activation-code-section { margin-top: 4px; }
.activation-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
    text-align: right;
}
.activation-input {
    width: 100%;
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    direction: ltr; text-align: center;
    letter-spacing: 0.08em;
    outline: none;
    margin-bottom: 8px;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.activation-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}
.activation-input.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}
.activation-input::placeholder { color: var(--text-subtle); font-weight: 400; letter-spacing: 0.04em; }
.activation-error {
    font-size: 12px;
    color: var(--danger);
    min-height: 18px;
    margin-bottom: 12px;
    text-align: right;
    padding-right: 4px;
}
.activation-submit-btn {
    width: 100%;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 14px 20px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 14.5px;
    font-weight: 700;
    cursor: pointer;
    touch-action: manipulation;
    transition: background 0.15s, transform 0.1s;
    letter-spacing: -0.01em;
}
.activation-submit-btn:active {
    background: var(--accent-soft);
    transform: scale(0.98);
}