/* متغیرهای CSS - نسخه اپلیکیشن محور موبایل */
:root {
    /* رنگ‌های اصلی */
    --primary-color: #6d28d9;
    --primary-light: #8b5cf6;
    --primary-dark: #5b21b6;
    --secondary-color: #7c3aed;
    --secondary-light: #a78bfa;
    --accent-color: #ec4899;
    --accent-light: #f472b6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* گرادیانت‌ها */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--warning-color));
    --gradient-surface: linear-gradient(135deg, #ffffff, #f8f9fa);
    --gradient-dark: linear-gradient(135deg, #1a1a1a, #2d2d2d);
    --gradient-purple: linear-gradient(135deg, #8b5cf6, #6d28d9);
    
    /* رنگ‌های پس‌زمینه */
    --background-color: #ffffff;
    --surface-color: #f8f9fa;
    --card-color: #ffffff;
    --nav-color: #ffffff;
    
    /* رنگ‌های متن */
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #8d8d8d;
    --text-on-primary: #ffffff;
    
    /* رنگ‌های مرز و جداکننده */
    --border-color: #e5e7eb;
    --divider-color: #f3f4f6;
    --nav-border-color: rgba(0, 0, 0, 0.1);
    
    /* سایه‌ها */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-nav: 0 -4px 20px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.1);
    
    /* افکت‌های شیشه‌ای */
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    
    /* ابعاد مخصوص موبایل */
    --header-height: 56px;
    --nav-height: 72px;
    --nav-item-size: 56px;
    --chat-button-size: 64px;
    --course-card-height: 200px;
    --course-card-compact: 160px;
    
    /* شعاع‌ها */
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --border-radius-md: 16px;
    --border-radius-lg: 20px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;
    
    /* انیمیشن‌ها */
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* فاصله‌های مخصوص موبایل */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 20px;
    --space-2xl: 24px;
    --space-3xl: 28px;
}

/* تم تاریک */
[data-theme="dark"] {
    --gradient-surface: linear-gradient(135deg, #121212, #1a1a1a);
    --gradient-purple: linear-gradient(135deg, #7c3aed, #5b21b6);
    
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --card-color: #252525;
    --nav-color: #1a1a1a;
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #6d6d6d;
    
    --border-color: #333333;
    --divider-color: #2a2a2a;
    --nav-border-color: rgba(255, 255, 255, 0.1);
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-nav: 0 -4px 20px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.3);
    
    --glass-bg: rgba(30, 30, 30, 0.95);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ریست استایل مخصوص موبایل */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    font-weight: 400;
    overflow-x: hidden;
    padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom));
    min-height: 100vh;
    min-height: -webkit-fill-available;
    transition: var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    touch-action: pan-y;
}

/* هدر اصلی - کامپکت برای موبایل */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
}

.header-right {
    text-align: right;
    flex: 1;
    min-width: 0;
}

.site-title {
    font-size: 1.1rem;
    font-weight: 800;
    background: var(--gradient-purple);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2px;
    letter-spacing: -0.3px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-subtitle {
    font-size: 0.7rem;
    color: var(--text-secondary);
    font-weight: 500;
    opacity: 0.9;
    white-space: nowrap;
}

/* سمت چپ هدر */
.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

/* دکمه تغییر تم - کامپکت */
.theme-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    border-radius: var(--border-radius-full);
    background: var(--card-color);
    border: 1.5px solid var(--border-color);
    cursor: pointer;
    padding: 2px;
    transition: var(--transition);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--gradient-purple);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-primary);
    font-size: 9px;
}

.theme-slider::before {
    content: '☀️';
}

[data-theme="dark"] .theme-slider {
    transform: translateX(20px);
}

[data-theme="dark"] .theme-slider::before {
    content: '🌙';
}

/* منوی کاربر */
.user-menu {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--card-color);
}

.user-avatar:active {
    transform: scale(0.9);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--card-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-lg);
    min-width: 180px;
    display: none;
    z-index: 1001;
    border: 1px solid var(--border-color);
    animation: slideDown 0.2s ease-out;
}

.user-menu:hover .user-dropdown {
    display: block;
}

.user-menu:active .user-dropdown {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-info {
    text-align: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.user-info strong {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.user-info span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.logout-btn {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.logout-btn:active {
    transform: scale(0.98);
}

/* محتوای اصلی - بهینه برای موبایل */
.main-content {
    max-width: 768px;
    margin: 0 auto;
    padding: calc(var(--header-height) + var(--space-md)) var(--space-md) var(--space-2xl);
    min-height: calc(100vh - var(--nav-height));
}

/* بخش استوری */
.stories-section {
    margin-bottom: var(--space-xl);
}

/* بخش خدمات */
.services-section {
    margin-bottom: var(--space-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding: 0 var(--space-xs);
}

.section-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    padding-right: var(--space-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: -4px;
    width: 20px;
    height: 3px;
    background: var(--gradient-purple);
    border-radius: 2px;
}

.view-all {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 600;
    transition: var(--transition);
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    background: var(--surface-color);
    white-space: nowrap;
}

.view-all:active {
    transform: scale(0.95);
}

/* شبکه خدمات - 3 ستونه در موبایل */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xs);
    padding: 0 var(--space-xs);
}

.service-card {
    background: var(--card-color);
    border-radius: var(--border-radius-md);
    padding: var(--space-md) var(--space-xs);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    aspect-ratio: 1/1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-purple);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:active {
    transform: scale(0.95);
}

.service-card.touch-active {
    transform: scale(0.95);
}

.service-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-full);
    background: var(--gradient-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-primary);
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 8px rgba(109, 40, 217, 0.2);
}

.service-card:active .service-icon {
    transform: scale(0.9);
}

.service-name {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.2;
    padding: 0 2px;
}

/* بخش دوره آموزشی - بهینه برای موبایل */
.courses-section {
    margin-bottom: var(--space-2xl);
}

.courses-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding: 0 var(--space-xs);
}

.courses-header .section-title::after {
    content: '';
    position: absolute;
    right: 0;
    bottom: -4px;
    width: 20px;
    height: 3px;
    background: var(--gradient-purple);
    border-radius: 2px;
}

/* دکمه ... (سه نقطه) */
.more-courses-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-full);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
    font-size: 1rem;
    font-weight: bold;
    transition: var(--transition);
    user-select: none;
    -webkit-user-select: none;
    flex-shrink: 0;
}

/* کارت دوره آموزشی - مستطیلی و بهینه برای موبایل */
.course-card {
    background: var(--card-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-color);
    animation: fadeIn 0.4s ease-out;
    min-height: var(--course-card-compact);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    margin: 0 var(--space-xs);
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-purple);
}

.course-grade-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(109, 40, 217, 0.3);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
    gap: var(--space-md);
}

.course-info {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    flex: 1;
    min-width: 0;
}

.course-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-md);
    background: var(--gradient-purple);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-primary);
    font-size: 1.1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 8px rgba(109, 40, 217, 0.3);
}

.course-details {
    flex: 1;
    min-width: 0;
}

.course-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.course-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.course-grade {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(109, 40, 217, 0.1);
    padding: 3px 8px;
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
}

.course-duration {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 3px;
    white-space: nowrap;
}

.course-duration::before {
    content: '⏱️';
    font-size: 0.8rem;
}

.course-start-btn {
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--border-radius-md);
    padding: var(--space-sm) var(--space-md);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(109, 40, 217, 0.3);
    flex-shrink: 0;
    margin-top: var(--space-xs);
}

.course-start-btn:active {
    transform: scale(0.95);
}

.course-start-btn i {
    font-size: 0.8rem;
}

/* بخش پیشرفت */
.course-progress-section {
    margin-bottom: var(--space-lg);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.progress-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.progress-value {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.progress-bar {
    height: 6px;
    background: var(--surface-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-purple);
    border-radius: 3px;
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* آمار دوره - کامپکت برای موبایل */
.course-stats {
    display: flex;
    align-items: center;
    background: var(--surface-color);
    border-radius: var(--border-radius-md);
    padding: var(--space-sm);
    gap: var(--space-xs);
}

.stat-item {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px;
    min-width: 0;
}

.stat-item i {
    font-size: 0.9rem;
    color: var(--primary-color);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-content {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.stat-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stat-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    margin-top: 1px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.stat-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
    flex-shrink: 0;
}

/* حالت "دوره‌ای یافت نشد" */
.course-empty-state {
    background: var(--card-color);
    border-radius: var(--border-radius-lg);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    animation: fadeIn 0.6s ease-out;
    margin: 0 var(--space-xs);
}

.course-empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    background: var(--surface-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-muted);
}

.course-empty-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.course-empty-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: var(--space-lg);
    margin-left: auto;
    margin-right: auto;
}

.explore-courses-btn {
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--border-radius-md);
    padding: var(--space-md) var(--space-lg);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: 0 4px 12px rgba(109, 40, 217, 0.3);
    text-decoration: none;
}

.explore-courses-btn:active {
    transform: scale(0.95);
}

/* منوی ناوبری پایین - اپلیکیشن محور */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 0;
}

.nav-background {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--nav-height) + env(safe-area-inset-bottom));
    background: var(--nav-color);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--nav-border-color);
    box-shadow: var(--shadow-nav);
}

.nav-container {
    position: relative;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: var(--nav-height);
    padding: var(--space-xs) var(--space-md);
    max-width: 768px;
    margin: 0 auto;
    padding-bottom: calc(var(--space-xs) + env(safe-area-inset-bottom));
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
    position: relative;
    flex: 1;
    max-width: 60px;
    z-index: 2;
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border-radius: var(--border-radius-full);
    opacity: 0;
    transition: var(--transition);
}

.nav-item.active::before {
    opacity: 0.1;
}

.nav-item:active {
    transform: scale(0.95);
}

.nav-icon {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.nav-item.active .nav-icon {
    transform: translateY(-1px);
}

.nav-label {
    font-size: 0.6rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.nav-item.active .nav-label {
    font-weight: 700;
}

/* دکمه چت بات مرکزی */
.nav-center {
    position: relative;
    z-index: 3;
    margin: 0 4px;
}

.nav-chat-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    position: relative;
    margin-top: -18px;
}

.chat-icon-container {
    width: var(--chat-button-size);
    height: var(--chat-button-size);
    background: var(--gradient-purple);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-on-primary);
    font-size: 1.3rem;
    transition: var(--transition-fast);
    box-shadow: 0 6px 20px rgba(109, 40, 217, 0.4);
    border: 3px solid var(--nav-color);
}

.nav-chat-button:active .chat-icon-container {
    transform: scale(0.95);
}

.chat-icon-container::before {
    content: '';
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    background: var(--gradient-purple);
    border-radius: var(--border-radius-full);
    z-index: -1;
    opacity: 0.2;
    animation: pulse 2s infinite;
}

.chat-label {
    font-size: 0.6rem;
    font-weight: 700;
    color: var(--primary-color);
    background: var(--nav-color);
    padding: 2px 6px;
    border-radius: var(--border-radius-full);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    position: absolute;
    bottom: -12px;
    white-space: nowrap;
}

/* انیمیشن پالس */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.2;
    }
    50% {
        transform: scale(1.03);
        opacity: 0.15;
    }
    100% {
        transform: scale(1);
        opacity: 0.2;
    }
}

/* اعلان توسعه */
.development-notification {
    position: fixed;
    bottom: calc(var(--nav-height) + var(--space-md));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--gradient-purple);
    color: var(--text-on-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: calc(100% - var(--space-xl));
    width: 90%;
    opacity: 0;
    visibility: hidden;
    backdrop-filter: blur(10px);
}

.development-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    justify-content: space-between;
}

.notification-content i {
    flex-shrink: 0;
}

.notification-content span {
    flex: 1;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-on-primary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 4px;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
    flex-shrink: 0;
}

.notification-close:active {
    background: rgba(255, 255, 255, 0.2);
}

/* انیمیشن‌ها */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* بهبود تعاملات لمسی */
@media (hover: none) and (pointer: coarse) {
    .service-card:active,
    .nav-item:active,
    .course-start-btn:active,
    .explore-courses-btn:active {
        transform: scale(0.95);
        transition: var(--transition-fast);
    }
    
    .nav-chat-button:active .chat-icon-container {
        transform: scale(0.95);
    }
    
    .more-courses-btn:active {
        transform: scale(0.95);
    }
}

/* حالت‌های مختلف صفحه نمایش */
@media (max-width: 320px) {
    .services-grid {
        gap: 4px;
    }
    
    .service-card {
        padding: 10px 4px;
    }
    
    .service-icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    
    .service-name {
        font-size: 0.65rem;
    }
    
    .course-card {
        padding: var(--space-md);
        min-height: 140px;
    }
    
    .course-header {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .course-start-btn {
        width: 100%;
        justify-content: center;
        margin-top: var(--space-sm);
    }
    
    .course-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .stat-item {
        flex: 0 0 calc(50% - 8px);
        justify-content: flex-start;
    }
    
    .stat-divider {
        display: none;
    }
}

@media (min-width: 321px) and (max-width: 375px) {
    .course-card {
        min-height: 150px;
    }
    
    .course-header {
        flex-direction: column;
    }
    
    .course-start-btn {
        align-self: flex-start;
        margin-top: var(--space-sm);
    }
}

@media (min-width: 376px) and (max-width: 480px) {
    .course-card {
        min-height: 160px;
    }
    
    .course-header {
        flex-direction: row;
        align-items: center;
    }
    
    .course-start-btn {
        margin-top: 0;
    }
}

@media (min-width: 481px) {
    .services-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: var(--space-sm);
    }
    
    .service-card {
        padding: var(--space-lg) var(--space-sm);
    }
    
    .service-icon {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
    }
    
    .service-name {
        font-size: 0.75rem;
    }
    
    .course-card {
        min-height: var(--course-card-height);
    }
    
    .main-content {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
}

@media (min-width: 768px) {
    .main-content {
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
    
    .services-grid {
        gap: var(--space-md);
    }
    
    .service-card {
        padding: var(--space-xl) var(--space-md);
    }
    
    .service-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
    
    .service-name {
        font-size: 0.8rem;
    }
    
    .nav-container {
        padding-left: var(--space-xl);
        padding-right: var(--space-xl);
    }
    
    .course-card {
        min-height: 220px;
    }
}

/* وضعیت landscape */
@media (orientation: landscape) and (max-height: 500px) {
    .main-header {
        height: 48px;
    }
    
    .main-content {
        padding-top: calc(48px + var(--space-sm));
    }
    
    .services-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .course-card {
        min-height: 140px;
        padding: var(--space-md);
    }
    
    .bottom-nav {
        display: none;
    }
    
    body {
        padding-bottom: 0;
    }
}

/* پشتیبانی از notch و safe areas */
@supports (padding: max(0px)) {
    .main-header {
        padding-left: max(var(--space-md), env(safe-area-inset-left));
        padding-right: max(var(--space-md), env(safe-area-inset-right));
        padding-top: env(safe-area-inset-top);
        height: calc(var(--header-height) + env(safe-area-inset-top));
    }
    
    .main-content {
        padding-top: calc(var(--header-height) + env(safe-area-inset-top) + var(--space-md));
    }
    
    .bottom-nav {
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .nav-container {
        padding-bottom: calc(var(--space-xs) + env(safe-area-inset-bottom));
    }
}

/* حالت پرینت */
@media print {
    .bottom-nav,
    .main-header,
    .development-notification,
    .more-courses-btn,
    .course-start-btn,
    .explore-courses-btn {
        display: none !important;
    }
    
    body {
        padding: 0 !important;
        background: white !important;
        color: black !important;
    }
    
    .main-content {
        padding-top: var(--space-md) !important;
    }
    
    .course-card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* اسکرول بار سفارشی */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* استایل برای PWA */
.pwa-mode body {
    padding-top: env(safe-area-inset-top);
}

.pwa-mode .main-header {
    padding-top: calc(env(safe-area-inset-top) + 4px);
    height: calc(var(--header-height) + env(safe-area-inset-top));
}

.pwa-mode .main-content {
    padding-top: calc(var(--header-height) + env(safe-area-inset-top) + var(--space-md));
}

/* بهبود فونت‌ها برای خوانایی بهتر */
body {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.3px;
}

/* جلوگیری از انتخاب متن در المان‌های تعاملی */
button, .service-card, .nav-item, .course-start-btn, .explore-courses-btn {
    -webkit-user-select: none;
    user-select: none;
}

/* بهبود انیمیشن‌ها برای عملکرد بهتر */
.course-card, .service-card, .course-empty-state {
    will-change: transform, opacity;
}

/* بهینه‌سازی برای دستگاه‌های با حافظه کم */
@media (max-device-width: 768px) and (max-device-height: 1024px) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}