/* =====================================================
   RevoMed - Modern Medical Education Platform
   Premium CSS with RTL Support, Responsive & Dark Mode
   ===================================================== */

/* =====================================================
   CSS Variables - Design Tokens
   ===================================================== */
:root {
    /* Light Mode Colors */
    --primary: #1A365D;
    --primary-light: #2D4A7C;
    --primary-dark: #0F2744;
    --accent: #2D9596;
    --accent-light: #3DB8B9;
    --accent-dark: #1E7A7B;
    --secondary: #E8F4F4;

    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;

    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --text-muted: #94A3B8;

    --border-color: #E2E8F0;
    --border-light: #F1F5F9;

    --white: #FFFFFF;
    --black: #000000;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(26, 54, 93, 0.03) 0%, rgba(45, 149, 150, 0.05) 100%);
    --gradient-cta: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
    --gradient-card: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);

    /* Typography */
    --font-family: 'Almarai', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.05);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.15);
    --shadow-glow: 0 0 40px rgba(45, 149, 150, 0.15);
    --shadow-card: 0 2px 20px rgba(26, 54, 93, 0.06);
    --shadow-card-hover: 0 12px 40px rgba(26, 54, 93, 0.12);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-loader: 1000;

    /* Layout */
    --header-height: 80px;
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

/* =====================================================
   Dark Mode Variables
   ===================================================== */
[data-theme="dark"] {
    --primary: #60A5FA;
    --primary-light: #93C5FD;
    --primary-dark: #3B82F6;
    --accent: #2DD4BF;
    --accent-light: #5EEAD4;
    --accent-dark: #14B8A6;
    --secondary: rgba(45, 149, 150, 0.15);

    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;

    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
    --text-muted: #64748B;

    --border-color: #334155;
    --border-light: #1E293B;

    --white: #0F172A;
    --black: #F8FAFC;

    --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    --gradient-accent: linear-gradient(135deg, #14B8A6 0%, #2DD4BF 100%);
    --gradient-hero: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(45, 212, 191, 0.08) 100%);
    --gradient-cta: linear-gradient(135deg, #14B8A6 0%, #3B82F6 100%);
    --gradient-card: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6);
    --shadow-card: 0 2px 20px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* =====================================================
   Reset & Base Styles
   ===================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-secondary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* RTL Support */
[dir="rtl"] {
    text-align: right;
}

[dir="ltr"] {
    text-align: left;
}

img, video, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-base);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

::selection {
    background-color: var(--accent);
    color: var(--bg-primary);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* =====================================================
   Utility Classes
   ===================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.text-accent {
    color: var(--accent);
}

.text-gradient {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =====================================================
   Loader
   ===================================================== */
.loader {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loader);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pulse-ring {
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid var(--accent);
    animation: pulse-ring 1.5s ease-out infinite;
}

@keyframes pulse-ring {
    0% {
        transform: scale(0.5);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.loader-logo {
    animation: loader-pulse 1s ease-in-out infinite;
}

.loader-logo circle {
    stroke: var(--primary);
}

.loader-logo path {
    stroke: var(--accent);
}

@keyframes loader-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* =====================================================
   Header & Navigation
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

[data-theme="dark"] .header {
    background: rgba(15, 23, 42, 0.85);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .header.scrolled {
    background: rgba(15, 23, 42, 0.95);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-6);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    z-index: 10;
    flex-shrink: 0;
}

.logo-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
}

.logo-icon circle {
    stroke: var(--primary);
}

.logo-icon path {
    stroke: var(--accent);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: 0.65rem;
    color: var(--text-muted);
    line-height: 1;
    letter-spacing: 0.02em;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.nav-link {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--accent);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-full);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    color: var(--accent);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

/* Language Toggle */
.lang-toggle {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    min-width: 50px;
    text-align: center;
}

.lang-toggle:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

.btn-nav {
    display: none;
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    gap: 6px;
    z-index: 101;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.menu-toggle:hover {
    background: var(--bg-secondary);
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2.5px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.68, -0.6, 0.32, 1.6);
    transform-origin: center;
}

.menu-toggle.active {
    background: var(--accent);
}

.menu-toggle.active span {
    background: #fff;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(255,255,255,0.1), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn:hover::before {
    opacity: 1;
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

[dir="rtl"] .btn-icon {
    transform: scaleX(-1);
}

.btn:hover .btn-icon {
    transform: translateX(3px);
}

[dir="rtl"] .btn:hover .btn-icon {
    transform: scaleX(-1) translateX(3px);
}

/* Primary Button */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(26, 54, 93, 0.25);
}

[data-theme="dark"] .btn-primary {
    color: #0F172A;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(26, 54, 93, 0.35);
}

/* Accent Button */
.btn-accent {
    background: var(--gradient-accent);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(45, 149, 150, 0.25);
}

[data-theme="dark"] .btn-accent {
    color: #0F172A;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(45, 149, 150, 0.35);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--bg-primary);
}

/* White Button */
.btn-white {
    background: var(--bg-primary);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Outline White */
.btn-outline-white {
    background: transparent;
    color: var(--bg-primary);
    border-color: rgba(255, 255, 255, 0.4);
}

[data-theme="dark"] .btn-outline-white {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline-white:hover {
    background: var(--bg-primary);
    color: var(--primary);
    border-color: var(--bg-primary);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-height) + var(--spacing-12)) 0 var(--spacing-16);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(45, 149, 150, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 54, 93, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(45, 149, 150, 0.03) 0%, transparent 70%);
}

.hero > .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

/* Hero Content */
.hero-content {
    max-width: 580px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--secondary);
    color: var(--accent);
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-6);
    border: 1px solid rgba(45, 149, 150, 0.2);
}

.badge-icon {
    font-size: var(--font-size-base);
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, var(--font-size-5xl));
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.15;
    margin-bottom: var(--spacing-5);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    max-width: 480px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-10);
}

/* Hero Stats */
.hero-stats {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-6);
    padding: var(--spacing-5) var(--spacing-6);
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-light);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-plus {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-1);
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-color);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-mockup {
    position: relative;
}

.mockup-phone {
    position: relative;
    width: 260px;
    height: 520px;
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    border-radius: 36px;
    padding: 10px;
    box-shadow: var(--shadow-2xl), 0 0 0 1px rgba(255,255,255,0.1) inset;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 28px;
    overflow: hidden;
}

.phone-screen img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Floating Cards */
.mockup-cards {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    animation: float 4s ease-in-out infinite;
    border: 1px solid var(--border-light);
}

.floating-card .card-icon {
    font-size: var(--font-size-base);
}

.card-1 {
    top: 15%;
    right: -50px;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    left: -70px;
    animation-delay: 0.7s;
}

.card-3 {
    bottom: 20%;
    right: -30px;
    animation-delay: 1.4s;
}

[dir="rtl"] .card-1 { right: auto; left: -50px; }
[dir="rtl"] .card-2 { left: auto; right: -70px; }
[dir="rtl"] .card-3 { right: auto; left: -30px; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-6);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.5;
    transition: opacity var(--transition-base);
}

.scroll-indicator:hover {
    opacity: 1;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--text-secondary);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 7px;
}

.wheel {
    width: 3px;
    height: 7px;
    background: var(--accent);
    border-radius: var(--radius-full);
    animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(10px); }
}

/* =====================================================
   Section Styles
   ===================================================== */
section {
    padding: var(--spacing-20) 0;
}

.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto var(--spacing-12);
}

.section-badge {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--secondary);
    color: var(--accent);
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-3);
    border: 1px solid rgba(45, 149, 150, 0.15);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, var(--font-size-3xl));
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: var(--spacing-3);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-tertiary);
    line-height: 1.7;
}

/* =====================================================
   Courses Section
   ===================================================== */
.courses {
    background: var(--bg-secondary);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-5);
}

.course-card {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-light);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.course-card.featured {
    border-color: var(--accent);
    box-shadow: var(--shadow-card), 0 0 0 1px var(--accent);
}

.course-card.new {
    border-color: var(--primary);
}

.course-badge {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

[dir="rtl"] .course-badge { right: auto; left: var(--spacing-3); }
[dir="ltr"] .course-badge { right: var(--spacing-3); left: auto; }

.course-badge.new-badge {
    background: var(--primary);
}

.course-icon {
    margin-bottom: var(--spacing-3);
}

.course-icon svg {
    width: 48px;
    height: 48px;
}

.course-icon svg circle,
.course-icon svg path,
.course-icon svg rect {
    stroke: var(--primary);
}

.course-icon svg path[fill] {
    fill: var(--accent);
}

.course-title {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.course-subtitle {
    font-size: var(--font-size-xs);
    color: var(--accent);
    font-weight: 700;
    margin-bottom: var(--spacing-3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-features {
    flex: 1;
    margin-bottom: var(--spacing-4);
}

.course-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-1) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.check-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.course-footer {
    margin-top: auto;
}

/* =====================================================
   Features Section
   ===================================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-5);
}

.feature-card {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    text-align: center;
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: var(--secondary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-4);
}

.feature-icon svg {
    width: 36px;
    height: 36px;
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.feature-desc {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: 1.7;
}

/* =====================================================
   Packages Section
   ===================================================== */
.packages {
    background: var(--gradient-card);
}

.year-selector {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-10);
    flex-wrap: wrap;
}

.year-btn {
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.year-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.year-btn.active {
    background: var(--gradient-accent);
    border-color: var(--accent);
    color: #fff;
}

.packages-content {
    display: none;
}

.packages-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

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

.packages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-5);
    max-width: 1000px;
    margin: 0 auto;
}

.package-card {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    text-align: center;
    border: 1px solid var(--border-light);
}

.package-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
}

.package-card.recommended {
    border-color: var(--accent);
    box-shadow: var(--shadow-card), 0 0 0 1px var(--accent);
}

.package-ribbon {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-1) var(--spacing-4);
    background: var(--gradient-accent);
    color: #fff;
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.package-name {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.package-subtitle {
    font-size: var(--font-size-xs);
    color: var(--accent);
    font-weight: 700;
    margin-bottom: var(--spacing-3);
}

.package-includes {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.package-item {
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--secondary);
    color: var(--text-primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-md);
}

.package-plus {
    color: var(--accent);
    font-weight: 700;
}

.package-duration {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-3);
}

.package-desc {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-5);
    min-height: 50px;
    line-height: 1.6;
}

/* =====================================================
   Universities Section
   ===================================================== */
.universities {
    background: var(--gradient-primary);
    padding: var(--spacing-12) 0;
}

.universities .section-badge {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}

.universities .section-title {
    color: #fff;
}

.universities-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-3);
}

.uni-logo {
    padding: var(--spacing-3) var(--spacing-5);
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 700;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.uni-logo:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* =====================================================
   About Section
   ===================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

.about-content .section-badge {
    margin-bottom: var(--spacing-3);
}

.about-content .section-title {
    text-align: start;
    margin-bottom: var(--spacing-5);
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3);
    line-height: 1.8;
}

.about-quote {
    margin-top: var(--spacing-6);
    padding: var(--spacing-5);
    background: var(--secondary);
    border-radius: var(--radius-xl);
    border-right: 4px solid var(--accent);
}

[dir="ltr"] .about-quote {
    border-right: none;
    border-left: 4px solid var(--accent);
}

.about-quote blockquote {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: var(--spacing-2);
    line-height: 1.6;
}

.about-quote cite {
    font-size: var(--font-size-sm);
    color: var(--accent);
    font-style: normal;
    font-weight: 700;
}

.about-visual {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image-wrapper img {
    width: 100%;
    height: auto;
}

.about-badge {
    position: absolute;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-3);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

[dir="rtl"] .about-badge { right: auto; left: var(--spacing-4); }
[dir="ltr"] .about-badge { right: var(--spacing-4); left: auto; }

.about-badge .badge-number {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.about-badge .badge-text {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* =====================================================
   Testimonials / Reviews Section
   ===================================================== */
.testimonials {
    background: var(--bg-secondary);
}

/* Review Tabs */
.review-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-8);
}

.review-tab {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
}

.review-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.review-tab.active {
    background: var(--gradient-accent);
    border-color: var(--accent);
    color: #fff;
}

.review-tab svg {
    flex-shrink: 0;
}

/* Review Content */
.review-content {
    display: none;
}

.review-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

/* Review Slider */
.review-slider-wrap {
    position: relative;
    overflow: hidden;
}

.review-grid {
    display: flex;
    gap: var(--spacing-4);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: var(--spacing-2) 0 var(--spacing-4);
}

.review-grid::-webkit-scrollbar {
    display: none;
}

.review-item {
    flex: 0 0 280px;
    scroll-snap-align: start;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    cursor: pointer;
}

.review-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent);
}

.review-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* Slider Arrows */
.slider-arrows {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3);
    margin-top: var(--spacing-5);
}

.slider-arrow {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-arrow:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.slider-arrow svg {
    width: 20px;
    height: 20px;
}

/* Lightbox */
.review-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-6);
    cursor: pointer;
    animation: fadeIn 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.review-lightbox img {
    max-width: 500px;
    max-height: 85vh;
    border-radius: var(--radius-2xl);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-5);
    right: var(--spacing-5);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
}

/* =====================================================
   App Download Section
   ===================================================== */
.app-download {
    background: var(--bg-secondary);
}

.app-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3);
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: var(--spacing-2);
}

.app-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    min-width: 180px;
}

.app-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.app-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--secondary);
    border-radius: var(--radius-lg);
    color: var(--primary);
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.app-card:hover .app-icon {
    background: var(--accent);
    color: #fff;
}

.app-info {
    display: flex;
    flex-direction: column;
}

.app-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.app-store {
    font-size: var(--font-size-base);
    font-weight: 800;
    color: var(--text-primary);
}

/* =====================================================
   CTA Section
   ===================================================== */
.cta {
    background: var(--gradient-cta);
    padding: var(--spacing-16) 0;
}

.cta-content {
    text-align: center;
    max-width: 650px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.5rem, 4vw, var(--font-size-3xl));
    font-weight: 800;
    color: #fff;
    margin-bottom: var(--spacing-3);
}

.cta-subtitle {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-6);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-3);
}

/* =====================================================
   Contact Section
   ===================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-8);
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3);
}

.contact-card {
    padding: var(--spacing-5);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--accent);
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-3);
}

.contact-card h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.contact-card a,
.contact-card p {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    word-break: break-word;
}

.contact-card a:hover {
    color: var(--accent);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-light);
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(45, 149, 150, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.contact-form button[type="submit"] {
    grid-column: span 2;
    margin-top: var(--spacing-2);
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-12) 0 var(--spacing-6);
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .footer {
    background: var(--bg-primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-links-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-3);
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-3);
    max-width: 280px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: var(--spacing-2);
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.social-link:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
}

.footer-links h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-links a,
.footer-links span {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--accent);
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
}

.contact-list svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.made-with {
    color: var(--text-muted);
}

/* =====================================================
   WhatsApp Float Button
   ===================================================== */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-5);
    right: var(--spacing-5);
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

[dir="rtl"] .whatsapp-float { right: auto; left: var(--spacing-5); }
[dir="ltr"] .whatsapp-float { right: var(--spacing-5); left: auto; }

.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

/* =====================================================
   Back to Top Button
   ===================================================== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-5);
    left: var(--spacing-5);
    width: 44px;
    height: 44px;
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

[dir="rtl"] .back-to-top { left: auto; right: var(--spacing-5); }
[dir="ltr"] .back-to-top { left: var(--spacing-5); right: auto; }

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-3px);
}

/* =====================================================
   Animations
   ===================================================== */
[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate,
[data-aos].visible {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-up"] { transform: translateY(25px); }
[data-aos="fade-down"] { transform: translateY(-25px); }
[data-aos="fade-right"] { transform: translateX(-25px); }
[data-aos="fade-left"] { transform: translateX(25px); }
[dir="rtl"] [data-aos="fade-right"] { transform: translateX(25px); }
[dir="rtl"] [data-aos="fade-left"] { transform: translateX(-25px); }
[data-aos="zoom-in"] { transform: scale(0.95); }

/* =====================================================
   Responsive Design - Tablet
   ===================================================== */
@media (max-width: 1200px) {
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero > .container {
        gap: var(--spacing-8);
    }

    .mockup-phone {
        width: 220px;
        height: 440px;
    }

    .floating-card {
        display: none;
    }
}

@media (max-width: 1024px) {
    /* Mobile Navigation - Simple Slide Menu */
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        height: 100dvh;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 100px var(--spacing-5) var(--spacing-8);
        gap: var(--spacing-3);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.15);
        transform: translateX(100%);
        transition: transform 0.35s ease;
        z-index: 100;
        overflow-y: auto;
        visibility: hidden;
    }

    [dir="rtl"] .nav-links {
        right: auto;
        left: 0;
        transform: translateX(-100%);
        box-shadow: 5px 0 30px rgba(0, 0, 0, 0.15);
    }

    .nav-links.active {
        transform: translateX(0);
        visibility: visible;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: var(--spacing-4) var(--spacing-4);
        font-size: var(--font-size-base);
        font-weight: 700;
        border-radius: var(--radius-lg);
        background: var(--bg-secondary);
        color: var(--text-primary);
        text-align: center;
        transition: all var(--transition-base);
    }

    .nav-link:hover {
        background: var(--accent);
        color: #fff;
    }

    .nav-link.active {
        background: var(--accent);
        color: #fff;
    }

    .nav-link.active::after {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .btn-nav {
        display: none;
    }

    /* Overlay backdrop */
    body.menu-open::after {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }

    /* Hero */
    .hero > .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-subtitle {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .about-content .section-title,
    .about-content .section-badge {
        text-align: center;
    }

    .about-text {
        text-align: center;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }

    .footer-links-wrapper {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-4);
    }

    /* Packages */
    .packages-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* =====================================================
   Responsive Design - Mobile
   ===================================================== */
@media (max-width: 768px) {
    :root {
        --header-height: 70px;
        --container-padding: 1.25rem;
    }

    section {
        padding: var(--spacing-12) 0;
    }

    .section-header {
        margin-bottom: var(--spacing-8);
    }

    /* Hero */
    .hero {
        padding: calc(var(--header-height) + var(--spacing-8)) 0 var(--spacing-8);
        min-height: auto;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-4);
        padding: var(--spacing-4);
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        min-width: 80px;
    }

    /* Courses */
    .courses-grid {
        grid-template-columns: 1fr;
    }

    /* Features - 2 per row */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-3);
    }

    .feature-card {
        padding: var(--spacing-4);
    }

    .feature-icon {
        width: 56px;
        height: 56px;
        margin-bottom: var(--spacing-3);
    }

    .feature-icon svg {
        width: 28px;
        height: 28px;
    }

    .feature-title {
        font-size: var(--font-size-base);
    }

    .feature-desc {
        font-size: var(--font-size-xs);
    }

    /* Packages - 2 per row on mobile */
    .packages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-3);
    }

    .package-card {
        padding: var(--spacing-4);
    }

    .package-name {
        font-size: var(--font-size-base);
    }

    .package-desc {
        font-size: var(--font-size-xs);
        min-height: 40px;
    }

    /* Contact */
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-3);
    }

    .contact-card {
        padding: var(--spacing-4);
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .form-group.full-width {
        grid-column: span 1;
    }

    .contact-form button[type="submit"] {
        grid-column: span 1;
    }

    /* Footer - Better mobile layout */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
        text-align: center;
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-bottom: var(--spacing-4);
        border-bottom: 1px solid var(--border-color);
        margin-bottom: var(--spacing-2);
    }

    .footer-desc {
        max-width: 100%;
        font-size: var(--font-size-xs);
    }

    .footer-social {
        justify-content: center;
    }

    .footer-links-wrapper {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-4);
        text-align: start;
    }

    .footer-links h4 {
        font-size: var(--font-size-xs);
        margin-bottom: var(--spacing-2);
    }

    .footer-links ul {
        gap: var(--spacing-1);
    }

    .footer-links a,
    .footer-links span {
        font-size: var(--font-size-xs);
    }

    .contact-list li {
        justify-content: flex-start;
    }

    .contact-list svg {
        width: 14px;
        height: 14px;
    }

    .footer-bottom {
        padding-top: var(--spacing-3);
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .footer-bottom p {
        font-size: var(--font-size-xs);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-2);
        text-align: center;
    }

    /* CTA */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    /* App Download */
    .app-grid {
        gap: var(--spacing-2);
    }

    .app-card {
        flex: 1;
        min-width: 150px;
        padding: var(--spacing-3);
        gap: var(--spacing-2);
    }

    .app-icon {
        width: 40px;
        height: 40px;
    }

    .app-icon svg {
        width: 20px;
        height: 20px;
    }

    .app-store {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .year-selector {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
        max-width: 280px;
        margin-left: auto;
        margin-right: auto;
    }

    .year-btn {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-xs);
    }

    /* Features - still 2 per row */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
    }

    /* Packages - 2 per row on small screens */
    .packages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
    }

    .package-card {
        padding: var(--spacing-3);
    }

    .package-name {
        font-size: var(--font-size-sm);
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .review-item {
        flex: 0 0 240px;
    }

    .review-tabs {
        gap: var(--spacing-2);
    }

    .review-tab {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-xs);
    }

    .review-lightbox img {
        max-width: 90vw;
    }

    .testimonial-card {
        padding: var(--spacing-5);
    }

    .testimonial-text {
        font-size: var(--font-size-base);
    }

    /* App - keep in one row with scroll */
    .app-grid {
        justify-content: flex-start;
        padding: 0 var(--spacing-4);
    }

    .app-card {
        flex-shrink: 0;
        min-width: auto;
        padding: var(--spacing-3);
    }
}

/* =====================================================
   Print Styles
   ===================================================== */
@media print {
    .header,
    .whatsapp-float,
    .back-to-top,
    .hero-scroll,
    .cta,
    .contact-form-wrapper,
    .theme-toggle,
    .lang-toggle {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }

    section {
        page-break-inside: avoid;
    }
}

/* =====================================================
   LTR Specific Fixes
   ===================================================== */
@media (max-width: 1024px) {
    [dir="ltr"] .nav-links {
        right: 0;
        left: auto;
        transform: translateX(100%);
    }

    [dir="ltr"] .nav-links.active {
        transform: translateX(0);
    }
}