/* ═══════════════════════════════════════════════════════════════════════════
   StudWise Landing Page v4.0 - New Design System
   Based on Brand Style Guide (planning/15_brand_style_guide.txt)
   ═══════════════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════════════════
   CSS VARIABLES - Brand Colors & Design System
   ═══════════════════════════════════════════════════════════════════════════ */

:root {
    /* Primary Colors (Green) - Trust, Success, Money */
    --color-primary: #047857;
    --color-primary-dark: #065f46;
    --color-primary-light: #10b981;
    --color-success: #34D399;

    /* Secondary Colors (Blue) - Technology, Innovation */
    --color-secondary: #2563eb;
    --color-info: #3b82f6;
    --color-accent-blue: #4d9eff;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #047857 0%, #2563eb 50%, #7c7ce6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #34D399 100%);
    --gradient-premium: linear-gradient(135deg, #4d9eff 0%, #7c7ce6 100%);
    --gradient-contrast: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);

    /* Dark Backgrounds */
    --color-bg-dark-primary: #0F172A;
    --color-bg-dark-secondary: #1E293B;
    --color-bg-dark-tertiary: #1a1d29;
    --color-bg-dark-elevated: #252936;
    --color-dark: #1F2937;
    --color-white: #FFFFFF;

    /* Light Backgrounds */
    --color-bg-light-primary: #FFFFFF;
    --color-bg-light-secondary: #F8FAFC;
    --color-bg-light-tertiary: #F1F5F9;

    /* Text Colors */
    --color-text-dark: #0F172A;
    --color-text-light: #FFFFFF;
    --color-text-primary: #F9FAFB;
    --color-text-secondary: #b8bcc8;
    --color-text-tertiary: #8b90a0;
    --color-text-muted: #D1D5DB;
    --color-text-muted-light: #9CA3AF;
    --color-text-gray: #64748B;

    /* Borders & Dividers */
    --color-border-light: #E2E8F0;
    --color-border-dark: rgba(255, 255, 255, 0.12);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-accent: rgba(16, 185, 129, 0.3);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.2);
    --shadow-2xl: 0 20px 48px rgba(0, 0, 0, 0.25);

    /* Colored Shadows */
    --shadow-green: 0 8px 24px rgba(16, 185, 129, 0.3);
    --shadow-blue: 0 8px 24px rgba(37, 99, 235, 0.3);

    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Spacing */
    --space-0: 0px;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 200ms;
    --transition-slow: 300ms;
    --transition-slower: 500ms;
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Typography */
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --font-size-4xl: 48px;
    --font-size-5xl: 64px;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;

    --line-height-tight: 1.1;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Container */
    --container-max-width: 1280px;
    --container-padding: 2rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESET & BASE STYLES
   ═══════════════════════════════════════════════════════════════════════════ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-dark);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CONTAINER
   ═══════════════════════════════════════════════════════════════════════════ */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   UTILITY CLASSES
   ═══════════════════════════════════════════════════════════════════════════ */

.hidden {
    display: none !important;
}

.gradient-text {
    background: linear-gradient(135deg, #047857, #2563eb, #7c7ce6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ═══════════════════════════════════════════════════════════════════════════
   NAVIGATION (SECTION 01)
   ═══════════════════════════════════════════════════════════════════════════ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-slow) var(--ease-in-out);
    background: transparent;
}

.navbar.scrolled {
    background: #0F172A;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    position: relative;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    transition: transform var(--transition-normal) var(--ease-out);
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 28px;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    letter-spacing: -0.02em;
}

/* Desktop Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    margin: 0;
}

.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    padding: var(--space-2) 0;
    transition: color var(--transition-normal) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary-light);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -var(--space-2);
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-success);
    border-radius: var(--radius-sm);
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        width: 0;
        opacity: 0;
    }
    to {
        width: 100%;
        opacity: 1;
    }
}

/* Auth Button */
.nav-auth {
    display: flex;
    align-items: center;
}

.btn-auth {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px 24px;
    background: var(--gradient-hero);
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-green);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.btn-auth:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.btn-auth i {
    font-size: 18px;
}

/* User Menu */
.user-menu-wrapper {
    position: relative;
}

.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 20px;
    background: rgba(37, 41, 54, 0.8);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.user-menu-trigger:hover {
    background: rgba(37, 41, 54, 1);
    border-color: var(--color-border-accent);
}

.user-menu-trigger i {
    transition: transform var(--transition-normal) var(--ease-out);
}

.user-menu-trigger.active i {
    transform: rotate(180deg);
}

.user-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 220px;
    background: var(--color-bg-dark-elevated);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal) var(--ease-out);
    overflow: hidden;
}

.user-menu-trigger.active + .user-menu-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 12px 16px;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    text-decoration: none;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast) var(--ease-out);
}

.menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.menu-item i {
    font-size: 16px;
    color: var(--color-primary-light);
    min-width: 20px;
}

.balance-item {
    cursor: default;
}

.balance-item:hover {
    background: transparent;
}

.balance-item strong {
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.menu-divider {
    height: 1px;
    background: var(--color-border-dark);
    margin: var(--space-2) 0;
}

.logout-item {
    color: #ef4444;
}

.logout-item i {
    color: #ef4444;
}

.logout-item:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Burger Menu (Mobile) */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.burger-menu span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-light);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal) var(--ease-out);
}

.burger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    z-index: 999;
    transition: right var(--transition-slow) var(--ease-in-out);
    overflow-y: auto;
}

.mobile-menu-overlay.active {
    right: 0;
}

.mobile-menu-content {
    padding: var(--space-20) var(--space-6);
    position: relative;
}

.mobile-menu-close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-light);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal) var(--ease-out);
}

.mobile-menu-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.mobile-menu-links {
    list-style: none;
    margin-bottom: var(--space-12);
}

.mobile-menu-links li {
    margin-bottom: var(--space-6);
    opacity: 0;
    animation: slideInRight 0.5s ease-out forwards;
}

.mobile-menu-links li:nth-child(1) { animation-delay: 0.1s; }
.mobile-menu-links li:nth-child(2) { animation-delay: 0.2s; }
.mobile-menu-links li:nth-child(3) { animation-delay: 0.3s; }
.mobile-menu-links li:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.mobile-nav-link {
    display: block;
    color: var(--color-text-light);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: color var(--transition-normal) var(--ease-out);
}

.mobile-nav-link:hover {
    color: var(--color-primary-light);
}

.mobile-menu-auth {
    opacity: 0;
    animation: slideInRight 0.5s ease-out 0.5s forwards;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .nav-menu {
        gap: var(--space-4);
    }

    .nav-link {
        font-size: var(--font-size-sm);
    }

    .btn-auth {
        padding: 10px 20px;
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 768px) {
    .nav-content {
        height: 70px;
    }

    .logo i {
        font-size: 24px;
    }

    .logo span {
        font-size: 24px;
    }

    .nav-menu,
    .nav-auth {
        display: none;
    }

    .burger-menu {
        display: flex;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   SECTIONS - Light & Dark
   ═══════════════════════════════════════════════════════════════════════════ */

.dark-section {
    background: linear-gradient(135deg, var(--color-bg-dark-primary) 0%, var(--color-bg-dark-secondary) 100%);
    color: var(--color-text-light);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.light-section {
    background: linear-gradient(to bottom, var(--color-bg-light-primary) 0%, var(--color-bg-light-secondary) 100%);
    color: var(--color-text-dark);
    padding: 100px 0;
}

@media (max-width: 768px) {
    .dark-section,
    .light-section {
        padding: 60px 0;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   HERO SECTION (SECTION 02)
   ═══════════════════════════════════════════════════════════════════════════ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

/* Background Elements */
.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(16, 185, 129, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 185, 129, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.hero-gradient-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at top right, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
}

/* Hero Content Layout */
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 2;
}

/* Left Content */
.hero-left {
    animation: fadeInUp 0.8s ease-out;
}

/* Status Badge */
.hero-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-success);
    margin-bottom: var(--space-6);
}

.status-pulse {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Hero Title */
.hero-title {
    font-size: clamp(36px, 5vw, 64px);
    font-weight: var(--font-weight-black);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-6);
    color: var(--color-text-light);
}

.hero-title .title-line {
    display: block;
}

.hero-title .title-highlight {
    display: block;
    margin: var(--space-2) 0;
}

/* Hero Description */
.hero-description {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-normal);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-10);
    max-width: 600px;
}

.description-accent {
    color: var(--color-text-light);
    font-weight: var(--font-weight-medium);
}

/* Hero Actions */
.hero-actions {
    margin-bottom: var(--space-12);
}

.hero-actions-default {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* Hero Buttons */
.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: 18px 40px;
    background: var(--gradient-success);
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-green);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.btn-hero-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 16px 40px rgba(16, 185, 129, 0.5);
}

.btn-hero-primary i {
    font-size: 24px;
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: 16px 36px;
    background: transparent;
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    border: 2px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-accent);
}

/* Hero Actions - Authenticated */
.hero-actions-auth {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.hero-user-greeting {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

.hero-balance {
    padding: 6px 16px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-success);
}

.hero-quick-actions {
    display: flex;
    gap: var(--space-3);
}

.btn-hero-action-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 14px 28px;
    background: var(--gradient-hero);
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal) var(--ease-out);
}

.btn-hero-action-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-green);
}

.btn-hero-action-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 14px 28px;
    background: transparent;
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: 2px solid var(--color-border-dark);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal) var(--ease-out);
}

.btn-hero-action-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-accent);
}

/* Hero Statistics */
.hero-stats {
    display: flex;
    gap: var(--space-12);
    margin-top: var(--space-12);
}

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

.stat-number {
    font-size: 48px;
    font-weight: var(--font-weight-black);
    line-height: 1;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Right Visual Area */
.hero-right {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInScale 1s ease-out 0.4s both;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-visual {
    position: relative;
    width: 100%;
    max-width: 500px;
    height: 500px;
}

/* Decorative Circles */
.visual-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(16, 185, 129, 0.2);
}

.visual-circle-1 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: rotate 20s linear infinite;
}

.visual-circle-2 {
    width: 400px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: rotate 30s linear infinite reverse;
}

.visual-circle-3 {
    width: 500px;
    height: 500px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-color: rgba(37, 99, 235, 0.1);
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Floating Badges */
.floating-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 12px 20px;
    background: rgba(37, 41, 54, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-light);
    white-space: nowrap;
    animation: float 3s ease-in-out infinite;
}

.floating-badge i {
    color: var(--color-primary-light);
    font-size: 18px;
}

.badge-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.badge-2 {
    top: 20%;
    right: 5%;
    animation-delay: 0.5s;
}

.badge-3 {
    bottom: 30%;
    left: 5%;
    animation-delay: 1s;
}

.badge-4 {
    bottom: 15%;
    right: 10%;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    font-size: 28px;
    cursor: pointer;
    animation: bounce 2s infinite;
    transition: color var(--transition-normal) var(--ease-out);
    z-index: 10;
}

.scroll-indicator:hover {
    color: var(--color-primary-light);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Hero Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .hero-content {
        gap: var(--space-12);
    }

    .hero-visual {
        max-width: 400px;
        height: 400px;
    }

    .visual-circle-1 {
        width: 250px;
        height: 250px;
    }

    .visual-circle-2 {
        width: 350px;
        height: 350px;
    }

    .visual-circle-3 {
        width: 450px;
        height: 450px;
    }

    .floating-badge {
        padding: 10px 16px;
        font-size: var(--font-size-xs);
    }

    .floating-badge i {
        font-size: 16px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .hero-right {
        display: none;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .hero-actions-default {
        flex-direction: column;
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        justify-content: center;
    }

    .btn-hero-primary {
        padding: 16px 32px;
        font-size: var(--font-size-lg);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
    }

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

    .stat-number {
        font-size: 36px;
    }

    .scroll-indicator {
        display: none;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   DEMO OFFER SECTION (SECTION 03)
   ═══════════════════════════════════════════════════════════════════════════ */

.demo-offer {
    text-align: center;
}

/* Demo Badge */
.demo-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 24px;
    background: var(--gradient-success);
    color: var(--color-text-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: var(--shadow-green);
    margin-bottom: var(--space-6);
    animation: scalePulse 2s infinite;
}

.demo-badge i {
    font-size: 20px;
}

@keyframes scalePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Section Title & Subtitle */
.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: var(--font-weight-black);
    line-height: var(--line-height-tight);
    color: var(--color-text-dark);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-normal);
    color: var(--color-text-gray);
    margin-bottom: var(--space-12);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.highlight-green {
    color: var(--color-primary);
}

/* Demo Features Grid */
.demo-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto var(--space-12);
}

.demo-card {
    background: var(--color-bg-light-primary);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-10) var(--space-6);
    transition: all var(--transition-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.demo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-hero);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal) var(--ease-out);
}

.demo-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
}

.demo-card:hover::before {
    transform: scaleX(1);
}

.demo-icon {
    font-size: 56px;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
    transition: transform var(--transition-normal) var(--ease-out);
}

.demo-card:hover .demo-icon {
    transform: scale(1.1) rotate(5deg);
}

.demo-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-dark);
    margin-bottom: var(--space-3);
}

.demo-card p {
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-gray);
    margin: 0;
}

/* Demo CTA */
.demo-cta {
    margin-bottom: var(--space-10);
}

.btn-demo-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: 20px 48px;
    background: var(--gradient-success);
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-green);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
    margin-bottom: var(--space-3);
}

.btn-demo-primary:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 16px 40px rgba(16, 185, 129, 0.6);
    filter: brightness(110%);
}

.btn-demo-primary i {
    font-size: 24px;
}

.demo-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-gray);
    margin: 0;
}

.demo-note i {
    color: var(--color-primary-light);
}

/* Demo Benefits */
.demo-benefits {
    display: flex;
    justify-content: center;
    gap: var(--space-10);
    flex-wrap: wrap;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-dark);
}

.benefit-item i {
    font-size: 20px;
    color: var(--color-primary-light);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .demo-features {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .demo-card {
        padding: var(--space-8) var(--space-5);
    }

    .btn-demo-primary {
        width: 100%;
        padding: 18px 32px;
        font-size: var(--font-size-lg);
    }

    .demo-benefits {
        flex-direction: column;
        align-items: center;
        gap: var(--space-4);
    }

    .benefit-item {
        font-size: var(--font-size-sm);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   04. PRICE COMPARISON SECTION (1900₽ VS 20000₽)
   ═══════════════════════════════════════════════════════════════════════════ */

.price-comparison {
    padding: var(--space-16) 0;
    position: relative;
    overflow: hidden;
}

.price-comparison .section-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-black);
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--space-4);
    line-height: var(--line-height-tight);
}

.price-comparison .section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-muted-light);
    text-align: center;
    margin-bottom: var(--space-12);
    line-height: var(--line-height-normal);
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto var(--space-12) auto;
}

/* Comparison Cards */
.comparison-card {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-10);
    transition: all var(--transition-normal) var(--ease-out);
}

/* Left Card - Traditional Author (Negative) */
.comparison-card.card-old {
    border: 2px solid rgba(239, 68, 68, 0.5);
    opacity: 0.85;
}

.comparison-card.card-old:hover {
    opacity: 1;
    border-color: rgba(239, 68, 68, 0.7);
}

/* Right Card - StudWise (Featured - Positive) */
.comparison-card.card-new.featured {
    border: 2px solid var(--color-primary);
    background: rgba(4, 120, 87, 0.1);
    box-shadow: 0 12px 40px rgba(4, 120, 87, 0.3);
    transform: scale(1.05);
}

.comparison-card.card-new.featured:hover {
    transform: scale(1.08);
    box-shadow: 0 16px 48px rgba(4, 120, 87, 0.4);
}

/* Recommended Badge */
.badge-recommended {
    position: absolute;
    top: -12px;
    right: var(--space-6);
    background: var(--color-success);
    color: var(--color-text-dark);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 6px 16px;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(52, 211, 153, 0.4);
    animation: subtle-pulse 2s ease-in-out infinite;
}

@keyframes subtle-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(52, 211, 153, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(52, 211, 153, 0.6);
    }
}

/* Card Header */
.comparison-card .card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.comparison-card .card-header i {
    font-size: var(--font-size-3xl);
    color: var(--color-text-light);
}

.comparison-card.card-old .card-header i {
    color: #EF4444;
}

.comparison-card.card-new .card-header i {
    color: var(--color-primary-light);
}

.comparison-card .card-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    margin: 0;
}

/* Price */
.comparison-card .price {
    margin-bottom: var(--space-8);
    text-align: center;
}

.comparison-card .price .amount {
    font-size: 42px;
    font-weight: var(--font-weight-black);
    line-height: 1;
}

.comparison-card.card-old .price .amount {
    color: #EF4444;
    text-decoration: line-through;
    opacity: 0.8;
}

.comparison-card.card-new .price .amount {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Features List */
.comparison-card .features-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-6) 0;
}

.comparison-card .features-list li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

.comparison-card .features-list li:last-child {
    border-bottom: none;
}

.comparison-card .features-list li i {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.comparison-card.card-old .features-list li i {
    color: #EF4444;
}

.comparison-card.card-new .features-list li i {
    color: var(--color-primary-light);
}

/* Choose Button */
.btn-choose {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: 100%;
    padding: var(--space-4) var(--space-6);
    background: var(--gradient-success);
    color: var(--color-text-dark);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-choose:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

.btn-choose:active {
    transform: translateY(0);
}

/* Savings Block */
.savings-block {
    max-width: 700px;
    margin: 0 auto var(--space-12) auto;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
}

.savings-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    margin: 0 0 var(--space-6) 0;
    line-height: 1.3;
}

.savings-amount {
    color: var(--color-success);
}

.savings-percent {
    color: var(--color-primary-light);
}

/* Progress Bar */
.progress-bar-container {
    position: relative;
    width: 100%;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-4);
}

.progress-bar-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--gradient-success);
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.5s var(--ease-out);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.progress-bar-fill[data-progress="90"] {
    animation: progress-fill 1.5s var(--ease-out) forwards;
}

@keyframes progress-fill {
    from {
        width: 0;
    }
    to {
        width: 90%;
    }
}

.savings-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted-light);
    margin: 0;
}

/* Comparison CTA */
.comparison-cta {
    text-align: center;
}

.btn-comparison-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-10);
    background: var(--gradient-hero);
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
    box-shadow: var(--shadow-green);
}

.btn-comparison-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 32px rgba(4, 120, 87, 0.4);
}

.btn-comparison-cta:active {
    transform: translateY(0) scale(0.98);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .price-comparison {
        padding: var(--space-12) 0;
    }

    .price-comparison .section-title {
        font-size: var(--font-size-3xl);
    }

    .price-comparison .section-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-8);
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .comparison-card {
        padding: var(--space-8) var(--space-6);
    }

    .comparison-card.card-new.featured {
        transform: scale(1);
    }

    .comparison-card.card-new.featured:hover {
        transform: scale(1.02);
    }

    .badge-recommended {
        right: var(--space-4);
        font-size: 10px;
        padding: 4px 12px;
    }

    .comparison-card .card-header h3 {
        font-size: var(--font-size-xl);
    }

    .comparison-card .price .amount {
        font-size: 36px;
    }

    .comparison-card .features-list li {
        font-size: var(--font-size-sm);
        padding: var(--space-3) 0;
    }

    .savings-block {
        padding: var(--space-6);
    }

    .savings-title {
        font-size: var(--font-size-xl);
    }

    .progress-bar-container {
        height: 24px;
    }

    .btn-comparison-cta {
        width: 100%;
        padding: var(--space-4) var(--space-6);
        font-size: var(--font-size-lg);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   05. HOW IT WORKS SECTION (КАК ЭТО РАБОТАЕТ)
   ═══════════════════════════════════════════════════════════════════════════ */

.how-it-works {
    text-align: center;
}

.how-it-works .section-title {
    color: var(--color-text-dark);
}

.how-it-works .section-subtitle {
    color: var(--color-text-gray);
}

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0;
    max-width: 1200px;
    margin: 0 auto var(--space-12);
    align-items: center;
}

/* Step Cards */
.step-card {
    background: var(--color-bg-light-primary);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    position: relative;
    transition: all var(--transition-normal) var(--ease-out);
    grid-column: span 1;
}

.step-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
}

/* Step Number */
.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 48px;
    font-weight: var(--font-weight-black);
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

/* Step Icon */
.step-icon {
    font-size: 64px;
    margin: var(--space-6) 0 var(--space-4);
    color: var(--color-primary);
    transition: transform var(--transition-normal) var(--ease-out);
}

.step-card:hover .step-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Step Title */
.step-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-dark);
    margin-bottom: var(--space-3);
    line-height: var(--line-height-tight);
}

/* Step Description */
.step-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-gray);
    margin: 0;
}

/* Step Connectors */
.step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    grid-column: span 1;
    padding: 0 var(--space-2);
}

.connector-line {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: relative;
}

.connector-line::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid var(--color-primary-light);
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

/* CTA */
.how-it-works-cta {
    text-align: center;
}

.btn-how-it-works {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-10);
    background: var(--gradient-success);
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
    box-shadow: var(--shadow-green);
}

.btn-how-it-works:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 16px 40px rgba(16, 185, 129, 0.5);
}

.btn-how-it-works i {
    font-size: 24px;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .step-card {
        grid-column: span 1;
    }

    .step-connector {
        display: none;
    }
}

@media (max-width: 768px) {
    .steps-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        position: relative;
    }

    .step-card {
        grid-column: span 1;
        padding: var(--space-6) var(--space-5);
    }

    .step-number {
        font-size: 36px;
        top: -16px;
    }

    .step-icon {
        font-size: 48px;
        margin: var(--space-4) 0 var(--space-3);
    }

    .step-title {
        font-size: var(--font-size-lg);
    }

    .step-description {
        font-size: var(--font-size-sm);
    }

    /* Vertical connectors for mobile */
    .step-connector {
        display: none;
    }

    .btn-how-it-works {
        width: 100%;
        padding: var(--space-4) var(--space-6);
        font-size: var(--font-size-lg);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   06. ADVANTAGES SECTION (ПРЕИМУЩЕСТВА СЕРВИСА)
   ═══════════════════════════════════════════════════════════════════════════ */

.advantages {
    text-align: center;
}

.advantages .section-title {
    color: var(--color-text-light);
}

.advantages .section-subtitle {
    color: var(--color-text-muted-light);
}

/* Advantages Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
}

/* Advantage Cards */
.advantage-card {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    transition: all var(--transition-normal) var(--ease-out);
    position: relative;
    text-align: center;
}

.advantage-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl);
    background: rgba(255, 255, 255, 0.08);
}

/* Featured Card */
.advantage-card.featured {
    border-color: var(--color-primary);
    background: rgba(4, 120, 87, 0.1);
    box-shadow: 0 8px 24px rgba(4, 120, 87, 0.2);
}

.advantage-card.featured:hover {
    box-shadow: 0 12px 32px rgba(4, 120, 87, 0.3);
}

/* Exclusive Badge */
.exclusive-badge {
    position: absolute;
    top: -12px;
    right: var(--space-4);
    background: var(--gradient-success);
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 12px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-green);
}

/* Advantage Icon */
.advantage-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform var(--transition-normal) var(--ease-out);
}

.advantage-card:hover .advantage-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Advantage Title */
.advantage-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    margin-bottom: var(--space-3);
    line-height: var(--line-height-tight);
}

/* Advantage Description */
.advantage-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .advantage-card {
        padding: var(--space-6) var(--space-5);
    }

    .advantage-icon {
        font-size: 40px;
    }

    .advantage-title {
        font-size: var(--font-size-lg);
    }

    .advantage-description {
        font-size: var(--font-size-sm);
    }

    .exclusive-badge {
        font-size: 10px;
        padding: 3px 10px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   10. TESTIMONIALS SECTION (ОТЗЫВЫ СТУДЕНТОВ)
   ═══════════════════════════════════════════════════════════════════════════ */

.testimonials {
    text-align: center;
}

.testimonials .section-title {
    color: var(--color-text-dark);
}

.testimonials .section-subtitle {
    color: var(--color-text-gray);
}

/* Overall Rating */
.overall-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-12);
}

.rating-stars {
    display: flex;
    gap: 4px;
}

.rating-stars i {
    font-size: 24px;
    color: #F59E0B;
}

.rating-text {
    font-size: var(--font-size-base);
    color: var(--color-text-gray);
    font-weight: var(--font-weight-medium);
}

/* Testimonials Grid */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto var(--space-12);
}

/* Testimonial Cards */
.testimonial-card {
    background: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-normal) var(--ease-out);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    text-align: left;
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--color-primary);
}

/* Testimonial Rating */
.testimonial-rating {
    display: flex;
    gap: 4px;
}

.testimonial-rating i {
    font-size: 18px;
    color: #F59E0B;
}

.testimonial-rating i.far {
    color: #D1D5DB;
}

/* Testimonial Text */
.testimonial-text {
    font-size: 15px;
    line-height: var(--line-height-relaxed);
    color: var(--color-text-gray);
    font-style: italic;
    margin: 0;
    flex: 1;
}

/* Testimonial Author */
.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-light);
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-hero);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
}

.author-info {
    flex: 1;
}

.author-name {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-dark);
    margin-bottom: 2px;
}

.author-details {
    font-size: 14px;
    color: var(--color-text-tertiary);
    line-height: 1.4;
}

/* Testimonials CTA */
.testimonials-cta {
    text-align: center;
}

.btn-testimonials-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-10);
    background: var(--gradient-success);
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
    box-shadow: var(--shadow-green);
}

.btn-testimonials-cta:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 16px 40px rgba(16, 185, 129, 0.5);
}

.btn-testimonials-cta:active {
    transform: translateY(0) scale(0.98);
}

.btn-testimonials-cta i {
    font-size: 24px;
}

/* ─────────────────────────────────────────────────────────────────────────
   Testimonials Responsive
   ───────────────────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }

    .overall-rating {
        margin-bottom: var(--space-10);
    }

    .rating-stars i {
        font-size: 20px;
    }

    .rating-text {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 768px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .overall-rating {
        flex-direction: column;
        gap: var(--space-2);
        margin-bottom: var(--space-8);
    }

    .rating-stars i {
        font-size: 18px;
    }

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

    .testimonial-rating i {
        font-size: 16px;
    }

    .testimonial-text {
        font-size: 14px;
    }

    .author-avatar {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-sm);
    }

    .author-name {
        font-size: 15px;
    }

    .author-details {
        font-size: 13px;
    }

    .btn-testimonials-cta {
        width: 100%;
        padding: var(--space-4) var(--space-6);
        font-size: var(--font-size-lg);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   11. FAQ SECTION
   ═══════════════════════════════════════════════════════════════════════════ */

.faq {
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.5), transparent);
}

.faq .section-title {
    color: var(--color-text-light);
    font-size: clamp(32px, 4vw, 48px);
    font-weight: var(--font-weight-black);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-4);
}

.faq .section-subtitle {
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    margin-top: var(--space-3);
    margin-bottom: var(--space-12);
}

/* FAQ Container */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* FAQ Item */
.faq-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal) var(--ease-in-out);
}

.faq-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(79, 70, 229, 0.3);
}

.faq-item.active {
    border-left: 3px solid var(--color-secondary);
    background: rgba(79, 70, 229, 0.05);
}

/* FAQ Question */
.faq-question {
    padding: var(--space-6) var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    gap: var(--space-4);
}

.faq-question span {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
    flex: 1;
    line-height: 1.5;
}

.faq-icon {
    font-size: 20px;
    color: var(--color-primary);
    transition: all var(--transition-fast) var(--ease-in-out);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--color-secondary);
}

/* FAQ Answer */
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) var(--ease-in-out),
                padding var(--transition-slow) var(--ease-in-out),
                opacity var(--transition-normal) var(--ease-in-out);
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0 var(--space-8) var(--space-6);
    opacity: 1;
}

.faq-answer p {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin: 0;
}

/* FAQ CTA */
.faq-cta {
    margin-top: var(--space-12);
    text-align: center;
}

.faq-cta-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    font-weight: 500;
}

.btn-faq-support {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    background: linear-gradient(135deg, #0088cc 0%, #0077b5 100%);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-in-out);
    box-shadow: 0 4px 12px rgba(0, 136, 204, 0.3);
}

.btn-faq-support:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 136, 204, 0.4);
}

.btn-faq-support:active {
    transform: translateY(0);
}

.btn-faq-support i {
    font-size: 20px;
}

/* ─────────────────────────────────────────────────────────────────────────
   FAQ Responsive
   ───────────────────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
    .faq {
        padding: var(--space-16) 0;
    }

    .faq-container {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .faq {
        padding: var(--space-12) 0;
    }

    .faq .section-subtitle {
        font-size: var(--font-size-md);
        margin-bottom: var(--space-8);
    }

    .faq-question {
        padding: var(--space-5) var(--space-6);
    }

    .faq-question span {
        font-size: 16px;
    }

    .faq-icon {
        font-size: 18px;
    }

    .faq-item.active .faq-answer {
        padding: 0 var(--space-6) var(--space-5);
    }

    .faq-answer p {
        font-size: 15px;
    }

    .faq-cta-text {
        font-size: var(--font-size-md);
    }

    .btn-faq-support {
        width: 100%;
        justify-content: center;
        padding: var(--space-4) var(--space-6);
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   13. FINAL CTA SECTION
   ═══════════════════════════════════════════════════════════════════════════ */

.final-cta {
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: var(--space-20) 0;
}

.final-cta-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #EC4899 100%);
    z-index: 0;
}

.cta-gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse-gradient 4s ease-in-out infinite;
}

@keyframes pulse-gradient {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.cta-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px, 70px 70px;
    animation: pattern-move 20s linear infinite;
}

@keyframes pattern-move {
    0% {
        background-position: 0 0, 0 0;
    }
    100% {
        background-position: 50px 50px, 70px 70px;
    }
}

.final-cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.final-cta-title {
    font-size: 48px;
    font-weight: 900;
    color: #FFFFFF;
    margin-bottom: var(--space-4);
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    line-height: 1.2;
}

.final-cta-subtitle {
    font-size: 22px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    font-weight: 400;
}

.btn-final-cta {
    background: #FFFFFF;
    color: #4F46E5;
    font-size: 22px;
    font-weight: 700;
    padding: 24px 48px;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-normal) var(--ease-out);
    margin-bottom: var(--space-2);
}

.btn-final-cta:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    background: rgba(255, 255, 255, 0.95);
}

.btn-final-cta:active {
    transform: translateY(-2px) scale(1.02);
}

.btn-final-cta .fa-rocket {
    font-size: 24px;
    animation: rocket-bounce 2s ease-in-out infinite;
}

@keyframes rocket-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

.btn-subtext {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-8);
    font-weight: 400;
}

.final-cta-features {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    margin-top: var(--space-6);
}

.cta-feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.95);
    font-size: 16px;
    font-weight: 500;
}

.cta-feature-item i {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
}

/* Tablet */
@media (max-width: 1024px) {
    .final-cta {
        min-height: 350px;
        padding: var(--space-16) 0;
    }

    .final-cta-title {
        font-size: 36px;
    }

    .final-cta-subtitle {
        font-size: 18px;
    }

    .btn-final-cta {
        font-size: 20px;
        padding: 20px 40px;
    }

    .final-cta-features {
        gap: var(--space-6);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .final-cta {
        min-height: 450px;
        padding: var(--space-12) 0;
    }

    .final-cta-title {
        font-size: 28px;
        margin-bottom: var(--space-3);
    }

    .final-cta-subtitle {
        font-size: 16px;
        margin-bottom: var(--space-6);
    }

    .btn-final-cta {
        font-size: 18px;
        padding: 18px 36px;
        width: 100%;
        max-width: 320px;
        justify-content: center;
    }

    .btn-subtext {
        font-size: 14px;
    }

    .final-cta-features {
        flex-direction: column;
        gap: var(--space-4);
        align-items: flex-start;
        text-align: left;
        max-width: 320px;
        margin: var(--space-6) auto 0;
    }

    .cta-feature-item {
        font-size: 14px;
    }

    .cta-feature-item i {
        font-size: 18px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   14. FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */

.footer {
    background: #1F2937;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

/* Footer Main - 4 Columns */
.footer-main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

/* Footer Column */
.footer-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Footer Logo */
.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
    transition: transform var(--transition-normal) var(--ease-out);
}

.footer-logo:hover {
    animation: pulse-footer 0.6s ease-in-out;
}

@keyframes pulse-footer {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.footer-logo i {
    font-size: 24px;
    color: var(--color-primary-light);
}

.footer-logo span {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
}

/* Footer Description */
.footer-description {
    font-size: 15px;
    line-height: var(--line-height-normal);
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-4) 0;
    max-width: 280px;
}

/* Footer Socials */
.footer-socials {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-secondary);
    font-size: 20px;
    transition: all var(--transition-normal) var(--ease-out);
    text-decoration: none;
}

.social-link:hover {
    transform: scale(1.1);
}

/* Telegram */
.social-link[aria-label="Telegram"]:hover {
    background: #0088cc;
    color: var(--color-white);
}

/* VK */
.social-link[aria-label="VK"]:hover {
    background: #0077ff;
    color: var(--color-white);
}

/* YouTube */
.social-link[aria-label="YouTube"]:hover {
    background: #ff0000;
    color: var(--color-white);
}

/* Instagram */
.social-link[aria-label="Instagram"]:hover {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: var(--color-white);
}

/* Footer Column Title */
.footer-column-title {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    margin: 0 0 var(--space-4) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Footer Links */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links li a {
    font-size: 15px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal) var(--ease-out);
    display: block;
}

.footer-links li a:hover {
    color: var(--color-text-light);
    padding-left: 4px;
}

/* Footer Contacts */
.footer-contacts {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-contacts li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 15px;
    color: var(--color-text-secondary);
}

.footer-contacts li i {
    font-size: 16px;
    color: var(--color-primary-light);
    flex-shrink: 0;
    width: 20px;
}

.footer-contacts li a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal) var(--ease-out);
}

.footer-contacts li a:hover {
    color: var(--color-text-light);
}

/* Footer Bottom */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    gap: var(--space-6);
    flex-wrap: wrap;
}

.footer-copyright {
    font-size: 14px;
    color: var(--color-text-tertiary);
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.footer-legal a {
    font-size: 13px;
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: all var(--transition-normal) var(--ease-out);
}

.footer-legal a:hover {
    color: var(--color-text-light);
    text-decoration: underline;
}

.footer-legal .separator {
    font-size: 13px;
    color: var(--color-text-tertiary);
    margin: 0 4px;
}

/* ─────────────────────────────────────────────────────────────────────────
   Footer Responsive
   ───────────────────────────────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 1024px) {
    .footer {
        padding: 50px 0 30px;
    }

    .footer-main {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-8);
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .footer {
        padding: 40px 0 24px;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-column {
        text-align: left;
    }

    .footer-description {
        max-width: 100%;
    }

    .footer-socials {
        justify-content: flex-start;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .footer-legal {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .footer-legal .separator {
        display: none;
    }

    .footer-legal a {
        display: block;
        padding: 4px 0;
    }

    .footer-copyright {
        font-size: 13px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   COOKIE CONSENT BANNER
   ═══════════════════════════════════════════════════════════════════════════ */

.cookie-consent-banner {
    position: fixed;
    bottom: -200px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    padding: var(--space-5);
    box-shadow: var(--shadow-2xl);
    z-index: 999;
    border-top: 2px solid var(--color-border-accent);
    transition: bottom var(--transition-slower) var(--ease-in-out);
}

.cookie-consent-banner.show {
    bottom: 0;
}

.cookie-consent-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.cookie-consent-text {
    flex: 1;
}

.cookie-consent-text p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    margin: 0;
}

.cookie-consent-text a {
    color: var(--color-primary-light);
    text-decoration: underline;
    transition: color var(--transition-normal) var(--ease-out);
}

.cookie-consent-text a:hover {
    color: var(--color-success);
}

.cookie-consent-actions {
    display: flex;
    gap: var(--space-3);
}

.cookie-consent-btn {
    padding: 10px 20px;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal) var(--ease-out);
}

.cookie-consent-btn.accept {
    background: var(--gradient-success);
    color: var(--color-text-light);
    box-shadow: var(--shadow-green);
}

.cookie-consent-btn.accept:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.cookie-consent-btn.decline {
    background: transparent;
    border: 1px solid var(--color-border-dark);
    color: var(--color-text-secondary);
}

.cookie-consent-btn.decline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-light);
}

@media (max-width: 768px) {
    .cookie-consent-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-consent-actions {
        width: 100%;
    }

    .cookie-consent-btn {
        flex: 1;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ACCESSIBILITY
   ═══════════════════════════════════════════════════════════════════════════ */

/* Focus states */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}