/* ========================================
   Business Like — Образовательная платформа
   Фирменный стиль: Кузбассразрезуголь
   
   Фирменная палитра:
   - Синий:    #1B189E (R27 G24 B158)
   - Оранжевый: #FF4F13 (R255 G79 B19)
   - Жёлтый:   #FFBB30 (R255 G187 B48)
   - Чёрный:   #1A1A1A (R26 G26 B26)
   
   Шрифты:
   - Заголовки: Affect (Bold, Regular) → используем Montserrat 800
   - Основной текст: Montserrat (Regular 400, Light 300)
======================================== */

:root {
    /* ===== ФИРМЕННАЯ ПАЛИТРА ===== */
    --color-blue: #1B189E;        /* Основной синий */
    --color-orange: #FF4F13;      /* Оранжевый акцент */
    --color-yellow: #FFBB30;      /* Жёлтый */
    --color-black: #1A1A1A;       /* Фирменный чёрный */
    
    /* Производные цвета */
    --primary: #1B189E;
    --primary-dark: #15127A;
    --primary-light: #3D3AB8;
    
    --accent-orange: #FF4F13;
    --accent-yellow: #FFBB30;
    
    /* Акцентные цвета для категорий */
    --accent-beginners: #1B189E;
    --accent-travel: #FF4F13;
    --accent-kids: #FFBB30;
    
    /* Нейтральные цвета */
    --dark: #1A1A1A;
    --gray-dark: #4A4A4A;
    --gray: #888888;
    --gray-light: #E5E5E5;
    --light: #F5F5F5;
    --white: #FFFFFF;
    
    /* Градиенты */
    --gradient-primary: linear-gradient(135deg, #1B189E 0%, #3D3AB8 100%);
    --gradient-hero: linear-gradient(135deg, #1B189E 0%, #1B189E 100%);
    --gradient-beginners: linear-gradient(135deg, #1B189E 0%, #3D3AB8 100%);
    --gradient-travel: linear-gradient(135deg, #FF4F13 0%, #FF7A4D 100%);
    --gradient-kids: linear-gradient(135deg, #FFBB30 0%, #FFD166 100%);
    
    /* Тени */
    --shadow-sm: 0 2px 8px rgba(27, 24, 158, 0.08);
    --shadow-md: 0 4px 20px rgba(27, 24, 158, 0.12);
    --shadow-lg: 0 8px 40px rgba(27, 24, 158, 0.15);
    --shadow-primary: 0 4px 20px rgba(27, 24, 158, 0.3);
    --shadow-orange: 0 4px 20px rgba(255, 79, 19, 0.3);
    
    /* Размеры */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    /* ===== ФИРМЕННЫЕ ШРИФТЫ ===== */
    /* Заголовки: Affect → Montserrat ExtraBold (800) как альтернатива */
    --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    /* Основной текст: Montserrat Regular (400) и Light (300) */
    --font-main: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Переходы */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========================================
   Сброс и базовые стили
======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: 400;  /* Montserrat Regular */
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

/* Фирменные заголовки — имитация Affect через Montserrat ExtraBold */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;  /* ExtraBold — максимально близко к Affect Bold */
    line-height: 1.2;
    color: var(--dark);
}

/* Лёгкий текст — Montserrat Light */
.text-light {
    font-weight: 300;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   Кнопки
======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: 700;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--accent-orange);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(255, 79, 19, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: #E8450F;
    box-shadow: 0 6px 30px rgba(255, 79, 19, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-ghost {
    background: transparent;
    color: var(--dark);
}

.btn-ghost:hover {
    color: var(--primary);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-small {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-icon {
    font-size: 20px;
}

/* ========================================
   Навигация
======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 44px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    text-transform: lowercase;
}

.logo-accent {
    color: var(--accent-orange);
}

.logo-icon {
    font-size: 28px;
    color: var(--accent-orange);
    margin-right: 8px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-weight: 600;
    color: var(--gray-dark);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-auth {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: var(--transition-normal);
}

/* ========================================
   Hero секция
======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 80px;
    background: var(--primary);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    font-size: 48px;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.owl-1 { top: 15%; left: 10%; animation-delay: 0s; }
.book-1 { top: 25%; right: 15%; animation-delay: 1s; }
.star-1 { top: 60%; left: 5%; animation-delay: 2s; }
.globe-1 { bottom: 30%; right: 10%; animation-delay: 1.5s; }
.plane-1 { top: 40%; left: 20%; animation-delay: 0.5s; }

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.highlight {
    font-family: var(--font-heading);
    font-size: 64px;
    font-weight: 800;
    display: block;
    color: var(--accent-orange);
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

/* Hero карточка */
.hero-illustration {
    display: flex;
    justify-content: center;
}

.hero-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-lg);
    animation: cardFloat 4s ease-in-out infinite;
}

.hero-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.level-badge {
    background: var(--accent-orange);
    color: var(--white);
    padding: 6px 12px;
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 700;
}

.progress-text {
    font-size: 14px;
    color: var(--gray-dark);
}

.lesson-preview {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    border-radius: var(--radius-md);
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.play-button {
    width: 60px;
    height: 60px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.play-button:hover {
    transform: scale(1.1);
}

.hero-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark);
}

.progress-bar {
    height: 8px;
    background: var(--gray-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-orange);
    border-radius: 4px;
    transition: width var(--transition-slow);
}

/* Hero волна */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: auto;
}

/* ========================================
   Секции
======================================== */

section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-dark);
}

/* ========================================
   Категории
======================================== */

.categories {
    background: var(--light);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.category-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.category-beginners::before { background: var(--primary); }
.category-travel::before { background: var(--accent-orange); }
.category-kids::before { background: var(--accent-yellow); }

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.category-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.category-desc {
    color: var(--gray-dark);
    margin-bottom: 20px;
}

.category-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary);
    font-weight: 600;
}

.arrow {
    font-size: 24px;
    transition: transform var(--transition-normal);
}

.category-card:hover .arrow {
    transform: translateX(5px);
}

/* ========================================
   Как это работает
======================================== */

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.step-card {
    text-align: center;
    padding: 32px 24px;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--accent-orange);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
}

.step-icon {
    font-size: 56px;
    margin: 40px 0 20px;
}

.step-card h3 {
    font-size: 20px;
    margin-bottom: 8px;
}

.step-card p {
    color: var(--gray-dark);
    font-size: 15px;
}

/* ========================================
   Популярные курсы
======================================== */

.popular-courses {
    background: var(--light);
}

.popular-courses .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

.view-all {
    color: var(--primary);
    font-weight: 700;
    font-size: 16px;
}

.view-all:hover {
    text-decoration: underline;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.course-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.course-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.course-card:hover .course-image img {
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 12px;
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 700;
    color: var(--white);
}

.course-badge.beginner { background: var(--primary); }
.course-badge.travel { background: var(--accent-orange); }
.course-badge.kids { background: var(--accent-yellow); color: var(--dark); }

.course-content {
    padding: 24px;
}

.course-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.course-desc {
    color: var(--gray-dark);
    font-size: 14px;
    margin-bottom: 16px;
}

.course-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--gray-dark);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--gray-light);
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stars {
    color: var(--accent-yellow);
}

.rating-text {
    font-size: 14px;
    color: var(--gray-dark);
}

/* ========================================
   Преимущества
======================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray-dark);
    font-size: 15px;
}

/* ========================================
   CTA секция
======================================== */

.cta-section {
    background: var(--primary);
    padding: 80px 0;
}

.cta-content {
    text-align: center;
    color: var(--white);
}

.cta-owl {
    font-size: 80px;
    margin-bottom: 24px;
    animation: bounce 2s ease-in-out infinite;
}

.cta-content h2 {
    font-size: 36px;
    margin-bottom: 16px;
    color: var(--white);
}

.cta-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 32px;
    color: var(--white);
}

/* ========================================
   Белый текст на синем фоне (primary)
======================================== */

/* Для всех элементов на синем фоне */
.hero h1,
.hero h2,
.hero h3,
.hero p,
.hero span,
.page-header h1,
.page-header h2,
.page-header h3,
.page-header p,
.page-header span,
.cta-section h1,
.cta-section h2,
.cta-section h3,
.cta-section p,
.cta-section span {
    color: var(--white);
}

/* Сохраняем оранжевый акцент */
.hero .highlight {
    color: var(--accent-orange);
}

/* ========================================
   Подвал
======================================== */

.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--gray);
    font-size: 15px;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--gray);
    font-size: 15px;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray);
    font-size: 14px;
}

/* ========================================
   Адаптивность
======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .highlight {
        font-size: 56px;
    }
    
    .hero-subtitle {
        margin: 0 auto 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-illustration {
        display: none;
    }
    
    .categories-grid,
    .courses-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-auth {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .highlight {
        font-size: 42px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .categories-grid,
    .courses-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .popular-courses .section-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}