/*
===========================================
АССОЦИАЦИЯ НЕЙРОТЕХНОЛОГИЙ - ДИЗАЙН СИСТЕМА
===========================================
*/

/*
===========================================
1. CSS ПЕРЕМЕННЫЕ (DESIGN TOKENS)
===========================================
*/
:root {
    /* Основные цвета */
    --color-primary-50: #f0f9ff;
    --color-primary-100: #e0f2fe;
    --color-primary-200: #bae6fd;
    --color-primary-300: #7dd3fc;
    --color-primary-400: #38bdf8;
    --color-primary-500: #0ea5e9;  /* Основной синий */
    --color-primary-600: #0284c7;
    --color-primary-700: #0369a1;
    --color-primary-800: #075985;
    --color-primary-900: #0c4a6e;
    
    /* Акцентные цвета */
    --color-accent-500: #8b5cf6;    /* Фиолетовый для BCI */
    --color-accent-600: #7c3aed;
    
    /* Нейтральные тона */
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e1;
    --color-neutral-400: #94a3b8;
    --color-neutral-500: #64748b;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    
    /* Цветовая палитра - Background */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    
    /* Цветовая палитра - Text */
    --color-text-primary: #0f172a;
    --color-text-secondary: #334155;
    --color-text-tertiary: #64748b;
    --color-text-inverse: #ffffff;
    
    /* Типографика - Семейства шрифтов */
    --font-serif: Georgia, 'Times New Roman', Times, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Типографика - Размеры шрифтов */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */
    
    /* Типографика - Веса шрифтов */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Типографика - Высота строк */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Отступы (Spacing) */
    --spacing-0: 0;
    --spacing-1: 0.25rem;    /* 4px */
    --spacing-2: 0.5rem;     /* 8px */
    --spacing-3: 0.75rem;    /* 12px */
    --spacing-4: 1rem;       /* 16px */
    --spacing-5: 1.25rem;    /* 20px */
    --spacing-6: 1.5rem;     /* 24px */
    --spacing-8: 2rem;       /* 32px */
    --spacing-10: 2.5rem;    /* 40px */
    --spacing-12: 3rem;      /* 48px */
    --spacing-16: 4rem;      /* 64px */
    --spacing-20: 5rem;      /* 80px */
    --spacing-24: 6rem;      /* 96px */
    --spacing-32: 8rem;      /* 128px */
    --spacing-40: 10rem;     /* 160px */
    --spacing-48: 12rem;     /* 192px */
    --spacing-56: 14rem;     /* 224px */
    --spacing-64: 16rem;     /* 256px */
    
    /* Радиусы закругления */
    --radius-sm: 0.125rem;   /* 2px */
    --radius-base: 0.25rem;  /* 4px */
    --radius-md: 0.375rem;   /* 6px */
    --radius-lg: 0.5rem;     /* 8px */
    --radius-xl: 0.75rem;    /* 12px */
    --radius-2xl: 1rem;      /* 16px */
    --radius-3xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* Тени */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/*
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2. RESET И БАЗОВЫЕ СТИЛИ
===========================================
*/
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/*
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3. ТИПОГРАФИКА
===========================================
*/
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-8);
}

h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-6);
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-4);
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3);
}

p {
    margin-bottom: var(--spacing-4);
}

/* Вспомогательные классы для текста */
.text-secondary {
    color: var(--color-text-secondary);
}

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

/*
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4. LAYOUT КОМПОНЕНТЫ
===========================================
*/
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.section {
    padding: var(--spacing-24) 0;
}

.section-compact {
    padding: var(--spacing-16) 0;
}

/* Grid система */
.grid {
    display: grid;
    gap: var(--spacing-8);
}

.grid-cols-1 {
    grid-template-columns: 1fr;
}

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

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

/*
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5. КНОПКИ
===========================================
*/
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4) var(--spacing-8);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

.btn-primary {
    background-color: var(--color-primary-500);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-base);
}

.btn-primary:hover {
    background-color: var(--color-primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 2px solid var(--color-neutral-300);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--color-neutral-50);
    border-color: var(--color-neutral-400);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/*
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6. КАРТОЧКИ
===========================================
*/
.card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-3xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-neutral-200);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-feature {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-3xl);
    padding: var(--spacing-10);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-neutral-200);
    transition: all 0.3s ease;
}

.card-feature:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/*
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7. НАВИГАЦИЯ
===========================================
*/
.nav-header {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-5) 0;
    border-bottom: none;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

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

.nav-logo {
    font-family: var(--font-sans);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

.nav-logo-link {
    text-decoration: none;
    color: inherit;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-8);
    align-items: center;
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

.nav-link:hover {
    color: var(--color-text-primary);
    transform: translateY(-1px);
}

.nav-link:active {
    transform: translateY(0);
}

/*
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8. HERO СЕКЦИЯ
===========================================
*/
.hero {
    position: relative;
    min-height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-bg-secondary) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--color-text-primary);
}

.hero-title {
    margin-bottom: var(--spacing-6);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-8);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
}

/*
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9. СПЕЦИАЛЬНЫЕ КОМПОНЕНТЫ - WEBGL THREADS
===========================================
*/
.threads-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

/*
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10. СТАТИСТИКА
===========================================
*/
.stats-container {
    display: flex;
    gap: var(--spacing-20);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.stats-item {
    text-align: center;
    min-width: 120px;
}

.stats-value {
    font-family: var(--font-serif);
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
}

.stats-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-3);
    font-weight: var(--font-weight-medium);
}

/*
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11. TIMELINE (ВРЕМЕННАЯ ШКАЛА)
===========================================
*/
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-primary-500);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-12);
    width: 50%;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-left: var(--spacing-8);
}

.timeline-item:nth-child(odd) {
    padding-right: var(--spacing-8);
    text-align: right;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: var(--spacing-4);
    width: 16px;
    height: 16px;
    background: var(--color-primary-500);
    border-radius: 50%;
    border: 3px solid var(--color-bg-secondary);
}

.timeline-item:nth-child(even)::before {
    left: calc(-8px - var(--spacing-8));
}

.timeline-item:nth-child(odd)::before {
    right: calc(-8px - var(--spacing-8));
}

.timeline-content {
    background: var(--color-bg-secondary);
    padding: var(--spacing-6);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    /* Анимация для homepage */
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.timeline-content.animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline-date {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-600);
    margin-bottom: var(--spacing-2);
}

/*
===========================================
12. АККОРДЕОН
===========================================
*/
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    background-color: var(--color-bg-secondary);
    margin-bottom: var(--spacing-4);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-neutral-200);
    transition: all 0.3s ease;
}

.accordion-item:hover {
    box-shadow: var(--shadow-md);
}

.accordion-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    cursor: pointer;
    transition: all 0.3s ease;
}

.accordion-header:hover {
    background-color: var(--color-neutral-50);
}

.accordion-number {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    min-width: 32px;
}

.accordion-title {
    flex: 1;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content.active {
    max-height: 500px;
}

.accordion-body {
    padding: 0 var(--spacing-6) var(--spacing-6);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* FAQ Styles */
.faq-section {
    max-width: 1000px;
    margin: 0 auto;
}

.faq-question {
    background: white;
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    border-color: var(--color-primary-300);
    box-shadow: var(--shadow-lg);
}

.faq-question.active {
    border-color: var(--color-primary-500);
    box-shadow: var(--shadow-xl);
}

.faq-question h3 {
    margin: 0;
    padding: var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: color 0.3s ease;
}

.faq-question.active h3 {
    color: var(--color-primary-600);
}

.faq-icon {
    color: var(--color-primary-500);
    font-size: var(--font-size-lg);
    transition: transform 0.3s ease;
    font-weight: bold;
}

.faq-question.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    background: var(--color-neutral-50);
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--spacing-6);
}

.faq-answer.active {
    max-height: 1000px;
    padding: var(--spacing-6);
    border-top: 1px solid var(--color-neutral-200);
}

.faq-answer p {
    margin: 0 0 var(--spacing-4) 0;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.faq-answer p:last-child {
    margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
    margin: var(--spacing-4) 0;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.faq-answer li {
    margin-bottom: var(--spacing-2);
}

/*
===========================================
13. BREADCRUMBS
===========================================
*/
.breadcrumbs {
    background: var(--color-neutral-50);
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--color-neutral-200);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
}

.breadcrumb-item {
    color: var(--color-text-secondary);
}

.breadcrumb-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-link:hover {
    color: var(--color-text-primary);
}

.breadcrumb-current {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

/*
===========================================
14. STATUS BADGE (для activities.html)
===========================================
*/
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-primary-100);
    color: var(--color-primary-700);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-4);
}

.status-badge.active {
    background: var(--color-primary-500);
    color: var(--color-text-primary);
}

.status-badge.planned {
    background: var(--color-neutral-200);
    color: var(--color-text-secondary);
}

/*
===========================================
15. JOB CARD (для careers.html)
===========================================
*/
.job-card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-neutral-200);
    transition: all 0.3s ease;
    margin-bottom: var(--spacing-8);
}

.job-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.job-card h3 {
    border-bottom: 2px solid var(--color-primary-500);
    padding-bottom: var(--spacing-3);
    margin-bottom: var(--spacing-6);
}

.job-section {
    margin-bottom: var(--spacing-6);
}

.job-section h4 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-lg);
}

.job-section ul {
    color: var(--color-text-secondary);
    margin-left: var(--spacing-6);
    font-size: var(--font-size-sm);
}

.job-section ul li {
    margin-bottom: var(--spacing-2);
}

/*
===========================================
16. CONTACT CARD (для contacts.html)
===========================================
*/
.contact-card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-3xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-neutral-200);
    transition: all 0.3s ease;
    text-align: center;
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary-100);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-6);
    font-size: 32px;
    color: var(--color-primary-600);
}

.contact-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
    color: var(--color-text-primary);
}

.contact-info {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-6);
}

.contact-link {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--color-primary-700);
    text-decoration: underline;
}

/*
===========================================
17. ФОРМЫ
===========================================
*/
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background: var(--color-bg-secondary);
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form-textarea {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background: var(--color-bg-secondary);
    transition: all 0.3s ease;
    min-height: 120px;
    resize: vertical;
    font-family: var(--font-sans);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form-select {
    width: 100%;
    padding: var(--spacing-4);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background: var(--color-bg-secondary);
    transition: all 0.3s ease;
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.1);
}

.form-checkbox {
    margin-right: var(--spacing-3);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.required {
    color: #dc2626;
}

/*
===========================================
18. GLOSSARY STYLES
===========================================
*/

/* Glossary Navigation */
.glossary-nav {
    background: var(--color-bg-secondary);
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--color-neutral-200);
    position: sticky;
    top: 72px;
    z-index: 40;
    backdrop-filter: blur(8px);
    background-color: rgba(248, 250, 252, 0.95);
}

.alphabet-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.alphabet-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    position: relative;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-neutral-200);
    box-shadow: var(--shadow-sm);
}

.alphabet-link:hover {
    color: var(--color-text-primary);
    background: var(--color-primary-50);
    border-color: var(--color-primary-300);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.alphabet-link:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Search Section */
.search-container {
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.search-box {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6) var(--spacing-4) var(--spacing-12);
    border: 2px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-lg);
    background: var(--color-bg-primary);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.search-container::before {
    content: '🔍';
    position: absolute;
    left: var(--spacing-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.search-box:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1), var(--shadow-md);
    background: var(--color-bg-secondary);
}

.search-box::placeholder {
    color: var(--color-text-tertiary);
    font-style: italic;
}

/* Term Cards */
.term-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    margin-bottom: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.term-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--color-primary-300);
}

.term-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary-500), var(--color-accent-500));
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: bottom;
}

.term-card:hover::before {
    transform: scaleY(1);
}

.term-title {
    font-family: var(--font-serif);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
    line-height: var(--line-height-tight);
}

.term-english {
    font-size: var(--font-size-base);
    color: var(--color-text-tertiary);
    font-style: italic;
    margin-bottom: var(--spacing-4);
    background: var(--color-primary-50);
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-primary-200);
}

.term-definition {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

/* Abbreviations Grid */
.abbr-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
}

.abbr-item {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.abbr-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-accent-300);
}

.abbr-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-500), var(--color-primary-500));
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}

.abbr-item:hover::before {
    transform: scaleX(1);
}

.abbr-term {
    font-family: var(--font-sans);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
    background: var(--color-accent-50);
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-accent-200);
}

.abbr-definition {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

/*
===========================================
19. ДОПОЛНИТЕЛЬНЫЕ КОМПОНЕНТЫ
===========================================
*/

/* Steps для registration.html */
.steps-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-16);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.step:not(:last-child)::after {
    content: '→';
    margin-left: var(--spacing-4);
    color: var(--color-text-secondary);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-primary-500);
    color: var(--color-text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

.step-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Benefits Grid для registration.html */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-16);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.benefit-content h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
}

.benefit-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* Location Info для contacts.html */
.location-info {
    background: var(--color-neutral-50);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-neutral-200);
    margin-bottom: var(--spacing-8);
}

.working-hours {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

.hours-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-neutral-200);
}

.hours-item:last-child {
    border-bottom: none;
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
}

.social-link {
    width: 48px;
    height: 48px;
    background: var(--color-primary-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    color: var(--color-primary-600);
    font-weight: var(--font-weight-bold);
}

.social-link:hover {
    background: var(--color-primary-200);
    transform: translateY(-2px);
}

/*
===========================================
20. RESPONSIVE DESIGN
===========================================
*/
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-5);
    }
    
    h1 {
        font-size: var(--font-size-4xl);
    }
    
    h2 {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        max-width: 100%;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .stats-container {
        gap: var(--spacing-12);
        flex-direction: column;
    }
    
    .stats-value {
        font-size: var(--font-size-5xl);
    }
    
    .btn {
        padding: var(--spacing-4) var(--spacing-6);
        font-size: var(--font-size-sm);
    }
    
    .card-feature {
        padding: var(--spacing-6);
    }
    
    /* Mobile Timeline */
    .timeline::before {
        left: var(--spacing-4);
    }
    
    .timeline-item {
        width: 100%;
        margin-left: 0;
        padding-left: var(--spacing-12);
        padding-right: 0;
        text-align: left;
    }
    
    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: var(--spacing-12);
        padding-right: 0;
    }
    
    .timeline-item::before {
        left: calc(var(--spacing-4) - 8px);
    }
    
    .timeline-item:nth-child(odd)::before {
        left: calc(var(--spacing-4) - 8px);
        right: auto;
    }
    
    /* Navigation Mobile Fixes - 2 Row Layout */
    .nav-header {
        padding: var(--spacing-3) 0;
        min-height: auto;
        overflow: visible;
    }
    
    .nav-header .container {
        max-width: 100%;
        padding: 0 var(--spacing-4);
    }
    
    .nav-main-container {
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: var(--spacing-3);
        width: 100%;
    }
    
    .nav-logo {
        order: 1;
        margin-bottom: 0;
        width: 100%;
        text-align: center;
        font-size: var(--font-size-lg);
    }
    
    .nav-menu {
        order: 2;
        flex-direction: row !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        width: 100%;
        gap: var(--spacing-2) !important;
        align-items: center !important;
        max-width: 100%;
    }
    
    .nav-link {
        font-size: var(--font-size-xs);
        padding: var(--spacing-1) var(--spacing-2);
        text-align: center;
        min-width: auto;
        white-space: nowrap;
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
        flex-shrink: 0;
    }
    
    .nav-link:hover {
        background-color: var(--color-neutral-100);
    }
    
    .nav-menu .btn {
        padding: 4px 8px !important;
        font-size: var(--font-size-xs) !important;
        min-width: auto !important;
        min-height: auto !important;
        height: auto !important;
        white-space: nowrap;
        margin: 0 !important;
        display: inline-block !important;
        text-align: center;
        flex-shrink: 0;
        border-radius: 4px !important;
        line-height: 1.2 !important;
        font-weight: var(--font-weight-medium) !important;
    }
    
    .nav-menu .btn-primary {
        background-color: var(--color-primary-500) !important;
        color: white !important;
        border: none !important;
        box-shadow: none !important;
        transform: none !important;
    }
    
    .nav-menu .btn-primary:hover {
        background-color: var(--color-primary-600) !important;
        transform: none !important;
        box-shadow: none !important;
    }
    
    /* Mobile специфичные стили */
    .contact-card {
        padding: var(--spacing-6);
    }
    
    .contact-icon {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }
    
    .steps-container {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-4);
    }
    
    .step:not(:last-child)::after {
        content: '↓';
        margin-left: 0;
        margin-top: var(--spacing-2);
    }
}

@media (max-width: 640px) {
    .section {
        padding: var(--spacing-20) 0;
    }
    
    .hero {
        min-height: 40vh;
    }
}

/*
===========================================
НЕДОСТАЮЩИЕ КОМПОНЕНТЫ
===========================================
*/

/* Breadcrumbs */
.breadcrumbs {
    background: var(--color-neutral-50);
    padding: var(--spacing-2) 0;
    border-bottom: 1px solid var(--color-neutral-200);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumb-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.breadcrumb-link:hover {
    color: var(--color-text-primary);
}

.breadcrumb-item {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.breadcrumb-current {
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

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

/* Benefits Components */
.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-neutral-200);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-base);
}

.benefit-icon {
    font-size: var(--font-size-3xl);
    flex-shrink: 0;
}

.benefit-content h4 {
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.benefit-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    margin: 0;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-6);
}

/* Steps Components */
.steps-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-8);
    flex-wrap: wrap;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--color-primary-500);
    color: var(--color-text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: var(--font-size-lg);
}

.step-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Form Components */
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.required {
    color: #dc2626;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--color-neutral-300);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    cursor: pointer;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.form-checkbox {
    width: auto;
    margin: 0;
    margin-top: 2px;
    flex-shrink: 0;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    margin-bottom: var(--spacing-4);
}

.status-badge.active {
    background: #dcfce7;
    color: #166534;
}

.status-badge.planned {
    background: #fef3c7;
    color: #92400e;
}

/*
===========================================
15. FOOTER СТИЛИ
===========================================
*/

/* Enhanced Footer Links */
.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
    position: relative;
    padding: var(--spacing-2) var(--spacing-1);
    border-radius: var(--radius-base);
    display: inline-block;
}

.footer-link:hover {
    color: var(--color-primary-600);
    background: var(--color-primary-50);
    transform: translateX(3px);
    padding-left: var(--spacing-3);
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary-500);
    transition: width 0.3s ease;
}

.footer-link:hover::after {
    width: 100%;
}

.footer-link:hover::before {
    content: '→';
    position: absolute;
    left: -16px;
    color: var(--color-primary-500);
    opacity: 1;
    transform: translateX(0);
    animation: slideIn 0.3s ease;
}

.footer-link::before {
    content: '→';
    position: absolute;
    left: -16px;
    color: var(--color-primary-500);
    opacity: 0;
    transform: translateX(-8px);
    transition: all 0.3s ease;
}

@keyframes slideIn {
    0% {
        opacity: 0;
        transform: translateX(-8px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Footer CTA Button */
.footer-cta-btn {
    display: inline-block;
    padding: var(--spacing-3) var(--spacing-6);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-neutral-300);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.footer-cta-btn:hover {
    border-color: var(--color-primary-500);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background: linear-gradient(45deg, var(--color-bg-secondary) 0%, var(--color-primary-50) 100%);
}

.footer-cta-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Enhanced Social Links */
.social-link {
    width: 32px;
    height: 32px;
    background: var(--color-neutral-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    border: 1px solid var(--color-neutral-200);
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.social-link:hover::before {
    left: 100%;
}

.social-link:hover {
    background: var(--color-neutral-200);
    border-color: var(--color-primary-300);
    transform: translateY(-3px) scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.social-link:active {
    transform: translateY(-1px) scale(1.05) rotate(2deg);
    transition: all 0.1s ease;
}

.social-link-primary {
    background: var(--color-primary-500);
    border-color: var(--color-primary-600);
    color: var(--color-text-inverse);
}

.social-link-primary:hover {
    background: var(--color-primary-600);
    border-color: var(--color-primary-700);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
    transform: translateY(-3px) scale(1.1) rotate(-5deg);
}

.social-link-primary::before {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

/* Enhanced Navigation Hover Effects */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary-500);
    transition: width 0.3s ease;
}

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

/* Mobile Responsive Styles */
@media (max-width: 1024px) {
    /* Tablet Navigation */
    .nav-menu {
        gap: var(--spacing-4);
        flex-wrap: wrap;
    }
    
    .nav-link {
        font-size: var(--font-size-sm);
        padding: var(--spacing-2) var(--spacing-3);
    }
    
    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
    
    .alphabet-nav {
        gap: var(--spacing-4);
    }
    
    .alphabet-link {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-sm);
    }
    
    .abbr-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-4);
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation Override */
    .nav-header .container > div[style] {
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        align-items: center !important;
        gap: var(--spacing-4) !important;
    }
    
    .nav-header .container > div:last-child[style] {
        display: flex !important;
        flex-direction: column !important;
        gap: var(--spacing-3) !important;
        align-items: center !important;
    }
    
    /* Footer Mobile Fixes */
    footer {
        padding: var(--spacing-12) 0 var(--spacing-8) 0 !important;
    }
    
    footer .container > div:first-child {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-8) !important;
        text-align: center;
    }
    
    footer .container > div:first-child > div {
        max-width: none !important;
    }
    
    footer .container > div:first-child > div:first-child {
        order: 1;
        margin-bottom: var(--spacing-4);
    }
    
    footer .container > div:first-child > div:nth-child(2) {
        order: 2;
    }
    
    footer .container > div:first-child > div:nth-child(3) {
        order: 3;
    }
    
    footer .container > div:first-child > div:nth-child(4) {
        order: 4;
    }
    
    footer .container > div:last-child {
        flex-direction: column !important;
        gap: var(--spacing-4) !important;
        text-align: center;
    }
    
    footer .container > div:last-child > div:first-child {
        justify-content: center;
    }
    
    footer .container > div:last-child > div:last-child {
        text-align: center !important;
    }
    
    .footer-link::before {
        display: none;
    }
    
    .footer-link:hover {
        transform: scale(1.05);
        padding-left: var(--spacing-1);
    }
    
    .social-link:hover {
        transform: translateY(-2px) scale(1.05);
    }
    
    /* Glossary Mobile */
    .glossary-nav {
        position: static;
    }
    
    .alphabet-nav {
        gap: var(--spacing-2);
        justify-content: flex-start;
        overflow-x: auto;
        padding: var(--spacing-2) 0;
    }
    
    .alphabet-link {
        flex-shrink: 0;
        padding: var(--spacing-2);
        font-size: var(--font-size-xs);
        min-width: 44px;
        text-align: center;
    }
    
    .search-container::before {
        left: var(--spacing-3);
    }
    
    .search-box {
        padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-10);
        font-size: var(--font-size-base);
    }
    
    .term-card {
        padding: var(--spacing-6);
        margin-bottom: var(--spacing-4);
    }
    
    .term-title {
        font-size: var(--font-size-lg);
    }
    
    .term-definition {
        font-size: var(--font-size-sm);
    }
    
    .abbr-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
    
    .abbr-item {
        padding: var(--spacing-4);
    }
    
    .abbr-term {
        font-size: var(--font-size-base);
        padding: var(--spacing-1) var(--spacing-3);
    }
    
    .abbr-definition {
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    /* Extra Small Mobile Navigation */
    .nav-header {
        padding: var(--spacing-3) 0;
    }
    
    .nav-header .container > div {
        gap: var(--spacing-4);
    }
    
    .nav-header .container > div:first-child {
        font-size: var(--font-size-lg);
    }
    
    .nav-menu {
        gap: var(--spacing-1) !important;
    }
    
    .nav-link {
        font-size: var(--font-size-xs);
        padding: var(--spacing-1);
        min-width: auto;
    }
    
    .nav-menu .btn {
        padding: 2px 6px !important;
        font-size: var(--font-size-xs) !important;
        margin: 0 !important;
        border-radius: 3px !important;
        height: auto !important;
        min-height: auto !important;
        line-height: 1.1 !important;
        font-weight: var(--font-weight-medium) !important;
    }
    
    /* Extra Small Mobile Footer */
    footer {
        padding: var(--spacing-8) 0 var(--spacing-6) 0 !important;
    }
    
    footer .container > div:first-child {
        gap: var(--spacing-6) !important;
    }
    
    footer .container > div:first-child h4 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-3);
    }
    
    footer .container > div:first-child p {
        font-size: var(--font-size-sm);
    }
    
    .search-container {
        margin-bottom: var(--spacing-6);
    }
    
    .search-box {
        padding: var(--spacing-3) var(--spacing-3) var(--spacing-3) var(--spacing-8);
    }
    
    .search-container::before {
        left: var(--spacing-2);
        font-size: var(--font-size-base);
    }
    
    .term-card {
        padding: var(--spacing-4);
        border-radius: var(--radius-xl);
    }
    
    .abbr-item {
        padding: var(--spacing-3);
        border-radius: var(--radius-lg);
    }
    
    .social-link {
        width: 40px;
        height: 40px;
    }
    
    .social-link:hover {
        transform: translateY(-1px) scale(1.02);
    }
}

/*
===========================================
16. ФОРМА И ОШИБКИ
===========================================
*/

/* Form Error Styles */
.form-error {
    color: #ef4444;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-2);
    display: block;
    font-weight: var(--font-weight-medium);
}

.form-group.has-error .form-input,
.form-group.has-error .form-select,
.form-group.has-error .form-textarea {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Success States */
.form-group.has-success .form-input,
.form-group.has-success .form-select,
.form-group.has-success .form-textarea {
    border-color: var(--color-success-500);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

/* Loading State for Submit Button */
.btn-loading {
    position: relative;
    color: transparent;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid #ffffff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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