/* Тёмная тема - Общие стили */
:root {
    --primary-color: #6c8eff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --dark-color: #1a1a1a;
    --light-color: #2d2d2d;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --border-color: #333333;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-color);
    padding-top: 76px; /* Отступ для фиксированной навигации */
    min-height: 100vh;
}

/* Навигация */
.navbar {
    background-color: var(--dark-color) !important;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
    color: var(--text-color) !important;
}

.nav-link {
    color: var(--text-color) !important;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Hero секция */
.hero-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.3;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-image {
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Анимации */
.animate-fade-in {
    animation: fadeIn 1s ease-in;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-in 0.3s both;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-in 0.6s both;
}

.animate-slide-in {
    animation: slideInRight 1s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Карточки кейсов */
.case-card {
    transition: all 0.3s ease;
    border: none;
    background-color: var(--card-bg);
    color: var(--text-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    height: 100%;
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(108, 142, 255, 0.3);
    border-color: var(--primary-color);
}

.case-icon {
    text-align: center;
    transition: transform 0.3s ease;
}

.case-card:hover .case-icon {
    transform: scale(1.1);
}

.case-card .card-text {
    color: var(--text-muted);
}

/* Кнопки */
.btn {
    transition: all 0.3s ease;
    border-radius: 8px;
    font-weight: 500;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
}

.btn-primary {
    background: linear-gradient(135deg, #6c8eff 0%, #5a7fff 100%);
    border: none;
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a7fff 0%, #6c8eff 100%);
    color: white;
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.btn-outline-secondary {
    border-color: var(--text-muted);
    color: var(--text-muted);
}

.btn-outline-secondary:hover {
    background-color: var(--text-muted);
    border-color: var(--text-muted);
    color: var(--bg-color);
}

.btn-light {
    background-color: var(--text-color);
    color: var(--bg-color);
    border: none;
}

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

/* Формы */
.form-control,
.form-select {
    border-radius: 8px;
    border: 2px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    transition: all 0.3s ease;
    padding: 12px 15px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    box-shadow: 0 0 0 0.2rem rgba(108, 142, 255, 0.25);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

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

/* Карточки */
.card {
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.7);
}

.card-body {
    color: var(--text-color);
}

.card-title {
    color: var(--text-color);
}

/* Секции */
.bg-light {
    background-color: var(--light-color) !important;
}

section {
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Футер */
footer {
    margin-top: auto;
    background-color: var(--dark-color) !important;
    border-top: 1px solid var(--border-color);
}

footer a {
    transition: color 0.3s ease;
    color: var(--text-color);
}

footer a:hover {
    color: var(--primary-color) !important;
}

footer h5 {
    color: var(--text-color);
}

footer p {
    color: var(--text-muted);
}

/* Адаптивность */
@media (max-width: 768px) {
    body {
        padding-top: 56px;
    }
    
    .hero-section {
        padding: 60px 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .case-card {
        margin-bottom: 20px;
    }
}

/* Хлебные крошки */
.breadcrumb {
    background-color: transparent;
    padding: 0;
}

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

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

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-item a:hover {
    color: #8ba3ff;
}

/* Алерты */
.alert {
    border-radius: 8px;
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.2);
    border: 1px solid rgba(40, 167, 69, 0.5);
    color: #28a745;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.2);
    border: 1px solid rgba(220, 53, 69, 0.5);
    color: #dc3545;
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.2);
    border: 1px solid rgba(255, 193, 7, 0.5);
    color: #ffc107;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.2);
    border: 1px solid rgba(23, 162, 184, 0.5);
    color: #17a2b8;
}

/* Таблицы */
.table {
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.table thead {
    background-color: var(--dark-color);
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.table tbody {
    background-color: var(--card-bg);
}

.table td,
.table th {
    border-color: var(--border-color);
    color: var(--text-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(108, 142, 255, 0.1);
}

.table-warning {
    background-color: rgba(255, 193, 7, 0.15) !important;
}

/* Утилиты */
.shadow-sm {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5) !important;
}

.min-vh-100 {
    min-height: 100vh;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-light {
    color: var(--text-color) !important;
}

/* Описание кейса */
.case-description {
    line-height: 1.8;
    color: var(--text-color);
}

.case-description h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.case-description p {
    color: var(--text-color);
}

.case-description ul {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.case-description li {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

/* Админ-панель */
.bg-light {
    background-color: var(--bg-color) !important;
}

/* Анимация загрузки */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Кастомный скроллбар */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #5a7fff;
}

/* Дополнительные стили для тёмной темы */
.lead {
    color: var(--text-muted);
}

.display-1,
.display-2,
.display-3,
.display-4,
.display-5,
.display-6 {
    color: var(--text-color);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color);
}

/* Badge */
.badge {
    border: 1px solid transparent;
}

.badge.bg-success {
    background-color: rgba(40, 167, 69, 0.2) !important;
    color: #28a745 !important;
    border-color: rgba(40, 167, 69, 0.5);
}

.badge.bg-warning {
    background-color: rgba(255, 193, 7, 0.2) !important;
    color: #ffc107 !important;
    border-color: rgba(255, 193, 7, 0.5);
}

/* Инвалидные поля формы */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--danger-color);
    background-color: rgba(220, 53, 69, 0.1);
}

.invalid-feedback {
    color: var(--danger-color);
}

/* ==========================
   Виджет чат-бота
   ========================== */
.chat-launcher {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #6c8eff 0%, #5a7fff 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    cursor: pointer;
    z-index: 1050;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.chat-launcher:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.8);
    background: linear-gradient(135deg, #5a7fff 0%, #6c8eff 100%);
}

.chat-widget {
    position: fixed;
    right: 24px;
    bottom: 96px;
    width: 360px;
    max-width: 95vw;
    height: 520px;
    max-height: 80vh;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 1050;
    border: 1px solid var(--border-color);
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.chat-widget.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    border-bottom: 1px solid var(--border-color);
}

.chat-title {
    font-weight: 600;
    color: #ffffff;
}

.chat-subtitle {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.chat-close-btn {
    border: none;
    background: transparent;
    color: #ffffff;
    font-size: 1rem;
    cursor: pointer;
}

.chat-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 8px 12px;
    background-color: var(--bg-color);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding-right: 4px;
}

.chat-message {
    display: flex;
    margin-bottom: 8px;
}

.chat-message.bot {
    justify-content: flex-start;
}

.chat-message.user {
    justify-content: flex-end;
}

.chat-bubble {
    max-width: 85%;
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.4;
    word-wrap: break-word;
}

.chat-message.bot .chat-bubble {
    background-color: #1f2937;
    color: #e5e7eb;
    border-bottom-left-radius: 4px;
}

.chat-message.user .chat-bubble {
    background: linear-gradient(135deg, #6c8eff 0%, #5a7fff 100%);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.chat-typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
}

.chat-typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
    animation: chat-typing 1s infinite ease-in-out;
}

.chat-typing-indicator span:nth-child(2) {
    animation-delay: 0.15s;
}

.chat-typing-indicator span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes chat-typing {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.4;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.chat-footer {
    display: flex;
    align-items: center;
    padding: 8px;
    border-top: 1px solid var(--border-color);
    background-color: var(--card-bg);
}

.chat-input {
    flex: 1;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 8px 12px;
    font-size: 0.9rem;
    outline: none;
}

.chat-input::placeholder {
    color: var(--text-muted);
}

.chat-send-btn {
    border: none;
    background: transparent;
    color: var(--primary-color);
    margin-left: 8px;
    font-size: 1.2rem;
    cursor: pointer;
}

@media (max-width: 576px) {
    .chat-widget {
        right: 12px;
        bottom: 84px;
        width: calc(100vw - 24px);
        height: 70vh;
    }
    .chat-launcher {
        right: 16px;
        bottom: 16px;
    }
}