/* RESET & БАЗОВЫЕ НАСТРОЙКИ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* СВЕТЛАЯ ТЕМА */
    --bg-body-light-start: #e8e8e8;
    --bg-body-light-end: #ffffff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 20px 30px -12px rgba(0, 0, 0, 0.2);
    --link-gpx: #22c55e;
    --link-gpx-hover: #16a34a;
    --link-garmin: #f39c12;
    --link-garmin-hover: #e67e22;
    --link-strava: #fc6a2a;
    --link-strava-hover: #fc4c02;
    --link-vk: #3b8eff;
    --link-vk-hover: #0077ff;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    /* ТЁМНАЯ ТЕМА */
    --bg-body-start: #121212;
    --bg-body-end: #1e1e2a;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --accent: #60a5fa;
    --accent-hover: #3b82f6;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 20px 30px -12px rgba(0, 0, 0, 0.5);
}

body {
    background: linear-gradient(135deg, var(--bg-body-start) 0%, var(--bg-body-end) 100%);
    color: var(--text-primary);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    padding: 0 1rem;
    min-height: 100vh;
}

/* Контейнер */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Заголовки */
.main-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

/* Сетка карточек — адаптивная */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

/* Карточка */
.card {
    background: var(--bg-card);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(2px);
    display: flex;
    flex-direction: column;
    scroll-margin-top: 100px;
}

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

.card-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    background-color: #2d3748;
    transition: transform 0.5s ease;
}

.card:hover .card-image {
    transform: scale(1.02);
}

.card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    flex: 1;
}

.distance {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 15%, transparent);
    padding: 0.25rem 0.75rem;
    border-radius: 40px;
    display: inline-block;
    width: fit-content;
    margin: 0.5rem 0;
}

.coauthor {
    font-size: 0.85rem;
    color: var(--text-muted);
    background: color-mix(in srgb, var(--text-muted) 10%, transparent);
    padding: 0.25rem 0.75rem;
    border-radius: 40px;
    display: inline-block;
    width: fit-content;
}

.coauthor-value {
    font-weight: 600;
    color: var(--text-primary);
}

.coauthor-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.coauthor-link:hover {
    text-decoration: underline;
}

.route-features, .start-location {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0.25rem 0;
    line-height: 1.4;
}

/* GPX ссылки */
.gpx-links, .external-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.links-label {
    font-weight: 600;
    color: var(--text-muted);
    margin-right: 0.25rem;
    font-size: 0.85rem;
}

.gpx-link {
    background: color-mix(in srgb, var(--link-gpx) 15%, transparent);
    color: var(--link-gpx);
    padding: 0.3rem 0.8rem;
    border-radius: 30px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.gpx-link:hover {
    background: var(--link-gpx);
    color: white;
    border-color: var(--link-gpx);
}

/* Кнопки маршрутов */
.yandex-link, .garmin-link, .strava-link, .vk-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    border-radius: 60px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.8rem;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.yandex-link {
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    color: var(--accent);
}

.yandex-link:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: scale(0.98);
}

.garmin-link {
    background: color-mix(in srgb, var(--link-garmin) 15%, transparent);
    color: var(--link-garmin);
}

.garmin-link:hover {
    background: var(--link-garmin);
    color: white;
    border-color: var(--link-garmin);
    transform: scale(0.98);
}

.strava-link {
    background: color-mix(in srgb, var(--link-strava) 15%, transparent);
    color: var(--link-strava);
}

.strava-link:hover {
    background: var(--link-strava);
    color: white;
    border-color: var(--link-strava);
    transform: scale(0.98);
}

.vk-link {
    background: color-mix(in srgb, var(--link-vk) 15%, transparent);
    color: var(--link-vk);
}

.vk-link:hover {
    background: var(--link-vk);
    color: white;
    border-color: var(--link-vk);
    transform: scale(0.98);
}

/* Футер */
.footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Переключатель темы */
.theme-switcher {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.theme-switcher:hover {
    transform: scale(1.05);
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Адаптивность для мелких смартфонов */
@media (max-width: 640px) {
    body {
        padding: 0 0.75rem;
    }
    .container {
        padding: 1rem 0.5rem;
    }
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .card-content {
        padding: 1.2rem;
    }
    .card-title {
        font-size: 1.3rem;
    }
    .external-links {
        flex-wrap: wrap;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (min-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1440px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}