:root {
    /*
     * Главная настройка внешнего вида сайта.
     * Цвета меняются здесь. Шрифты меняются в --font-main / --font-headline
     * и в подключении Google Fonts в core/templates/base.html.
     */
    /* Цветовая палитра из stitch_/DESIGN.md */
    --background-color: #353839;
    --surface-lowest: #1f2123;
    --surface-low: #292c2e;
    --surface-color: #303335;
    --surface-high: #3b3f42;
    --surface-highest: #464b4f;
    --primary-color: #d4d3cf;
    --primary-hover: #f0efeb;
    --primary-dim: #aaa9a5;
    --text-color: #e5e4e2;
    --text-muted-color: #bebdb9;
    --text-soft-color: #d4d3cf;
    --on-primary-color: #1e2022;
    --outline-color: rgba(229, 228, 226, 0.18);
    --outline-strong-color: rgba(229, 228, 226, 0.34);
    --error-color: #ee7d77;
    --surface-gradient: linear-gradient(145deg, rgba(70, 75, 79, 0.82) 0%, rgba(48, 51, 53, 0.96) 48%, rgba(31, 33, 35, 0.98) 100%);
    --metal-gradient: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 42%, var(--primary-dim) 100%);
    --glass-highlight: inset 0 1px 0 rgba(229, 228, 226, 0.14), 0 18px 54px rgba(0, 0, 0, 0.28);
    --headline-glow: 0 0 18px rgba(229, 228, 226, 0.16);
    --link-glow: 0 0 14px rgba(229, 228, 226, 0.18);
    --bg-color: var(--background-color);
    --link-color: var(--primary-color);
    
    /* Шрифты */
    --font-main: 'Manrope', 'Inter', system-ui, -apple-system, sans-serif;
    --font-headline: 'Montserrat', 'Manrope', system-ui, -apple-system, sans-serif;
    
    /* Отступы и скругления */
    --border-radius: 8px;
}

body {
    background:
        linear-gradient(115deg, rgba(240, 239, 235, 0.075) 0%, transparent 28%),
        linear-gradient(245deg, rgba(212, 211, 207, 0.055) 0%, transparent 32%),
        linear-gradient(180deg, var(--background-color) 0%, var(--surface-low) 100%);
    background-attachment: fixed; /* Фон стоит на месте при прокрутке */
    margin: 0;
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased; /* Сглаживание шрифтов на Mac */
    min-height: 100vh;
    position: relative;
    isolation: isolate;
}

body::before {
    content: "";
    position: fixed;
    inset: -12vh -8vw;
    z-index: 0;
    pointer-events: none;
    background:
        linear-gradient(130deg, transparent 0%, rgba(240, 239, 235, 0.1) 28%, transparent 46%),
        linear-gradient(25deg, transparent 10%, rgba(31, 33, 35, 0.34) 56%, transparent 100%);
    filter: blur(52px);
    opacity: 0.72;
}

body > nav,
body > .container,
body > footer,
body > .cookie-banner {
    position: relative;
    z-index: 1;
}

/* Ссылки */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
    text-shadow: var(--link-glow);
}

/* Заголовки */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
    letter-spacing: 0;
}

h1,
h2,
.display-1,
.display-2,
.display-3,
.display-4,
.display-5 {
    text-shadow: var(--headline-glow);
}

h3,
h4,
.card-title,
.page-block__title,
.program-block h3 {
    text-shadow: 0 0 12px rgba(229, 228, 226, 0.1);
}

/* Контейнеры */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px; /* Немного уже, чем 1480px, для лучшей читаемости */
    }
}

/* Карточки и блоки контента */
.content-card {
    background: var(--surface-gradient);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid var(--outline-color);
    box-shadow: var(--glass-highlight);
    margin-bottom: 2rem;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.content-card:hover {
    border-color: var(--outline-strong-color);
    box-shadow: inset 0 1px 0 rgba(229, 228, 226, 0.2), 0 24px 64px rgba(0, 0, 0, 0.34);
    transform: translateY(-2px);
}

/* Навигация */
.navbar {
    background:
        linear-gradient(180deg, rgba(70, 75, 79, 0.9) 0%, rgba(53, 56, 57, 0.94) 100%) !important;
    backdrop-filter: blur(18px);
    box-shadow: inset 0 -1px 0 rgba(229, 228, 226, 0.12), 0 12px 36px rgba(0, 0, 0, 0.24);
}

.navbar-brand img {
    filter: grayscale(1) brightness(0) invert(1);
    opacity: 0.94;
}

.navbar-brand .text-primary {
    background: var(--metal-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent !important;
}

.nav-link {
    font-weight: 500;
    color: var(--text-soft-color) !important;
}
.nav-link:hover {
    color: var(--primary-hover) !important;
}
.nav-link.active {
    color: var(--primary-hover) !important;
    font-weight: 600;
}

/* Кнопки */
.btn-primary {
    background: var(--metal-gradient);
    border-color: var(--primary-color);
    color: var(--on-primary-color);
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 10px 28px rgba(229, 228, 226, 0.16);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 56%, var(--primary-dim) 100%);
    border-color: var(--primary-hover);
    color: var(--on-primary-color);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.48), 0 14px 36px rgba(229, 228, 226, 0.22);
}

/* Улучшение читаемости контента */
.content,
.markdown-content,
.program-page,
.program-block {
    color: var(--text-color);
    font-family: var(--font-main);
}

.content h1,
.content h2,
.content h3,
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.program-page h1,
.program-page h2,
.program-page h3,
.program-block h2,
.program-block h3 {
    font-family: var(--font-headline);
    color: var(--text-color);
}

.content p,
.content li,
.markdown-content p,
.markdown-content li,
.program-page p,
.program-page li,
.program-block p,
.program-block li {
    color: var(--text-color);
}

.content h1 { font-size: 2.5rem; margin-top: 2rem; letter-spacing: 0; }
.content h2 { font-size: 2rem; margin-top: 2.5rem; letter-spacing: 0; border-bottom: 2px solid var(--outline-color); padding-bottom: 0.5rem; }
.content h3 { font-size: 1.5rem; margin-top: 2rem; }
.content p { margin-bottom: 1.25rem; font-size: 1.05rem; }
.content ul, .content ol { padding-left: 1.5rem; margin-bottom: 1.5rem; }
.content li { margin-bottom: 0.5rem; }
.content img { max-width: 100%; height: auto; border-radius: var(--border-radius); margin: 1.5rem 0; box-shadow: 0 4px 12px rgba(229, 228, 226, 0.08); }

.markdown-content img,
.program-block img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(229, 228, 226, 0.08);
}

/* Markdown элементы */
.content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    background: var(--surface-high);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
    margin: 1.5rem 0;
}
.content pre {
    background-color: var(--surface-lowest);
    color: var(--text-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
}
.content code {
    background-color: var(--surface-highest);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--primary-hover);
}

/* Footer */
footer {
    background-color: var(--surface-lowest) !important;
    border-top: 1px solid var(--outline-color) !important;
}

/* Утилиты */
.custom-color { color: var(--primary-color); }
.text-muted { color: var(--text-muted-color) !important; }

.text-primary { color: var(--primary-color) !important; }
.bg-white,
.bg-light {
    background-color: var(--surface-color) !important;
}
.border,
.border-top,
.border-bottom {
    border-color: var(--outline-color) !important;
}
.shadow,
.shadow-sm {
    box-shadow: var(--glass-highlight) !important;
}
.card,
.dropdown-menu,
.alert {
    background: var(--surface-gradient);
    border-color: var(--outline-color);
    color: var(--text-color);
    box-shadow: var(--glass-highlight);
}
.card {
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    border-color: var(--outline-strong-color);
    box-shadow: inset 0 1px 0 rgba(229, 228, 226, 0.2), 0 24px 64px rgba(0, 0, 0, 0.34);
    transform: translateY(-2px);
}
.card-title,
.card-text,
.dropdown-item,
.alert h1,
.alert h2,
.alert h3,
.alert h4,
.alert h5,
.alert h6,
.alert p {
    color: var(--text-color);
}
.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--surface-highest);
    color: var(--primary-hover);
}
.btn-outline-primary,
.btn-outline-secondary {
    color: var(--primary-color);
    border-color: var(--outline-strong-color);
}
.btn-outline-primary:hover,
.btn-outline-secondary:hover {
    background-color: var(--surface-highest);
    border-color: var(--primary-color);
    color: var(--primary-hover);
}
.btn-success {
    background: var(--metal-gradient);
    border-color: var(--primary-color);
    color: var(--on-primary-color);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4), 0 10px 28px rgba(229, 228, 226, 0.16);
}
.btn-success:hover {
    border-color: var(--primary-hover);
    color: var(--on-primary-color);
}
.badge.bg-primary {
    background-color: var(--surface-highest) !important;
    color: var(--primary-hover);
}
.alert-info {
    background-color: var(--surface-high);
    border-color: var(--outline-color);
    color: var(--text-color);
}
.navbar-brand,
.navbar-brand:hover,
.navbar-brand:focus {
    color: var(--primary-color);
}
.navbar-light .navbar-toggler {
    border-color: var(--outline-color);
}
.navbar-light .navbar-toggler-icon {
    filter: invert(92%) sepia(8%) saturate(178%) hue-rotate(177deg) brightness(91%) contrast(88%);
}

/* Sticky footer fix */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
footer {
    margin-top: auto;
}