/* === Variables === */
:root {
    --color-primary: #1a4d7a;
    --color-primary-hover: #0f3554;
    --color-primary-light: #e8f1f8;
    --color-accent: #c9a227;
    --color-accent-hover: #a8841f;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-bg: #f8fafc;
    --color-bg-card: #ffffff;
    --color-border: #e5e7eb;
    --color-footer-bg: #0f172a;
    --color-footer-text: #e2e8f0;
    --color-footer-muted: #94a3b8;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --transition: 0.25s ease;
    --header-height: 72px;
}

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

html {
    scroll-behavior: smooth;
}

html, body {
    max-width: 100vw;
    overflow-x: hidden;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

/* === Header === */
.header {
    background: linear-gradient(90deg, #0f172a, #1e293b 45%, #1a4d7a);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
    width: 100%;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: var(--header-height);
}

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

.logo a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    transition: color var(--transition), opacity var(--transition), transform var(--transition);
    color: #e5e7eb;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo a:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 10px;
    background: #fff;
    box-shadow: var(--shadow-sm);
}

.logo-text {
    white-space: nowrap;
}

@media (max-width: 480px) {
    .logo-text {
        white-space: normal;
        font-size: 1.05rem;
    }
}

.nav {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.nav a {
    color: #e5e7eb;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition), background var(--transition);
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
}

.nav a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.12);
}

.nav a.active {
    color: #0f172a;
    background: #e5e7eb;
}

.admin-link {
    color: #b91c1c !important;
    margin-left: 0.5rem;
}

.admin-link:hover {
    background: #fef2f2 !important;
    color: #991b1b !important;
}

/* Hamburger */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.mobile-menu-toggle:hover {
    background: var(--color-primary-light);
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}

.mobile-menu-toggle.nav-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.nav-open span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.nav-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* === Main === */
main {
    min-height: calc(100vh - 320px);
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    background: var(--color-bg-card);
    box-shadow: var(--shadow-sm);
}

.main-content h1 {
    color: var(--color-primary);
    margin-bottom: 1.75rem;
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* === Filters === */
.filters {
    margin-bottom: 2rem;
}

.filters h3 {
    margin-bottom: 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.55rem 1.25rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    color: var(--color-text);
    cursor: pointer;
    border-radius: 999px;
    transition: all var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.filter-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* === News List === */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.news-item {
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.news-title {
    color: var(--color-primary);
    margin-bottom: 0.35rem;
    font-size: clamp(1.2rem, 2.5vw, 1.45rem);
    font-weight: 700;
    line-height: 1.3;
}

.news-date {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    display: block;
    margin-bottom: 0.85rem;
}

.news-content {
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.news-content p {
    margin: 0.5rem 0;
}

.news-content ul, .news-content ol {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.news-image {
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.news-image img {
    width: 100%;
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.news-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.tag {
    background: var(--color-primary-light);
    color: var(--color-primary);
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 500;
}

.no-news {
    text-align: center;
    color: var(--color-text-muted);
    padding: 3rem 1rem;
    font-size: 1rem;
}

/* === Content Sections (О нас, История и т.д.) === */
.content-section {
    line-height: 1.8;
}

.rich-content {
    line-height: 1.8;
    color: var(--color-text);
}

.rich-content p {
    margin: 1rem 0;
}

.rich-content ul, .rich-content ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.rich-content strong {
    font-weight: 700;
}

.rich-content em {
    font-style: italic;
}

.page-image {
    margin: 2rem 0;
    text-align: center;
}

.page-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.section-block {
    margin: 2rem 0;
}

.section-block h2 {
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

/* === Timeline === */
.timeline {
    margin: 2rem 0;
}

.timeline-item {
    display: flex;
    gap: 1.5rem;
    margin: 1.25rem 0;
    padding: 1rem 0 1rem 1.25rem;
    border-left: 3px solid var(--color-primary);
    padding-left: 1.25rem;
}

.timeline-year {
    font-weight: 700;
    color: var(--color-primary);
    min-width: 70px;
    flex-shrink: 0;
}

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

/* === Documents === */
.documents-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.document-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    gap: 1.25rem;
    transition: box-shadow var(--transition);
}

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

.document-image {
    flex-shrink: 0;
}

.document-image img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.document-info {
    flex: 1;
    min-width: 0;
}

.document-info h3 {
    color: var(--color-primary);
    margin-bottom: 0.35rem;
    font-weight: 700;
}

.document-date {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.document-description {
    margin-top: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.55;
}

.document-link {
    padding: 0.65rem 1.25rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    transition: background var(--transition);
    flex-shrink: 0;
}

.document-link:hover {
    background: var(--color-primary-hover);
}

.document-link-disabled {
    padding: 0.65rem 1.25rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    cursor: default;
    flex-shrink: 0;
}

/* === Footer === */
.footer {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    margin-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 0.75rem;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
}

.footer-section p {
    margin: 0.4rem 0;
    line-height: 1.7;
    font-size: 0.9rem;
    color: var(--color-footer-muted);
}

.footer-section a {
    color: #7dd3fc;
    transition: color var(--transition);
}

.footer-section a:hover {
    color: #38bdf8;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.newsletter-form input {
    padding: 0.7rem 1rem;
    border: 1px solid #334155;
    border-radius: var(--radius-sm);
    background: #1e293b;
    color: #fff;
    font-size: 0.95rem;
}

.newsletter-form input::placeholder {
    color: var(--color-footer-muted);
}

.newsletter-form input:focus {
    outline: none;
    border-color: #475569;
}

.newsletter-form button {
    padding: 0.7rem 1.25rem;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.95rem;
    transition: background var(--transition);
}

.newsletter-form button:hover {
    background: var(--color-primary-hover);
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding: 1.25rem 1.5rem;
    text-align: center;
    color: var(--color-footer-muted);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: #7dd3fc;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .header-container {
        padding: 1rem 1.25rem;
    }

    main {
        padding: 1.5rem 1.25rem;
    }

    .document-image img {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .header {
        border-bottom: none;
    }

    .header-container {
        position: relative;
    }

    .nav {
        background: var(--color-bg-card);
        flex-direction: column;
        align-items: stretch;
        padding: 0;
        margin: 0;
        min-height: 0;
        box-shadow: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        border: none;
        order: 1;
        width: 100%;
        flex-basis: 100%;
        box-sizing: border-box;
    }

    .header .header-container {
        flex-wrap: wrap;
    }

    .nav.nav-open {
        max-height: 400px;
        padding: 0 1rem 0.75rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-sm);
    }

    .nav a {
        padding: 0.75rem 1rem;
        border-radius: var(--radius-sm);
        color: var(--color-text) !important;
    }

    .nav a:hover {
        color: var(--color-primary) !important;
        background: var(--color-primary-light) !important;
    }

    .nav a.active {
        color: var(--color-primary) !important;
        background: var(--color-primary-light) !important;
    }

    .nav a.admin-link {
        color: #b91c1c !important;
    }

    .nav a.admin-link:hover {
        background: #fef2f2 !important;
        color: #991b1b !important;
    }

    .header-container {
        padding: 0.75rem 1rem;
    }

    main {
        padding: 1.25rem 1rem;
        min-height: calc(100vh - 280px);
    }

    .filter-buttons {
        gap: 0.4rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .news-item {
        padding: 1.25rem;
    }

    .footer-container {
        grid-template-columns: 1fr;
        padding: 2rem 1rem;
        gap: 1.5rem;
    }

    .document-item {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 1rem;
    }

    .document-image {
        width: 100%;
        text-align: center;
    }

    .document-image img {
        width: 100%;
        max-width: 280px;
        height: auto;
        aspect-ratio: 1;
        margin: 0 auto;
    }

    .document-link {
        width: 100%;
        text-align: center;
        padding: 0.75rem;
    }

    .timeline-item {
        flex-direction: column;
        gap: 0.25rem;
    }

    .timeline-year {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.15rem;
    }

    main {
        padding: 1rem 0.75rem;
    }

    .news-item {
        padding: 1rem;
    }

    .news-title {
        font-size: 1.2rem;
    }

    .footer-container {
        padding: 1.5rem 0.75rem;
    }

    .footer-section {
        min-height: 0;
    }

    .footer-bottom {
        padding: 1rem 0.75rem;
        font-size: 0.8rem;
        line-height: 1.6;
    }

    .footer-bottom p {
        word-break: break-word;
    }
}