/* ===== LAYOUT ===== */
.container {
    width: min(1200px, calc(100% - 2.5rem));
    margin: 0 auto;
}

.page-body {
    min-height: calc(100vh - var(--header-height) - 160px);
    padding: 1.75rem 0 2.5rem;
}

/* ----- Public Header ----- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: var(--header-height);
    padding: 0.5rem 0;
}

.site-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    flex-shrink: 0;
    white-space: nowrap;
}

.site-logo:hover {
    color: var(--text);
    text-decoration: none;
    opacity: 0.8;
}

.category-nav {
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.category-nav::-webkit-scrollbar {
    display: none;
}

.category-nav-list {
    display: flex;
    align-items: center;
    gap: 0.15rem 1.25rem;
    flex-wrap: wrap;
}

.category-nav-list a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    padding: 0.35rem 0;
}

.category-nav-list a:hover {
    color: var(--text);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    padding: 0.5rem 0.6rem;
    cursor: pointer;
}

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

.menu-bar {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
}

/* ----- Footer ----- */
.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    margin-top: 3rem;
    padding: 2.5rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(140px, 1fr) minmax(140px, 1fr) minmax(280px, 2fr);
    gap: 2rem 3rem;
    align-items: start;
    padding-bottom: 2rem;
}

.footer-col-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0 0 0.85rem;
    color: var(--text);
}

.footer-brand {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    margin: 0 0 0.65rem;
    color: var(--text);
}

.footer-site-url {
    font-size: 0.9rem;
    color: var(--text);
    text-decoration: none;
    word-break: break-all;
}

.footer-site-url:hover {
    color: var(--primary);
}

.footer-info-links {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.footer-info-links a {
    font-size: 0.9rem;
    color: var(--text);
    text-decoration: none;
}

.footer-info-links a:hover {
    color: var(--primary);
}

.footer-category-nav {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0.55rem 1.25rem;
}

.footer-category-nav a {
    font-size: 0.9rem;
    color: var(--text);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.footer-category-nav a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 1rem 0 1.25rem;
}

.footer-copy {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
    text-align: center;
}

/* ----- Home Grid ----- */
.home-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    align-items: start;
}

.main-column {
    min-width: 0;
}

.side-column {
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
}

/* ----- Admin Layout ----- */
.admin-body {
    background: var(--background);
}

.admin-shell {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 200;
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}

.admin-sidebar.is-collapsed {
    width: var(--sidebar-collapsed);
}

.admin-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text);
    white-space: nowrap;
}

.sidebar-toggle {
    margin-left: auto;
    background: var(--border-light);
    border: none;
    border-radius: var(--radius-sm);
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast);
    flex-shrink: 0;
}

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

.admin-sidebar.is-collapsed .sidebar-label,
.admin-sidebar.is-collapsed .admin-sidebar-brand span {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.admin-nav {
    flex: 1;
    padding: 1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 0.85rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.admin-nav a:hover {
    background: var(--primary-light);
    color: var(--primary);
    text-decoration: none;
    transform: translateX(2px);
}

.admin-nav a.is-active {
    background: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.admin-nav a.is-active:hover {
    color: #fff;
    background: var(--primary-hover);
}

.admin-nav .nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.admin-sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid var(--border);
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-sidebar.is-collapsed ~ .admin-main {
    margin-left: var(--sidebar-collapsed);
}

.admin-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.admin-topbar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
}

.admin-content {
    flex: 1;
    padding: 1.5rem;
}

/* ----- Login ----- */
.login-body {
    display: grid;
    place-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fafc 50%, #ede9fe 100%);
    padding: 1.5rem;
}

.login-wrapper {
    width: min(420px, 100%);
    animation: fadeInScale 0.5s ease-out;
}

.login-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem 2rem;
    border: 1px solid var(--border);
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.login-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.login-logo {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    border-radius: var(--radius);
    display: grid;
    place-items: center;
    margin: 0 auto 1.25rem;
    color: #fff;
}