/* ============================================================
   ClayBBS UI — Premium Forum Theme
   ============================================================ */

/* ---- Variables ---- */
:root {
    --bg: #f3f5f9;
    --surface: #ffffff;
    --surface-hover: #f8f9fc;
    --text: #1a1d2e;
    --text-secondary: #64748b;
    --primary: #635bff;
    --primary-light: #eeefff;
    --primary-dark: #4f46e5;
    --accent: #06d6a0;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #22c55e;
    --border: #e5eaf2;
    --shadow: 0 4px 24px rgba(99,91,255,0.06);
    --shadow-lg: 0 12px 48px rgba(99,91,255,0.10);
    --radius: 14px;
    --radius-sm: 8px;
    --radius-full: 9999px;
    --sidebar-w: 260px;
    --topbar-h: 64px;
    --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
    --font: 'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}

[data-theme="dark"] {
    --bg: #0f1117;
    --surface: #181b27;
    --surface-hover: #1e2233;
    --text: #eef2ff;
    --text-secondary: #94a3b8;
    --primary: #818cf8;
    --primary-light: #1e1b4b;
    --primary-dark: #6366f1;
    --border: #2d3348;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.4);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* ---- Animations ---- */
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes slideInLeft { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: none; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.fade-in { animation: fadeIn 0.4s ease-out both; }
.slide-in { animation: slideInLeft 0.35s ease-out both; }
.scale-in { animation: scaleIn 0.3s ease-out both; }

/* ---- Skeleton Loading ---- */
.skeleton { background: linear-gradient(90deg, var(--border) 25%, var(--surface-hover) 50%, var(--border) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: var(--radius-sm); height: 20px; }

/* ---- Topbar ---- */
.topbar {
    height: var(--topbar-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.topbar-brand {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.topbar-brand .accent { color: var(--primary); }
.topbar-nav { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.topbar-nav a, .topbar-nav button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    text-decoration: none;
}
.topbar-nav a:hover, .topbar-nav button:hover {
    background: var(--primary-light);
    color: var(--primary);
}
.topbar-hamburger {
    display: none;
    border: none;
    background: transparent;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
    margin-right: 12px;
    padding: 4px;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: var(--danger);
    line-height: 1;
}
.badge-primary { background: var(--primary); }
.badge-success { background: var(--success); }

/* User dropdown */
.user-dropdown {
    position: relative;
}
.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius);
    transition: background var(--transition);
}
.user-dropdown-toggle:hover { background: var(--surface-hover); }
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    overflow: hidden;
}
.user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.user-dropdown-menu {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    width: 200px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition);
    z-index: 200;
}
.user-dropdown.open .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: none;
}
.user-dropdown-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--text);
    font-size: 14px;
    transition: background var(--transition);
}
.user-dropdown-menu a:hover { background: var(--surface-hover); }
.user-dropdown-menu hr { border: none; border-top: 1px solid var(--border); margin: 4px 0; }

/* ---- Layout ---- */
.layout { display: flex; min-height: calc(100vh - var(--topbar-h)); }

/* ---- Sidebar ---- */
.sidebar {
    width: var(--sidebar-w);
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    overflow-y: auto;
    position: sticky;
    top: var(--topbar-h);
    height: calc(100vh - var(--topbar-h));
    flex-shrink: 0;
    transition: transform var(--transition);
}
.sidebar-section { padding: 0 12px; margin-bottom: 8px; }
.sidebar-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    padding: 8px 16px;
    user-select: none;
}
.sidebar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    margin: 2px 0;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    user-select: none;
}
.sidebar-item:hover { background: var(--surface-hover); color: var(--text); }
.sidebar-item.active { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.sidebar-item .icon { font-size: 18px; width: 22px; text-align: center; }
.sidebar-item .arrow {
    margin-left: auto;
    font-size: 12px;
    transition: transform var(--transition);
}
.sidebar-item.expanded .arrow { transform: rotate(90deg); }
.sidebar-children {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding-left: 22px;
}
.sidebar-children.open { max-height: 600px; }
.sidebar-children .sidebar-item { font-size: 13px; padding: 8px 16px; }

/* ---- Main Content ---- */
.main-content {
    flex: 1;
    padding: 28px 36px;
    max-width: 1000px;
    min-width: 0;
    animation: fadeIn 0.4s ease-out;
}

/* ---- Cards ---- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 16px;
    transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.card-title { font-size: 18px; font-weight: 700; }

/* ---- Hero ---- */
.hero {
    padding: 52px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--surface), var(--primary-light));
    box-shadow: var(--shadow);
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}
.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99,91,255,0.08), transparent 70%);
    border-radius: 50%;
}
.hero .eyebrow {
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
}
.hero h1 {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    margin: 12px 0 8px;
    letter-spacing: -1px;
}
.hero p { color: var(--text-secondary); font-size: 17px; max-width: 480px; }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.15);
    opacity: 0;
    transition: opacity var(--transition);
}
.btn:hover::after { opacity: 1; }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(99,91,255,0.3); }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 6px 20px rgba(99,91,255,0.4); color: #fff; }
.btn-outline { border: 1.5px solid var(--border); background: transparent; color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: var(--radius-sm); }

/* ---- Forms ---- */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.form-control {
    display: block;
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font-size: 15px;
    transition: all var(--transition);
    outline: none;
}
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,91,255,0.12);
}
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

/* ---- Alerts ---- */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
    animation: scaleIn 0.3s ease-out;
}
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #15803d; }
.alert-info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1d4ed8; }
[data-theme="dark"] .alert-error { background: #371717; border-color: #5c1d1d; }
[data-theme="dark"] .alert-success { background: #14291a; border-color: #1d4426; }
[data-theme="dark"] .alert-info { background: #1a2541; border-color: #223563; }

/* ---- Toast ---- */
.toast-container {
    position: fixed;
    top: 80px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 14px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    animation: slideInLeft 0.35s ease-out;
    min-width: 260px;
}
.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
table.data-table th {
    text-align: left;
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--border);
}
table.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
table.data-table tr:hover td { background: var(--surface-hover); }

/* ---- Thread List ---- */
.thread-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
.thread-item:hover { background: var(--surface-hover); }
.thread-item:last-child { border-bottom: none; }
.thread-avatar { flex-shrink: 0; }
.thread-body { flex: 1; min-width: 0; }
.thread-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.thread-title a { color: inherit; }
.thread-title a:hover { color: var(--primary); }
.thread-meta {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.thread-stats {
    display: flex;
    gap: 16px;
    align-items: center;
    color: var(--text-secondary);
    font-size: 13px;
    flex-shrink: 0;
}
.pin-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: var(--warning);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
}
.lock-badge { background: var(--text-secondary); }

/* ---- Board Card ---- */
.board-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    transition: all var(--transition);
}
.board-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
    border-color: var(--primary);
}
.board-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.board-info { flex: 1; min-width: 0; }
.board-name { font-weight: 700; font-size: 16px; }
.board-desc { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }
.board-stats { font-size: 12px; color: var(--text-secondary); flex-shrink: 0; text-align: right; }

/* ---- Category Header ---- */
.category-header {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-secondary);
    padding: 20px 0 8px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 12px;
}

/* ---- Post ---- */
.post-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    border-bottom: 1px solid var(--border);
    animation: fadeIn 0.3s ease-out both;
}
.post-item:last-child { border-bottom: none; }
.post-sidebar { width: 120px; text-align: center; flex-shrink: 0; }
.post-user-name { font-weight: 700; font-size: 14px; color: var(--primary); }
.post-user-group { font-size: 11px; padding: 2px 8px; border-radius: var(--radius-full); display: inline-block; margin-top: 4px; }
.post-content { flex: 1; min-width: 0; }
.post-content .body { line-height: 1.75; }
.post-content .body img { max-width: 100%; border-radius: var(--radius-sm); margin: 8px 0; }
.post-content .body blockquote { border-left: 3px solid var(--primary); padding: 8px 16px; margin: 12px 0; background: var(--surface-hover); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.post-content .body pre { background: var(--bg); padding: 14px; border-radius: var(--radius-sm); overflow-x: auto; font-size: 13px; }
.post-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}
.post-actions button, .post-actions a {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}
.post-actions button:hover, .post-actions a:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.post-actions .liked { color: var(--danger); border-color: var(--danger); }

/* ---- Pagination ---- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 24px 0;
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}
.pagination a:hover { background: var(--primary-light); color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; }

/* ---- Notifications ---- */
.notif-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
.notif-item:hover { background: var(--surface-hover); }
.notif-item.unread { border-left: 3px solid var(--primary); background: var(--primary-light); }
.notif-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); flex-shrink: 0; margin-top: 6px; }
.notif-body { flex: 1; }
.notif-body .title { font-weight: 600; font-size: 14px; }
.notif-body .time { font-size: 12px; color: var(--text-secondary); }

/* ---- Install ---- */
.install-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg), var(--primary-light));
}
.install-container {
    width: 100%;
    max-width: 560px;
    animation: fadeIn 0.5s ease-out;
}
.install-brand {
    text-align: center;
    margin-bottom: 28px;
}
.logo-text {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -1px;
}
.logo-text .accent { color: var(--primary); }
.install-subtitle { color: var(--text-secondary); font-size: 15px; margin-top: 4px; }
.install-steps {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}
.step-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}
.step-item span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    border: 2px solid var(--border);
    font-size: 13px;
    font-weight: 700;
}
.step-item.active span { border-color: var(--primary); color: var(--primary); }
.step-item.done span { background: var(--success); border-color: var(--success); color: #fff; }
.install-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}
.install-card h2 { font-size: 22px; font-weight: 700; margin-bottom: 20px; }
.install-card label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}
.install-card input {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    background: var(--bg);
    transition: border-color var(--transition);
}
.install-card input:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(99,91,255,0.12); }
.check-table { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.check-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
.check-table .pass { color: var(--success); font-weight: 600; }
.check-table .fail { color: var(--danger); font-weight: 600; }

/* ---- Admin Sidebar ---- */
.admin-layout { display: flex; min-height: calc(100vh - var(--topbar-h)); }
.admin-sidebar { width: var(--sidebar-w); background: var(--surface); border-right: 1px solid var(--border); padding: 20px 0; overflow-y: auto; position: sticky; top: var(--topbar-h); height: calc(100vh - var(--topbar-h)); flex-shrink: 0; }
.admin-main { flex: 1; padding: 28px 36px; min-width: 0; }
.admin-main h1 { font-size: 26px; font-weight: 800; margin-bottom: 24px; }

/* ---- Dashboard Stats ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.stat-label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.stat-value { font-size: 32px; font-weight: 800; margin-top: 4px; }
.stat-value.primary { color: var(--primary); }
.stat-value.success { color: var(--success); }
.stat-value.warning { color: var(--warning); }
.stat-value.danger { color: var(--danger); }

/* ---- Modal ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 560px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: transform var(--transition);
}
.modal-overlay.open .modal { transform: none; }
.modal h2 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }

/* ---- Tabs ---- */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
}
.tab-item {
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition);
}
.tab-item:hover { color: var(--text); }
.tab-item.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-state .title { font-size: 18px; font-weight: 600; color: var(--text); }
.empty-state .desc { font-size: 14px; margin-top: 6px; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .topbar-hamburger { display: block; }
    .sidebar, .admin-sidebar {
        position: fixed;
        left: 0;
        top: var(--topbar-h);
        height: calc(100vh - var(--topbar-h));
        z-index: 50;
        transform: translateX(-100%);
        box-shadow: var(--shadow-lg);
    }
    .sidebar.open, .admin-sidebar.open { transform: none; }
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        top: var(--topbar-h);
        background: rgba(0,0,0,0.4);
        z-index: 49;
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
    }
    .sidebar-overlay.open { opacity: 1; visibility: visible; }
    .main-content, .admin-main { padding: 16px; }
    .hero { padding: 28px; }
    .hero h1 { font-size: 26px; }
    .post-item { flex-direction: column; }
    .post-sidebar { width: 100%; text-align: left; display: flex; align-items: center; gap: 10px; }
    .thread-item { flex-direction: column; }
    .thread-stats { margin-top: 8px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .topbar-nav .hide-mobile { display: none; }
    .stats-grid { grid-template-columns: 1fr; }
}

/* ---- Captcha ---- */
.captcha-label input { width: 120px; display: inline-block; margin-left: 8px; }

/* ---- Tag ---- */
.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary);
}

/* ---- Footer ---- */
.footer {
    text-align: center;
    padding: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    border-top: 1px solid var(--border);
}

/* ---- Editor toolbar placeholder ---- */
.editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px;
    border: 1.5px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    background: var(--surface-hover);
}
.editor-toolbar button {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.editor-toolbar button:hover { background: var(--primary-light); color: var(--primary); }
.editor-area {
    border: 1.5px solid var(--border);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    min-height: 200px;
    padding: 14px;
    outline: none;
    line-height: 1.7;
}
.editor-area:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,91,255,0.12); }