/* ============================================================
   LoadBalanced System - Shared Styles
   ============================================================ */

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --border: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --success: #4ade80;
    --warning: #facc15;
    --danger: #f87171;
    --info: #818cf8;
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* ============================================================
   Layout
   ============================================================ */
.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
.container-wide { max-width: 1440px; margin: 0 auto; padding: 20px; }

/* ============================================================
   Navigation
   ============================================================ */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar-inner {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.navbar-brand {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent) !important;
    text-decoration: none !important;
}
.navbar-brand span { color: var(--text-muted); font-weight: 400; font-size: 14px; }
.navbar-nav {
    display: flex;
    list-style: none;
    gap: 5px;
}
.navbar-nav a {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s;
}
.navbar-nav a:hover,
.navbar-nav a.active {
    background: var(--bg-hover);
    color: var(--text-primary);
}
.navbar-nav a.active { color: var(--accent); }

/* ============================================================
   Cards & Grid
   ============================================================ */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-gallery { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: border-color 0.2s;
}
.card:hover { border-color: var(--accent); }
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

/* Stat Cards */
.stat-card .stat-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.stat-card .stat-value {
    font-size: 32px;
    font-weight: 700;
    line-height: 1;
}
.stat-card .stat-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
}
.stat-card.blue .stat-value { color: var(--accent); }
.stat-card.green .stat-value { color: var(--success); }
.stat-card.yellow .stat-value { color: var(--warning); }
.stat-card.red .stat-value { color: var(--danger); }
.stat-card.purple .stat-value { color: var(--info); }

/* ============================================================
   Tables
   ============================================================ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
thead { background: var(--bg-secondary); }
th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
}
td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}
tr:hover td { background: rgba(56, 189, 248, 0.05); }
tr:last-child td { border-bottom: none; }

/* ============================================================
   Badges
   ============================================================ */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-blue { background: #1e3a5f; color: var(--accent); }
.badge-green { background: #1a3a2a; color: var(--success); }
.badge-yellow { background: #3a3520; color: var(--warning); }
.badge-red { background: #3a1a1a; color: var(--danger); }
.badge-purple { background: #2a1a4a; color: var(--info); }
.badge-gray { background: #2a2a3a; color: var(--text-muted); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none !important;
}
.btn-primary { background: var(--accent); color: #0f172a; }
.btn-primary:hover { background: var(--accent-hover); color: #0f172a; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #ef4444; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* ============================================================
   Forms
   ============================================================ */
.form-group { margin-bottom: 16px; }
.form-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.form-textarea { min-height: 100px; resize: vertical; }

.search-box {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}
.search-box input { flex: 1; }

/* ============================================================
   Pagination
   ============================================================ */
.pagination {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-top: 30px;
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    text-decoration: none;
}
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .active {
    background: var(--accent);
    color: #0f172a;
    border-color: var(--accent);
    font-weight: 600;
}
.pagination .disabled { opacity: 0.3; pointer-events: none; }

/* ============================================================
   Media Gallery
   ============================================================ */
.media-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: all 0.2s;
}
.media-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.media-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}
.media-card .media-info {
    padding: 12px;
}
.media-card .media-info .filename {
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.media-card .media-info .meta {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================================
   Utility
   ============================================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-accent { color: var(--accent); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: 16px; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
.page-title { font-size: 24px; font-weight: 700; margin-bottom: 24px; }
.section-title { font-size: 18px; font-weight: 600; margin-bottom: 16px; color: var(--accent); }

/* ============================================================
   Upload Area
   ============================================================ */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}
.upload-area:hover { border-color: var(--accent); background: rgba(56,189,248,0.05); }
.upload-area.dragover { border-color: var(--accent); background: rgba(56,189,248,0.1); }
.upload-area .upload-icon { font-size: 48px; color: var(--text-muted); margin-bottom: 10px; }
.upload-area p { color: var(--text-muted); }

/* ============================================================
   Status indicators
   ============================================================ */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}
.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--danger); }
.status-dot.pending { background: var(--warning); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
    .navbar-nav { gap: 0; }
    .navbar-nav a { padding: 8px 10px; font-size: 12px; }
    .stat-card .stat-value { font-size: 24px; }
    .container { padding: 10px; }
}