:root {
    --bg-main: #0b1120;
    --bg-card: #131d31;
    --bg-card-hover: #1a2744;
    --bg-input: #0f172a;
    --border: #233554;
    --border-light: #334d7a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-glow: rgba(59, 130, 246, 0.25);
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --purple: #8b5cf6;
    --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

/* Header */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.brand-badge {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    text-transform: uppercase;
}
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Badges & Tags */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}
.badge-draft { background: #334155; color: #cbd5e1; }
.badge-appopen { background: rgba(59, 130, 246, 0.2); color: #60a5fa; border: 1px solid #3b82f6; }
.badge-confirmed { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border: 1px solid #f59e0b; }
.badge-live { background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid #10b981; animation: pulse 2s infinite; }
.badge-done { background: rgba(139, 92, 246, 0.2); color: #c084fc; border: 1px solid #8b5cf6; }
.badge-cancelled { background: var(--danger-bg); color: #f87171; border: 1px solid var(--danger); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.ws-badge {
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--bg-input);
}
.ws-ok { color: var(--success); border-color: var(--success); }
.ws-warn { color: var(--warning); border-color: var(--warning); }
.ws-err { color: var(--danger); border-color: var(--danger); }

/* Layout Containers */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* Auth Section */
.auth-box {
    max-width: 400px;
    margin: 80px auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}
.auth-box h2 {
    margin-bottom: 20px;
    font-size: 1.3rem;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-muted);
    font-size: 13px;
}
input, select, textarea {
    width: 100%;
    background: var(--bg-input);
    color: var(--text-main);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
}
textarea { resize: vertical; min-height: 80px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 13px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.15s ease-in-out;
    text-decoration: none;
}
.btn:hover { background: var(--bg-card-hover); border-color: var(--border-light); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--danger-bg); border-color: var(--danger); color: #fca5a5; }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning-bg); border-color: var(--warning); color: #fde047; }
.btn-sm { padding: 4px 8px; font-size: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Level 1: Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}
.dashboard-title h1 {
    font-size: 1.6rem;
    font-weight: 700;
}
.dashboard-title p {
    color: var(--text-muted);
    font-size: 14px;
}
.dashboard-actions {
    display: flex;
    gap: 10px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}
.stat-label {
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    font-weight: 600;
}
.stat-val {
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 4px;
}

/* Filter Bar */
.filter-bar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}
.filter-bar input { max-width: 320px; }
.filter-bar select { max-width: 200px; }

/* Tournament Grid / Cards */
.tournaments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 20px;
}
.tournament-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.15s, border-color 0.15s;
    position: relative;
    overflow: hidden;
}
.tournament-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-light);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.tcard-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}
.tcard-org {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
}
.tcard-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 4px 0 10px;
    color: #fff;
}
.tcard-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    background: var(--bg-main);
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 16px;
    text-align: center;
}
.metric-item .metric-label { font-size: 11px; color: var(--text-dim); }
.metric-item .metric-num { font-size: 14px; font-weight: 700; color: var(--text-main); }

.tcard-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 14px;
    margin-top: auto;
}

/* Level 2: Tournament Detail View */
.detail-header {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
}
.detail-nav-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.detail-title-row {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.detail-title-row h2 {
    font-size: 1.5rem;
    font-weight: 700;
}
.detail-quick-links {
    margin-top: 14px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Tabs */
.tabs-nav {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
    overflow-x: auto;
}
.tab-btn {
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 600;
    padding: 12px 18px;
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s;
}
.tab-btn:hover { color: var(--text-main); }
.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: rgba(59, 130, 246, 0.08);
    border-radius: 6px 6px 0 0;
}

.tab-pane {
    display: none;
}
.tab-pane.active {
    display: block;
    animation: fadeIn 0.2s ease-in-out;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Content Boxes & Cards inside Tabs */
.panel-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}
.panel-box h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
th {
    color: var(--text-muted);
    font-weight: 600;
    background: rgba(15, 23, 42, 0.6);
}
tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}
.modal-header h3 { font-size: 1.25rem; font-weight: 700; }
.close-modal { background: none; border: none; font-size: 20px; color: var(--text-muted); cursor: pointer; }

/* Grid Columns */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* Helpers */
.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.flex-gap { display: flex; gap: 8px; align-items: center; }

/* Toast */
#toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 2000;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    display: none;
}
#toast.ok { background: #064e3b; border: 1px solid #059669; color: #a7f3d0; }
#toast.err { background: #7f1d1d; border: 1px solid #dc2626; color: #fecaca; }