/* ═══════════════════════════════════════════
   U-Board Dashboard – CSS
   ═══════════════════════════════════════════ */

/* ── Variablen ── */
:root {
    --bg: #f0f2f5;
    --sidebar-bg: #ffffff;
    --card-bg: #ffffff;
    --card-shadow: 0 2px 12px rgba(0,0,0,0.06);
    --text: #1a1d23;
    --text-secondary: #6b7280;
    --heading: #111827;
    --accent: #f97316;
    --accent-light: rgba(249,115,22,0.1);
    --accent-hover: #ea580c;
    --border: #e5e7eb;
    --sidebar-active: #fef3e2;
    --stat-gradient-1: linear-gradient(135deg, #fff7ed, #ffedd5);
    --stat-gradient-2: linear-gradient(135deg, #fef2f2, #fecaca);
    --stat-gradient-3: linear-gradient(135deg, #ecfdf5, #d1fae5);
    --stat-icon-1: #f97316;
    --stat-icon-2: #ef4444;
    --stat-icon-3: #10b981;
    --toggle-bg: #e5e7eb;
    --toggle-knob: #ffffff;
    --panel-bg: #1f2937;
    --panel-text: #f9fafb;
    --panel-card-bg: #374151;
    --panel-border: #4b5563;
    --panel-accent: #fb923c;
    --table-header: #f9fafb;
    --table-stripe: #f9fafb;
    --radius: 16px;
    --radius-sm: 12px;
    --radius-xs: 8px;
}

[data-theme="dark"] {
    --bg: #111827;
    --sidebar-bg: #1f2937;
    --card-bg: #1f2937;
    --card-shadow: 0 2px 12px rgba(0,0,0,0.3);
    --text: #f3f4f6;
    --text-secondary: #9ca3af;
    --heading: #ffffff;
    --accent: #fb923c;
    --accent-light: rgba(251,146,60,0.15);
    --accent-hover: #f97316;
    --border: #374151;
    --sidebar-active: #2d1f0e;
    --stat-gradient-1: linear-gradient(135deg, #2d1f0e, #3b250a);
    --stat-gradient-2: linear-gradient(135deg, #2d0e0e, #3b0a0a);
    --stat-gradient-3: linear-gradient(135deg, #0e2d1a, #0a3b16);
    --stat-icon-1: #fb923c;
    --stat-icon-2: #f87171;
    --stat-icon-3: #34d399;
    --toggle-bg: #374151;
    --toggle-knob: #f9fafb;
    --panel-bg: #0f172a;
    --panel-text: #f1f5f9;
    --panel-card-bg: #1e293b;
    --panel-border: #334155;
    --panel-accent: #fb923c;
    --table-header: #1e293b;
    --table-stripe: #1e293b;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    transition: background 0.2s, color 0.2s;
    display: flex;
}

/* ── Sidebar ── */
.sidebar {
    width: 220px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 0;
    gap: 8px;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: background 0.2s, border 0.2s;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    background: var(--accent);
    border-radius: var(--radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    margin-left: 20px;
    flex-shrink: 0;
}

.sidebar-logo span {
    color: #fff;
    font-weight: 800;
    font-size: 1.1em;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 4px; width: 100%; padding: 0 12px; }

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-xs);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.15s;
    cursor: pointer;
}

.sidebar-link:hover { background: var(--accent-light); color: var(--accent); }
.sidebar-link.active { background: var(--sidebar-active); color: var(--accent); }

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

.sidebar-label {
    font-size: 0.95em;
    font-weight: 500;
}

.sidebar-bottom { margin-top: auto; padding: 0 12px; width: 100%; display: flex; flex-direction: column; gap: 4px; }

.sidebar-link.logout { color: #ef4444; }
.sidebar-link.logout:hover { background: rgba(239,68,68,0.1); }

/* ── Main Content ── */
.main {
    flex: 1;
    margin-left: 220px;
    display: flex;
    min-height: 100vh;
}

.content {
    flex: 1;
    padding: 28px 32px;
    overflow-y: auto;
}

/* ── Right Panel ── */
.right-panel {
    width: 360px;
    background: var(--panel-bg);
    color: var(--panel-text);
    padding: 28px 24px;
    overflow-y: auto;
    transition: background 0.2s;
    flex-shrink: 0;
}

.panel-title {
    font-size: 1.15em;
    font-weight: 700;
    margin-bottom: 20px;
}

.panel-card {
    background: var(--panel-card-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    padding: 18px;
    margin-bottom: 16px;
    cursor: pointer;
    transition: background 0.15s;
}

.panel-card:hover { background: var(--panel-border); }

.panel-card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-chevron {
    font-size: 1.3em;
    color: var(--panel-accent);
    transition: transform 0.2s;
    flex-shrink: 0;
    margin-left: 10px;
}

.panel-card.open .panel-chevron {
    transform: rotate(90deg);
}

.panel-card-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease, margin-top 0.25s ease, opacity 0.2s ease;
    font-size: 0.85em;
    line-height: 1.5;
    color: var(--panel-text);
    opacity: 0;
}

.panel-card.open .panel-card-body {
    max-height: 200px;
    margin-top: 12px;
    opacity: 0.8;
}

.panel-card-label {
    font-size: 0.8em;
    color: var(--panel-text);
    opacity: 0.6;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.panel-card-value {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--panel-accent);
}

/* ── Header ── */
.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.header-left h1 {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--heading);
}

.header-left .subtitle {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-top: 2px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ── Theme Toggle ── */
.theme-toggle {
    width: 44px;
    height: 26px;
    border-radius: 13px;
    border: none;
    background: var(--toggle-bg);
    cursor: pointer;
    position: relative;
    transition: background 0.2s;
    flex-shrink: 0;
}

.theme-toggle::after {
    content: '';
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--toggle-knob);
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

[data-theme="dark"] .theme-toggle::after {
    transform: translateX(18px);
}

/* ── Lang Switch ── */
.lang-switch { display: inline-flex; gap: 4px; }
.lang-switch a {
    padding: 5px 10px;
    border-radius: var(--radius-xs);
    text-decoration: none;
    font-size: 0.85em;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: all 0.15s;
}
.lang-switch a.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.lang-switch a:hover:not(.active) {
    border-color: var(--accent);
    color: var(--accent);
}

.detected {
    font-size: 0.75em;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ── Stats Cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    border-radius: var(--radius-sm);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    transition: transform 0.15s;
}
.stat-card:hover { transform: translateY(-2px); }

.stat-card:nth-child(1) { background: var(--stat-gradient-1); }
.stat-card:nth-child(2) { background: var(--stat-gradient-2); }
.stat-card:nth-child(3) { background: var(--stat-gradient-3); }

.stat-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    flex-shrink: 0;
}

.stat-card:nth-child(1) .stat-icon { background: var(--accent-light); color: var(--stat-icon-1); }
.stat-card:nth-child(2) .stat-icon { background: rgba(239,68,68,0.1); color: var(--stat-icon-2); }
.stat-card:nth-child(3) .stat-icon { background: rgba(16,185,129,0.1); color: var(--stat-icon-3); }

.stat-info { flex: 1; }
.stat-label { font-size: 0.85em; color: var(--text-secondary); margin-bottom: 4px; }
.stat-value { font-size: 1.6em; font-weight: 700; color: var(--heading); }
.stat-sub { font-size: 0.8em; color: var(--text-secondary); margin-top: 2px; }

.stat-badge {
    display: inline-block;
    font-size: 0.75em;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
    margin-top: 6px;
}
.stat-badge.ok { background: rgba(16,185,129,0.15); color: #059669; }
.stat-badge.warn { background: rgba(245,158,11,0.15); color: #d97706; }

[data-theme="dark"] .stat-badge.ok { color: #34d399; }
[data-theme="dark"] .stat-badge.warn { color: #fbbf24; }

/* ── Charts ── */
.charts-row {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 18px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 20px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border);
    transition: background 0.2s, border 0.2s;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.chart-header h2 {
    font-size: 1.05em;
    font-weight: 600;
    color: var(--heading);
}

.chart-header .tag {
    font-size: 0.8em;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 4px 10px;
    border-radius: 20px;
}

.chart-body canvas { width: 100% !important; max-height: 260px; }

/* ── Table ── */
.table-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: background 0.2s, border 0.2s;
}

.table-card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-card-header h2 {
    font-size: 1.05em;
    font-weight: 600;
    color: var(--heading);
}

.table-scroll { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }
th {
    padding: 12px 20px;
    text-align: left;
    font-size: 0.8em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: var(--table-header);
    white-space: nowrap;
}
td {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    font-size: 0.95em;
    vertical-align: middle;
}
tr:nth-child(even) { background: var(--table-stripe); }
tr:hover { background: var(--accent-light); }
.td-id { color: var(--text-secondary); font-family: 'SF Mono', monospace; font-size: 0.9em; }
.td-name { font-weight: 600; color: var(--heading); }
.td-bio { color: var(--text-secondary); max-width: 400px; }

/* ── Empty / Error ── */
.empty-msg {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1em;
}

/* ── Mobile ── */
@media (max-width: 1200px) {
    .right-panel { width: 300px; }
}

@media (max-width: 1024px) {
    .right-panel { display: none; }
    .charts-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .main { margin-left: 0; }
    .content { padding: 20px 16px; }
    .stats-grid { grid-template-columns: 1fr; }
    .header { flex-direction: column; }
}