/* Variables & Reset */
:root {
    --bg-color: #0d1117;
    --panel-bg: #161b22;
    --border-color: #30363d;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    --accent-color: #58a6ff;
    --accent-hover: #3182ce;
    --success-color: #2ea043;
    --warning-color: #d29922;
    --danger-color: #f85149;
    --btn-bg: #21262d;
    --btn-hover: #30363d;
    --btn-border: rgba(240, 246, 252, 0.1);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-x: hidden;
}

/* Header */
header {
    height: 60px;
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    flex-shrink: 0;
}

.header-left h1 {
    font-size: 1.25rem;
    color: var(--accent-color);
    margin-right: 10px;
    display: inline-block;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    gap: 15px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    padding: 5px 10px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover {
    background-color: var(--btn-hover);
    color: var(--text-main);
}

.nav-links a.active {
    color: #fff;
    background-color: var(--btn-bg);
    border: 1px solid var(--border-color);
}

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

.header-right input {
    padding: 5px 10px;
    font-size: 0.9rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-main);
    width: 120px;
}

button {
    background-color: var(--btn-bg);
    color: var(--text-main);
    border: 1px solid var(--btn-border);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background-color: var(--btn-hover);
}

/* Main Layout */
main {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* KPI Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.kpi-card {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.kpi-card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    font-weight: normal;
}

.kpi-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-main);
}

/* Panels */
.two-col-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    height: 350px;
}

.panel-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.panel-content {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    margin-top: auto;
    margin-bottom: auto;
}

/* Alert Items */
.alert-item {
    padding: 10px;
    border-radius: 6px;
    border-left: 4px solid var(--warning-color);
    background: rgba(210, 153, 34, 0.1);
    font-size: 0.9rem;
}

.alert-item.danger {
    border-left-color: var(--danger-color);
    background: rgba(248, 81, 73, 0.1);
}

.alert-title {
    font-weight: bold;
    margin-bottom: 4px;
}

/* Review Queue Items */
.queue-item {
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    border-radius: 6px;
    padding: 12px;
}

.queue-flags {
    font-size: 0.8rem;
    color: var(--danger-color);
    margin-bottom: 8px;
}

.queue-qa {
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.queue-qa strong {
    color: var(--accent-color);
}

.queue-actions {
    display: flex;
    gap: 10px;
}

.btn-approve {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
}

.btn-reject {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
    color: #fff;
}

/* Timeline Items */
.timeline-item {
    display: flex;
    gap: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.tl-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.tl-content {
    font-size: 0.9rem;
}

.tl-type {
    font-weight: bold;
    color: var(--accent-color);
}

/* Footer */
footer {
    height: 40px;
    background-color: var(--panel-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
}