:root {
    --bg: #06080d;
    --card: #0f1523;
    --card-2: #101a2c;
    --text: #e8f2ff;
    --muted: #9cb2d1;
    --line: #20314f;
    --neon: #00b7ff;
    --danger: #ff4f6f;
    --success: #2de2a1;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Inter, Segoe UI, Arial, sans-serif;
    background: radial-gradient(circle at top right, #0a1430, var(--bg) 45%);
    color: var(--text);
}

a { color: var(--text); text-decoration: none; }
code { color: #8dd6ff; }

.app-page {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: #09101b;
    border-right: 1px solid var(--line);
    padding: 22px 16px;
    position: relative;
    z-index: 50;
}

.brand {
    font-size: 18px;
    font-weight: 700;
    color: var(--neon);
    margin-bottom: 20px;
}

.sidebar nav a {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--muted);
    margin-bottom: 8px;
}

.sidebar nav a.active,
.sidebar nav a:hover {
    background: linear-gradient(90deg, rgba(0, 183, 255, 0.25), rgba(0, 183, 255, 0.05));
    color: #fff;
}

.main { padding: 20px; }

.main,
.topbar,
.card,
.table,
.btn,
input,
select,
textarea,
a {
    position: relative;
    z-index: 5;
}

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

.topbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
}

.card {
    background: linear-gradient(180deg, var(--card), var(--card-2));
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 14px;
}

.card-grid.two-col,
.chart-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card h3 { margin: 0; color: var(--muted); font-size: 13px; }
.stat-card p { margin: 8px 0 0; font-size: 30px; font-weight: 700; color: var(--neon); }

.chart-card { min-height: 320px; }

.chart-card {
    overflow: hidden;
}

#salesChart,
#statusChart {
    max-width: 100% !important;
    max-height: 300px !important;
}

canvas,
.chartjs-size-monitor,
.chartjs-size-monitor * {
    pointer-events: none !important;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    border-bottom: 1px solid var(--line);
    text-align: left;
    padding: 10px;
    font-size: 13px;
}

.table.compact th,
.table.compact td {
    padding: 8px;
    font-size: 12px;
}

.form-grid {
    display: grid;
    gap: 8px;
}

input, select, textarea {
    width: 100%;
    background: #090f19;
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-row input {
    width: auto;
}

.btn {
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 9px 13px;
    cursor: pointer;
    font-weight: 600;
    font-size: 12px;
}

.btn-primary {
    background: linear-gradient(180deg, #1b95ff, #0070d8);
    color: #fff;
}

.btn-secondary {
    background: #131f33;
    color: #d7e7ff;
    border-color: var(--line);
}

.btn-danger {
    background: #3a1320;
    color: #ffc8d3;
    border-color: #7a2740;
}

.inline-form {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.alert {
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(45, 226, 161, 0.08);
    border-color: rgba(45, 226, 161, 0.35);
    color: #8bfad0;
}

.alert-error {
    background: rgba(255, 79, 111, 0.08);
    border-color: rgba(255, 79, 111, 0.35);
    color: #ffafbe;
}

.muted { color: var(--muted); }

.code-block {
    max-height: 520px;
    overflow: auto;
    background: #061020;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 12px;
    color: #b5d8ff;
    white-space: pre-wrap;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 430px;
    background: linear-gradient(180deg, var(--card), var(--card-2));
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 22px;
}

.auth-card h1 { margin-top: 0; }
.helper-note { color: var(--muted); font-size: 12px; margin-top: 12px; }

@media (max-width: 1200px) {
    .card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
    .app-page { grid-template-columns: 1fr; }
    .sidebar { position: sticky; top: 0; z-index: 10; }
    .card-grid,
    .chart-grid,
    .card-grid.two-col { grid-template-columns: 1fr; }
}