:root {
    --bg: #0f1115;
    --panel: #171a21;
    --panel-2: #1e222b;
    --border: #2a2f3a;
    --text: #e7e9ee;
    --muted: #9aa2b1;
    --primary: #4f7cff;
    --primary-hover: #3d68eb;
    --green: #1f9d55;
    --green-bg: rgba(31, 157, 85, 0.18);
    --error: #e5484d;
    --error-bg: rgba(229, 72, 77, 0.15);
    --radius: 10px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

a {
    color: var(--primary);
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px 64px;
}

.topbar {
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text);
}

.topnav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.topnav a {
    color: var(--muted);
    font-weight: 500;
    padding: 6px 2px;
    border-bottom: 2px solid transparent;
}

.topnav a.active,
.topnav a:hover {
    color: var(--text);
    border-bottom-color: var(--primary);
}

.topnav a.logout {
    color: var(--error);
}

h1 {
    font-size: 1.6rem;
    margin: 0 0 8px;
}

h2 {
    font-size: 1.1rem;
    margin: 0 0 12px;
}

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

.muted.small {
    font-size: 0.85rem;
}

.login-box {
    max-width: 380px;
    margin: 64px auto;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

form label {
    display: block;
    margin: 14px 0 6px;
    font-size: 0.85rem;
    color: var(--muted);
}

form input[type="text"],
form input[type="password"],
form select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--panel-2);
    color: var(--text);
    font-size: 0.95rem;
}

form input:focus,
form select:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    display: inline-block;
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.settings-form {
    max-width: 560px;
}

.settings-section {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.alert-error {
    background: var(--error-bg);
    color: #ff9a9c;
    border: 1px solid rgba(229, 72, 77, 0.35);
}

.alert-success {
    background: var(--green-bg);
    color: #6fd399;
    border: 1px solid rgba(31, 157, 85, 0.35);
}

.empty-state {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    margin-top: 24px;
}

.legend {
    display: flex;
    gap: 20px;
    margin: 16px 0;
    font-size: 0.85rem;
    color: var(--muted);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.swatch {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: var(--panel-2);
    border: 1px solid var(--border);
    display: inline-block;
}

.swatch.cheaper {
    background: var(--green-bg);
    border-color: rgba(31, 157, 85, 0.5);
}

.table-scroll {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.price-table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.85rem;
    white-space: nowrap;
}

.price-table th,
.price-table td {
    padding: 10px 12px;
    text-align: right;
    border-bottom: 1px solid var(--border);
}

.price-table thead th {
    background: var(--panel-2);
    text-align: center;
    position: sticky;
    top: 0;
}

.price-table thead th.sub {
    font-weight: 500;
    color: var(--muted);
    font-size: 0.75rem;
}

.price-table .ext-cell {
    text-align: left;
    font-weight: 600;
    position: sticky;
    left: 0;
    background: var(--panel);
}

.price-table td.cheaper {
    background: var(--green-bg);
    color: #6fd399;
    font-weight: 600;
}

.price-table tbody tr:hover td {
    background-color: var(--panel-2);
}

.price-table tbody tr:hover td.cheaper {
    background-color: var(--green-bg);
}