:root {
    --bg-main: #0b0f19;
    --bg-card: #161f30;
    --bg-header: #1e293b;
    --border: #2e3d52;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --accent-blue: #38bdf8;
    --accent-green: #4ade80;
    --accent-purple: #c084fc;
    --accent-yellow: #facc15;
    --accent-red: #f87171;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text);
    padding: 24px;
    line-height: 1.5;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

header {
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
}

h1 {
    font-size: 2rem;
    color: var(--accent-blue);
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Control Bar */
.top-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.preset-group {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}

.btn-preset {
    flex: 1;
    padding: 10px;
    background: #24334a;
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-preset:hover {
    border-color: var(--accent-blue);
    background: #2d415e;
}

.total-amount {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-green);
    margin-top: 4px;
}

.action-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: flex-end;
}

.btn-action {
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--accent-blue);
    color: #0b0f19;
}

.btn-primary:hover {
    opacity: 0.9;
}

/* Matrix Table */
.matrix-container {
    overflow-x: auto;
    margin-bottom: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    position: relative;
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    min-width: 1200px;
}

.matrix-table th {
    background: var(--bg-header);
    padding: 16px;
    text-align: left;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
}

.matrix-table th.premium-header {
    color: var(--accent-purple);
    background: #231834;
    border-bottom-color: var(--accent-purple);
}

.matrix-table td {
    padding: 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.category-cell {
    width: 220px;
    background: rgba(255, 255, 255, 0.01);
}

.comments-cell {
    width: 280px;
    font-size: 0.82rem;
    color: var(--text-muted);
    background: rgba(15, 23, 42, 0.4);
    line-height: 1.4;
}

.category-name {
    font-weight: 700;
    font-size: 0.95rem;
    display: block;
    margin-top: 4px;
    margin-bottom: 4px;
}

.category-note {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* Option Cards */
.option-box {
    border: 2px solid var(--border);
    border-radius: 8px;
    padding: 12px;
    background: #101726;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.option-box:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.option-box.selected {
    border-color: var(--accent-blue);
    background: #13233a;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
}

.option-box.selected::before {
    content: "✓ SELECTED";
    position: absolute;
    top: -10px;
    right: 10px;
    background: var(--accent-blue);
    color: #000;
    font-size: 0.65rem;
    font-weight: 900;
    padding: 2px 6px;
    border-radius: 4px;
}

.new-only-tag {
    font-size: 0.65rem;
    font-weight: 900;
    color: var(--accent-purple);
    background: rgba(192, 132, 252, 0.15);
    border: 1px solid var(--accent-purple);
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 6px;
}

.merged-tag {
    font-size: 0.65rem;
    font-weight: 900;
    color: var(--accent-yellow);
    background: rgba(250, 204, 21, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 6px;
}

.part-name {
    font-weight: 700;
    font-size: 0.88rem;
    color: var(--text);
    margin-bottom: 4px;
}

.part-sku {
    font-family: monospace;
    font-size: 0.72rem;
    color: var(--accent-yellow);
    margin-bottom: 8px;
    display: block;
}

.part-price {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent-green);
    margin-bottom: 8px;
}

.link-btn {
    display: inline-block;
    padding: 6px 10px;
    background: #1e293b;
    color: var(--accent-blue);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.75rem;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
}

.link-btn:hover {
    background: var(--accent-blue);
    color: #000;
}

/* Hover Tooltip Popup */
.hover-card {
    position: fixed;
    width: 320px;
    background: #1e293b;
    border: 1px solid var(--accent-blue);
    border-radius: 8px;
    padding: 14px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.8);
    pointer-events: none;
    z-index: 2000;
    display: none;
    font-size: 0.8rem;
}

.hover-card h4 {
    color: var(--accent-blue);
    margin-bottom: 8px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
}

.hover-card div {
    margin-bottom: 6px;
}

.hover-card strong {
    color: var(--text);
}

/* Badges */
.badge {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
}
.badge-red { background: rgba(248, 113, 113, 0.2); color: var(--accent-red); }
.badge-orange { background: rgba(250, 204, 21, 0.2); color: var(--accent-yellow); }
.badge-gray { background: rgba(148, 163, 184, 0.2); color: var(--text-muted); }

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--accent-green);
    color: #000;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: bold;
    display: none;
    z-index: 1000;
}