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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    background: #050508;
    color: #E5E7EB;
    min-height: 100vh;
    padding: 20px;
    font-size: 0.875rem;
    line-height: 1.5;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 32px;
    padding: 24px 0;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #F3F4F6;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 1rem;
    color: #6B7280;
    font-weight: 400;
}

/* Top 3 Cards */
.top-pairs-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.top-pair-card {
    background: rgba(15, 17, 23, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px 24px;
    position: relative;
    transition: all 0.2s ease;
}

.top-pair-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(15, 17, 23, 0.8);
}

.card-rank {
    position: absolute;
    top: 12px;
    right: 16px;
    color: #6B7280;
    font-size: 0.875rem;
    font-weight: 600;
}

.card-ticker {
    font-size: 1.5rem;
    font-weight: 700;
    color: #F3F4F6;
    margin-bottom: 4px;
    text-align: center;
}

.card-score {
    font-size: 2.5rem;
    font-weight: 700;
    color: #22C55E;
    margin-bottom: 16px;
    margin-top: -2px;
    text-align: center;
    line-height: 1.1;
}

.card-apr {
    font-size: 0.8rem;
    color: #9CA3AF;
    margin-bottom: 12px;
    text-align: center;
}

.card-details {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.detail-item {
    font-size: 0.75rem;
    color: #9CA3AF;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 4px;
}

/* Controls Row */
.controls-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

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

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

.search-input {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    color: #E5E7EB;
    font-size: 0.85rem;
    width: 200px;
    transition: all 0.2s ease;
}

.search-input::placeholder {
    color: #6B7280;
}

.search-input:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(255, 255, 255, 0.08);
}

.control-btn {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: #9CA3AF;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.control-btn:hover {
    border-color: rgba(255, 255, 255, 0.25);
    color: #E5E7EB;
    background: rgba(255, 255, 255, 0.08);
}

.refresh-btn {
    padding: 8px 12px;
}

/* Weight Controls */
.weight-controls {
    background: rgba(15, 17, 23, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
}

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

.weight-controls h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: #E5E7EB;
    margin: 0;
}

.weight-total {
    font-size: 0.8rem;
    color: #9CA3AF;
}

.weight-total strong {
    color: #22C55E;
    font-weight: 700;
}

.weight-sliders {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 16px;
}

.weight-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.weight-item label {
    font-size: 0.8rem;
    color: #9CA3AF;
    font-weight: 500;
}

.weight-item input[type="range"] {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
}

.weight-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: #3B82F6;
    border-radius: 50%;
    cursor: pointer;
}

.weight-item span {
    font-size: 1rem;
    font-weight: 700;
    color: #3B82F6;
    text-align: center;
}

.apply-btn {
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg, #3B82F6, #8B5CF6);
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Table */
.table-container {
    background: rgba(15, 17, 23, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    overflow: hidden;
}

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

thead {
    background: rgba(15, 17, 23, 0.8);
}

th {
    padding: 14px 16px;
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #9CA3AF;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    white-space: nowrap;
}

th.sortable {
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

th.sortable:hover {
    color: #E5E7EB;
}

th.sortable.sort-asc::after {
    content: ' ↑';
    color: #3B82F6;
}

th.sortable.sort-desc::after {
    content: ' ↓';
    color: #3B82F6;
}

td {
    padding: 14px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Rank Column */
.rank-cell {
    font-size: 1rem;
    font-weight: 700;
    color: #6B7280;
}

.rank-cell.rank-1 { color: #FFD700; }
.rank-cell.rank-2 { color: #C0C0C0; }
.rank-cell.rank-3 { color: #CD7F32; }

/* Ticker Column */
.ticker-cell {
    font-size: 1.1rem;
    font-weight: 700;
    color: #F3F4F6;
}

/* Volume Column */
.volume-cell {
    font-size: 0.85rem;
    color: #D1D5DB;
}

/* OI Column - Long / Short */
.oi-cell {
    font-size: 0.85rem;
}

.oi-values {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.oi-long {
    color: #22C55E;
    font-weight: 600;
}

.oi-short {
    color: #EF4444;
    font-weight: 600;
}

.oi-separator {
    color: #6B7280;
}

/* Spread Column */
.spread-cell {
    font-size: 0.85rem;
    font-weight: 600;
}

.spread-cell.spread-low {
    color: #22C55E;
}

.spread-cell.spread-medium {
    color: #FB923C;
}

.spread-cell.spread-high {
    color: #EF4444;
}

/* Long/Short Ratio */
.ratio-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.ratio-bar {
    width: 80px;
    height: 6px;
    background: #EF4444;
    border-radius: 3px;
    overflow: hidden;
}

.ratio-bar-fill {
    height: 100%;
    background: #22C55E;
}

.ratio-text {
    font-size: 0.75rem;
    color: #9CA3AF;
}

/* Funding Rate */
.funding-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.funding-rate {
    font-size: 0.95rem;
    font-weight: 600;
}

.funding-rate.positive { color: #22C55E; }
.funding-rate.negative { color: #EF4444; }

.funding-apr {
    font-size: 0.7rem;
    color: #6B7280;
}

/* Score Column */
.score-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.score-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: #22C55E;
}

.score-bar {
    width: 60px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #3B82F6, #22C55E);
}

/* Loading */
.full-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #050508;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.3s ease-out;
}

.full-loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(59, 130, 246, 0.2);
    border-top-color: #3B82F6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.loading-content p {
    font-size: 0.875rem;
    color: #9CA3AF;
}

/* Error Message */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 14px;
    color: #EF4444;
    margin-top: 16px;
    text-align: center;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .top-pairs-container {
        grid-template-columns: 1fr;
    }
    
    .weight-sliders {
        grid-template-columns: 1fr;
    }
    
    .controls-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stats-info {
        justify-content: center;
    }
    
    .controls-right {
        justify-content: center;
    }
    
    .search-input {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    body {
        padding: 12px;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 700px;
    }
}