/* ── Reset & Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #0d0d1a;
    --bg-secondary: #14142b;
    --bg-card: #1a1a3a;
    --bg-hover: #222255;
    --border: #2a2a5a;
    --border-light: #3a3a6a;
    --text-primary: #e8e4f0;
    --text-secondary: #9890b8;
    --text-muted: #6a6490;
    --accent: #a78bfa;
    --accent-dim: #7c5fbf;
    --green: #34d399;
    --green-dim: #1a8a5a;
    --red: #f87171;
    --red-dim: #b04040;
    --yellow: #fbbf24;
    --blue: #60a5fa;
    --orange: #fb923c;
    --chain-mainnet: #627eea;
    --chain-base: #0052ff;
    --chain-arbitrum: #2d374b;
    --chain-optimism: #ff0420;
    --chain-polygon: #8247e5;
    --chain-bnb: #f0b90b;
}

html {
    font-size: 14px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    text-decoration: underline;
}

/* ── Header ── */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.header-inner {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
    line-height: 1;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.header-stats {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.stat-badge {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.stat-badge.accent {
    border-color: var(--accent-dim);
    color: var(--accent);
}

/* ── Filters ── */
.filters {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 2rem;
}

.filters-row {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group.narrow {
    min-width: 140px;
}

.filter-group.narrow.right {
    margin-left: auto;
}

.filter-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

/* Chain checkboxes */
.chain-checkboxes {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.chain-chip {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.7rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.78rem;
    color: var(--text-secondary);
    transition: all 0.2s;
    user-select: none;
}

.chain-chip:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.chain-chip input {
    display: none;
}

.chain-chip:has(input:checked) {
    background: rgba(167, 139, 250, 0.1);
    border-color: var(--accent-dim);
    color: var(--accent);
}

/* Stablecoins toggle */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
    background: rgba(167, 139, 250, 0.2);
    border-color: var(--accent);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: var(--accent);
}

/* Range slider */
.range-slider {
    -webkit-appearance: none;
    width: 140px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    outline: none;
    transition: background 0.2s;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    transition: all 0.15s;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

/* Refresh button */
.btn-refresh {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.82rem;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-refresh:hover {
    background: var(--bg-hover);
    border-color: var(--accent-dim);
    color: var(--accent);
}

.btn-refresh:active {
    transform: scale(0.96);
}

#refreshIcon.spinning {
    animation: spin 0.8s ease-in-out infinite;
}

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

/* ── Controls Bar ── */
.controls-bar {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-count {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.sort-indicator {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ── Table ── */
.table-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2rem 2rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.positions-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.positions-table thead {
    background: var(--bg-secondary);
}

.positions-table th {
    padding: 0.7rem 0.8rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    transition: color 0.15s;
    position: relative;
}

.positions-table th:hover {
    color: var(--text-secondary);
}

.positions-table th.sort-asc::after,
.positions-table th.sort-desc::after {
    content: attr(data-sort-arrow);
    margin-left: 3px;
    font-size: 0.65rem;
    display: inline-block;
}

.positions-table th.sort-desc::after {
    content: '▼';
    color: var(--accent);
}

.positions-table th.sort-asc::after {
    content: '▲';
    color: var(--accent);
}

.positions-table td {
    padding: 0.65rem 0.8rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    color: var(--text-primary);
}

.positions-table tbody tr {
    transition: background 0.15s;
}

.positions-table tbody tr:hover {
    background: var(--bg-hover);
}

.positions-table tbody tr:nth-child(even) {
    background: rgba(255,255,255,0.015);
}

.positions-table tbody tr:nth-child(even):hover {
    background: var(--bg-hover);
}

/* ── Column widths ── */
.col-pair { min-width: 110px; }
.col-chain { width: 50px; }
.col-exch { width: 40px; }
.col-fee { width: 55px; text-align: right; }
.col-range { min-width: 70px; }
.col-price-range { min-width: 130px; }
.col-apr { width: 70px; text-align: right; }
.col-fee-apr { width: 70px; text-align: right; }
.col-tvl { width: 100px; text-align: right; }
.col-pnl { width: 90px; text-align: right; }
.col-roi { width: 60px; text-align: right; }
.col-age { width: 50px; text-align: right; }
.col-inrange { width: 30px; text-align: center; }

.col-apr,
.col-fee-apr,
.col-tvl,
.col-pnl,
.col-roi,
.col-age {
    text-align: right;
}

.col-inrange {
    text-align: center;
}

/* ── Cell styling ── */
.pair-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.pair-link:hover {
    text-decoration: underline;
    color: #c4b0ff;
}

.chain-badge {
    display: inline-block;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.chain-badge.mainnet { background: rgba(98, 126, 234, 0.15); color: #627eea; }
.chain-badge.base { background: rgba(0, 82, 255, 0.15); color: #4a8aff; }
.chain-badge.arbitrum { background: rgba(45, 55, 75, 0.3); color: #8a9ac0; }
.chain-badge.optimism { background: rgba(255, 4, 32, 0.15); color: #ff5050; }
.chain-badge.polygon { background: rgba(130, 71, 229, 0.15); color: #a472f0; }
.chain-badge.bnb { background: rgba(240, 185, 11, 0.15); color: #f0b90b; }

.exch-badge {
    display: inline-block;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.68rem;
    font-weight: 600;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.fee-cell {
    font-family: 'SF Mono', 'Cascadia Code', monospace;
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-align: right;
}

.range-cell {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.price-range-cell {
    font-size: 0.72rem;
    color: var(--text-secondary);
    font-family: 'SF Mono', 'Cascadia Code', monospace;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.value-positive {
    color: var(--green);
}

.value-negative {
    color: var(--red);
}

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

.in-range-true {
    color: var(--green);
    font-weight: 700;
}

.in-range-false {
    color: var(--red-dim);
    font-weight: 700;
}

/* ── Loading ── */
.loading-row td {
    text-align: center;
    padding: 4rem 2rem;
}

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    color: var(--text-muted);
}

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ── Footer ── */
.footer {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem 2rem 2.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

.footer .sep {
    color: var(--border-light);
}

/* ── Empty state ── */
.empty-row td {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
}

/* ── Responsive ── */
/* No columns are hidden on small screens — table scrolls horizontally */
@media (max-width: 1100px) {
    .positions-table { min-width: 1050px; }
}

@media (max-width: 900px) {
    .header { padding: 0.75rem 1rem; }
    .filters { padding: 0.75rem 1rem; }
    .controls-bar { padding: 0.75rem 1rem; }
    .table-container { padding: 0 1rem 1rem; }
    .footer { padding: 1rem; }

    .filters-row {
        gap: 1rem;
    }

    .filter-group.narrow {
        min-width: 100px;
    }

    .range-slider {
        width: 100px;
    }

    .positions-table {
        font-size: 0.75rem;
        min-width: 1050px;
    }

    .positions-table th,
    .positions-table td {
        padding: 0.5rem 0.5rem;
    }
}

@media (max-width: 600px) {
    .positions-table { min-width: 1050px; }
    .stat-badge { font-size: 0.7rem; padding: 0.25rem 0.6rem; }
}

/* ── Tooltip / price range popup ── */
.range-cell {
    position: relative;
    cursor: help;
    border-bottom: 1px dashed var(--border-light);
}

.range-cell[data-price]::after {
    content: attr(data-price);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    font-size: 0.7rem;
    color: var(--text-secondary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s;
    z-index: 10;
}

.range-cell:hover::after {
    opacity: 1;
}