[data-theme="light"] {
    --positive-color: #16a34a;
    --negative-color: #dc2626;
    --muted-color: #6b7280;
    --alert-error-bg: #fef2f2;
    --alert-error-border: #fecaca;
    --alert-error-color: #991b1b;
    --alert-success-bg: #f0fdf4;
    --alert-success-border: #bbf7d0;
    --alert-success-color: #166534;
    --badge-buy-bg: #dbeafe;
    --badge-buy-color: #1e40af;
    --badge-sell-bg: #fef3c7;
    --badge-sell-color: #92400e;
    --badge-yes-bg: #dcfce7;
    --badge-yes-color: #166534;
    --badge-no-bg: #fef2f2;
    --badge-no-color: #991b1b;
}

[data-theme="dark"] {
    --positive-color: #4ade80;
    --negative-color: #f87171;
    --muted-color: #9ca3af;
    --alert-error-bg: #1c1111;
    --alert-error-border: #7f1d1d;
    --alert-error-color: #fca5a5;
    --alert-success-bg: #0c1f13;
    --alert-success-border: #14532d;
    --alert-success-color: #86efac;
    --badge-buy-bg: #1e3a5f;
    --badge-buy-color: #93c5fd;
    --badge-sell-bg: #422006;
    --badge-sell-color: #fcd34d;
    --badge-yes-bg: #14332a;
    --badge-yes-color: #86efac;
    --badge-no-bg: #2d1515;
    --badge-no-color: #fca5a5;
}

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

nav .brand { font-weight: 700; font-size: 1.2rem; }
.price-yes { color: var(--positive-color); font-weight: 600; }
.price-no { color: var(--negative-color); font-weight: 600; }

.market-card {
    border: 1px solid var(--pico-muted-border-color);
    border-radius: var(--pico-border-radius);
    padding: 1rem;
    margin-bottom: 0.75rem;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: border-color 0.2s;
}
.market-card:hover {
    border-color: var(--pico-primary);
}
.market-card h4 { margin-bottom: 0.5rem; }
.market-card .prices {
    display: flex;
    gap: 1.5rem;
    font-size: 1.1rem;
}
.market-card .meta {
    font-size: 0.85rem;
    color: var(--muted-color);
    margin-top: 0.5rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.stat-card {
    background: var(--pico-card-background-color);
    border: 1px solid var(--pico-muted-border-color);
    border-radius: var(--pico-border-radius);
    padding: 1rem;
}
.stat-card .label { font-size: 0.85rem; color: var(--muted-color); margin-bottom: 0.25rem; }
.stat-card .value { font-size: 1.5rem; font-weight: 700; }

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--pico-border-radius);
    margin-bottom: 1rem;
}
.alert-error { background: var(--alert-error-bg); border: 1px solid var(--alert-error-border); color: var(--alert-error-color); }
.alert-success { background: var(--alert-success-bg); border: 1px solid var(--alert-success-border); color: var(--alert-success-color); }

.trade-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.trade-form .full-width { grid-column: 1 / -1; }

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-buy { background: var(--badge-buy-bg); color: var(--badge-buy-color); }
.badge-sell { background: var(--badge-sell-bg); color: var(--badge-sell-color); }
.badge-yes { background: var(--badge-yes-bg); color: var(--badge-yes-color); }
.badge-no { background: var(--badge-no-bg); color: var(--badge-no-color); }

#theme-toggle {
    cursor: pointer;
    font-size: 1.1rem;
    text-decoration: none;
}