:root {
    --base03: #002b36;
    --base02: #073642;
    --base01: #586e75;
    --base00: #657b83;
    --base0:  #839496;
    --base1:  #93a1a1;
    --base2:  #eee8d5;
    --base3:  #fdf6e3;
    --yellow: #b58900;
    --orange: #cb4b16;
    --red:    #dc322f;
    --blue:   #268bd2;
    --cyan:   #2aa198;
    --green:  #859900;
    --violet: #6c71c4;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--base03);
    color: var(--base0);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px 40px;
    width: 100%;
}

/* Header */
.site-header {
    text-align: center;
    padding: 32px 20px 16px;
}

.site-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--base1);
    letter-spacing: -0.5px;
}

.site-title span {
    color: var(--cyan);
}

.site-subtitle {
    font-size: 15px;
    color: var(--base01);
    margin-top: 4px;
}

/* Navigation */
.site-nav {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 16px;
}

.nav-link {
    color: var(--base01);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 16px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--base1);
    background: var(--base02);
}

.nav-link.active {
    color: var(--cyan);
    background: var(--base02);
    font-weight: 600;
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--base02);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

.stat-value {
    font-size: 1.8em;
    font-weight: 700;
    color: var(--cyan);
}

.stat-label {
    font-size: 0.8em;
    color: var(--base01);
    margin-top: 2px;
}

/* Charts */
.chart-section {
    margin-bottom: 24px;
}

.chart-section h2 {
    color: var(--base1);
    font-size: 1em;
    font-weight: 600;
    margin-bottom: 8px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.chart-header h2 {
    margin-bottom: 0;
}

.chart-wrap {
    background: var(--base02);
    border-radius: 8px;
    padding: 16px;
}

.main-chart {
    height: 300px;
}

.main-chart canvas {
    height: 100% !important;
}

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.charts-grid .chart-wrap {
    height: 300px;
}

.charts-grid .chart-wrap canvas {
    height: 100% !important;
}

.donut-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Range Buttons */
.range-buttons {
    display: flex;
    gap: 4px;
}

.range-btn {
    background: var(--base02);
    border: 1px solid var(--base01);
    color: var(--base01);
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.range-btn:hover {
    color: var(--base1);
    border-color: var(--base1);
}

.range-btn.active {
    background: var(--cyan);
    color: var(--base03);
    border-color: var(--cyan);
    font-weight: 600;
}

/* Search */
.search-wrap {
    max-width: 600px;
    margin: 0 auto 32px;
    position: relative;
}

.search-input {
    width: 100%;
    background: var(--base02);
    border: 2px solid var(--base01);
    color: var(--base1);
    font-size: 18px;
    padding: 14px 18px;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s;
}

.search-input::placeholder {
    color: var(--base01);
}

.search-input:focus {
    border-color: var(--cyan);
}

/* Filters row */
.search-filters {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.state-select {
    background: var(--base02);
    border: 1px solid var(--base01);
    color: var(--base1);
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 6px;
    outline: none;
    cursor: pointer;
    flex: 1;
}

.state-select:focus {
    border-color: var(--cyan);
}

.near-me-btn {
    background: var(--base02);
    border: 1px solid var(--base01);
    color: var(--base1);
    font-size: 14px;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    white-space: nowrap;
    transition: border-color 0.2s, color 0.2s;
}

.near-me-btn:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.near-me-btn:disabled {
    opacity: 0.6;
    cursor: wait;
}

/* Callsign copy */
.callsign-copy {
    cursor: pointer;
    transition: color 0.2s;
}

.callsign-copy:hover {
    color: var(--blue);
}

.callsign-copy.copied {
    color: var(--green);
}

.search-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
    font-size: 12px;
    color: var(--base01);
    padding: 0 4px;
}

/* Results */
.results-wrap {
    flex: 1;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th {
    text-align: left;
    padding: 8px 10px;
    color: var(--base01);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--base02);
    white-space: nowrap;
}

td {
    padding: 7px 10px;
    border-bottom: 1px solid var(--base02);
}

tr:hover {
    background: rgba(7, 54, 66, 0.5);
}

.mono {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 13px;
    color: var(--cyan);
    font-weight: 500;
}

.empty-msg {
    text-align: center;
    color: var(--base01);
    font-style: italic;
    padding: 40px 20px;
}

.hint {
    text-align: center;
    color: var(--base01);
    padding: 40px 20px;
    font-size: 14px;
}

/* Amazon ads */
.ad-row {
    display: flex;
    gap: 12px;
    margin: 24px auto;
    max-width: 700px;
}

.ad-card {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    background: var(--base02);
    border: 1px solid var(--base01);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
    min-width: 0;
}

.ad-card:hover {
    border-color: var(--blue);
}

.ad-card:hover .ad-icon {
    color: var(--blue);
}

.ad-card:hover .ad-title {
    color: var(--blue);
}

.ad-icon {
    font-size: 1.75rem;
    color: var(--base01);
    flex-shrink: 0;
    width: 3rem;
    text-align: center;
}

.ad-body {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 0;
}

.ad-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--base1);
    line-height: 1.3;
}

.ad-meta {
    font-size: 0.8rem;
    color: var(--base01);
}

.ad-label {
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.5px;
}

/* CTCSS Page */
.ctcss-controls {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.ctcss-controls select {
    background: var(--base02);
    border: 1px solid var(--base01);
    color: var(--base1);
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 6px;
    outline: none;
    cursor: pointer;
    flex: 1;
    min-width: 200px;
}

.ctcss-controls select:focus {
    border-color: var(--cyan);
}

.ctcss-table {
    width: 100%;
}

.ctcss-table th {
    position: sticky;
    top: 0;
    background: var(--base03);
}

.ctcss-note {
    color: var(--base01);
    font-size: 13px;
    margin-bottom: 16px;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 32px 20px;
    font-size: 12px;
    color: var(--base01);
}

.site-footer a {
    color: var(--base01);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--base0);
}

.disclosure {
    font-size: 11px;
    color: var(--base01);
    text-align: center;
    margin-top: 4px;
}

@media (max-width: 600px) {
    .site-header { padding: 24px 16px 12px; }
    .site-title { font-size: 28px; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-value { font-size: 1.4em; }
    .charts-grid { grid-template-columns: 1fr; }
    .search-input { font-size: 16px; padding: 12px 14px; }
    table { font-size: 13px; }
    td, th { padding: 6px 6px; }
    .ad-row { flex-direction: column; }
    .ad-card { padding: 1rem 1.25rem; }
    .ad-icon { font-size: 1.25rem; width: 2rem; }
    .ad-title { font-size: 0.9rem; }
    .search-filters { flex-direction: row; }
    .state-select { font-size: 13px; padding: 6px 8px; }
    .near-me-btn { font-size: 13px; padding: 6px 12px; }
    .main-chart { height: 220px; }
    .range-buttons { flex-wrap: wrap; }
    .ctcss-controls { flex-direction: column; }
    .ctcss-controls select { min-width: unset; }
}