:root {
    --bg-color: #f4f7f6;
    --text-color: #333;
    --primary-color: #2c3e50;
    --secondary-color: #18bc9c;
    --card-bg: #fff;
    --border-color: #ddd;
    --tag-bg: #e9ecef;
    --tag-text: #495057;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

header {
    background-color: var(--primary-color);
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav button {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    margin-left: 1rem;
    cursor: pointer;
    opacity: 0.7;
    padding: 0.5rem 0;
    transition: opacity 0.2s, border-bottom 0.2s;
}

nav button:hover {
    opacity: 1;
}

nav button.active {
    opacity: 1;
    border-bottom: 2px solid var(--secondary-color);
    font-weight: 600;
}

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.controls input, .controls select {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.controls input:focus, .controls select:focus {
    border-color: var(--secondary-color);
}

.controls input {
    flex: 1;
    min-width: 250px;
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.card {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 300px 360px 1fr;
    gap: 1.5rem;
    align-items: stretch;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card.peak-card {
    grid-template-columns: 300px 1fr;
}

@media (max-width: 900px) {
    .card, .card.peak-card {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.card-column {
    display: flex;
    flex-direction: column;
}

.card h2 {
    margin-top: 0;
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    line-height: 1.3;
}

.card .meta {
    font-size: 0.95rem;
    color: #666;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-item {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.meta-item i {
    margin-top: 0.2rem;
    width: 16px;
    text-align: center;
    color: var(--secondary-color);
}

.card .data-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    font-size: 0.95rem;
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 6px;
    height: 100%;
    align-content: start;
}

.card .data-grid div {
    display: flex;
    flex-direction: column;
}

.card .data-grid div strong {
    font-size: 0.75rem;
    color: #777;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.2rem;
}

.card .links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding-top: 1rem;
}

.card .links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    background: var(--bg-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    transition: background 0.2s, color 0.2s;
}

.card .links a:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.tags-container {
    margin-bottom: 0;
}

.party-tags, .peak-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.6rem;
}

.tag {
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 0.25rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 500;
}

.peak-tag {
    background: #e3f2fd;
    color: #1565c0;
}

.card-notes {
    font-size: 0.95rem;
    color: #555;
    margin-top: 0.5rem;
    margin-bottom: 0;
    font-style: italic;
    line-height: 1.5;
}

/* Statistics Table */
.stats-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    border-radius: 8px;
    overflow: hidden;
    white-space: nowrap;
}

.stats-table th, .stats-table td {
    padding: 0.8rem 1.2rem;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.stats-table th:first-child, .stats-table td:first-child {
    text-align: left;
    font-weight: 600;
    position: sticky;
    left: 0;
    background-color: var(--card-bg);
    z-index: 1;
}

.stats-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

.stats-table th:first-child {
    background-color: var(--primary-color);
}

.stats-table tr:hover td {
    background-color: #f8f9fa;
}

.stats-table tr:hover td:first-child {
    background-color: #f8f9fa;
}

.stats-year-head td {
    background-color: #e9ecef !important;
    text-align: left;
    color: var(--primary-color);
    font-weight: 700;
    padding-top: 1rem;
    padding-bottom: 0.5rem;
}