:root {
    --primary-color: #002855;
    --accent-color: #ffcd00;
    --success-color: #28a745;
    --background-color: #f8f9fa;
    --text-color: #333;
    --border-color: #dee2e6;
    --past-color: #6c757d;
    --today-color: #007bff;
    --future-color: #212529;
}

[data-theme="dark"] {
    --primary-color: #4a90e2;
    --accent-color: #ffcd00;
    --success-color: #4caf50;
    --background-color: #1e1e1e;
    --text-color: #e0e0e0;
    --border-color: #404040;
    --past-color: #999999;
    --today-color: #64b5f6;
    --future-color: #e0e0e0;
}

* {
    box-sizing: border-box;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    color: var(--primary-color);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

#blazor-error-ui {
    background: #fff3cd;
    color: #856404;
    padding: 1rem;
    text-align: center;
    display: none;
}

#blazor-error-ui.show,
#blazor-error-ui[style*="display: block"] {
    display: block;
}

#blazor-error-ui a {
    color: #856404;
    margin-left: 0.5rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    background: var(--primary-color);
    color: white;
    padding: 1.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
}

header h1 {
    margin: 0;
    font-size: 1.75rem;
    outline: none;
}

header p {
    margin: 0.5rem 0 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

.theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.theme-toggle-btn {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.state-selector,
.year-selector,
.export-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.state-selector label,
.year-selector label,
.export-menu label {
    font-weight: 500;
}

.state-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.state-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--background-color);
    color: var(--text-color);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.state-btn:hover {
    border-color: var(--primary-color);
    background: var(--border-color);
}

.state-btn.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.state-btn.selected:hover {
    opacity: 0.9;
}

.export-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--primary-color);
    background: var(--background-color);
    color: var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.export-btn:hover {
    background: var(--primary-color);
    color: white;
}

.export-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.holiday-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--background-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.holiday-table th,
.holiday-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.holiday-table th {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.holiday-table tbody tr:hover {
    background: var(--border-color);
}

.holiday-table tbody tr:last-child td {
    border-bottom: none;
}

.holiday-row.past {
    color: var(--past-color);
}

.holiday-row.today {
    background: rgba(100, 181, 246, 0.2);
    font-weight: 600;
}

.holiday-row.today td {
    color: var(--today-color);
}

.holiday-row.future {
    color: var(--future-color);
}

.holiday-table .date-column {
    white-space: nowrap;
    text-align: right;
}

.day-column {
    white-space: nowrap;
}

.state-badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    margin: 0.125rem 0.25rem 0.125rem 0;
    background: var(--accent-color);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--past-color);
}

.empty-state p {
    margin: 0;
    font-size: 1.1rem;
}

footer {
    text-align: center;
    padding: 0.5rem;
    color: var(--past-color);
    font-size: 0.875rem;
    margin-top: 0;
}

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

footer a:hover {
    text-decoration: underline;
}

.date-mobile {
    display: none;
}

@media (max-width: 768px) {
    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
    }

    header h1 {
        font-size: 1.25rem;
        text-align: left;
        flex: 1;
        margin-right: 0.5rem;
    }

    header p {
        display: none;
    }

    .theme-toggle {
        position: static;
        flex-shrink: 0;
    }

    .theme-toggle-btn {
        padding: 0.5rem;
        min-width: 36px;
    }

    .theme-toggle-btn .text {
        display: none;
    }

    .theme-toggle-btn .icon {
        font-size: 1.25rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .holiday-table {
        font-size: 0.875rem;
    }

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

    .date-desktop {
        display: none;
    }

    .date-mobile {
        display: inline;
    }

    .day-column {
        display: none;
    }
}
.holiday-logic-info {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    line-height: 1.6;
}

.collapse-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: calc(100% + 3rem);
    padding: 0.75rem 1.5rem;
    margin: 1.5rem -1.5rem 0 -1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
}

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

.holiday-logic-content {
    margin-top: 1rem;
}

.holiday-logic-info h2 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-color);
}

.holiday-logic-info h2:first-child {
    margin-top: 0;
}

.holiday-logic-info h3 {
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.holiday-logic-info h4 {
    color: var(--text-color);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.holiday-logic-info p {
    margin-bottom: 1rem;
}

.holiday-logic-info ul {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.holiday-logic-info li {
    margin-bottom: 0.5rem;
}

.holiday-logic-info a {
    color: var(--primary-color);
    text-decoration: none;
}

.holiday-logic-info a:hover {
    text-decoration: underline;
}

.holiday-logic-info strong {
    color: var(--primary-color);
}