/* Court Booking App - Modern Minimal UI */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --text-primary: #e8e8ec;
    --text-secondary: #9898a4;
    --text-muted: #6a6a78;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --border: #2a2a38;
    --font-main: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
}

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

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.app {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
    padding-bottom: 32px;
}

/* Header */
.header {
    text-align: center;
    padding: 24px 0 20px;
}

.header h1 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.tab {
    flex: 1;
    padding: 10px 12px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

.tab.active {
    background: var(--accent);
    color: white;
}

/* Views */
.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.view-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.btn-refresh {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    transition: all 0.2s;
}

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

/* Cards Container */
.cards-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.loading, .empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

/* Card */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
}

.card-badge {
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 6px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.badge-pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.badge-error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.card-details {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.card-detail {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.detail-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 14px;
    color: var(--text-primary);
}

.card-error {
    margin-top: 12px;
    padding: 10px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 8px;
    font-size: 13px;
    color: var(--error);
    font-family: var(--font-mono);
}

.card-actions {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.btn-cancel {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--error);
    color: var(--error);
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-cancel:hover {
    background: var(--error);
    color: white;
}

.btn-clear {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    margin-left: 8px;
}

.btn-clear:hover {
    border-color: var(--error);
    color: var(--error);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Form */
.form {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group select,
.form-group input {
    width: 100%;
    padding: 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: var(--font-main);
    transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group select option {
    background: var(--bg-secondary);
}

/* Date picker icon - make it visible on dark background */
.form-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
    cursor: pointer;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator:hover {
    filter: invert(1);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: white;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Result Message */
.result-message {
    margin-top: 16px;
    padding: 14px;
    border-radius: 8px;
    font-size: 14px;
    display: none;
}

.result-message.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

.result-message.success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.result-message.error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.result-message.info {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

/* Responsive */
@media (max-width: 480px) {
    .app {
        padding: 12px;
    }
    
    .header h1 {
        font-size: 24px;
    }
    
    .tab {
        padding: 8px 6px;
        font-size: 13px;
    }
    
    .card-details {
        gap: 12px;
    }
    
    .card-detail {
        min-width: 45%;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}