:root {
    --primary: #2ecc71;       /* Verde Padel */
    --primary-dark: #27ae60;
    --dark: #2c3e50;          /* Gris Oscuro */
    --light: #ecf0f1;
    --white: #ffffff;
    --danger: #e74c3c;
    --font-main: 'Inter', sans-serif;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --radius: 8px;
}

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

body {
    font-family: var(--font-main);
    background-color: #f4f7f6;
    color: var(--dark);
    line-height: 1.6;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
}

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

h1, h2 { margin-bottom: 1.5rem; color: var(--dark); font-weight: 700; }
h1 { text-align: center; }

/* Form Elements */
.form-group { margin-bottom: 1.2rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 600; font-size: 0.9rem; }

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border 0.3s;
}

input:focus, select:focus {
    border-color: var(--primary);
    outline: none;
}

button {
    width: 100%;
    padding: 14px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover { background-color: var(--primary-dark); }

/* Table Styles */
.table-responsive { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid #eee; }
th { background-color: var(--dark); color: var(--white); }
tr:hover { background-color: #f9f9f9; }

/* Utils */
.btn-danger { background-color: var(--danger); width: auto; padding: 8px 16px; font-size: 0.85rem; }
.btn-danger:hover { background-color: #c0392b; }
.alert { padding: 15px; border-radius: var(--radius); margin-bottom: 1rem; text-align: center; }
.alert-success { background: #d4edda; color: #155724; }
.alert-error { background: #f8d7da; color: #721c24; }

/* Mobile First adjustments */
@media (max-width: 600px) {
    .container { margin: 10px auto; padding: 10px; }
    .card { padding: 1.5rem; }
    th, td { font-size: 0.9rem; padding: 8px; }
}

/* Estilos específicos para el comprobante */
.comprobante-reserva {
    max-width: 600px;
    margin: 0 auto 25px auto;
}

@media print {
    /* Ocultar elementos no necesarios al imprimir */
    body * {
        visibility: hidden;
    }
    
    .comprobante-reserva, .comprobante-reserva * {
        visibility: visible;
    }
    
    .comprobante-reserva {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        background: #fff !important;
        border: 2px solid #000 !important;
    }
    
    /* Ocultar botones al imprimir */
    .comprobante-reserva button,
    .comprobante-reserva a[href^="https://wa.me"] {
        display: none !important;
    }
    
    /* Ajustar colores para impresión */
    .comprobante-reserva {
        background: #fff !important;
        color: #000 !important;
    }
}

/* Animación de entrada */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* === Admin Panel Styles === */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
    margin-bottom: 25px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.stat-card {
    background: #fff;
    padding: 15px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    border-left: 4px solid var(--primary);
}

.stat-card.warning { border-left-color: var(--warning); }
.stat-card.success { border-left-color: var(--success); }

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark);
    margin: 5px 0;
}

.stat-label {
    font-size: 0.85rem;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
}

.tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-weight: 600;
    color: #666;
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-btn .badge {
    background: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.75rem;
    margin-left: 5px;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pendiente { background: #fff3cd; color: #856404; }
.badge-pagado { background: #d4edda; color: #155724; }
.badge-cerrado { background: #e2e3e5; color: #383d41; }

.action-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.btn-action {
    padding: 6px 12px;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.btn-pagar { background: #fff; color: var(--warning); border: 1px solid var(--warning); }
.btn-pagar:hover, .btn-pagar.paid { background: var(--warning); color: #fff; }

.btn-cerrar { background: #fff; color: var(--success); border: 1px solid var(--success); }
.btn-cerrar:hover { background: var(--success); color: #fff; }

.btn-eliminar { background: #fff; color: var(--danger); border: 1px solid var(--danger); }
.btn-eliminar:hover { background: var(--danger); color: #fff; }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

@media (max-width: 768px) {
    .admin-header { flex-direction: column; align-items: flex-start; gap: 15px; }
    .action-buttons { flex-direction: column; }
    .btn-action { width: 100%; justify-content: center; }
}