:root {
    --azul-celeste: #00bcd4;
    --azul-oscuro: #0097a7;
    --verde-claro: #8bc34a;
    --verde-oscuro: #7cb342;
    --blanco: #ffffff;
    --gris-claro: #f5f7f9;
    --gris-medio: #e8eef2;
    --gris-oscuro: #757575;
    --texto: #424242;
    --borde: #bdbdbd;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    background: var(--gris-claro);
    color: var(--texto);
}

.site-header {
    background: linear-gradient(135deg, var(--azul-celeste) 0%, var(--verde-claro) 100%);
    color: var(--blanco);
    padding: 32px 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin-bottom: 24px;
}

.site-header h1 {
    margin: 0 0 4px 0;
    font-size: 32px;
    font-weight: 700;
}

.site-header small {
    display: block;
    opacity: 0.95;
    font-size: 14px;
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 16px;
}

.card {
    background: var(--blanco);
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: 24px;
    border: 1px solid var(--gris-medio);
}

.card h2 {
    color: var(--azul-oscuro);
    margin-bottom: 16px;
    font-size: 24px;
    border-bottom: 3px solid var(--verde-claro);
    padding-bottom: 12px;
}

.btn {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 6px;
    background: var(--azul-celeste);
    color: var(--blanco);
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.btn:hover {
    background: var(--azul-oscuro);
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 188, 212, 0.2);
}

.btn[style*="background:var(--verde-claro)"] {
    background: var(--verde-claro) !important;
}

.btn[style*="background:var(--verde-claro)"]:hover {
    background: var(--verde-oscuro) !important;
    box-shadow: 0 4px 12px rgba(139, 195, 74, 0.3);
}

/* Formularios */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gris-medio);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: var(--blanco);
    margin-bottom: 12px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="date"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--azul-celeste);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--texto);
    font-size: 14px;
}

/* Tablas */
table.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    background: var(--blanco);
}

table.table thead {
    background: linear-gradient(90deg, var(--azul-celeste) 0%, #00acc1 100%);
    color: var(--blanco);
}

table.table th {
    padding: 14px 12px;
    text-align: left;
    font-weight: 600;
    border: none;
}

table.table td {
    padding: 12px;
    border-bottom: 1px solid var(--gris-medio);
}

table.table tbody tr:hover {
    background: var(--gris-claro);
}

table.table a {
    color: var(--azul-celeste);
    text-decoration: none;
    font-weight: 600;
}

table.table a:hover {
    text-decoration: underline;
    color: var(--azul-oscuro);
}

/* Agenda: bloques 15min */
.agenda-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.slot {
    background: var(--blanco);
    padding: 12px;
    border: 2px solid var(--verde-claro);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slot.free {
    border-color: var(--verde-claro);
    color: var(--texto);
}

.slot.free:hover {
    background: rgba(139, 195, 74, 0.1);
    border-color: var(--verde-oscuro);
    box-shadow: 0 4px 12px rgba(139, 195, 74, 0.2);
    transform: translateY(-2px);
}

.slot.booked {
    background: #fce4ec;
    border-color: #e91e63;
    color: #c2185b;
}

.slot-time {
    font-weight: 700;
    font-size: 15px;
    margin-bottom: 6px;
}

.slot-booked {
    font-size: 12px;
    opacity: 0.8;
}

/* Miniaturas para imágenes */
.thumb {
    max-width: 150px;
    max-height: 150px;
    border-radius: 8px;
    border: 2px solid var(--verde-claro);
    display: inline-block;
    margin: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.thumb:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.thumb-list {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 12px;
}

/* Modal */
.modal {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--blanco);
    padding: 28px;
    border-radius: 12px;
    width: 520px;
    max-width: 95%;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h3 {
    color: var(--azul-oscuro);
    margin-bottom: 20px;
    font-size: 20px;
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--azul-celeste) 0%, var(--verde-claro) 100%);
    color: var(--blanco);
    text-align: center;
    padding: 24px;
    margin-top: 48px;
}

footer p {
    margin: 0;
    font-size: 14px;
}

.suggestions {
    background: var(--blanco);
    border: 1px solid var(--gris-medio);
    max-height: 280px;
    overflow: auto;
    margin-top: 8px;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.suggest-item {
    padding: 12px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid var(--gris-medio);
}

.suggest-item:last-child {
    border-bottom: none;
}

.suggest-item:hover {
    background: var(--gris-claro);
    color: var(--azul-celeste);
}

/* Select2 customización */
.select2-container--default .select2-selection--single {
    border: 1px solid var(--gris-medio) !important;
    border-radius: 6px !important;
    height: auto !important;
    padding: 6px 12px !important;
}

.select2-container--default .select2-selection--single:focus {
    border-color: var(--azul-celeste) !important;
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1) !important;
}

.select2-dropdown {
    border-radius: 6px !important;
    margin-top: 4px !important;
}

/* Mensajes y validación */
.alert {
    padding: 14px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    border-left: 4px solid;
}

.alert-info {
    background: #e1f5fe;
    border-left-color: var(--azul-celeste);
    color: #00838f;
}

.alert-success {
    background: #e8f5e9;
    border-left-color: var(--verde-claro);
    color: #2e7d32;
}

.alert-warning {
    background: #fff3e0;
    border-left-color: #ff9800;
    color: #e65100;
}

.alert-danger {
    background: #ffebee;
    border-left-color: #f44336;
    color: #c62828;
}

/* Grid layout helpers */
div[style*="display:flex"] {
    gap: 12px;
}

/* Links */
a {
    color: var(--azul-celeste);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--azul-oscuro);
    text-decoration: underline;
}

/* Títulos */
h2, h3, h4, h5, h6 {
    color: var(--azul-oscuro);
    margin-bottom: 12px;
}

/* Espaciado */
p {
    margin-bottom: 12px;
}

small {
    font-size: 12px;
    color: var(--gris-oscuro);
}