/* ==========================================================================
   Alaia Balance Studio - Sistema de Diseño Premium, Juvenil y Minimalista (Móvil-Primero)
   ========================================================================== */

/* Variables de Diseño */
:root {
    --bg-color: #FAF8F5;
    --surface-color: #FFFFFF;
    --primary: #7FA99B;
    --primary-hover: #5B8375;
    --primary-light: #F1F6F4;
    --dark: #2B302E;
    --text-dark: #2B302E;
    --text-muted: #7A8481;
    --border-color: rgba(127, 169, 155, 0.15);
    --border-radius-lg: 20px;
    --border-radius-md: 14px;
    --border-radius-sm: 8px;
    --accent-lavender: #E4DFF2;
    --accent-lavender-dark: #8E80B2;
    --danger: #E09F9F;
    --danger-dark: #C27070;
    --success: #99C199;
    --success-dark: #558E55;
    --warning: #F5D399;
    --warning-dark: #C4984F;
    --shadow-sm: 0 4px 12px rgba(43, 48, 46, 0.03);
    --shadow-md: 0 10px 24px rgba(43, 48, 46, 0.06);
    --shadow-lg: 0 20px 40px rgba(43, 48, 46, 0.09);
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --font-titles: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
}

/* Reset y Estilos Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background-color: #ECEAE6; /* Color de fondo exterior en desktop */
    color: var(--text-dark);
    line-height: 1.5;
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

/* Contenedor tipo App Móvil */
.app-container {
    width: 100%;
    max-width: 480px; /* Tamaño máximo para simular celular en desktop */
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.08);
    padding-bottom: 90px; /* Espacio para la barra de navegación inferior */
}

/* Para pantallas completas sin bottom nav (ej. Login/Registro) */
.app-container.no-nav {
    padding-bottom: 0;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-titles);
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

a:hover {
    color: var(--primary-hover);
}

/* Componentes de Encabezado */
.app-header {
    padding: 12px 20px;
    background-color: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-top {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
    min-height: 40px;
}

.brand-logo {
    display: block;
    width: 100%;
    text-align: center;
}

.brand-logo-img {
    height: 75px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin: 0 auto;
    display: block;
}

.brand-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    border-radius: 50%;
    display: inline-block;
}

.user-avatar {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-lavender);
    color: var(--accent-lavender-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--font-titles);
    font-size: 0.95rem;
    border: 2px solid var(--surface-color);
    box-shadow: var(--shadow-sm);
}

/* Barra de Navegación Inferior (Estilo App) */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    height: 76px;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 999;
    padding: 0 10px 10px 10px; /* Margen inferior para ergonomía móvil */
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    gap: 4px;
    width: 64px;
    height: 100%;
    padding-top: 8px;
    transition: var(--transition);
}

.nav-item svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    transition: var(--transition);
}

.nav-item.active {
    color: var(--primary);
}

.nav-item.active svg {
    stroke: var(--primary);
    transform: translateY(-2px);
}

/* Tarjetas y Contenedores */
.content-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Calendario Agenda Visual */
.calendar-slider {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 4px 4px 12px 4px;
    scrollbar-width: none; /* Ocultar en Firefox */
}

.calendar-slider::-webkit-scrollbar {
    display: none; /* Ocultar en Chrome/Safari */
}

.calendar-day {
    flex: 0 0 calc((100% - 40px) / 5); /* Muestra 5 días a la vez */
    scroll-snap-align: start;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.calendar-day.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--surface-color);
    box-shadow: 0 6px 15px rgba(127, 169, 155, 0.35);
}

.calendar-day .day-num {
    font-family: var(--font-titles);
    font-size: 1.3rem;
    font-weight: 700;
}

.calendar-day .day-name {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    opacity: 0.8;
}

/* Listado de Sesiones */
.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.session-card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.session-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background-color: var(--primary);
}

.session-card.full::before {
    background-color: var(--text-muted);
}

.session-card.booked::before {
    background-color: var(--success);
}

.session-time-block {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-time {
    font-family: var(--font-titles);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--dark);
}

.session-duration {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.session-info {
    flex-grow: 1;
    padding: 0 16px;
}

.session-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--dark);
    margin-bottom: 2px;
}

.session-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.session-instructor {
    font-weight: 600;
}

.session-capacity {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    max-width: 120px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.capacity-bar {
    flex-grow: 1;
    height: 4px;
    background-color: rgba(44, 53, 49, 0.06);
    border-radius: 2px;
    overflow: hidden;
}

.capacity-fill {
    height: 100%;
    background-color: var(--primary);
    border-radius: 2px;
}

.capacity-fill.danger {
    background-color: var(--danger);
}

/* Botones */
.btn {
    font-family: var(--font-titles);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--surface-color);
    box-shadow: 0 4px 12px rgba(127, 169, 155, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--primary-light);
    color: var(--primary-hover);
    border: 1px solid rgba(127, 169, 155, 0.25);
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

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

.btn-danger {
    background-color: var(--danger);
    color: white;
    box-shadow: 0 4px 12px rgba(224, 159, 159, 0.2);
}

.btn-danger:hover {
    background-color: var(--danger-dark);
}

.btn-sm {
    padding: 8px 12px;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    background-color: #E2E4E3;
    color: #A6A9A7;
    cursor: not-allowed;
    box-shadow: none;
    border-color: transparent;
}

/* Formularios Modernos */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
    width: 100%;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-dark);
}

.form-control {
    font-family: var(--font-body);
    font-size: 0.95rem;
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-dark);
    outline: none;
    transition: var(--transition);
    width: 100%;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(127, 169, 155, 0.15);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%232B302E' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19.5 8.25l-7.5 7.5-7.5-7.5' /%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 40px;
}

/* Pantallas Especiales (Login/Registro) */
.auth-wrapper {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 30px 20px;
    background: radial-gradient(circle at 10% 20%, rgba(228, 223, 242, 0.4) 0%, rgba(241, 246, 244, 0.4) 90%), var(--bg-color);
}

.auth-card {
    width: 100%;
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 30px 24px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.auth-header {
    text-align: center;
    margin-bottom: 24px;
}

.auth-logo {
    font-family: var(--font-titles);
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.auth-logo-img {
    height: 120px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    margin: 0 auto;
    display: block;
}

.auth-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Alertas */
.alert {
    padding: 12px 16px;
    border-radius: var(--border-radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-danger {
    background-color: rgba(224, 159, 159, 0.12);
    color: var(--danger-dark);
    border: 1px solid rgba(224, 159, 159, 0.2);
}

.alert-success {
    background-color: rgba(153, 193, 153, 0.12);
    color: var(--success-dark);
    border: 1px solid rgba(153, 193, 153, 0.2);
}

/* Badges / Etiquetas */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-primary {
    background-color: var(--primary-light);
    color: var(--primary-hover);
}

.badge-success {
    background-color: rgba(153, 193, 153, 0.15);
    color: var(--success-dark);
}

.badge-danger {
    background-color: rgba(224, 159, 159, 0.15);
    color: var(--danger-dark);
}

.badge-warning {
    background-color: rgba(245, 211, 153, 0.15);
    color: var(--warning-dark);
}

/* Listado de Métricas Dashboard */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.metric-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px;
    text-align: left;
}

.metric-value {
    font-family: var(--font-titles);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.2;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 600;
}

/* Panel de Administración */
.admin-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
    background-color: var(--surface-color);
}

.admin-table th {
    background-color: var(--primary-light);
    color: var(--primary-hover);
    padding: 12px 14px;
    font-weight: 700;
}

.admin-table td {
    padding: 12px 14px;
    border-top: 1px solid var(--border-color);
    color: var(--text-dark);
}

.admin-table tr:hover {
    background-color: rgba(127, 169, 155, 0.02);
}

/* Secciones de compra de paquetes */
.packages-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.package-card {
    background-color: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    text-align: left;
    position: relative;
    transition: var(--transition);
}

.package-card.featured {
    border-color: var(--primary);
}

.package-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background-color: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 700;
}

.package-name {
    font-family: var(--font-titles);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.package-price {
    font-family: var(--font-titles);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-hover);
    margin-bottom: 12px;
}

.package-price span {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.package-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.package-features {
    list-style: none;
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.package-features li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.package-features li::before {
    content: "✓";
    color: var(--primary);
    font-weight: bold;
}

/* Modal Popup minimalista */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(43, 48, 46, 0.4);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: flex-end; /* Abre desde abajo en móviles */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background-color: var(--bg-color);
    width: 100%;
    max-width: 480px;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 24px;
    transform: translateY(100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.08);
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

/* Historial de Reservas */
.booking-history-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

/* Estilos de Avatares e Imágenes de Instructores */
.instructor-avatar-sm,
.instructor-avatar-md,
.instructor-avatar-lg,
.instructor-avatar-admin {
    border-radius: 50%;
    object-fit: cover;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary-hover);
    background-color: var(--primary-light);
    flex-shrink: 0;
    transition: var(--transition);
}

.instructor-avatar-sm {
    width: 50px;
    height: 50px;
    border: 1.5px solid var(--border-color);
    font-size: 1.2rem;
}

.instructor-avatar-md {
    width: 72px;
    height: 72px;
    border: 2px solid var(--primary-light);
    box-shadow: var(--shadow-sm);
    font-size: 1.6rem;
}

.instructor-avatar-lg {
    width: 120px;
    height: 120px;
    border: 3px solid var(--primary-light);
    box-shadow: var(--shadow-md);
    font-size: 2.5rem;
}

.instructor-avatar-admin {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.instructor-clickable {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.instructor-clickable:hover .instructor-avatar-sm {
    transform: scale(1.05);
    border-color: var(--primary);
}

.instructor-clickable:hover .session-instructor {
    color: var(--primary) !important;
}

.instructor-avatar-container {
    display: flex;
    align-items: center;
    gap: 8px;
}