/* ========================================
   VARIABLES Y RESET
======================================== */
:root {
    /* Colores Profesionales Rediseñados */
    --primary: #1e3a8a;        /* Azul marino profundo */
    --secondary: #0891b2;      /* Cyan profesional */
    --accent: #f59e0b;         /* Naranja cálido */
    --success: #10B981;        /* Verde éxito */
    --dark: #1f2937;           /* Gris oscuro */
    --gray: #6b7280;           /* Gris medio */
    --white: #ffffff;
    --bg-light: #f9fafb;       /* Fondo claro neutro */
    --bg-medium: #e5e7eb;      /* Fondo medio */
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--bg-light);
    margin: 0;
    padding: 0;
}

/* Page Wrapper para layout sticky footer */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.page-wrapper > header {
    flex-shrink: 0;
}

.page-wrapper > section,
.page-wrapper > div {
    flex: 1 0 auto;
}

.page-wrapper > footer {
    flex-shrink: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* ========================================
   HEADER
======================================== */
header {
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--space-sm) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.85;
}

.logo-img {
    width: 55px;
    height: 55px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    transition: transform 0.3s ease;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.brand-name {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark);
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.brand-name .highlight {
    color: var(--primary);
}

.brand-tagline {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: -2px;
    line-height: 1.4;
    color: var(--dark);
}

nav {
    display: flex;
    gap: var(--space-lg);
}

nav a {
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    padding: var(--space-xs) 0;
    min-height: 44px;
    display: flex;
    align-items: center;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

nav a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
}

/* ========================================
   FOOTER
======================================== */
footer {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #d1d5db;
    padding: var(--space-xl) 0 var(--space-lg);
    margin-top: var(--space-2xl);
    border-top: 3px solid var(--primary);
}

.footer-minimal {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-brand {
    font-size: 1.5rem;
    line-height: 1.2;
}

.footer-brand strong {
    color: #e2e8f0;
    font-weight: 700;
}

.footer-brand span {
    color: var(--primary);
}

.footer-url {
    color: #94a3b8;
    font-size: 1.1rem;
    margin: 0;
}

.footer-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin: var(--space-sm) 0;
}

.footer-nav a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.footer-nav a:hover {
    color: var(--accent);
}

.footer-nav .separator {
    color: #64748b;
    font-size: 0.8rem;
}

.footer-copyright {
    color: #64748b;
    font-size: 0.85rem;
}

/* ========================================
   SECCIONES COMUNES
======================================== */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: var(--space-xs);
    font-weight: 800;
    line-height: 1.2;
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    margin-bottom: var(--space-xl);
    font-size: 1.1rem;
}

.page-header {
    background: linear-gradient(135deg, var(--primary), #2563eb);
    color: white;
    padding: 2.5rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
    line-height: 1.2;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* ========================================
   BOTONES
======================================== */
.btn {
    padding: 0.7rem var(--space-sm);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    text-decoration: none;
    min-height: 44px;
}

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

.btn-primary:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

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

.btn-secondary:hover {
    background: #0e7490;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.3);
}

/* ========================================
   FORMULARIOS
======================================== */
.form-container {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    max-width: 650px;
    margin: 0 auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-family: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.btn-submit {
    width: 100%;
    padding: var(--space-sm);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 50px;
}

.btn-submit:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.3);
}

/* ========================================
   LOADING Y ESTADOS VACÍOS
======================================== */
.loading {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--gray);
}

.loading i {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray);
    margin-bottom: var(--space-sm);
}

.empty-state h3 {
    color: var(--dark);
    margin-bottom: var(--space-xs);
}

.empty-state p {
    color: var(--gray);
}

/* ========================================
   BOTÓN VOLVER ARRIBA
======================================== */
#backToTop {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--primary);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    z-index: 90;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#backToTop:hover {
    background: #1e40af;
    transform: translateY(-4px);
}
/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 768px) {
    :root {
        --space-md: var(--space-sm);
        --space-xl: var(--space-lg);
        --space-2xl: var(--space-xl);
    }
    
    header {
        position: sticky;
        z-index: 100;
    }
    
    .menu-toggle {
        display: flex;
        position: relative;
        z-index: 102;
        transition: background 0.3s;
    }
    
    /* Botón blanco cuando el menú está activo */
    .menu-toggle.active {
        color: white !important;
    }
    
    nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(30, 58, 138, 0.98) 0%, rgba(15, 23, 42, 0.98) 100%);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        z-index: 101;
        overflow-y: auto;
        gap: 0;
    }
    
    nav.active {
        display: flex !important;
        animation: fadeIn 0.3s ease;
    }
    
    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }
    
    nav a {
        padding: 1.25rem;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        background: rgba(255,255,255,0.08);
        border-radius: 8px;
        color: white;
        font-size: 1.1rem;
        text-align: center;
        margin-bottom: 0.5rem;
    }
    
    nav a:hover {
        background: rgba(255,255,255,0.15);
        color: white;
    }
    
    nav a::after {
        display: none;
    }
    
    /* Logo en el espacio inferior del menú */
    nav::after {
        content: '';
        display: block;
        width: 120px;
        height: 120px;
        margin: 2rem auto 0;
        background: url('/assets/images/logos/logo-circulo-blanco.png') center/contain no-repeat;
        opacity: 0.4;
        flex-shrink: 0;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 var(--space-sm);
    }
    
    .form-container {
        padding: var(--space-md);
    }
    
    .footer-nav {
        display: none;
    }
    
    .footer-brand {
        font-size: 1.2rem;
    }
    
    .footer-minimal {
        padding: 0 var(--space-sm);
        gap: var(--space-sm);
    }
    
    .footer-url {
        margin: var(--space-sm) 0;
    }
    
    /* Botón volver arriba ajustado en móvil */
    #backToTop {
        bottom: 85px; /* Encima del botón de filtros */
        right: 20px;
        width: 48px;
        height: 48px;
        z-index: 89;
    }
    
    /* Si está en página de alojamientos, ajustar para stack vertical */
    body:has(.mobile-filters-toggle) #backToTop {
        bottom: 95px; /* Más arriba porque hay botón de filtros abajo */
    }
}

.desktop-only {
    display: block;
}

@media (max-width: 1024px) {
    .desktop-only {
        display: none;
    }
}