/* ===== VARIABLES CSS ===== */
:root {
    /* Nueva paleta minimalista */
    --primary-color: #3b82f6;        /* Azul principal más suave */
    --primary-light: #60a5fa;        /* Azul claro */
    --primary-dark: #1d4ed8;         /* Azul oscuro */
    --secondary-color: #f1f5f9;      /* Gris azulado muy claro */
    --accent-color: #06b6d4;         /* Cyan como acento */
    
    /* Colores neutros minimalistas */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Colores de superficie minimalistas */
    --surface-primary: #ffffff;
    --surface-secondary: #f8fafc;
    --surface-tertiary: #f1f5f9;
    
    /* Tipografía mejorada */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Line heights optimizados */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* Letter spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0em;
    --letter-spacing-wide: 0.025em;
    
    /* Espaciado mejorado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 5rem;
    
    /* Sombras mejoradas */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transiciones */
    --transition: all 0.3s ease;
}

/* ===== RESET Y BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
    letter-spacing: var(--letter-spacing-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Tipografía mejorada */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
}

h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

h3 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
}

h4 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

p {
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-md);
    color: var(--gray-600);
}

.lead {
    font-size: var(--font-size-xl);
    line-height: var(--line-height-relaxed);
    color: var(--gray-600);
    font-weight: 400;
}

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

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--surface-secondary) 0%, var(--primary-light) 20%, var(--primary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

/* Dos capas de fondo para rotación con fade y blur */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    filter: blur(9px) saturate(1.05) brightness(0.9);
    will-change: opacity, transform, filter;
    transform: scale(1);
    z-index: 0;
}

/* Asignación dinámica desde JS vía variables CSS */
.hero::before { background-image: var(--hero-bg-a); }
.hero::after  { background-image: var(--hero-bg-b); }

/* Mostrar capa activa y aplicar zoom sutil */
.hero.bg-show-a::before { opacity: 1; animation: heroZoom 5s ease-in-out forwards; }
.hero.bg-show-a::after  { opacity: 0; }
.hero.bg-show-b::before { opacity: 0; }
.hero.bg-show-b::after  { opacity: 1; animation: heroZoom 5s ease-in-out forwards; }

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.05); }
}

/* Overlay degradado azul 60–70% para legibilidad */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    background: linear-gradient(135deg,
        rgba(79, 70, 229, 0.7) 0%,
        rgba(59, 130, 246, 0.65) 50%,
        rgba(124, 58, 237, 0.6) 100%
    );
}

/* Partículas sutiles usando pseudo-elemento del overlay */
.hero-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.4;
    background-image:
        radial-gradient(6px 6px at 20% 80%, rgba(255,255,255,0.6), transparent 60%),
        radial-gradient(5px 5px at 40% 90%, rgba(255,255,255,0.5), transparent 60%),
        radial-gradient(7px 7px at 60% 85%, rgba(255,255,255,0.5), transparent 60%),
        radial-gradient(6px 6px at 80% 95%, rgba(255,255,255,0.5), transparent 60%),
        radial-gradient(5px 5px at 30% 60%, rgba(255,255,255,0.5), transparent 60%),
        radial-gradient(6px 6px at 70% 70%, rgba(255,255,255,0.5), transparent 60%);
    background-repeat: no-repeat;
    animation: particlesFloat 25s linear infinite;
}

@keyframes particlesFloat {
    0%   { transform: translateY(0); }
    100% { transform: translateY(-80px); }
}

/* Onda inferior como SVG embebido, responsiva */
.hero-overlay::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -1px;
    height: 100px;
    background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120' preserveAspectRatio='none'><path d='M0,64 C240,96 480,0 720,48 C960,96 1200,32 1440,64 L1440,120 L0,120 Z' fill='white'/></svg>") bottom center / 100% 100% no-repeat;
    pointer-events: none;
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
    animation: fadeInUp 1s ease-out;
}

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

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
    font-weight: 400;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.4);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button {
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.cta-button:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
    transform: translateY(-100%);
}

.navbar.visible {
    transform: translateY(0);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo .logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* ===== SECTIONS ===== */
.packages, .extras {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-tight);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* ===== PREVIEW SECTIONS STYLES ===== */
.packages-preview, .extras-preview {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.view-all-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.view-all-btn i {
    transition: var(--transition);
}

.view-all-btn:hover i {
    transform: translateX(4px);
}

/* ===== PAGE HEADER STYLES ===== */
.page-header {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    text-align: center;
}

.breadcrumb {
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.breadcrumb a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    opacity: 0.8;
}

.separator {
    margin: 0 var(--spacing-sm);
    opacity: 0.6;
}

.current {
    opacity: 0.7;
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.page-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== FULL PAGE SECTIONS ===== */
.packages-full, .extras-full {
    padding: var(--spacing-3xl) 0;
    min-height: 60vh;
}

/* ===== CONTROLS STYLES (Branch-inspired) ===== */
.packages-controls, .extras-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.filter-options {
    display: flex;
    gap: var(--spacing-sm);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

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

.sort-select {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--white);
    color: var(--gray-700);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
}

.sort-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ===== FULL GRID STYLES ===== */
.full-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--gray-500);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

/* ===== NAVBAR FIXED STATE ===== */
.navbar.fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.navbar.fixed .nav-logo span,
.navbar.fixed .nav-menu a {
    color: var(--gray-800);
}

.navbar.fixed .nav-menu a.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* ===== EXTRAS SUMMARY ===== */
.extras-summary {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 320px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    z-index: 100;
}

.extras-summary .summary-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.extras-summary .summary-content {
    padding: var(--spacing-lg);
}

.selected-extras-list {
    margin-bottom: var(--spacing-lg);
}

.summary-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.continue-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-100);
    color: var(--gray-700);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: var(--transition);
}

.continue-btn:hover {
    background: var(--gray-200);
}

/* ===== PACKAGES GRID ===== */
.packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.package-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid transparent;
    overflow: hidden;
}

.package-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.package-card:hover::before {
    transform: scaleX(1);
}

.package-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.package-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), 0 20px 40px rgba(37, 99, 235, 0.2);
    transform: translateY(-8px);
}

.package-card.featured {
    border-color: var(--accent-color);
    position: relative;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: translateX(-50%) scale(1); }
    50% { transform: translateX(-50%) scale(1.05); }
}

.package-image {
    width: 100%;
    height: 200px;
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gray-50);
}

.package-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
}

.package-card:hover .package-image img {
    transform: scale(1.05);
}

.package-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.package-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.package-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
}

.currency {
    font-size: var(--font-size-xl);
    color: var(--gray-500);
}

.amount {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--primary-color);
}

.package-features ul {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.package-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--gray-600);
}

.package-features i {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
}

.select-package-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.select-package-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.select-package-btn:hover::before {
    left: 100%;
}

.select-package-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.package-card.selected .select-package-btn {
    background: linear-gradient(135deg, var(--accent-color) 0%, #ea580c 100%);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

/* ===== EXTRAS GRID ===== */
.extras {
    background: var(--gray-50);
}

.extras-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.extra-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid transparent;
    overflow: hidden;
    text-align: center;
}

.extra-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.extra-card:hover::before {
    transform: scaleX(1);
}

.extra-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.extra-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), 0 20px 40px rgba(37, 99, 235, 0.2);
    transform: translateY(-8px);
}

.extra-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
    font-size: var(--font-size-xl);
}

.extra-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.extra-description {
    color: var(--gray-500);
    margin-bottom: var(--spacing-lg);
}

.extra-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

/* Extras image container (match package styling) */
.extra-image {
    width: 100%;
    height: 200px; /* same as .package-image */
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--gray-50);
}

.extra-image img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* Cambiado de 'cover' a 'contain' para mostrar imagen completa */
    object-position: center;
    transition: var(--transition);
    padding: var(--spacing-sm); /* Pequeño padding para que no toque los bordes */
}

.extra-card:hover .extra-image img {
    transform: scale(1.08); /* Aumentado ligeramente el zoom */
}

/* Badge de múltiples imágenes */
.images-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    backdrop-filter: blur(4px);
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 4px;
}

.images-badge::before {
    content: '📷';
    font-size: 14px;
}

.extra-image {
    position: relative;
}

/* ===== CHECKBOX PERSONALIZADO (estilo botón, igual a 'Seleccionar Paquete') ===== */
.extra-checkbox {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: 600;
    width: 100%;
    padding: var(--spacing-lg);
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
}

.extra-checkbox::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.extra-checkbox:hover::before { left: 100%; }
.extra-checkbox:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4); }

.extra-checkbox input { display: none; }

/* Ocultar check cuadrado; usamos cambio de color del botón al seleccionar */
.checkmark { display: none; }

/* Estado seleccionado (requiere soporte de :has, disponible en Chrome/Edge/Safari modernos) */
.extra-checkbox:has(input:checked) {
    background: linear-gradient(135deg, var(--accent-color) 0%, #ea580c 100%);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

/* ===== ORDER SUMMARY ===== */
.order-summary {
    position: fixed;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 320px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    z-index: 100;
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-50%) translateX(100%);
}

.order-summary.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.summary-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
}

.close-summary {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.close-summary:hover {
    color: var(--gray-600);
    background: var(--gray-100);
}

.summary-content {
    padding: var(--spacing-lg);
}

.selected-package {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.package-name {
    font-weight: 600;
    color: var(--gray-900);
}

.package-price {
    font-weight: 700;
    color: var(--primary-color);
}

.selected-extras {
    margin-bottom: var(--spacing-lg);
}

.extra-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.summary-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--gray-200);
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.total-label {
    color: var(--gray-900);
}

.total-amount {
    color: var(--primary-color);
}

.order-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.order-btn:hover:not(:disabled) {
    background: #1d4ed8;
}

.order-btn:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-900);
}

.close-modal {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--gray-600);
    background: var(--gray-100);
}

.contact-form {
    padding: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

/* Mejoras visuales para selects */
.form-group select {
    width: 100%;
    min-height: 44px;
    padding: var(--spacing-md);
    padding-right: 42px; /* espacio para el ícono */
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background-color: var(--white);
    font-size: var(--font-size-base);
    color: var(--gray-700);
    line-height: 1.2;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2364748b'%3E%3Cpath d='M7 10l5 5 5-5H7z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px 16px;
}

.form-group select:hover {
    border-color: var(--gray-300);
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.form-group select:disabled {
    background-color: var(--gray-100);
    color: var(--gray-500);
    cursor: not-allowed;
}

/* Estado de error para selects */
.form-group select.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: #25d366;
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.submit-btn:hover {
    background: #128c7e;
}

/* ===== WHATSAPP FLOAT ===== */
/* ===== FLOATING ELEMENTS ===== */
.floating-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    animation: float-around 20s infinite linear;
}

.floating-shape.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-duration: 25s;
    animation-delay: 0s;
}

.floating-shape.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-duration: 30s;
    animation-delay: -5s;
}

.floating-shape.shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-duration: 35s;
    animation-delay: -10s;
}

.floating-shape.shape-4 {
    width: 100px;
    height: 100px;
    top: 40%;
    right: 30%;
    animation-duration: 28s;
    animation-delay: -15s;
}

@keyframes float-around {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(-20px, 20px) rotate(180deg); }
    75% { transform: translate(-30px, -20px) rotate(270deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

/* ===== WHATSAPP BUTTON ENHANCEMENT ===== */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-md);
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: var(--font-size-xl);
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(37, 211, 102, 0.6);
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    right: 75px;
}

@keyframes pulse-whatsapp {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* ===== ESTILOS PARA FORMULARIOS AVANZADOS ===== */

/* Mensajes de error */
.error-message {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
    animation: fadeInUp 0.3s ease;
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--error-color);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Modal de preview */
.preview-modal {
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.preview-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.preview-section:last-child {
    border-bottom: none;
}

.preview-section h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.preview-section p {
    margin: 0.25rem 0;
    color: var(--text-color);
}

.total-section {
    background: var(--accent-color);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: none !important;
}

.total-section h4 {
    color: white;
    margin: 0;
    font-size: 1.3rem;
}

.preview-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition);
}

.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

/* Notificaciones */
.success-notification,
.error-notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    z-index: 10000;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease;
    max-width: 400px;
}

.success-notification {
    background: #10b981;
    color: white;
}

.error-notification {
    background: var(--error-color);
    color: white;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notification-icon {
    font-size: 1.2rem;
}

/* Animaciones */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Responsive para notificaciones */
@media (max-width: 768px) {
    .success-notification,
    .error-notification {
        top: 1rem;
        right: 1rem;
        left: 1rem;
        max-width: none;
    }
    
    .preview-actions {
        flex-direction: column;
    }
    
    .preview-modal {
        margin: 1rem;
        max-height: 90vh;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--white);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.footer-logo .logo-img {
    height: 35px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1); /* Hace el logo blanco */
    transition: var(--transition);
}

.footer-logo .logo-img:hover {
    transform: scale(1.05);
    filter: brightness(0) invert(1) drop-shadow(0 0 10px rgba(255,255,255,0.3));
}

.footer-section p {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    color: var(--gray-400);
}

/* ===== TABS DE MODALIDAD (LICENCIATURA/MAESTRÍA) ===== */
.tabs {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.tab-btn {
    position: relative;
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--gray-600);
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

.tab-btn:hover::before {
    left: 100%;
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.tab-btn.active::after {
    content: '✓';
    margin-left: var(--spacing-sm);
    font-weight: bold;
}

.tab-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* Responsive para tabs */
@media (max-width: 768px) {
    .tabs {
        gap: var(--spacing-sm);
    }
    
    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}