/* =============================================
   LLM San Luis - Design System & Styles
   ============================================= */

/* CSS Variables */
:root {
    /* Colors - Based on logo */
    --color-primary: #0a1628;
    --color-primary-light: #132035;
    --color-primary-dark: #050c16;
    --color-accent: #c5a55a;
    --color-accent-light: #d4b86f;
    --color-accent-dark: #a88d45;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 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;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --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);
    --shadow-glow: 0 0 40px rgba(197, 165, 90, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-header: 100;
    --z-chat: 200;
    --z-modal: 300;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-600);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* =============================================
   Video Modal
   ============================================= */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.85);
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.video-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.video-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.video-modal__container {
    position: relative;
    width: 50%;
    max-width: 500px;
    z-index: 10;
}

.video-modal__video {
    width: 100%;
    max-height: 50vh;
    display: block;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(197, 165, 90, 0.3);
    background: #000;
}

.video-modal__close {
    position: absolute;
    top: -50px;
    right: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 9999px;
    color: white;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-modal__close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.video-modal__close svg {
    width: 18px;
    height: 18px;
}

/* =============================================
   Image Lightbox Modal
   ============================================= */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.85);
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.image-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.image-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.image-modal__container {
    position: relative;
    width: 50%;
    max-width: 500px;
    z-index: 10;
}

.image-modal__image {
    width: 100%;
    max-height: 50vh;
    display: block;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(197, 165, 90, 0.3);
    background: #000;
    object-fit: contain;
}

.image-modal__close {
    position: absolute;
    top: -50px;
    right: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 9999px;
    color: white;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-modal__close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.image-modal__close svg {
    width: 18px;
    height: 18px;
}

/* Clickable images */
.clickable-image {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.clickable-image:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(197, 165, 90, 0.4);
}

/* =============================================
   Header & Navigation
   ============================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    padding: var(--spacing-4) 0;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(197, 165, 90, 0.1);
    transition: var(--transition-base);
}

.header.scrolled {
    padding: var(--spacing-3) 0;
    background: rgba(10, 22, 40, 0.98);
}

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

.nav__logo-img {
    height: 70px;
    width: auto;
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 10px rgba(197, 165, 90, 0.3);
    transition: var(--transition-base);
}

.nav__logo-img:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(197, 165, 90, 0.4);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav__link {
    color: var(--color-gray-300);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-base);
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.nav__toggle-line {
    width: 24px;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-base);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero__particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(197, 165, 90, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(197, 165, 90, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(197, 165, 90, 0.05) 0%, transparent 30%);
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 650px;
    padding: var(--spacing-12) 0;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(197, 165, 90, 0.1);
    border: 1px solid rgba(197, 165, 90, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 0.6s ease;
}

.hero__badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero__title-gradient {
    display: block;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-8);
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.hero__image {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 50%;
    overflow: hidden;
}

.hero__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero__image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--color-primary) 0%, transparent 100%);
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
    text-decoration: none;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 60px rgba(197, 165, 90, 0.4);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn--full {
    width: 100%;
}

.btn__icon {
    width: 18px;
    height: 18px;
}

/* =============================================
   Section Styles
   ============================================= */
.section__header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-16);
}

.section__tag {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(197, 165, 90, 0.1);
    color: var(--color-accent-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section__title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
}

.section__description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
}

/* =============================================
   Services Section
   ============================================= */
.services {
    padding: var(--spacing-24) 0;
    background: var(--color-gray-50);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
}

.service-card {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.service-card--featured {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border: 1px solid rgba(197, 165, 90, 0.3);
}

.service-card--featured .service-card__description,
.service-card--featured .service-card__features li {
    color: var(--color-gray-200);
}

.service-card--featured .service-card__title {
    color: var(--color-white);
}

.service-card--featured .service-card__icon {
    background: rgba(197, 165, 90, 0.2);
    color: var(--color-accent);
}

.service-card__badge {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    padding: var(--spacing-1) var(--spacing-3);
    background: var(--color-accent);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.service-card__icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(197, 165, 90, 0.1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-6);
}

.service-card__icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-accent);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-4);
}

.service-card__description {
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.service-card__features {
    list-style: none;
}

.service-card__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-3);
}

.service-card__features li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: rgba(197, 165, 90, 0.2);
    color: var(--color-accent-dark);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.service-card--featured .service-card__features li::before {
    background: rgba(197, 165, 90, 0.3);
    color: var(--color-accent);
}

.service-card__location {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-100);
    color: var(--color-accent-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.service-card__location svg {
    width: 18px;
    height: 18px;
}

/* =============================================
   About Section
   ============================================= */
.about {
    padding: var(--spacing-24) 0;
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
    margin-bottom: var(--spacing-20);
}

.about__content .section__tag,
.about__content .section__title {
    text-align: left;
}

.about__text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-8);
    line-height: 1.8;
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: var(--spacing-2);
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.about__image {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.about__image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(197, 165, 90, 0.2) 0%, transparent 50%);
    z-index: 1;
}

.about__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team {
    display: flex;
    justify-content: center;
}

.team__card {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    max-width: 700px;
    box-shadow: var(--shadow-2xl);
}

.team__image {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 3px solid var(--color-accent);
}

.team__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team__name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-1);
}

.team__role {
    display: inline-block;
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.team__bio {
    color: var(--color-gray-300);
    line-height: 1.7;
}

/* =============================================
   Seminarios Section
   ============================================= */
.seminarios {
    padding: var(--spacing-24) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.seminarios .section__tag {
    background: rgba(197, 165, 90, 0.2);
    color: var(--color-accent);
}

.seminarios .section__title {
    color: var(--color-white);
}

.seminarios .section__description {
    color: var(--color-gray-300);
}

.seminarios__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.seminario-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base);
}

.seminario-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.seminario-card__image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.seminario-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.seminario-card:hover .seminario-card__image img {
    transform: scale(1.05);
}

.seminario-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 22, 40, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
    cursor: pointer;
}

.seminario-card__image:hover .seminario-card__overlay {
    opacity: 1;
}

.seminario-card__overlay-text {
    color: var(--color-accent);
    font-size: var(--font-size-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.seminario-card__content {
    padding: var(--spacing-6);
}

.seminario-card__date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(197, 165, 90, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-accent-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
}

.seminario-card__date svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
}

.seminario-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-3);
    line-height: 1.3;
}

.seminario-card__description {
    color: var(--color-gray-500);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* =============================================
   Contact Section
   ============================================= */
.contact {
    padding: var(--spacing-24) 0;
    background: var(--color-gray-50);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-16);
    align-items: start;
}

.contact__text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-8);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.contact__info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--color-gray-600);
}

.contact__info-item svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

/* Form Styles */
.contact__form {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-10);
    box-shadow: var(--shadow-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5);
}

.form__group {
    margin-bottom: 0;
}

.form__group:nth-child(5),
.form__group:nth-child(6),
.contact__form button {
    grid-column: span 2;
}

.form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-2);
}

.form__input {
    width: 100%;
    padding: var(--spacing-4);
    font-size: var(--font-size-base);
    font-family: inherit;
    color: var(--color-primary);
    background: var(--color-gray-50);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(197, 165, 90, 0.1);
}

.form__select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 20px;
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

/* =============================================
   Publicidad Section
   ============================================= */
.publicidad {
    padding: var(--spacing-24) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.publicidad .section__tag {
    background: rgba(197, 165, 90, 0.2);
    color: var(--color-accent);
}

.publicidad .section__title {
    color: var(--color-white);
}

.publicidad .section__description {
    color: var(--color-gray-300);
}

.publicidad__content {
    display: flex;
    justify-content: center;
}

.publicidad__play-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-white);
    font-family: inherit;
    font-size: var(--font-size-lg);
    font-weight: 600;
    transition: var(--transition-base);
}

.publicidad__play-btn:hover {
    transform: scale(1.05);
}

.publicidad__play-icon {
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    box-shadow: 0 0 40px rgba(197, 165, 90, 0.5);
    animation: pulseGlow 2s infinite;
}

.publicidad__play-btn:hover .publicidad__play-icon {
    box-shadow: 0 0 60px rgba(197, 165, 90, 0.7);
}

.publicidad__play-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
    margin-left: 5px;
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 40px rgba(197, 165, 90, 0.5);
    }

    50% {
        box-shadow: 0 0 60px rgba(197, 165, 90, 0.7);
    }
}

/* Publicidad Modal */
.publicidad-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.9);
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.publicidad-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.publicidad-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.publicidad-modal__container {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 400px;
}

.publicidad-modal__video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 9/16;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(197, 165, 90, 0.3);
}

.publicidad-modal__video-wrapper iframe {
    width: 100%;
    height: 100%;
}

.publicidad-modal__close {
    position: absolute;
    top: -50px;
    right: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 9999px;
    color: white;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.publicidad-modal__close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.publicidad-modal__close svg {
    width: 18px;
    height: 18px;
}

/* =============================================
   Use Cases Video Modal
   ============================================= */
.usecases-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.9);
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.usecases-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.usecases-modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.usecases-modal__container {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 900px;
}

.usecases-modal__video-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(197, 165, 90, 0.3);
}

.usecases-modal__video-wrapper iframe {
    width: 100%;
    height: 100%;
}

.usecases-modal__close {
    position: absolute;
    top: -50px;
    right: 0;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 9999px;
    color: white;
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
}

.usecases-modal__close:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.usecases-modal__close svg {
    width: 18px;
    height: 18px;
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--color-primary);
    color: var(--color-gray-400);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-12);
    margin-bottom: var(--spacing-12);
}

.footer__logo {
    height: 60px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-4);
}

.footer__tagline {
    max-width: 300px;
    line-height: 1.7;
}

.footer__title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-4);
}

.footer__links a,
.footer__services a {
    display: block;
    color: var(--color-gray-400);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-3);
    transition: var(--transition-fast);
}

.footer__links a:hover,
.footer__services a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    padding-top: var(--spacing-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: var(--font-size-sm);
}

/* =============================================
   Chat Widget
   ============================================= */
.chat-widget {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    z-index: var(--z-chat);
}

.chat-widget__toggle {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    position: relative;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transition: var(--transition-base);
    overflow: hidden;
}

.chat-widget__toggle:hover {
    transform: scale(1.1);
}

.chat-widget__avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-widget__pulse {
    position: absolute;
    inset: -4px;
    border: 3px solid var(--color-accent);
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

.chat-widget__container {
    position: absolute;
    bottom: 90px;
    right: 0;
    width: 380px;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition-base);
}

.chat-widget__container.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.chat-widget__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.chat-widget__header-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.chat-widget__header-avatar {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-accent);
    object-fit: cover;
}

.chat-widget__name {
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.chat-widget__status {
    color: var(--color-accent);
    font-size: var(--font-size-xs);
}

.chat-widget__close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chat-widget__close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-widget__close svg {
    width: 18px;
    height: 18px;
    color: var(--color-white);
}

.chat-widget__messages {
    height: 300px;
    padding: var(--spacing-4);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.chat-message {
    display: flex;
    gap: var(--spacing-3);
    max-width: 85%;
}

.chat-message--bot {
    align-self: flex-start;
}

.chat-message--user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.chat-message__avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

.chat-message__content {
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.chat-message--bot .chat-message__content {
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    border-bottom-left-radius: var(--spacing-1);
}

.chat-message--user .chat-message__content {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-primary);
    border-bottom-right-radius: var(--spacing-1);
}

.chat-widget__form {
    display: flex;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-gray-200);
}

.chat-widget__input {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-family: inherit;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    outline: none;
    transition: var(--transition-fast);
}

.chat-widget__input:focus {
    border-color: var(--color-accent);
}

.chat-widget__send {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chat-widget__send:hover {
    transform: scale(1.05);
}

.chat-widget__send svg {
    width: 18px;
    height: 18px;
    color: var(--color-primary);
}

/* =============================================
   Animations
   ============================================= */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

/* =============================================
   Use Cases Section
   ============================================= */
.use-cases {
    padding: var(--spacing-24) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

.use-cases .section__tag {
    background: rgba(197, 165, 90, 0.2);
    color: var(--color-accent);
}

.use-cases .section__title {
    color: var(--color-white);
}

.use-cases .section__description {
    color: var(--color-gray-400);
}

.use-cases__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-6);
}

.video-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
}

.video-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.video-card__thumbnail {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-base);
}

.video-card:hover .video-card__thumbnail img {
    transform: scale(1.1);
}

.video-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(197, 165, 90, 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    box-shadow: 0 4px 20px rgba(197, 165, 90, 0.4);
}

.video-card:hover .video-card__play {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--color-accent);
}

.video-card__play svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
    margin-left: 4px;
}

.video-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 22, 40, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
    padding: var(--spacing-4);
    text-align: center;
    backdrop-filter: blur(4px);
    z-index: 1;
}

.video-card:hover .video-card__overlay {
    opacity: 1;
}

.video-card__text {
    color: var(--color-accent);
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.video-card__description {
    color: var(--color-gray-200);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.video-card:hover .video-card__text,
.video-card:hover .video-card__description {
    transform: translateY(0);
}

.video-card__play {
    z-index: 2;
}


/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .use-cases__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about__grid,
    .contact__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-12);
    }

    .footer__content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-primary);
        flex-direction: column;
        justify-content: center;
        gap: var(--spacing-8);
        transition: var(--transition-base);
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__title {
        font-size: var(--font-size-4xl);
    }

    .hero__image {
        width: 100%;
        opacity: 0.2;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .seminarios__grid {
        grid-template-columns: 1fr;
    }

    .seminario-card__image {
        height: 300px;
    }

    .team__card {
        flex-direction: column;
        text-align: center;
    }

    .about__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
    }

    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__tagline {
        max-width: 100%;
    }

    .contact__form {
        grid-template-columns: 1fr;
    }

    .form__group:nth-child(5),
    .form__group:nth-child(6),
    .contact__form button {
        grid-column: auto;
    }

    .chat-widget__container {
        width: calc(100vw - var(--spacing-12));
        right: calc(-50vw + 35px + var(--spacing-6));
    }

    .video-modal__container,
    .image-modal__container {
        width: 90%;
        max-width: none;
    }

    .video-modal__close,
    .image-modal__close {
        top: -45px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .section__title {
        font-size: var(--font-size-2xl);
    }

    .hero__buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .use-cases__grid {
        grid-template-columns: 1fr;
    }
}