/* ============================================
   FRIGOPAC - Estilos Principales
   ============================================ */

/* ============================================
   1. VARIABLES CSS
   ============================================ */
:root {
    --color-primary: #0B1D3A;
    --color-primary-light: #1E3A5F;
    --color-secondary: #00B4D8;
    --color-secondary-dark: #0077A8;
    --color-secondary-soft: #E6F7FB;
    --color-accent: #C9A227;
    --color-white: #FFFFFF;
    --color-gray-100: #F8FAFC;
    --color-gray-200: #E8EAED;
    --color-gray-300: #CBD5E1;
    --color-gray-600: #475569;
    --color-gray-800: #1E293B;
    --color-dark: #071225;
    
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-accent: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-slower: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    --header-height: 64px;
}

/* ============================================
   2. RESET Y BASE
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--space-sm));
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ============================================
   3. UTILIDADES
   ============================================ */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 500;
    color: var(--color-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-title--light {
    color: var(--color-white);
}

/* Scroll reveal (IntersectionObserver-driven, see main.js) */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ============================================
   4. BOTONES
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    cursor: pointer;
}

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

.btn--primary:hover {
    background-color: #00a3c4;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn--large {
    padding: 1.25rem 3rem;
    font-size: var(--text-base);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    transition: var(--transition-base);
}

.link-arrow svg {
    transition: var(--transition-base);
}

.link-arrow:hover {
    color: var(--color-secondary);
}

.link-arrow:hover svg {
    transform: translateX(4px);
}

/* ============================================
   5. CABECERA DEL SITIO (igual en todas las páginas)
   Barra de cristal blanca fija, menú en línea desde 960 px
   y panel desplegable en celular.
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.site-header__bar {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    height: var(--header-height);
    padding: 0 1.5rem;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

@media (min-width: 768px) {
    .site-header__bar { padding: 0 2.5rem; }
}

.site-header.is-scrolled .site-header__bar {
    border-bottom-color: rgba(11, 29, 58, 0.06);
    box-shadow: 0 6px 24px rgba(11, 29, 58, 0.08);
}

.site-header__logo {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    text-decoration: none;
    opacity: 0;
    animation: blurFadeUp 1s ease-out 0ms forwards;
}

.site-header__nav {
    display: none;
}

@media (min-width: 960px) {
    .site-header__nav {
        display: flex;
        flex: 1;
        justify-content: center;
    }
}

.site-header__menu {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
}

.site-header__menu li {
    opacity: 0;
    animation: blurFadeUp 1s ease-out forwards;
}
.site-header__menu li:nth-child(1) { animation-delay: 100ms; }
.site-header__menu li:nth-child(2) { animation-delay: 150ms; }
.site-header__menu li:nth-child(3) { animation-delay: 200ms; }
.site-header__menu li:nth-child(4) { animation-delay: 250ms; }
.site-header__menu li:nth-child(5) { animation-delay: 300ms; }

.site-header__link {
    position: relative;
    display: inline-block;
    padding: 0.5rem 0;
    font-family: var(--font-accent);
    font-weight: 400;
    font-size: 0.8125rem;
    color: var(--color-primary);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.site-header__link::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.25rem;
    height: 1px;
    background-color: currentColor;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.site-header__link:hover,
.site-header__link[aria-current="page"] {
    opacity: 1;
}

.site-header__link:hover::after,
.site-header__link[aria-current="page"]::after {
    transform: scaleX(1);
}

.site-header__link[aria-current="page"] {
    font-weight: 500;
}

.site-header__cta {
    margin-left: auto;
    padding: 0.5rem 0;
    font-family: var(--font-accent);
    font-weight: 500;
    font-size: 0.8125rem;
    color: var(--color-primary);
    text-decoration: none;
    opacity: 0;
    animation: blurFadeUp 1s ease-out 350ms forwards;
    transition: color var(--transition-fast);
}

.site-header__cta:hover {
    color: var(--color-primary-light);
}

.site-header__toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    margin-right: -10px;
    padding: 0;
    background: none;
    border: 0;
    color: var(--color-primary);
    cursor: pointer;
}

.site-header__toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background-color: currentColor;
    transition: transform var(--transition-base);
}

.site-header__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(3.75px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(-3.75px) rotate(-45deg);
}

@media (min-width: 960px) {
    .site-header__toggle { display: none; }
    .site-header__cta { margin-left: 0; }
}

/* Panel del menú en celular */
.site-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    padding: var(--space-md) 1.5rem var(--space-xl);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility 0s linear 0.3s;
}

.site-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

@media (min-width: 960px) {
    .site-menu { display: none; }
}

.site-menu__list {
    list-style: none;
    border-top: 1px solid var(--color-gray-200);
}

.site-menu__list li {
    border-bottom: 1px solid var(--color-gray-200);
}

.site-menu__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 56px;
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 400;
    color: var(--color-primary);
    text-decoration: none;
}

.site-menu__link[aria-current="page"] {
    font-weight: 600;
}

.site-menu__link[aria-current="page"]::after {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background-color: var(--color-secondary);
}

.site-menu__cta {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    margin-top: var(--space-lg);
    border-radius: var(--radius-full);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-accent);
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
}

body.has-menu-open {
    overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
    .site-header__logo,
    .site-header__menu li,
    .site-header__cta {
        opacity: 1;
        animation: none;
    }

    .site-menu,
    .site-menu.is-open,
    .site-header__toggle span {
        transition: none;
    }
}

/* ============================================
   5b. ENCABEZADO DE LAS PÁGINAS INTERNAS
   ============================================ */
.page-hero {
    position: relative;
    isolation: isolate;
    height: 60vh;
    min-height: 400px;
    padding-top: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.page-hero--compact {
    height: 50vh;
    min-height: 350px;
}

.page-hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

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

.page-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(11, 29, 58, 0.9) 0%, rgba(11, 29, 58, 0.7) 100%);
}

.page-hero__content {
    text-align: center;
    color: var(--color-white);
    padding: var(--space-lg);
}

.page-hero__title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
    font-weight: 500;
    margin-bottom: var(--space-md);
}

.page-hero__subtitle {
    font-size: var(--text-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   6. HERO DE LA PORTADA
   ============================================ */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 640px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-dark) 100%);
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero__bg-img,
.hero__bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 78% 65%;
}
.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 20%, rgba(255, 255, 255, 0) 60%, rgba(255, 255, 255, 0.25) 100%);
}

.hero__content {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

/* --- Texto principal --- */
.hero__text {
    padding: 0 1.5rem 3rem;
    max-width: 42rem;
}
@media (min-width: 768px) {
    .hero__text { padding: 0 3rem 4.5rem; }
}

.hero__eyebrow {
    font-family: var(--font-accent);
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(11, 29, 58, 0.7);
    margin-bottom: 0.5rem;
    opacity: 0;
    animation: blurFadeUp 1s ease-out 450ms forwards;
}

.hero__title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 2.125rem);
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    margin-bottom: 1.25rem;
    opacity: 0;
    animation: blurFadeUp 1s ease-out 550ms forwards;
}


.hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    animation: blurFadeUp 1s ease-out 650ms forwards;
}

@keyframes blurFadeUp {
    from { opacity: 0; filter: blur(20px); transform: translateY(40px); }
    to { opacity: 1; filter: blur(0); transform: translateY(0); }
}

/* --- Botones del hero (scoped, no chocan con .btn global del sitio) --- */
.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    font-family: var(--font-accent);
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}
.hero-btn:active { transform: scale(0.98); }
.hero-btn svg { width: 16px; height: 16px; }

.hero-btn--glass {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1.5px solid var(--color-primary);
    box-shadow: 0 6px 20px rgba(11, 29, 58, 0.25);
    color: var(--color-primary);
    font-weight: 600;
}
.hero-btn--glass:hover { background: var(--color-white); box-shadow: 0 8px 24px rgba(11, 29, 58, 0.3); }

/* ============================================
   7. TRUST BAR SECTION
   ============================================ */
.trust-bar {
    padding: var(--space-2xl) 0;
    background-color: var(--color-gray-100);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.trust-bar__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.trust-bar__item {
    padding: 0 var(--space-lg);
    border-left: 1px solid var(--color-gray-300);
}

.trust-bar__item:first-child {
    border-left: none;
    padding-left: 0;
}

.trust-bar__index {
    display: block;
    font-family: var(--font-accent);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.trust-bar__title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.trust-bar__text {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.trust-bar__grid .reveal:nth-child(1) { transition-delay: 0ms; }
.trust-bar__grid .reveal:nth-child(2) { transition-delay: 80ms; }
.trust-bar__grid .reveal:nth-child(3) { transition-delay: 160ms; }
.trust-bar__grid .reveal:nth-child(4) { transition-delay: 240ms; }

@media (max-width: 900px) {
    .trust-bar__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg) 0;
    }
    .trust-bar__item:nth-child(3) {
        border-left: none;
        padding-left: 0;
    }
}

@media (max-width: 560px) {
    .trust-bar__grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .trust-bar__item {
        border-left: none !important;
        padding-left: 0 !important;
    }
}

/* ============================================
   8. CAPABILITIES SECTION (Servicios)
   ============================================ */
.capabilities {
    padding: var(--space-4xl) 0;
    background-color: var(--color-white);
}

.capabilities__header {
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
    text-align: center;
}

.capabilities__subtitle {
    margin-top: var(--space-md);
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.capabilities__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .capabilities__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.capabilities__card {
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.capabilities__card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.capabilities__card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.capabilities__card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slower);
}

.capabilities__card:hover .capabilities__card-image img {
    transform: scale(1.06);
}

.capabilities__card-body {
    padding: var(--space-xl);
}

.capabilities__icon {
    width: 48px;
    height: 48px;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.capabilities__icon svg {
    width: 100%;
    height: 100%;
}

.capabilities__card-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.capabilities__card-text {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.capabilities__list {
    list-style: none;
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.capabilities__list li {
    position: relative;
    padding-left: 1.1rem;
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.5;
}

.capabilities__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-secondary);
}

.capabilities__card-link {
    margin-top: var(--space-md);
}

.capabilities__grid .reveal:nth-child(1) { transition-delay: 0ms; }
.capabilities__grid .reveal:nth-child(2) { transition-delay: 120ms; }
.capabilities__grid .reveal:nth-child(3) { transition-delay: 240ms; }

/* ============================================
   9. INDUSTRIES SECTION (Sectores)
   ============================================ */
.industries {
    padding: var(--space-4xl) 0;
    background-color: var(--color-gray-100);
    background-image: linear-gradient(180deg, rgba(248, 250, 252, 0.75) 0%, rgba(248, 250, 252, 0.55) 100%), url('../assets/images/bg-hielo-proyectos.png');
    background-position: bottom center;
    background-size: cover;
    background-repeat: no-repeat;
}

.industries__header {
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
    text-align: center;
}

.industries__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl) var(--space-lg);
}

@media (min-width: 900px) {
    .industries__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.industries__item {
    text-align: center;
    transition: var(--transition-base);
}

.industries__grid .reveal:nth-child(1) { transition-delay: 0ms; }
.industries__grid .reveal:nth-child(2) { transition-delay: 80ms; }
.industries__grid .reveal:nth-child(3) { transition-delay: 160ms; }
.industries__grid .reveal:nth-child(4) { transition-delay: 240ms; }

.industries__icon {
    width: 44px;
    height: 44px;
    margin: 0 auto var(--space-md);
    color: var(--color-primary);
    transition: var(--transition-base);
}

.industries__item:hover .industries__icon {
    color: var(--color-secondary);
    transform: translateY(-2px);
}

.industries__icon svg {
    width: 100%;
    height: 100%;
}

.industries__title {
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.industries__text {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.industries__link {
    display: inline-block;
    margin-top: var(--space-sm);
    font-family: var(--font-accent);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition-base);
}

.industries__link:hover {
    color: var(--color-primary);
}

/* ============================================
   10. PROJECTS SECTION
   ============================================ */
.projects {
    padding: var(--space-4xl) 0;
    background-color: var(--color-white);
}

.projects__header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.projects__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

@media (min-width: 768px) {
    .projects__grid {
        grid-template-columns: 1.6fr 1fr 1fr;
        grid-template-rows: repeat(2, 260px);
        grid-template-areas:
            "large s1 s2"
            "large s3 s4";
    }

    .projects__item--large { grid-area: large; }
    .projects__item--s1 { grid-area: s1; }
    .projects__item--s2 { grid-area: s2; }
    .projects__item--s3 { grid-area: s3; }
    .projects__item--s4 { grid-area: s4; }

    .projects__grid .projects__item {
        aspect-ratio: auto;
        height: 100%;
    }
}

.projects__item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1/1;
}

@media (min-width: 480px) {
    .projects__item {
        aspect-ratio: 4/3;
    }
}

.projects__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slower);
}

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

.projects__item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(11, 29, 58, 0.9), transparent);
}

.projects__item-tag {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    z-index: 2;
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-family: var(--font-accent);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-white);
}

.projects__item-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 500;
    line-height: 1.25;
    color: var(--color-white);
}

@media (min-width: 768px) {
    .projects__item-title {
        font-size: var(--text-xl);
    }

    .projects__item--large .projects__item-title {
        font-size: var(--text-2xl);
    }
}

.projects__grid .reveal:nth-child(1) { transition-delay: 0ms; }
.projects__grid .reveal:nth-child(2) { transition-delay: 80ms; }
.projects__grid .reveal:nth-child(3) { transition-delay: 160ms; }
.projects__grid .reveal:nth-child(4) { transition-delay: 240ms; }
.projects__grid .reveal:nth-child(5) { transition-delay: 320ms; }

/* Clients Logos - Infinite Marquee */
.clients {
    text-align: center;
    padding: var(--space-2xl) 0;
    background-color: var(--color-white);
}

.clients__title {
    font-family: var(--font-accent);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
}

.marquee {
    overflow: hidden;
    width: 100%;
    mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, black 10%, black 90%, transparent);
}

.marquee__track {
    display: flex;
    align-items: center;
    gap: var(--space-4xl);
    width: max-content;
    animation: marqueeScroll 28s linear infinite;
}

.clients__logo-img {
    height: 34px;
    width: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.5;
    transition: var(--transition-base);
}

.clients__logo-img:hover {
    opacity: 1;
}

@keyframes marqueeScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
    .marquee__track { animation: none; }
}

/* ============================================
   11. TESTIMONIAL SECTION
   ============================================ */
.testimonial {
    position: relative;
    padding: var(--space-4xl) 0;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.testimonial__background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

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

.testimonial__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 29, 58, 0.85);
}

.testimonial__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testimonial__icon {
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.testimonial__quote {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-xl), 4vw, var(--text-3xl));
    font-weight: 400;
    font-style: italic;
    color: var(--color-white);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
}

.testimonial__author {
    display: block;
}

.testimonial__author-name {
    display: block;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.testimonial__author-company {
    font-size: var(--text-sm);
    color: var(--color-gray-300);
}

/* ============================================
   12. CTA SECTION
   ============================================ */
.cta {
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    text-align: center;
}

.cta__content {
    max-width: 600px;
    margin: 0 auto;
}

.cta__title {
    font-family: var(--font-heading);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 500;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

.cta__subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-300);
    margin-bottom: var(--space-xl);
}

.cta__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-white);
    color: var(--color-white);
    background: transparent;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition-base);
}

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

.cta__btn span {
    transition: transform var(--transition-base);
}

.cta__btn:hover span {
    transform: translateX(4px);
}

/* ============================================
   13. FOOTER
   ============================================ */
.footer {
    background-color: var(--color-dark);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1.5fr;
    }
}

.footer__logo {
    display: inline-block;
    margin-bottom: var(--space-md);
}

.footer__logo .logo-text {
    color: var(--color-white);
}

.footer__description {
    font-size: var(--text-sm);
    color: var(--color-gray-300);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.footer__social {
    display: flex;
    gap: var(--space-sm);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-gray-600);
    border-radius: var(--radius-full);
    color: var(--color-white);
    transition: var(--transition-base);
}

.footer__social-link:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: var(--color-primary);
}

.footer__title {
    font-family: var(--font-accent);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__links a {
    font-size: var(--text-sm);
    color: var(--color-gray-300);
    transition: var(--transition-base);
}

.footer__links a:hover {
    color: var(--color-secondary);
}

.footer__contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.footer__contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-gray-300);
}

.footer__contact-list svg {
    flex-shrink: 0;
    color: var(--color-secondary);
}

.footer__contact-list a:hover {
    color: var(--color-secondary);
}

.footer__bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

/* ============================================
   14. WHATSAPP FLOAT BUTTON
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 998;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background-color: #25D366;
    color: var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xl);
    transition: var(--transition-base);
}

.whatsapp-float:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 40px rgba(37, 211, 102, 0.4);
}

.whatsapp-float__text {
    display: none;
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    padding-right: var(--space-sm);
}

@media (min-width: 768px) {
    .whatsapp-float {
        padding: var(--space-sm) var(--space-md);
    }
    .whatsapp-float__text {
        display: block;
    }
}

/* ============================================
   17. SCROLL ANIMATIONS (SIMPLE)
   ============================================ */
.reveal-fade,
.reveal-slide-left,
.reveal-slide-right {
    opacity: 1;
    transform: none;
}

/* Enlace al Project Engine (proyecto.html) */
.capabilities__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--space-md);
    padding: 0.8rem 1.4rem;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-white);
    font-family: var(--font-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}
.capabilities__cta:hover { background: var(--color-primary-light); transform: translateY(-1px); box-shadow: var(--shadow-lg); }