:root {
    /* Colors */
    --clr-bg: #0f172a; /* Slate 900 */
    --clr-surface: #1e293b; /* Slate 800 */
    --clr-surface-light: #334155; /* Slate 700 */
    --clr-primary: #facc15; /* Yellow 400 */
    --clr-primary-hover: #eab308; /* Yellow 500 */
    --clr-text: #f8fafc; /* Slate 50 */
    --clr-text-muted: #cbd5e1; /* Slate 300 */
    
    /* Typography */
    --font-main: 'Outfit', sans-serif;
    
    /* Spacing */
    --sp-sm: 0.5rem;
    --sp-md: 1rem;
    --sp-lg: 2rem;
    --sp-xl: 4rem;
    --sp-2xl: 6rem;
    
    /* Radii & Shadows */
    --rad-sm: 0.25rem;
    --rad-md: 0.5rem;
    --rad-lg: 1rem;
    --shadow-soft: 0 10px 40px -10px rgba(0,0,0,0.5);
    
    /* Transitions */
    --trans-fast: 0.2s ease;
    --trans-normal: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--clr-bg);
    color: var(--clr-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--sp-lg);
}

.grid {
    display: grid;
    gap: var(--sp-lg);
}

.text-center { text-align: center; }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--sp-sm);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(2rem, 3vw, 2.5rem); }
h3 { font-size: 1.25rem; }

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--sp-xl);
}

.section-header p {
    color: var(--clr-text-muted);
    font-size: 1.125rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: rgba(250, 204, 21, 0.1);
    color: var(--clr-primary);
    border: 1px solid rgba(250, 204, 21, 0.2);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--sp-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--rad-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--trans-normal);
    border: 2px solid transparent;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

.btn-primary:hover {
    background-color: var(--clr-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(250, 204, 21, 0.3);
}

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

.btn-outline:hover {
    background-color: var(--clr-primary);
    color: var(--clr-bg);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background-color: #25D366;
    color: #ffffff;
}

.btn-whatsapp:hover {
    background-color: #128C7E;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--trans-normal);
    padding: var(--sp-md) 0;
    background: transparent;
}

.header.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    padding: var(--sp-sm) 0;
    box-shadow: var(--shadow-soft);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

.logo {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    height: 144px;
    width: auto;
    object-fit: contain;
}

.footer-logo {
    height: 180px;
    width: auto;
    object-fit: contain;
    margin-bottom: var(--sp-sm);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--sp-lg);
}

.nav-list a {
    font-weight: 600;
    color: var(--clr-text-muted);
    transition: color var(--trans-fast);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn span {
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--clr-text);
    transition: var(--trans-normal);
}

.mobile-menu-btn span:nth-child(1) { top: 0; }
.mobile-menu-btn span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.mobile-menu-btn span:nth-child(3) { bottom: 0; }

.mobile-menu-btn.active span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding-top: var(--sp-xl);
}

.hero-title span {
    color: var(--clr-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--clr-text-muted);
    margin-bottom: var(--sp-lg);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--sp-md);
    flex-wrap: wrap;
}

/* Services Preview */
.services-preview {
    padding: var(--sp-2xl) 0;
    background: linear-gradient(to bottom, var(--clr-bg), var(--clr-surface));
}

.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.service-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(255,255,255,0.05);
    padding: var(--sp-lg);
    border-radius: var(--rad-lg);
    transition: var(--trans-normal);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(250, 204, 21, 0.3);
    background: rgba(30, 41, 59, 0.8);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--sp-md);
}

.service-link {
    color: var(--clr-primary);
    font-weight: 600;
    display: inline-block;
    margin-top: var(--sp-md);
}

/* Catalog */
.catalog {
    padding: var(--sp-2xl) 0;
    background: var(--clr-surface);
}

.catalog-tabs {
    display: flex;
    gap: var(--sp-sm);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--sp-xl);
}

.catalog-tab {
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 100px;
    color: var(--clr-text-muted);
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--trans-fast);
}

.catalog-tab:hover, .catalog-tab.active {
    background: var(--clr-primary);
    color: var(--clr-bg);
    border-color: var(--clr-primary);
}

.catalog-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.catalog-item {
    border-radius: var(--rad-lg);
    overflow: hidden;
    position: relative;
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: transform var(--trans-normal);
}

.catalog-item.hidden {
    display: none;
}

.catalog-img {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.6s ease;
}

.catalog-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.15) 60%);
}

.catalog-item:hover .catalog-img {
    transform: scale(1.07);
}

.catalog-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--sp-lg);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
}

.catalog-tag {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    background: rgba(250, 204, 21, 0.15);
    color: var(--clr-primary);
    border: 1px solid rgba(250, 204, 21, 0.25);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.catalog-content h3 {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.3;
}

.btn-sm {
    padding: 0.4rem 1rem;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Why Us */
.why-us {
    padding: var(--sp-2xl) 0;
    background: var(--clr-bg);
}

.why-us-layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--sp-2xl);
}

.features-list {
    list-style: none;
    margin-top: var(--sp-lg);
    display: flex;
    flex-direction: column;
    gap: var(--sp-lg);
}

.features-list li {
    display: flex;
    gap: var(--sp-md);
}

.feature-icon {
    font-size: 1.5rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: rgba(250, 204, 21, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.features-list p {
    color: var(--clr-text-muted);
}

.image-wrapper {
    position: relative;
    border-radius: var(--rad-lg);
    overflow: hidden;
}

.image-wrapper img {
    border-radius: var(--rad-lg);
    width: 100%;
}

.stats-card {
    position: absolute;
    bottom: -2rem;
    left: -2rem;
    background: var(--clr-surface);
    padding: var(--sp-lg);
    border-radius: var(--rad-lg);
    border: 1px solid rgba(255,255,255,0.05);
    box-shadow: var(--shadow-soft);
    z-index: 10;
}

.stats-number {
    font-size: 2.5rem;
    color: var(--clr-primary);
    margin: 0;
}

/* FAQ */
.faq {
    padding: var(--sp-2xl) 0;
    background: var(--clr-surface);
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
}

.faq-item {
    background: var(--clr-bg);
    border-radius: var(--rad-md);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.05);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: var(--sp-lg);
    background: transparent;
    border: none;
    color: var(--clr-text);
    font-size: 1.125rem;
    font-weight: 600;
    font-family: var(--font-main);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    color: var(--clr-primary);
    font-size: 1.5rem;
    transition: transform var(--trans-normal);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--sp-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--trans-normal), padding var(--trans-normal);
}

.faq-answer p {
    color: var(--clr-text-muted);
    padding-bottom: var(--sp-lg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* Footer */
.footer {
    background: var(--clr-bg);
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: var(--sp-2xl) 0 var(--sp-md);
}

.footer-top {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    margin-bottom: var(--sp-xl);
}

.footer-brand p {
    color: var(--clr-text-muted);
    margin-top: var(--sp-sm);
    max-width: 300px;
}

.footer-links h3, .footer-contact h3 {
    margin-bottom: var(--sp-md);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--sp-sm);
}

.footer-links a {
    color: var(--clr-text-muted);
    transition: color var(--trans-fast);
}

.footer-links a:hover {
    color: var(--clr-primary);
}

.footer-contact p {
    color: var(--clr-text-muted);
    margin-bottom: var(--sp-sm);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--sp-md);
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--clr-text-muted);
    font-size: 0.875rem;
}

/* Cotización Form */
.cotizacion {
    padding: var(--sp-2xl) 0;
    background: var(--clr-bg);
}

.cotizacion-form {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--clr-surface);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--rad-md);
    padding: 0.75rem 1rem;
    color: var(--clr-text);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color var(--trans-fast);
    outline: none;
    width: 100%;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--clr-surface-light);
}

.form-group select option {
    background: var(--clr-surface);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(250, 204, 21, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.btn-submit {
    width: 100%;
    margin-top: var(--sp-sm);
    font-size: 1.1rem;
    padding: 1rem;
}

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Scroll Animations */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="fade-left"] {
    transform: translateX(-30px);
}

[data-animate="fade-left"].is-visible {
    transform: translateX(0);
}

[data-animate="fade-right"] {
    transform: translateX(30px);
}

[data-animate="fade-right"].is-visible {
    transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .why-us-layout {
        grid-template-columns: 1fr;
    }
    
    .stats-card {
        bottom: 1rem;
        left: 1rem;
    }
    
    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--clr-surface);
        flex-direction: column;
        padding: 6rem var(--sp-lg);
        transition: right var(--trans-normal);
        border-left: 1px solid rgba(255,255,255,0.05);
    }

    .nav-list.active {
        right: 0;
    }

    .nav-actions {
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }

    .nav-actions .btn-whatsapp {
        padding: 0.45rem;
        width: 38px;
        height: 38px;
        border-radius: 50%;
        flex-shrink: 0;
    }

    .nav-actions .btn-whatsapp svg {
        margin-right: 0 !important;
    }

    .nav-actions .btn-whatsapp .btn-text {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .footer-top {
        grid-template-columns: 1fr;
    }

    /* Logo más compacto en móvil */
    .logo-img {
        height: 72px;
    }

    .footer-logo {
        height: 100px;
    }

    /* Hero más ajustado */
    h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    h2 {
        font-size: clamp(1.4rem, 5vw, 2rem);
    }

    .hero {
        min-height: 100svh;
        padding-top: 4rem;
    }

    .hero-content {
        padding-top: var(--sp-lg);
        padding-bottom: var(--sp-lg);
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: var(--sp-md);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }

    .badge {
        font-size: 0.75rem;
        padding: 0.2rem 0.75rem;
    }

    /* Secciones con menos padding */
    .services-preview,
    .catalog,
    .why-us,
    .faq {
        padding: var(--sp-xl) 0;
    }

    .section-header {
        margin-bottom: var(--sp-lg);
    }

    .section-header p {
        font-size: 1rem;
    }

    /* Servicios en 2 columnas */
    .services-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-md);
    }

    .service-card {
        padding: var(--sp-md);
    }

    .service-icon {
        font-size: 2rem;
        margin-bottom: var(--sp-sm);
    }

    .service-card h3 {
        font-size: 0.95rem;
    }

    /* Catálogo en 1 columna */
    .catalog-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-md);
    }

    .catalog-tabs {
        gap: 0.4rem;
        margin-bottom: var(--sp-lg);
    }

    .catalog-tab {
        font-size: 0.75rem;
        padding: 0.4rem 0.9rem;
    }

    .catalog-content h3 {
        font-size: 0.9rem;
    }

    .catalog-tag {
        font-size: 0.6rem;
    }

    /* Why us más compacto */
    .features-list {
        gap: var(--sp-md);
    }

    .features-list h4 {
        font-size: 0.95rem;
    }

    .features-list p {
        font-size: 0.875rem;
    }

    .stats-number {
        font-size: 2rem;
    }

    /* FAQ */
    .faq-question {
        font-size: 1rem;
        padding: var(--sp-md);
    }

    .faq-answer {
        padding: 0 var(--sp-md);
    }
}

@media (max-width: 420px) {
    .catalog-grid {
        grid-template-columns: 1fr;
    }

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

    .container {
        padding: 0 var(--sp-md);
    }
}