/* ================================
   TRANSPORTES CASTRO - ESTILOS PREMIUM CLAROS
   ================================ */

/* Variables CSS - Paleta Rojo Negro Blanco */
:root {
    --primary-color: #000000;
    --secondary-color: #1a1a1a;
    --accent-color: #d40000;
    --accent-light: #ff2a2a;
    --accent-glow: #b30000;
    --text-primary: #000000;
    --text-secondary: #2f2f2f;
    --bg-light: #f7f7f8;
    --bg-lighter: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 14px 34px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 32px 70px rgba(0, 0, 0, 0.16);
    --shadow-red: 0 14px 28px rgba(212, 0, 0, 0.18);
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.12), 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-premium-hover: 0 34px 60px rgba(0, 0, 0, 0.18), 0 8px 20px rgba(0, 0, 0, 0.12);
    --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --transition: all 0.25s ease;
}

/* Reset y Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-light);
    background-image: radial-gradient(circle at 10% 10%, rgba(0, 0, 0, 0.03), transparent 35%);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #000 0%, var(--accent-color) 45%, #000 100%);
    z-index: 1300;
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    width: 0;
    background: linear-gradient(90deg, var(--accent-color), #ff5a5a);
    z-index: 1400;
    box-shadow: 0 2px 8px rgba(212, 0, 0, 0.35);
}

/* ================================
   NAVBAR
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    box-shadow: var(--shadow-premium);
    transition: var(--transition);
}

.navbar:hover {
    box-shadow: var(--shadow-premium-hover);
    border-bottom-color: rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo img {
    max-height: 48px;
    width: auto;
    display: block;
}

.logo i {
    color: var(--accent-color);
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}


@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================
   SOCIAL SIDEBAR
   ================================ */
.social-sidebar {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    z-index: 500;
}

.social-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-lighter);
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 50%;
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
}

.social-icon:hover {
    background: #ffffff;
    color: var(--accent-color);
    transform: translateX(-6px) translateY(-2px);
    box-shadow: var(--shadow-premium);
}

.contact-toggle {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-lighter);
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 50%;
    color: var(--accent-color);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
}

.contact-toggle:hover {
    background: #fff;
    color: var(--accent-color);
    transform: translateX(-6px);
    box-shadow: var(--shadow-premium);
}

/* Contact Widget */
.contact-widget {
    position: fixed;
    right: 2rem;
    bottom: 2rem;
    width: 300px;
    background: var(--bg-lighter);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    z-index: 499;
    display: none;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.contact-widget.active {
    display: block;
}

.widget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.widget-header h3 {
    font-size: 1.1rem;
    color: var(--accent-color);
}

.close-widget {
    background: none;
    border: none;
    color: var(--accent-light);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-widget:hover {
    color: white;
    transform: rotate(90deg);
}

.widget-content {
    padding: 1.5rem;
}

.widget-content p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.btn-contact {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(212, 0, 0, 0.24);
}

/* ================================
   TRUCK DECORATIVE ELEMENTS
   ================================ */
.truck-left,
.truck-right {
    position: fixed;
    font-size: 8rem;
    opacity: 0;
    pointer-events: none;
    z-index: 50;
    color: rgba(0, 0, 0, 0.07);
}

.truck-left {
    left: -200px;
}

.truck-right {
    right: -200px;
}

.truck-left.animate {
    animation: truckLeftIn 4s ease-out forwards;
}

.truck-right.animate {
    animation: truckRightIn 4s ease-out forwards;
}

@keyframes truckLeftIn {
    0% {
        left: -200px;
        opacity: 0;
    }
    40% {
        opacity: 0.06;
    }
    100% {
        left: 30px;
        opacity: 0;
    }
}

@keyframes truckRightIn {
    0% {
        right: -200px;
        opacity: 0;
    }
    40% {
        opacity: 0.06;
    }
    100% {
        right: 30px;
        opacity: 0;
    }
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 60px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 10%, rgba(212, 0, 0, 0.12), transparent 35%);
    pointer-events: none;
    z-index: 1;
}

.hero-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.grid-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
    background-size: 60px 60px;
}

.gradient-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(248, 249, 250, 1) 0%,
        rgba(240, 245, 250, 0.8) 50%,
        rgba(255, 255, 255, 1) 100%);
}

#canvas-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    display: block;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 1400px;
    width: 100%;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.8rem;
    text-align: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(3.8rem, 10vw, 8rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 1.2rem;
    color: var(--primary-color);
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease-out;
    position: relative;
    text-wrap: balance;
    text-shadow: 0 12px 26px rgba(0, 0, 0, 0.12);
}

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

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    border-radius: 2px;
    animation: expandWidth 0.8s ease-out 0.3s forwards;
    transform-origin: center;
}

@keyframes expandWidth {
    0% {
        width: 0;
    }
    100% {
        width: 60px;
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    font-weight: 500;
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle .highlight {
    color: var(--accent-color);
    font-weight: 700;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    padding: 1.1rem 2.4rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
    box-shadow: 0 10px 22px rgba(212, 0, 0, 0.24);
    position: relative;
}

.btn-primary::after {
    display: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 34px rgba(212, 0, 0, 0.28);
    filter: none;
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2.5px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    transform: scale(1.03);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 180px;
    width: min(620px, 100%);
    opacity: 0.9;
    animation: fadeInDown 0.8s ease-out;
}

.floating-box {
    position: absolute;
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, 
        rgba(0, 0, 0, 0.04), 
        rgba(0, 0, 0, 0.02));
    border: 2px solid var(--accent-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: var(--primary-color);
    animation: float 4s ease-in-out infinite;
    animation-delay: var(--delay);
    box-shadow: var(--shadow-sm);
}

.floating-box:nth-child(1) {
    top: 0;
    left: 0;
}

.floating-box:nth-child(2) {
    top: 50%;
    right: 0;
    animation-delay: 0.5s;
}

.floating-box:nth-child(3) {
    bottom: 0;
    left: 50%;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-25px) rotate(3deg);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 15;
    animation: bounce 2.5s infinite;
    font-size: 2rem;
    color: var(--accent-color);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-12px);
    }
}

/* ================================
   EMPRESAS SECTION
   ================================ */
.empresas {
    padding: 7rem 2rem;
    background: var(--bg-light);
    position: relative;
}

.scroll-section {
    position: relative;
    overflow: hidden;
}

.scroll-section::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--accent-color) 25%, var(--accent-color) 75%, transparent 100%);
    transform: scaleX(0.05);
    opacity: 0;
    transition: transform 0.8s ease, opacity 0.8s ease;
}

.scroll-section.in-view::before {
    transform: scaleX(1);
    opacity: 1;
}

.scroll-section .section-header,
.scroll-section .institutional-header,
.scroll-section .contacto-header {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}

.scroll-section.in-view .section-header,
.scroll-section.in-view .institutional-header,
.scroll-section.in-view .contacto-header {
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    text-align: center;
    margin-bottom: 4.5rem;
    animation: fadeInUp 0.6s ease-out;
}

.section-header h2 {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    display: inline-block;
    text-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
    border-radius: 2px;
    animation: expandWidth 0.8s ease-out 0.3s forwards;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 500;
}

.empresas-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr));
    gap: 2.5rem;
}

.empresa-card {
    background: var(--bg-lighter);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    animation: fadeInUp 0.35s ease-out;
    animation-fill-mode: both;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-premium);
    position: relative;
}

.empresa-card::before {
    display: none;
}

.empresa-card:hover::before {
    opacity: 0;
}

.empresa-card:nth-child(1) { animation-delay: 0.05s; }
.empresa-card:nth-child(2) { animation-delay: 0.1s; }
.empresa-card:nth-child(3) { animation-delay: 0.15s; }

.empresa-card:hover {
    border-color: rgba(0, 0, 0, 0.14);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-premium-hover);
}

.card-background {
    position: relative;
    height: 190px;
    background: linear-gradient(135deg, 
        rgba(0, 0, 0, 0.03), 
        rgba(0, 0, 0, 0.06));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.card-background::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: none;
}

.card-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.03) 45%, rgba(0, 0, 0, 0));
    pointer-events: none;
}

.card-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    transition: transform 0.45s ease, filter 0.45s ease;
}

.empresa-card:hover .card-preview {
    transform: scale(1.06);
    filter: contrast(1.1) saturate(1.12);
}

.card-background.preview-fallback {
    background: linear-gradient(135deg, #111111, #2b2b2b);
}

.card-background.preview-fallback::before {
    content: attr(data-label);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    white-space: nowrap;
    text-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
    z-index: 2;
}

.card-background.preview-fallback::after {
    background: linear-gradient(135deg, rgba(212, 0, 0, 0.2), rgba(0, 0, 0, 0.45));
}

.card-background.preview-fallback .card-overlay span {
    background: rgba(212, 0, 0, 0.85);
    border-color: rgba(255, 255, 255, 0.5);
}

.card-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 14px;
    z-index: 3;
    display: flex;
    justify-content: center;
}

.card-overlay span {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    color: #fff;
    background: rgba(0, 0, 0, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 999px;
    padding: 0.32rem 0.7rem;
    backdrop-filter: blur(2px);
}

.leadership-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(220px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto 2.4rem;
}

.ceo-card {
    background: var(--bg-lighter);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    transition: var(--transition);
}

.ceo-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-premium-hover);
}

.ceo-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    object-position: center;
    display: block;
}

.ceo-info {
    padding: 1rem 1.1rem 1.2rem;
    text-align: center;
}

.ceo-info h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.35rem;
}

.ceo-info p {
    font-size: 0.9rem;
    color: var(--accent-color);
    font-weight: 700;
}

@keyframes moveBackground {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.card-icon {
    position: relative;
    z-index: 2;
    font-size: 3.5rem;
    color: var(--primary-color);
    opacity: 0;
    animation: fadeInScale 0.5s ease-out 0.2s forwards;
    transition: var(--transition);
    filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.18));
}

.empresa-card:hover .card-icon {
    color: var(--accent-color);
    transform: scale(1.12);
    filter: drop-shadow(0 14px 18px rgba(0, 0, 0, 0.25));
}

@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.card-content {
    padding: 2.2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
    color: var(--primary-color);
    font-weight: 700;
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 500;
}

.card-features {
    list-style: none;
    margin-bottom: 1.8rem;
    flex: 1;
}

.card-features li {
    color: var(--text-secondary);
    margin-bottom: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.9rem;
}

.card-features i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

.btn-card {
    align-self: stretch;
    display: block;
    width: 100%;
    text-align: center;
    padding: 0.9rem 2rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
    transition: var(--transition);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    box-shadow: 0 10px 20px rgba(212, 0, 0, 0.22);
    position: relative;
    overflow: hidden;
}

.btn-card::before {
    display: none;
}

.btn-card:hover::before {
    animation: none;
}

.btn-card:hover {
    transform: translateX(4px) translateY(-2px) scale(1.01);
    box-shadow: 0 16px 30px rgba(212, 0, 0, 0.28);
}

/* ================================
   TIMELINE SECTION
   ================================ */
.historia {
    padding: 6rem 2rem 5rem;
    background: var(--bg-lighter);
    position: relative;
}

.timeline-container {
    max-width: 1100px;
    margin: 0 auto;
}

/* ── HORIZONTAL DESKTOP ── */
.timeline {
    position: relative;
    display: flex;
    align-items: stretch;
    height: 480px;
    padding: 0;
    gap: 0;
    --timeline-progress: 0%;
}

/* Background line */
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 3px;
    background: rgba(0, 0, 0, 0.06);
    transform: translateY(-50%);
    z-index: 1;
    border-radius: 2px;
}

/* Animated progress line */
.timeline::after {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: var(--timeline-progress);
    height: 3px;
    background: linear-gradient(to right, #1a1a1a, var(--accent-color), #ff5a5a);
    transform: translateY(-50%);
    z-index: 2;
    transition: width 0.15s linear;
    box-shadow: 0 0 14px rgba(212, 0, 0, 0.35);
    border-radius: 2px;
}

.timeline-item {
    flex: 1;
    position: relative;
    height: 100%;
    padding: 0 0.5rem;
    margin-bottom: 0;
    cursor: pointer;
    opacity: 0;
    animation: none;
    z-index: 5;
}

.timeline-item.active {
    animation: scaleInCenter 0.5s ease-out forwards;
}

.timeline-item:nth-child(1).active { animation-delay: 0s; }
.timeline-item:nth-child(2).active { animation-delay: 0.08s; }
.timeline-item:nth-child(3).active { animation-delay: 0.16s; }
.timeline-item:nth-child(4).active { animation-delay: 0.24s; }
.timeline-item:nth-child(5).active { animation-delay: 0.32s; }

/* Marker — centered on the line, on top layer */
.timeline-marker {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #ff5a5a 100%);
    border: 3px solid var(--bg-lighter);
    border-radius: 50%;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
    box-shadow: 0 0 0 5px rgba(212, 0, 0, 0.18), 0 6px 20px rgba(212, 0, 0, 0.35);
}

.timeline-marker::after {
    display: none;
}

.timeline-item:hover .timeline-marker {
    transform: translate(-50%, -50%) scale(1.25);
    box-shadow: 0 0 0 10px rgba(212, 0, 0, 0.12), 0 8px 28px rgba(212, 0, 0, 0.4);
}

/* Year badge — below the marker */
.timeline-item::after {
    content: attr(data-year);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, 28px);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.5px;
    color: #fff;
    z-index: 11;
    white-space: nowrap;
    background: linear-gradient(135deg, #1a1a1a 0%, var(--accent-color) 100%);
    padding: 0.2rem 0.75rem;
    border-radius: 20px;
    box-shadow: 0 3px 12px rgba(212, 0, 0, 0.3);
    pointer-events: none;
}

/* Cards */
.timeline-content {
    position: absolute;
    left: 0;
    right: 0;
    padding: 1rem 1.1rem;
    background: #fff;
    border: 1px solid rgba(212, 0, 0, 0.1);
    border-top: 3px solid var(--accent-color);
    border-radius: 12px;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.07);
    width: auto;
    margin: 0;
    opacity: 0.75;
    transition: all 0.35s ease;
}

/* Cards above */
.timeline-item:nth-child(odd) .timeline-content {
    bottom: calc(50% + 36px);
    top: auto;
    margin: 0;
}

/* Cards below */
.timeline-item:nth-child(even) .timeline-content {
    top: calc(50% + 36px);
    bottom: auto;
    margin: 0;
}

.timeline-item:hover .timeline-content {
    opacity: 1;
    border-color: rgba(212, 0, 0, 0.25);
    border-top-color: var(--accent-color);
    box-shadow: 0 12px 36px rgba(212, 0, 0, 0.13), 0 3px 10px rgba(0, 0, 0, 0.08);
    background: #fff;
}

.timeline-item:nth-child(odd):hover .timeline-content {
    transform: translateY(-6px);
}

.timeline-item:nth-child(even):hover .timeline-content {
    transform: translateY(6px);
}

/* Tag label */
.timeline-tag {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    background: rgba(212, 0, 0, 0.07);
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    margin-bottom: 0.4rem;
}

.timeline-content h3 {
    color: var(--text-primary, #1a1a1a);
    margin-bottom: 0.4rem;
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.3;
}

.timeline-item:hover .timeline-content h3 {
    color: var(--accent-color);
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.74rem;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-content p {
    -webkit-line-clamp: unset;
    display: block;
}

/* ================================
   INSTITUTIONAL SECTION
   ================================ */
.institucional {
    padding: 7rem 2rem;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-lighter) 100%);
}

.institutional-container {
    max-width: 1200px;
    margin: 0 auto;
}

.institutional-header {
    text-align: center;
    margin-bottom: 4.5rem;
}

.institutional-header h2 {
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.institutional-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
    gap: 1.4rem;
    margin-bottom: 4rem;
}

.institutional-card {
    background: var(--bg-lighter);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.8rem 1.4rem;
    text-align: center;
    transition: var(--transition);
    animation: fadeInUp 0.5s ease-out;
    animation-fill-mode: both;
    box-shadow: var(--shadow-premium);
    position: relative;
    overflow: hidden;
}

.institutional-card::before {
    display: none;
}

.institutional-card:nth-child(1) { animation-delay: 0.05s; }
.institutional-card:nth-child(2) { animation-delay: 0.1s; }
.institutional-card:nth-child(3) { animation-delay: 0.15s; }
.institutional-card:nth-child(4) { animation-delay: 0.2s; }

.institutional-card:hover::before {
    opacity: 0;
}

.institutional-card:hover {
    border-color: rgba(0, 0, 0, 0.14);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-premium-hover);
}

.institutional-card:hover .card-icon {
    animation: none;
}

.institutional-card .card-icon {
    font-size: 2.2rem;
    color: var(--accent-color);
    margin-bottom: 0.9rem;
    opacity: 1;
    animation: none;
    transition: var(--transition);
}

.institutional-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
    font-weight: 700;
}

.institutional-card p {
    color: var(--text-secondary);
    font-size: 0.84rem;
    line-height: 1.6;
}

.operational-info {
    background: linear-gradient(180deg, #ffffff 0%, #f7f7f8 100%);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 16px;
    padding: 2rem 1.4rem;
    text-align: center;
    box-shadow: 0 12px 26px rgba(0, 0, 0, 0.08);
}

.operational-info h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 1.2rem;
}

.operation-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.9rem;
}

.detail-item {
    padding: 0.7rem 0.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-item .number {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--accent-color);
}

.detail-item .label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
}

/* ================================
   CONTACT SECTION
   ================================ */
.contacto {
    padding: 7rem 2rem;
    background: linear-gradient(160deg, #f0f0f2 0%, #ffffff 60%, #f7f7f8 100%);
    position: relative;
}

.contacto::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(212, 0, 0, 0.04), transparent 40%),
                      radial-gradient(circle at 10% 80%, rgba(0, 0, 0, 0.03), transparent 35%);
    pointer-events: none;
}

.contacto-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contacto-header {
    text-align: center;
    margin-bottom: 4rem;
}

.contacto-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    background: rgba(212, 0, 0, 0.08);
    border: 1px solid rgba(212, 0, 0, 0.15);
    padding: 0.4rem 1rem;
    border-radius: 999px;
    margin-bottom: 1rem;
}

.contacto-header h2 {
    font-size: clamp(2.2rem, 6vw, 3.4rem);
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--primary-color);
    letter-spacing: -1px;
    line-height: 1.1;
}

.contacto-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
    font-weight: 500;
    line-height: 1.7;
}

.contacto-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contacto-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 1.4rem 1.6rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1.2rem;
    position: relative;
    overflow: hidden;
    border-left: 3px solid transparent;
}

.info-card:hover {
    border-color: var(--border-color);
    border-left-color: var(--accent-color);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.info-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 6px 16px rgba(212, 0, 0, 0.25);
}

.info-text h3 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.info-text p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.5;
    font-weight: 500;
}

.contacto-social {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.6rem;
    margin-top: 0.5rem;
}

.contacto-social span {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.contacto-social-links {
    display: flex;
    gap: 0.6rem;
}

.contacto-social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.contacto-social-links a:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.contacto-form-wrapper {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-premium);
}

.form-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.form-header h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.4rem;
    letter-spacing: -0.3px;
}

.form-header p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.contacto-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.form-group label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    background: var(--bg-light);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.93rem;
    transition: var(--transition);
    font-family: inherit;
    font-weight: 500;
}

.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(85, 85, 85, 0.4);
    font-weight: 400;
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: rgba(0, 0, 0, 0.18);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(212, 0, 0, 0.1);
}

.btn-send {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    margin-top: 0.4rem;
}

.btn-send i {
    font-size: 0.9rem;
    transition: transform 0.25s ease;
}

.btn-send:hover i {
    transform: translateX(4px) rotate(-10deg);
}

/* ================================
   FOOTER
   ================================ */
.footer {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-top: 2px solid var(--accent-color);
    padding: 3.5rem 2rem 1.5rem;
    margin-top: 6rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}

.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.9rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
    padding-left: 0.6rem;
}

.footer-social {
    display: flex;
    gap: 1.2rem;
}

.footer-social a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent-color);
    color: #fff;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ================================
   ANIMATIONS GENERAL
   ================================ */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px) rotateZ(-2deg);
    }
    50% {
        transform: translateY(-5px) rotateZ(1deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateZ(0deg);
    }
}

@keyframes fadeInDown {
    0% {
        opacity: 0;
        transform: translateY(-40px) rotateZ(2deg);
    }
    50% {
        transform: translateY(5px) rotateZ(-1deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateZ(0deg);
    }
}

@keyframes slideUp {
    0% {
        opacity: 0;
        transform: translateY(30px) scaleX(0.8);
    }
    60% {
        transform: translateY(-8px) scaleX(1.05);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scaleX(1);
    }
}

@keyframes float-up {
    0% {
        opacity: 0;
        transform: translateY(20px) rotateX(-30deg);
    }
    50% {
        transform: translateY(-10px) rotateX(10deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

@keyframes slide-in-left {
    0% {
        opacity: 0;
        transform: translateX(-42px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slide-in-right {
    0% {
        opacity: 0;
        transform: translateX(42px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleInCenter {
    0% {
        opacity: 0;
        transform: scale(0.84);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rotateIn {
    0% {
        opacity: 0;
        transform: rotate(-6deg) translateY(34px);
    }
    100% {
        opacity: 1;
        transform: rotate(0) translateY(0);
    }
}

@keyframes skewInDown {
    0% {
        opacity: 0;
        transform: skewY(10deg) translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: skewY(0) translateY(0);
    }
}

@keyframes expandWidth {
    0% {
        width: 0;
        opacity: 0;
    }
    100% {
        width: 60px;
        opacity: 1;
    }
}

@keyframes zoomInScale {
    0% {
        opacity: 0;
        transform: scale(0.82) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes flipInX {
    0% {
        opacity: 0;
        transform: perspective(400px) rotateX(30deg) translateY(22px);
    }
    100% {
        opacity: 1;
        transform: perspective(400px) rotateX(0) translateY(0);
    }
}

@keyframes rollInLeft {
    0% {
        opacity: 0;
        transform: translateX(-80px) rotate(-25deg);
    }
    100% {
        opacity: 1;
        transform: translateX(0) rotate(0);
    }
}

@keyframes pulseScale {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.08);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes pulseMarker {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 0, 0, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(255, 0, 0, 0.1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.85;
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    25% {
        transform: translateY(-12px);
    }
    50% {
        transform: translateY(0);
    }
    75% {
        transform: translateY(-6px);
    }
}

@keyframes rotateBorder {
    from {
        border-color: var(--accent-color);
        box-shadow: 0 0 10px rgba(255, 0, 0, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 0, 0, 0.6);
    }
    to {
        border-color: var(--accent-light);
        box-shadow: 0 0 10px rgba(255, 0, 0, 0.3);
    }
}

@keyframes spinBg {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes bgShift {
    0%, 100% {
        background: linear-gradient(135deg, rgba(255, 0, 0, 0.03), rgba(255, 0, 0, 0.08));
    }
    50% {
        background: linear-gradient(135deg, rgba(255, 0, 0, 0.08), rgba(255, 0, 0, 0.03));
    }
}

/* ================================
   SCROLL ANIMATIONS
   ================================ */
.fade-in-on-scroll {
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

.scroll-reveal {
    opacity: 0;
}

.scroll-reveal.active {
    animation: fadeInUp 0.55s ease-out forwards;
}

.scroll-reveal-scale {
    opacity: 0;
}

.scroll-reveal-scale.active {
    animation: scaleInCenter 0.55s ease-out forwards;
}

.scroll-reveal-left {
    opacity: 0;
}

.scroll-reveal-left.active {
    animation: slide-in-left 0.55s ease-out forwards;
}

.scroll-reveal-right {
    opacity: 0;
}

.scroll-reveal-right.active {
    animation: slide-in-right 0.55s ease-out forwards;
}

.scroll-reveal-rotate {
    opacity: 0;
}

.scroll-reveal-rotate.active {
    animation: rotateIn 0.55s ease-out forwards;
}

.scroll-reveal-zoom {
    opacity: 0;
}

.scroll-reveal-zoom.active {
    animation: zoomInScale 0.55s ease-out forwards;
}

.scroll-reveal-flip {
    opacity: 0;
}

.scroll-reveal-flip.active {
    animation: flipInX 0.55s ease-out forwards;
}

.scroll-reveal-roll {
    opacity: 0;
}

.scroll-reveal-roll.active {
    animation: rollInLeft 0.55s ease-out forwards;
}

/* Staggered animations for multiple elements */
.card-stagger {
    animation-delay: 0;
}

.card-stagger:nth-child(2) {
    animation-delay: 0.08s;
}

.card-stagger:nth-child(3) {
    animation-delay: 0.16s;
}

.card-stagger:nth-child(4) {
    animation-delay: 0.24s;
}

.card-stagger:nth-child(5) {
    animation-delay: 0.32s;
}

.card-stagger:nth-child(6) {
    animation-delay: 0.4s;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */

/* ─── TABLET GRANDE (≤ 1024px) ─── */
@media (max-width: 1024px) {
    .empresas-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .contacto-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contacto-info {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }

    .contacto-social {
        grid-column: 1 / -1;
    }
}

/* ─── TABLET / MÓVIL (≤ 768px) ─── */
@media (max-width: 768px) {

    /* NAV */
    .nav-menu { display: none; }
    .hamburger { display: flex; }
    .nav-container { padding: 1rem 1.2rem; }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 58px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.99);
        backdrop-filter: blur(20px);
        padding: 0.5rem 1.2rem 1.5rem;
        gap: 0;
        border-bottom: 2px solid var(--accent-color);
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        z-index: 999;
        animation: slideDown 0.22s ease-out;
    }

    .nav-menu.active .nav-link {
        padding: 0.9rem 0;
        border-bottom: 1px solid var(--border-color);
        font-size: 1rem;
    }

    .nav-menu.active .nav-link:last-child { border-bottom: none; }
    .nav-menu.active .nav-link::after { display: none; }

    /* SIDEBAR */
    .social-sidebar { display: none; }
    .truck-left, .truck-right { display: none; }

    /* HERO */
    .hero { margin-top: 58px; min-height: 90vh; }
    .hero-content { padding: 0 1.2rem; gap: 1.2rem; }
    .hero-title { font-size: clamp(2.2rem, 9vw, 3.4rem); line-height: 1.05; }
    .hero-subtitle { font-size: 0.92rem; line-height: 1.65; margin-bottom: 1.2rem; }
    .hero-buttons { flex-direction: column; align-items: center; gap: 0.8rem; }
    .btn { width: 100%; max-width: 280px; padding: 0.9rem 1.5rem; font-size: 0.88rem; }
    .hero-visual { display: none; }
    #canvas-bg { display: none; }

    /* SECCIONES - padding general */
    .empresas    { padding: 3.5rem 1.2rem; }
    .historia    { padding: 3.5rem 1.2rem 3rem; }
    .institucional { padding: 3.5rem 1.2rem; }
    .contacto    { padding: 3.5rem 1.2rem; }
    .footer      { padding: 2.5rem 1.2rem 1.2rem; margin-top: 0; }

    /* HEADERS */
    .section-header { margin-bottom: 2rem; }
    .section-header h2,
    .institutional-header h2,
    .contacto-header h2 { font-size: clamp(1.6rem, 6vw, 2.2rem); }
    .section-header p,
    .contacto-header p { font-size: 0.9rem; }

    /* EMPRESAS */
    .empresas-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        max-width: 480px;
        margin: 0 auto;
    }
    .card-background { height: 150px; }
    .card-content { padding: 1.2rem; }
    .card-content h3 { font-size: 1.25rem; }
    .card-features li { font-size: 0.85rem; margin-bottom: 0.6rem; }
    .btn-card { padding: 0.75rem 1.5rem; font-size: 0.82rem; }

    /* TIMELINE - vertical */
    .timeline {
        display: block;
        height: auto;
        padding: 1.5rem 0;
    }
    .timeline::before {
        left: 14px; top: 0; bottom: 0;
        width: 2px; height: 100%;
        background: linear-gradient(to bottom, var(--accent-color), transparent);
        transform: none;
        right: auto;
    }
    .timeline::after {
        left: 14px; top: 0;
        width: 3px;
        height: var(--timeline-progress);
        background: linear-gradient(to bottom, #000, var(--accent-color));
        transform: none;
    }
    .timeline-item {
        display: block;
        position: relative;
        height: auto;
        padding: 0;
        margin-bottom: 2rem;
        opacity: 0;
        animation: none;
    }
    .timeline-item.active { animation: slide-in-left 0.45s ease-out forwards; }
    .timeline-item::after { display: none; }
    .timeline-marker {
        position: absolute;
        top: 2px; left: 0px;
        transform: none;
        width: 28px; height: 28px;
        font-size: 0.7rem;
        outline: none;
    }
    .timeline-item:hover .timeline-marker { transform: scale(1.15); }
    .timeline-content {
        position: static;
        width: calc(100% - 52px);
        margin-left: 52px;
        padding: 1rem 1.1rem;
        bottom: auto; top: auto;
        opacity: 1;
        display: block;
    }
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        top: auto; bottom: auto; left: auto; right: auto;
    }
    .timeline-item:hover .timeline-content,
    .timeline-item:nth-child(odd):hover .timeline-content,
    .timeline-item:nth-child(even):hover .timeline-content {
        transform: translateX(4px);
    }
    .timeline-content h3 { font-size: 0.95rem; color: var(--accent-color); margin-bottom: 0.4rem; }
    .timeline-content p  { font-size: 0.83rem; line-height: 1.55; display: block; overflow: visible; -webkit-line-clamp: unset; }

    /* INSTITUCIONAL */
    .institutional-header { margin-bottom: 2rem; }
    .leadership-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
        max-width: 100%;
        margin-bottom: 1.5rem;
    }
    .ceo-card img { height: 180px; }
    .ceo-info { padding: 0.8rem; }
    .ceo-info h3 { font-size: 0.88rem; }
    .ceo-info p  { font-size: 0.8rem; }

    .institutional-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
        margin-bottom: 2rem;
    }
    .institutional-card { padding: 1.4rem 1rem; }
    .institutional-card .card-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }
    .institutional-card h3 { font-size: 1.1rem; }
    .institutional-card p  { font-size: 0.82rem; }

    .operational-info { padding: 1.4rem 0.9rem; }
    .operation-details { grid-template-columns: repeat(2, 1fr); gap: 0.7rem; }
    .detail-item { padding: 0.45rem 0.25rem; }
    .detail-item .number { font-size: 1.7rem; }
    .detail-item .label  { font-size: 0.8rem; }

    /* CONTACTO */
    .contacto-content { grid-template-columns: 1fr; gap: 1.5rem; }
    .contacto-info { display: flex; flex-direction: column; gap: 0.7rem; }
    .contacto-form-wrapper { padding: 1.5rem 1.2rem; border-radius: 14px; }
    .form-row { grid-template-columns: 1fr; gap: 1rem; }
    .form-group input, .form-group textarea { font-size: 0.9rem; padding: 0.8rem 0.9rem; }
    .btn-send { padding: 1rem; font-size: 0.88rem; }
    .contacto-social { padding: 0.5rem 0 0; }

    /* FOOTER */
    .footer-container { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    .footer-bottom { font-size: 0.78rem; }
}

/* ─── TELÉFONO (≤ 480px) ─── */
@media (max-width: 480px) {

    /* HERO */
    .hero { min-height: 88vh; }
    .hero-content { padding: 0 1rem; }
    .hero-title { font-size: clamp(1.8rem, 9.5vw, 2.6rem); }
    .hero-subtitle { font-size: 0.85rem; }
    .btn { max-width: 100%; }

    /* NAV */
    .nav-container { padding: 0.85rem 1rem; }
    .logo { font-size: 1rem; }
    .logo i { font-size: 1.3rem; }

    /* SECCIONES */
    .empresas    { padding: 2.5rem 1rem; }
    .historia    { padding: 2.5rem 1rem 2rem; }
    .institucional { padding: 2.5rem 1rem; }
    .contacto    { padding: 2.5rem 1rem; }
    .footer      { padding: 2rem 1rem 1rem; }

    /* HEADERS */
    .section-header h2,
    .institutional-header h2,
    .contacto-header h2 { font-size: clamp(1.4rem, 7vw, 1.9rem); }
    .section-header p,
    .contacto-header p { font-size: 0.85rem; }
    .contacto-eyebrow { font-size: 0.7rem; }

    /* EMPRESAS */
    .card-background { height: 130px; }
    .card-content { padding: 1rem; }
    .card-content h3 { font-size: 1.1rem; }

    /* TIMELINE */
    .timeline-marker { width: 22px; height: 22px; font-size: 0.6rem; left: 3px; top: 2px; }
    .timeline::before, .timeline::after { left: 13px; }
    .timeline-content {
        width: calc(100% - 42px);
        margin-left: 42px;
        padding: 0.85rem 0.9rem;
    }
    .timeline-content h3 { font-size: 0.85rem; }
    .timeline-content p  { font-size: 0.78rem; }
    .timeline-tag { font-size: 0.56rem; }

    /* INSTITUCIONAL */
    .leadership-row {
        grid-template-columns: repeat(2, minmax(120px, 1fr));
        max-width: 360px;
        margin: 0 auto 1.5rem;
        gap: 0.55rem;
    }
    .ceo-card img { height: 150px; }
    .ceo-info { padding: 0.65rem 0.55rem 0.75rem; }
    .ceo-info h3 { font-size: 0.78rem; }
    .ceo-info p  { font-size: 0.72rem; }
    .institutional-grid { grid-template-columns: 1fr; gap: 0.8rem; }
    .operational-info { padding: 1rem 0.65rem; }
    .operation-details { grid-template-columns: repeat(2, 1fr); gap: 0.55rem; }
    .detail-item { padding: 0.35rem 0.2rem; }
    .detail-item .number { font-size: 1.45rem; }

    /* CONTACTO */
    .contacto-form-wrapper { padding: 1.2rem 1rem; }
    .form-header h3 { font-size: 1rem; }
    .form-group label { font-size: 0.75rem; }
    .info-card { padding: 0.9rem 1rem; gap: 0.7rem; }
    .info-icon { width: 38px; height: 38px; min-width: 38px; font-size: 0.9rem; border-radius: 9px; }
    .info-text h3 { font-size: 0.72rem; }
    .info-text p  { font-size: 0.84rem; }

    /* FOOTER */
    .footer-container { grid-template-columns: 1fr; gap: 1.2rem; }
    .footer-section h4 { font-size: 0.95rem; margin-bottom: 0.8rem; }
    .footer-section p,
    .footer-section ul li a { font-size: 0.82rem; }
}

/* ─── TELÉFONO PEQUEÑO (≤ 360px) ─── */
@media (max-width: 360px) {
    .hero-title { font-size: 1.7rem; }
    .hero-subtitle { font-size: 0.8rem; }
    .nav-container { padding: 0.75rem 0.8rem; }
    .logo { font-size: 0.92rem; gap: 0.5rem; }
    .logo i { font-size: 1.15rem; }
    .empresas { padding: 2rem 0.8rem; }
    .historia, .institucional, .contacto { padding: 2rem 0.8rem; }
    .card-background { height: 110px; }
    .section-header h2,
    .institutional-header h2,
    .contacto-header h2 { font-size: 1.3rem; }

    .leadership-row {
        grid-template-columns: repeat(2, minmax(110px, 1fr));
        max-width: 320px;
        gap: 0.45rem;
    }

    .ceo-card img { height: 130px; }
    .ceo-info { padding: 0.55rem 0.45rem 0.65rem; }
    .ceo-info h3 { font-size: 0.72rem; }
    .ceo-info p  { font-size: 0.68rem; }
}