/* CSS VARIABLES & RESET */
:root {
    --color-primary: #e30613; 
    --color-primary-dark: #aa0007;
    --color-primary-glow: rgba(227, 6, 19, 0.4);
    --color-black: #030303;
    --color-dark-grey: #0a0a0a;
    --color-mid-grey: #1a1a1a;
    --color-border: #2a2a2a;
    --color-light-grey: #e0e0e0;
    --color-white: #ffffff;
    --color-silver: #8a8a8a;
    
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-black);
    color: var(--color-light-grey);
    line-height: 1.7;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.text-red { color: var(--color-primary); }
.text-glow { text-shadow: 0 0 15px var(--color-primary-glow); }
.text-center { text-align: center; }
.section { padding: 100px 0; position: relative; }

/* === MEJORA 3: PRELOADER === */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--color-black);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.8s ease;
}

.loader-circle {
    width: 90px; height: 90px;
    border: 2px solid rgba(255,255,255,0.05);
    border-radius: 50%;
    position: relative;
    margin-bottom: 25px;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

.loader-rpm {
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    border: 3px solid transparent;
    border-top-color: var(--color-primary);
    border-right-color: var(--color-primary);
    border-radius: 50%;
    animation: rpmSpin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    filter: drop-shadow(0 0 10px var(--color-primary));
}

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

.loader-text {
    font-family: var(--font-heading);
    letter-spacing: 5px;
    font-size: 1.1rem;
    color: var(--color-white);
    animation: pulseText 1.5s infinite;
}

@keyframes pulseText {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; text-shadow: 0 0 15px var(--color-primary-glow); }
}

/* PREMIUM DARK CARBON PATTERN */
.bg-dark {
    background-color: var(--color-dark-grey);
    background-image: 
        linear-gradient(45deg, rgba(255,255,255,0.015) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.015) 75%, rgba(255,255,255,0.015)),
        linear-gradient(45deg, rgba(255,255,255,0.015) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.015) 75%, rgba(255,255,255,0.015));
    background-size: 10px 10px;
    background-position: 0 0, 5px 5px;
}

/* PREMIUM CARBON FIBER TEXTURE */
.bg-texture {
    background-color: var(--color-black);
    background-image: 
        radial-gradient(black 15%, transparent 16%),
        radial-gradient(black 15%, transparent 16%),
        radial-gradient(rgba(255,255,255,0.04) 15%, transparent 20%),
        radial-gradient(rgba(255,255,255,0.04) 15%, transparent 20%);
    background-position: 0 0, 8px 8px, 0 1px, 8px 9px;
    background-size: 16px 16px;
    box-shadow: inset 0 0 80px rgba(0,0,0,0.9);
}

/* TYPOGRAPHY (Mejora 4: Tracking incrementado) */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 700;
}

.section-title {
    font-size: 3.2rem;
    text-align: center;
    margin-bottom: 5px;
    color: var(--color-white);
    letter-spacing: 5px; /* Tracking incrementado para look premium */
}

.section-title.text-left { text-align: left; }

.title-line {
    width: 60px; height: 3px;
    background-color: var(--color-primary);
    margin: 15px 0 30px 0;
    box-shadow: 0 0 10px var(--color-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--color-silver);
    margin-bottom: 60px;
    font-size: 1.2rem;
    font-weight: 300;
    letter-spacing: 1px;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(227, 6, 19, 0.1);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-family: var(--font-heading);
    letter-spacing: 3px;
    font-size: 0.85rem;
    text-transform: uppercase;
    margin-bottom: 20px;
    border-radius: 2px;
}

/* BUTTONS */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 500;
    text-transform: uppercase;
    border-radius: 2px;
    cursor: pointer;
    text-align: center;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: background-color 0.4s, color 0.4s, border-color 0.4s, transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn-lg { padding: 16px 40px; font-size: 1.2rem; }

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
    box-shadow: 0 4px 15px var(--color-primary-glow);
}

.btn-primary::before {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease; z-index: -1;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: 0 6px 25px rgba(227, 6, 19, 0.7);
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: inset 0 0 15px rgba(227, 6, 19, 0.2);
}

/* HEADER */
.header {
    background-color: rgba(3, 3, 3, 0.9);
    position: fixed; width: 100%; top: 0; z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
}

.header-container { display: flex; justify-content: space-between; align-items: center; height: 110px; }

.logo-img {
    height: 85px; background-color: var(--color-white); padding: 8px;
    border-radius: 4px; transition: var(--transition);
    box-shadow: 0 0 10px rgba(255,255,255,0.1);
}

.logo-img:hover { box-shadow: 0 0 20px rgba(255,255,255,0.6); transform: scale(1.02); }

.nav-menu ul { display: flex; gap: 35px; }

.nav-menu a {
    font-family: var(--font-heading); font-weight: 500; font-size: 1.05rem;
    text-transform: uppercase; color: var(--color-light-grey);
    letter-spacing: 2px; position: relative; padding-bottom: 5px;
}

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

.nav-menu a:hover { color: var(--color-white); }
.nav-menu a:hover::after { width: 100%; }

/* HERO SECTION (Mejora 2: Parallax Ready) */
.hero {
    height: 100vh; min-height: 750px;
    background-color: var(--color-dark-grey);
    background-image: url('img/carros-black-bg.png'); 
    background-size: cover; background-position: center 0px; 
    /* Removemos fixed para usar el parallax real con JS */
    display: flex; align-items: center; justify-content: center;
    position: relative; padding-top: 110px;
    overflow: hidden;
}

.hero-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.7) 50%, rgba(0,0,0,0.95) 100%);
    z-index: 1;
}

.hero-content { position: relative; z-index: 2; max-width: 900px; text-align: center; }

.hero-title {
    font-size: 5.5rem; line-height: 1.05; margin-bottom: 25px;
    color: var(--color-white); letter-spacing: 3px;
}

.hero-subtitle {
    font-family: var(--font-heading); font-size: 1.6rem;
    color: var(--color-silver); letter-spacing: 6px;
    text-transform: uppercase; margin-bottom: 25px;
}

.hero-text {
    font-size: 1.25rem; font-weight: 300; margin-bottom: 45px;
    color: #ccc; max-width: 700px; margin-left: auto; margin-right: auto;
}

/* CAR ANIMATION DIVIDER */
.animation-divider {
    height: 8px; background-color: var(--color-mid-grey);
    position: relative; width: 100%; overflow: hidden; z-index: 10;
    border-top: 1px solid rgba(255,255,255,0.05); border-bottom: 1px solid rgba(0,0,0,0.8);
}
.road-line {
    position: absolute; top: 50%; left: 0; width: 100%; height: 1px;
    background: dashed 10px var(--color-border); transform: translateY(-50%);
}
.car-wrapper {
    position: absolute; bottom: -15px; left: -200px;
    animation: driveCar 8s infinite linear; display: flex; align-items: center;
}
.car-svg { width: 120px; height: auto; filter: drop-shadow(0 5px 10px rgba(0,0,0,0.5)); }
.speed-trail {
    position: absolute; right: 110px; top: 28px; width: 150px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary)); filter: blur(1px);
}
@keyframes driveCar { 0% { left: -200px; } 100% { left: 110vw; } }

/* STATS BANNER */
.stats-banner {
    background: rgba(10, 10, 10, 0.95); padding: 60px 0;
    border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border);
    position: relative;
}
.stats-banner::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}
.stats-container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item { padding: 20px; border-right: 1px solid var(--color-border); }
.stat-item:last-child { border-right: none; }
.stat-number { font-size: 3.5rem; color: var(--color-white); margin-bottom: 0; line-height: 1; font-weight: 800; }
.stat-label { font-size: 1rem; font-family: var(--font-heading); color: var(--color-silver); text-transform: uppercase; letter-spacing: 1.5px; margin-top: 10px; }

/* ABOUT SECTION */
.about-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-text p { margin-bottom: 20px; font-size: 1.1rem; color: #bbb; }
.premium-list { margin-top: 30px; }
.premium-list li { position: relative; padding-left: 35px; margin-bottom: 18px; font-size: 1.1rem; font-weight: 600; color: var(--color-light-grey); }
.premium-list li::before { content: '►'; position: absolute; left: 0; top: 2px; color: var(--color-primary); font-size: 0.9rem; }
.about-visual { display: flex; justify-content: center; }
.glass-panel {
    background: rgba(20, 20, 20, 0.4); border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(255, 255, 255, 0.2); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    padding: 60px; border-radius: 4px; text-align: center; box-shadow: 0 25px 50px rgba(0,0,0,0.6);
    position: relative; overflow: hidden;
}
.glass-panel::after {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(227,6,19,0.1) 0%, transparent 60%); z-index: -1;
}
.glass-panel h3 { margin-top: 30px; font-size: 1.5rem; letter-spacing: 3px; color: var(--color-white); }
.engine-pulse { position: relative; width: 120px; height: 120px; margin: 0 auto; display: flex; align-items: center; justify-content: center; }
.icon-center { font-size: 3rem; z-index: 2; filter: drop-shadow(0 0 10px rgba(255,255,255,0.3)); }
.circle { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: 50%; border: 2px solid var(--color-primary); opacity: 0; }
.pulse-1 { animation: pulseAnim 2s infinite; }
.pulse-2 { animation: pulseAnim 2s infinite 1s; }
@keyframes pulseAnim { 0% { transform: scale(0.5); opacity: 0.8; } 100% { transform: scale(1.5); opacity: 0; } }

/* EXPERTISE & SERVICES GLOBALS (Mejora 5: Dynamic Glare) */
.glass-interactive, .glass-card {
    position: relative;
    overflow: hidden;
}

/* El pseudo-elemento que crea el reflejo siguiendo el mouse */
.glass-interactive::before, .glass-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
        rgba(255,255,255,0.06), 
        transparent 40%
    );
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
    z-index: 0;
}

.glass-interactive:hover::before, .glass-card:hover::before {
    opacity: 1;
}

/* Asegurar que el texto quede sobre el brillo */
.glass-interactive > *, .glass-card > * { position: relative; z-index: 2; }

/* EXPERTISE SECTION */
.expertise-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; margin-top: 40px; }
.expertise-item {
    background: linear-gradient(180deg, rgba(20,20,20,1) 0%, rgba(10,10,10,1) 100%);
    border: 1px solid var(--color-border); border-top: 1px solid rgba(255,255,255,0.1);
    padding: 40px 30px; border-radius: 4px; text-align: center; transition: var(--transition);
}
.expertise-item:hover { border-color: var(--color-primary); transform: translateY(-5px); box-shadow: 0 10px 25px rgba(227, 6, 19, 0.15); }
.expertise-icon { font-size: 3rem; margin-bottom: 20px; filter: drop-shadow(0 0 8px rgba(255,255,255,0.1)); }
.expertise-item h4 { color: var(--color-white); font-size: 1.3rem; margin-bottom: 15px; letter-spacing: 1px; }
.expertise-item p { color: var(--color-silver); font-size: 0.95rem; line-height: 1.6; }

/* SERVICES */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.glass-card {
    background: rgba(15, 15, 15, 0.6); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    padding: 50px 30px; border-radius: 2px; text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.08); border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.card-glow {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(227, 6, 19, 0.15) 0%, transparent 60%);
    opacity: 0; transition: var(--transition); z-index: 1; /* Abajo del texto, arriba del background */
}
.glass-card:hover { transform: translateY(-10px); border-color: rgba(227, 6, 19, 0.5); box-shadow: 0 15px 35px rgba(0,0,0,0.9); }
.glass-card:hover .card-glow { opacity: 1; }
.service-icon-wrapper {
    width: 90px; height: 90px; margin: 0 auto 25px; background: linear-gradient(145deg, #111, #1a1a1a);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    border: 2px solid var(--color-border); transition: var(--transition); box-shadow: inset 0 0 15px rgba(0,0,0,0.5);
}
.glass-card:hover .service-icon-wrapper { border-color: var(--color-primary); box-shadow: 0 0 20px var(--color-primary-glow), inset 0 0 15px rgba(227,6,19,0.2); transform: scale(1.1); }
.service-icon { font-size: 2.2rem; }
.service-card h3 { font-size: 1.6rem; margin-bottom: 15px; color: var(--color-white); letter-spacing: 1px;}
.service-card p { color: var(--color-silver); font-size: 1rem; font-weight: 300; }

/* FACILITIES */
.facilities-container { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: center; }
.image-wrapper { position: relative; border-radius: 2px; overflow: hidden; }
.tech-border { border: 1px solid var(--color-border); display: block; }
.scan-line {
    position: absolute; top: 0; left: 0; width: 100%; height: 5px;
    background: rgba(227, 6, 19, 0.5); box-shadow: 0 0 15px var(--color-primary); animation: scanAnim 4s infinite linear;
}
@keyframes scanAnim { 0% { top: 0; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { top: 100%; opacity: 0; } }
.specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 25px; margin-top: 30px; }
.spec-item { background: rgba(255,255,255,0.02); padding: 20px; border-left: 3px solid var(--color-primary); }
.spec-item h4 { color: var(--color-white); font-size: 1.2rem; margin-bottom: 5px; }
.spec-item p { font-size: 0.9rem; color: var(--color-silver); margin: 0; }

/* FOOTER */
.footer { background-color: #000; padding: 80px 0 30px; position: relative; }
.footer-top-line { position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary), var(--color-primary-dark)); }
.footer-container { display: grid; grid-template-columns: 1fr 1.5fr 1fr; gap: 50px; margin-bottom: 60px; }
.footer-logo { height: 100px; margin-bottom: 20px; background-color: var(--color-white); padding: 10px; border-radius: 4px; box-shadow: 0 0 15px rgba(255,255,255,0.1); }
.brand-slogan { font-family: var(--font-heading); color: var(--color-white); font-size: 1.2rem; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 10px; }
.brand-desc { color: var(--color-silver); font-size: 0.95rem; }
.footer-title { font-family: var(--font-heading); color: var(--color-white); font-size: 1.4rem; margin-bottom: 25px; position: relative; padding-bottom: 12px; letter-spacing: 1px; }
.footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 50px; height: 2px; background-color: var(--color-primary); }
.contact-item { display: flex; align-items: center; margin-bottom: 20px; }
.email-item { word-wrap: break-word; overflow-wrap: break-word; align-items: flex-start; }
.contact-icon { width: 35px; height: 35px; margin-right: 15px; border-radius: 50%; flex-shrink: 0; }
.email-item .contact-icon { margin-top: 2px; }
.contact-item a { color: #ccc; font-size: 1.05rem; }
.email-link { word-break: break-all; line-height: 1.4; }
.hover-red:hover { color: var(--color-primary); text-shadow: 0 0 8px rgba(227,6,19,0.4); }
.link-list li { margin-bottom: 15px; }
.link-list a { color: #ccc; font-size: 1.05rem; display: inline-block; }
.link-list a:hover { color: var(--color-primary); transform: translateX(5px); }

/* DEV CREDITS */
.footer-bottom { text-align: center; padding-top: 25px; border-top: 1px solid var(--color-border); color: var(--color-silver); font-size: 0.9rem; letter-spacing: 1px; }
.dev-credit { margin-top: 12px; font-size: 0.85rem; color: #555; }
.dev-credit a { color: var(--color-primary); font-weight: 600; font-family: var(--font-heading); letter-spacing: 1px; }
.dev-credit a:hover { text-shadow: 0 0 8px var(--color-primary-glow); color: #ff3344; }

/* ANIMATIONS & UTILS */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.25, 0.8, 0.25, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero-title { font-size: 4.5rem; }
    .footer-container { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 992px) {
    .about-container, .facilities-container { grid-template-columns: 1fr; }
    .about-visual { order: -1; }
    .stats-container { grid-template-columns: 1fr 1fr; }
    .stat-item:nth-child(2) { border-right: none; }
    .stat-item:nth-child(3), .stat-item:nth-child(4) { border-top: 1px solid var(--color-border); }
}
@media (max-width: 768px) {
    .header-container { height: 90px; }
    .logo-img { height: 65px; }
    .nav-menu { display: none; }
    .hero { padding-top: 90px; }
    .hero-title { font-size: 3.2rem; }
    .hero-subtitle { font-size: 1.2rem; letter-spacing: 2px; }
    .footer-container { grid-template-columns: 1fr; gap: 40px; }
}