/* ============================================
   HOME PAGE — Premium animations & hero
   ============================================ */

/* --- Navbar mejorada --- */
.site-nav {
    transition: background 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

.site-nav.is-scrolled {
    background: rgba(4, 12, 16, 0.88);
    backdrop-filter: blur(18px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    /* Menú móvil: estilos base en responsive.css */
}

/* --- Hero premium --- */
.hero-3d {
    min-height: 100vh;
    background: var(--gradient-hero);
    padding: 180px clamp(22px, 5vw, 80px) 100px;
    position: relative;
    overflow: hidden;
}

.hero-3d::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.55;
    pointer-events: none;
    animation: gridDrift 20s linear infinite;
}

.hero-3d::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(8, 116, 167, 0.18) 0%, transparent 70%);
    top: -200px;
    right: -100px;
    pointer-events: none;
    animation: orbFloat 8s ease-in-out infinite alternate;
}

.hero-orbs {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.35;
}

.hero-orb--1 {
    width: 320px;
    height: 320px;
    background: rgba(193, 190, 40, 0.25);
    bottom: 10%;
    left: -80px;
    animation: orbFloat 10s ease-in-out infinite alternate-reverse;
}

.hero-orb--2 {
    width: 240px;
    height: 240px;
    background: rgba(8, 116, 167, 0.3);
    top: 30%;
    right: 15%;
    animation: orbFloat 7s ease-in-out 1s infinite alternate;
}

@keyframes gridDrift {
    from { transform: translate(0, 0); }
    to   { transform: translate(48px, 48px); }
}

@keyframes orbFloat {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(30px, -20px) scale(1.08); }
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--spacing-xl);
    max-width: 1280px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* --- Título animado por palabras (evita cortar "eléctrica") --- */
.hero-title {
    display: flex;
    flex-wrap: wrap;
    gap: 0.28em 0.42em;
    line-height: 1.05;
}

.hero-word {
    display: inline-block;
    opacity: 0;
    transform: translateY(70px) rotateX(-55deg);
    transform-origin: bottom center;
    color: var(--color-white);
    white-space: nowrap;
    margin-right: 0.35em;
}

.hero-word.is-visible {
    animation: wordReveal 0.85s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-word--gold {
    color: var(--color-gold);
    text-shadow: 0 0 40px rgba(193, 190, 40, 0.35);
}

@keyframes wordReveal {
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }
}

/* Legacy char classes (fallback) */
.hero-title .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(80px) rotateX(-90deg);
    transform-origin: bottom center;
    color: var(--color-white);
}

.hero-title .char.is-visible {
    animation: charReveal 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-title .char--gold {
    color: var(--color-gold);
}

@keyframes charReveal {
    to {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }
}

.hero-copy {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s ease 0.6s, transform 0.8s ease 0.6s;
}

.hero-copy.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-eyebrow {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s ease 0.2s, transform 0.6s ease 0.2s;
}

.hero-eyebrow.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.hero-actions {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease 0.9s, transform 0.8s ease 0.9s;
}

.hero-actions.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Marquee de texto en movimiento --- */
.hero-marquee {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    overflow: hidden;
    border-top: 1px solid var(--line-color);
    background: rgba(4, 12, 16, 0.5);
    backdrop-filter: blur(8px);
    padding: 14px 0;
    z-index: 2;
}

.marquee-track {
    display: flex;
    width: max-content;
    animation: marqueeScroll 28s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

.marquee-item {
    display: inline-flex;
    align-items: center;
    gap: 2rem;
    padding-right: 2rem;
    white-space: nowrap;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(237, 243, 241, 0.45);
}

.marquee-item strong {
    color: var(--color-gold);
    font-weight: 700;
}

.marquee-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    flex-shrink: 0;
}

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

/* --- Viewer 3D shell --- */
.viewer-shell {
    background:
        radial-gradient(ellipse at 25% 15%, rgba(8, 116, 167, 0.22), transparent 55%),
        radial-gradient(ellipse at 75% 85%, rgba(193, 190, 40, 0.14), transparent 45%),
        rgba(4, 15, 19, 0.72);
    border: 1px solid rgba(8, 116, 167, 0.35);
    box-shadow:
        0 30px 90px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(193, 190, 40, 0.08) inset,
        0 0 60px rgba(8, 116, 167, 0.12);
    min-height: 470px;
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: visible;
    opacity: 0;
    transform: translateX(40px) scale(0.97);
    transition: opacity 1s ease 0.4s, transform 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s;
}

.viewer-shell.is-visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.viewer-frame {
    --tilt-x: 0deg;
    --tilt-y: 0deg;
    position: relative;
    height: 100%;
    min-height: 470px;
    border-radius: inherit;
    overflow: hidden;
    transform: perspective(1100px) rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
    transition: transform 0.35s ease-out;
    will-change: transform;
}

.viewer-shell::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, rgba(8, 116, 167, 0.7), rgba(193, 190, 40, 0.45), rgba(8, 116, 167, 0.5));
    background-size: 200% 200%;
    animation: borderGlow 5s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 0;
}

@keyframes borderGlow {
    0%, 100% { background-position: 0% 50%; opacity: 0.65; }
    50%       { background-position: 100% 50%; opacity: 1; }
}

.viewer-shell::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(8, 116, 167, 0.12) 0%, transparent 45%, rgba(193, 190, 40, 0.06) 100%);
    pointer-events: none;
    z-index: 2;
}

.viewer-stage {
    position: relative;
    height: 470px;
    overflow: hidden;
}

#model-canvas {
    display: block;
    height: 100%;
    width: 100%;
    position: relative;
    z-index: 1;
}

.viewer-media {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 0;
    position: relative;
    z-index: 1;
}

.viewer-media--embed {
    min-height: 470px;
}

.viewer-media--image {
    transform: scale(1.02);
    transition: transform 8s ease;
}

.viewer-shell--image:hover .viewer-media--image {
    transform: scale(1.06);
}

.viewer-glow {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 50% 60%, rgba(8, 116, 167, 0.25), transparent 55%),
        radial-gradient(circle at 30% 30%, rgba(193, 190, 40, 0.12), transparent 40%);
    pointer-events: none;
    z-index: 2;
    mix-blend-mode: screen;
}

.viewer-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(193, 190, 40, 0.8), transparent),
        radial-gradient(1px 1px at 60% 70%, rgba(8, 116, 167, 0.9), transparent),
        radial-gradient(1px 1px at 80% 20%, rgba(255, 255, 255, 0.6), transparent),
        radial-gradient(1px 1px at 40% 85%, rgba(193, 190, 40, 0.7), transparent);
    background-size: 100% 100%;
    animation: particleDrift 12s linear infinite;
    opacity: 0.55;
}

@keyframes particleDrift {
    from { transform: translateY(0); }
    to   { transform: translateY(-20px); }
}

.viewer-scanlines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255, 255, 255, 0.015) 2px,
        rgba(255, 255, 255, 0.015) 4px
    );
    pointer-events: none;
    z-index: 4;
    opacity: 0.4;
}

.viewer-corners span {
    position: absolute;
    width: 22px;
    height: 22px;
    border-color: rgba(193, 190, 40, 0.75);
    border-style: solid;
    z-index: 5;
    pointer-events: none;
}

.viewer-corners span:nth-child(1) { top: 14px; left: 14px; border-width: 2px 0 0 2px; }
.viewer-corners span:nth-child(2) { top: 14px; right: 14px; border-width: 2px 2px 0 0; }
.viewer-corners span:nth-child(3) { bottom: 58px; left: 14px; border-width: 0 0 2px 2px; }
.viewer-corners span:nth-child(4) { bottom: 58px; right: 14px; border-width: 0 2px 2px 0; }

.viewer-loader {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    color: rgba(237, 243, 241, 0.7);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    z-index: 6;
    background: rgba(4, 12, 16, 0.75);
}

.viewer-loader-ring {
    width: 42px;
    height: 42px;
    border: 2px solid rgba(8, 116, 167, 0.25);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

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

.viewer-label {
    align-items: center;
    color: rgba(237, 243, 241, 0.82);
    display: flex;
    flex-wrap: wrap;
    font-size: 0.68rem;
    gap: 8px;
    left: 18px;
    letter-spacing: 0.13em;
    position: absolute;
    text-transform: uppercase;
    top: 18px;
    z-index: 10;
    max-width: calc(100% - 36px);
}

.viewer-badge {
    background: rgba(8, 116, 167, 0.35);
    border: 1px solid rgba(8, 116, 167, 0.6);
    border-radius: 4px;
    color: var(--color-gold);
    font-style: normal;
    font-weight: 700;
    padding: 3px 8px;
}

.control-bar--media {
    justify-content: center;
}

.control-hint {
    color: rgba(237, 243, 241, 0.55);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.control-hint i {
    color: var(--color-gold);
    margin-right: 6px;
}

.live-state {
    align-items: center;
    bottom: 58px;
    display: flex;
    font-size: 0.7rem;
    gap: 8px;
    letter-spacing: 0.1em;
    position: absolute;
    right: 18px;
    text-transform: uppercase;
    z-index: 10;
    color: rgba(237, 243, 241, 0.72);
}

.dot {
    background: var(--color-gold);
    border-radius: 50%;
    height: 7px;
    width: 7px;
    animation: pulse 2s ease infinite;
}

.dot.connected {
    background: #52d273;
    box-shadow: 0 0 12px #52d273;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.6; transform: scale(0.85); }
}

.control-bar {
    align-items: center;
    background: rgba(7, 18, 23, 0.94);
    border-top: 1px solid var(--line-color);
    bottom: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: space-between;
    padding: 14px 18px;
    position: absolute;
    width: 100%;
    z-index: 10;
}

.control-group {
    align-items: center;
    display: flex;
    gap: 9px;
}

.control-group label {
    color: rgba(237, 243, 241, 0.56);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.control-button {
    background: transparent;
    border: 1px solid var(--line-color);
    color: var(--color-white);
    cursor: pointer;
    font: inherit;
    font-size: 0.7rem;
    padding: 7px 10px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.control-button:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.control-button.active {
    border-color: var(--color-gold);
    color: var(--color-gold);
}

input[type=range] {
    accent-color: var(--color-gold);
    width: 90px;
}

/* --- Stats animados --- */
.stats-section {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-light) 100%);
    color: var(--color-text-primary);
    padding: var(--spacing-xl) clamp(22px, 5vw, 80px);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold), var(--color-accent));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 1280px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-left: 1px solid rgba(7, 18, 23, 0.08);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-item:first-child { border-left: none; }

.stat-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(8, 116, 167, 0.1);
    color: var(--color-accent);
    font-size: 1.1rem;
    transition: transform 0.4s ease, background 0.3s ease;
}

.stat-item.is-visible .stat-icon {
    animation: statIconPop 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

@keyframes statIconPop {
    from { transform: scale(0.5); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

.stat-item:hover .stat-icon {
    background: rgba(193, 190, 40, 0.15);
    color: var(--color-gold);
    transform: scale(1.08);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    font-variant-numeric: tabular-nums;
    min-height: 1.2em;
}

.stat-item.is-visible .stat-number {
    animation: statNumberGlow 2s ease 0.4s;
}

@keyframes statNumberGlow {
    0%, 100% { text-shadow: none; }
    50%       { text-shadow: 0 0 24px rgba(8, 116, 167, 0.25); }
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    opacity: 0.75;
    text-transform: uppercase;
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.stat-bar {
    height: 3px;
    background: rgba(7, 18, 23, 0.08);
    border-radius: 3px;
    margin-top: var(--spacing-md);
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    border-radius: 3px;
    transition: width 0.1s linear;
    width: 0;
}

/* --- Carrusel 3D --- */
.carousel-section {
    background: var(--color-bg-secondary);
    padding: 95px clamp(22px, 5vw, 80px);
    overflow: hidden;
}

.carousel-section .section-heading h2 {
    color: var(--color-white);
}

.carousel-section .section-heading .eyebrow {
    color: var(--color-gold);
}

.carousel-3d-wrap {
    margin: 0 auto;
    max-width: 1280px;
    position: relative;
}

.carousel-3d-scene {
    height: clamp(340px, 52vw, 460px);
    perspective: 1400px;
    perspective-origin: 50% 42%;
    position: relative;
    margin-bottom: 2rem;
    transform-style: preserve-3d;
}

.carousel-3d-floor {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) rotateX(82deg);
    width: 70%;
    height: 120px;
    background: radial-gradient(ellipse at center, rgba(8, 116, 167, 0.22) 0%, transparent 70%);
    pointer-events: none;
    filter: blur(2px);
}

.carousel-3d-ring {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    will-change: transform;
}

.carousel-3d-slide {
    position: absolute;
    width: min(680px, 88%);
    left: 50%;
    top: 50%;
    margin-left: calc(min(680px, 88%) / -2);
    margin-top: -150px;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    opacity: 0.35;
    filter: blur(2px) brightness(0.65);
    transition: opacity 0.6s ease, filter 0.6s ease;
    pointer-events: none;
}

.carousel-3d-slide.is-active {
    opacity: 1;
    filter: none;
    pointer-events: auto;
    z-index: 2;
}

.carousel-3d-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.carousel-3d-card-glow {
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, rgba(193, 190, 40, 0.4), rgba(8, 116, 167, 0.4));
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
}

.carousel-3d-slide.is-active .carousel-3d-card-glow {
    opacity: 1;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; }
    50%       { opacity: 1; }
}

.carousel-3d-card-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 2rem;
    align-items: center;
    background: rgba(4, 15, 19, 0.88);
    border: 1px solid var(--line-color);
    border-radius: var(--border-radius-lg);
    padding: clamp(24px, 4vw, 48px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(12px);
    min-height: 280px;
}

.carousel-3d-left {
    text-align: center;
}

.carousel-index {
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.carousel-index-num {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    color: var(--color-gold);
    text-shadow: 0 0 40px rgba(193, 190, 40, 0.35);
}

.carousel-3d-slide.is-active .carousel-index-num {
    animation: indexPop 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes indexPop {
    0%   { transform: scale(0.6) translateY(30px); opacity: 0; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

.carousel-3d-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 1rem;
}

.carousel-meta-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 10px;
    border: 1px solid var(--line-color);
    border-radius: var(--border-radius-sm);
    color: rgba(237, 243, 241, 0.72);
}

.carousel-meta-tag--gold {
    border-color: rgba(193, 190, 40, 0.45);
    color: var(--color-gold);
}

.carousel-3d-title {
    color: var(--color-white);
    font-size: clamp(1.4rem, 3vw, 2rem);
    margin-bottom: 1rem;
    line-height: 1.15;
}

.carousel-3d-slide.is-active .carousel-3d-title {
    animation: titleSlide 0.65s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
}

@keyframes titleSlide {
    from { transform: translateX(30px); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}

.carousel-3d-desc {
    color: rgba(237, 243, 241, 0.72);
    font-size: 0.95rem;
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.carousel-3d-slide.is-active .carousel-3d-desc {
    animation: titleSlide 0.65s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.carousel-3d-slide.is-active .btn {
    animation: titleSlide 0.65s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.carousel-controls {
    align-items: center;
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 0.5rem;
}

.carousel-dots {
    display: flex;
    gap: 10px;
    align-items: center;
}

.carousel-arrow,
.carousel-dot {
    background: rgba(4, 15, 19, 0.6);
    border: 1px solid var(--line-color);
    color: var(--color-white);
    cursor: pointer;
    padding: 12px 18px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    backdrop-filter: blur(8px);
}

.carousel-arrow:hover:not(:disabled),
.carousel-dot:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.carousel-arrow:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.carousel-dot {
    border-radius: 50%;
    height: 10px;
    padding: 0;
    width: 10px;
    background: transparent;
}

.carousel-dot.active {
    background: var(--color-gold);
    border-color: var(--color-gold);
    box-shadow: 0 0 12px rgba(193, 190, 40, 0.5);
    transform: scale(1.3);
}

.carousel-progress {
    height: 2px;
    background: rgba(237, 243, 241, 0.12);
    border-radius: 2px;
    margin-top: 1.5rem;
    overflow: hidden;
}

.carousel-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    border-radius: 2px;
    transition: width 0.1s linear;
}

.services-preview {
    background: var(--color-gray-light);
    color: var(--color-text-primary);
    padding: 100px clamp(22px, 5vw, 80px);
    position: relative;
}

.service-preview-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(3, 1fr);
    max-width: 1280px;
    margin: 0 auto;
    perspective: 1200px;
}

.service-preview-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    transform-style: preserve-3d;
    will-change: transform;
    transition: box-shadow 0.35s ease;
    cursor: default;
}

.service-preview-card.is-hover {
    box-shadow: 0 20px 50px rgba(8, 116, 167, 0.18);
    z-index: 2;
}

.service-preview-card-inner {
    position: relative;
    background: white;
    border: 1px solid #e5e5e5;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transform-style: preserve-3d;
    transition: border-color 0.3s ease;
    min-height: 100%;
}

.service-preview-card.is-hover .service-preview-card-inner {
    border-color: rgba(8, 116, 167, 0.45);
}

.service-preview-shine {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at var(--shine-x, 50%) var(--shine-y, 50%),
        rgba(8, 116, 167, 0.14) 0%,
        transparent 55%
    );
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.service-preview-card.is-hover .service-preview-shine {
    opacity: 1;
}

.service-preview-num {
    position: relative;
    z-index: 1;
    color: var(--color-accent);
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1;
    transform: translateZ(24px);
    text-shadow: 0 4px 12px rgba(8, 116, 167, 0.15);
}

.service-preview-card-inner h3 {
    position: relative;
    z-index: 1;
    font-size: 1.25rem;
    margin: var(--spacing-md) 0 var(--spacing-sm);
    transform: translateZ(16px);
    color: var(--color-text-primary);
}

.service-preview-card-inner p {
    position: relative;
    z-index: 1;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 0;
    transform: translateZ(8px);
}

.service-preview-tag {
    position: relative;
    z-index: 1;
    display: inline-block;
    margin-top: var(--spacing-md);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-gold);
    border: 1px solid rgba(193, 190, 40, 0.35);
    padding: 5px 10px;
    border-radius: var(--border-radius-sm);
    transform: translateZ(12px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-preview-card.is-hover .service-preview-tag,
.service-preview-card.is-visible .service-preview-tag {
    opacity: 1;
}

@media (hover: none) {
    .service-preview-card {
        transform: none !important;
    }
    .service-preview-card:active .service-preview-card-inner {
        border-color: var(--color-accent);
    }
}

@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .stat-item {
        border-left: none;
        border-top: 1px solid rgba(7, 18, 23, 0.08);
    }
    .stat-item:first-child { border-top: none; }
}

@media (max-width: 768px) {
    .hero-3d { padding: 140px clamp(22px, 5vw, 80px) 80px; }
    .viewer-shell, .viewer-frame, .viewer-stage, #model-canvas { height: 380px; min-height: 380px; }
    .viewer-media--embed { min-height: 380px; }
    .service-preview-grid { grid-template-columns: 1fr; }
    .carousel-3d-card-inner { grid-template-columns: 1fr; gap: 1.25rem; text-align: center; }
    .carousel-3d-slide { margin-top: -120px; }
    .carousel-3d-scene { perspective: 900px; }
}

@media (max-width: 480px) {
    h1 { font-size: 2.5rem; }
    .carousel-index-num { font-size: 3rem; }
    .carousel-arrow { padding: 10px 14px; }
}

@media (prefers-reduced-motion: reduce) {
    .marquee-track,
    .hero-3d::before,
    .hero-orb,
    .hero-3d::after,
    .carousel-3d-slide.is-active .carousel-index-num,
    .carousel-3d-slide.is-active .carousel-3d-title,
    .carousel-3d-slide.is-active .carousel-3d-desc,
    .carousel-3d-slide.is-active .btn,
    .carousel-3d-slide.is-active .carousel-3d-card-glow {
        animation: none;
    }
    .hero-title .char,
    .hero-word {
        opacity: 1;
        transform: none;
    }
    .stat-item.is-visible .stat-icon,
    .stat-item.is-visible .stat-number {
        animation: none;
    }
    .stat-bar-fill {
        width: 100% !important;
    }
    .service-preview-card {
        transform: none !important;
    }
    .service-preview-shine {
        display: none;
    }
}