@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@400;500;700;900&display=swap');

/* --- Modern Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg-primary: #08080a;
    --bg-secondary: #0f1015;
    --bg-tertiary: #171923;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #00f0ff;
    --accent-cyan-rgb: 0, 240, 255;
    --accent-gold: #ffb700;
    --accent-gold-rgb: 255, 183, 0;
    --accent-orange: #ff5722;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(0, 240, 255, 0.3);
    
    --glow-cyan: 0 0 15px rgba(0, 240, 255, 0.35);
    --glow-gold: 0 0 15px rgba(255, 183, 0, 0.35);
    
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-speed: 0.4s;
    --transition-bezier: cubic-bezier(0.25, 0.8, 0.25, 1);

    --bg-header-alpha: rgba(8, 8, 10, 0.7);
    --bg-header-solid: rgba(8, 8, 10, 0.95);
    --bg-footer: #040507;
    --border-footer: rgba(255, 255, 255, 0.05);
    --bg-btn-secondary: rgba(255, 255, 255, 0.02);
}

html[data-theme="light"] {
    --bg-primary: #f0f2f5;
    --bg-secondary: #e6e9ee;
    --bg-tertiary: #d9dee7;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    
    --accent-cyan: #00d2ff;
    --accent-cyan-rgb: 0, 210, 255;
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(0, 210, 255, 0.35);
    
    --glow-cyan: 0 0 12px rgba(0, 210, 255, 0.2);
    --glow-gold: 0 0 12px rgba(255, 183, 0, 0.2);

    --bg-header-alpha: rgba(240, 242, 245, 0.75);
    --bg-header-solid: rgba(240, 242, 245, 0.95);
    --bg-footer: #e6e9ee;
    --border-footer: rgba(15, 23, 42, 0.06);
    --bg-btn-secondary: rgba(15, 23, 42, 0.02);
}

/* --- Theme Toggle Switch Button --- */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s var(--transition-bezier);
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-right: 1.5rem;
}

.theme-toggle:hover {
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
    transform: scale(1.05);
}

/* --- Smooth transitions for theme switching --- */
body, header, section, footer, .problem-card, .service-card, input, select, textarea, .faq-item, .elevator-panel, .tab-btn, .navbar, .header, .logo-img {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease, filter 0.4s ease, height 0.3s ease, transform 0.3s var(--transition-bezier);
}

/* --- Light Theme Adjustments --- */
html[data-theme="light"] .logo-img {
    filter: invert(0.85) hue-rotate(180deg) drop-shadow(0 0 6px rgba(0, 120, 240, 0.25));
}

html[data-theme="light"] .shaft-glow {
    border-left-color: rgba(0, 210, 255, 0.25);
    border-right-color: rgba(0, 210, 255, 0.25);
    background: linear-gradient(90deg, transparent, rgba(0, 210, 255, 0.05) 50%, transparent);
}

html[data-theme="light"] .text-gradient-cyan {
    background: linear-gradient(135deg, #0f172a 30%, #0084a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

html[data-theme="light"] .text-gradient-gold {
    background: linear-gradient(135deg, #0f172a 30%, #c48a00 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}


html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.6;
}

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

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    background: none;
    border: none;
    color: inherit;
}

/* --- Helper Classes --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.text-gradient-cyan {
    background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-gold {
    background: linear-gradient(135deg, #ffffff 30%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Layout Header & Navbar --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--bg-header-alpha);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: var(--bg-header-solid);
    border-bottom-color: rgba(0, 240, 255, 0.15);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: height 0.3s ease;
}

.header.scrolled .navbar {
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 64px;
    width: auto;
    display: block;
    object-fit: contain;
    transition: all 0.3s var(--transition-bezier);
    filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.45));
}

.logo-img:hover {
    filter: drop-shadow(0 0 12px rgba(0, 240, 255, 0.75)) brightness(1.1);
    transform: scale(1.05);
}

.header.scrolled .logo-img {
    height: 54px;
}

.footer .logo-img {
    height: 72px;
    filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.4));
}

.footer .logo-img:hover {
    filter: drop-shadow(0 0 14px rgba(0, 240, 255, 0.75)) brightness(1.1);
}

.logo-icon {
    position: relative;
    width: 32px;
    height: 32px;
    border: 2px solid var(--accent-cyan);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow-cyan);
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 8px solid var(--accent-cyan);
    transform: translateY(-4px);
    animation: bounceUp 2s infinite ease-in-out;
}

.logo-icon::after {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid var(--accent-cyan);
    transform: translateY(4px);
    animation: bounceDown 2s infinite ease-in-out;
}

@keyframes bounceUp {
    0%, 100% { transform: translateY(-5px); }
    50% { transform: translateY(-1px); }
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(5px); }
    50% { transform: translateY(1px); }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
    transition: width var(--transition-speed) var(--transition-bezier);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

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

.nav-cta {
    position: relative;
    padding: 0.6rem 1.5rem;
    border: 1px solid var(--accent-cyan);
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.03);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.05);
    overflow: hidden;
    z-index: 1;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.15), transparent);
    transition: left 0.6s ease;
    z-index: -1;
}

.nav-cta:hover::before {
    left: 100%;
}

.nav-cta:hover {
    background: rgba(0, 240, 255, 0.1);
    box-shadow: var(--glow-cyan);
    color: #fff;
    border-color: #fff;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 101;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all 0.3s ease;
}

/* --- General Content Sections --- */
section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    display: block;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

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

/* --- Floating Elevator Buttons Panel --- */
.elevator-panel {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(180deg, #232733 0%, #161821 100%);
    border: 2px solid #3c4257;
    border-radius: 30px;
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), inset 0 2px 5px rgba(255, 255, 255, 0.1);
    z-index: 90;
    width: 64px;
}

.elevator-panel-display {
    background: #000;
    border: 1px solid #3c4257;
    width: 40px;
    height: 48px;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}

.elevator-floor-num {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--accent-orange);
    text-shadow: 0 0 6px rgba(255, 87, 34, 0.7);
    line-height: 1;
}

.elevator-arrow {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    opacity: 0.3;
    transition: all 0.3s ease;
}

.elevator-arrow.up {
    border-bottom: 6px solid var(--accent-orange);
    margin-bottom: 2px;
    margin-top: 2px;
}

.elevator-arrow.down {
    border-top: 6px solid var(--accent-orange);
    margin-top: 2px;
}

.elevator-arrow.active {
    opacity: 1;
    filter: drop-shadow(0 0 3px var(--accent-orange));
    animation: arrowPulse 0.8s infinite alternate;
}

@keyframes arrowPulse {
    from { opacity: 0.5; }
    to { opacity: 1; }
}

.elevator-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, #464e66 0%, #202430 80%);
    border: 2px solid #5a6480;
    color: #94a3b8;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.elevator-btn:hover {
    color: #ffffff;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
}

.elevator-btn.active {
    border-color: var(--accent-cyan);
    background: radial-gradient(circle at 35% 35%, #2a354d 0%, #0c1824 80%);
    color: var(--accent-cyan);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.6), inset 0 2px 4px rgba(0, 240, 255, 0.4);
    text-shadow: 0 0 5px rgba(0, 240, 255, 0.6);
}

/* --- Full Screen Elevator Doors Transition Overlay --- */
.elevator-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 2000;
    pointer-events: none;
    display: flex;
}

.elevator-door {
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, #1e222b 0%, #363d4e 40%, #1e222b 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: absolute;
    top: 0;
    transition: transform 0.6s cubic-bezier(0.85, 0, 0.15, 1);
    box-shadow: inset -5px 0 15px rgba(0, 0, 0, 0.4), inset 5px 0 15px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
}

.elevator-door-left {
    left: 0;
    transform: translateX(-100%);
    justify-content: flex-end;
    border-right: 4px solid #4a546d;
}

.elevator-door-right {
    right: 0;
    transform: translateX(100%);
    justify-content: flex-start;
    border-left: 4px solid #4a546d;
}

.elevator-transition.closing .elevator-door-left {
    transform: translateX(0);
    pointer-events: all;
}
.elevator-transition.closing .elevator-door-right {
    transform: translateX(0);
    pointer-events: all;
}

.elevator-transition.opening .elevator-door-left {
    transform: translateX(-100%);
}
.elevator-transition.opening .elevator-door-right {
    transform: translateX(100%);
}

.elevator-door-logo {
    height: 80px;
    width: 44px;
    background: rgba(8, 8, 10, 0.95);
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.door-logo-left {
    right: -4px;
    border: 3px solid var(--accent-cyan);
    border-right: none;
    border-radius: 8px 0 0 8px;
    box-shadow: -5px 0 15px rgba(0, 240, 255, 0.4), inset -2px 0 5px rgba(0, 240, 255, 0.15);
    padding-right: 4px;
}

.door-logo-right {
    left: -4px;
    border: 3px solid var(--accent-cyan);
    border-left: none;
    border-radius: 0 8px 8px 0;
    box-shadow: 5px 0 15px rgba(0, 240, 255, 0.4), inset 2px 0 5px rgba(0, 240, 255, 0.15);
    padding-left: 4px;
}

.elevator-door-logo span {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--accent-cyan);
    text-shadow: var(--glow-cyan);
}

/* --- Hero Section & Three.js Shaft Container --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 120px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    z-index: 10;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.hero-tagline::before {
    content: '';
    width: 12px;
    height: 12px;
    border: 2px solid var(--accent-cyan);
    border-radius: 2px;
    box-shadow: var(--glow-cyan);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.cta-group {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.btn-primary {
    position: relative;
    padding: 1rem 2.2rem;
    background: var(--accent-cyan);
    color: #000;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    box-shadow: var(--glow-cyan);
    transition: all 0.3s ease;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
    background: #fff;
    color: #000;
}

.btn-secondary {
    padding: 1rem 2.2rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    background: var(--bg-btn-secondary);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.05);
    color: var(--accent-cyan);
    transform: translateY(-2px);
}

.hero-visual {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.canvas-container {
    position: absolute;
    width: 100%;
    height: 120%;
    top: -10%;
    left: 0;
    z-index: 1;
}

.shaft-glow {
    position: absolute;
    width: 120px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.03) 50%, transparent);
    border-left: 1px dashed rgba(0, 240, 255, 0.1);
    border-right: 1px dashed rgba(0, 240, 255, 0.1);
    pointer-events: none;
    z-index: 0;
}

/* --- Social Proof --- */
.social-proof {
    background: var(--bg-secondary);
    padding: 50px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.logo-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    opacity: 0.6;
}

.proof-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: opacity 0.3s ease;
}

.proof-logo:hover {
    opacity: 1;
    color: var(--accent-cyan);
    text-shadow: var(--glow-cyan);
}

/* --- Problem / Focus Section --- */
.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem;
    transition: all var(--transition-speed) var(--transition-bezier);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background-color: var(--accent-orange);
    opacity: 0.6;
}

.problem-card:hover {
    border-color: rgba(255, 87, 34, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 87, 34, 0.05);
}

.problem-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.problem-card p {
    color: var(--text-secondary);
}

/* --- Grid & Tilt Cards (Services) --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem;
    transition: all var(--transition-speed) var(--transition-bezier);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 8px;
    border: 1px solid var(--accent-cyan);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.service-card:hover {
    border-color: transparent;
    box-shadow: 0 15px 35px rgba(0, 240, 255, 0.08);
}

.service-card:hover::after {
    opacity: 0.3;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    box-shadow: var(--glow-cyan);
    transform: translateZ(30px);
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 1rem;
    transform: translateZ(20px);
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transform: translateZ(10px);
    margin-bottom: 1.5rem;
}

.card-link {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-link svg {
    transition: transform 0.3s ease;
}

.service-card:hover .card-link svg {
    transform: translateX(5px);
}

/* --- Interactive 3D Cabin Configurator --- */
.configurator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.cabin-preview-panel {
    background: linear-gradient(135deg, #10121a 0%, #0a0a0c 100%);
    border: 2px solid #232736;
    border-radius: 12px;
    height: 450px;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 30px rgba(0,0,0,0.8), 0 20px 40px rgba(0,0,0,0.4);
}

/* Simulated 3D cabin box */
.cabin-3d-scene {
    width: 260px;
    height: 320px;
    perspective: 800px;
    position: relative;
}

.cabin-box {
    width: 100%;
    height: 100%;
    position: absolute;
    transform-style: preserve-3d;
    transform: rotateX(-10deg) rotateY(-20deg);
    transition: transform 0.8s ease;
}

.cabin-wall {
    position: absolute;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.6);
    border: 1px solid rgba(255,255,255,0.05);
    transition: background 0.5s ease, border-color 0.5s ease;
}

.cabin-wall.back {
    width: 100%;
    height: 100%;
    background: #2c303d; /* Brushed Steel */
    transform: translateZ(-120px);
}

.cabin-wall.left {
    width: 240px;
    height: 100%;
    background: #252833;
    left: -120px;
    transform: rotateY(90deg);
}

.cabin-wall.right {
    width: 240px;
    height: 100%;
    background: #252833;
    right: -120px;
    transform: rotateY(-90deg);
}

.cabin-wall.floor {
    width: 100%;
    height: 240px;
    background: #1e2029;
    bottom: -120px;
    transform: rotateX(90deg);
}

.cabin-wall.ceiling {
    width: 100%;
    height: 240px;
    background: #2e3240;
    top: -120px;
    transform: rotateX(-90deg);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Cabin textures and options styles */
.cabin-wall[data-style="brushed"] {
    background: linear-gradient(90deg, #323847, #484e5f, #323847);
}
.cabin-wall[data-style="wood"] {
    background: linear-gradient(90deg, #422a1d, #633f2c, #422a1d);
}
.cabin-wall[data-style="obsidian"] {
    background: linear-gradient(90deg, #101115, #222530, #101115);
}

/* Cabin lights styles */
.cabin-ceiling-light {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 30px 10px #fff;
    transition: all 0.5s ease;
}

.cabin-ceiling-light[data-light="warm"] {
    background: #ffe3b3;
    box-shadow: 0 0 30px 10px #ffe3b3, 0 0 15px rgba(255, 183, 0, 0.4);
}

.cabin-ceiling-light[data-light="cyan"] {
    background: #e0faff;
    box-shadow: 0 0 30px 10px #e0faff, 0 0 15px rgba(0, 240, 255, 0.8);
}

.cabin-ceiling-light[data-light="neon"] {
    background: #ffbdfb;
    box-shadow: 0 0 30px 10px #ffbdfb, 0 0 15px rgba(255, 0, 128, 0.8);
}

.configurator-controls {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.config-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.config-group-title {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-cyan);
}

.config-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.config-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--bg-secondary);
    transition: all 0.3s ease;
}

.config-btn:hover {
    border-color: rgba(0, 240, 255, 0.3);
}

.config-btn.active {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.05);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
}

/* --- Testimonials --- */
.testimonial-carousel {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    padding-bottom: 2rem;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.testimonial-card {
    flex: 0 0 450px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 8px;
    scroll-snap-align: start;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    position: relative;
}

.testimonial-text::before {
    content: '“';
    font-size: 4rem;
    font-family: var(--font-heading);
    color: var(--accent-cyan);
    position: absolute;
    top: -2.5rem;
    left: -1rem;
    opacity: 0.2;
}

.testimonial-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #232736;
    border: 2px solid var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--accent-cyan);
}

.testimonial-info h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- Contact & WhatsApp Form --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.contact-info-text h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-info-text p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
}

.form-select option {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--accent-orange);
    font-size: 0.8rem;
    font-weight: 500;
    margin-top: 0.25rem;
    display: none;
}

.btn-whatsapp {
    width: 100%;
    padding: 1.1rem;
    background: #25d366;
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
}

.btn-whatsapp:hover {
    background: #128c7e;
    box-shadow: 0 8px 20px rgba(18, 140, 126, 0.4);
    transform: translateY(-2px);
}

/* --- About & Team Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(20%);
    transition: filter 0.5s ease;
}

.about-image:hover img {
    filter: grayscale(0%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- Services Tabs --- */
.tabs-container {
    margin-top: 30px;
}

.tab-nav {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1px;
    margin-bottom: 3rem;
    overflow-x: auto;
}

.tab-btn {
    padding: 1rem 2rem;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--accent-cyan);
    border-bottom-color: var(--accent-cyan);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
}

.tab-content {
    display: none;
    animation: tabFadeIn 0.5s ease;
}

.tab-content.active {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

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

.tab-text h3 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.tab-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.feature-item svg {
    color: var(--accent-cyan);
    flex-shrink: 0;
}

/* --- Legal / Documents Layout --- */
.legal-wrapper {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: 3rem;
}

.legal-section:last-child {
    margin-bottom: 0;
}

.legal-section h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.legal-section p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.legal-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.legal-section li {
    margin-bottom: 0.5rem;
}

/* --- FAQ Accordion --- */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    transition: background 0.3s ease;
}

.faq-header:hover {
    background: rgba(255,255,255,0.01);
}

.faq-question {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
}

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
    color: var(--accent-cyan);
}

.faq-item.active {
    border-color: rgba(0, 240, 255, 0.2);
}

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

.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.85, 0, 0.15, 1);
}

.faq-content {
    padding: 0 2rem 1.5rem 2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Footer --- */
.footer {
    background: var(--bg-footer);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 60px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.social-link:hover {
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
    box-shadow: var(--glow-cyan);
}

.footer-column h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-link:hover {
    color: var(--accent-cyan);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border-footer);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- Responsive CSS --- */
@media (max-width: 992px) {
    .hero-grid, .configurator-wrapper, .contact-grid, .about-grid, .tab-content.active {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-visual {
        height: 350px;
        order: -1;
    }
    
    .footer-grid {
        grid-template-columns: 1.5fr 1fr;
    }
    
    .elevator-panel {
        right: 15px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--bg-primary);
        flex-direction: column;
        justify-content: center;
        gap: 2.5rem;
        transition: left 0.4s ease;
        z-index: 99;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .elevator-panel {
        display: none; /* Hide interactive panel on mobile to save space */
    }
}