/* ==========================================================================
   FPV ONE - Modern Aerospace & FPV Engineering Design System
   https://fpv-one.lt
   ========================================================================== */

/* 1. CSS Custom Properties / Design Tokens */
:root {
    --bg-primary: #0a0c10;
    --bg-secondary: #0f131a;
    --bg-card: rgba(18, 22, 32, 0.75);
    --bg-card-hover: rgba(24, 30, 44, 0.9);
    --bg-input: #141824;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(245, 158, 11, 0.4);
    --border-cyan: rgba(0, 229, 255, 0.3);

    --accent-gold: #f59e0b;
    --accent-gold-light: #fbbf24;
    --accent-gold-glow: rgba(245, 158, 11, 0.35);
    
    --accent-cyan: #00e5ff;
    --accent-cyan-light: #38bdf8;
    --accent-cyan-glow: rgba(0, 229, 255, 0.35);

    --accent-green: #10b981;
    --accent-red: #ef4444;

    --text-white: #ffffff;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
    --shadow-gold: 0 8px 30px rgba(245, 158, 11, 0.2);

    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. Global Resets & Base Typography */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 15% 10%, rgba(245, 158, 11, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 85% 60%, rgba(0, 229, 255, 0.04) 0%, transparent 50%),
        linear-gradient(180deg, #0a0c10 0%, #0c0f16 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-white);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.2rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
p:last-child { margin-bottom: 0; }

a {
    color: var(--accent-gold);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    color: var(--accent-gold-light);
}

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

/* 3. Flight Telemetry Top Bar */
.telemetry-bar {
    background: #06080b;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.78rem;
    font-family: var(--font-mono);
    padding: 0.5rem 0;
    color: var(--text-muted);
}
.telemetry-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.telemetry-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 10px var(--accent-green);
    animation: livePulse 2s infinite ease-in-out;
}
@keyframes livePulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}
.telemetry-text {
    letter-spacing: 0.05em;
    color: #e2e8f0;
}
.telemetry-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.telemetry-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary);
}
.telemetry-link:hover {
    color: var(--accent-gold);
}
.telemetry-badge {
    background: rgba(255, 255, 255, 0.06);
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
    color: var(--accent-gold);
    font-size: 0.7rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

/* 4. Main Navigation Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(8, 10, 14, 0.95);
    box-shadow: var(--shadow-md);
    border-bottom-color: rgba(245, 158, 11, 0.2);
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 84px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.logo-img {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0,0,0,0.5));
}
.brand-badge {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.5rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius-sm);
}
.brand-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-gold);
}
.brand-badge-text {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
}

/* Desktop Nav */
.desktop-nav {
    display: flex;
    align-items: center;
}
.nav-list {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
}
.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: #cbd5e1;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem 0.25rem;
    position: relative;
    letter-spacing: 0.02em;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--accent-gold);
    box-shadow: 0 0 8px var(--accent-gold);
    transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
    color: var(--text-white);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

/* Nav Dropdown */
.has-dropdown {
    position: relative;
}
.dropdown-chevron {
    transition: transform 0.2s ease;
}
.has-dropdown:hover .dropdown-chevron {
    transform: rotate(180deg);
}
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: 320px;
    background: #0f131a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.2s ease;
    backdrop-filter: blur(20px);
}
.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: var(--transition);
}
.dropdown-item:hover, .dropdown-item.active {
    background: rgba(245, 158, 11, 0.08);
    border-left: 2px solid var(--accent-gold);
}
.dropdown-icon-box {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background: #161c28;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    border: 1px solid rgba(255, 255, 255, 0.05);
    flex-shrink: 0;
}
.dropdown-item:hover .dropdown-icon-box {
    background: var(--accent-gold);
    color: #000;
}
.dropdown-title {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-white);
}
.dropdown-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Header Action */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}
.mobile-menu-toggle .bar {
    height: 2.5px;
    width: 100%;
    background-color: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
}
.mobile-menu-toggle.open .bar-1 {
    transform: translateY(10px) rotate(45deg);
}
.mobile-menu-toggle.open .bar-2 {
    opacity: 0;
}
.mobile-menu-toggle.open .bar-3 {
    transform: translateY(-10px) rotate(-45deg);
}

/* 5. Mobile Drawer */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 1998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}
.mobile-menu-drawer {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(85vw, 360px);
    background: #0f131a;
    border-left: 1px solid var(--border-color);
    z-index: 1999;
    padding: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}
.mobile-menu-drawer.active {
    transform: translateX(0);
}
.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}
.drawer-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}
.mobile-nav-list {
    list-style: none;
    padding: 1.5rem 0;
}
.mobile-nav-heading {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 1rem 0 0.5rem;
}
.mobile-nav-link {
    display: block;
    padding: 0.65rem 0;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: #e2e8f0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.mobile-nav-link.active {
    color: var(--accent-gold);
}
.drawer-contact-box {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 6. Buttons & Interactions */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 0.75rem 1.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #d97706 100%);
    color: #0b0e14;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--accent-gold) 100%);
    color: #000000;
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
    transform: translateY(-2px);
}
.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-white);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--accent-gold);
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}
.btn-cyan {
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid var(--border-cyan);
}
.btn-cyan:hover {
    background: var(--accent-cyan);
    color: #0a0c10;
    box-shadow: 0 0 20px var(--accent-cyan-glow);
}
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.82rem;
}
.btn-lg {
    padding: 1rem 2.2rem;
    font-size: 1.05rem;
}
.btn-block {
    width: 100%;
}

/* 7. Hero Section */
.hero-section {
    position: relative;
    padding: clamp(3.5rem, 8vw, 7rem) 0;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}
.hero-bg-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 60% 40%, rgba(245, 158, 11, 0.12) 0%, transparent 60%),
                radial-gradient(circle at 20% 80%, rgba(0, 229, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}
.hero-grid-lines {
    position: absolute;
    inset: 0;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    pointer-events: none;
    z-index: 1;
}
.hero-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: center;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-full);
    padding: 0.35rem 1rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--accent-gold);
    letter-spacing: 0.05em;
}
.hero-title {
    margin-bottom: 1.25rem;
}
.text-gradient {
    background: linear-gradient(135deg, #ffffff 40%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.text-gradient-cyan {
    background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-lead {
    font-size: 1.15rem;
    line-height: 1.7;
    color: #cbd5e1;
    margin-bottom: 2rem;
    max-width: 580px;
}
.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}
.stat-number {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-gold);
}
.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Hero Media & HUD Preview */
.hero-media-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    background: #0f131a;
}
.hero-media-img {
    width: 100%;
    height: 480px;
    object-fit: cover;
    filter: brightness(0.9) contrast(1.05);
    transition: transform 0.5s ease;
}
.hero-media-card:hover .hero-media-img {
    transform: scale(1.03);
}
/* HUD flight overlay simulated on hero image */
.hud-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.85);
    background: linear-gradient(180deg, rgba(0,0,0,0.5) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.7) 100%);
}
.hud-top, .hud-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.hud-badge {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.hud-badge.green {
    border-color: var(--accent-green);
    color: var(--accent-green);
}
.hud-crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 1px dashed rgba(245, 158, 11, 0.4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hud-crosshair::before {
    content: '';
    width: 10px;
    height: 1px;
    background: var(--accent-gold);
}

/* 8. Services Section */
.section {
    padding: clamp(4rem, 8vw, 6.5rem) 0;
    position: relative;
}
.section-dark {
    background: #0d1017;
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3.5rem;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.section-title {
    margin-bottom: 1rem;
}
.section-lead {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 1.75rem;
}
.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(12px);
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    opacity: 0;
    transition: var(--transition);
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-gold);
}
.service-card:hover::before {
    opacity: 1;
}
.service-icon-wrap {
    width: 58px;
    height: 58px;
    border-radius: var(--radius-md);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}
.service-card:hover .service-icon-wrap {
    background: var(--accent-gold);
    color: #0b0e14;
    box-shadow: 0 0 20px var(--accent-gold-glow);
}
.service-card-title {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    color: var(--text-white);
}
.service-card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.75rem;
    flex-grow: 1;
}
.service-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.88rem;
    text-transform: uppercase;
    color: var(--accent-gold);
    letter-spacing: 0.04em;
}
.service-card-link svg {
    transition: transform 0.2s ease;
}
.service-card-link:hover svg {
    transform: translateX(4px);
}

/* 9. Interactive Configurator Tool */
.configurator-box {
    background: #11151f;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: clamp(1.5rem, 4vw, 3rem);
    box-shadow: var(--shadow-lg);
}
.configurator-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
    align-items: start;
}
.config-group {
    margin-bottom: 1.75rem;
}
.config-label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-white);
    margin-bottom: 0.75rem;
}
.config-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
}
.config-chip {
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    text-align: center;
    transition: var(--transition);
    user-select: none;
}
.config-chip:hover {
    border-color: rgba(245, 158, 11, 0.4);
    background: rgba(245, 158, 11, 0.05);
}
.config-chip.active {
    border-color: var(--accent-gold);
    background: rgba(245, 158, 11, 0.15);
    color: var(--text-white);
    box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}
.config-chip-title {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--text-white);
}
.config-chip-subtitle {
    font-size: 0.72rem;
    color: var(--text-muted);
}
.config-summary-card {
    background: #090c12;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    position: sticky;
    top: 110px;
}
.summary-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.25rem;
}
.summary-spec-list {
    list-style: none;
    margin-bottom: 1.5rem;
}
.summary-spec-item {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.9rem;
}
.summary-spec-label {
    color: var(--text-secondary);
}
.summary-spec-val {
    font-family: var(--font-mono);
    color: var(--accent-gold);
    font-weight: 700;
}

/* 10. Why Choose Us / Advantage Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}
.advantage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    transition: var(--transition);
}
.advantage-card:hover {
    border-color: var(--border-cyan);
    transform: translateY(-4px);
}
.advantage-icon {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}
.advantage-title {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    color: var(--text-white);
}
.advantage-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 11. Contact Form Component */
.contact-card-wrapper {
    background: #0f131a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: clamp(1.75rem, 5vw, 3.5rem);
    box-shadow: var(--shadow-lg);
    max-width: 860px;
    margin: 0 auto;
}
.contact-card-header {
    text-align: center;
    margin-bottom: 2.5rem;
}
.contact-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-full);
    padding: 0.25rem 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-gold);
    margin-bottom: 0.75rem;
}
.badge-hud {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-gold);
}
.contact-heading {
    margin-bottom: 0.75rem;
}
.contact-subheading {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group.full-width {
    grid-column: 1 / -1;
}
.form-label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-primary);
    margin-bottom: 0.45rem;
}
.form-label .required {
    color: var(--accent-gold);
}
.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}
.field-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
}
.form-control {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.8rem 1rem 0.8rem 2.8rem;
    color: var(--text-white);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}
select.form-control {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}
.form-control.textarea {
    padding-left: 1rem;
    resize: vertical;
    min-height: 120px;
}
.form-control:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
    background: #171c2a;
}
.input-with-icon:focus-within .field-icon {
    color: var(--accent-gold);
}
.field-error-msg {
    font-size: 0.78rem;
    color: var(--accent-red);
    margin-top: 0.35rem;
    min-height: 1.1rem;
}
.form-footer-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    text-align: center;
}
.form-submit-container {
    text-align: center;
}
.submit-btn {
    min-width: 240px;
}
.btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 0, 0, 0.3);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.form-response-alert {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    text-align: center;
}
.form-response-alert.success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid var(--accent-green);
    color: #6ee7b7;
}
.form-response-alert.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--accent-red);
    color: #fca5a5;
}

/* 12. FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.open {
    border-color: rgba(245, 158, 11, 0.35);
}
.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-white);
}
.faq-icon {
    transition: transform 0.25s ease;
    color: var(--accent-gold);
}
.faq-item.open .faq-icon {
    transform: rotate(180deg);
}
.faq-answer {
    padding: 0 1.5rem 1.25rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    display: none;
}
.faq-item.open .faq-answer {
    display: block;
}

/* 13. Page Header / Breadcrumbs for Interior Pages */
.page-titlebar {
    position: relative;
    padding: clamp(3rem, 6vw, 5rem) 0 3rem;
    background-color: #0b0e14;
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}
.page-titlebar-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    filter: blur(2px);
    pointer-events: none;
}
.page-titlebar-inner {
    position: relative;
    z-index: 2;
}
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-family: var(--font-mono);
}
.breadcrumb-separator {
    color: var(--text-muted);
}
.breadcrumb-current {
    color: var(--accent-gold);
}
.page-hero-title {
    margin-bottom: 0.75rem;
}
.page-hero-subtitle {
    font-size: 1.15rem;
    color: var(--accent-gold);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* 14. Detail Page Content Grid */
.detail-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3.5rem;
    align-items: start;
}
.detail-content {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}
.detail-content p {
    margin-bottom: 1.5rem;
}
.detail-content h2, .detail-content h3 {
    margin: 2rem 0 1rem;
}
.feature-checklist {
    list-style: none;
    margin: 1.5rem 0;
}
.feature-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.85rem;
    color: var(--text-primary);
}
.checklist-icon {
    color: var(--accent-green);
    flex-shrink: 0;
    margin-top: 3px;
}
.detail-sidebar-card {
    background: #0f131a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 110px;
}
.sidebar-media-box {
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

/* 15. Footer */
.site-footer {
    background: #06080b;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    position: relative;
}
.footer-top-accent {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
}
.footer-content {
    padding: 4.5rem 1.5rem 3.5rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
    gap: 3rem;
}
.footer-logo {
    height: 48px;
    width: auto;
    margin-bottom: 1.25rem;
}
.footer-desc {
    font-size: 0.92rem;
    color: #94a3b8;
    line-height: 1.65;
    margin-bottom: 1rem;
}
.footer-subdesc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.social-icon-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #e2e8f0;
    font-size: 0.85rem;
    font-weight: 500;
}
.social-icon-btn:hover {
    background: #1877f2;
    color: #ffffff;
    border-color: #1877f2;
}
.footer-title {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-white);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 0.75rem;
}
.footer-links a {
    color: var(--text-secondary);
    font-size: 0.92rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.footer-link-bullet {
    color: var(--accent-gold);
    font-weight: bold;
}
.footer-links a:hover {
    color: var(--accent-gold);
    transform: translateX(4px);
}
.footer-contact-list {
    list-style: none;
}
.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    margin-bottom: 1.1rem;
}
.contact-icon {
    color: var(--accent-gold);
    margin-top: 3px;
    flex-shrink: 0;
}
.contact-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
}
.contact-val {
    color: #e2e8f0;
    font-size: 0.92rem;
    font-weight: 500;
}
.contact-val.highlight {
    color: var(--accent-gold);
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 1.05rem;
}

/* Footer Bottom */
.footer-bottom {
    background: #040507;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding: 1.25rem 0;
    font-size: 0.82rem;
    color: var(--text-muted);
}
.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-copy a {
    color: var(--text-secondary);
}
.footer-tech-tag {
    font-family: var(--font-mono);
    color: var(--accent-green);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
}
.hud-indicator {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-green);
}

/* 16. Mobile Floating Quick Action Bar */
.mobile-quick-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(10, 12, 16, 0.95);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-color);
    padding: 0.65rem 1rem;
    z-index: 1050;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}
.quick-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.7rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 700;
    text-transform: uppercase;
}
.quick-call {
    background: var(--accent-gold);
    color: #000;
}
.quick-inquiry {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    border: 1px solid var(--border-color);
}

/* 17. Scroll to Top */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #141824;
    border: 1px solid var(--border-color);
    color: var(--accent-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 990;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}
.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.scroll-to-top:hover {
    background: var(--accent-gold);
    color: #0b0e14;
    transform: translateY(-3px);
}

/* 18. Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}
.toast {
    background: #0f131a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1.5rem;
    color: var(--text-white);
    font-size: 0.92rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: toastIn 0.3s ease forwards;
    pointer-events: auto;
}
.toast.success { border-color: var(--accent-green); }
.toast.error { border-color: var(--accent-red); }
@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 19. Responsive Media Queries */
@media (max-width: 1024px) {
    .desktop-nav { display: none; }
    .mobile-menu-toggle { display: flex; }
    .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .hero-media-img { height: 380px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 2.5rem; }
    .detail-grid { grid-template-columns: 1fr; }
    .configurator-grid { grid-template-columns: 1fr; }
    .config-summary-card { position: static; }
}

@media (max-width: 640px) {
    .telemetry-bar { display: none; }
    .header-container { height: 70px; }
    .logo-img { height: 38px; }
    .brand-badge { display: none; }
    .nav-cta { display: none; }
    .hero-stats { grid-template-columns: 1fr; gap: 1rem; }
    .form-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-bottom-inner { flex-direction: column; text-align: center; }
    .mobile-quick-bar { display: grid; }
    body { padding-bottom: 70px; }
    .scroll-to-top { bottom: 5rem; right: 1rem; }
}