/* === Variables & Reset === */
:root {
    --dark-900: #08090c;
    --dark-800: #0e1017;
    --dark-700: #151820;
    --dark-600: #1c1f2b;
    --dark-500: #252838;
    --chrome-100: #ecedf1;
    --chrome-200: #d4d6de;
    --chrome-300: #b0b3c0;
    --chrome-400: #8a8e9e;
    --chrome-500: #6b6f80;
    --gold: #d4a029;
    --gold-light: #e8b844;
    --gold-bright: #f0c850;
    --gold-dark: #b8862a;
    --gold-glow: rgba(212, 160, 41, 0.3);
    --gold-glow-strong: rgba(212, 160, 41, 0.5);
    --red: #c0392b;
    --red-bright: #e04838;
    --red-glow: rgba(192, 57, 43, 0.3);
    --white: #ffffff;
    --font-base: 'Segoe UI', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --radius: 8px;
    --radius-lg: 16px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-base);
    background: var(--dark-900);
    color: var(--chrome-200);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* === Layout === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 72px;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--chrome-400);
    line-height: 1.7;
}

/* === Gold separator lines === */
.section-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold-bright), var(--gold-dark));
    margin: 24px auto 0;
    border-radius: 2px;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 36px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold), var(--gold-light));
    color: var(--dark-900);
    box-shadow: 0 4px 24px var(--gold-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--gold), var(--gold-light), var(--gold-bright));
    box-shadow: 0 8px 40px var(--gold-glow-strong), inset 0 1px 0 rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--chrome-200);
    border: 2px solid var(--chrome-500);
}

.btn-outline:hover {
    border-color: var(--gold);
    color: var(--gold-light);
    box-shadow: 0 0 20px rgba(212, 160, 41, 0.1);
}

.btn-red {
    background: linear-gradient(135deg, var(--red), var(--red-bright));
    color: var(--white);
    box-shadow: 0 4px 24px var(--red-glow);
}

.btn-red:hover {
    box-shadow: 0 8px 40px var(--red-glow);
    transform: translateY(-2px);
}

.btn-nav {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--gold-dark), var(--gold));
    color: var(--dark-900);
    border-radius: var(--radius);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
}

.btn-nav:hover {
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    box-shadow: 0 4px 20px var(--gold-glow);
}

.btn-full {
    width: 100%;
}

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(8, 9, 12, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(212, 160, 41, 0.1);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo img {
    height: 44px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--chrome-400);
    transition: color var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav-links a:hover {
    color: var(--gold-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--chrome-200);
    transition: all var(--transition);
}

/* === Hero === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0 80px;
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 50% 40% at 50% 35%, rgba(212, 160, 41, 0.06), transparent 70%),
        radial-gradient(ellipse 80% 50% at 50% 50%, rgba(192, 57, 43, 0.03), transparent 70%),
        radial-gradient(ellipse 100% 100% at 50% 100%, rgba(8, 9, 12, 1) 0%, transparent 50%);
}

/* Animated gold border glow at top */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.4;
}

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

.hero-badge {
    margin: 0 auto 32px;
}

/* === Hero Logo (large, centered, prominent) === */
.hero-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    position: relative;
}

.hero-logo img {
    width: min(80vw, 520px);
    height: auto;
    filter: drop-shadow(0 0 60px rgba(212, 160, 41, 0.2)) drop-shadow(0 0 120px rgba(212, 160, 41, 0.08));
    animation: logoReveal 1.2s ease-out;
}

@keyframes logoReveal {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Subtle golden ring behind logo */
.hero-logo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid rgba(212, 160, 41, 0.08);
    animation: ringPulse 4s ease-in-out infinite;
    pointer-events: none;
}

.hero-logo::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 550px;
    height: 550px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid rgba(212, 160, 41, 0.04);
    animation: ringPulse 4s ease-in-out 1s infinite;
    pointer-events: none;
}

@keyframes ringPulse {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.04); }
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero h1 .text-gold {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold-light), var(--gold-bright));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--chrome-400);
    max-width: 580px;
    margin: 0 auto 44px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--chrome-500);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.8; }
}

/* === Patent Badge === */
.patent-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(212, 160, 41, 0.08);
    border: 1px solid rgba(212, 160, 41, 0.2);
    border-radius: 100px;
    color: var(--gold-light);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

/* === About Section === */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.about-text p {
    margin-bottom: 16px;
    font-size: 1.02rem;
    line-height: 1.8;
}

.about-lead {
    font-size: 1.15rem !important;
    color: var(--chrome-100);
    font-weight: 500;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: var(--dark-700);
    border: 1px solid rgba(212, 160, 41, 0.08);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.stat-card:hover {
    border-color: rgba(212, 160, 41, 0.2);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-bright));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--chrome-500);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

/* === Features Section === */
.features {
    background: var(--dark-800);
}

/* Diagonal gold line separator */
.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 160, 41, 0.15), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--dark-700);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    border-color: rgba(212, 160, 41, 0.15);
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(212, 160, 41, 0.04);
}

.feature-card:hover::after {
    opacity: 1;
}

.feature-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 24px;
    color: var(--gold);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
    letter-spacing: 0.01em;
}

.feature-card p {
    font-size: 0.92rem;
    color: var(--chrome-400);
    line-height: 1.7;
}

/* === How It Works === */
.how-it-works::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 160, 41, 0.15), transparent);
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    gap: 0;
}

.step-card {
    flex: 1;
    background: var(--dark-800);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    position: relative;
    transition: all var(--transition);
    overflow: hidden;
}

.step-card:hover {
    border-color: rgba(212, 160, 41, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(180deg, rgba(212, 160, 41, 0.25), rgba(212, 160, 41, 0.05));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 16px;
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--chrome-400);
    line-height: 1.7;
}

.step-visual {
    width: 80px;
    height: 80px;
    margin: 20px auto 0;
    color: var(--gold);
    opacity: 0.4;
}

.step-visual svg {
    width: 100%;
    height: 100%;
}

.step-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    min-width: 40px;
    height: 40px;
    margin-top: 60px;
    color: var(--gold);
    opacity: 0.3;
}

.step-connector svg {
    width: 100%;
    height: 100%;
}

/* === Patent Callout === */
.patent-section {
    padding: 60px 0;
}

.patent-callout {
    display: flex;
    align-items: center;
    gap: 32px;
    background: linear-gradient(135deg, rgba(212, 160, 41, 0.06), rgba(192, 57, 43, 0.03));
    border: 1px solid rgba(212, 160, 41, 0.15);
    border-radius: var(--radius-lg);
    padding: 52px;
    position: relative;
    overflow: hidden;
}

.patent-callout::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-dark), var(--red), var(--gold-dark));
}

.patent-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    color: var(--gold);
}

.patent-icon svg {
    width: 100%;
    height: 100%;
}

.patent-text h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
}

.patent-text p {
    font-size: 0.95rem;
    color: var(--chrome-400);
    line-height: 1.7;
}

/* === Contact Section === */
.contact {
    background: var(--dark-800);
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 160, 41, 0.15), transparent);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-form {
    background: var(--dark-700);
    border: 1px solid rgba(212, 160, 41, 0.08);
    border-radius: var(--radius-lg);
    padding: 44px;
    position: relative;
    overflow: hidden;
}

.contact-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gold-dark), var(--gold-light), var(--gold-dark));
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--chrome-300);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    background: var(--dark-800);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    color: var(--white);
    font-size: 0.95rem;
    font-family: var(--font-base);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px var(--gold-glow);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238a8e9e' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    display: none;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
    padding: 16px;
    background: rgba(212, 160, 41, 0.08);
    border: 1px solid rgba(212, 160, 41, 0.2);
    border-radius: var(--radius);
    color: var(--gold-light);
    font-weight: 600;
    font-size: 0.95rem;
}

.form-success.visible {
    display: flex;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-top: 8px;
}

.info-card {
    background: var(--dark-700);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold), var(--gold-dark));
    opacity: 0;
    transition: opacity var(--transition);
}

.info-card:hover {
    border-color: rgba(212, 160, 41, 0.12);
    transform: translateX(4px);
}

.info-card:hover::before {
    opacity: 1;
}

.info-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
}

.info-card p {
    font-size: 0.9rem;
    color: var(--chrome-400);
    line-height: 1.7;
}

/* === Footer === */
.footer {
    padding: 48px 0 32px;
    border-top: 1px solid rgba(212, 160, 41, 0.08);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.footer-brand .logo img {
    height: 36px;
    margin: 0 auto;
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--chrome-500);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--chrome-500);
    transition: color var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.footer-links a:hover {
    color: var(--gold-light);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    width: 100%;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.78rem;
    color: var(--chrome-500);
    letter-spacing: 0.02em;
}

/* === Scroll Animations === */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps-grid {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .step-card {
        flex: 0 0 calc(50% - 16px);
    }

    .step-connector {
        display: none;
    }

    .hero-logo img {
        width: min(75vw, 420px);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        flex-direction: column;
        background: var(--dark-800);
        padding: 80px 32px 32px;
        gap: 24px;
        transition: right var(--transition);
        border-left: 1px solid rgba(212, 160, 41, 0.1);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-links a {
        font-size: 1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        flex-direction: column;
    }

    .step-card {
        flex: 0 0 100%;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .patent-callout {
        flex-direction: column;
        text-align: center;
        padding: 32px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

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

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px 24px;
    }

    .hero-logo::before,
    .hero-logo::after {
        display: none;
    }

    .hero-logo img {
        width: min(85vw, 360px);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .contact-form {
        padding: 24px;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 20px 16px;
    }

    .hero-logo img {
        width: 90vw;
    }
}