/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a28;
    --bg-card-hover: #222236;
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a82;
    --accent: #00d4ff;
    --accent-deep: #0080ff;
    --accent-glow: rgba(0, 212, 255, 0.15);
    --gradient: linear-gradient(135deg, #00d4ff, #0080ff);
    --border: rgba(255, 255, 255, 0.06);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

a { color: var(--accent); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.85; }

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

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
}

.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 36px; height: 36px; }
.logo-text {
    font-family: var(--font-display);
    font-weight: 700; font-size: 1.2rem;
    color: var(--text-primary);
}

.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem; font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text-primary); opacity: 1; }

.btn-nav {
    padding: 8px 20px;
    background: var(--gradient);
    color: #fff !important;
    border-radius: 50px;
    font-weight: 600;
}
.btn-nav:hover { opacity: 0.9; }

.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; }

/* ===== Hero ===== */
.hero {
    min-height: 100vh;
    display: flex; align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(0, 128, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
    z-index: 0;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative; z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-glow);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 24px;
}

.hero-text h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-stats {
    display: flex; gap: 40px;
    margin-bottom: 40px;
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat { display: flex; flex-direction: column; }
.stat-number {
    font-family: var(--font-display);
    font-size: 1.8rem; font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn-primary {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px;
    background: var(--gradient);
    color: #fff;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none; cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3); }

.btn-secondary {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: border-color 0.2s, background 0.2s;
}
.btn-secondary:hover { border-color: var(--accent); background: var(--accent-glow); }

.hero-image { display: flex; justify-content: center; }
.hero-image-wrapper { position: relative; }
.hero-image-glow {
    position: absolute; inset: -40px;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15), transparent 70%);
    filter: blur(40px);
    z-index: 0;
}
.hero-img {
    position: relative; z-index: 1;
    max-height: 480px;
    border-radius: var(--radius);
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.5));
}

.hero-scroll {
    position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    color: var(--text-muted); font-size: 0.8rem;
}
.scroll-line {
    width: 1px; height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
}

/* ===== Section Headers ===== */
.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--accent-glow);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}
.section-header h2 {
    font-family: var(--font-display);
    font-size: 2.5rem; font-weight: 700;
    margin-bottom: 16px;
}
.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About ===== */
.about { padding: 100px 0; }
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: transform 0.3s, border-color 0.3s;
}
.about-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.2); }
.about-card-icon { font-size: 2.5rem; margin-bottom: 16px; }
.about-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem; font-weight: 600;
    margin-bottom: 12px;
}
.about-card p { color: var(--text-secondary); font-size: 0.95rem; }

/* ===== Product ===== */
.product {
    padding: 100px 0;
    background: var(--bg-secondary);
}
.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.product-image-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
}
.product-info h3 {
    font-family: var(--font-display);
    font-size: 1.8rem; font-weight: 700;
    margin-bottom: 8px;
}
.product-tagline {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 28px;
}
.feature-list { list-style: none; display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.feature-list li { display: flex; gap: 14px; align-items: flex-start; }
.feature-icon {
    flex-shrink: 0;
    width: 28px; height: 28px;
    background: var(--accent-glow);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
    font-size: 0.85rem; font-weight: 700;
}
.feature-list li div { display: flex; flex-direction: column; gap: 2px; }
.feature-list strong { font-size: 0.95rem; }
.feature-list span { font-size: 0.88rem; color: var(--text-secondary); }

.product-systems { display: flex; gap: 12px; }
.system-card {
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex; flex-direction: column; gap: 4px;
}
.system-card.active { border-color: var(--accent); background: var(--accent-glow); }
.system-label { font-weight: 700; font-size: 0.9rem; color: var(--accent); }
.system-desc { font-size: 0.8rem; color: var(--text-secondary); }

/* ===== Comparison ===== */
.comparison { padding: 100px 0; }
.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.comparison-table thead {
    background: var(--bg-card);
}
.comparison-table th {
    padding: 18px 20px;
    text-align: center;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.comparison-table th.col-feature { text-align: left; width: 20%; }
.col-roboc { background: rgba(0, 212, 255, 0.05); }
.table-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient);
    border-radius: 50px;
    color: #fff;
    font-size: 0.85rem;
}
.comparison-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    text-align: center;
    color: var(--text-secondary);
}
.comparison-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--text-primary);
}
.comparison-table td.col-roboc { background: rgba(0, 212, 255, 0.03); }
.highlight { color: var(--accent); font-weight: 700; }
.comparison-note {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== Technology ===== */
.technology {
    padding: 100px 0;
    background: var(--bg-secondary);
}
.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}
.tech-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.2); }
.tech-number {
    font-family: var(--font-display);
    font-size: 3rem; font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    position: absolute;
    top: 12px; right: 24px;
}
.tech-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem; font-weight: 600;
    margin-bottom: 12px;
}
.tech-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== Indications ===== */
.indications { padding: 100px 0; }
.indications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.indication-card {
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 28px;
    transition: transform 0.3s, border-color 0.3s;
}
.indication-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.2); }
.indication-icon { font-size: 3rem; margin-bottom: 16px; }
.indication-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem; font-weight: 600;
    margin-bottom: 10px;
}
.indication-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(0, 128, 255, 0.08));
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.cta-content { text-align: center; }
.cta-content h2 {
    font-family: var(--font-display);
    font-size: 2rem; font-weight: 700;
    margin-bottom: 16px;
}
.cta-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 550px;
    margin: 0 auto 32px;
}
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn-outline {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: border-color 0.2s, background 0.2s;
}
.btn-outline:hover { border-color: var(--accent); background: var(--accent-glow); }

/* ===== Contact ===== */
.contact { padding: 100px 0; }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-item {
    display: flex; gap: 16px;
    margin-bottom: 28px;
}
.contact-icon { font-size: 1.8rem; }
.contact-item h4 {
    font-size: 0.95rem; font-weight: 600;
    margin-bottom: 4px;
}
.contact-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}
.form-group { margin-bottom: 16px; }
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.form-group textarea { resize: vertical; }
.btn-full { width: 100%; }

/* ===== Footer ===== */
.footer {
    padding: 60px 0 30px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}
.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 40px;
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
    max-width: 300px;
}
.footer-links { display: flex; gap: 60px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}
.footer-col a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text h1 { font-size: 2.5rem; }
    .hero-desc { margin: 0 auto 36px; }
    .hero-stats { justify-content: center; }
    .hero-cta { justify-content: center; }
    .hero-image { order: -1; }
    .hero-img { max-height: 300px; }
    .about-grid { grid-template-columns: 1fr; }
    .product-showcase { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: 1fr; }
    .indications-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-content { flex-direction: column; gap: 40px; }
    .footer-links { gap: 40px; }
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .section-header h2 { font-size: 2rem; }
}

@media (max-width: 600px) {
    .hero-text h1 { font-size: 2rem; }
    .hero-stats { flex-direction: column; gap: 16px; align-items: center; }
    .hero-cta { flex-direction: column; }
    .comparison-table { font-size: 0.8rem; }
    .comparison-table th, .comparison-table td { padding: 12px 10px; }
}