/* ============================================
   PANELCOMPUTE.COM — PREMIUM DOMAIN SITE
   Dark tech aesthetic with electric accents
   ============================================ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --accent: #00d4aa;
    --accent-dim: #00d4aa20;
    --accent-glow: #00d4aa40;
    --border: #2a2a35;
    --border-light: #3a3a48;
    --gradient-start: #00d4aa;
    --gradient-end: #00a8ff;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* NAVIGATION */
.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: 16px 0;
}
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo {
    font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700;
    color: var(--text-primary); text-decoration: none; letter-spacing: -0.5px;
}
.logo .dot { color: var(--accent); }
.nav-links { display: flex; list-style: none; gap: 32px; align-items: center; }
.nav-links a {
    color: var(--text-secondary); text-decoration: none; font-size: 0.95rem;
    font-weight: 500; transition: var(--transition); position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-primary); }
.nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--accent); transition: var(--transition);
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
    background: var(--accent); color: var(--bg-primary) !important;
    padding: 10px 24px; border-radius: var(--radius-sm); font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: #00e6b8; box-shadow: 0 0 20px var(--accent-glow); }
.mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; cursor: pointer; }

/* HERO */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding: 140px 0 80px; overflow: hidden; }
.hero-bg {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 20% 50%, var(--accent-dim) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 168, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}
.hero-badge {
    display: inline-block; background: var(--accent-dim); color: var(--accent);
    padding: 8px 20px; border-radius: 100px; font-size: 0.85rem; font-weight: 600;
    letter-spacing: 0.5px; margin-bottom: 32px; border: 1px solid var(--accent-glow);
}
.hero-title {
    font-family: var(--font-heading); font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 700; line-height: 1.1; letter-spacing: -2px; margin-bottom: 24px;
}
.hero-title .line { display: block; }
.hero-title .accent {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle { font-size: clamp(1.1rem, 2vw, 1.35rem); color: var(--text-secondary); max-width: 640px; margin-bottom: 40px; line-height: 1.7; }
.hero-cta-group { display: flex; gap: 16px; margin-bottom: 80px; flex-wrap: wrap; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 14px 32px; border-radius: var(--radius-sm); font-family: var(--font-heading);
    font-size: 1rem; font-weight: 600; text-decoration: none; cursor: pointer;
    border: none; transition: var(--transition);
}
.btn-primary { background: var(--accent); color: var(--bg-primary); }
.btn-primary:hover { background: #00e6b8; box-shadow: 0 0 30px var(--accent-glow); transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--border-light); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }
.btn-light { background: var(--text-primary); color: var(--bg-primary); }
.btn-light:hover { background: #fff; transform: translateY(-2px); }
.btn-large { padding: 18px 48px; font-size: 1.1rem; }
.btn-full { width: 100%; }

.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; max-width: 800px; }
.stat { display: flex; flex-direction: column; gap: 8px; }
.stat-num { font-family: var(--font-heading); font-size: 1.75rem; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.4; }

/* SECTIONS */
section { padding: 100px 0; }
.section-title { font-family: var(--font-heading); font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; text-align: center; margin-bottom: 60px; letter-spacing: -1px; }
.alt { background: var(--bg-secondary); }

/* TREND CARDS */
.trend-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.trend-card { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px 28px; transition: var(--transition); }
.trend-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.trend-icon { font-size: 2rem; margin-bottom: 20px; }
.trend-card h3 { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 12px; color: var(--text-primary); }
.trend-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* DOMAIN BANNER */
.domain-banner { background: linear-gradient(135deg, var(--accent), var(--gradient-end)); padding: 100px 0; text-align: center; }
.banner-content h2 { font-family: var(--font-heading); font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; color: var(--bg-primary); margin-bottom: 16px; letter-spacing: -1px; }
.banner-tagline { font-size: 1.2rem; color: rgba(10, 10, 15, 0.8); max-width: 600px; margin: 0 auto 32px; line-height: 1.6; }

/* PAGE HEADER */
.page-header { padding: 160px 0 80px; text-align: center; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.page-header.compact { padding: 140px 0 60px; }
.page-header h1 { font-family: var(--font-heading); font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; margin-bottom: 20px; letter-spacing: -1px; }
.lead { font-size: 1.25rem; color: var(--text-secondary); max-width: 700px; margin: 0 auto; line-height: 1.7; }

/* TWO COLUMN */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.col-text h2 { font-family: var(--font-heading); font-size: 2rem; margin-bottom: 20px; letter-spacing: -0.5px; }
.col-text p { color: var(--text-secondary); margin-bottom: 16px; line-height: 1.8; }

/* Wafer vs Panel Visual */
.shape-comparison { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.shape { display: flex; align-items: center; justify-content: center; text-align: center; font-family: var(--font-heading); font-weight: 600; color: var(--text-primary); border: 2px solid var(--border-light); transition: var(--transition); }
.shape.wafer { width: 200px; height: 200px; border-radius: 50%; background: var(--bg-tertiary); }
.shape.panel { width: 280px; height: 200px; border-radius: var(--radius); background: linear-gradient(135deg, var(--accent-dim), transparent); border-color: var(--accent); }
.shape span { font-size: 0.9rem; }
.shape span small { display: block; color: var(--text-muted); font-weight: 400; margin-top: 4px; }
.vs { font-family: var(--font-heading); font-weight: 700; color: var(--accent); font-size: 1.2rem; }

/* STACK GRID */
.stack-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.stack-item { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; position: relative; overflow: hidden; }
.stack-item::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: linear-gradient(90deg, var(--accent), var(--gradient-end)); }
.stack-num { font-family: var(--font-heading); font-size: 2.5rem; font-weight: 700; color: var(--accent); opacity: 0.3; display: block; margin-bottom: 16px; }
.stack-item h3 { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 12px; }
.stack-item p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* INDUSTRY SHOWCASE */
.industry-row { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; margin-bottom: 120px; }
.industry-row.reverse { direction: rtl; }
.industry-row.reverse > * { direction: ltr; }
.industry-row:last-child { margin-bottom: 0; }
.industry-tag { display: inline-block; background: var(--accent-dim); color: var(--accent); padding: 6px 16px; border-radius: 100px; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 20px; }
.industry-content h2 { font-family: var(--font-heading); font-size: 2.2rem; margin-bottom: 20px; letter-spacing: -0.5px; }
.industry-content p { color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.feature-list { list-style: none; }
.feature-list li { padding: 8px 0; padding-left: 28px; position: relative; color: var(--text-secondary); }
.feature-list li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* Robot Panel Diagram */
.panel-diagram { position: relative; width: 300px; height: 400px; margin: 0 auto; }
.panel-node { position: absolute; background: var(--bg-tertiary); border: 1px solid var(--accent); border-radius: var(--radius-sm); padding: 12px 20px; font-family: var(--font-heading); font-size: 0.85rem; font-weight: 600; color: var(--accent); text-align: center; box-shadow: 0 0 20px var(--accent-glow); }
.panel-node.head { top: 20px; left: 50%; transform: translateX(-50%); }
.panel-node.torso { top: 140px; left: 50%; transform: translateX(-50%); padding: 20px 32px; background: var(--accent-dim); }
.panel-node.arm-l { top: 140px; left: 10px; }
.panel-node.arm-r { top: 140px; right: 10px; }

/* Car Diagram */
.car-diagram { display: flex; justify-content: center; }
.car-body { width: 320px; height: 160px; background: var(--bg-tertiary); border: 2px solid var(--border-light); border-radius: 80px 80px 20px 20px; position: relative; display: flex; align-items: center; justify-content: center; }
.car-panel { position: absolute; background: var(--accent-dim); border: 1px solid var(--accent); border-radius: var(--radius-sm); padding: 8px 16px; font-size: 0.75rem; font-weight: 600; color: var(--accent); }
.car-panel.front { top: 20px; left: 50%; transform: translateX(-50%); }
.car-panel.center { position: relative; padding: 16px 24px; font-size: 0.9rem; }
.car-panel.rear { bottom: 20px; left: 50%; transform: translateX(-50%); }

/* AI Concept */
.ai-concept { position: relative; width: 280px; height: 280px; margin: 0 auto; display: flex; align-items: center; justify-content: center; }
.ai-ring { position: absolute; border: 2px solid var(--accent); border-radius: 50%; opacity: 0.3; }
.ring-1 { width: 200px; height: 200px; animation: pulse 3s ease-in-out infinite; }
.ring-2 { width: 260px; height: 260px; animation: pulse 3s ease-in-out infinite 1.5s; }
.ai-core { width: 140px; height: 140px; background: linear-gradient(135deg, var(--accent), var(--gradient-end)); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: var(--font-heading); font-weight: 700; color: var(--bg-primary); font-size: 1rem; text-align: center; box-shadow: 0 0 40px var(--accent-glow); z-index: 2; }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 0.3; } 50% { transform: scale(1.05); opacity: 0.15; } }

/* VALUE CARDS */
.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.value-card { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; transition: var(--transition); }
.value-card:hover { border-color: var(--border-light); transform: translateY(-2px); }
.value-card.highlight { border-color: var(--accent); background: linear-gradient(135deg, var(--accent-dim), transparent); }
.value-label { display: inline-block; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1.5px; color: var(--accent); margin-bottom: 16px; }
.value-card h3 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 12px; }
.value-card p { color: var(--text-secondary); line-height: 1.7; }

/* BUYER CARDS */
.buyer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.buyer-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.buyer-card h4 { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 12px; color: var(--accent); }
.buyer-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* CONTACT */
.contact-section { padding: 80px 0 120px; }
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; align-items: start; }
.contact-info h3 { font-family: var(--font-heading); font-size: 1.5rem; margin-bottom: 24px; }
.info-list { list-style: none; margin-bottom: 40px; }
.info-list li { padding: 12px 0; padding-left: 28px; position: relative; color: var(--text-secondary); }
.info-list li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: 700; }
.trust-badge { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.trust-badge span { display: block; font-family: var(--font-heading); font-weight: 600; color: var(--accent); margin-bottom: 8px; }
.trust-badge p { color: var(--text-secondary); font-size: 0.9rem; }
.contact-form { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 48px; }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 8px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; color: var(--text-primary); font-family: var(--font-body); font-size: 1rem; transition: var(--transition); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.form-group textarea { resize: vertical; min-height: 120px; }
.hidden { display: none; }
.form-note { text-align: center; color: var(--text-muted); font-size: 0.85rem; margin-top: 16px; }

/* CTA SECTION */
.cta-section { text-align: center; padding: 100px 0; }
.cta-section.dark { background: var(--bg-secondary); }
.cta-section h2 { font-family: var(--font-heading); font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 16px; letter-spacing: -1px; }
.cta-section p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 40px; }

/* FOOTER */
.footer { background: var(--bg-secondary); border-top: 1px solid var(--border); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; margin-bottom: 40px; }
.footer-grid h4 { font-family: var(--font-heading); font-size: 1.1rem; margin-bottom: 20px; }
.footer-grid p, .footer-grid a { color: var(--text-secondary); text-decoration: none; font-size: 0.95rem; line-height: 1.8; }
.footer-grid a:hover { color: var(--accent); }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 30px; text-align: center; color: var(--text-muted); font-size: 0.9rem; }
.footer-bottom a { color: var(--text-secondary); text-decoration: none; margin: 0 8px; }
.footer-bottom a:hover { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 900px) {
    .two-col, .contact-layout, .industry-row, .industry-row.reverse { grid-template-columns: 1fr; gap: 40px; direction: ltr; }
    .industry-row.reverse > * { direction: ltr; }
    .hero-stats { grid-template-columns: 1fr; gap: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .mobile-toggle { display: block; }
    .nav-links { position: fixed; top: 70px; left: 0; right: 0; background: var(--bg-primary); border-bottom: 1px solid var(--border); flex-direction: column; padding: 24px; gap: 20px; transform: translateY(-150%); transition: var(--transition); }
    .nav-links.active { transform: translateY(0); }
}
@media (max-width: 600px) {
    .hero { padding: 120px 0 60px; }
    section { padding: 60px 0; }
    .contact-form { padding: 28px; }
    .value-grid, .buyer-grid, .trend-grid { grid-template-columns: 1fr; }
}