:root {
    --bg: #0a0a0f;
    --bg2: #12121a;
    --bg3: #1a1a2e;
    --text: #e8e8f0;
    --text-dim: #8888a0;
    --accent: #00e5ff;
    --accent2: #7c3aed;
    --accent3: #f59e0b;
    --green: #10b981;
    --red: #ef4444;
    --border: #1e1e3a;
    --font: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10,10,15,0.85); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
.nav-container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
    color: var(--text); text-decoration: none; font-weight: 700;
    font-size: 1.1rem; letter-spacing: 0.05em;
}
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
    color: var(--text-dim); text-decoration: none; font-size: 0.9rem;
    font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.btn-nav-ai {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border: none; color: #000; padding: 6px 16px; border-radius: 8px;
    font-family: var(--font); font-size: 0.85rem; font-weight: 600;
    cursor: pointer; transition: transform 0.2s;
}
.btn-nav-ai:hover { transform: scale(1.05); }

.hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden; padding: 120px 24px 80px;
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0,229,255,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(124,58,237,0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(245,158,11,0.03) 0%, transparent 40%);
}
.hero-content { text-align: center; max-width: 720px; position: relative; z-index: 1; }
.hero-badge {
    display: inline-block; padding: 4px 14px; border-radius: 100px;
    background: rgba(0,229,255,0.1); border: 1px solid rgba(0,229,255,0.3);
    color: var(--accent); font-size: 0.8rem; font-weight: 600;
    letter-spacing: 0.05em; margin-bottom: 24px; text-transform: uppercase;
}
.hero h1 {
    font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 800;
    line-height: 1.05; letter-spacing: -0.03em;
    background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, var(--accent2) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}
.hero-subtitle {
    font-size: 1.15rem; color: var(--text-dim);
    max-width: 600px; margin: 0 auto 36px; line-height: 1.7;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn-primary, .btn-secondary {
    padding: 12px 28px; border-radius: 10px; font-family: var(--font);
    font-size: 0.95rem; font-weight: 600; cursor: pointer;
    text-decoration: none; display: inline-block; transition: all 0.2s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #000; border: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,229,255,0.25); }
.btn-secondary {
    background: transparent; color: var(--text); border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--accent); transform: translateY(-2px); }

section { padding: 100px 0; }
section h2 {
    font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; text-align: center;
    letter-spacing: -0.02em; margin-bottom: 16px;
}
.section-subtitle {
    text-align: center; color: var(--text-dim); font-size: 1.05rem;
    max-width: 600px; margin: 0 auto 56px; line-height: 1.7;
}

.problem-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.problem-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 14px; padding: 28px; transition: border-color 0.3s;
}
.problem-card:hover { border-color: rgba(0,229,255,0.3); }
.problem-icon { font-size: 1.8rem; display: block; margin-bottom: 12px; }
.problem-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.problem-card p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.6; }

.product-showcase {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px; margin-top: 40px;
}
.product-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 16px; padding: 32px;
}
.product-card.featured {
    border-color: rgba(0,229,255,0.2);
    background: linear-gradient(135deg, rgba(0,229,255,0.03), rgba(124,58,237,0.03));
}
.product-card h3 { font-size: 1.3rem; margin-bottom: 20px; }
.product-specs { display: flex; flex-direction: column; gap: 10px; }
.spec { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.spec:last-child { border-bottom: none; }
.spec-label { color: var(--text-dim); font-size: 0.85rem; }
.spec-val { font-size: 0.9rem; font-weight: 500; text-align: right; }

.tech-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}
.tech-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 14px; padding: 28px; transition: all 0.3s;
}
.tech-card:hover { border-color: var(--tech-color, var(--accent)); transform: translateY(-2px); }
.tech-icon {
    font-size: 2rem; margin-bottom: 12px; color: var(--tech-color, var(--accent));
}
.tech-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.tech-card p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.7; }
.tech-card em { color: var(--text); font-style: normal; font-weight: 500; }

.voidmode-section {
    background: radial-gradient(ellipse at 50% 0%, rgba(245,158,11,0.04) 0%, transparent 60%);
    border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.voidmode-badge {
    display: inline-flex; margin: 0 auto 16px; justify-content: center;
    padding: 4px 14px; border-radius: 100px;
    background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3);
    color: var(--accent3); font-size: 0.75rem; font-weight: 700;
    letter-spacing: 0.05em; text-transform: uppercase;
    width: fit-content;
}
.voidmode-content { max-width: 800px; margin: 0 auto; }
.voidmode-phases {
    display: flex; align-items: center; gap: 12px;
    flex-wrap: wrap; justify-content: center; margin-bottom: 32px;
}
.phase {
    background: var(--bg3); border: 1px solid var(--border);
    border-radius: 12px; padding: 16px; flex: 1; min-width: 140px; text-align: center;
}
.phase-num {
    width: 32px; height: 32px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent3), #f97316);
    color: #000; font-weight: 800; font-size: 0.9rem;
    display: inline-flex; align-items: center; justify-content: center; margin-bottom: 8px;
}
.phase h4 { font-size: 0.8rem; letter-spacing: 0.08em; color: var(--accent3); margin-bottom: 6px; }
.phase p { font-size: 0.8rem; color: var(--text-dim); line-height: 1.5; }
.phase-arrow { font-size: 1.5rem; color: var(--accent3); font-weight: 300; }
.voidmode-features {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}
.vm-feature {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 10px; padding: 14px 18px;
    font-size: 0.9rem; font-weight: 500;
}
.vm-feature span { margin-right: 8px; }

.about-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}
.about-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 14px; padding: 28px; transition: border-color 0.3s;
}
.about-card:hover { border-color: rgba(0,229,255,0.2); }
.about-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.about-card p { font-size: 0.9rem; color: var(--text-dim); line-height: 1.6; }

.cta-section {
    text-align: center;
    background: radial-gradient(ellipse at 50% 50%, rgba(0,229,255,0.04) 0%, transparent 60%);
}
.cta-section h2 { margin-bottom: 12px; }
.cta-section p { color: var(--text-dim); max-width: 500px; margin: 0 auto 32px; line-height: 1.7; }
.cta-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.footer {
    border-top: 1px solid var(--border); padding: 60px 0 0;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px; margin-bottom: 40px;
}
.footer-brand h4 { font-size: 1rem; margin-bottom: 8px; letter-spacing: 0.05em; }
.footer-brand p { font-size: 0.85rem; color: var(--text-dim); }
.footer-links h5 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; color: var(--text-dim); }
.footer-links a { display: block; color: var(--text-dim); text-decoration: none; font-size: 0.9rem; margin-bottom: 6px; transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-ai h5 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; color: var(--text-dim); }
.ai-status { font-size: 0.85rem; color: var(--text-dim); }
.status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--green); margin-right: 6px; }
.footer-bottom { border-top: 1px solid var(--border); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: 0.85rem; color: var(--text-dim); }

.chat-widget {
    position: fixed; bottom: 90px; right: 24px; width: 380px; max-width: calc(100vw - 48px);
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: 16px; display: none; flex-direction: column;
    z-index: 2000; box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    max-height: 500px;
}
.chat-widget.open { display: flex; }
.chat-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 16px 20px; border-bottom: 1px solid var(--border);
}
.chat-header strong { font-size: 0.95rem; display: block; }
.chat-model { font-size: 0.7rem; color: var(--text-dim); font-weight: 400; }
.chat-close { background: none; border: none; color: var(--text-dim); font-size: 1.2rem; cursor: pointer; padding: 4px; }
.chat-close:hover { color: var(--text); }
.chat-messages {
    flex: 1; padding: 16px 20px; overflow-y: auto;
    display: flex; flex-direction: column; gap: 12px;
    min-height: 200px; max-height: 320px;
}
.message { display: flex; gap: 10px; }
.msg-avatar {
    width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem;
}
.message.ai .msg-avatar { background: rgba(0,229,255,0.15); color: var(--accent); }
.message.user { flex-direction: row-reverse; }
.message.user .msg-avatar { background: rgba(124,58,237,0.15); color: var(--accent2); }
.msg-content {
    background: var(--bg3); border-radius: 12px;
    padding: 10px 14px; max-width: 85%;
}
.message.user .msg-content { background: rgba(124,58,237,0.1); }
.msg-content p { font-size: 0.9rem; line-height: 1.6; }
.chat-input-area {
    display: flex; gap: 8px; padding: 12px 20px;
    border-top: 1px solid var(--border);
}
#chat-input {
    flex: 1; background: var(--bg3); border: 1px solid var(--border);
    border-radius: 8px; padding: 10px 14px; color: var(--text);
    font-family: var(--font); font-size: 0.9rem; outline: none;
}
#chat-input:focus { border-color: var(--accent); }
#chat-send {
    width: 40px; height: 40px; border-radius: 8px; border: none;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #000; font-size: 1.1rem; cursor: pointer; font-weight: 700;
    transition: transform 0.2s;
}
#chat-send:hover { transform: scale(1.05); }
.chat-toggle {
    position: fixed; bottom: 24px; right: 24px; z-index: 2000;
    width: 52px; height: 52px; border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border: none; color: #000; cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(0,229,255,0.3); transition: transform 0.2s;
}
.chat-toggle:hover { transform: scale(1.1); }
.chat-toggle.hidden { display: none; }

.typing .msg-content::after {
    content: '...'; animation: blink 1.2s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

@media (max-width: 768px) {
    .nav-links a:not(.btn-nav-ai) { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .voidmode-phases { flex-direction: column; }
    .phase-arrow { transform: rotate(90deg); }
    .chat-widget { right: 12px; bottom: 80px; width: calc(100vw - 24px); }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
}