:root {
    --primary: #405de6;
    --primary-gradient: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
    --bg-dark: #121212;
    --bg-panel: #1e1e1e;
    --bg-hover: #2a2a2a;
    --text-main: #f5f5f5;
    --text-muted: #a0a0a0;
    --border: #333333;
    --accent-blue: #0095f6;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { background-color: var(--bg-dark); color: var(--text-main); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: 0.2s; }
ul { list-style: none; }

/* Demo Navbar */
.nav { background: rgba(30, 30, 30, 0.9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); padding: 15px 4%; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; }
.nav-brand { font-size: 22px; font-weight: 700; background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-family: 'Comic Sans MS', cursive, sans-serif; }
.nav-links { display: flex; gap: 25px; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-muted); }
.nav-links a.active, .nav-links a:hover { color: var(--text-main); }
.nav-btn { background: var(--accent-blue); color: white !important; padding: 8px 20px; border-radius: 6px; font-weight: 600; font-size: 14px; }
.nav-btn:hover { background: #1877f2; }

/* Demo Hero */
.hero { text-align: center; padding: 80px 20px 40px; }
.hero-tag { display: inline-block; padding: 4px 12px; background: rgba(0, 149, 246, 0.1); color: var(--accent-blue); border-radius: 20px; font-size: 12px; font-weight: 600; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
.hero h1 { font-size: 48px; font-weight: 700; margin-bottom: 20px; line-height: 1.2; }
.hero p { font-size: 18px; color: var(--text-muted); max-width: 600px; margin: 0 auto 40px; }
.btn-group { display: flex; gap: 15px; justify-content: center; margin-bottom: 60px; }
.btn { padding: 12px 28px; border-radius: 6px; font-weight: 600; font-size: 15px; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--accent-blue); color: white; }
.btn-primary:hover { background: #1877f2; }
.btn-secondary { background: var(--bg-panel); color: var(--text-main); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-hover); }

/* Desktop Mockup / Demo Frame */
.mockup-container { max-width: 1000px; margin: 0 auto 60px; padding: 0 20px; }
.mac-window { background: var(--bg-dark); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.5); }
.mac-header { background: var(--bg-panel); padding: 12px 15px; display: flex; align-items: center; border-bottom: 1px solid var(--border); }
.mac-dots { display: flex; gap: 8px; }
.mac-dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f56; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #27c93f; }
.mac-title { flex: 1; text-align: center; color: var(--text-muted); font-size: 12px; font-weight: 500; font-family: monospace; }

/* Stats Panel */
.stats-panel { background: var(--bg-panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 40px 0; margin-bottom: 60px; display: flex; justify-content: space-around; flex-wrap: wrap; }
.stat-box { text-align: center; padding: 0 20px; }
.stat-box h3 { font-size: 28px; font-weight: 700; color: var(--text-main); margin-bottom: 5px; }
.stat-box p { font-size: 13px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

/* Container */
.container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }
.section-title { font-size: 28px; font-weight: 700; margin-bottom: 40px; text-align: center; }

/* Grid Features */
.feat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 60px; }
.feat-card { background: var(--bg-panel); border: 1px solid var(--border); padding: 30px; border-radius: 8px; transition: 0.2s; }
.feat-card:hover { border-color: var(--accent-blue); transform: translateY(-3px); }
.feat-icon { margin-bottom: 15px; font-size: 24px; color: var(--accent-blue); }
.feat-card h3 { font-size: 18px; margin-bottom: 10px; }
.feat-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Guide / FAQ */
.list-panel { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 60px; overflow: hidden; }
.list-item { padding: 25px 30px; border-bottom: 1px solid var(--border); display: flex; gap: 20px; }
.list-item:last-child { border-bottom: none; }
.list-num { color: var(--accent-blue); font-weight: 700; font-size: 18px; font-family: monospace; }
.list-content h3 { font-size: 16px; margin-bottom: 8px; }
.list-content p { font-size: 14px; color: var(--text-muted); }

/* Showcase Image */
.showcase-img { width: 100%; display: block; border-bottom: 1px solid var(--border); }

/* Footer */
.footer { background: var(--bg-panel); border-top: 1px solid var(--border); padding: 40px 20px; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 15px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 13px; }
.footer-links a:hover { color: var(--text-main); }
.footer p { color: #666; font-size: 12px; }

@media (max-width: 768px) {
    .hero h1 { font-size: 36px; }
    .btn-group { flex-direction: column; padding: 0 40px; }
    .list-item { flex-direction: column; gap: 10px; }
}