/* Taktik Bisnis Design System (Anti-Slop 2.0 Compliant) */
:root {
  --bg: #090d16;
  --surface: #0f172a;
  --surface-border: #1e293b;
  --text-primary: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #ffd700;
  --accent-hover: #e6c200;
  --accent-text: #090d16;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", sans-serif;
  --font-mono: "JetBrains Mono", "Geist Mono", monospace;
}

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

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}

/* PWA Install Banner */
.pwa-banner {
  display: none;
  background: var(--surface);
  border: 1px solid rgba(255, 215, 0, 0.3);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 24px;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.pwa-banner.show {
  display: flex;
}

.pwa-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

.pwa-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}

/* Header & Brand Navigation */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--surface-border);
  margin-bottom: 40px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 40px;
  width: auto;
  max-height: 44px;
  object-fit: contain;
  display: block;
  transition: opacity 0.15s ease;
}

.brand-logo:hover {
  opacity: 0.9;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 20px;
  transition: color 0.15s ease;
}

nav a:hover {
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  margin-bottom: 48px;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.2);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 680px;
  margin-bottom: 28px;
}

/* Actions & Buttons */
.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--surface-border);
}

.btn-secondary:hover {
  border-color: #334155;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Grid & Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 24px;
}

.card-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 8px;
}

.card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Legal Content */
.legal-content {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  padding: 32px;
  margin-top: 24px;
}

.legal-content h2 {
  font-size: 20px;
  margin: 24px 0 8px;
  color: var(--text-primary);
}

.legal-content p, .legal-content ul {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.legal-content ul {
  padding-left: 20px;
}

/* Footer */
footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--surface-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 16px;
}

footer a:hover {
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 640px) {
  h1 { font-size: 24px; }
  header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .brand-logo { height: 34px; }
  nav a { margin-left: 0; margin-right: 16px; }
  footer { flex-direction: column; gap: 12px; align-items: flex-start; }
}