/* Pratibmb Landing Page — no external fonts, no JS, no tracking */
:root {
  --bg: #0d0d0d;
  --bg-alt: #151515;
  --bg-card: #1a1a1a;
  --fg: #e8e4de;
  --fg-muted: #8a847a;
  --accent: #c4956a;
  --accent-dim: #9a7554;
  --border: #2a2725;
  --green: #4a9a4a;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "Menlo", "Monaco", "Cascadia Code", monospace;
  --max-w: 960px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 24px 80px;
  background: linear-gradient(180deg, #141210 0%, var(--bg) 100%);
}

.hero-logo {
  width: 200px;
  height: auto;
  margin-bottom: 16px;
  filter: drop-shadow(0 4px 24px rgba(196, 149, 106, 0.2));
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--fg) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 24px;
  color: var(--fg);
  margin-bottom: 16px;
  font-weight: 300;
}

.subtitle {
  font-size: 15px;
  color: var(--fg-muted);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 28px;
}

.hero-badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  padding: 5px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  color: var(--fg-muted);
  background: var(--bg-card);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: filter 0.2s;
}
.btn:hover { text-decoration: none; filter: brightness(1.1); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
}

.btn-download {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  background: var(--accent-dim);
  color: #fff;
  margin: 4px 4px 0 0;
  transition: filter 0.2s;
}
.btn-download:hover { filter: brightness(1.15); text-decoration: none; }

/* Sections */
section {
  padding: 80px 24px;
}

section:nth-child(even) {
  background: var(--bg-alt);
}

section h2 {
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.section-sub {
  text-align: center;
  color: var(--fg-muted);
  font-size: 15px;
  margin-bottom: 40px;
}

/* How It Works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
}

.step-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.step-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Platforms */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 16px;
  text-align: center;
  transition: border-color 0.2s;
}
.platform-card:hover { border-color: var(--accent-dim); }

.platform-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.platform-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.platform-card p {
  font-size: 12px;
  color: var(--fg-muted);
}

/* Downloads */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px 24px;
}

.dl-icon {
  font-size: 28px;
  margin-bottom: 10px;
}

.download-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.download-card p {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

.dl-note {
  text-align: center;
  font-size: 13px;
  color: var(--fg-muted);
  margin-top: 24px;
}

/* Fine-Tuning Table */
.ft-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 20px;
}

.ft-table th {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 2px solid var(--border);
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
}

.ft-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
}

.ft-table code {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--accent);
}

.ft-note {
  font-size: 13px;
  color: var(--fg-muted);
  text-align: center;
  font-style: italic;
}

/* Privacy */
.privacy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.privacy-card {
  text-align: center;
  padding: 24px 16px;
}

.priv-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.privacy-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.privacy-card p {
  font-size: 13px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Open Source */
.opensource {
  text-align: center;
}

.opensource p {
  max-width: 600px;
  margin: 0 auto 16px;
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.8;
}

.os-links {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 24px;
}

/* Footer */
footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

footer p {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 6px;
}

.footer-note {
  font-size: 11px;
  color: var(--border);
  font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; }
  .tagline { font-size: 18px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: 1fr; }
  .privacy-grid { grid-template-columns: repeat(2, 1fr); }
  .ft-table { font-size: 12px; }
  .ft-table th, .ft-table td { padding: 8px 6px; }
}

@media (max-width: 480px) {
  .hero { padding: 60px 16px 50px; }
  section { padding: 50px 16px; }
  .hero h1 { font-size: 28px; }
  .steps-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .ft-table { display: block; overflow-x: auto; }
}