/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #2da44e;
  --accent-hover: #3fb950;
  --danger: #f85149;
  --warning: #d29922;
  --link: #58a6ff;
  --added: #3fb950;
  --fixed: #f85149;
  --improved: #d29922;
  --removed: #f85149;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --radius: 6px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
}

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

/* ─── Nav ──────────────────────────────────────────────────────────────────── */
nav {
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}
.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.logo { font-weight: 700; font-size: 1.1rem; color: var(--text); }
.logo:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 16px; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* ─── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }
.btn-secondary { background: var(--bg2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--text-muted); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--text-muted); color: var(--text); }
.btn-outline.disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn-nav { border: 1px solid var(--accent); color: var(--accent); padding: 6px 12px; border-radius: var(--radius); }
.btn-nav:hover { background: var(--accent); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-full { width: 100%; }

/* ─── Flash messages ───────────────────────────────────────────────────────── */
.flash-messages { padding: 12px 24px; max-width: 960px; margin: 0 auto; }
.flash { padding: 10px 16px; border-radius: var(--radius); margin-bottom: 8px; font-size: 0.9rem; }
.flash-error { background: rgba(248, 81, 73, 0.15); border: 1px solid var(--danger); color: var(--danger); }
.flash-success { background: rgba(47, 164, 78, 0.15); border: 1px solid var(--accent); color: var(--accent); }

/* ─── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: 80px 24px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 640px; margin: 0 auto; }
.hero h1 { font-size: 2.4rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.accent { color: var(--accent); }
.subtitle { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 32px; line-height: 1.7; }
.hero-cta { display: flex; gap: 12px; justify-content: center; margin-bottom: 16px; flex-wrap: wrap; }
.social-proof { color: var(--text-muted); font-size: 0.85rem; }

/* ─── Features ─────────────────────────────────────────────────────────────── */
.features { padding: 64px 24px; border-bottom: 1px solid var(--border); }
.features-inner { max-width: 960px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 32px; }
.feature { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.feature-icon { font-size: 2rem; display: block; margin-bottom: 12px; }
.feature h3 { margin-bottom: 8px; font-size: 1.05rem; }
.feature p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; }

/* ─── Demo ─────────────────────────────────────────────────────────────────── */
.demo { padding: 64px 24px; border-bottom: 1px solid var(--border); }
.demo-inner { max-width: 640px; margin: 0 auto; text-align: center; }
.demo-inner h2 { margin-bottom: 8px; }
.demo-inner p { color: var(--text-muted); margin-bottom: 24px; }
.demo-placeholder {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.demo-link { font-size: 1.1rem; font-weight: 500; }

/* ─── How it works ─────────────────────────────────────────────────────────── */
.how-it-works { padding: 64px 24px; border-bottom: 1px solid var(--border); }
.how-inner { max-width: 960px; margin: 0 auto; }
.how-inner h2 { text-align: center; margin-bottom: 40px; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; }
.step { text-align: center; }
.step-num { display: inline-block; width: 36px; height: 36px; line-height: 36px; background: var(--accent); color: #fff; border-radius: 50%; font-weight: 700; font-size: 1rem; margin-bottom: 12px; }
.step h3 { margin-bottom: 6px; font-size: 0.95rem; }
.step p { color: var(--text-muted); font-size: 0.85rem; }

/* ─── Pricing ───────────────────────────────────────────────────────────────── */
.pricing { padding: 64px 24px; border-bottom: 1px solid var(--border); }
.pricing-inner { max-width: 960px; margin: 0 auto; }
.pricing-inner h2 { text-align: center; margin-bottom: 32px; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; max-width: 720px; margin: 0 auto; }
.plan { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.plan h3 { font-size: 1rem; margin-bottom: 8px; }
.price { font-size: 2rem; font-weight: 800; margin-bottom: 16px; }
.price span { font-size: 0.9rem; font-weight: 400; color: var(--text-muted); }
.plan ul { list-style: none; margin-bottom: 20px; }
.plan li { padding: 6px 0; font-size: 0.9rem; color: var(--text-muted); border-bottom: 1px solid var(--border); }
.plan li::before { content: "✓ "; color: var(--accent); }
.plan .btn { width: 100%; text-align: center; }
.plan-free { border-color: var(--accent); }
.plan-starter { border-color: var(--border); }
.plan-pro { border-color: var(--border); }

/* ─── CTA bottom ────────────────────────────────────────────────────────────── */
.cta-bottom { padding: 64px 24px; text-align: center; }
.cta-inner { max-width: 480px; margin: 0 auto; }
.cta-inner h2 { margin-bottom: 12px; }
.cta-inner p { color: var(--text-muted); margin-bottom: 24px; }

/* ─── Auth pages ───────────────────────────────────────────────────────────── */
.auth-page { display: flex; justify-content: center; padding: 60px 24px; }
.auth-card { width: 100%; max-width: 400px; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.auth-card h1 { margin-bottom: 6px; font-size: 1.5rem; }
.auth-subtitle { color: var(--text-muted); margin-bottom: 24px; font-size: 0.9rem; }
.auth-switch { text-align: center; margin-top: 16px; font-size: 0.9rem; color: var(--text-muted); }

/* ─── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 4px; color: var(--text-muted); }
.label-opt { font-weight: 400; color: var(--text-muted); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 9px 12px;
  font-size: 0.9rem;
  font-family: var(--font);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.readonly-input { background: var(--bg3) !important; color: var(--text-muted) !important; cursor: default; }
.form-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.form-hint { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 20px; }
.form-hint code { background: var(--bg3); padding: 2px 6px; border-radius: 4px; font-size: 0.8rem; color: var(--text); }
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 20px; }
.form-page { display: flex; justify-content: center; padding: 40px 24px; }
.form-card { width: 100%; max-width: 560px; background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; }
.form-card h1 { margin-bottom: 20px; font-size: 1.4rem; }

/* ─── Dashboard ─────────────────────────────────────────────────────────────── */
.dashboard-page { max-width: 960px; margin: 0 auto; padding: 40px 24px; }
.dashboard-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.dashboard-header h1 { font-size: 1.6rem; }
.empty-state { text-align: center; padding: 60px 24px; background: var(--bg2); border: 1px dashed var(--border); border-radius: var(--radius); }
.empty-state h2 { margin-bottom: 8px; }
.empty-state p { color: var(--text-muted); margin-bottom: 20px; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.product-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.product-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.product-card-header h3 { font-size: 1rem; }
.release-count { font-size: 0.75rem; color: var(--text-muted); background: var(--bg3); padding: 2px 8px; border-radius: 20px; }
.product-desc { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 10px; line-height: 1.5; }
.product-url { margin-bottom: 14px; }
.product-url a { font-size: 0.8rem; color: var(--link); }
.product-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ─── Changelog page ────────────────────────────────────────────────────────── */
.changelog-page { max-width: 720px; margin: 0 auto; padding: 48px 24px; }
.changelog-header { margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }
.changelog-product h1 { font-size: 1.8rem; margin-bottom: 4px; }
.changelog-tagline { color: var(--text-muted); font-size: 0.95rem; }
.changelog-desc { color: var(--text-muted); margin-top: 8px; font-size: 0.9rem; }
.preview-badge { margin-top: 12px; background: var(--bg3); border: 1px solid var(--warning); border-radius: var(--radius); padding: 6px 12px; font-size: 0.8rem; color: var(--warning); display: inline-block; margin-bottom: 12px; }
.preview-badge a { color: var(--warning); }
.changelog-meta { margin-top: 12px; font-size: 0.8rem; color: var(--text-muted); display: flex; gap: 16px; }

.release { margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }
.release:last-child { border-bottom: none; }
.release-header { display: flex; align-items: baseline; gap: 12px; margin-bottom: 16px; }
.release-version { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.release-date { font-size: 0.85rem; color: var(--text-muted); }

.entry-group { margin-bottom: 12px; }
.entry-type-label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.entry-group-added .entry-type-label { color: var(--added); }
.entry-group-fixed .entry-type-label { color: var(--fixed); }
.entry-group-improved .entry-type-label { color: var(--improved); }
.entry-group-removed .entry-type-label { color: var(--removed); }

.entry-list { list-style: none; padding-left: 0; }
.entry { padding: 5px 0; font-size: 0.9rem; color: var(--text); }
.entry-added::before { content: "+ "; color: var(--added); font-weight: 700; }
.entry-fixed::before { content: "# "; color: var(--fixed); font-weight: 700; }
.entry-improved::before { content: "* "; color: var(--improved); font-weight: 700; }
.entry-removed::before { content: "- "; color: var(--removed); font-weight: 700; }

.empty-changelog { text-align: center; padding: 48px; background: var(--bg2); border: 1px dashed var(--border); border-radius: var(--radius); color: var(--text-muted); }

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
footer { text-align: center; padding: 24px; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.8rem; }

/* ─── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .hero h1 { font-size: 1.8rem; }
  .form-row { grid-template-columns: 1fr; }
  .plans { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .nav-links a:not(.btn-nav) { display: none; }
}