/* ============================================
   valkey-lab — Product Page
   Adapted from Valkey-for-AI design system
   ============================================ */

:root {
  --bg:             #000;
  --bg-elevated:    #0a0a0a;
  --bg-card:        rgba(255,255,255,0.04);
  --bg-card-hover:  rgba(255,255,255,0.07);
  --border:         rgba(255,255,255,0.08);
  --border-hover:   rgba(255,255,255,0.15);
  --text-primary:   #f5f5f7;
  --text-secondary: rgba(245,245,247,0.6);
  --text-tertiary:  rgba(245,245,247,0.4);
  --accent:         #6366f1;
  --accent-light:   #818cf8;
  --gradient-1:     #6366f1;
  --gradient-2:     #a855f7;
  --gradient-3:     #ec4899;
  --green:          #4ade80;
  --red:            #f87171;
  --yellow:         #facc15;
  --cyan:           #22d3ee;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg:             #fafafa;
  --bg-elevated:    #f5f5f5;
  --bg-card:        rgba(0,0,0,0.03);
  --bg-card-hover:  rgba(0,0,0,0.06);
  --border:         rgba(0,0,0,0.08);
  --border-hover:   rgba(0,0,0,0.15);
  --text-primary:   #1d1d1f;
  --text-secondary: rgba(29,29,31,0.6);
  --text-tertiary:  rgba(29,29,31,0.4);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

/* ---- Layout ---- */
.container { max-width: 1000px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }

/* ---- Animations ---- */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.7; }
}
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ---- Nav ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 0 24px;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(0,0,0,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] .nav.scrolled {
  background: rgba(250,250,250,0.8);
}
.nav-inner {
  max-width: 1000px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-family: var(--mono); font-size: 15px; font-weight: 600;
  color: var(--text-primary); letter-spacing: -0.02em;
}
.nav-logo .accent { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 13px; font-weight: 500; color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }
.nav-github {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 7px 16px; border-radius: 100px; font-size: 13px;
  transition: all var(--transition);
}
.nav-github:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
#theme-toggle {
  background: none; border: 1px solid var(--border); color: var(--text-secondary);
  cursor: pointer; padding: 5px 10px; border-radius: 100px; font-size: 14px;
  transition: all var(--transition);
}
#theme-toggle:hover { border-color: var(--border-hover); color: var(--text-primary); }

/* ---- Install pill ---- */
.install-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 14px 8px 18px;
  margin-bottom: 20px;
  transition: all var(--transition);
}
.install-pill:hover {
  border-color: var(--border-hover);
}
.install-pill code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}
.install-pill .cmd   { color: var(--cyan); }
.install-pill .flag  { color: var(--accent-light); }
.install-pill .value { color: var(--green); }
.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 2px;
  transition: color var(--transition);
}
.copy-btn:hover {
  color: var(--text-primary);
}
.copy-btn.copied {
  color: var(--green);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex; align-items: center; justify-content: center;
  padding: 120px 24px 40px;
  text-align: center;
  overflow: hidden;
}
.hero-gradient {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99,102,241,0.25), transparent),
    radial-gradient(ellipse 60% 40% at 70% 60%, rgba(168,85,247,0.12), transparent);
  animation: pulse 8s ease-in-out infinite;
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 100px; font-size: 12px; font-weight: 500;
  color: var(--text-secondary); letter-spacing: 0.02em; margin-bottom: 28px;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
}
.gradient-text {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2), var(--gradient-3));
  background-size: 200% 200%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 6s ease-in-out infinite;
}
.hero-subtitle {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 560px; margin: 0 auto 36px;
  line-height: 1.65; font-weight: 400;
}
.hero-actions {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; flex-wrap: wrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 26px; border-radius: 100px; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; letter-spacing: -0.01em;
  transition: all var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  color: white;
  box-shadow: 0 0 20px rgba(99,102,241,0.3);
}
.btn-primary:hover { box-shadow: 0 0 30px rgba(99,102,241,0.45); }
.btn-secondary {
  background: var(--bg-card); color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--border-hover); }

/* ---- Section headings ---- */
.section-tag {
  display: inline-block; font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-light); margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px); font-weight: 800;
  letter-spacing: -0.03em; line-height: 1.15; margin-bottom: 16px;
}
.section-subtitle {
  color: var(--text-secondary); max-width: 600px;
  font-size: 16px; line-height: 1.7;
}

/* ---- Writeup / prose ---- */
.prose { max-width: 640px; }
.prose p {
  color: var(--text-secondary); font-size: 16px; line-height: 1.75;
  margin-bottom: 1.25rem;
}
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text-primary); font-weight: 600; }
.prose code {
  font-family: var(--mono); font-size: 0.88em;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 4px;
}

/* ---- Bento cards ---- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 2rem;
}
.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition);
}
.bento-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.bento-card h3 {
  font-family: var(--font-display);
  font-size: 16px; font-weight: 600; margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.bento-card p {
  color: var(--text-secondary); font-size: 14px; line-height: 1.6;
}

/* ---- Timeline steps ---- */
.step-timeline {
  position: relative;
  padding-left: 36px;
  margin-top: 24px;
}
.step-timeline::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gradient-1), var(--gradient-2));
  border-radius: 1px;
}
.step-item {
  position: relative;
  padding: 0 0 28px 24px;
}
.step-item:last-child { padding-bottom: 0; }
.step-item::before {
  content: attr(data-step);
  position: absolute;
  left: -28px;
  top: 2px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-1), var(--gradient-2));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  z-index: 1;
}
.step-item h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}
.step-item p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* ---- Scenario picker cards ---- */
.scenario-card {
  cursor: pointer;
  user-select: none;
  padding: 16px 20px;
}
.scenario-card h3 { font-size: 14px; margin-bottom: 4px; }
.scenario-card p { font-size: 13px; }
.scenario-card.active {
  border-color: var(--accent);
  background: rgba(99,102,241,0.08);
}
.scenario-card.active h3 { color: var(--accent-light); }

/* ---- Terminal window ---- */
.terminal {
  background: #0a0a0a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.6);
}
[data-theme="light"] .terminal {
  background: #1a1a1a;
  border-color: #333;
}
.terminal-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.terminal-dot { width: 11px; height: 11px; border-radius: 50%; }
.terminal-dot.r { background: #ff5f57; }
.terminal-dot.y { background: #ffbd2e; }
.terminal-dot.g { background: #28c840; }
.terminal-title {
  margin-left: 10px; font-family: var(--mono);
  font-size: 12px; color: rgba(255,255,255,0.35); font-weight: 500;
}
.terminal-body {
  padding: 14px 20px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.3;
  color: #d4d4d4;
  overflow-x: auto;
  white-space: pre;
  min-height: 40px;
}

/* Terminal color classes — exact match to clean.rs ANSI codes:
   \x1b[36m = CYAN   \x1b[2m = DIM   \x1b[1m = BOLD
   \x1b[32m = GREEN  \x1b[31m = RED   \x1b[33m = YELLOW */
.t-cyan   { color: #22d3ee; }
.t-dim    { color: rgba(255,255,255,0.3); }
.t-bold   { font-weight: 700; color: #f5f5f7; }
.t-green  { color: #4ade80; font-weight: 700; }
.t-red    { color: #f87171; font-weight: 700; }
.t-yellow { color: #facc15; font-weight: 700; }

/* Animated terminal lines */
.terminal-body .line {
  display: block;
  opacity: 0;
}
.terminal-body .line:empty {
  min-height: 0.5em;
}
.terminal-body .line.visible { opacity: 1; }

@keyframes typeLine {
  from { opacity: 0; transform: translateY(2px); }
  to   { opacity: 1; transform: translateY(0); }
}

.terminal-cursor::after {
  content: '\2588';
  animation: blink 1s step-end infinite;
  color: rgba(255,255,255,0.25);
}
@keyframes blink { 50% { opacity: 0; } }

/* ---- Comparison table ---- */
.table-wrapper {
  overflow-x: auto; margin-top: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.table-wrapper table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-wrapper th {
  text-align: left; padding: 12px 16px;
  background: rgba(255,255,255,0.02); font-weight: 600; font-size: 13px;
  border-bottom: 1px solid var(--border); color: var(--text-secondary);
}
.table-wrapper td {
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.table-wrapper tr:last-child td { border-bottom: none; }
.check { color: var(--green); font-weight: 700; }
.cross { color: var(--text-tertiary); }

/* ---- Code block ---- */
.code-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto; margin-top: 1.25rem;
}
.code-block pre {
  margin: 0; padding: 16px 20px;
  font-family: var(--mono); font-size: 13px;
  line-height: 1.7; color: var(--text-primary);
}
.code-block .comment { color: var(--text-tertiary); }
.code-block .cmd     { color: var(--cyan); }
.code-block .flag    { color: var(--accent-light); }
.code-block .value   { color: var(--green); }

/* ---- Divider ---- */
.divider { height: 1px; background: var(--border); }

/* ---- CTA ---- */
.cta-section { text-align: center; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 1.5rem; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0; text-align: center;
  color: var(--text-tertiary); font-size: 13px;
}
footer a { color: var(--text-tertiary); transition: color var(--transition); }
footer a:hover { color: var(--accent-light); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .nav-links a:not(.nav-github):not(#theme-toggle) { display: none; }
  .install-pill code { font-size: 11px; }
  .bento-grid { grid-template-columns: 1fr; }
  .terminal-body { font-size: 11px; padding: 14px 16px; }
  .hero { min-height: 60vh; padding-top: 100px; }
}
@media (max-width: 480px) {
  .bento-grid { gap: 12px; }
  .terminal-body { font-size: 10px; }
}