/* ============================================
   VELA — Global Design System
   ============================================ */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* === Design Tokens === */
:root {
  --color-brand-50:  #eef2ff;
  --color-brand-100: #e0e7ff;
  --color-brand-400: #818cf8;
  --color-brand-500: #6366f1;
  --color-brand-600: #4f46e5;
  --color-brand-700: #4338ca;

  --color-bg:           #0a0a0f;
  --color-surface:      #111118;
  --color-surface-2:    #16161f;
  --color-border:       #1e1e2e;
  --color-border-hover: #2e2e4e;
  --color-text:         #e2e8f0;
  --color-muted:        #64748b;
  --color-subtle:       #1e293b;

  --color-green: #22c55e;
  --color-amber: #f59e0b;
  --color-red:   #ef4444;
  --color-blue:  #38bdf8;

  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --shadow-card: 0 0 0 1px rgba(99,102,241,0.12), 0 4px 24px rgba(0,0,0,0.4);
  --shadow-card-hover: 0 0 0 1px rgba(99,102,241,0.4), 0 8px 32px rgba(99,102,241,0.1), 0 4px 24px rgba(0,0,0,0.4);
  --shadow-btn: 0 0 20px rgba(99,102,241,0.35);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, video { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }
code, pre { font-family: var(--font-mono); }

/* === Layout === */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
@media (min-width: 640px) { .container { padding: 0 2rem; } }
@media (min-width: 1024px) { .container { padding: 0 2.5rem; } }

/* === Background Patterns === */
.bg-grid {
  background-image:
    linear-gradient(rgba(99,102,241,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.bg-hero-glow {
  background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99,102,241,0.22), transparent);
}

.bg-section-glow {
  background-image: radial-gradient(ellipse 60% 40% at 50% 100%, rgba(99,102,241,0.08), transparent);
}

/* === Keyframes === */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideRight {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.5; }
  50%      { opacity: 1; }
}
@keyframes flowDash {
  to { stroke-dashoffset: -36; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position: 200% center; }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

/* === Scroll Animations === */
.anim-init {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}
.anim-init.in-view {
  opacity: 1;
  transform: translateY(0);
}
.anim-init.delay-1 { transition-delay: 0.1s; }
.anim-init.delay-2 { transition-delay: 0.18s; }
.anim-init.delay-3 { transition-delay: 0.26s; }
.anim-init.delay-4 { transition-delay: 0.34s; }
.anim-init.delay-5 { transition-delay: 0.42s; }
.anim-init.delay-6 { transition-delay: 0.50s; }

/* === Gradient Text === */
.text-gradient {
  background: linear-gradient(135deg, #fff 0%, #cbd5e1 55%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-gradient-brand {
  background: linear-gradient(135deg, var(--color-brand-400), var(--color-brand-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Card Styles === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.card-glow {
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.card-glow:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(99,102,241,0.3);
  transform: translateY(-2px);
}

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-full);
  padding: 0.2em 0.75em;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.badge-brand  { background: rgba(99,102,241,0.1); color: var(--color-brand-400); border: 1px solid rgba(99,102,241,0.2); }
.badge-green  { background: rgba(34,197,94,0.1);  color: #4ade80;                border: 1px solid rgba(34,197,94,0.2); }
.badge-amber  { background: rgba(245,158,11,0.1); color: #fbbf24;                border: 1px solid rgba(245,158,11,0.2); }
.badge-red    { background: rgba(239,68,68,0.1);  color: #f87171;                border: 1px solid rgba(239,68,68,0.2); }
.badge-muted  { background: rgba(100,116,139,0.1); color: var(--color-muted);    border: 1px solid var(--color-border); }
.badge-solid  { background: var(--color-brand-500); color: #fff; }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.15s ease;
  cursor: pointer;
  white-space: nowrap;
  border: none;
  outline: none;
}
.btn:focus-visible {
  outline: 2px solid var(--color-brand-500);
  outline-offset: 2px;
}
.btn-sm  { font-size: 0.8125rem; padding: 0.375rem 0.875rem; }
.btn-md  { font-size: 0.875rem;  padding: 0.5rem  1rem; }
.btn-lg  { font-size: 1rem;      padding: 0.75rem 1.5rem; }
.btn-xl  { font-size: 1.0625rem; padding: 0.875rem 2rem; }

.btn-primary {
  background: var(--color-brand-500);
  color: #fff;
  box-shadow: 0 4px 16px rgba(99,102,241,0.25);
}
.btn-primary:hover {
  background: var(--color-brand-600);
  box-shadow: var(--shadow-btn);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: rgba(99,102,241,0.4);
  background: var(--color-surface-2);
  transform: translateY(-1px);
}
.btn-ghost {
  color: var(--color-muted);
  background: transparent;
}
.btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

/* CTA variant overrides (controlled by tweaks) */
[data-cta="outline"] .btn-primary {
  background: transparent !important;
  border: 1.5px solid var(--color-brand-500) !important;
  color: var(--color-brand-400) !important;
  box-shadow: none !important;
}
[data-cta="outline"] .btn-primary:hover {
  background: rgba(99,102,241,0.08) !important;
  transform: translateY(-1px);
}
[data-cta="gradient"] .btn-primary {
  background: linear-gradient(135deg, var(--color-brand-400), var(--color-brand-700)) !important;
  box-shadow: 0 0 24px rgba(99,102,241,0.45) !important;
}

/* === Code Blocks === */
.code-panel {
  background: #0d0d14;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.7;
}
.code-panel-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: #0a0a11;
  border-bottom: 1px solid var(--color-border);
}
.code-dots { display: flex; gap: 6px; }
.code-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.code-dot-r { background: #ff5f57; }
.code-dot-y { background: #ffbd2e; }
.code-dot-g { background: #28c840; }
.code-filename {
  margin-left: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-muted);
  font-family: var(--font-mono);
}
.code-panel pre {
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0;
}
.code-panel code {
  font-size: 0.8125rem;
  line-height: 1.75;
}

/* Code tab bar */
.code-tabs {
  display: flex;
  gap: 0;
  background: #0a0a11;
  border-bottom: 1px solid var(--color-border);
}
.code-tab {
  padding: 0.6rem 1.25rem;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.code-tab:hover { color: var(--color-text); }
.code-tab.active {
  color: var(--color-brand-400);
  border-bottom-color: var(--color-brand-500);
}

/* Syntax highlight (manual tokens) */
.tok-kw    { color: #ff79c6; }
.tok-str   { color: #f1fa8c; }
.tok-fn    { color: #50fa7b; }
.tok-cls   { color: #8be9fd; }
.tok-cmt   { color: #6272a4; font-style: italic; }
.tok-num   { color: #bd93f9; }
.tok-op    { color: #ff79c6; }
.tok-flag  { color: #8be9fd; }
.tok-url   { color: #f1fa8c; }
.tok-key   { color: #8be9fd; }
.tok-val   { color: #f1fa8c; }
.tok-punct { color: #f8f8f2; opacity: 0.6; }
.tok-text  { color: #f8f8f2; }
.tok-out   { color: #50fa7b; opacity: 0.85; }

/* === Nav === */
.nav-blur {
  background: rgba(10,10,15,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

/* === Section headers === */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-400);
  margin-bottom: 1rem;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
}
.section-sub {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 52ch;
  text-wrap: pretty;
}

/* === Flow diagram === */
.flow-arrow {
  stroke: var(--color-border-hover);
  stroke-width: 1.5;
  stroke-dasharray: 8 5;
  fill: none;
  animation: flowDash 2.2s linear infinite;
}
.flow-node {
  fill: var(--color-surface);
  stroke: var(--color-border);
  stroke-width: 1;
}
.flow-node-brand {
  fill: rgba(99,102,241,0.08);
  stroke: rgba(99,102,241,0.4);
  stroke-width: 1;
}
.flow-text { fill: var(--color-text); font-family: var(--font-sans); }
.flow-text-muted { fill: var(--color-muted); font-family: var(--font-sans); }
.flow-text-brand { fill: var(--color-brand-400); font-family: var(--font-mono); }

/* === Divider === */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0;
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-border-hover); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-muted); }

/* === Prose (docs) === */
.prose { color: var(--color-text); }
.prose h1, .prose h2, .prose h3, .prose h4 { color: var(--color-text); font-weight: 700; margin: 1.5em 0 0.5em; }
.prose h1 { font-size: 1.875rem; }
.prose h2 { font-size: 1.375rem; border-bottom: 1px solid var(--color-border); padding-bottom: 0.4em; }
.prose h3 { font-size: 1.125rem; }
.prose p  { color: var(--color-muted); line-height: 1.8; margin: 0.75em 0; }
.prose code {
  font-family: var(--font-mono);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--color-brand-400);
}
.prose pre { margin: 1.25em 0; }
.prose pre code { background: none; border: none; padding: 0; color: inherit; font-size: 0.8125rem; }
.prose a { color: var(--color-brand-400); }
.prose a:hover { text-decoration: underline; }
.prose ul  { padding-left: 1.5em; list-style: disc; }
.prose ol  { padding-left: 1.5em; list-style: decimal; }
.prose li  { color: var(--color-muted); margin: 0.3em 0; }
.prose blockquote {
  border-left: 3px solid var(--color-brand-500);
  padding-left: 1em;
  margin: 1em 0;
  color: var(--color-muted);
  font-style: italic;
}
.prose table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.9rem; }
.prose th { padding: 0.5em 0.75em; text-align: left; border-bottom: 1px solid var(--color-border); color: var(--color-text); font-weight: 600; }
.prose td { padding: 0.5em 0.75em; border-bottom: 1px solid rgba(30,30,46,0.6); color: var(--color-muted); }
.prose tr:last-child td { border-bottom: none; }

/* Callouts */
.callout {
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  margin: 1.25rem 0;
  font-size: 0.9rem;
  line-height: 1.6;
}
.callout-note    { background: rgba(56,189,248,0.07); border: 1px solid rgba(56,189,248,0.18); color: #7dd3fc; }
.callout-warning { background: rgba(245,158,11,0.07); border: 1px solid rgba(245,158,11,0.18); color: #fbbf24; }
.callout-tip     { background: rgba(34,197,94,0.07);  border: 1px solid rgba(34,197,94,0.18);  color: #4ade80; }
.callout-danger  { background: rgba(239,68,68,0.07);  border: 1px solid rgba(239,68,68,0.18);  color: #f87171; }

/* === Docs sidebar === */
.docs-sidebar-link {
  display: block;
  padding: 0.3rem 0.75rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  transition: color 0.12s, background 0.12s;
}
.docs-sidebar-link:hover { color: var(--color-text); background: var(--color-surface); }
.docs-sidebar-link.active { color: var(--color-brand-400); background: rgba(99,102,241,0.08); font-weight: 500; }
.docs-sidebar-group { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text); padding: 0.75rem 0.75rem 0.35rem; }

/* === Responsive helpers === */
@media (max-width: 767px) {
  .hide-mobile { display: none !important; }
}
@media (min-width: 768px) {
  .hide-desktop { display: none !important; }
}

/* === Announcement pill === */
.announcement-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-brand-400);
  background: rgba(99,102,241,0.08);
  border: 1px solid rgba(99,102,241,0.25);
  border-radius: var(--radius-full);
  padding: 0.35rem 1rem 0.35rem 0.5rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.announcement-pill:hover {
  background: rgba(99,102,241,0.12);
  border-color: rgba(99,102,241,0.4);
}
.announcement-pill-badge {
  background: var(--color-brand-500);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.1em 0.5em;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

/* === Social proof logos === */
.logo-strip {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.logo-item {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-border-hover);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.15s;
}
.logo-item:hover { color: var(--color-muted); }

/* === Pricing cards === */
.pricing-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
}
.pricing-card.featured {
  border-color: rgba(99,102,241,0.5);
  box-shadow: 0 0 0 1px rgba(99,102,241,0.2), 0 8px 32px rgba(99,102,241,0.12);
  transform: scale(1.02);
}
.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-2px);
}
.pricing-check { color: var(--color-green); flex-shrink: 0; }

/* === Mobile menu overlay === */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,10,15,0.95);
  backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
}