/* ═══════════════════════════════════════════════════════════════════════════
   PAP Docs — Shared Design System
   All common tokens, reset, nav, buttons, footer, utilities.
   Page-specific styles live in each page's own CSS file.
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Design tokens ──────────────────────────────────────────────────────── */
:root {
  /* Palette — dark (default) */
  --bg:        #0c0b14;
  --surface:   #151420;
  --surface2:  #1f1e2e;
  --border:    #2c2b40;
  --border2:   #353455;
  --indigo:    #6c5ce7;
  --violet:    #8b7ff5;
  --teal:      #2ec4a0;
  --amber:     #f0a030;
  --coral:     #e8706a;
  --red:       #e8706a;
  --text:      #eeeef2;
  --muted:     #9494a8;
  --faint:     #6a6a80;
  /* Sizing */
  --radius:    8px;
  --radius-lg: 12px;
  /* Fonts */
  --font-display: 'Satoshi', -apple-system, sans-serif;
  --font-body:    'DM Sans', -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', monospace;
  scroll-behavior: smooth;
}

/* ─── Light mode ─────────────────────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --bg:       #faf9fc;
    --surface:  #f0eff5;
    --surface2: #e6e5ee;
    --border:   #d0cfdc;
    --border2:  #bbb9cc;
    --text:     #1a1928;
    --muted:    #5c5b70;
    --faint:    #8888a0;
  }
}

/* ─── Forced color-scheme toggle via [data-theme] ───────────────────────── */
[data-theme="light"] {
  --bg:       #faf9fc;
  --surface:  #f0eff5;
  --surface2: #e6e5ee;
  --border:   #d0cfdc;
  --border2:  #bbb9cc;
  --text:     #1a1928;
  --muted:    #5c5b70;
  --faint:    #8888a0;
}
[data-theme="dark"] {
  --bg:       #0c0b14;
  --surface:  #151420;
  --surface2: #1f1e2e;
  --border:   #2c2b40;
  --border2:  #353455;
  --text:     #eeeef2;
  --muted:    #9494a8;
  --faint:    #6a6a80;
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(108,92,231,.35); }
a { color: var(--indigo); text-decoration: none; }
a:hover { color: var(--violet); }
img { max-width: 100%; }

/* ─── Utility ────────────────────────────────────────────────────────────── */
.container    { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container-md { max-width: 800px;  margin: 0 auto; padding: 0 24px; }
.section      { padding: 96px 0; }
.section-sm   { padding: 56px 0; }
.divider      { height: 1px; background: var(--border); }

.gradient-text {
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gh-icon { width: 18px; height: 18px; fill: currentColor; }

/* ─── Navigation ─────────────────────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(12,11,20,.85); /* dark mode default */
  backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid var(--border);
}
[data-theme="light"] nav {
  background: rgba(250,249,252,.9);
}
@media (prefers-color-scheme: light) {
  html:not([data-theme]) nav {
    background: rgba(250,249,252,.9);
  }
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--text);
}
.nav-logo img { height: 32px; width: auto; }
.nav-wordmark {
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
  letter-spacing: -.02em;
}
.nav-links {
  display: flex; align-items: center; gap: 8px; list-style: none;
}
.nav-links a {
  color: var(--muted); font-size: .9rem; font-weight: 500;
  padding: 6px 12px; border-radius: var(--radius);
  transition: all .15s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(128,128,128,.08); }
.nav-links a[aria-current="page"] { color: var(--text); }
.nav-link-icon {
  font-family: var(--font-mono);
  font-size: .65rem; font-weight: 700;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-link-icon-img {
  width: 18px; height: 18px; object-fit: contain; vertical-align: middle;
}
.nav-cta { display: flex; align-items: center; gap: 10px; }

/* Theme toggle button */
.nav-theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--radius);
  background: transparent; border: 1px solid var(--border2);
  color: var(--muted); cursor: pointer;
  transition: all .15s ease;
  flex-shrink: 0;
}
.nav-theme-toggle:hover { border-color: var(--indigo); color: var(--indigo); }
.nav-theme-toggle svg { width: 16px; height: 16px; fill: currentColor; }
/* Show the right icon depending on current theme */
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }
@media (prefers-color-scheme: light) {
  html:not([data-theme]) .icon-sun  { display: block; }
  html:not([data-theme]) .icon-moon { display: none; }
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius);
  font-size: .9rem; font-weight: 600;
  transition: all .15s ease; cursor: pointer; border: none;
  font-family: var(--font-body); text-decoration: none;
}
.btn-primary {
  background: var(--indigo); color: #fff;
}
.btn-primary:hover {
  background: #5b4bd6; color: #fff; transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(108,92,231,.35);
}
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border2);
}
.btn-outline:hover {
  border-color: var(--indigo); color: var(--indigo); transform: translateY(-1px);
}
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-work-with-us {
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  color: #fff; font-size: .85rem; padding: 8px 18px;
}
.btn-work-with-us:hover {
  color: #fff; transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(108,92,231,.4);
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  font-size: .8rem; color: var(--faint);
}
.footer-wordmark {
  font-family: var(--font-display); font-weight: 700; font-size: 1rem;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--faint); transition: color .15s; font-size: .85rem; }
.footer-links a:hover { color: var(--muted); }
.footer-copy {
  font-family: var(--font-mono); font-size: .8rem; color: var(--faint);
}

/* ─── Reveal animations ──────────────────────────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(20px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }
.reveal-delay-5 { transition-delay: .5s; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .footer-inner { flex-direction: column; gap: 12px; text-align: center; }
}