/* ═══════════════════════════════════════════════════════════════
   castly.css — Castly shared design tokens + base styles
   Extracted VERBATIM from the design mockups (Design:Front end/Archive).
   Contains ONLY what 3+ mockups share. Page-specific styles stay
   inline per page. See docs/frontend/DESIGN-SYSTEM.md for the map.
   NOTE: html { font-size } is per-page (site 18px, auth 17px,
   app pages browser default) — set it in the page, not here.
   ═══════════════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS (union of all mockup :root blocks; values identical everywhere) ── */
:root {
  --bg-root:    #12141f;
  --bg-panel:   #1a1d2e;
  --bg-surface: #21253a;
  --bg-line:    #2e3350;
  --text-primary: #e8eaf2;
  --text-muted:   #8a90ad;
  --text-faint:   #555c7a;
  --accent-from: #e8633a;
  --accent-to:   #f0784f;
  --accent-mid:  #ec6e42;
  --accent-glow: rgba(232, 99, 58, 0.18);
  --accent-soft: rgba(232, 99, 58, 0.10);
  --magenta: #b33d8e;
  --gradient-brand: linear-gradient(135deg, #e8633a 0%, #b33d8e 100%);
  --success: #4cc38a;
  --success-soft: rgba(76, 195, 138, 0.12);
  --warning: #e7b549;
  --warning-soft: rgba(231, 181, 73, 0.12);
  --error:   #e55c5c;
  --error-soft: rgba(229, 92, 92, 0.10);
  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  16px;
  --r-xl:  24px;
  --r-pill: 999px;
  --s-1:  4px;  --s-2:  8px;  --s-3:  12px; --s-4:  16px;
  --s-5:  24px; --s-6:  32px; --s-7:  48px; --s-8:  64px;
  --s-9:  96px; --s-10: 128px;
  --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;
  --t-fast:  120ms ease-out;
  --t-mid:   200ms ease-out;
  --t-enter: 500ms cubic-bezier(.16,1,.3,1);
  /* code colors (compiler workspace syntax highlighting) */
  --c-tag:#e8633a; --c-attr:#7cc3ff; --c-str:#b9a0e0; --c-cmt:#5a6178; --c-kw:#ec6e42; --c-num:#4cc38a;
}

/* ── RESET (shared across every mockup) ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg-root); color: var(--text-primary); font-family: var(--font-display); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
ul, ol { list-style: none; }
:focus-visible { outline: 2px solid var(--accent-to); outline-offset: 3px; border-radius: var(--r-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ── LAYOUT HELPERS ── */
.container { width: 100%; max-width: 1280px; margin-inline: auto; padding-inline: var(--s-8); }
@media (max-width: 1024px) { .container { padding-inline: var(--s-6); } }
@media (max-width: 767px)  { .container { padding-inline: var(--s-4); } }
@media (max-width: 374px)  { .container { padding-inline: var(--s-3); } }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
/* focusable sr-only elements (skip links) become visible when keyboard-focused */
a.sr-only:focus, a.sr-only:focus-visible { position: fixed; left: 16px; top: 12px; z-index: 300; width: auto; height: auto; overflow: visible; clip: auto; white-space: normal; background: var(--bg-panel); color: var(--text-primary); padding: 10px 16px; border-radius: var(--r-md); border: 1px solid var(--accent-to); font-size: 0.85rem; font-weight: 600; }
.text-center { text-align: center; }

/* ── SCROLL REVEAL (site pages) ── */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(24px); transition: opacity var(--t-enter), transform var(--t-enter); }
  .reveal.visible { opacity: 1; transform: translateY(0); }
  .reveal-delay-1 { transition-delay: 80ms; }
  .reveal-delay-2 { transition-delay: 160ms; }
  .reveal-delay-3 { transition-delay: 240ms; }
  .reveal-delay-4 { transition-delay: 320ms; }
  .reveal-delay-5 { transition-delay: 400ms; }
}

/* ── SITE NAV (all marketing pages) ── */
.nav { position: sticky; top: 0; z-index: 100; background: rgba(18,20,31,0.85); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--bg-line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav__logo { display: flex; align-items: center; gap: var(--s-3); font-weight: 700; font-size: 1rem; letter-spacing: -0.01em; }
.nav__mark { width: 36px; height: 36px; border-radius: var(--r-md); background: var(--gradient-brand); display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-weight: 700; font-size: 0.72rem; color: #fff; letter-spacing: -0.03em; flex-shrink: 0; }
.nav__links { display: flex; align-items: center; gap: var(--s-5); }
.nav__links a { font-size: 0.88rem; font-weight: 500; color: var(--text-muted); transition: color var(--t-fast); }
.nav__links a:hover, .nav__links a.active { color: var(--text-primary); }
.nav__links a.active { color: var(--accent-to); }
.nav__cta { display: inline-flex; align-items: center; height: 36px; padding-inline: var(--s-4); border-radius: var(--r-pill); background: var(--gradient-brand); color: #fff; font-size: 0.83rem; font-weight: 600; transition: opacity var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast); }
.nav__cta:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(232,99,58,0.35); }
.nav__cta:active { transform: translateY(0); }
@media (max-width: 767px) { .nav__links { display: none; } .nav__cta { display: none; } }

/* ── MOBILE BURGER MENU (built by /assets/nav.js) ── */
.nav__burger { display: none; width: 42px; height: 42px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border: 1px solid var(--bg-line); border-radius: var(--r-md); background: var(--bg-panel); cursor: pointer; padding: 0; }
.nav__burger span { display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--text-primary); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease; }
.nav__burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0.4); }
.nav__burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav__menu { display: none; }
@media (max-width: 767px) {
  .nav__burger { display: flex; }
  .nav__menu { display: block; position: absolute; top: 100%; left: 0; right: 0; z-index: 99; background: rgba(18, 20, 31, 0.98); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid var(--bg-line); box-shadow: 0 28px 56px rgba(0, 0, 0, 0.5); max-height: 0; overflow: hidden; transition: max-height 0.38s cubic-bezier(0.4, 0, 0.2, 1); }
  .nav__menu.open { max-height: 480px; }
  .nav__menu-links { display: flex; flex-direction: column; padding: var(--s-3) var(--s-5) 0; }
  .nav__menu-links a { display: block; padding: 14px 4px; font-size: 1.05rem; font-weight: 600; color: var(--text-primary); border-bottom: 1px solid var(--bg-line); opacity: 0; transform: translateY(10px); transition: opacity 0.32s ease, transform 0.32s ease; }
  .nav__menu-links a.active { color: var(--accent-to); }
  .nav__menu.open .nav__menu-links a { opacity: 1; transform: none; }
  .nav__menu.open .nav__menu-links a:nth-child(1) { transition-delay: 0.05s; }
  .nav__menu.open .nav__menu-links a:nth-child(2) { transition-delay: 0.1s; }
  .nav__menu.open .nav__menu-links a:nth-child(3) { transition-delay: 0.15s; }
  .nav__menu.open .nav__menu-links a:nth-child(4) { transition-delay: 0.2s; }
  .nav__menu.open .nav__menu-links a:nth-child(5) { transition-delay: 0.25s; }
  .nav__menu-cta { display: flex; align-items: center; justify-content: center; height: 46px; margin: var(--s-4) var(--s-5) var(--s-5); border-radius: var(--r-pill); background: var(--gradient-brand); color: #fff; font-size: 0.95rem; font-weight: 700; opacity: 0; transform: translateY(10px); transition: opacity 0.32s ease 0.3s, transform 0.32s ease 0.3s; }
  .nav__menu.open .nav__menu-cta { opacity: 1; transform: none; }
}

/* ── BUTTONS (site pages: hero/CTA/404/success) ── */
.btn-primary { display: inline-flex; align-items: center; gap: var(--s-2); height: 52px; padding-inline: var(--s-7); border-radius: var(--r-md); background: var(--gradient-brand); color: #fff; font-size: 1rem; font-weight: 700; letter-spacing: 0.01em; transition: transform var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast); box-shadow: 0 4px 20px rgba(232,99,58,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(232,99,58,0.48); opacity: 0.95; }
.btn-primary:active { transform: translateY(0); }
.btn-secondary { display: inline-flex; align-items: center; gap: var(--s-2); height: 52px; padding-inline: var(--s-7); border-radius: var(--r-md); background: transparent; border: 1.5px solid var(--bg-line); color: var(--text-muted); font-size: 1rem; font-weight: 600; transition: border-color var(--t-fast), color var(--t-fast), transform var(--t-fast); }
.btn-secondary:hover { border-color: var(--text-muted); color: var(--text-primary); transform: translateY(-1px); }

/* ── SECTION HEADER (site pages) ── */
.section-header { text-align: center; margin-bottom: var(--s-8); }
.section-eyebrow { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent-to); margin-bottom: var(--s-3); }
.section-title { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 800; letter-spacing: -0.025em; line-height: 1.1; margin-bottom: var(--s-4); }
.section-sub { font-size: 1rem; color: var(--text-muted); max-width: 50ch; margin-inline: auto; line-height: 1.6; }

/* ── HERO BADGE (site pages) ── */
.hero__badge { display: inline-flex; align-items: center; gap: var(--s-2); height: 28px; padding-inline: var(--s-3); border-radius: var(--r-pill); background: var(--accent-soft); border: 1px solid rgba(232,99,58,0.25); font-size: 0.77rem; font-weight: 600; color: var(--accent-to); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: var(--s-5); }
.hero__badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent-to); }
@media (prefers-reduced-motion: no-preference) {
  .hero__badge-dot { animation: pulse-dot 2.4s ease-in-out infinite; }
  @keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.75)} }
}

/* ── FOOTER (site pages) ── */
.footer { border-top: 1px solid var(--bg-line); padding-block: var(--s-9) var(--s-7); }
.footer__top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--s-8); margin-bottom: var(--s-8); }
@media (max-width: 767px) { .footer__top { grid-template-columns: 1fr 1fr; gap: var(--s-6); } }
@media (max-width: 400px) { .footer__top { grid-template-columns: 1fr; } }
.footer__brand p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; margin-top: var(--s-3); max-width: 30ch; }
.footer__col-title { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-faint); margin-bottom: var(--s-4); }
.footer__links { display: flex; flex-direction: column; gap: var(--s-3); }
.footer__links a { font-size: 0.87rem; color: var(--text-muted); transition: color var(--t-fast); }
.footer__links a:hover { color: var(--text-primary); }
.footer__bottom { display: flex; align-items: center; justify-content: space-between; padding-top: var(--s-6); border-top: 1px solid var(--bg-line); gap: var(--s-4); flex-wrap: wrap; }
.footer__copy { font-size: 0.8rem; color: var(--text-faint); }
.footer__bottom-links { display: flex; gap: var(--s-4); }
.footer__bottom-links a { font-size: 0.8rem; color: var(--text-faint); transition: color var(--t-fast); }
.footer__bottom-links a:hover { color: var(--text-muted); }

/* Chrome/Safari AUTOFILL paints inputs WHITE on our dark theme — force the dark skin.
   The huge inset shadow overrides the UA's opaque background; the absurd transition
   delay defeats the UA's background-color animation on keystrokes. */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
textarea:-webkit-autofill,
select:-webkit-autofill {
  -webkit-box-shadow: 0 0 0 1000px var(--bg-root) inset !important;
  box-shadow: 0 0 0 1000px var(--bg-root) inset !important;
  -webkit-text-fill-color: var(--text-primary) !important;
  caret-color: var(--text-primary);
  transition: background-color 9999999s ease-in-out 0s;
}

/* Footer rows for features that are not live yet: visible but honestly grayed */
.footer__soon { color: var(--text-faint); cursor: default; }
.footer__soon em { font-style: normal; font-size: 0.68rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-faint); opacity: 0.8; margin-left: 6px; }

/* ── STICKY MOBILE CTA (site pages) ── */
.sticky-mobile-cta { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 200; background: rgba(18,20,31,0.95); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-top: 1px solid var(--bg-line); padding: var(--s-3) var(--s-4); padding-bottom: calc(var(--s-3) + env(safe-area-inset-bottom, 0px)); }
@media (max-width: 767px) { .sticky-mobile-cta { display: block; } body { padding-bottom: 76px; } }
.sticky-mobile-cta__btn { display: flex; align-items: center; justify-content: center; width: 100%; height: 48px; border-radius: var(--r-md); background: var(--gradient-brand); color: #fff; font-size: 1rem; font-weight: 700; transition: opacity var(--t-fast); }
.sticky-mobile-cta__btn:active { opacity: 0.85; }

/* ── APP LEFT RAIL (compiler / dashboard / account)
   Positioning is per-page: dashboard+account add
   `position:sticky;top:0;height:100vh;`, the compiler adds
   `grid-row:1 / span 3;` in their own inline styles.        ── */
.rail{background:var(--bg-panel);border-right:1px solid var(--bg-line);display:flex;flex-direction:column;align-items:center;padding:14px 0;gap:6px;}
.rail-logo{margin-bottom:14px;}
.rail-btn{width:40px;height:40px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;color:var(--text-faint);transition:color var(--t-fast),background var(--t-fast);position:relative;}
.rail-btn:hover{color:var(--text-primary);background:var(--bg-surface);}
.rail-btn.active{color:#fff;background:var(--accent-soft);}
.rail-btn.active::before{content:'';position:absolute;left:-14px;top:9px;width:3px;height:22px;border-radius:var(--r-pill);background:var(--gradient-brand);}
.rail-spacer{margin-top:auto;}
.rail-avatar{width:34px;height:34px;border-radius:var(--r-pill);background:var(--gradient-brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:0.8rem;color:#fff;}