/**
 * styles.css — QR Studio shared baseline
 * Provides: CSS tokens, reset, lang-bar, toast, animations
 * promo.html carries its own full inlined styles on top of this.
 */

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:       #080B14;
  --s1:       #111827;
  --s2:       #161F30;
  --s3:       #1C2840;
  --border:   rgba(255,255,255,0.07);
  --bhi:      rgba(255,255,255,0.13);
  --bp:       rgba(124,58,237,0.5);

  --purple:   #7C3AED;
  --purpleL:  #A78BFA;
  --purpleD:  #5B21B6;
  --pdim:     rgba(124,58,237,0.15);

  --amber:    #F59E0B;
  --amberL:   #FCD34D;
  --adim:     rgba(245,158,11,0.15);

  --white:    #F9FAFB;
  --t2:       #CBD5E1;
  --tmuted:   #64748B;
  --tdim:     #2D3A52;

  --green:    #10B981;
  --red:      #EF4444;

  --r24:      24px;
  --r16:      16px;
  --r12:      12px;
  --rfull:    9999px;

  --tr:       0.2s cubic-bezier(0.4,0,0.2,1);
  --ease:     cubic-bezier(0.4,0,0.2,1);

  --fd:       'Syne', 'Plus Jakarta Sans', sans-serif;
  --fb:       'DM Sans', sans-serif;
}
html[lang="ar"] { --fd: 'Cairo', sans-serif; --fb: 'Cairo', sans-serif; }

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--fb);
  font-weight: 400;
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Language bar ───────────────────────────────────────── */
.lang-bar {
  position: fixed; top: 22px; right: 22px; z-index: 500;
  display: flex; align-items: center;
  background: rgba(17,24,39,0.88);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--rfull);
  padding: 4px; gap: 2px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.5);
}
html[dir="rtl"] .lang-bar { right: auto; left: 22px; }

.lang-btn {
  background: none; border: 1px solid transparent;
  border-radius: var(--rfull);
  color: var(--tmuted);
  cursor: pointer; font-family: 'DM Sans', sans-serif;
  font-size: .74rem; font-weight: 700; letter-spacing: .09em;
  padding: 7px 16px; transition: all var(--tr);
}
.lang-btn:hover { color: var(--white); }
.lang-btn.active { background: var(--pdim); border-color: var(--bp); color: var(--purpleL); }

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--s2);
  border: 1px solid var(--bp);
  border-radius: var(--rfull);
  color: var(--purpleL);
  font-size: .85rem; font-weight: 600;
  padding: 12px 28px; opacity: 0;
  pointer-events: none; transition: all .3s ease;
  z-index: 9999; white-space: nowrap;
  box-shadow: 0 8px 32px rgba(124,58,237,0.25);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Keyframes ──────────────────────────────────────────── */
@keyframes fadeUp   { from{opacity:0;transform:translateY(22px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeDown { from{opacity:0;transform:translateY(-16px)} to{opacity:1;transform:translateY(0)} }
@keyframes scaleIn  { from{opacity:0;transform:scale(.94)} to{opacity:1;transform:scale(1)} }
@keyframes blink    { 0%,100%{opacity:1} 50%{opacity:.2} }
@keyframes spin     { to{transform:rotate(360deg)} }
@keyframes pulse    { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.4;transform:scale(.7)} }
@keyframes gradShift{ 0%{background-position:0% 50%} 50%{background-position:100% 50%} 100%{background-position:0% 50%} }
@keyframes orbFloat { 0%,100%{transform:translateX(-50%) scale(1)} 50%{transform:translateX(-50%) scale(1.07)} }
@keyframes langFade { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:translateY(0)} }

.lang-fade { animation: langFade .28s ease both; }
.hidden    { display: none !important; }

/* ── Mobile lang-bar adjust ─────────────────────────────── */
@media (max-width: 640px) {
  .lang-bar { top: 16px; right: 16px; }
  html[dir="rtl"] .lang-bar { right: auto; left: 16px; }
}