/* ==========================================================================
   QR FORGE — styles.css
   Vanilla CSS3. Dual theme engine, RTL-safe (logical properties only),
   fluid typography, zero layout shift, AA/AAA contrast in both themes.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Brand ramp — overridable live by the admin dashboard */
  --accent:        #6366f1;
  --grad-a:        #818cf8;
  --grad-b:        #a78bfa;
  --grad-c:        #22d3ee;

  /* Dark theme (default) */
  --bg:            #0b0f19;
  --bg-deep:       #070a12;
  --surface:       #131b2e;
  --surface-2:     #18223a;
  --surface-3:     #1f2b47;
  --border:        #1e293b;
  --border-strong: #334155;
  --text:          #f1f5f9;
  --text-2:        #cbd5e1;
  --text-muted:    #a3b2ca;
  --accent-text:   #a5b4fc;
  --accent-soft:   rgba(99, 102, 241, .16);
  --ok:            #34d399;
  --ok-soft:       rgba(52, 211, 153, .14);
  --warn:          #fbbf24;
  --warn-soft:     rgba(251, 191, 36, .14);
  --danger:        #fda4af;
  --danger-soft:   rgba(244, 63, 94, .16);

  --btn-grad:      linear-gradient(120deg, #4f46e5 0%, #6d28d9 55%, #7c3aed 100%);
  --btn-grad-text: #ffffff;
  --head-grad:     linear-gradient(100deg, var(--grad-a) 0%, var(--grad-b) 45%, var(--grad-c) 100%);
  --glass:         rgba(11, 15, 25, .72);
  --shadow-sm:     0 1px 2px rgba(0, 0, 0, .4);
  --shadow:        0 10px 30px -12px rgba(0, 0, 0, .7);
  --shadow-lg:     0 28px 60px -24px rgba(0, 0, 0, .8);
  --ring:          #93c5fd;

  /* Geometry */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --pill: 999px;

  /* Fluid type scale */
  --fs-xs:  clamp(.75rem,  .72rem + .12vw, .82rem);
  --fs-sm:  clamp(.84rem,  .81rem + .15vw, .93rem);
  --fs-base:clamp(.95rem,  .92rem + .2vw,  1.06rem);
  --fs-md:  clamp(1.05rem, 1rem + .3vw,    1.2rem);
  --fs-lg:  clamp(1.2rem,  1.1rem + .5vw,  1.5rem);
  --fs-xl:  clamp(1.5rem,  1.3rem + 1vw,   2.1rem);
  --fs-2xl: clamp(1.9rem,  1.5rem + 2vw,   3rem);
  --fs-3xl: clamp(2.3rem,  1.7rem + 3.4vw, 4.1rem);

  --wrap: 1240px;
  --nav-h: 68px;

  --ease: cubic-bezier(.22, .7, .25, 1);
  --t-fast: 140ms var(--ease);
  --t:      240ms var(--ease);

  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
          "Noto Sans", "Noto Sans Arabic", "Noto Nastaliq Urdu",
          "Noto Sans Devanagari", "Noto Sans SC", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;

  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg:            #f8fafc;
  --bg-deep:       #eef2f7;
  --surface:       #ffffff;
  --surface-2:     #f4f7fb;
  --surface-3:     #e9eef6;
  --border:        #e2e8f0;
  --border-strong: #c2cddc;
  --text:          #0f172a;
  --text-2:        #1e293b;
  --text-muted:    #475569;
  --accent:        #4f46e5;
  --accent-text:   #4338ca;
  --accent-soft:   rgba(79, 70, 229, .1);
  --ok:            #047857;
  --ok-soft:       rgba(4, 120, 87, .1);
  --warn:          #92400e;
  --warn-soft:     rgba(146, 64, 14, .1);
  --danger:        #b91c1c;
  --danger-soft:   rgba(185, 28, 28, .09);

  --grad-a:        #4338ca;
  --grad-b:        #7c3aed;
  --grad-c:        #0e7490;
  --head-grad:     linear-gradient(100deg, var(--grad-a) 0%, var(--grad-b) 45%, var(--grad-c) 100%);
  --glass:         rgba(248, 250, 252, .78);
  --shadow-sm:     0 1px 2px rgba(15, 23, 42, .07);
  --shadow:        0 10px 30px -14px rgba(15, 23, 42, .22);
  --shadow-lg:     0 28px 60px -26px rgba(15, 23, 42, .28);
  --ring:          #1d4ed8;

  color-scheme: light;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

/* Several components set an explicit `display`, which would otherwise win over
   the user-agent rule for [hidden]. Keep the attribute authoritative. */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-block-start: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: var(--fs-base);
  line-height: 1.68;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60rem 36rem at 12% -8%, var(--accent-soft), transparent 70%),
    radial-gradient(48rem 32rem at 92% 4%, rgba(34, 211, 238, .1), transparent 70%);
}

h1, h2, h3, h4 { line-height: 1.22; margin: 0 0 .6em; font-weight: 750; letter-spacing: -.02em; }
p  { margin: 0 0 1.05em; }
ul, ol { margin: 0; padding: 0; }
img, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }

a { color: var(--accent-text); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--text); }

code {
  font-family: var(--mono);
  font-size: .9em;
  padding: .12em .42em;
  border-radius: 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--accent-text);
  overflow-wrap: anywhere;
}

:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  inset-block-start: -100px;
  inset-inline-start: 12px;
  z-index: 200;
  padding: 12px 20px;
  border-radius: var(--r);
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  transition: inset-block-start var(--t);
}
.skip-link:focus { inset-block-start: 12px; color: #fff; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}
.wrap.narrow { max-width: 920px; }

.section { padding-block: clamp(56px, 8vw, 104px); }
.section-alt { background: var(--bg-deep); border-block: 1px solid var(--border); }
.page-top { padding-block-start: clamp(88px, 10vw, 128px); }

.section-head { max-width: 760px; margin-inline: auto; text-align: center; margin-block-end: clamp(32px, 5vw, 56px); }
.section-title { font-size: var(--fs-2xl); margin-block-end: .5em; }
.section-lede { font-size: var(--fs-md); color: var(--text-muted); margin: 0; }

.grad-text { color: var(--accent-text); }

/* Clip the gradient to the glyphs only where the browser supports it, so the
   heading can never render as invisible transparent text. */
@supports ((background-clip: text) or (-webkit-background-clip: text)) {
  .grad-text {
    background: var(--head-grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
  }
}

.mini-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-md);
  margin-block-end: 1rem;
}
.mini-title svg { color: var(--accent-text); flex: none; }

/* --------------------------------------------------------------------------
   3. NAVBAR
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 90;
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-block-end: 1px solid var(--border);
  transition: box-shadow var(--t), background var(--t);
}
.site-header.is-stuck { box-shadow: var(--shadow); }

.nav {
  max-width: var(--wrap);
  margin-inline: auto;
  min-height: var(--nav-h);
  padding-inline: clamp(16px, 4vw, 32px);
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--text);
  flex: none;
}
.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  color: #fff;
  background: var(--btn-grad);
  box-shadow: 0 6px 18px -6px var(--accent);
}
.brand-pulse {
  position: absolute;
  inset-block-start: -2px; inset-inline-end: -2px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px var(--bg);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1);   opacity: 1; }
  50%      { transform: scale(1.4); opacity: .55; }
}
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-text strong { font-size: 1.06rem; letter-spacing: -.03em; }
.brand-text small { font-size: .68rem; color: var(--text-muted); letter-spacing: .06em; text-transform: uppercase; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin-inline-start: auto;
}
.nav-links a {
  display: block;
  padding: 9px 13px;
  border-radius: var(--pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--text-2);
  text-decoration: none;
  transition: color var(--t-fast), background var(--t-fast);
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }

.nav-actions { display: flex; align-items: center; gap: 8px; flex: none; }

.lang-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-inline: 10px 6px;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  background: var(--surface);
}
.lang-icon { color: var(--text-muted); flex: none; }
.lang-select {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  padding-block: 8px;
  padding-inline: 0 20px;
  cursor: pointer;
}
.lang-select option { background: var(--surface); color: var(--text); }
.lang-wrap .sel-chevron { position: absolute; inset-inline-end: 8px; pointer-events: none; color: var(--text-muted); }

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--pill);
  padding: 4px;
  cursor: pointer;
  flex: none;
  transition: border-color var(--t-fast);
}
.theme-toggle:hover { border-color: var(--border-strong); }
.tt-track { display: block; position: relative; width: 56px; height: 28px; }
.tt-thumb {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--btn-grad);
  transition: transform var(--t);
  will-change: transform;
}
.tt-ico { position: absolute; transition: opacity var(--t), transform var(--t); }
.tt-sun  { opacity: 0; transform: rotate(-90deg) scale(.4); }
.tt-moon { opacity: 1; transform: rotate(0) scale(1); }
:root[data-theme="light"] .tt-thumb { transform: translateX(28px); }
:root[dir="rtl"][data-theme="light"] .tt-thumb { transform: translateX(-28px); }
:root[data-theme="light"] .tt-sun  { opacity: 1; transform: rotate(0) scale(1); }
:root[data-theme="light"] .tt-moon { opacity: 0; transform: rotate(90deg) scale(.4); }

.menu-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  place-items: center;
}
.bars { display: grid; gap: 5px; width: 20px; }
.bars span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform var(--t), opacity var(--t-fast);
}
.menu-toggle[aria-expanded="true"] .bars span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .bars span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface);
  color: var(--text-2);
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }

/* Mobile drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 95;
  background: rgba(2, 6, 15, .62);
  backdrop-filter: blur(3px);
  animation: fade var(--t) both;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.mobile-drawer {
  position: fixed;
  inset-block: 0;
  inset-inline-end: 0;
  z-index: 96;
  width: min(330px, 86vw);
  padding: 18px;
  background: var(--surface);
  border-inline-start: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
  animation: slide-in var(--t) both;
}
@keyframes slide-in { from { transform: translateX(100%); } to { transform: translateX(0); } }
:root[dir="rtl"] .mobile-drawer { animation-name: slide-in-rtl; }
@keyframes slide-in-rtl { from { transform: translateX(-100%); } to { transform: translateX(0); } }

.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-block-end: 14px; }
.drawer-title { font-weight: 750; font-size: var(--fs-md); }
.drawer-links { list-style: none; display: grid; gap: 2px; }
.drawer-links a {
  display: block;
  padding: 13px 14px;
  border-radius: var(--r);
  font-weight: 650;
  color: var(--text-2);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}
.drawer-links a:hover { background: var(--surface-2); color: var(--text); }

/* --------------------------------------------------------------------------
   4. BUTTONS & FORM CONTROLS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--r);
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--t-fast), box-shadow var(--t-fast),
              background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
}
.btn svg { flex: none; }
.btn:active { transform: translateY(1px); }
.btn-lg { padding: 15px 28px; font-size: var(--fs-base); border-radius: var(--r-lg); }
.btn-sm { padding: 8px 13px; font-size: var(--fs-xs); border-radius: var(--r-sm); }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--btn-grad);
  color: var(--btn-grad-text);
  box-shadow: 0 10px 26px -14px var(--accent);
}
.btn-primary:hover { color: #fff; box-shadow: 0 16px 34px -14px var(--accent); transform: translateY(-1px); }

.btn-solid {
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text);
}
.btn-solid:hover { background: var(--surface-3); border-color: var(--border-strong); color: var(--text); }

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: clamp(18px, 2.6vw, 28px);
  box-shadow: var(--shadow-sm);
}

.field { margin-block-end: 18px; border: 0; padding: 0; min-width: 0; }
.field:last-child { margin-block-end: 0; }
.field > label, .field > legend {
  display: block;
  margin-block-end: 7px;
  font-size: var(--fs-sm);
  font-weight: 650;
  color: var(--text);
}
.field output { font-variant-numeric: tabular-nums; color: var(--accent-text); font-weight: 750; }

input[type="text"], input[type="email"], input[type="tel"],
input[type="password"], input[type="url"], textarea, select {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  font-size: var(--fs-sm);
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
}
textarea { resize: vertical; min-height: 92px; line-height: 1.6; }
input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: .85; }

input:hover, textarea:hover, select:hover { border-color: var(--border-strong); }
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input:focus-visible, textarea:focus-visible, select:focus-visible { outline: 3px solid var(--ring); outline-offset: 1px; }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }

select { appearance: none; cursor: pointer; padding-inline-end: 38px; }
select option { background: var(--surface); color: var(--text); }
.select-wrap { position: relative; }
.select-wrap .sel-chevron {
  position: absolute;
  inset-inline-end: 13px;
  inset-block-start: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-muted);
}

.grid-2 { display: grid; gap: 0 16px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

.combo {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--surface-2);
  overflow: hidden;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.combo:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.combo > * { border: 0 !important; border-radius: 0 !important; background: transparent !important; box-shadow: none !important; }
.combo-select { flex: none; width: auto; min-width: 92px; font-weight: 650; color: var(--accent-text) !important; border-inline-end: 1px solid var(--border) !important; }
.combo-input { flex: 1 1 auto; min-width: 0; }
.combo-btn { width: 46px; height: auto; flex: none; border-inline-start: 1px solid var(--border) !important; }

.help { margin: 7px 0 0; font-size: var(--fs-xs); color: var(--text-muted); line-height: 1.55; }
.help code { font-size: .92em; }
.counter { font-variant-numeric: tabular-nums; }
.err { margin: 7px 0 0; font-size: var(--fs-xs); font-weight: 650; color: var(--danger); }

.check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-block: 12px;
  font-size: var(--fs-sm);
  color: var(--text-2);
  cursor: pointer;
}
.check input[type="checkbox"] {
  flex: none;
  width: 20px; height: 20px;
  margin: 1px 0 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { position: relative; }
.pill input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.pill span {
  display: block;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  background: var(--surface-2);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-2);
  transition: all var(--t-fast);
}
.pill:hover span { border-color: var(--border-strong); color: var(--text); }
.pill input:checked + span {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-text);
}
.pill input:focus-visible + span { outline: 3px solid var(--ring); outline-offset: 2px; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 26px;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: var(--pill);
  background: var(--surface-3);
  border: 1px solid var(--border);
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px; height: 20px;
  margin-block-start: -8px;
  border-radius: 50%;
  background: var(--btn-grad);
  border: 2px solid var(--surface);
  box-shadow: var(--shadow-sm);
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: var(--pill);
  background: var(--surface-3);
  border: 1px solid var(--border);
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--surface);
}

.color-row { display: flex; align-items: center; gap: 10px; }
input[type="color"] {
  flex: none;
  inline-size: 52px;
  block-size: 44px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch { border: 0; border-radius: 5px; }
.hex-input {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.file-drop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 16px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--r);
  background: var(--surface-2);
  font-size: var(--fs-sm);
  font-weight: 650;
  color: var(--text-2);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), color var(--t-fast);
}
.file-drop:hover { border-color: var(--accent); color: var(--text); background: var(--accent-soft); }
.file-drop svg { flex: none; color: var(--accent-text); }

/* The real <input type="file"> is visually hidden, so mirror its focus ring
   onto the label the user actually sees. */
.field:has(> input[type="file"]:focus-visible) .file-drop,
.admin-actions:has(> .btn-row > input[type="file"]:focus-visible) label[for="adm-import"] {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
  border-color: var(--accent);
}

.thumb-row { display: flex; align-items: center; gap: 12px; margin-block-start: 12px; }
.thumb-row img {
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   5. HERO
   -------------------------------------------------------------------------- */
.hero { position: relative; padding-block: clamp(56px, 9vw, 112px) clamp(40px, 6vw, 72px); overflow: hidden; }
.hero-glow {
  position: absolute;
  inset-block-start: -36%;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  width: min(1100px, 130vw);
  aspect-ratio: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 42% 44%, var(--accent-soft), transparent 58%),
    radial-gradient(circle at 62% 56%, rgba(34, 211, 238, .13), transparent 56%);
  animation: drift 18s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translateX(-50%) scale(1)    rotate(0deg); }
  to   { transform: translateX(-50%) scale(1.12) rotate(8deg); }
}

.hero-inner { position: relative; text-align: center; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  padding: 8px 17px;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  background: var(--surface);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
}
.hero-eyebrow svg { color: var(--ok); flex: none; }

.hero-title { font-size: var(--fs-3xl); font-weight: 800; max-width: 17ch; margin-inline: auto; margin-block-end: .55em; }
.hero-sub { font-size: var(--fs-md); color: var(--text-2); max-width: 66ch; margin-inline: auto; margin-block-end: 2em; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-block-end: 2.6em; }

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  list-style: none;
}
.trust-badges li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: var(--pill);
  background: var(--surface);
  font-size: var(--fs-xs);
  font-weight: 650;
  color: var(--text-2);
  transition: transform var(--t-fast), border-color var(--t-fast);
}
.trust-badges li:hover { transform: translateY(-2px); border-color: var(--accent); }
.trust-badges svg { color: var(--ok); flex: none; }

/* --------------------------------------------------------------------------
   6. STUDIO (generator)
   -------------------------------------------------------------------------- */
.studio {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  align-items: start;
}
.studio-main { min-width: 0; }
.studio-side { display: grid; gap: 22px; min-width: 0; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  margin-block-end: 24px;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--surface-2);
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 1 1 auto;
  justify-content: center;
  padding: 11px 13px;
  border: 1px solid transparent;
  border-radius: var(--r);
  background: transparent;
  font: inherit;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--t-fast);
}
.tab svg { flex: none; }
.tab:hover { color: var(--text); background: var(--surface-3); }
.tab.is-active {
  color: var(--btn-grad-text);
  background: var(--btn-grad);
  border-color: transparent;
  box-shadow: 0 6px 16px -10px var(--accent);
}

.panel { animation: panel-in var(--t) both; }
.panel[hidden] { display: none; }
@keyframes panel-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.preset-grid {
  display: grid;
  gap: 9px;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  margin-block: 16px 20px;
}
.preset {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 7px;
  padding: 13px 8px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--surface-2);
  font-size: var(--fs-xs);
  font-weight: 650;
  color: var(--text-2);
  text-align: center;
  cursor: pointer;
  transition: all var(--t-fast);
}
.preset input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.preset svg { width: 26px; height: 26px; }
.preset:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.preset.is-on { border-color: var(--accent); background: var(--accent-soft); color: var(--text); box-shadow: 0 0 0 1px var(--accent) inset; }
.preset input:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: var(--r); }

.social-fields { border-block-start: 1px solid var(--border); padding-block-start: 20px; }

.logo-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  margin-block-end: 18px;
}
.logo-opt {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--surface-2);
  cursor: pointer;
  transition: all var(--t-fast);
}
.logo-opt input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.logo-opt svg { width: 26px; height: 26px; }
.logo-opt .logo-none { font-size: var(--fs-xs); font-weight: 700; color: var(--text-muted); }
.logo-opt:hover { border-color: var(--border-strong); }
.logo-opt.is-on { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 1px var(--accent) inset; }
.logo-opt input:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: var(--r); }

/* Preview */
.preview-card { position: sticky; inset-block-start: calc(var(--nav-h) + 16px); }

.canvas-frame {
  position: relative;
  display: grid;
  place-items: center;
  padding: clamp(14px, 2.4vw, 24px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background:
    repeating-conic-gradient(var(--surface-3) 0% 25%, var(--surface-2) 0% 50%) 0 0 / 22px 22px;
  aspect-ratio: 1;
  contain: layout paint;
}
#qr-canvas {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 6px;
  image-rendering: pixelated;
  animation: pop var(--t) both;
}
@keyframes pop { from { opacity: 0; transform: scale(.97); } to { opacity: 1; transform: none; } }

.qr-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(84px, 1fr));
  gap: 8px;
  margin: 16px 0;
}
.qr-meta > div {
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  text-align: center;
}
.qr-meta dt { font-size: .66rem; font-weight: 750; letter-spacing: .07em; text-transform: uppercase; color: var(--text-muted); }
.qr-meta dd { margin: 3px 0 0; font-size: var(--fs-sm); font-weight: 750; color: var(--text); font-variant-numeric: tabular-nums; }

.export-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 9px; }

.contrast-note {
  margin: 0 0 14px;
  padding: 10px 13px;
  border-radius: var(--r-sm);
  font-size: var(--fs-xs);
  font-weight: 650;
  border: 1px solid transparent;
  line-height: 1.5;
}
.contrast-note.is-ok   { background: var(--ok-soft);     border-color: var(--ok);     color: var(--ok); }
.contrast-note.is-warn { background: var(--warn-soft);   border-color: var(--warn);   color: var(--warn); }
.contrast-note.is-bad  { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.contrast-note:empty { display: none; }

/* --------------------------------------------------------------------------
   7. FEATURES
   -------------------------------------------------------------------------- */
.feature-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); }
.feature { transition: transform var(--t), border-color var(--t), box-shadow var(--t); }
.feature:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.feature h3 { font-size: var(--fs-md); margin-block-end: .5em; }
.feature p { margin: 0; font-size: var(--fs-sm); color: var(--text-muted); }
.feat-ico {
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  margin-block-end: 16px;
  border-radius: 13px;
  color: #fff;
  background: var(--btn-grad);
  box-shadow: 0 8px 20px -12px var(--accent);
}

/* --------------------------------------------------------------------------
   8. PROSE / LONG-FORM CONTENT
   -------------------------------------------------------------------------- */
.prose { max-width: 76ch; margin-inline: auto; }
.prose h2, .prose h3 { font-size: var(--fs-lg); margin-block: 1.9em .6em; }
.prose h2:first-child, .prose h3:first-child { margin-block-start: 0; }
.prose p { color: var(--text-2); }
.prose strong { color: var(--text); font-weight: 750; }
.prose em { color: var(--text); }

.h3-indigo  { color: var(--accent-text); }
/* Contrast-corrected variant written by the palette builder; the raw gradient
   stop is only the pre-JS fallback. */
.h3-cyan    { color: var(--grad-c-text, var(--grad-c)); }
.h3-emerald { color: var(--ok); }
.h3-violet  { color: var(--grad-b); }
.h3-amber   { color: var(--warn); }

.prose.callout {
  padding: clamp(20px, 3vw, 34px);
  border: 1px solid var(--border);
  border-inline-start: 4px solid var(--ok);
  border-radius: var(--r-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.page-title { font-size: var(--fs-2xl); margin-block-end: .35em; }
.page-meta { font-size: var(--fs-sm); color: var(--text-muted); margin-block-end: 1.6em; }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin-block-end: 16px;
  font-size: var(--fs-xs);
  font-weight: 650;
  color: var(--text-muted);
}
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

.legal-notice {
  padding: 12px 16px;
  margin-block-end: 2em;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface-2);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* Accordion */
.accordion { display: grid; gap: 10px; }
.acc-item {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--surface);
  overflow: hidden;
  transition: border-color var(--t-fast);
}
.acc-item:has(.acc-btn[aria-expanded="true"]) { border-color: var(--accent); }
.acc-item h3 { margin: 0; font-size: 1rem; }
.acc-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px clamp(16px, 2.4vw, 24px);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--text);
  text-align: start;
  cursor: pointer;
  transition: background var(--t-fast);
}
.acc-btn:hover { background: var(--surface-2); }
.acc-chev { flex: none; color: var(--accent-text); transition: transform var(--t); }
.acc-btn[aria-expanded="true"] .acc-chev { transform: rotate(180deg); }
.acc-body { padding: 0 clamp(16px, 2.4vw, 24px) 20px; animation: acc var(--t) both; }
.acc-body[hidden] { display: none; }
.acc-body p { margin: 0; font-size: var(--fs-sm); color: var(--text-2); }
@keyframes acc { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

.contact-form { margin-block-start: clamp(28px, 4vw, 44px); }

/* --------------------------------------------------------------------------
   9. ADMIN
   -------------------------------------------------------------------------- */
.admin-grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); align-items: start; }
.admin-actions { grid-column: 1 / -1; }

/* --------------------------------------------------------------------------
   10. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  margin-block-start: clamp(40px, 6vw, 80px);
  padding-block-start: clamp(44px, 6vw, 72px);
  background: var(--bg-deep);
  border-block-start: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  grid-template-columns: minmax(240px, 1.6fr) repeat(3, minmax(150px, 1fr));
  padding-block-end: clamp(32px, 4vw, 48px);
}
.foot-brand .brand { margin-block-end: 16px; }
.foot-brand p { font-size: var(--fs-sm); color: var(--text-muted); max-width: 46ch; }
.foot-owner { font-weight: 700; color: var(--text-2) !important; font-size: var(--fs-sm); }
.foot-title { font-size: var(--fs-sm); font-weight: 750; letter-spacing: .07em; text-transform: uppercase; color: var(--text); margin-block-end: 14px; }
.foot-col ul { list-style: none; display: grid; gap: 9px; }
.foot-col ul a { font-size: var(--fs-sm); color: var(--text-muted); text-decoration: none; transition: color var(--t-fast); }
.foot-col ul a:hover { color: var(--accent-text); text-decoration: underline; }
.foot-note { font-size: var(--fs-xs); color: var(--text-muted); margin-block-start: 16px; }

.social-row { display: flex !important; flex-wrap: wrap; gap: 9px; }
.social-row a {
  display: grid;
  place-items: center;
  width: 42px; height: 42px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text-2);
  transition: transform var(--t), color var(--t-fast), border-color var(--t-fast), box-shadow var(--t);
}
.social-row a:hover {
  transform: translateY(-4px) scale(1.06);
  color: var(--accent-text);
  border-color: var(--accent);
  box-shadow: 0 10px 22px -12px var(--accent);
}
.social-row svg { width: 20px; height: 20px; }

.foot-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: center;
  justify-content: space-between;
  padding-block: 20px;
  border-block-start: 1px solid var(--border);
}
.foot-bottom p { margin: 0; font-size: var(--fs-xs); color: var(--text-muted); }
.foot-built { font-family: var(--mono); letter-spacing: -.01em; }

/* --------------------------------------------------------------------------
   11. UTILITIES: back-to-top, toasts, noscript
   -------------------------------------------------------------------------- */
.to-top {
  position: fixed;
  inset-block-end: 22px;
  inset-inline-end: 22px;
  z-index: 80;
  display: grid;
  place-items: center;
  width: 50px; height: 50px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow);
  animation: pop var(--t) both;
  transition: transform var(--t), color var(--t-fast), border-color var(--t-fast);
}
.to-top:hover { transform: translateY(-4px); color: var(--accent-text); border-color: var(--accent); }

.toast-stack {
  position: fixed;
  inset-block-end: 22px;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  z-index: 120;
  display: grid;
  gap: 10px;
  width: min(420px, calc(100vw - 32px));
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 17px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm);
  font-weight: 650;
  color: var(--text);
  pointer-events: auto;
  animation: toast-in var(--t) both;
}
.toast.is-out { animation: toast-out 220ms var(--ease) both; }
.toast svg { flex: none; width: 20px; height: 20px; }
.toast.ok   { border-inline-start: 4px solid var(--ok); }
.toast.ok svg { color: var(--ok); }
.toast.err  { border-inline-start: 4px solid var(--danger); }
.toast.err svg { color: var(--danger); }
.toast.info { border-inline-start: 4px solid var(--accent); }
.toast.info svg { color: var(--accent-text); }
@keyframes toast-in  { from { opacity: 0; transform: translateY(18px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to   { opacity: 0; transform: translateY(12px) scale(.97); } }

.noscript {
  max-width: 760px;
  margin: 28px auto;
  padding: 20px 24px;
  border: 1px solid var(--warn);
  border-radius: var(--r-lg);
  background: var(--warn-soft);
  color: var(--text);
}

.view[hidden] { display: none; }

/* --------------------------------------------------------------------------
   12. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .studio { grid-template-columns: 1fr; }
  .preview-card { position: static; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 920px) {
  .nav-links { display: none; }
  .menu-toggle { display: grid; }
  .brand-text small { display: none; }
}

@media (max-width: 640px) {
  :root { --nav-h: 62px; }
  .lang-select { max-width: 86px; }
  .brand-mark { width: 36px; height: 36px; }
  .tabs { gap: 4px; padding: 5px; }
  .tab { flex: 1 1 calc(33.333% - 4px); padding: 10px 6px; }
  .tab span { font-size: .7rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .foot-bottom { justify-content: flex-start; }
  .export-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-cta .btn { flex: 1 1 100%; }
}

@media (max-width: 420px) {
  .lang-wrap { padding-inline: 8px 4px; }
  .lang-select { max-width: 62px; }
  .preset-grid { grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); }
}

/* --------------------------------------------------------------------------
   13. RTL REFINEMENTS
   -------------------------------------------------------------------------- */
:root[dir="rtl"] .acc-btn,
:root[dir="rtl"] .drawer-links a { text-align: right; }
:root[dir="rtl"] .foot-built { direction: ltr; }
:root[dir="rtl"] code,
:root[dir="rtl"] .hex-input,
:root[dir="rtl"] input[type="url"],
:root[dir="rtl"] input[type="email"],
:root[dir="rtl"] input[type="tel"] { direction: ltr; text-align: start; }
:root[dir="rtl"] .combo-select { direction: ltr; }
:root[dir="rtl"] .toast-stack { transform: translateX(50%); }

/* Arabic and Urdu need far more leading than Latin: the tight heading metrics
   clip tanwin, hamza and Nastaliq descenders otherwise. */
:root[lang="ar"] body { line-height: 1.9; }
:root[lang="ur"] body { line-height: 2.05; }

:root[lang="ar"] h1, :root[lang="ar"] h2, :root[lang="ar"] h3,
:root[lang="ar"] .hero-title, :root[lang="ar"] .section-title, :root[lang="ar"] .page-title {
  line-height: 1.6;
}
:root[lang="ur"] h1, :root[lang="ur"] h2, :root[lang="ur"] h3,
:root[lang="ur"] .hero-title, :root[lang="ur"] .section-title, :root[lang="ur"] .page-title {
  line-height: 1.85;
}

/* Gradient-clipped text has no glyph overflow allowance, so give it room. */
:root[lang="ar"] .grad-text, :root[lang="ur"] .grad-text { padding-block: .12em; }

/* `ch` units are calibrated for Latin "0"; let these scripts use more width. */
:root[lang="ar"] .hero-title, :root[lang="ur"] .hero-title,
:root[lang="hi"] .hero-title, :root[lang="zh"] .hero-title { max-width: 24ch; }

/* --------------------------------------------------------------------------
   14. PREFERENCES: reduced motion, high contrast, print
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: more) {
  :root { --border: #475569; --border-strong: #94a3b8; --text-muted: #cbd5e1; }
  :root[data-theme="light"] { --border: #94a3b8; --border-strong: #475569; --text-muted: #334155; }
  .btn, .card, input, textarea, select { border-width: 2px; }
}

@media print {
  .site-header, .site-footer, .to-top, .toast-stack, .mobile-drawer,
  .drawer-overlay, .hero, .tabs, .studio-main, .export-grid,
  .section-alt, #features, #how-to-use, #faq, .qr-meta { display: none !important; }
  body { background: #fff; color: #000; }
  body::before { display: none; }
  .card { border: 0; box-shadow: none; padding: 0; }
  .canvas-frame { background: #fff; border: 0; aspect-ratio: auto; }
  #qr-canvas { width: 92mm; height: 92mm; }
}