/* SPDX-License-Identifier: Apache-2.0
   Copyright 2026 Seth Morrow
   Part of xtQRdecoder, an xTalk port of the ZXing QR decoder.
   ZXing is Apache-2.0; see the NOTICE file for full attribution.
   =====================================================================
   qr_demo.css -- styling for the interactive scanner page (qr_demo.lc).

   Mobile-first and progressively enhanced. Without JavaScript the form shows
   every input stacked in one column and the result is server-rendered above it.
   The html.js rules (the class is added by qr_demo.js) upgrade this into a
   tabbed scanner that, on wide screens, becomes a two-pane workspace: a sticky
   input card on the left and a live results column on the right. */

:root {
  /* surfaces */
  --bg: #0a0d15;
  --bg-2: #0e1220;
  --card: #131826;
  --card-2: #161c2c;
  --line: #222a3c;
  --line-2: #2d3853;
  /* ink */
  --text: #eaeef8;
  --muted: #97a3bd;
  --faint: #69748b;
  /* brand */
  --accent: #6ea8fe;
  --accent-hi: #8fc0ff;
  --accent-lo: #4f8af0;
  --accent-2: #8b7bff;
  /* status */
  --ok: #54e08c;
  --ok-bg: #0d2a20;
  --ok-line: #1d6048;
  --bad: #ff8f8f;
  --bad-bg: #2f161b;
  --bad-line: #6a2026;
  /* shape */
  --radius: 18px;
  --radius-sm: 12px;
  --radius-xs: 9px;
  --shadow: 0 22px 48px -28px rgba(0, 0, 0, .85);
  --shadow-sm: 0 8px 22px -16px rgba(0, 0, 0, .7);
  --ring: 0 0 0 3px rgba(110, 168, 254, .42);
}

* { box-sizing: border-box; }
html, body { margin: 0; }

body {
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 12% -10%, rgba(110, 168, 254, .14), transparent 62%),
    radial-gradient(1000px 560px at 100% -4%, rgba(139, 123, 255, .12), transparent 56%),
    var(--bg);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 760px; margin: 0 auto; padding: 30px 18px 60px; }

/* ===== hero ============================================================== */
.hero { display: flex; align-items: center; gap: 15px; margin: 4px 0 24px; }
.logo {
  flex: 0 0 auto; width: 50px; height: 50px; display: grid; place-items: center;
  color: var(--accent);
  background: linear-gradient(155deg, rgba(110, 168, 254, .22), rgba(139, 123, 255, .14));
  border: 1px solid var(--line-2); border-radius: 15px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .07), var(--shadow-sm);
}
.logo svg { width: 30px; height: 30px; }
.hero-text { min-width: 0; }
h1 {
  font-size: 27px; line-height: 1.08; margin: 0 0 4px; letter-spacing: -.022em; font-weight: 800;
  background: linear-gradient(96deg, #fff 10%, #aecaf6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.tagline { color: var(--muted); margin: 0; font-size: 14.5px; max-width: 56ch; }
.hero-badges {
  list-style: none; display: flex; flex-wrap: wrap; gap: 7px;
  margin: 11px 0 0; padding: 0;
}
.hero-badges li {
  font-size: 12px; font-weight: 600; color: var(--muted);
  background: rgba(0, 0, 0, .2); border: 1px solid var(--line);
  padding: 4px 11px; border-radius: 999px;
}

/* ===== layout ============================================================ */
.app { animation: rise .42s ease both; }

/* ===== cards ============================================================= */
.card {
  background: linear-gradient(180deg, var(--card), var(--card-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin: 16px 0; box-shadow: var(--shadow);
}
.card.sub { background: var(--bg-2); box-shadow: none; }

/* ===== tabs (JS only) ==================================================== */
.tabs { display: none; }
html.js .tabs {
  display: flex; gap: 4px; padding: 5px; margin: 0 0 18px;
  background: rgba(0, 0, 0, .22); border: 1px solid var(--line); border-radius: 13px;
}
.tab {
  flex: 1; appearance: none; border: 0; cursor: pointer;
  background: transparent; color: var(--muted);
  font: inherit; font-weight: 600; font-size: 14px;
  padding: 9px 10px; border-radius: 9px;
  transition: background .18s, color .18s, box-shadow .18s;
}
.tab:hover { color: var(--text); }
.tab.is-active {
  background: linear-gradient(180deg, var(--accent), var(--accent-lo)); color: #08102a;
  box-shadow: 0 8px 18px -10px var(--accent); font-weight: 700;
}
.tab:focus-visible { outline: none; box-shadow: var(--ring); }

/* ===== panels =========================================================== */
.panel { margin: 0 0 4px; }
.panel + .panel { margin-top: 18px; }
html.js .panel { display: none; margin: 0; }
html.js .panel.is-active { display: block; animation: fade .25s ease both; }

/* ===== dropzone ========================================================= */
.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 9px; text-align: center; cursor: pointer;
  padding: 34px 18px; min-height: 176px;
  border: 1.5px dashed var(--line-2); border-radius: var(--radius-sm);
  background:
    radial-gradient(120% 100% at 50% 0%, rgba(110, 168, 254, .06), transparent 70%),
    var(--bg-2);
  color: var(--muted);
  transition: border-color .2s, background .2s, transform .12s, box-shadow .2s;
}
.dropzone:hover { border-color: var(--accent); color: var(--text); }
.dropzone.dragging {
  border-color: var(--accent); color: var(--text);
  background: rgba(110, 168, 254, .12); transform: scale(1.01);
  box-shadow: var(--ring);
}
.dz-icon {
  width: 46px; height: 46px; color: var(--accent); margin-bottom: 2px;
  padding: 10px; border-radius: 14px;
  background: rgba(110, 168, 254, .12); border: 1px solid var(--line-2);
}
.dz-title { font-weight: 650; color: var(--text); font-size: 15px; }
.dz-hint { font-size: 12.5px; color: var(--faint); }

/* visually-hidden but focusable */
.vh {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.dropzone:focus-within { border-color: var(--accent); box-shadow: var(--ring); }

/* ===== labels, inputs, file picker ====================================== */
.flbl { display: block; font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 7px; }
.hint { font-size: 12.5px; color: var(--faint); margin: 9px 0 0; }
.filepick { display: block; margin-top: 16px; }
.filepick + .cam-live { margin-top: 0; }

input[type=file] {
  display: block; width: 100%; font: inherit; color: var(--muted);
  padding: 12px; background: var(--bg-2);
  border: 1px dashed var(--line-2); border-radius: var(--radius-sm);
}
input[type=file]::file-selector-button {
  font: inherit; font-weight: 600; cursor: pointer; margin-right: 12px;
  color: var(--text); background: #1d2436; border: 1px solid var(--line-2);
  padding: 8px 14px; border-radius: 8px; transition: background .15s;
}
input[type=file]::file-selector-button:hover { background: #243049; }

input[type=url], input[type=text] {
  display: block; width: 100%; font: inherit; color: var(--text);
  padding: 13px 15px; background: var(--bg-2);
  border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s;
}
input[type=url]::placeholder, input[type=text]::placeholder { color: var(--faint); }
input[type=url]:focus, input[type=text]:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }

/* ===== camera =========================================================== */
.cam-live { margin-bottom: 16px; }
.cam-stage {
  position: relative; border-radius: var(--radius-sm); overflow: hidden;
  background: #05070d; border: 1px solid var(--line); aspect-ratio: 4 / 3;
}
.cam-video { width: 100%; height: 100%; object-fit: cover; display: block; }
.cam-reticle {
  position: absolute; inset: 18%; border: 2px solid rgba(255, 255, 255, .85);
  border-radius: 14px; box-shadow: 0 0 0 100vmax rgba(0, 0, 0, .28);
  pointer-events: none;
}
.cam-controls { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }

/* ===== toggles ========================================================== */
.options { display: grid; gap: 10px; margin: 18px 0 4px; }
@media (min-width: 520px) { .options { grid-template-columns: 1fr 1fr; } }
.switch {
  display: flex; align-items: flex-start; gap: 11px; cursor: pointer;
  padding: 12px 14px; background: var(--bg-2);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color .15s, background .15s;
}
.switch:hover { border-color: var(--line-2); background: var(--card); }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.track {
  flex: 0 0 auto; position: relative; width: 38px; height: 22px; margin-top: 1px;
  background: #2a3146; border-radius: 999px; transition: background .2s;
}
.track::after {
  content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px;
  background: #cdd6f4; border-radius: 50%; transition: transform .2s, background .2s;
}
.switch input:checked + .track { background: linear-gradient(180deg, var(--accent), var(--accent-lo)); }
.switch input:checked + .track::after { transform: translateX(16px); background: #fff; }
.switch input:focus-visible + .track { box-shadow: var(--ring); }
.swtext { font-size: 14px; color: var(--text); font-weight: 600; line-height: 1.3; }
.swtext em { display: block; font-style: normal; font-weight: 400; font-size: 12px; color: var(--faint); margin-top: 3px; }

/* ===== preview ========================================================== */
.preview-wrap { position: relative; width: max-content; max-width: 100%; margin: 16px 0 2px; }
.preview {
  display: block; max-width: 220px; max-height: 220px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: #fff; padding: 6px;
}
.preview-clear {
  position: absolute; top: -10px; right: -10px; width: 28px; height: 28px;
  display: grid; place-items: center; cursor: pointer;
  font-size: 18px; line-height: 1; color: #fff;
  background: #2a3146; border: 1px solid var(--line-2); border-radius: 50%;
  box-shadow: var(--shadow-sm); transition: background .15s, transform .1s;
}
.preview-clear:hover { background: #3a445f; transform: scale(1.06); }

/* ===== buttons + icons ================================================== */
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 20px; }
.btn {
  appearance: none; cursor: pointer; font: inherit; font-weight: 650;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 17px; border-radius: var(--radius-xs);
  color: var(--text); background: #1c2335; border: 1px solid var(--line-2);
  transition: background .15s, border-color .15s, transform .08s, box-shadow .15s;
  white-space: nowrap;
}
.btn:hover { background: #232c43; border-color: #36436a; }
.btn:active { transform: translateY(1px); }
.btn.primary {
  color: #08102a; border-color: transparent;
  background: linear-gradient(180deg, var(--accent-hi), var(--accent-lo));
  box-shadow: 0 14px 26px -14px var(--accent);
}
.btn.primary:hover { background: linear-gradient(180deg, #a3cdff, #5b94f0); }
.btn.ghost { background: transparent; border-color: var(--line-2); color: var(--muted); }
.btn.ghost:hover { background: rgba(255, 255, 255, .04); color: var(--text); }
.btn.big { padding: 13px 22px; font-size: 15.5px; }
.btn[disabled] { opacity: .62; cursor: progress; }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

/* the decode CTA fills the row; "Scan another" sits beside it */
.actions .btn.big { flex: 1 1 auto; }

/* button glyphs: a fixed box so the SVG can be 100% without ballooning */
.ico { width: 17px; height: 17px; flex: 0 0 auto; display: inline-grid; place-items: center; }
.ico svg { width: 100%; height: 100%; display: block; }

.spinner {
  width: 17px; height: 17px; border-radius: 50%; flex: 0 0 auto;
  border: 2.5px solid rgba(255, 255, 255, .35); border-top-color: #fff;
  animation: spin .7s linear infinite;
}

/* ===== result zone + desktop empty state ================================ */
.result-zone:empty { display: none; }
.result-zone { margin-bottom: 18px; }
.result-zone:focus { outline: none; }

.placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: 6px; min-height: 340px; padding: 40px 28px;
  border: 1.5px dashed var(--line-2); border-radius: var(--radius);
  background:
    radial-gradient(130% 90% at 50% 0%, rgba(110, 168, 254, .06), transparent 65%),
    var(--bg-2);
  color: var(--muted);
}
.ph-ico {
  width: 64px; height: 64px; display: grid; place-items: center; margin-bottom: 8px;
  color: var(--accent); border-radius: 18px;
  background: rgba(110, 168, 254, .1); border: 1px solid var(--line-2);
}
.ph-ico svg { width: 34px; height: 34px; }
.placeholder h2 { margin: 0; font-size: 16px; font-weight: 700; color: var(--text); }
.placeholder p { margin: 0; font-size: 13.5px; color: var(--faint); max-width: 34ch; }

/* ===== banner =========================================================== */
.banner {
  display: flex; align-items: center; gap: 11px;
  padding: 13px 16px; border-radius: var(--radius-sm); margin: 0 0 16px;
  font-size: 15.5px; font-weight: 650;
  animation: pop .35s cubic-bezier(.2, .9, .3, 1.2) both;
}
.banner-ico {
  display: grid; place-items: center; width: 26px; height: 26px; flex: 0 0 auto;
  border-radius: 50%; font-size: 15px;
}
.banner.ok { background: var(--ok-bg); color: var(--ok); border: 1px solid var(--ok-line); }
.banner.ok .banner-ico { background: rgba(84, 224, 140, .18); }
.banner.bad { background: var(--bad-bg); color: var(--bad); border: 1px solid var(--bad-line); }
.banner.bad .banner-ico { background: rgba(255, 143, 143, .16); }

/* ===== plain result (no-JS / binary) ==================================== */
.result {
  font-size: 16px; line-height: 1.5; word-break: break-word;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 15px; margin: 0 0 14px;
}
.result.mono, .result .mono, code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.result.mono code { font-size: 12.5px; word-break: break-all; color: var(--muted); }
.result-tag { display: inline-block; font-size: 11px; letter-spacing: .08em; color: var(--faint); margin-bottom: 6px; }
.result a { color: var(--accent-hi); }

/* ===== smart result card (JS) =========================================== */
.smart {
  background:
    radial-gradient(120% 80% at 0% 0%, rgba(110, 168, 254, .07), transparent 60%),
    var(--bg-2);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px; margin: 0 0 14px;
}
.smart-head { display: flex; align-items: center; gap: 13px; margin-bottom: 14px; }
.smart-ico {
  flex: 0 0 auto; width: 46px; height: 46px; display: grid; place-items: center;
  border-radius: 13px; color: var(--accent);
  background: linear-gradient(160deg, rgba(110, 168, 254, .2), rgba(139, 123, 255, .12));
  border: 1px solid var(--line-2);
}
.smart-ico svg { width: 23px; height: 23px; }
.smart-kind { font-size: 11.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--faint); font-weight: 700; }
.smart-title { font-weight: 700; font-size: 17px; word-break: break-word; margin-top: 2px; line-height: 1.25; }
.smart-body { margin: 2px 0 0; }
.smart-text {
  font-size: 14.5px; line-height: 1.55; word-break: break-word; white-space: pre-wrap;
  max-height: 240px; overflow: auto;
  background: rgba(0, 0, 0, .18); border: 1px solid var(--line);
  border-radius: var(--radius-xs); padding: 13px 14px;
}
.fields { display: grid; gap: 9px; margin: 4px 0 2px; }
.field { display: grid; grid-template-columns: 96px 1fr; gap: 4px 14px; align-items: baseline; }
.field b { color: var(--muted); font-weight: 600; font-size: 12.5px; }
.field span { word-break: break-word; }
.field .secret { font-family: ui-monospace, Menlo, monospace; letter-spacing: .04em; }
.reveal { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; font-size: 12.5px; padding: 0; margin-left: 8px; }
.reveal:hover { text-decoration: underline; }

.smart-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }

/* ===== metadata chips =================================================== */
.meta { display: flex; flex-wrap: wrap; gap: 7px; margin: 2px 0 0; }
.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; color: var(--muted);
  background: rgba(0, 0, 0, .2); border: 1px solid var(--line);
  padding: 5px 10px; border-radius: 999px;
}
.chip b { color: var(--text); font-weight: 650; }
.chip.accent { color: var(--accent); border-color: rgba(110, 168, 254, .4); background: rgba(110, 168, 254, .08); }
.chip.accent b { color: var(--accent-hi); }

/* ===== key/value (no-JS + upload meta) ================================= */
.kv { display: grid; grid-template-columns: 132px 1fr; gap: 7px 14px; font-size: 13.5px; color: var(--text); }
.kv b { color: var(--muted); font-weight: 600; }

.tips { margin: 12px 0 0; font-size: 13px; color: var(--muted); }
.tips b { color: var(--text); }
.tips ul { margin: 7px 0 0; padding-left: 18px; }
.tips li { margin: 5px 0; }

code { background: #1a2030; padding: 1px 6px; border-radius: 5px; color: var(--text); font-size: 12.5px; word-break: break-all; }
pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; overflow: auto; }
pre code { background: none; padding: 0; }

/* ===== loading ========================================================== */
.loading {
  display: flex; align-items: center; gap: 14px; padding: 22px;
  color: var(--muted); background: var(--bg-2);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  min-height: 88px;
}
.loading .spinner { border-color: rgba(110, 168, 254, .25); border-top-color: var(--accent); width: 22px; height: 22px; }
.loading b { color: var(--text); font-weight: 650; }
.loading small { display: block; color: var(--faint); font-weight: 400; margin-top: 2px; }

/* ===== history ========================================================== */
.history { margin: 18px 0 0; }
.history-head { display: flex; align-items: center; justify-content: space-between; margin: 0 0 11px; }
.history-head h2 { font-size: 12px; letter-spacing: .07em; text-transform: uppercase; color: var(--faint); margin: 0; font-weight: 700; }
.history-clear { background: none; border: 0; color: var(--faint); cursor: pointer; font: inherit; font-size: 12.5px; }
.history-clear:hover { color: var(--bad); text-decoration: underline; }
.history-list { display: grid; gap: 8px; }
.hitem {
  display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; cursor: pointer;
  padding: 11px 13px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-sm); color: var(--text); font: inherit;
  transition: border-color .15s, background .15s, transform .08s;
}
.hitem:hover { border-color: var(--line-2); background: var(--card-2); transform: translateY(-1px); }
.hitem .hico { flex: 0 0 auto; width: 32px; height: 32px; display: grid; place-items: center; color: var(--accent); background: rgba(110, 168, 254, .12); border-radius: 9px; }
.hitem .hico svg { width: 17px; height: 17px; }
.hitem .htext { min-width: 0; flex: 1; }
.hitem .htext .ht1 { font-weight: 600; font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hitem .htext .ht2 { font-size: 11.5px; color: var(--faint); }

/* ===== toast ============================================================ */
.toast {
  position: fixed; left: 50%; bottom: 26px; transform: translate(-50%, 14px);
  background: #0e1322; color: var(--text); border: 1px solid var(--line-2);
  padding: 11px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600;
  box-shadow: var(--shadow); z-index: 50; opacity: 0;
  transition: opacity .2s, transform .2s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ===== footer =========================================================== */
.foot { color: var(--faint); font-size: 12.5px; margin-top: 34px; text-align: center; }
.foot p { margin: 5px 0; }
.foot a { color: var(--muted); }

/* ===== two-pane workspace (JS, wide screens) ============================ */
@media (min-width: 900px) {
  .wrap { max-width: 1040px; padding: 36px 24px 64px; }
  .hero { margin-bottom: 28px; }

  html.js main.app {
    display: grid;
    grid-template-columns: minmax(0, 372px) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 22px;
    align-items: start;
  }
  /* sticky input card on the left, spanning both result + history rows */
  html.js main.app > .form { grid-column: 1; grid-row: 1 / span 2; position: sticky; top: 24px; margin: 0; }
  html.js main.app > .result-zone { grid-column: 2; grid-row: 1; margin: 0; }
  html.js main.app > .history { grid-column: 2; grid-row: 2; margin: 14px 0 0; }
  /* the toggles get full width in the narrow input column so their hints fit */
  html.js main.app > .form .options { grid-template-columns: 1fr; }
}

/* ===== animations ======================================================= */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pop { 0% { opacity: 0; transform: scale(.96); } 100% { opacity: 1; transform: scale(1); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* ===== small phones ===================================================== */
@media (max-width: 460px) {
  .wrap { padding: 22px 14px 48px; }
  h1 { font-size: 23px; }
  .hero { gap: 13px; }
  .logo { width: 46px; height: 46px; }
  .card { padding: 17px; }
  .kv { grid-template-columns: 108px 1fr; }
  .field { grid-template-columns: 80px 1fr; }
  .smart-actions .btn { flex: 1 1 auto; }
}