:root {
  --ink: #1d2430;
  --ink-soft: #5a6473;
  --paper: #f6f3ec;
  --card: #ffffff;
  --line: #e2ddd1;
  --accent: #2f7d4f;
  --accent-dark: #22583a;
  --bean: #b87333;
  --danger: #a32b2b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.masthead {
  padding: 2.5rem 1.5rem 1.75rem;
  text-align: center;
  background: linear-gradient(180deg, #eef6ef, var(--paper));
  border-bottom: 1px solid var(--line);
}

.masthead h1 { margin: 0 0 .35rem; font-size: 2.1rem; letter-spacing: -.02em; }
.tagline { margin: 0; color: var(--ink-soft); }

.provider-badge {
  display: inline-block;
  margin-top: 1rem;
  padding: .3rem .8rem;
  border-radius: 999px;
  font-size: .82rem;
  border: 1px solid var(--line);
  background: var(--card);
}
.provider-mock { color: var(--bean); }
.provider-live { color: var(--accent-dark); }
.provider-badge .hint { color: var(--ink-soft); }

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 4rem;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem 1.5rem;
  margin-bottom: 1.5rem;
}

fieldset { border: 0; margin: 0 0 1.75rem; padding: 0; }
fieldset:last-of-type { margin-bottom: 1rem; }

legend {
  padding: 0;
  margin-bottom: .9rem;
  font-weight: 650;
  font-size: 1.05rem;
  color: var(--accent-dark);
}

label { display: block; font-weight: 550; margin-bottom: .3rem; }
.field-help { margin: .3rem 0 0; font-size: .8rem; color: var(--ink-soft); }

.file-label input[type="file"] {
  width: 100%;
  padding: .7rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: #fbfaf7;
}

.control { margin-bottom: 1.1rem; }
.control:last-child { margin-bottom: 0; }

.grid-2, .grid-3 { display: grid; gap: 0 1rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

input[type="text"], select, textarea {
  width: 100%;
  padding: .5rem .6rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font: inherit;
  color: inherit;
}
input[type="text"]:focus, select:focus, textarea:focus, input[type="file"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

input[type="range"] { width: 100%; accent-color: var(--accent); }
output { float: right; color: var(--accent-dark); font-variant-numeric: tabular-nums; }
.scale-hints {
  display: flex;
  justify-content: space-between;
  margin: .15rem 0 0;
  font-size: .75rem;
  color: var(--ink-soft);
}

.checks { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-top: 1rem; }
.check { display: flex; align-items: center; gap: .45rem; font-weight: 450; margin: 0; }
.check input { width: auto; }

.scenes { display: grid; gap: .75rem; }
.scene {
  display: grid;
  gap: .3rem;
  padding: .85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  background: #fbfaf7;
}
.scene:has(input:checked) { border-color: var(--accent); background: #f2f8f3; }
.scene input { width: auto; justify-self: start; }
.scene-title { font-weight: 600; display: block; }
.scene-caption { font-size: .82rem; color: var(--ink-soft); }

button.primary, .button {
  display: inline-block;
  padding: .7rem 1.4rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
button.primary:hover, .button:hover { background: var(--accent-dark); }
button.primary:disabled { background: #9aa5a0; cursor: progress; }
.button.secondary { background: #fff; color: var(--accent-dark); border: 1px solid var(--accent); }
.button.secondary:hover { background: #f2f8f3; }

.preview-wrap { margin-top: .9rem; }
.preview-wrap img { max-width: 190px; border-radius: 8px; border: 1px solid var(--line); }

/* Photo intake: picker and camera button side by side, then the in-page
   camera pane (hidden until live) and inline status messages. */
.photo-controls { display: flex; gap: .75rem; align-items: stretch; flex-wrap: wrap; }
.photo-controls .file-label { flex: 1 1 16rem; }
.photo-controls .file-label input[type="file"] { height: 100%; }

.camera-pane { margin-top: .9rem; }
.camera-pane video {
  display: block;
  width: 100%;
  max-width: 320px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #000;
  /* Mirror the live view: people steer themselves by the mirror image. */
  transform: scaleX(-1);
}
.camera-actions { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .6rem; }

.inline-message {
  margin: .5rem 0 0;
  font-size: .85rem;
  color: var(--danger);
}
.inline-message.hidden { display: none; }

/* Everything but photo + scene + call-to-action folds away here. */
.advanced-options {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.advanced-options > summary {
  font-weight: 550;
  color: var(--ink-soft);
}
.advanced-options > summary::marker { color: var(--ink-soft); }
.advanced-options[open] > summary { margin-bottom: .5rem; }

.hidden { display: none !important; }

.status { margin-bottom: 1rem; font-size: .92rem; }
.status.error { color: var(--danger); }
.status.busy::after {
  content: "";
  display: inline-block;
  width: .8em; height: .8em;
  margin-left: .5em;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: -1px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.result-grid figure { margin: 0; }
.result-grid figcaption {
  font-size: .8rem;
  color: var(--ink-soft);
  margin-bottom: .4rem;
}
.result-grid img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fbfaf7;
}

.caption-block { margin-top: 1.25rem; }
.caption-block h3 { margin: 0 0 .4rem; font-size: .95rem; }
blockquote {
  margin: 0;
  padding: .8rem 1rem;
  border-left: 3px solid var(--bean);
  background: #fbf6ee;
  border-radius: 0 8px 8px 0;
}

details { margin-top: 1.25rem; }
summary { cursor: pointer; font-weight: 550; }
details h4 { margin: .9rem 0 .3rem; font-size: .85rem; color: var(--ink-soft); }
pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #f4f2ec;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .8rem;
  font-size: .76rem;
  max-height: 22rem;
  overflow: auto;
}

.result-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.25rem; }

@media (max-width: 640px) {
  .grid-2, .grid-3, .result-grid { grid-template-columns: 1fr; }
  .masthead h1 { font-size: 1.6rem; }
}
/* --- two-step review stage ------------------------------------------------ */

.stage-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.stage-head h2 { margin: 0 0 .5rem; }

.cost-pill {
  margin: 0;
  padding: .2rem .7rem;
  border-radius: 999px;
  background: #f0ede4;
  border: 1px solid var(--line);
  font-size: .76rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.review {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  margin: 1rem 0;
}
.review-image {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fbfaf7;
}
.review-side h3 { margin: 0 0 .4rem; font-size: .95rem; }
.review-side .field-help { margin-bottom: .9rem; }

.prompt-details { margin-top: 1rem; }

.stage-actions {
  display: flex;
  align-items: center;
  gap: .85rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.stage-actions .field-help { margin: 0; }

@media (max-width: 640px) {
  .review { grid-template-columns: 1fr; }
}

/* --- review: compare, pick, reject ---------------------------------------- */

.compare {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1rem 0;
}
.compare-side { margin: 0; }
.compare-side figcaption {
  font-size: .8rem;
  color: var(--ink-soft);
  margin-bottom: .35rem;
}

.zoom {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfaf7;
  cursor: zoom-in;
  overflow: hidden;
}
.zoom img { display: block; width: 100%; }
.zoom-hint {
  position: absolute;
  right: .5rem;
  bottom: .5rem;
  padding: .15rem .5rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, .55);
  color: #fff;
  font-size: .7rem;
  opacity: 0;
  transition: opacity .15s;
}
.zoom:hover .zoom-hint, .zoom:focus-visible .zoom-hint { opacity: 1; }

.candidates { margin: 1rem 0; }
.candidates h3 { margin: 0 0 .5rem; font-size: .95rem; }
.candidate-strip { display: flex; gap: .75rem; flex-wrap: wrap; }
.candidate {
  padding: .35rem;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  cursor: pointer;
  font: inherit;
}
.candidate img { display: block; width: 120px; border-radius: 6px; }
.candidate span { display: block; font-size: .72rem; color: var(--ink-soft); margin-top: .25rem; }
.candidate.chosen { border-color: var(--accent); background: #f2f8f3; }

.review-actions {
  display: flex;
  align-items: center;
  gap: .85rem;
  flex-wrap: wrap;
  margin: 1.25rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.cost-note { margin: 0; font-size: .78rem; color: var(--ink-soft); }

.reject {
  margin: 1.5rem 0 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfaf7;
}
.reject h3 { margin: 0 0 .3rem; font-size: .95rem; }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .8rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin: 0;
  padding: .3rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  font-weight: 450;
  font-size: .84rem;
  cursor: pointer;
}
.chip:has(input:checked) { border-color: var(--danger); background: #fdf0f0; color: #7d2020; }
.chip input { width: auto; margin: 0; }
.chip:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }

.filmstrip-block { margin-top: 1.5rem; }
.filmstrip-block h3 { margin: 0 0 .5rem; font-size: .95rem; }
.filmstrip { display: flex; gap: .75rem; flex-wrap: wrap; }
.filmstrip figure { margin: 0; cursor: zoom-in; }
.filmstrip img {
  width: 88px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
}
.filmstrip figcaption { font-size: .68rem; color: var(--ink-soft); margin-top: .2rem; }

.lightbox {
  border: 0;
  border-radius: var(--radius);
  padding: 1.25rem;
  max-width: min(92vw, 1000px);
  background: #fff;
}
.lightbox::backdrop { background: rgba(0, 0, 0, .72); }
.lightbox img { display: block; max-width: 100%; max-height: 78vh; border-radius: 8px; }
.lightbox-caption { margin: .6rem 0 0; font-size: .82rem; color: var(--ink-soft); text-align: center; }
.lightbox-close {
  position: absolute;
  top: .4rem;
  right: .6rem;
  border: 0;
  background: transparent;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ink-soft);
}

/* The one-step explanation belongs to the checkbox, not to the button, so it
   sits tight under it with clear air before the call to action. Both are bigger
   than the .field-help used for inline hints: this is a decision, not a note. */
.one-step { margin-top: 1.4rem; }

.one-step-title { font-size: 1rem; font-weight: 550; }

.one-step-help {
  margin: .35rem 0 0 1.55rem;
  font-size: .92rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 46em;
}

.submit-block { margin-top: 1.75rem; }
.submit-help {
  margin: .5rem 0 0;
  font-size: .92rem;
  color: var(--ink-soft);
  max-width: 46em;
}

/* The login gate. Its own centred card, so the page never looks like the
   app it is hiding. */
.login-body { min-height: 100vh; }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.25rem;
}

.login-card {
  width: 100%;
  max-width: 22rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem 1.6rem 1.9rem;
  box-shadow: 0 8px 24px rgba(29, 36, 48, .07);
}

.login-card h1 { margin: 0 0 .35rem; font-size: 1.5rem; letter-spacing: -.02em; }
.login-tagline { margin: 0 0 1.4rem; color: var(--ink-soft); font-size: .95rem; }
.login-card label { display: block; margin-bottom: .35rem; font-weight: 550; }
.login-card input[type="password"] {
  width: 100%;
  padding: .6rem .7rem;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.login-card input[type="password"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.login-card .button { width: 100%; margin-top: 1.1rem; }

.login-error {
  margin: 0 0 1.1rem;
  padding: .6rem .75rem;
  border-radius: 8px;
  background: #fdf1f1;
  border: 1px solid #e6c7c7;
  color: var(--danger);
  font-size: .92rem;
}

/* The log-out control lives in the masthead, so it must not look like a
   button competing with the app itself. */
.logout-form { margin-top: .9rem; }
.logout-form button {
  background: none;
  border: 0;
  padding: 0;
  color: var(--ink-soft);
  font: inherit;
  font-size: .85rem;
  text-decoration: underline;
  cursor: pointer;
}
.logout-form button:hover { color: var(--ink); }

@media (max-width: 640px) {
  .compare { grid-template-columns: 1fr; }
}

/* ==========================================================================
   The picture book page
   ========================================================================== */

.book-nav a { color: var(--accent-dark); font-size: .9rem; }

.compare-grid { margin: 1rem 0; }
.compare-grid figure { margin: 0; }
.compare-grid figcaption { font-size: .8rem; color: var(--ink-soft); margin-top: .35rem; }
.compare-grid img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.review-actions { display: flex; gap: .9rem; flex-wrap: wrap; }

/* The finished book is one big PDF viewport — the whole book, not a grid of
   little page pictures. Fills the panel's width and most of the viewport's
   height on phones; taller where the screen allows it. */
.pdf-panel {
  margin: 1rem 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  overflow: hidden;
}
.pdf-frame {
  display: block;
  width: 100%;
  height: min(78vh, 56rem);
  border: 0;
}

.download-block { display: flex; gap: .9rem; flex-wrap: wrap; margin: 1rem 0; }
.download-block .button { text-decoration: none; padding: .55rem 1.1rem; }

@media (max-width: 720px) {
  .pdf-frame { height: min(64vh, 40rem); }
}