/* Sentient Discovery Canvas: design tokens + app styles.
   Palette, type, and accent colours are drawn from Sentient's own "AI at
   Sentient" deck: deep navy ground, Geist for display and body text,
   JetBrains Mono for labels, and a signature cyan accent alongside a
   secondary purple used sparingly for gradient flourishes. Font files are
   self-hosted (public/assets/fonts/) to keep /c/* free of third-party
   requests, per the plan's privacy stance. */

@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/geist-sans-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/geist-sans-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/geist-sans-latin-600-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/geist-sans-latin-700-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-500-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-latin-600-normal.woff2') format('woff2');
}

:root {
  --ink: #0a0e1a;          /* near-black navy, headings, primary text */
  --ink-soft: #5a6478;     /* secondary text */
  --line: #e2e6f0;         /* borders, dividers */
  --surface: #ffffff;
  --canvas-bg: #f5f7fb;    /* app background, faint navy tint */
  --accent: #0e7490;       /* Sentient cyan, darkened for AA contrast on white */
  --accent-2: #7c3aed;     /* secondary purple, gradient flourishes only */
  --accent-ink: #ffffff;   /* text on accent */
  --accent-soft: #e3f6fb;  /* accent tint for selected states */
  --like: #0b8a5c;
  --dislike: #d1304a;
  --focus: #0e7490;

  --serif: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; /* display/headings */
  --sans: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;  /* body/UI */
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;        /* labels, eyebrows, metadata */

  --max-w: 720px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(10, 14, 26, 0.04), 0 8px 24px rgba(10, 14, 26, 0.06);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--canvas-bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden; /* belt-and-braces: a stray wide child should scroll internally, not shift the whole page */
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- App shell ---------- */

.canvas-app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.canvas-topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; /* also serves as the positioning context for the ::after underline below */
  top: 0;
  z-index: 10;
}
.canvas-topbar::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.canvas-topbar__brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.canvas-topbar__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: #ffffff; /* the mark is supplied on white; a small badge keeps it legible in dark mode instead of a stray white square */
  flex-shrink: 0;
  overflow: hidden;
  padding: 5px;
}
.canvas-topbar__mark img { width: 100%; height: 100%; object-fit: contain; }

.canvas-topbar__mark--lockup {
  width: auto;
  height: 40px;
  border-radius: 8px;
  padding: 6px 12px;
}
.canvas-topbar__mark--lockup img { width: auto; height: 100%; object-fit: contain; }

.canvas-progress {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.canvas-progress__section {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.canvas-progress__track {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.canvas-progress__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  transition: width 300ms ease;
  width: 0%;
}

.canvas-saved {
  font-size: 0.78rem;
  color: var(--ink-soft);
  white-space: nowrap;
  min-width: 64px;
  text-align: right;
}
.canvas-saved[data-state="saving"] { color: var(--accent); }
.canvas-saved[data-state="error"] { color: var(--dislike); }

.canvas-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(28px, 6vw, 72px) clamp(20px, 5vw, 48px) 120px;
}

.canvas-screen {
  width: 100%;
  max-width: var(--max-w);
  animation: canvas-in 320ms ease both;
}
.canvas-screen--wide { max-width: 920px; }

@media (prefers-reduced-motion: no-preference) {
  @keyframes canvas-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
}
@media (prefers-reduced-motion: reduce) {
  .canvas-screen { animation: none; }
}

.canvas-statement__image {
  display: block;
  width: 100%;
  max-width: 533px; /* 300 * 16/9: caps height at 300px via the ratio itself, instead of letting max-height fight aspect-ratio and squash the box short and wide on large screens */
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin: 0 0 28px;
}

/* Statement (intro/welcome) screens get a larger, more confident heading
   than regular question prompts, since there's no form below competing
   for space, and it needs to hold its own against the photo above it. */
.canvas-statement .canvas-eyebrow { font-size: 0.85rem; letter-spacing: 0.14em; }
.canvas-statement .canvas-prompt { font-size: clamp(1.9rem, 3.6vw, 2.75rem); }
.canvas-statement .canvas-helper { font-size: 1.08rem; line-height: 1.6; }

.canvas-eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}

.canvas-prompt {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

.canvas-helper {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0 0 28px;
  line-height: 1.5;
}

.canvas-body {
  margin-top: 24px;
}

.canvas-footer {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px clamp(20px, 4vw, 48px);
  background: linear-gradient(to top, var(--canvas-bg) 60%, transparent);
}

.canvas-nav {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

/* ---------- Buttons ---------- */

.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 22px;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, opacity 150ms ease;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:not(:disabled):hover { filter: brightness(1.08); }

.btn--ghost { background: transparent; color: var(--ink-soft); border-color: var(--line); }
.btn--ghost:not(:disabled):hover { color: var(--ink); border-color: var(--ink-soft); }

/* ---------- Choice cards (single/multi select) ---------- */

.choice-list { display: flex; flex-direction: column; gap: 10px; }

.choice-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  font-family: var(--sans);
  font-size: 0.98rem;
  color: var(--ink);
  transition: border-color 120ms ease, background 120ms ease;
}
.choice-card:hover { border-color: var(--accent); }
.choice-card[aria-pressed="true"], .choice-card[aria-checked="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.choice-card__mark {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 1.5px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px;
  color: transparent;
}
.choice-card[data-shape="round"] .choice-card__mark { border-radius: 999px; }
.choice-card[aria-pressed="true"] .choice-card__mark,
.choice-card[aria-checked="true"] .choice-card__mark {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.choice-card__kbd {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 6px;
  flex-shrink: 0;
}

/* ---------- Text inputs ---------- */

.field-textarea, .field-input {
  width: 100%;
  font-family: var(--sans);
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--ink);
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  resize: vertical;
}
.field-textarea:focus, .field-input:focus { border-color: var(--accent); }
.field-textarea { min-height: 140px; }

.invite-rows { display: flex; flex-direction: column; gap: 8px; }
.invite-row { display: flex; gap: 8px; align-items: center; }
.invite-row .field-input { padding: 10px 14px; font-size: 0.92rem; }
.invite-row [data-row-name] { flex: 1.2; min-width: 0; }
.invite-row [data-row-segment] { width: 140px; flex-shrink: 0; }
.invite-row [data-row-domain] { flex: 1; min-width: 0; }
.invite-row__remove {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
}

.field-other {
  margin-top: 10px;
}

/* ---------- Pick and rank ---------- */

.rank-list { display: flex; flex-direction: column; gap: 8px; margin-top: 20px; }
.rank-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border: 1.5px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 10px;
  transition: transform 150ms ease;
}
.rank-item--dragging {
  transition: none;
  z-index: 5;
  position: relative;
  box-shadow: var(--shadow);
  cursor: grabbing;
}
.rank-item__handle {
  appearance: none;
  border: none;
  background: none;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  text-align: center;
  color: var(--ink-soft);
  cursor: grab;
  touch-action: none; /* stops touchmove scrolling the page while dragging */
  user-select: none;
  font-size: 1.1rem;
  line-height: 1;
}
.rank-item__handle:hover { color: var(--ink); background: color-mix(in srgb, var(--ink-soft) 12%, transparent); }
.rank-item__num {
  width: 24px; height: 24px; border-radius: 999px;
  background: var(--accent); color: var(--accent-ink);
  font-size: 0.78rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.rank-item__label { flex: 1; font-size: 0.92rem; }

/* ---------- Brand matrix ---------- */

.brand-matrix { display: flex; flex-direction: column; gap: 28px; }
.brand-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--surface);
}
.brand-block__logo-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 120px;
  width: 240px;
  padding: 16px 22px;
  margin-bottom: 14px;
  background: #ffffff; /* vendor logos are supplied on white; a deliberate white chip reads as intentional rather than a broken transparent PNG in dark mode */
  border: 1px solid var(--line);
  border-radius: 10px;
}
.brand-block__logo { max-height: 100%; max-width: 100%; object-fit: contain; display: block; }
.brand-block .field-textarea { min-height: 80px; margin-top: 6px; }
.brand-block label { font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); display: block; margin-top: 12px; }

/* ---------- Likert grid ---------- */

.likert-grid { display: flex; flex-direction: column; gap: 22px; }
.likert-row__label { font-size: 0.95rem; margin-bottom: 10px; }
.likert-row__scale { display: flex; gap: 6px; }
.likert-opt {
  flex: 1;
  padding: 10px 4px;
  text-align: center;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--ink-soft);
}
.likert-opt[aria-checked="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); font-weight: 600; }
.likert-scale-labels { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--ink-soft); margin-top: 24px; }

/* ---------- Scale (1-10) ---------- */

.scale-row { display: flex; gap: 6px; flex-wrap: wrap; }
.scale-opt {
  width: 44px; height: 44px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  cursor: pointer;
  font-weight: 600;
}
.scale-opt[aria-checked="true"] { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.scale-labels { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--ink-soft); margin-top: 10px; }

/* ---------- Highlighter ---------- */

.story-phrases { display: flex; flex-direction: column; gap: 10px; }
.story-phrase {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: 12px;
  transition: border-color 120ms ease, background 120ms ease;
}
.story-phrase[data-sentiment="like"] { border-color: var(--like); background: color-mix(in srgb, var(--like) 10%, var(--surface)); }
.story-phrase[data-sentiment="dislike"] { border-color: var(--dislike); background: color-mix(in srgb, var(--dislike) 10%, var(--surface)); }
.story-phrase__text {
  flex: 1;
  margin: 0;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 1.05rem;
  line-height: 1.5;
}
.story-phrase__votes { display: flex; gap: 8px; flex-shrink: 0; }
.phrase-vote {
  appearance: none;
  border: 1.5px solid var(--line);
  background: var(--surface);
  border-radius: 10px;
  width: 42px;
  height: 42px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: border-color 120ms ease, background 120ms ease, transform 100ms ease;
}
.phrase-vote:hover { transform: scale(1.06); }
.phrase-vote--like[aria-pressed="true"] { border-color: var(--like); background: color-mix(in srgb, var(--like) 22%, transparent); }
.phrase-vote--dislike[aria-pressed="true"] { border-color: var(--dislike); background: color-mix(in srgb, var(--dislike) 22%, transparent); }

/* ---------- Image picker ---------- */

.image-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.image-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 2.5px solid transparent;
  cursor: pointer;
  background: var(--surface);
}
.image-card img { display: block; width: 100%; height: 150px; object-fit: cover; }
.image-card[aria-pressed="true"] { border-color: var(--accent); }
.image-card__mark {
  position: absolute; top: 8px; right: 8px;
  width: 26px; height: 26px; border-radius: 999px;
  background: rgba(0,0,0,0.5); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; opacity: 0;
}
.image-card[aria-pressed="true"] .image-card__mark { opacity: 1; background: var(--accent); color: var(--accent-ink); }

/* ---------- Interstitial states (invalid/expired/submitted, thank-you) ---------- */

.canvas-interstitial {
  max-width: 520px;
  text-align: center;
  margin: 0 auto;
}
.canvas-interstitial h1 { font-family: var(--serif); font-size: 1.9rem; margin-bottom: 12px; }
.canvas-interstitial p { color: var(--ink-soft); line-height: 1.6; }

/* ---------- Admin ---------- */

.admin-shell { max-width: 1100px; margin: 0 auto; padding: 32px 20px 80px; font-family: var(--sans); }
.admin-shell h1 { font-family: var(--serif); }
.admin-tabs { display: flex; gap: 8px; margin: 20px 0 28px; border-bottom: 1px solid var(--line); }
.admin-tab { padding: 10px 4px; margin-right: 20px; border: none; background: none; cursor: pointer; font-weight: 600; color: var(--ink-soft); border-bottom: 2px solid transparent; }
.admin-tab[aria-selected="true"] { color: var(--ink); border-color: var(--accent); }
.admin-panel { display: none; }
.admin-panel[data-active="true"] { display: block; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.admin-table th, .admin-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.admin-table th { font-family: var(--mono); color: var(--ink-soft); font-weight: 500; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; }
.status-pill { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 0.72rem; font-weight: 600; font-family: var(--mono); }
.status-pill--not_opened { background: color-mix(in srgb, var(--ink-soft) 15%, transparent); color: var(--ink-soft); }
.status-pill--in_progress { background: var(--accent-soft); color: var(--accent); }
.status-pill--submitted { background: color-mix(in srgb, var(--like) 18%, transparent); color: var(--like); }
.status-pill--expired { background: color-mix(in srgb, var(--dislike) 15%, transparent); color: var(--dislike); }