/* ==========================================================================
   TomatoSense — simple, single-column UI
   ========================================================================== */

:root {
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --bg:       #f7f5f2;
  --surface:  #ffffff;
  --border:   #e8e3dc;
  --border-2: #d5cfc6;

  --ink:   #1c1917;
  --ink-2: #57534e;
  --ink-3: #8a847c;

  --brand:       #d93a2b;
  --brand-hover: #bf2f22;
  --brand-soft:  #fdecea;
  --brand-ring:  rgba(217, 58, 43, 0.22);

  --ripe:        #d93a2b;
  --ripe-soft:   #fdecea;
  --ripe-ink:    #a02a1f;
  --unripe:      #1f8a5c;
  --unripe-soft: #e5f4ec;
  --unripe-ink:  #176947;

  --warn-soft: #fdf4e3;
  --warn-ink:  #7a5212;

  --radius: 14px;
  --shadow: 0 1px 2px rgba(28, 25, 23, 0.05), 0 4px 16px rgba(28, 25, 23, 0.05);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --max: 680px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
h1, h2, h3, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
img, svg { display: block; }
ul { margin: 0; padding: 0; list-style: none; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 6px; }
kbd {
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 11px; font-weight: 600;
  padding: 1px 6px; border-radius: 5px; border: 1px solid var(--border-2); border-bottom-width: 2px;
  background: var(--surface); color: var(--ink-2);
}
.icon { width: 18px; height: 18px; flex-shrink: 0; }
.icon-sm { width: 15px; height: 15px; flex-shrink: 0; }
.icon-lg { width: 26px; height: 26px; flex-shrink: 0; }

/* ---------- Header / footer ------------------------------------------- */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 20px;
  height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand .logo { width: 32px; height: 32px; }
.nav { display: flex; gap: 4px; }
.nav a {
  padding: 8px 14px; border-radius: 999px;
  font-size: 14.5px; font-weight: 500; color: var(--ink-2);
  transition: background 0.15s, color 0.15s;
}
.nav a:hover { background: var(--bg); color: var(--ink); }
.nav a.is-active { background: var(--brand-soft); color: var(--ripe-ink); font-weight: 600; }
.nav a { white-space: nowrap; }
.nav .long { display: inline; } .nav .short { display: none; }
@media (max-width: 480px) {
  .brand span { display: none; }
  .nav .long { display: none; } .nav .short { display: inline; }
}

.banner {
  background: var(--warn-soft); color: var(--warn-ink);
  border-bottom: 1px solid #f2dfb5;
  padding: 12px 20px; text-align: center; font-size: 14px;
}

main { flex: 1; width: 100%; max-width: var(--max); margin: 0 auto; padding: 40px 20px 64px; }

.footer {
  border-top: 1px solid var(--border);
  padding: 20px; text-align: center;
  font-size: 13px; color: var(--ink-3);
}
.footer a { text-decoration: underline; text-underline-offset: 3px; }
.footer a:hover { color: var(--ink); }

/* ---------- Typography ------------------------------------------------- */
.hero { text-align: center; margin-bottom: 28px; }
.hero h1 { font-size: 34px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.15; }
.hero p { color: var(--ink-2); margin-top: 10px; font-size: 17px; }
.page-title { font-size: 30px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.15; }
.lead { color: var(--ink-2); margin-top: 10px; font-size: 17px; }
.section { margin-top: 40px; }
.section h2 { font-size: 20px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 14px; }
.muted { color: var(--ink-3); }
.text-sm { font-size: 14px; }

/* ---------- Card ------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
}
.card + .card { margin-top: 16px; }

/* ---------- Buttons ---------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 22px; border-radius: 12px; border: 1px solid transparent;
  font-size: 16px; font-weight: 600; line-height: 1.2; white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 1px 2px rgba(217, 58, 43, 0.3); }
.btn-primary:hover:not(:disabled) { background: var(--brand-hover); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--border-2); }
.btn-secondary:hover:not(:disabled) { background: var(--bg); }
.btn-ghost { background: transparent; color: var(--ink-2); padding: 8px 12px; font-size: 14px; }
.btn-ghost:hover { color: var(--ink); background: var(--bg); }

/* ---------- Upload ----------------------------------------------------- */
.dropzone {
  position: relative;
  border: 2px dashed var(--border-2);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}
.dropzone:hover, .dropzone:focus-within { border-color: var(--brand); background: #fffaf9; }
.dropzone.is-dragover { border-color: var(--brand); background: var(--brand-soft); box-shadow: 0 0 0 4px var(--brand-ring); }
.dropzone input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.dropzone-icon {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 20px;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center;
}
.dropzone-title { font-size: 18px; font-weight: 600; }
.dropzone-title span { color: var(--brand); text-decoration: underline; text-underline-offset: 3px; }
.dropzone-text { font-size: 14px; color: var(--ink-3); margin-top: 8px; }
.dropzone-text.mobile-only { display: none; }
@media (hover: none) and (pointer: coarse) {
  .dropzone-text.desktop-only { display: none; }
  .dropzone-text.mobile-only { display: block; }
}

.preview { display: flex; flex-direction: column; gap: 12px; }
.preview-frame {
  position: relative; border-radius: var(--radius); overflow: hidden; background: #111;
  aspect-ratio: 4 / 3; max-height: 420px;
}
.preview-frame img { width: 100%; height: 100%; object-fit: contain; }
.preview-remove {
  position: absolute; top: 12px; right: 12px; width: 36px; height: 36px; border-radius: 50%;
  background: rgba(0, 0, 0, 0.55); color: #fff; border: 0;
  display: flex; align-items: center; justify-content: center; backdrop-filter: blur(6px);
}
.preview-remove:hover { background: var(--brand); }
.preview-name { font-size: 14px; color: var(--ink-3); text-align: center; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.preview-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.preview-actions .btn-primary { flex: 1 1 200px; }
.preview-actions .btn-secondary { flex: 1 1 140px; }

.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.35); border-top-color: #fff;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Alerts ----------------------------------------------------- */
.alert {
  display: flex; gap: 12px; align-items: flex-start;
  margin-top: 16px; padding: 14px 16px; border-radius: 12px;
  background: var(--brand-soft); border: 1px solid #f5c5bf; color: #8a2419; font-size: 15px;
}
.alert .icon { color: var(--brand); margin-top: 2px; }
.alert strong { display: block; margin-bottom: 2px; }
.alert .btn-link { background: none; border: 0; padding: 0; margin-top: 6px; font-size: 14px; font-weight: 600; text-decoration: underline; color: inherit; }

/* ---------- Result ----------------------------------------------------- */
.result { margin-top: 16px; text-align: center; padding: 28px 22px 22px; }
.result.is-ripe   { border-color: #f5c5bf; background: linear-gradient(180deg, #fff7f6, #fff); }
.result.is-unripe { border-color: #bfe3cf; background: linear-gradient(180deg, #f3faf6, #fff); }
.result-eyebrow { font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.result-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 44px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin-top: 8px;
}
.result-label .swatch { width: 18px; height: 18px; border-radius: 50%; }
.is-ripe .result-label { color: var(--ripe-ink); }
.is-ripe .result-label .swatch { background: var(--ripe); }
.is-unripe .result-label { color: var(--unripe-ink); }
.is-unripe .result-label .swatch { background: var(--unripe); }
.result-text { font-size: 17px; color: var(--ink-2); margin-top: 10px; }

.confidence { margin: 22px auto 0; max-width: 360px; }
.confidence-head { display: flex; justify-content: space-between; font-size: 14px; color: var(--ink-2); margin-bottom: 8px; }
.confidence-head strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.meter { height: 10px; border-radius: 999px; background: rgba(28, 25, 23, 0.08); overflow: hidden; }
.meter-fill { height: 100%; width: 0; border-radius: 999px; transition: width 0.8s var(--ease); }
.is-ripe .meter-fill { background: var(--ripe); }
.is-unripe .meter-fill { background: var(--unripe); }
.confidence-note { font-size: 14px; color: var(--ink-3); margin-top: 10px; }

.result-actions { margin-top: 22px; display: flex; justify-content: center; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 6px; padding: 3px 10px; border-radius: 999px;
  font-size: 12.5px; font-weight: 600;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge-ripe   { background: var(--ripe-soft);   color: var(--ripe-ink); }
.badge-unripe { background: var(--unripe-soft); color: var(--unripe-ink); }

/* ---------- Tips / steps ----------------------------------------------- */
.tips { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .tips { grid-template-columns: repeat(3, 1fr); } }
.tip { display: flex; gap: 12px; align-items: flex-start; font-size: 14.5px; color: var(--ink-2); }
.tip .icon { color: var(--unripe); margin-top: 2px; }
.tip strong { display: block; color: var(--ink); font-weight: 600; margin-bottom: 2px; }

.steps { display: grid; gap: 14px; }
.step { display: flex; gap: 16px; align-items: flex-start; }
.step-num {
  width: 36px; height: 36px; border-radius: 12px; flex-shrink: 0;
  background: var(--brand-soft); color: var(--brand);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.step strong { display: block; font-size: 16px; }
.step p { color: var(--ink-2); font-size: 15px; margin-top: 2px; }

.stat-row { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.stat-big { font-size: 48px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; color: var(--ripe-ink); }
.stat-row p { flex: 1 1 240px; color: var(--ink-2); font-size: 15px; }

.plain-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--ink-2); font-size: 15px; padding: 6px 0; }
.plain-list .icon { color: var(--ink-3); margin-top: 3px; width: 16px; height: 16px; }

.cta { text-align: center; margin-top: 40px; }

/* ---------- Motion ----------------------------------------------------- */
.fade-in { animation: fadeIn 0.35s var(--ease) both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- Status / progress / notice --------------------------------- */
.status { display: flex; align-items: center; justify-content: center; gap: 12px; padding: 48px 24px; color: var(--ink-2); }
.spinner-dark { width: 22px; height: 22px; border-color: rgba(28, 25, 23, 0.12); border-top-color: var(--brand); }

.progress { margin-top: 16px; }
.progress-head { display: flex; justify-content: space-between; font-size: 14px; color: var(--ink-2); margin-bottom: 8px; font-variant-numeric: tabular-nums; }
.meter-fill.is-neutral { background: var(--brand); }
.meter-fill.is-indeterminate {
  width: 100% !important;
  background: linear-gradient(90deg, var(--brand-soft) 0%, var(--brand) 50%, var(--brand-soft) 100%);
  background-size: 200% 100%;
  animation: slide 1.2s linear infinite;
}
@keyframes slide { from { background-position: 200% 0; } to { background-position: 0 0; } }

.notice {
  display: flex; gap: 10px; align-items: flex-start;
  margin-top: 16px; padding: 12px 14px; border-radius: 12px;
  background: var(--bg); border: 1px solid var(--border); color: var(--ink-2); font-size: 14px;
}
.notice .icon { color: var(--ink-3); margin-top: 2px; }

/* ---------- Batch selection -------------------------------------------- */
.batch-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; font-size: 15px; }
.thumb-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); gap: 10px; margin-bottom: 16px; }
.thumb { position: relative; aspect-ratio: 1; border-radius: 12px; overflow: hidden; background: var(--bg); border: 1px solid var(--border); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb-remove {
  position: absolute; top: 6px; right: 6px; width: 26px; height: 26px; border-radius: 50%; border: 0;
  background: rgba(0, 0, 0, 0.55); color: #fff; display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.thumb-remove svg { width: 13px; height: 13px; }
.thumb-remove:hover { background: var(--brand); }

/* ---------- Batch results ---------------------------------------------- */
.batch-result { margin-top: 16px; }
.summary { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.summary-item {
  flex: 1 1 120px; max-width: 180px; text-align: center;
  padding: 16px 12px; border-radius: 12px; background: var(--bg); border: 1px solid var(--border);
}
.summary-item.is-ripe   { background: var(--ripe-soft);   border-color: #f5c5bf; }
.summary-item.is-unripe { background: var(--unripe-soft); border-color: #bfe3cf; }
.summary-num { display: block; font-size: 36px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.is-ripe .summary-num   { color: var(--ripe-ink); }
.is-unripe .summary-num { color: var(--unripe-ink); }
.summary-label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-2); margin-top: 6px; }
.summary-text { text-align: center; font-size: 17px; color: var(--ink-2); margin-top: 16px; }

.result-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; margin-top: 22px; }
.result-tile { border-radius: 12px; overflow: hidden; border: 1px solid var(--border); background: var(--surface); }
.result-tile.is-ripe   { border-color: #f5c5bf; }
.result-tile.is-unripe { border-color: #bfe3cf; }
.result-tile.is-failed { opacity: 0.85; }
.result-tile img { width: 100%; aspect-ratio: 1; object-fit: cover; background: var(--bg); }
.result-tile-body { padding: 10px; display: flex; flex-direction: column; align-items: flex-start; gap: 4px; }
.result-tile-body .badge { margin-top: 0; }
.result-tile-conf { font-size: 12.5px; color: var(--ink-3); line-height: 1.35; }
.badge-failed { background: var(--bg); color: var(--ink-2); }
.badge-failed::before { display: none; }