/* Recipe Box — clean & modern theme.
   Neutral palette, generous whitespace, crisp system sans-serif, subtle
   shadows, big tap targets. Light/dark via prefers-color-scheme. All colors
   are CSS custom properties so the whole look can be retuned in one place. */

:root {
  --accent: #0f766e;          /* teal-700 */
  --accent-strong: #115e54;
  --accent-soft: #e6f3f1;
  --bg: #fafaf9;              /* warm near-white */
  --surface: #ffffff;
  --surface-2: #f4f4f2;
  --border: #e6e6e3;
  --text: #1c1c1a;
  --muted: #6b6f73;
  --danger: #c0392b;
  --star: #e0a000;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1100px;
  --header-h: 60px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #2dd4bf;
    --accent-strong: #5eead4;
    --accent-soft: #14302c;
    --bg: #0e1013;
    --surface: #181b20;
    --surface-2: #20242b;
    --border: #2a2f37;
    --text: #e7e9ec;
    --muted: #9aa0a8;
    --danger: #ef6a5b;
    --star: #f2c14e;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.4);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.5;
}

body { padding-bottom: env(safe-area-inset-bottom); }

a { color: var(--accent); text-decoration: none; }
button { font-family: inherit; }

.boot { padding: 4rem 1rem; text-align: center; color: var(--muted); }

/* ---------- Header ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: .75rem;
  height: var(--header-h);
  padding: 0 1rem;
  padding-top: env(safe-area-inset-top);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.app-header .brand {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 700; font-size: 1.15rem; letter-spacing: -.02em;
  cursor: pointer; background: none; border: none; color: var(--text); padding: 0;
}
.app-header .brand .logo { font-size: 1.4rem; }
.app-header .spacer { flex: 1; }

.search {
  flex: 1;
  max-width: 420px;
  display: flex; align-items: center; gap: .5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .45rem .9rem;
  box-shadow: var(--shadow-sm);
}
.search input {
  flex: 1; border: none; outline: none; background: none;
  color: var(--text); font-size: .95rem;
}
.search .ico { color: var(--muted); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: .6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .95rem; font-weight: 600;
  cursor: pointer;
  transition: transform .06s ease, background .15s ease, border-color .15s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.97); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-strong); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.danger { color: var(--danger); border-color: transparent; background: transparent; }
.btn.block { width: 100%; }
.btn.lg { padding: .85rem 1.2rem; font-size: 1.02rem; }
.btn .ico { font-size: 1.1em; }
.btn:disabled { opacity: .55; cursor: default; }

/* ---------- Layout ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 1.25rem 1rem 5rem; }
.row { display: flex; align-items: center; gap: .75rem; }
.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
h1.page-title { font-size: 1.5rem; letter-spacing: -.02em; margin: .25rem 0 1rem; }

.toolbar { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.chip {
  border: 1px solid var(--border); background: var(--surface);
  color: var(--muted); border-radius: 999px; padding: .4rem .85rem;
  font-size: .85rem; font-weight: 600; cursor: pointer;
}
.chip.active { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }

/* ---------- Card grid ---------- */
.grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform .1s ease, box-shadow .15s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card .thumb {
  aspect-ratio: 4 / 3; background: var(--surface-2);
  background-size: cover; background-position: center;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted); font-size: 2.4rem;
}
.card .body { padding: .8rem .9rem 1rem; display: flex; flex-direction: column; gap: .35rem; flex: 1; }
.card .title { font-weight: 700; letter-spacing: -.01em; line-height: 1.25; }
.card .meta { color: var(--muted); font-size: .82rem; display: flex; gap: .75rem; flex-wrap: wrap; }
.card .tags { margin-top: auto; display: flex; gap: .35rem; flex-wrap: wrap; }
.tag { background: var(--surface-2); color: var(--muted); font-size: .72rem; padding: .15rem .5rem; border-radius: 6px; }
.card .fav { position: absolute; }
.card-wrap { position: relative; }
.card-wrap .star-btn {
  position: absolute; top: .55rem; right: .55rem; z-index: 2;
  width: 34px; height: 34px; border-radius: 999px;
  border: none; background: rgba(0,0,0,.35); color: #fff;
  display: grid; place-items: center; cursor: pointer; font-size: 1rem;
  backdrop-filter: blur(4px);
}
.card-wrap .star-btn.on { color: var(--star); }

/* ---------- Empty / states ---------- */
.empty {
  text-align: center; color: var(--muted);
  padding: 4rem 1rem; display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
.empty .big { font-size: 3rem; }

/* ---------- Detail view ---------- */
.detail { max-width: 760px; margin: 0 auto; }
.detail .hero {
  width: 100%; border-radius: var(--radius); overflow: hidden;
  background: var(--surface-2); margin-bottom: 1rem;
}
.detail .hero img { width: 100%; display: block; max-height: 380px; object-fit: cover; }
.detail h1 { font-size: 1.9rem; letter-spacing: -.02em; margin: .2rem 0 .4rem; }
.detail .desc { color: var(--muted); margin-bottom: 1rem; }
.detail .facts { display: flex; gap: 1.5rem; flex-wrap: wrap; margin: 0 0 1.5rem; padding: 0; list-style: none; }
.detail .facts li { display: flex; flex-direction: column; }
.detail .facts .k { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.detail .facts .v { font-weight: 600; }
.section { margin-bottom: 1.75rem; }
.section h2 { font-size: 1.1rem; letter-spacing: -.01em; margin: 0 0 .75rem; }
.ing-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: .75rem; }
.ing-head h2 { margin: 0; }
.scale-row { display: flex; align-items: center; gap: .35rem; flex-wrap: wrap; }
.scale-row .scale-label { font-size: .8rem; color: var(--muted); margin-right: .1rem; }
.scale-chip { padding: .32rem .62rem; font-size: .85rem; }
.scale-note { font-size: .78rem; color: var(--muted); margin-top: .6rem; }
.ingredients { list-style: none; margin: 0; padding: 0; }
.ingredients li {
  display: flex; align-items: flex-start; gap: .7rem; padding: .5rem 0;
  border-bottom: 1px solid var(--border); cursor: pointer;
}
.ingredients li .box {
  flex: none; width: 20px; height: 20px; border-radius: 6px; margin-top: .15rem;
  border: 2px solid var(--border); display: grid; place-items: center;
  color: #fff; font-size: .7rem;
}
.ingredients li.checked .box { background: var(--accent); border-color: var(--accent); }
.ingredients li.checked span { color: var(--muted); text-decoration: line-through; }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.steps li {
  display: flex; gap: .9rem; padding: .6rem 0; align-items: flex-start;
}
.steps li::before {
  counter-increment: step; content: counter(step);
  flex: none; width: 28px; height: 28px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-strong);
  font-weight: 700; font-size: .85rem; display: grid; place-items: center;
}
.detail .actions { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 2rem; }

/* ---------- Forms ---------- */
.form { max-width: 680px; margin: 0 auto; display: flex; flex-direction: column; gap: 1.1rem; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field label { font-size: .82rem; font-weight: 600; color: var(--muted); }
.field input, .field textarea {
  width: 100%; padding: .7rem .8rem; font-size: 1rem; font-family: inherit;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-sm); outline: none;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 70px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
@media (max-width: 520px) { .grid-2 { grid-template-columns: 1fr; } }

.list-edit { display: flex; flex-direction: column; gap: .5rem; }
.list-edit .item { display: flex; gap: .5rem; align-items: flex-start; }
.list-edit .item textarea, .list-edit .item input { flex: 1; }
.list-edit .item .drag { color: var(--muted); padding-top: .6rem; cursor: default; }
.list-edit .item .rm {
  flex: none; width: 38px; height: 40px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--danger);
  cursor: pointer; font-size: 1.1rem;
}
.add-line { align-self: flex-start; }

.form .form-actions {
  position: sticky; bottom: 0;
  display: flex; gap: .6rem; padding: 1rem 0;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
}

/* ---------- Login ---------- */
.login {
  min-height: 100dvh; display: flex; align-items: center; justify-content: center; padding: 1.5rem;
}
.login .panel {
  width: 100%; max-width: 380px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 2rem 1.75rem;
  text-align: center;
}
.login .logo { font-size: 3rem; }
.login h1 { font-size: 1.5rem; letter-spacing: -.02em; margin: .5rem 0 .25rem; }
.login p { color: var(--muted); margin: 0 0 1.5rem; }
.login form { display: flex; flex-direction: column; gap: .75rem; text-align: left; }
.login .err { color: var(--danger); font-size: .88rem; min-height: 1.1em; text-align: center; }

/* ---------- Scan ---------- */
.scan { max-width: 560px; margin: 0 auto; }
.scan-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 480px) { .scan-choices { grid-template-columns: 1fr; } }
.scan-choice {
  display: flex; flex-direction: column; align-items: center; gap: .6rem;
  padding: 2rem 1rem; text-align: center;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: pointer; box-shadow: var(--shadow-sm);
}
.scan-choice:hover { border-color: var(--accent); }
.scan-choice .ico { font-size: 2.4rem; }
.scan-choice .label { font-weight: 700; }
.scan-choice .sub { font-size: .82rem; color: var(--muted); }
.previews { display: flex; gap: .6rem; flex-wrap: wrap; margin: 1rem 0; }
.previews img { width: 90px; height: 90px; object-fit: cover; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.scanning { text-align: center; padding: 3rem 1rem; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.examples { display: flex; flex-wrap: wrap; gap: .4rem; }
.examples .ex { cursor: pointer; }

/* ---------- Add popup ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0,0,0,.45);
  display: flex; align-items: flex-end; justify-content: center;
  backdrop-filter: blur(2px); animation: fade .15s ease;
}
@media (min-width: 600px) { .modal-backdrop { align-items: center; padding: 1rem; } }
.sheet {
  width: 100%; max-width: 520px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px 18px 0 0; box-shadow: var(--shadow);
  padding: 1rem 1rem 1.4rem; padding-bottom: calc(1.4rem + env(safe-area-inset-bottom));
  animation: slideup .2s ease;
}
@media (min-width: 600px) { .sheet { border-radius: 18px; } }
.sheet-head { display: flex; align-items: center; justify-content: space-between; margin: .2rem .25rem 1rem; }
.sheet-head h2 { margin: 0; font-size: 1.15rem; letter-spacing: -.01em; }
.sheet-close { border: none; background: none; color: var(--muted); font-size: 1.7rem; line-height: 1; cursor: pointer; padding: 0 .3rem; }
.add-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.add-tile {
  display: flex; flex-direction: column; align-items: center; gap: .3rem;
  padding: 1.15rem .5rem; text-align: center; color: var(--text);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); cursor: pointer;
  transition: transform .06s ease, border-color .15s ease;
  -webkit-tap-highlight-color: transparent;
}
.add-tile:active { transform: scale(.97); }
.add-tile:hover { border-color: var(--accent); }
.add-tile .ico { font-size: 1.75rem; }
.add-tile .label { font-weight: 700; }
.add-tile .sub { font-size: .76rem; color: var(--muted); }
.add-tile.gen { grid-column: 1 / -1; background: var(--accent-soft); border-color: transparent; }
.add-tile.gen .sub { color: var(--accent-strong); }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideup { from { transform: translateY(16px); } to { transform: translateY(0); } }

/* ---------- Spinner ---------- */
.spinner {
  width: 38px; height: 38px; border-radius: 999px;
  border: 3px solid var(--border); border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}
.spinner.sm { width: 18px; height: 18px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: calc(1.5rem + env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(20px);
  background: var(--text); color: var(--bg);
  padding: .7rem 1.1rem; border-radius: 999px; font-size: .9rem; font-weight: 600;
  box-shadow: var(--shadow); opacity: 0; pointer-events: none;
  transition: opacity .2s ease, transform .2s ease; z-index: 60; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--danger); color: #fff; }

/* ---------- FAB (mobile add) ---------- */
.fab {
  position: fixed; right: 1.1rem; bottom: calc(1.1rem + env(safe-area-inset-bottom));
  width: 58px; height: 58px; border-radius: 999px; border: none;
  background: var(--accent); color: #fff; font-size: 1.8rem;
  box-shadow: var(--shadow); cursor: pointer; z-index: 30;
  display: none; place-items: center;
}
@media (max-width: 720px) { .fab { display: grid; } .header-add { display: none; } }

.back-link { display: inline-flex; align-items: center; gap: .35rem; color: var(--muted); background: none; border: none; cursor: pointer; font-size: .92rem; margin-bottom: .75rem; padding: 0; }