:root {
  /* BTZ brand palette — source: BTZ Team Design System / brand.md §5 */
  --navy: #0c1d2c;        /* anchor */
  --navy-light: #2a3e52;
  --blush: #c4877a;       /* the single accent — "where the life is" */
  --teal: #0a8b94;        /* links + positive signal */
  --rose: #b06a7b;        /* negative signal */
  --gray: #5a6b7a;        /* secondary text */
  --white: #ffffff;
  --line: #e4e7ea;
  --line-strong: rgba(12, 29, 44, 0.14);
  --surface-tint: #f7f8f9;

  --ink: var(--navy);
  --good: var(--teal);
  --bad: var(--rose);

  --radius: 0px;          /* brand: corner radii = 0 (crisp editorial geometry) */
  --shadow: 0 1px 3px rgba(12, 29, 44, 0.05);

  --font-head: "Raleway", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Barlow", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--white);
  color: var(--ink);
  line-height: 1.55;
}

/* ---------- header ---------- */
.site-header {
  padding: 40px 20px 28px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.btz-logo {
  width: 132px;
  height: auto;
  display: block;
  margin: 0 auto 16px;
}

.eyebrow {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--gray);
}

.site-header h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 2.4rem;
  letter-spacing: 0.01em;
  color: var(--navy);
}

.subtitle {
  margin: 8px 0 0;
  font-size: 1rem;
  color: var(--gray);
}

/* ---------- layout ---------- */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 30px 20px 48px;
}

.results {
  margin-top: 24px;
  display: grid;
  gap: 20px;
}

/* ---------- cards ---------- */
.input-card,
.block {
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blush); /* brand: card left stripe */
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.block h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--navy);
}

/* brand: title accent square */
.block h2::after {
  content: "";
  display: block;
  width: 14px;
  height: 14px;
  background: var(--blush);
  margin: 10px 0 14px;
}

.block .recipe-name {
  color: var(--gray);
  font-size: 0.9rem;
  margin: 0 0 16px;
}

/* ---------- recipe-from-link row ---------- */
.url-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.url-row input[type="url"] {
  flex: 1 1 240px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--white);
}
.url-row input[type="url"]:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(10, 139, 148, 0.15);
}
.url-row .btn {
  white-space: nowrap;
}
.url-hint {
  font-size: 0.8rem;
  color: var(--gray);
  margin: 8px 0 18px;
}

/* ---------- form ---------- */
.field-label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.95rem;
  color: var(--navy);
}

textarea {
  width: 100%;
  resize: vertical;
  padding: 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-body);
  background: var(--white);
  color: var(--ink);
}

textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(10, 139, 148, 0.15);
}

.button-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--navy);
  color: #fff;
}
.btn-primary:hover {
  background: var(--navy-light);
}

.btn-ghost {
  background: #fff;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover {
  background: var(--surface-tint);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.status {
  margin: 14px 0 0;
  font-size: 0.9rem;
  min-height: 1.2em;
  color: var(--gray);
}
.status.error {
  color: var(--rose);
  font-weight: 700;
}

/* ---------- substitutions ---------- */
.sub-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.sub-item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-tint);
}
.sub-swap {
  font-weight: 600;
  color: var(--navy);
}
.sub-swap .arrow {
  color: var(--blush);
  margin: 0 8px;
  font-weight: 700;
}
.sub-reason {
  color: var(--gray);
  font-size: 0.88rem;
  margin-top: 4px;
}

/* ---------- macros ---------- */
.macro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
}
.macro-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--white);
}
.macro-card .macro-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--gray);
}
.macro-values {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 8px;
}
.macro-before {
  color: var(--gray);
  text-decoration: line-through;
  font-size: 0.95rem;
}
.macro-after {
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
}
.macro-unit {
  font-size: 0.78rem;
  color: var(--gray);
}
.macro-delta {
  margin-top: 6px;
  font-size: 0.85rem;
  font-weight: 700;
}
.macro-delta.good {
  color: var(--good);
}
.macro-delta.bad {
  color: var(--bad);
}
.macro-delta.flat {
  color: var(--gray);
}

/* ---------- provenance bar ---------- */
.provenance {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.prov-badge {
  background: rgba(196, 135, 122, 0.18);
  color: var(--navy);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 5px 12px;
  white-space: nowrap;
}
.prov-note {
  margin: 0;
  color: var(--gray);
  font-size: 0.8rem;
  flex: 1 1 240px;
}

/* ---------- recipe comparison ---------- */
.recipe-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.recipe-col h3 {
  font-family: var(--font-head);
  font-size: 0.95rem;
  margin: 0 0 8px;
  color: var(--navy);
}
.recipe-col.optimized h3 {
  color: var(--blush);
}
.recipe-text {
  white-space: pre-wrap;
  font-size: 0.9rem;
  background: var(--surface-tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin: 0;
  font-family: var(--font-body);
  color: var(--navy);
}

/* ---------- ingredient sources ---------- */
.edit-hint {
  font-size: 0.85rem;
  color: var(--gray);
  margin: 0 0 10px;
}
.ing-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
  font-size: 0.88rem;
}
.ing-table td {
  padding: 8px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
  color: var(--navy);
}
.ing-table td.num {
  text-align: right;
  color: var(--gray);
  white-space: nowrap;
}
.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 9px;
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.tag-db {
  background: rgba(10, 139, 148, 0.14);
  color: var(--teal);
}
.tag-est {
  background: #eef0f2;
  color: var(--gray);
}

.grams-input {
  width: 64px;
  padding: 4px 7px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font: inherit;
  font-size: 0.86rem;
  text-align: right;
  background: #fff;
  color: var(--navy);
}
.grams-input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(10, 139, 148, 0.15);
}

details {
  margin-top: 12px;
}
summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 0.92rem;
  padding: 4px 0;
  color: var(--navy);
}

.btn-link {
  background: none;
  border: none;
  color: var(--teal);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}
.btn-link:hover {
  color: var(--navy);
}

/* ---------- email gate (lead capture) ---------- */
.hidden {
  display: none;
}
/* Honeypot: parked far off-screen — humans never see it, form bots fill it. */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  height: 1px;
  width: 1px;
  opacity: 0;
}
.gate-card {
  border-left-color: var(--teal);
  margin-top: 20px;
}
.gate-title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--navy);
}
.gate-sub {
  margin: 0 0 14px;
  color: var(--gray);
  font-size: 0.92rem;
}
.gate-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.gate-row input[type="email"] {
  flex: 1 1 240px;
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--white);
}
.gate-row input[type="email"]:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(10, 139, 148, 0.15);
}
.gate-consent {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 12px;
  font-size: 0.82rem;
  color: var(--gray);
  cursor: pointer;
}
.gate-consent input {
  margin-top: 3px;
  accent-color: var(--teal);
}

/* ---------- footer ---------- */
.site-footer {
  text-align: center;
  padding: 28px 20px 44px;
}
.tagline {
  font-style: italic;
  color: var(--gray);
  font-size: 1rem;
  margin: 0 0 12px;
}
.footer-note {
  color: var(--gray);
  font-size: 0.8rem;
  max-width: 560px;
  margin: 0 auto 10px;
}
.footer-meta {
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0;
}

/* ---------- loading dots ---------- */
.loading::after {
  content: " ";
  animation: dots 1.2s steps(4, end) infinite;
}
@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}

@media (max-width: 640px) {
  .recipe-compare {
    grid-template-columns: 1fr;
  }
  .site-header h1 {
    font-size: 2rem;
  }
}