/* See /docs/building/master-prompt.md */
:root {
  --cream: #faf7f2;
  --surface: #ffffff;
  --ink: #2c2419;
  --muted: #6b5f54;
  --muted-soft: #9a8f84;
  --line: #e8dfd3;
  --field-bg: #fdfbf8;
  --terracotta: #c45d3e;
  --terracotta-deep: #a34a30;
  --terracotta-tint: #fdf0ec;
  --sage: #5b7b6a;
  --sage-deep: #456052;
  --sage-tint: #eef4f0;
  --gold: #d4a853;
  --gold-deep: #b8923f;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 16px 48px rgba(44, 36, 25, 0.08);
  --font: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { height: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
}

.noscript {
  padding: 1rem;
  background: var(--danger-bg);
  color: var(--danger);
  text-align: center;
}

/* Hero */
.hero {
  background:
    radial-gradient(ellipse 70% 55% at 0% 0%, rgba(91, 123, 106, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 50% at 100% 20%, rgba(196, 93, 62, 0.1), transparent 50%),
    var(--cream);
  padding: 1rem 1.5rem 2rem;
  border-bottom: 1px solid var(--line);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1140px;
  margin: 0 auto 1.75rem;
}

.brand {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}

.brand span { color: var(--sage); }

.nav-link {
  color: var(--sage-deep);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.88rem;
  padding: 0.45rem 1rem;
  border: 1.5px solid #c5d5cc;
  border-radius: 999px;
  background: var(--surface);
}

.hero-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.hero-copy { max-width: 640px; }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sage);
  margin: 0 0 0.5rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.lead {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--muted-soft);
}

.trust-row span::before {
  content: '✓ ';
  color: var(--sage);
  font-weight: 700;
}

.hero-art {
  width: min(220px, 40vw);
  opacity: 0.95;
}

.hero-art svg { width: 100%; height: auto; display: block; }

/* Tool section */
.tool-section {
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.5rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.tool-btn:hover {
  border-color: #c5d5cc;
  box-shadow: 0 2px 12px rgba(44, 36, 25, 0.06);
}

.tool-btn svg { flex-shrink: 0; }

.tool-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.prefs-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.prefs-panel label {
  font-weight: 600;
  font-size: 0.9rem;
}

.prefs-panel select {
  font: inherit;
  padding: 0.4rem 0.75rem;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  background: var(--field-bg);
}

.action-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1rem;
  border: none;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.12s;
}

.action-btn:hover:not(:disabled) { transform: translateY(-1px); }

.action-btn--gold {
  background: var(--gold);
  color: var(--ink);
  box-shadow: 0 4px 0 var(--gold-deep);
}

.action-btn--sage {
  background: var(--sage-deep);
  color: #fff;
  box-shadow: 0 4px 0 #34493e;
}

.action-btn--muted {
  background: #e8e2d9;
  color: var(--muted);
  cursor: not-allowed;
  position: relative;
}

.coming-badge {
  position: absolute;
  top: -8px;
  right: 8px;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--terracotta);
  color: #fff;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(320px, 1.4fr);
  gap: 1.25rem;
  align-items: start;
}

.col-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted-soft);
  margin: 0 0 0.65rem;
}

.diners-col, .items-col { min-width: 0; }

.card-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.diner-card, .item-card {
  position: relative;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: 0 2px 12px rgba(44, 36, 25, 0.04);
}

.item-card { border-top: 3px solid var(--terracotta); }

.item-card.unassigned { border-color: #f5c6c6; background: #fffbfb; }

.icon-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--muted-soft);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.icon-btn:hover { color: var(--terracotta); background: var(--terracotta-tint); }

.diner-name, .item-name {
  display: block;
  width: 100%;
  border: none;
  border-bottom: 1.5px dashed var(--line);
  background: transparent;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.2rem 0;
  color: var(--ink);
}

.diner-name:focus, .item-name:focus, .item-price:focus, .fee-amount:focus {
  outline: none;
  border-bottom-color: var(--sage);
}

.diner-meta {
  margin: 0.35rem 0 0;
  font-size: 0.82rem;
  color: var(--muted-soft);
}

.diner-total,
.item-price,
.fee-amount,
.item-line-total,
.total-row strong,
.mobile-summary strong {
  font-variant-numeric: tabular-nums;
}

.diner-total {
  margin: 0.5rem 0 0;
  text-align: right;
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--terracotta);
  letter-spacing: -0.02em;
}

.diner-extras {
  margin: 0.15rem 0 0;
  text-align: right;
  font-size: 0.78rem;
  color: var(--muted-soft);
}

.unassigned-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--terracotta);
  background: var(--terracotta-tint);
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  margin-left: 0.35rem;
  vertical-align: middle;
}

.totals-sublabel {
  margin: 0.5rem 0 0.25rem;
  font: 700 0.72rem/1 var(--font);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted-soft);
}

.tip-pcts {
  display: flex;
  gap: 0.3rem;
  margin-top: 0.35rem;
  flex-wrap: wrap;
}

.tip-pct {
  border: 1.5px solid var(--line);
  background: var(--field-bg);
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  font: 600 0.7rem var(--font);
  color: var(--muted);
  cursor: pointer;
}

.tip-pct:hover { border-color: var(--sage); }

.fee-row--tip {
  grid-template-columns: 1fr auto 6rem;
}

.mobile-summary {
  display: none;
}

.mobile-summary-btn {
  border: none;
  background: var(--sage-tint);
  color: var(--sage-deep);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
}

.mobile-summary-btn:hover { background: #dce8e0; }

.mobile-summary-label {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.item-head {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.5rem;
  align-items: center;
  padding-right: 1.5rem;
}

.item-head-top {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.item-head-top .item-name {
  flex: 1;
  min-width: 8rem;
}

.item-price {
  width: 5.5rem;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  font: inherit;
  font-weight: 700;
  color: var(--terracotta);
  text-align: right;
  background: var(--field-bg);
}

.qty-label {
  font-size: 0.75rem;
  color: var(--muted-soft);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.item-qty {
  width: 3rem;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 0.3rem;
  font: inherit;
  text-align: center;
  background: var(--field-bg);
}

.item-line-total {
  margin: 0.35rem 0 0.65rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.assign-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}

.assign-toggle {
  padding: 0.35rem 0.7rem;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--field-bg);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}

.assign-toggle.on {
  background: var(--sage-tint);
  border-color: var(--sage);
  color: var(--sage-deep);
}

.item-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.text-btn {
  border: none;
  background: none;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--sage-deep);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  padding: 0;
}

.text-btn:hover { color: var(--terracotta); }

.empty-hint {
  margin: 0;
  padding: 1.5rem;
  text-align: center;
  color: var(--muted-soft);
  font-size: 0.9rem;
  background: var(--surface);
  border: 1.5px dashed var(--line);
  border-radius: var(--radius);
}

.totals-panel {
  margin-top: 1.25rem;
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow);
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.total-row.grand {
  border-bottom: none;
  padding-top: 0.85rem;
  font-size: 1.15rem;
  font-weight: 800;
}

.total-row.grand strong { color: var(--terracotta); font-size: 1.35rem; }

.fee-row {
  display: grid;
  grid-template-columns: 1fr auto 6rem;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--line);
}

.fee-label strong { display: block; font-size: 0.9rem; }

.fee-hint {
  font-size: 0.72rem;
  color: var(--muted-soft);
}

.split-toggle {
  display: flex;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: var(--field-bg);
}

.mode-btn {
  border: none;
  background: transparent;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  color: var(--muted);
}

.mode-btn.active {
  background: var(--sage-deep);
  color: #fff;
}

.fee-amount {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  padding: 0.4rem 0.5rem;
  font: inherit;
  text-align: right;
  background: var(--field-bg);
}

.validation-alert {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.88rem;
}

.validation-alert[hidden] { display: none; }

/* Content sections */
.section {
  max-width: 1140px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}

.section h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 1.75rem;
  color: var(--muted);
  max-width: 640px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 4px 20px rgba(44, 36, 25, 0.04);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--gold);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.step-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.step-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.compare-card {
  background: var(--surface);
  border: 1.5px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.compare-card h3 {
  margin: 0 0 0.5rem;
  color: var(--sage-deep);
}

.compare-card--even h3 { color: var(--gold-deep); }

.compare-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.trust-strip {
  background: var(--sage-tint);
  border: 1px solid #c5d5cc;
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.trust-strip strong { font-size: 1.05rem; }

.trust-strip p {
  margin: 0;
  flex: 1;
  min-width: 200px;
  color: var(--muted);
  font-size: 0.92rem;
}

.lock-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--sage);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  background: var(--surface);
  padding: 0;
}

.faq summary {
  padding: 1rem 1.15rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq details[open] summary { border-bottom: 1px solid var(--line); }

.faq details p {
  margin: 0;
  padding: 1rem 1.15rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.faq .lang-nav {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.lang-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
}

.lang-nav__label {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.lang-nav__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
}

.lang-nav__links a {
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.72rem;
  font-weight: 800;
  text-decoration: none;
}

.lang-nav__links a:hover {
  color: var(--sage-deep);
  border-color: #c5d5cc;
  background: var(--sage-tint);
}

.lang-nav__links a.active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--sage), var(--sage-deep));
}

html[dir="rtl"] .lang-nav { flex-direction: row-reverse; }

.legal-note {
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  background: var(--field-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--muted);
}

.tools-block .eyebrow {
  margin-bottom: 0.35rem;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.tool-card {
  display: block;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.tool-card:hover {
  border-color: var(--sage);
  box-shadow: var(--shadow);
}

.tool-icon {
  display: block;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.tool-card strong { display: block; margin-bottom: 0.35rem; }

.tool-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.app-footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted-soft);
  font-size: 0.88rem;
}

.app-footer a { color: var(--sage-deep); }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-art { display: none; }
  .workspace { grid-template-columns: 1fr; }
  .action-row { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .fee-row { grid-template-columns: 1fr; }
  body { padding-bottom: 4.5rem; }
  .mobile-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    position: sticky;
    bottom: 0;
    margin: 1rem -1.5rem -1.5rem;
    padding: 0.85rem 1.25rem;
    background: var(--surface);
    border-top: 1.5px solid var(--line);
    box-shadow: 0 -6px 24px rgba(44, 36, 25, 0.08);
    z-index: 20;
  }
  .mobile-summary[hidden] { display: none !important; }
}

@media (min-width: 901px) {
  .mobile-summary { display: none !important; }
}

@media (max-width: 520px) {
  .item-head { grid-template-columns: 1fr; }
  .toolbar { flex-direction: column; align-items: stretch; }
}