/* PeptSense UI system
   Theme constraints: docs/THEME.md
   Page grammar:     docs/DESIGN_GUIDE.md
   Light + dark via data-theme on <html>. Print/PDF always light. */

:root {
  --ink: #0f172a;
  --body: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --surface: #ffffff;
  --page: #f8fafc;
  --page-deep: #f1f5f9;

  --brand: #1d4ed8;
  --brand-hover: #1e40af;
  --brand-tint: #eff6ff;
  --brand-ring: rgba(29, 78, 216, 0.22);
  --on-brand: #ffffff;
  --row-hover: rgba(239, 246, 255, 0.55);

  --status-compoundable: #047857;
  --status-compoundable-bg: #ecfdf5;
  --status-compoundable-border: #a7f3d0;
  --status-restricted: #b91c1c;
  --status-restricted-bg: #fef2f2;
  --status-restricted-border: #fecaca;
  --status-under-review: #b45309;
  --status-under-review-bg: #fffbeb;
  --status-under-review-border: #fde68a;
  --status-unclear: #475569;
  --status-unclear-bg: #f1f5f9;
  --status-unclear-border: #e2e8f0;

  --radius: 6px;
  --radius-sm: 4px;

  --font-sans: "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", "Palatino Linotype", Palatino, serif;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --max-content: 72rem;
  --max-prose: 40rem;
  --max-auth: 26rem;
  --max-answer: 44rem;

  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 4.25rem;
  --base: 1.0625rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --theme-color: #f8fafc;
}

/* Dark: same clinical system, inverted surfaces. Brand slightly brighter for contrast. */
html[data-theme="dark"] {
  --ink: #f1f5f9;
  --body: #cbd5e1;
  --muted: #94a3b8;
  --border: #334155;
  --border-strong: #475569;
  --surface: #1e293b;
  --page: #0f172a;
  --page-deep: #162032;

  --brand: #3b82f6;
  --brand-hover: #60a5fa;
  --brand-tint: #172554;
  --brand-ring: rgba(59, 130, 246, 0.35);
  --on-brand: #ffffff;
  --row-hover: rgba(59, 130, 246, 0.14);

  --status-compoundable: #34d399;
  --status-compoundable-bg: #064e3b;
  --status-compoundable-border: #047857;
  --status-restricted: #fca5a5;
  --status-restricted-bg: #7f1d1d;
  --status-restricted-border: #991b1b;
  --status-under-review: #fbbf24;
  --status-under-review-bg: #78350f;
  --status-under-review-border: #b45309;
  --status-unclear: #94a3b8;
  --status-unclear-bg: #1e293b;
  --status-unclear-border: #475569;

  --theme-color: #0f172a;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
  overflow-x: clip;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--base);
  color: var(--body);
  background-color: var(--page);
  display: flex;
  flex-direction: column;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 150ms ease;
}

a:hover {
  color: var(--brand-hover);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ——— Shell chrome ——— */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  padding-top: env(safe-area-inset-top, 0);
}

.site-header__inner,
.site-footer__inner,
.page {
  width: min(var(--max-content), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  column-gap: var(--space-5);
  row-gap: var(--space-3);
  min-height: var(--header-h);
  padding-block: var(--space-3);
}

.site-header__bar {
  display: contents;
}

.site-header__tools {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  grid-column: 3;
  grid-row: 1;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  font-size: 1.3125rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1;
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
}

.brand:hover {
  text-decoration: none;
  color: var(--ink);
}

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

.brand__mark {
  display: inline-flex;
  width: 1.5rem;
  height: 1.5rem;
  margin-right: 0.55rem;
  border: 1.5px solid var(--brand);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--brand);
  vertical-align: middle;
  position: relative;
  top: 0.1rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  align-items: center;
  font-size: 0.9375rem;
  font-weight: 500;
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  min-width: 0;
}

.nav a:not(.btn) {
  color: var(--muted);
  text-decoration: none;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:not(.btn):hover {
  color: var(--ink);
  text-decoration: none;
}

.nav a:not(.btn)[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--brand);
}

/* Theme toggle — quiet icon control in header chrome */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.theme-toggle:hover {
  background: var(--page-deep);
  color: var(--ink);
}

.theme-toggle__icon {
  display: none;
  width: 1.05rem;
  height: 1.05rem;
}

.theme-toggle__icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

html:not([data-theme="dark"]) .theme-toggle__icon--to-dark,
html[data-theme="dark"] .theme-toggle__icon--to-light {
  display: block;
}

/* ——— Buttons ——— */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

a.btn,
a.btn:link,
a.btn:visited,
a.btn:hover,
a.btn:active {
  text-decoration: none;
}

.btn:hover,
a.btn:hover {
  background: var(--page-deep);
  border-color: var(--border-strong);
  color: var(--ink);
}

.btn-primary,
a.btn-primary,
a.btn-primary:link,
a.btn-primary:visited {
  background: var(--brand);
  border-color: var(--brand);
  color: var(--on-brand);
}

.btn-primary:hover,
a.btn-primary:hover,
a.btn-primary:active {
  background: var(--brand-hover);
  border-color: var(--brand-hover);
  color: var(--on-brand);
}

.btn-sm {
  min-height: 2.25rem;
  padding: 0.45rem 0.95rem;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* ——— Page frame ——— */

.page {
  padding: var(--space-7) 0 var(--space-8);
  flex: 1;
  width: min(var(--max-content), calc(100% - (var(--gutter) * 2)));
}

.page--auth {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: min(var(--max-auth), calc(100% - (var(--gutter) * 2)));
  padding-block: var(--space-8);
}

.page--narrow {
  width: min(var(--max-auth), calc(100% - (var(--gutter) * 2)));
}

.page-header {
  margin-bottom: var(--space-6);
  max-width: var(--max-prose);
}

.page-header .lede {
  margin-bottom: 0;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--body);
  font-size: 0.8125rem;
  font-weight: 500;
}

.meta-chip strong {
  color: var(--ink);
  font-weight: 600;
}

/* ——— Type ——— */

.eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: var(--space-3);
}

h1,
h2,
h3 {
  color: var(--ink);
  font-weight: 650;
}

h1 {
  font-size: clamp(1.75rem, 2.8vw, 2.25rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-3);
}

h2 {
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

.marketing-headline {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  letter-spacing: -0.035em;
  line-height: 1.06;
  max-width: 18ch;
  margin-bottom: var(--space-5);
  color: var(--ink);
}

.lede {
  color: var(--body);
  max-width: var(--max-prose);
  margin-bottom: var(--space-5);
  font-size: 1.125rem;
  line-height: 1.55;
}

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.text-ink { color: var(--ink); }

/* ——— Marketing hero ——— */

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(var(--max-content), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
  padding-block: var(--space-8);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
  align-items: center;
  animation: hero-enter 480ms var(--ease) both;
}

@media (min-width: 960px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--space-8);
    padding-block: var(--space-9);
  }
}

.hero__copy {
  max-width: 36rem;
}

.hero__brand-line {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: var(--space-5);
}

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

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.hero .lede {
  font-size: 1.2rem;
  max-width: 32rem;
  margin-bottom: 0;
}

/* Decorative product specimen — fills the right half so hero isn't left-stuck */
.hero-specimen {
  background: var(--page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
  position: relative;
}

.hero-specimen__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.hero-specimen__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
}

.hero-specimen__meta {
  font-size: 0.8125rem;
  color: var(--muted);
}

.hero-specimen__query {
  font-size: 1.125rem;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.hero-specimen__facts {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.hero-specimen__fact {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: var(--space-3);
  font-size: 0.875rem;
}

.hero-specimen__fact dt {
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.75rem;
}

.hero-specimen__fact dd {
  color: var(--ink);
  margin: 0;
}

.hero-specimen__note {
  margin-top: var(--space-5);
  font-size: 0.75rem;
  color: var(--muted);
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__inner {
    animation: none;
  }
}

/* ——— Marketing sections ——— */

.section-stack {
  background: var(--page);
  border-top: 1px solid var(--border);
}

.section-stack .page {
  padding-top: 0;
  padding-bottom: 0;
}

.section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--border);
}

.section:last-of-type {
  border-bottom: none;
}

@media (min-width: 800px) {
  .section {
    grid-template-columns: 11rem minmax(0, 1fr);
    gap: var(--space-7);
    align-items: start;
    padding-block: var(--space-9);
  }
}

@media (min-width: 1100px) {
  .section.section--visual {
    grid-template-columns: 11rem minmax(0, 1fr) minmax(16rem, 22rem);
    align-items: center;
  }
}

.section__index {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand);
  padding-top: 0.35rem;
}

.section__body {
  max-width: 40rem;
}

.section__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.65rem, 2.8vw, 2.15rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--ink);
  max-width: 22ch;
}

.section__lede {
  max-width: var(--max-prose);
  color: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
}

/* Clinical photography — marketing sections only; not a card surface */
.section__media {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--page-deep);
  aspect-ratio: 3 / 2;
}

.section__media picture,
.section__media img {
  display: block;
  width: 100%;
  height: 100%;
}

.section__media img {
  object-fit: cover;
  object-position: center;
}

@media (min-width: 800px) and (max-width: 1099.98px) {
  .section.section--visual .section__media {
    grid-column: 2;
    max-width: 28rem;
  }
}

@media (max-width: 799.98px) {
  .section.section--visual .section__media {
    order: 3;
    max-width: 32rem;
  }
}

/* ——— Surfaces (interactive only) ——— */

.surface {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-5);
}

.surface--flush {
  padding: 0;
  overflow: hidden;
}

.surface--answer {
  max-width: var(--max-answer);
  padding: var(--space-6);
}

.surface + .surface {
  margin-top: var(--space-4);
}

/* Equal-height grids must not inherit stacked-surface spacing */
.equal-cards > .surface + .surface {
  margin-top: 0;
}

.workspace {
  display: grid;
  gap: var(--space-5);
}

@media (min-width: 960px) {
  .workspace--split {
    grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
    align-items: start;
  }
}

/* ——— Toolbar ——— */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
}

.toolbar__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 12rem;
  flex: 1;
}

.toolbar__field label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.toolbar__field select,
.toolbar__field input {
  min-height: 2.5rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
}

.toolbar__actions {
  display: flex;
  gap: var(--space-2);
  margin-left: auto;
}

/* ——— Tables ——— */

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

table.data th,
table.data td {
  text-align: left;
  padding: 0.95rem 1.1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

table.data th {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--page);
  white-space: nowrap;
}

table.data tbody tr:hover td {
  background: var(--row-hover);
}

table.data tbody tr:last-child td {
  border-bottom: none;
}

table.data td a {
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
}

table.data td a:hover {
  color: var(--brand);
  text-decoration: underline;
}

/* ——— Status badges ——— */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.6rem 0.28rem 0.45rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.3;
  white-space: nowrap;
}

.status-badge__icon {
  display: inline-flex;
  width: 0.95rem;
  height: 0.95rem;
  flex-shrink: 0;
}

.status-badge__icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.status-badge--compoundable {
  color: var(--status-compoundable);
  background: var(--status-compoundable-bg);
  border-color: var(--status-compoundable-border);
}

.status-badge--restricted {
  color: var(--status-restricted);
  background: var(--status-restricted-bg);
  border-color: var(--status-restricted-border);
}

.status-badge--under_review {
  color: var(--status-under-review);
  background: var(--status-under-review-bg);
  border-color: var(--status-under-review-border);
}

.status-badge--unclear {
  color: var(--status-unclear);
  background: var(--status-unclear-bg);
  border-color: var(--status-unclear-border);
}

/* ——— Forms ——— */

form.stack {
  display: flex;
  flex-direction: column;
}

form.stack label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: var(--space-2);
}

form.stack select,
form.stack input[type="text"],
form.stack input[type="email"],
form.stack input[type="password"] {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font: inherit;
  margin-bottom: var(--space-4);
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

form.stack select:hover,
form.stack input:hover {
  border-color: var(--border-strong);
}

form.stack select:focus,
form.stack input[type="text"]:focus,
form.stack input[type="email"]:focus,
form.stack input[type="password"]:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}

form.stack .check-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-5);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--body);
  cursor: pointer;
}

form.stack .check-row input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  flex-shrink: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease, box-shadow 150ms ease;
}

form.stack .check-row input[type="checkbox"]:hover {
  border-color: var(--brand);
}

form.stack .check-row input[type="checkbox"]:focus-visible {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-ring);
}

form.stack .check-row input[type="checkbox"]:checked {
  background-color: var(--brand);
  border-color: var(--brand);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23fff' stroke-width='2.25' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3.5 8.5l3 3 6-7'/%3E%3C/svg%3E");
  background-size: 0.75rem 0.75rem;
  background-position: center;
  background-repeat: no-repeat;
}

form.stack .errorlist {
  list-style: none;
  color: var(--status-restricted);
  font-size: 0.875rem;
  margin: -0.5rem 0 var(--space-3);
}

.auth-footer {
  margin-top: var(--space-5);
  font-size: 0.9375rem;
  color: var(--muted);
  text-align: center;
}

/* ——— Answer card ——— */

.answer-card__status {
  margin-bottom: var(--space-4);
}

.answer-card__title {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.answer-card__title h2 {
  font-size: 1.5rem;
  margin: 0;
}

.answer-card__body {
  font-size: 1.0625rem;
  margin-bottom: var(--space-5);
}

.def-list {
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: var(--space-3) var(--space-4);
  padding: var(--space-5) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.def-list dt {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding-top: 0.15rem;
}

.def-list dd {
  color: var(--ink);
  margin: 0;
}

/* ——— Ops console ——— */

.ops-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0 0 var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.ops-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}

.ops-nav a:hover {
  color: var(--brand);
}

.ops-nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.ops-focus {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  margin: 0 0 var(--space-5);
}

.ops-focus a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.ops-focus a:hover {
  color: var(--brand);
}

.ops-focus a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--brand);
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
  gap: 1px;
  margin-bottom: var(--space-6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--border);
  overflow: hidden;
}

.stat-strip__item {
  background: var(--surface);
  padding: var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-strip__value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.1;
}

.stat-strip__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-strip__item--warn .stat-strip__value {
  color: var(--status-under-review);
}

.ops-footnote {
  margin: calc(-1 * var(--space-4)) 0 var(--space-6);
}

.ops-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
  align-items: stretch;
}

@media (min-width: 860px) {
  .ops-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Full-width ops blocks (not in a grid) keep bottom rhythm */
.page--ops > .surface {
  margin-bottom: var(--space-5);
}

/* Sibling surfaces inside a row must share height — no stacked margins */
.ops-grid > .surface,
.ops-grid > .surface.surface--flush {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  margin-top: 0;
  margin-bottom: 0;
}

.ops-grid > .surface + .surface {
  margin-top: 0;
}

.ops-grid .ops-section-head {
  flex-shrink: 0;
}

.ops-grid .table-wrap {
  flex: 1 1 auto;
  min-height: 0;
}

.ops-grid .empty-state {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 8rem;
}

.ops-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}

.ops-section-head h2 {
  margin: 0;
  font-size: 1rem;
}

.page--ops .surface > .def-list {
  margin: 0;
  padding: var(--space-5);
  border: 0;
}

.page--ops .surface > h2 {
  margin: 0 0 var(--space-4);
  font-size: 1rem;
}

.text-warn {
  color: var(--status-under-review);
  font-weight: 600;
}

.text-danger {
  color: var(--status-restricted);
  font-weight: 600;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8125rem;
}

.muted.small,
.small.muted {
  color: var(--muted);
  font-size: 0.8125rem;
}

.toolbar__field input[type="text"] {
  min-width: 12rem;
}

.ops-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin: var(--space-5) 0;
}

/* ——— Empty / flash / footer ——— */

.empty-state {
  padding: var(--space-7) var(--space-5);
  text-align: center;
  color: var(--muted);
}

.empty-state p {
  margin-bottom: var(--space-4);
}

.flash {
  list-style: none;
  margin: var(--space-4) auto 0;
  width: min(var(--max-content), calc(100% - (var(--gutter) * 2)));
}

.flash li {
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin-bottom: var(--space-2);
  font-size: 0.9375rem;
  color: var(--ink);
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: var(--space-5) 0;
  padding-bottom: calc(var(--space-5) + env(safe-area-inset-bottom, 0));
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: auto;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  justify-content: space-between;
}

.disclaimer {
  margin-top: var(--space-7);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--muted);
  max-width: 48rem;
}

/* ——— Equal card rows (site-wide) ———
   Use on any multi-column surface grid so cards share height,
   internal rows align, and CTAs sit on one baseline. */

.equal-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: stretch;
}

.equal-cards > .surface {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 100%;
  margin-top: 0;
}

.equal-cards > .surface > .btn:last-child,
.equal-cards > .surface > .btn-primary:last-child {
  margin-top: auto;
  align-self: stretch;
  width: 100%;
  text-align: center;
}

/* ——— Pricing ——— */

.pricing-grid {
  margin-bottom: var(--space-7);
}

@media (min-width: 900px) {
  .pricing-grid.equal-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.pricing-plan {
  gap: var(--space-3);
}

.pricing-plan[data-recommended="true"] {
  border-color: var(--brand);
  background: var(--brand-tint);
}

.pricing-plan__flag {
  margin: 0;
  min-height: 1.125rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
}

.pricing-plan__flag:empty {
  visibility: hidden;
}

.pricing-plan__name {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.pricing-plan__price {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.pricing-plan__price--compact {
  margin-bottom: var(--space-2);
}

.pricing-plan__amount {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1;
}

.pricing-plan__period {
  font-size: 0.9375rem;
  color: var(--muted);
}

.pricing-plan__who {
  margin: 0;
  color: var(--body);
  font-size: 0.9375rem;
  min-height: 3.1em; /* two lines — keeps price→list rhythm aligned */
}

.pricing-plan__list {
  margin: var(--space-2) 0 var(--space-3);
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
  flex: 1 1 auto;
  align-content: start;
}

.pricing-plan__list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--body);
  font-size: 0.9375rem;
}

.pricing-plan__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 1px;
  background: var(--brand);
}

.pricing-compare {
  border-bottom: none;
  padding-bottom: var(--space-4);
}

.pricing-table-wrap {
  margin-bottom: var(--space-7);
}

.pricing-table th[scope="row"] {
  font-weight: 600;
  color: var(--ink);
  background: transparent;
}

.pricing-secondary {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-7);
  padding-block: var(--space-5);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

@media (min-width: 800px) {
  .pricing-secondary {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-7);
  }
}

.pricing-secondary__item h2 {
  margin: 0 0 var(--space-2);
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.pricing-secondary__item p {
  margin: 0 0 var(--space-4);
  max-width: 36rem;
  color: var(--body);
}

.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-0 { margin-bottom: 0; }

/* ——— Responsive ———
   Fluid gutters + min-width grids handle most tablet layouts.
   Below: toolbar/stack tweaks (≤959px) and phone polish (≤720px). */

@media (max-width: 959px) {
  :root {
    --header-h: auto;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand tools"
      "nav nav";
    align-items: center;
    row-gap: var(--space-2);
    padding-block: var(--space-3) var(--space-2);
  }

  .brand {
    grid-area: brand;
  }

  .site-header__tools {
    grid-area: tools;
  }

  .nav {
    grid-area: nav;
    justify-self: stretch;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: var(--space-4);
    padding-block: var(--space-1);
    scrollbar-width: none;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav a:not(.btn) {
    flex-shrink: 0;
    white-space: nowrap;
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    padding-inline: 0.1rem;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar__field {
    width: 100%;
    min-width: 0;
  }

  .toolbar__actions {
    margin-left: 0;
    width: 100%;
  }

  .toolbar__actions .btn {
    flex: 1;
  }

  .ops-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .ops-section-head .btn {
    align-self: stretch;
    text-align: center;
  }

  .ops-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    gap: var(--space-4);
    padding-bottom: var(--space-1);
    scrollbar-width: none;
  }

  .ops-nav::-webkit-scrollbar {
    display: none;
  }

  .ops-nav a {
    flex-shrink: 0;
    white-space: nowrap;
    min-height: 2.5rem;
    display: inline-flex;
    align-items: center;
  }
}

@media (max-width: 720px) {
  .site-header__tools .btn-sm {
    min-height: 2.25rem;
    padding-inline: 0.75rem;
    white-space: nowrap;
  }

  .page {
    padding-block: var(--space-6) var(--space-7);
  }

  .page--auth {
    padding-block: var(--space-7);
  }

  .hero {
    min-height: auto;
  }

  .hero__inner {
    padding-block: var(--space-7);
  }

  .section {
    padding-block: var(--space-7);
  }

  .surface {
    padding: var(--space-4);
  }

  .surface--answer {
    padding: var(--space-5);
  }

  .toolbar {
    padding: var(--space-4);
  }

  .marketing-headline {
    max-width: none;
    font-size: clamp(2rem, 9vw, 2.75rem);
  }

  .section__title {
    max-width: none;
  }

  .def-list {
    grid-template-columns: 1fr;
    gap: var(--space-1) 0;
  }

  .def-list dt {
    margin-top: var(--space-3);
  }

  .def-list dt:first-child {
    margin-top: 0;
  }

  .hero-specimen__fact {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
    min-width: min(100%, 10rem);
  }

  .stat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .ops-pagination {
    flex-wrap: wrap;
    justify-content: center;
  }

  table.data th,
  table.data td {
    padding: 0.75rem 0.85rem;
  }
}
