:root {
  color-scheme: light;
  --bg: #f4f7f8;
  --surface: #ffffff;
  --surface-2: #eef3f5;
  --text: #172126;
  --muted: #5f6f77;
  --line: #d8e1e5;
  --accent: #0e6f7c;
  --accent-strong: #0a5661;
  --success: #0d7c4a;
  --error: #9f2a2a;
  --shadow: 0 10px 30px rgba(23, 33, 38, 0.08);
  --radius: 18px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(14, 111, 124, 0.08), transparent 36%),
    linear-gradient(180deg, #f8fbfc 0%, var(--bg) 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(244, 247, 248, 0.86);
  border-bottom: 1px solid rgba(216, 225, 229, 0.8);
  box-shadow: 0 8px 24px rgba(23, 33, 38, 0.05);
}

.site-header__inner,
.site-header__nav-row,
.site-main {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0 0.7rem;
}

.site-header__nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 0 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.brand__logo {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__title {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand__subtitle,
.eyebrow,
.section-header p,
.lead,
.card__meta,
.page-section__text,
.empty-state,
.ui-message {
  color: var(--muted);
}

.brand__subtitle {
  font-size: 0.92rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  min-width: 0;
  flex: 1 1 auto;
}

.site-nav a {
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  color: var(--muted);
}

.site-nav__utility {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 0.5rem 0.8rem;
  background: rgba(14, 111, 124, 0.08);
  border: 1px solid rgba(14, 111, 124, 0.18);
  color: var(--accent-strong);
  font-size: 0.92rem;
  font-weight: 600;
}

.site-nav__utility:hover {
  background: rgba(14, 111, 124, 0.12);
  color: var(--accent);
}

.site-nav a[aria-current="page"] {
  background: var(--surface);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--line);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.65rem 0.9rem;
}

.global-banner {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto 0.9rem;
  background: linear-gradient(135deg, rgba(14, 111, 124, 0.12), rgba(14, 111, 124, 0.04));
  border: 1px solid rgba(14, 111, 124, 0.22);
  color: var(--accent-strong);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.global-banner--flash {
  background: linear-gradient(135deg, rgba(159, 42, 42, 0.22), rgba(159, 42, 42, 0.08));
  border-color: rgba(159, 42, 42, 0.45);
  color: #7b1d1d;
  box-shadow: 0 0 0 4px rgba(159, 42, 42, 0.12);
}

.site-main {
  padding: 0.9rem 0 3rem;
}

.page-header,
.content-section,
.page-content {
  margin-top: 1rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.75rem;
  font-size: clamp(2.1rem, 5vw, 3.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.lead {
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 62ch;
}

.page-header {
  padding: 1rem 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-header--home {
  padding-bottom: 1rem;
}

.page-header .lead {
  max-width: 68ch;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 44px;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  line-height: 1.1;
  cursor: pointer;
}

.button {
  background: var(--accent);
  color: #fff;
}

.button:hover {
  background: var(--accent-strong);
}

.button-secondary {
  background: rgba(236, 244, 246, 0.9);
  border-color: rgba(14, 111, 124, 0.16);
  color: var(--accent-strong);
}

.button-secondary:hover {
  background: rgba(226, 237, 240, 0.98);
}

.prompt-card .button-secondary {
  background: rgba(236, 244, 246, 0.95);
  border-color: rgba(14, 111, 124, 0.14);
  color: var(--accent-strong);
}

.prompt-card .button-secondary:hover {
  background: rgba(226, 237, 240, 1);
}

.content-section,
.page-header,
.toolbar,
.page-content {
  background: transparent;
}

.section-header {
  margin-bottom: 1rem;
}

.section-header h2,
.page-header h1 {
  margin-bottom: 0.35rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.03em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  align-items: start;
}

.card,
.prompt-card,
.page-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  padding: 1rem;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field span {
  font-size: 0.92rem;
  color: var(--muted);
}

.field input,
.field select {
  width: 100%;
  min-height: 46px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.75rem 0.9rem;
}

.field input:focus,
.field select:focus,
.button:focus,
.button-secondary:focus,
.nav-toggle:focus,
.site-nav a:focus {
  outline: 2px solid rgba(14, 111, 124, 0.24);
  outline-offset: 2px;
}

.prompt-card {
  overflow: hidden;
  align-self: start;
}

.prompt-card__inner {
  padding: 1rem;
  display: grid;
  gap: 0.85rem;
}

.prompt-card__top {
  display: grid;
  gap: 0.4rem;
}

.prompt-card__title {
  margin: 0;
  font-size: 1.12rem;
}

.prompt-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.15rem 0.65rem;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--accent-strong);
  font-size: 0.85rem;
}

.prompt-card__description {
  margin: 0;
  line-height: 1.6;
  color: var(--muted);
}

.prompt-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.prompt-card__prompt {
  border-top: 1px solid var(--line);
  padding-top: 0.9rem;
}

.prompt-card__prompt[hidden] {
  display: none;
}

.prompt-card__details {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 0.9rem;
}

.prompt-card__detail {
  display: grid;
  gap: 0.2rem;
}

.prompt-card__detail-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 700;
}

.prompt-card__detail-value {
  line-height: 1.6;
}

.prompt-card__prompt pre {
  margin: 0;
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #f7fafb;
  border-radius: 14px;
  padding: 0.9rem;
  border: 1px solid var(--line);
  line-height: 1.6;
  margin-bottom: 0.65rem;
}

.ui-message {
  margin-bottom: 1rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: #fff;
}

.ui-message--error {
  border-color: rgba(159, 42, 42, 0.25);
  background: rgba(159, 42, 42, 0.08);
  color: var(--error);
}

.ui-message--success {
  border-color: rgba(13, 124, 74, 0.22);
  background: rgba(13, 124, 74, 0.08);
  color: var(--success);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 1.25rem;
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

.page-content {
  display: grid;
  gap: 1rem;
}

.page-section {
  padding: 1rem;
}

.page-section h2 {
  margin-bottom: 0.65rem;
  font-size: 1.3rem;
}

.page-section p,
.page-section li {
  line-height: 1.7;
}

.page-meta {
  margin: 0.9rem 0 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.page-section ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.page-section li + li {
  margin-top: 0.35rem;
}

.page-index-card {
  display: grid;
  gap: 0.8rem;
}

.page-index-card h2 {
  margin-bottom: 0;
  font-size: 1.2rem;
}

.page-index-link {
  color: var(--accent);
  font-weight: 600;
}

.page-index-link:hover {
  color: var(--accent-strong);
}

@media (max-width: 760px) {
  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-header__nav-row {
    padding-bottom: 0.95rem;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.35rem;
    gap: 0.35rem;
    order: 3;
    flex: 1 0 100%;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 0.8rem 0.95rem;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--line);
  }

  .site-nav__utility {
    margin-left: auto;
    background: rgba(14, 111, 124, 0.08);
    border-color: rgba(14, 111, 124, 0.18);
    color: var(--accent-strong);
    padding: 0.75rem 0.95rem;
  }

  .page-header {
    padding: 0.9rem;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }
}