/* use-case.css — self-contained beautiful page for use-case landings.
   Style draws from pi.dev: serif headlines, grid-paper background,
   monospace code, generous whitespace, clean tabbed code samples. */

:root {
  --uc-serif: "Fraunces", "Plantin MT Pro", Plantin, Georgia, "Times New Roman", serif;
  --uc-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --uc-paper:        #ebe7e4;
  --uc-paper-line:   rgba(37, 47, 61, 0.08);
  --uc-ink:          #252f3d;
  --uc-ink-soft:     rgba(37, 47, 61, 0.72);
  --uc-ink-mute:     rgba(37, 47, 61, 0.55);
  --uc-accent:       #6b7e9f;
  --uc-accent-strong:#475774;
  --uc-rule:         rgba(37, 47, 61, 0.16);
  --uc-card:         rgba(255, 252, 247, 0.6);
  --uc-card-strong:  rgba(255, 252, 247, 0.85);
  --uc-term-bg:      #f7f5f1;
  --uc-term-bar:     rgba(37, 47, 61, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --uc-paper:        #181a1f;
    --uc-paper-line:   rgba(220, 220, 220, 0.06);
    --uc-ink:          #e9ecf2;
    --uc-ink-soft:     rgba(233, 236, 242, 0.78);
    --uc-ink-mute:     rgba(233, 236, 242, 0.55);
    --uc-accent:       #8aa3c9;
    --uc-accent-strong:#a6bbd9;
    --uc-rule:         rgba(220, 220, 220, 0.16);
    --uc-card:         rgba(255, 255, 255, 0.03);
    --uc-card-strong:  rgba(255, 255, 255, 0.05);
    --uc-term-bg:      #23262e;
    --uc-term-bar:     rgba(255, 255, 255, 0.04);
  }
}

body.use-case {
  font-family: var(--uc-serif);
  font-size: 19px;
  line-height: 1.55;
  color: var(--uc-ink);
  background-color: var(--uc-paper);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

body.use-case a { color: var(--uc-accent-strong); text-decoration: none; border-bottom: 1px solid var(--uc-rule); }
body.use-case a:hover { color: var(--uc-ink); border-bottom-color: var(--uc-ink); }
body.use-case em { font-style: italic; }
body.use-case strong { font-weight: 600; }
body.use-case code {
  font-family: var(--uc-mono);
  font-size: 0.85em;
  background: var(--uc-card-strong);
  padding: 1px 6px;
  border-radius: 3px;
}
/* Inside terminal/tab code blocks, never paint a separate background. */
body.use-case .uc-terminal-body code,
body.use-case .uc-terminal-body pre,
body.use-case .uc-tab-pane code,
body.use-case .uc-tab-pane pre,
body.use-case pre code {
  background: transparent !important;
  padding: 0;
  border-radius: 0;
  border: 0;
  font-size: inherit;
}

.uc-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 28px 80px;
}

/* ===== HERO ===== */
.uc-eyebrow {
  font-family: var(--uc-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--uc-ink-mute);
  text-align: center;
  margin: 0 0 32px;
}
.uc-hero { padding: 60px 0 40px; }
.uc-hero-headline {
  font-family: var(--uc-serif);
  font-weight: 400;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  text-align: center;
  margin: 0 0 28px;
}
.uc-hero-headline em { font-weight: 500; }
.uc-accent { color: var(--uc-accent); }
.uc-hero-sub {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
  color: var(--uc-ink-soft);
  font-size: 20px;
  line-height: 1.55;
}
.uc-hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 28px;
}
body.use-case a.uc-btn { border-bottom: 0; }
body.use-case a.uc-btn:hover { border-bottom: 0; text-decoration: none; }
.uc-btn,
body.use-case a.uc-btn {
  font-family: var(--uc-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 12px 22px;
  border: 1px solid var(--uc-rule);
  border-radius: 2px;
  background: var(--uc-card);
  color: var(--uc-ink);
  border-bottom: 1px solid var(--uc-rule);
  transition: all 0.15s ease;
}
.uc-btn:hover {
  background: var(--uc-card-strong);
  border-color: var(--uc-ink);
  color: var(--uc-ink);
}
.uc-btn-primary,
body.use-case a.uc-btn-primary {
  background: var(--uc-ink);
  color: var(--uc-paper);
  border-color: var(--uc-ink);
}
.uc-btn-primary:hover,
body.use-case a.uc-btn-primary:hover {
  background: var(--uc-accent-strong);
  border-color: var(--uc-accent-strong);
  color: var(--uc-paper);
}

/* ===== TABS ===== */
.uc-tabs {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--uc-rule);
  border-radius: 4px;
  background: var(--uc-card);
  overflow: hidden;
}
.uc-tabs-big { max-width: 880px; margin-top: 36px; }
.uc-tabs-bar {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--uc-rule);
  background: var(--uc-term-bar);
}
.uc-tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--uc-rule);
  padding: 12px 22px;
  font-family: var(--uc-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--uc-ink-mute);
  cursor: pointer;
}
.uc-tab:hover:not([disabled]) { color: var(--uc-ink); }
.uc-tab.is-active {
  background: var(--uc-term-bg);
  color: var(--uc-ink);
  box-shadow: inset 0 -2px 0 var(--uc-ink);
}
.uc-tab[disabled] { opacity: 0.45; cursor: not-allowed; }
.uc-tab-soon { font-style: italic; }
.uc-tabs-body { background: var(--uc-term-bg); }
.uc-tab-pane {
  display: none;
  margin: 0;
  padding: 22px 24px;
  font-family: var(--uc-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--uc-ink);
  overflow-x: auto;
  background: transparent;
  border: 0;
  border-radius: 0;
}
.uc-tab-pane.is-active { display: block; }
.uc-tab-pane code { background: transparent; padding: 0; font-size: inherit; }

/* ===== SECTIONS ===== */
.uc-section { padding: 80px 0; border-top: 1px solid var(--uc-rule); }
.uc-h2 {
  font-family: var(--uc-serif);
  font-weight: 400;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
}
.uc-h2 em { font-weight: 500; }
.uc-h2-center { text-align: center; max-width: 760px; margin: 0 auto 18px; }
.uc-lede {
  max-width: 720px;
  margin: 0 auto 40px;
  text-align: center;
  color: var(--uc-ink-soft);
  font-size: 18px;
}

.uc-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.uc-split-rev .uc-split-text { order: 2; }
.uc-split-rev .uc-terminal { order: 1; }
.uc-split-text p { margin: 0 0 16px; color: var(--uc-ink-soft); font-size: 18px; }
.uc-bullets { list-style: none; margin: 12px 0 0; padding: 0; }
.uc-bullets li {
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid var(--uc-rule);
  position: relative;
  color: var(--uc-ink-soft);
}
.uc-bullets li:last-child { border-bottom: 0; }
.uc-bullets li::before {
  content: "❦";
  position: absolute;
  left: 0;
  top: 10px;
  color: var(--uc-accent);
}

/* ===== TERMINAL CARD ===== */
.uc-terminal {
  border: 1px solid var(--uc-rule);
  border-radius: 4px;
  background: var(--uc-term-bg);
  overflow: hidden;
  box-shadow: 0 1px 0 var(--uc-rule), 0 24px 60px -40px rgba(37,47,61,0.25);
}
.uc-terminal-bar {
  font-family: var(--uc-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--uc-ink-mute);
  padding: 10px 16px;
  border-bottom: 1px solid var(--uc-rule);
  background: var(--uc-term-bar);
}
.uc-terminal-body {
  margin: 0;
  padding: 22px 24px;
  font-family: var(--uc-mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--uc-ink);
  background: transparent;
  border: 0;
  border-radius: 0;
  overflow-x: auto;
}
.uc-terminal-body code { background: transparent; padding: 0; font-size: inherit; }

/* terminal syntax tints */
.tc-c { color: var(--uc-ink-mute); font-style: italic; }   /* comment */
.tc-p { color: var(--uc-accent); }                          /* prompt */
.tc-s { color: #a35a2a; }                                   /* string */
.tc-k { color: var(--uc-accent-strong); font-weight: 500; } /* keyword */
.tc-f { color: var(--uc-ink); font-weight: 500; }           /* function */
.tc-n { color: #2f7d4a; }                                   /* number */
.tc-o { color: var(--uc-ink); }                             /* output */
@media (prefers-color-scheme: dark) {
  .tc-s { color: #d6a06b; }
  .tc-n { color: #8fcfa3; }
}

.uc-footnote {
  max-width: 720px;
  margin: 24px auto 0;
  color: var(--uc-ink-mute);
  font-size: 15px;
  font-style: italic;
}
.uc-footnote-center { text-align: center; }

/* ===== FEATURE GRID ===== */
.uc-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.uc-feature {
  border: 1px solid var(--uc-rule);
  border-radius: 4px;
  background: var(--uc-term-bg);
  padding: 22px 22px 24px;
}
.uc-feature h3 {
  font-family: var(--uc-serif);
  font-weight: 500;
  font-size: 22px;
  margin: 0 0 8px;
  letter-spacing: -0.005em;
}
.uc-feature p {
  color: var(--uc-ink-soft);
  font-size: 16px;
  margin: 0;
}
@media (max-width: 900px) {
  .uc-feature-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .uc-feature-grid { grid-template-columns: 1fr; }
}

/* ===== PRICING ===== */
.uc-section-pricing { padding-top: 90px; }
.uc-price-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}
.uc-price-card {
  border: 1px solid var(--uc-rule);
  border-radius: 4px;
  background: var(--uc-card);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}
.uc-price-card-alt { background: var(--uc-card-strong); }
.uc-price-card-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.uc-price-card h3 {
  font-family: var(--uc-serif);
  font-weight: 500;
  font-size: 32px;
  margin: 0;
}
.uc-price-tag {
  font-family: var(--uc-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--uc-ink-mute);
  margin: 0;
}
.uc-price-body { color: var(--uc-ink-soft); margin: 0 0 18px; font-size: 17px; }
.uc-price-features { list-style: none; margin: 0 0 22px; padding: 0; }
.uc-price-features li {
  padding: 8px 0;
  border-bottom: 1px solid var(--uc-rule);
  font-family: var(--uc-mono);
  font-size: 13px;
  color: var(--uc-ink-soft);
}
.uc-price-features li:last-child { border-bottom: 0; }
.uc-price-features strong { color: var(--uc-ink); font-weight: 600; }
.uc-price-foot { margin-top: auto; font-family: var(--uc-mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; }
.uc-price-foot a { border-bottom: 0; }

/* ===== CLOSING ===== */
.uc-section-closing { padding: 100px 0 40px; text-align: center; border-top: 1px solid var(--uc-rule); }
.uc-closing {
  font-family: var(--uc-serif);
  font-weight: 400;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 36px;
}
.uc-closing em { font-weight: 500; color: var(--uc-accent); }

/* ===== TOPBAR / FOOTER ===== */
/* Keep the topbar identical to other pages: do not override it. */
body.use-case .topbar,
body.use-case .topbar * {
  font-family: var(--font-mono);
}
body.use-case .topbar a:not(.topbar-login) {
  border-bottom: 0;
}
body.use-case .topbar a:not(.topbar-login):hover {
  border-bottom: 0;
  text-decoration: none;
}
body.use-case footer {
  margin-top: 60px;
  padding: 28px 20px;
  text-align: center;
  color: var(--uc-ink-mute);
  font-family: var(--uc-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-top: 1px solid var(--uc-rule);
}
body.use-case footer a { color: var(--uc-ink-soft); border-bottom: 0; }
body.use-case footer a:hover { color: var(--uc-ink); }
body.use-case footer span { margin: 0 10px; opacity: 0.5; }

/* ===== RESPONSIVE ===== */
@media (max-width: 800px) {
  .uc-main { padding: 36px 18px 60px; }
  .uc-hero { padding: 32px 0 20px; }
  .uc-hero-sub { font-size: 17px; }
  .uc-split { grid-template-columns: 1fr; gap: 32px; }
  .uc-split-rev .uc-split-text { order: 0; }
  .uc-split-rev .uc-terminal { order: 0; }
  .uc-price-grid { grid-template-columns: 1fr; }
  .uc-section { padding: 56px 0; }
  .uc-tab { padding: 10px 14px; letter-spacing: 0.12em; }
  .uc-tab-pane { padding: 18px 16px; font-size: 13px; }
  .uc-terminal-body { padding: 18px 16px; font-size: 12.5px; }
}