/* tdmcp.com marketing site
   Reskinned to feel native to truedialog.com:
     - Lato across the board (their typeface)
     - TD's orange palette (#ff4d00 primary, #fd7900 accent)
     - Cream base (#fafaf6) and warm gray text (#606263)
     - JetBrains Mono retained for code (devs read it better)
   Layout is the same numbered-document rhythm as before; only the
   surface treatment changes.
*/

/* ── tokens (match truedialog.com's main.min.css palette) ─────────── */

:root {
  /* surfaces */
  --paper:        #fafaf6;
  --paper-warm:   #f3efe6;
  --paper-deep:   #ebe6d7;

  /* type */
  --ink:          #1d1f20;
  --ink-soft:     #4a4a4a;
  --ink-faded:    #6f7376;

  /* rules / borders */
  --rule:         #d8d3c2;
  --rule-soft:    #e8e3d2;

  /* TD brand orange (matches --secondary / --accent on truedialog.com) */
  --accent:       #ff4d00;
  --accent-warm:  #fd7900;
  --accent-light: #ffb259;
  --accent-pale:  #ffe9d6;

  /* layout */
  --measure:      72ch;
  --gutter:       clamp(1.25rem, 4vw, 3.25rem);

  /* fonts */
  --t-sans:       'Lato', ui-sans-serif, system-ui, sans-serif;
  --t-mono:       'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
}

/* ── reset + base ────────────────────────────────────────────────── */

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

html {
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--t-sans);
  font-size: 17px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

main { flex: 1; }

/* ── typography ───────────────────────────────────────────────────── */

h1, h2, h3, h4 {
  font-family: var(--t-sans);
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.02em;
}
h1 {
  font-size: clamp(2.6rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
}
h2 {
  font-size: clamp(1.85rem, 3.6vw, 2.85rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
}
h3 {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}
h4 {
  font-family: var(--t-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-faded);
}

p { margin: 0 0 1em; }
strong { font-weight: 700; color: var(--ink); }

a {
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  padding-bottom: 1px;
  transition: color .15s ease, background-size .25s ease;
  font-weight: 700;
}
a:hover { color: var(--accent-warm); background-size: 0 1px; }

code {
  font-family: var(--t-mono);
  font-size: 0.86em;
  padding: 0.1em 0.35em;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  border-radius: 3px;
  color: var(--ink);
}

.mono {
  font-family: var(--t-mono);
  font-feature-settings: "tnum", "zero";
}

::selection {
  background: var(--accent);
  color: var(--paper);
}

/* ── layout shells ───────────────────────────────────────────────── */

main > section,
.masthead__inner,
.footer {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

main > section { padding-block: clamp(3rem, 7vw, 6.5rem); }

.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  max-width: 1180px;
  margin: 0 auto;
}

/* ── masthead ────────────────────────────────────────────────────── */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: rgba(250, 250, 246, 0.86);
  backdrop-filter: saturate(120%) blur(8px);
  -webkit-backdrop-filter: saturate(120%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 5;
}
.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 1rem;
}

.wordmark {
  font-family: var(--t-sans);
  font-weight: 900;
  font-size: 1.45rem;
  letter-spacing: -0.04em;
  background: none;
  padding: 0;
  display: inline-flex;
  align-items: baseline;
}
.wordmark:hover { background: none; color: var(--ink); }
.wordmark__td  { color: var(--ink); }
.wordmark__mcp { color: var(--accent); }
.wordmark__dot { color: var(--accent); }

.masthead__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  font-family: var(--t-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.masthead__nav a {
  color: var(--ink-soft);
  font-weight: 500;
}
.masthead__nav a:hover { color: var(--accent); }
.masthead__nav .github-link { color: var(--accent); }

@media (max-width: 720px) {
  .masthead__nav { display: none; }
}

/* ── eyebrow ─────────────────────────────────────────────────────── */

.eyebrow {
  font-family: var(--t-mono);
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink-faded);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}
.eyebrow__mark {
  background: var(--accent);
  color: var(--paper);
  padding: 0.18em 0.55em 0.14em;
  font-weight: 700;
  letter-spacing: 0.18em;
  border-radius: 2px;
}
.eyebrow__sep { color: var(--rule); }

/* ── hero ────────────────────────────────────────────────────────── */

.hero { padding-top: clamp(3.5rem, 8vw, 7rem); }

.hero__title {
  margin-bottom: 2rem;
  max-width: 14ch;
}
.hero__title-accent {
  color: var(--accent);
  font-style: italic;
  font-weight: 900;
}

.hero__lede {
  font-family: var(--t-sans);
  font-weight: 400;
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.95em 1.6em;
  font-family: var(--t-sans);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1.5px solid var(--ink);
  border-radius: 4px;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, color .15s ease, border-color .15s ease;
  background: none;
  color: var(--ink);
}
.btn:hover { transform: translate(-1px, -1px); }
.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn--primary:hover {
  background: var(--accent-warm);
  border-color: var(--accent-warm);
  color: #fff;
}
.btn--ghost {
  border-color: var(--ink);
  color: var(--ink);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

/* hero btns: kill underline */
.hero__actions .btn { background-image: none; }

.stamp-rail {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.5rem;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding-block: 1rem;
}
.stamp-rail li { display: inline-flex; align-items: baseline; gap: 0.5rem; }
.stamp-rail__key {
  font-family: var(--t-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.66rem;
  font-weight: 500;
  color: var(--ink-faded);
}
.stamp-rail__val {
  font-family: var(--t-sans);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}
.stamp-rail__val.mono {
  font-family: var(--t-mono);
  font-size: 0.9rem;
  font-feature-settings: "tnum";
  font-weight: 500;
}
.stamp-rail__val--live {
  position: relative;
  padding-left: 1rem;
  color: var(--accent);
}
.stamp-rail__val--live::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(255, 77, 0, 0.5);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 77, 0, 0.55); }
  70%  { box-shadow: 0 0 0 9px rgba(255, 77, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 77, 0, 0); }
}

/* ── section heads ───────────────────────────────────────────────── */

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1rem;
}
.section-head__num {
  font-family: var(--t-mono);
  font-feature-settings: "tnum";
  color: var(--accent);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  font-weight: 700;
  flex-shrink: 0;
}
.section-head__title {
  font-weight: 900;
}

/* ── prose sections ──────────────────────────────────────────────── */

.prose__body { max-width: 38rem; }
.prose__lead {
  font-size: 1.08rem;
  font-weight: 400;
  line-height: 1.6;
}
.dropcap {
  font-family: var(--t-sans);
  font-weight: 900;
  float: left;
  font-size: 4rem;
  line-height: 0.9;
  padding: 0.05em 0.18em 0 0;
  color: var(--accent);
}

.pullquote {
  margin: 3rem 0 1rem;
  border-left: 4px solid var(--accent);
  padding: 0.5rem 1.5rem;
  font-family: var(--t-sans);
  font-style: italic;
  font-weight: 700;
  font-size: 1.3rem;
  line-height: 1.4;
  color: var(--ink);
}
.pullquote p { margin: 0; }

/* ── steps ───────────────────────────────────────────────────────── */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: step;
  display: grid;
  gap: 2rem;
  max-width: 50rem;
}
.steps li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.25rem;
  align-items: baseline;
}
.steps__num {
  font-family: var(--t-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  border-top: 2px solid var(--accent);
  padding-top: 0.4rem;
}
.steps__body h3 {
  margin-bottom: 0.4rem;
}
.steps__body p { color: var(--ink-soft); margin: 0; }

/* ── configure / tabs ────────────────────────────────────────────── */

.configure__intro {
  max-width: 48rem;
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.cred-table {
  margin: 0 0 3rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow-x: auto;
  background: var(--paper-warm);
}
.cred-table table {
  width: 100%;
  border-collapse: collapse;
}
.cred-table th,
.cred-table td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
  font-size: 0.92rem;
}
.cred-table tr:last-child td { border-bottom: 0; }
.cred-table th {
  font-family: var(--t-mono);
  font-weight: 700;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-faded);
  background: var(--paper-deep);
}

.tabs__rail {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 1.5rem;
}
.tabs__btn {
  font-family: var(--t-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0.6em 0.4em;
  margin-bottom: -1px;
  color: var(--ink-faded);
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.tabs__btn:hover { color: var(--ink); }
.tabs__btn.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 700;
}

.env-callout {
  margin-top: 2.5rem;
  padding: 1.75rem 1.75rem 0.5rem;
  border: 1px solid var(--rule);
  border-left: 4px solid var(--accent);
  border-radius: 4px;
  background: var(--paper-warm);
}
.env-callout h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 0.6rem;
}
.env-callout > p { max-width: 48rem; }
.env-callout .codeblock { margin-top: 1.25rem; }

.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fade .3s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(2px); } }

.tab-panel p { max-width: 48rem; }
.caption {
  font-size: 0.86rem;
  color: var(--ink-faded);
  font-style: italic;
}

/* ── codeblocks ──────────────────────────────────────────────────── */

.codeblock {
  margin: 1rem 0 1.25rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--ink);
  position: relative;
}
.codeblock figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.85rem;
  font-family: var(--t-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--paper-warm);
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(250, 250, 246, 0.1);
}
.codeblock pre {
  margin: 0;
  padding: 1rem 1.1rem 1.15rem;
  overflow-x: auto;
  line-height: 1.55;
  font-size: 0.84rem;
}
.codeblock code {
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font-family: var(--t-mono);
}
.copy-btn {
  background: none;
  border: 1px solid rgba(250, 250, 246, 0.3);
  border-radius: 3px;
  color: var(--paper-warm);
  font: inherit;
  font-family: var(--t-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.3em 0.75em;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.copy-btn:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.copy-btn.is-copied {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

/* ── tools list ──────────────────────────────────────────────────── */

.tools__intro { max-width: 48rem; margin-bottom: 2.5rem; }

.tool-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.tool-list li {
  display: grid;
  grid-template-columns: minmax(11rem, 16rem) 1fr;
  gap: 2rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.tool-list__name {
  font-size: 0.95rem;
  color: var(--accent);
  font-weight: 700;
}
.tool-list li p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink-soft);
}
@media (max-width: 600px) {
  .tool-list li {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

/* ── what's next ─────────────────────────────────────────────────── */

.whats-next__intro {
  max-width: 48rem;
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
@media (max-width: 640px) {
  .card-grid { grid-template-columns: 1fr; }
}
.card {
  border: 1px solid var(--rule);
  background: var(--paper-warm);
  padding: 1.6rem 1.6rem 1.4rem;
  position: relative;
  border-radius: 4px;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
}
.card:hover {
  transform: translate(-1px, -2px);
  border-color: var(--accent);
  background: #fff;
}
.card header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.7rem;
}
.card__num {
  font-family: var(--t-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.card h3 {
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1.15;
}
.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  line-height: 1.5;
}

/* ── colophon ────────────────────────────────────────────────────── */

.colophon__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2.5rem 2rem;
}
.colophon__grid h4 { margin-bottom: 0.4rem; }
.colophon__grid p {
  font-family: var(--t-sans);
  font-size: 1rem;
  margin: 0;
  color: var(--ink-soft);
}
.colophon__grid p.mono {
  font-family: var(--t-mono);
  font-size: 0.84rem;
  line-height: 1.7;
}

/* ── footer ──────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--rule);
  padding-block: 1.5rem;
  font-family: var(--t-mono);
  text-transform: uppercase;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink-faded);
  text-align: center;
}
.footer p { margin: 0; }

/* ── load animation ──────────────────────────────────────────────── */

@media (prefers-reduced-motion: no-preference) {
  .hero > * {
    opacity: 0;
    transform: translateY(8px);
    animation: rise .7s cubic-bezier(.2, .7, .2, 1) forwards;
  }
  .hero .eyebrow         { animation-delay: 0.05s; }
  .hero .hero__title     { animation-delay: 0.15s; }
  .hero .hero__lede      { animation-delay: 0.30s; }
  .hero .hero__actions   { animation-delay: 0.42s; }
  .hero .stamp-rail      { animation-delay: 0.52s; }

  @keyframes rise {
    to { opacity: 1; transform: translateY(0); }
  }
}

/* ── responsive nudges ───────────────────────────────────────────── */

@media (max-width: 600px) {
  html { font-size: 16px; }
  .stamp-rail { gap: 0.8rem 1.5rem; }
}