/* ---- Go Deeper: dark page on the homepage's design system ---- */

/* hero */
.gd-hero {
  position: relative;
  padding: calc(var(--header-height) + 96px) 0 72px;
  background:
    radial-gradient(circle at 82% 72%, rgba(255, 90, 0, 0.16), transparent 30%),
    var(--ink);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  isolation: isolate;
}
.gd-hero h1 {
  margin: 22px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(40px, 8.5vw, 104px);
  font-weight: 400;
  line-height: 0.96;
  letter-spacing: -0.055em;
  color: var(--paper);
}
.gd-hero h1 em { color: var(--ember-bright); font-weight: 400; }
.gd-hero-grid {
  display: grid;
  grid-template-columns: 1fr 0.62fr;
  align-items: end;
  gap: 70px;
}
.gd-hero-side { max-width: 470px; margin: 0 0 8px; color: var(--paper-dim); font-size: 17px; line-height: 1.6; }
.gd-hero-side .gd-updated {
  display: inline-block; margin-top: 18px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ember-bright);
}
.gd-jump { margin-top: 44px; display: flex; flex-wrap: wrap; gap: 10px; }
.gd-jump a {
  font-size: 13px; color: var(--paper); text-decoration: none;
  border: 1px solid var(--line-strong); border-radius: 999px;
  padding: 8px 16px; transition: border-color .2s var(--ease), color .2s var(--ease);
}
.gd-jump a:hover { border-color: var(--ember); color: var(--ember-bright); }
.gd-jump .gd-vault-pill { border-color: var(--ember-dark); color: var(--ember-bright); }

/* context band */
.gd-context { border-bottom: 1px solid var(--line); background: var(--ink-soft); }
.gd-context-grid { display: grid; grid-template-columns: 1fr 0.55fr; gap: 60px; align-items: center; padding: clamp(36px, 5vw, 56px) 0; }
.gd-context-grid > p { margin: 0; max-width: 720px; color: var(--paper-dim); font-size: 16px; line-height: 1.7; }
.gd-context-cta { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.gd-context-link { color: var(--paper); font-size: 14px; text-decoration: none; border-bottom: 1px solid rgba(255, 90, 0, 0.5); padding-bottom: 2px; }
.gd-context-link:hover { color: var(--ember-bright); }
@media (max-width: 900px) { .gd-context-grid { grid-template-columns: 1fr; gap: 28px; } }
@media (max-width: 900px) {
  .gd-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .gd-hero-side { margin: 0; }
}

/* shared dark components */
.gd-note { max-width: 640px; color: var(--paper-dim); font-size: 15px; line-height: 1.65; }
.gd-mono { font-family: "SFMono-Regular", Consolas, monospace; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ember); }

/* tools */
.gd-toolgroup { margin-bottom: 46px; }
.gd-toolgroup h3 { font-family: Georgia, serif; font-weight: 400; font-size: 24px; letter-spacing: -0.02em; margin: 0 0 2px; color: var(--paper); }
.gd-toolgroup .gd-mono { display: block; margin-bottom: 14px; }
.gd-tool { display: flex; gap: 16px; align-items: baseline; padding: 14px 0; border-top: 1px solid var(--line); }
.gd-tool:last-child { border-bottom: 1px solid var(--line); }
.gd-tool-name { font-family: Georgia, serif; font-size: 17px; white-space: nowrap; color: var(--paper); }
.gd-tool-name a { color: var(--paper); text-decoration: none; border-bottom: 1px solid rgba(255, 90, 0, 0.5); }
.gd-tool-name a:hover { color: var(--ember-bright); }
.gd-tool-note { flex: 1; font-size: 14.5px; line-height: 1.55; color: var(--paper-dim); }
.gd-status { font-family: "SFMono-Regular", Consolas, monospace; font-size: 10px; letter-spacing: .1em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.gd-status.current { color: #7fd695; background: rgba(127, 214, 149, 0.1); }
.gd-status.watch { color: #e8c766; background: rgba(232, 199, 102, 0.1); }
.gd-status.replaced { color: var(--ember-bright); background: rgba(255, 90, 0, 0.12); }
@media (max-width: 640px) { .gd-tool { flex-wrap: wrap; } }

/* fast wins: expandable cards in the idea-grid language */
.gd-doctrine {
  border: 1px solid var(--line-strong); border-left: 3px solid var(--ember);
  padding: 22px 26px; margin: 0 0 40px;
  color: var(--paper-dim); font-size: 15px; line-height: 1.65; max-width: 820px;
}
.gd-doctrine strong { color: var(--paper); }
.gd-wins { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-strong); border-bottom: 0; }
details.gd-win { border-bottom: 1px solid var(--line-strong); border-right: 1px solid var(--line-strong); }
details.gd-win:nth-child(3n) { border-right: 0; }
details.gd-win summary { cursor: pointer; list-style: none; padding: 28px 28px 22px; position: relative; }
details.gd-win summary::-webkit-details-marker { display: none; }
details.gd-win summary::after {
  content: "+"; position: absolute; top: 20px; right: 22px;
  font-family: Georgia, serif; font-size: 24px; color: var(--ember);
}
details.gd-win[open] summary::after { content: "–"; }
details.gd-win summary h3 { font-family: Georgia, serif; font-weight: 400; font-size: 21px; letter-spacing: -0.02em; margin: 10px 0 10px; color: var(--paper); }
details.gd-win summary p { font-size: 14px; line-height: 1.6; color: var(--paper-dim); margin: 0 0 12px; }
.gd-leash { font-family: "SFMono-Regular", Consolas, monospace; font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase; color: var(--ember-bright); }
.gd-win-body { padding: 0 28px 26px; font-size: 14px; line-height: 1.7; color: var(--paper-dim); }
.gd-win-body p { margin: 14px 0 0; }
.gd-win-body strong { color: var(--paper); }
@media (max-width: 980px) {
  .gd-wins { grid-template-columns: repeat(2, 1fr); }
  details.gd-win:nth-child(3n) { border-right: 1px solid var(--line-strong); }
  details.gd-win:nth-child(2n) { border-right: 0; }
}
@media (max-width: 640px) {
  .gd-wins { grid-template-columns: 1fr; }
  details.gd-win { border-right: 0 !important; }
}

/* prompts */
.gd-prompt { border: 1px solid var(--line-strong); margin-bottom: -1px; }
.gd-prompt summary { cursor: pointer; padding: 20px 26px; list-style: none; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-family: Georgia, serif; font-size: 18px; color: var(--paper); }
.gd-prompt summary::-webkit-details-marker { display: none; }
.gd-prompt summary:hover { color: var(--ember-bright); }
.gd-prompt-body { padding: 0 26px 22px; }
.gd-prompt-text { font-family: "SFMono-Regular", Consolas, monospace; font-size: 13.5px; line-height: 1.7; color: var(--paper-dim); background: var(--ink-lift); padding: 18px 20px; white-space: pre-wrap; }
.gd-copy { margin-top: 12px; font-size: 12.5px; background: none; border: 1px solid var(--line-strong); border-radius: 999px; padding: 6px 16px; cursor: pointer; color: var(--paper); }
.gd-copy:hover { border-color: var(--ember); color: var(--ember-bright); }

/* diagrams */
.gd-diagrams { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 26px; }
.gd-diagram img { width: 100%; height: auto; display: block; border: 1px solid var(--line-strong); background: #fff; cursor: zoom-in; }
.gd-diagram figcaption { font-size: 13.5px; color: var(--paper-dim); margin-top: 10px; line-height: 1.5; }
.gd-lightbox { position: fixed; inset: 0; background: rgba(8,8,8,.95); z-index: 200; display: none; align-items: center; justify-content: center; padding: 32px; cursor: zoom-out; }
.gd-lightbox.open { display: flex; }
.gd-lightbox img { max-width: 100%; max-height: 92vh; }

/* downloads */
.gd-dls { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); border: 1px solid var(--line-strong); }
.gd-dl { padding: 28px; border-right: 1px solid var(--line-strong); }
.gd-dl:last-child { border-right: 0; }
.gd-dl h3 { font-family: Georgia, serif; font-weight: 400; font-size: 21px; margin: 10px 0 10px; }
.gd-dl h3 a { color: var(--paper); text-decoration: none; border-bottom: 1px solid rgba(255, 90, 0, 0.5); }
.gd-dl h3 a:hover { color: var(--ember-bright); }
.gd-dl p { font-size: 14px; line-height: 1.6; color: var(--paper-dim); margin: 0; }

/* signup + changelog */
.gd-form { max-width: 520px; margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.gd-form input[type="email"] { flex: 1 1 260px; padding: 13px 16px; font-size: 15px; background: var(--ink-lift); border: 1px solid var(--line-strong); color: var(--paper); }
.gd-form button { padding: 13px 26px; font-size: 15px; background: var(--ember); color: #fff; border: 0; cursor: pointer; }
.gd-form button:hover { background: var(--ember-bright); }
.gd-consent { font-size: 13px; color: var(--steel); margin-top: 14px; max-width: 520px; }
.gd-changelog { margin: 26px 0 0; padding: 0; list-style: none; max-width: 640px; font-size: 15px; line-height: 1.7; color: var(--paper-dim); }
.gd-changelog li { margin-bottom: 8px; }
.gd-date { font-family: "SFMono-Regular", Consolas, monospace; font-size: 12px; color: var(--ember-bright); margin-right: 10px; }