/* Emergenti TAP — Transparent Authorship Protocol
   Static landing site. Colors driven by CSS variables; light theme
   is applied by setting data-theme="light" on <html> (see app.js). */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root,
html[data-theme="dark"] {
  --bg: #14100c;
  --panel: #1b160f;
  --code-bg: #14100c;
  --head: #f7f3ea;
  --text: #e8e2d8;
  --body: #b8b0a4;
  --muted: #9a9184;
  --faint: #7a7266;
  --faint2: #6f675c;
  --border: rgba(232, 226, 216, 0.08);
  --border-soft: rgba(232, 226, 216, 0.07);
  --amber: #e0a458;
  --amber-link: #e0a458;
  --amber-hover: #edbd7c;
  --green: #059669;
  --green-btn-text: #06251b;
  --purple: #9d6bf5;
  --purple-dot: #7c3aed;
  --purple-border: rgba(157, 107, 245, 0.22);
  --purple-border2: rgba(157, 107, 245, 0.28);
  --purple-bg: rgba(157, 107, 245, 0.10);
  --sand-bg: rgba(224, 164, 88, 0.03);
  --sand-border: rgba(224, 164, 88, 0.35);
}

html[data-theme="light"] {
  --bg: #f5f0e6;
  --panel: #ffffff;
  --code-bg: #f1ebdf;
  --head: #14100c;
  --text: #2a231a;
  --body: #4a4234;
  --muted: #6b6252;
  --faint: #8a8175;
  --faint2: #9a9184;
  --border: rgba(20, 16, 12, 0.12);
  --border-soft: rgba(20, 16, 12, 0.08);
  --amber: #e0a458;
  --amber-link: #a76a15;
  --amber-hover: #8a5610;
  --green: #047857;
  --green-btn-text: #ffffff;
  --purple: #6d28d9;
  --purple-dot: #7c3aed;
  --purple-border: rgba(109, 40, 217, 0.2);
  --purple-border2: rgba(109, 40, 217, 0.3);
  --purple-bg: rgba(109, 40, 217, 0.07);
  --sand-bg: rgba(224, 164, 88, 0.08);
  --sand-border: rgba(167, 106, 21, 0.4);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Hanken Grotesk', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  transition: background .25s ease, color .25s ease;
}

a { color: var(--amber-link); text-decoration: none; }
a:hover { color: var(--amber-hover); }
::selection { background: rgba(224, 164, 88, 0.28); }
code { font-family: 'JetBrains Mono', monospace; }
code.amber { color: var(--amber); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 26px 0; border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.brand-name {
  font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 15px;
  letter-spacing: -0.01em; color: var(--head);
}
.brand-expand { font-size: 13px; color: var(--faint); }
.nav-links {
  display: flex; gap: 24px; align-items: center;
  font-size: 14px; font-family: 'JetBrains Mono', monospace;
}
.nav-links a { color: var(--body); }
.nav-links a:hover { color: var(--amber-hover); }
#theme-toggle {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--body);
  background: transparent; border: 1px solid var(--border); border-radius: 7px;
  padding: 6px 13px; cursor: pointer;
}

/* Hero */
.hero { padding: clamp(64px, 11vw, 128px) 0 clamp(56px, 8vw, 96px); }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; letter-spacing: 0.02em;
  color: var(--amber); margin-bottom: 32px;
}
.hero h1 {
  font-size: clamp(38px, 6.5vw, 76px); line-height: 1.02; letter-spacing: -0.03em;
  font-weight: 700; color: var(--head); max-width: 15ch;
}
.subhead { font-size: clamp(20px, 3vw, 28px); color: var(--text); margin-top: 28px; font-weight: 500; }
.subtext { font-size: clamp(16px, 2.2vw, 19px); color: var(--muted); margin-top: 20px; max-width: 60ch; line-height: 1.6; }

/* Two columns */
.cols {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px; padding-bottom: clamp(56px, 8vw, 96px);
}
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: clamp(28px, 4vw, 40px); display: flex; flex-direction: column;
}
.card-tag { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.dot { width: 9px; height: 9px; border-radius: 50%; }
.dot-green { background: var(--green); }
.dot-purple { background: var(--purple-dot); }
.tag-text {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--faint);
}
.tag-green { color: var(--green); }
.tag-purple { color: var(--purple); }
.tag-amber { color: var(--amber); font-size: 12px; }
.card h2 {
  font-size: clamp(24px, 3.2vw, 30px); font-weight: 700; letter-spacing: -0.02em;
  color: var(--head); margin-bottom: 14px;
}
.card-intro { font-size: 15px; color: var(--muted); line-height: 1.6; margin-bottom: 26px; }

.steps { list-style: none; display: flex; flex-direction: column; gap: 18px; margin-bottom: 32px; }
.steps li { display: flex; gap: 14px; }
.steps-inline { gap: 14px; margin-bottom: 26px; }
.steps-inline li { align-items: baseline; }
.step-num { font-family: 'JetBrains Mono', monospace; font-size: 13px; flex-shrink: 0; padding-top: 2px; }
.steps-inline .step-num { padding-top: 0; }
.num-green { color: var(--green); }
.num-purple { color: var(--purple); }
.step-title { font-weight: 600; color: var(--text); font-size: 15px; margin-bottom: 6px; }
.step-desc { font-size: 14px; color: var(--muted); line-height: 1.5; }
.steps-inline li > span:last-child { font-size: 14px; color: var(--body); line-height: 1.55; }
.steps-inline code { color: var(--text); }

.code-inline {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--body);
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 7px;
  padding: 9px 12px; margin-top: 8px;
}

.btn {
  margin-top: auto; display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; font-weight: 600; font-size: 15px; padding: 13px 20px; border-radius: 9px;
  align-self: flex-start;
}
.btn-green { background: var(--green); color: var(--green-btn-text); }
.btn-green:hover { color: var(--green-btn-text); opacity: 0.92; }

.codeblock {
  margin-top: auto; background: var(--code-bg); border: 1px solid var(--purple-border);
  border-radius: 11px; overflow: hidden;
}
.codeblock-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--border-soft);
}
.codeblock-label {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--faint);
}
#copy-btn {
  font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--body);
  background: var(--purple-bg); border: 1px solid var(--purple-border2);
  border-radius: 6px; padding: 5px 11px; cursor: pointer;
}
#copy-btn.copied { color: var(--purple); }
.codeblock pre {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.75;
  color: var(--body); padding: 16px; overflow-x: auto;
  white-space: pre-wrap; word-break: break-word;
}

/* Sandbox */
.sandbox { padding-bottom: clamp(56px, 8vw, 96px); }
.sandbox-box {
  border: 1px dashed var(--sand-border); border-radius: 14px;
  padding: clamp(28px, 5vw, 48px); background: var(--sand-bg);
  display: flex; flex-direction: column; align-items: flex-start; gap: 14px;
}
.sandbox-box p { font-size: clamp(17px, 2.4vw, 21px); color: var(--text); max-width: 52ch; line-height: 1.5; font-weight: 500; }
.coming-soon { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--faint); }

/* Used by */
.usedby { padding-bottom: clamp(56px, 8vw, 96px); }
.usedby-box {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 22px 26px; border: 1px solid var(--border); border-radius: 12px;
}
.usedby-box span:last-child { font-size: 15px; color: var(--body); line-height: 1.55; }

/* Why */
.why { padding-bottom: clamp(64px, 9vw, 104px); max-width: 66ch; }
.why .tag-text { display: block; margin-bottom: 16px; font-size: 11px; letter-spacing: 0.06em; }
.why p { font-size: 15px; color: var(--muted); line-height: 1.7; }

/* Footer */
.footer {
  border-top: 1px solid var(--border); padding: 36px 0 56px;
  display: flex; flex-direction: column; gap: 22px;
}
.footer-links {
  display: flex; gap: 28px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace; font-size: 14px;
}
.footer-line { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--faint2); }

/* Git Profile: Before & After */
.git-section { padding-bottom: clamp(56px, 8vw, 96px); }
.git-intro { font-size: clamp(17px, 2.4vw, 21px); color: var(--muted); margin-bottom: 32px; font-weight: 500; }
.git-label {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--faint); margin-bottom: 14px; margin-top: 8px;
}
.git-comparison {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 32px;
}
@media (max-width: 760px) { .git-comparison { grid-template-columns: 1fr; } }

.git-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
}
.git-card-header {
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 10px; font-size: 13px;
}
.git-header-text { color: var(--muted); font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.git-badge {
  font-family: 'JetBrains Mono', monospace; font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.05em; padding: 2px 8px; border-radius: 10px; font-weight: 600;
}
.git-before { background: rgba(248,81,73,.12); color: #f85149; }
.git-after { background: rgba(63,185,80,.12); color: #3fb950; }

.git-body { padding: 16px; }
.git-title { font-size: 15px; font-weight: 600; color: var(--head); margin-bottom: 12px; }
.git-trailers {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; line-height: 1.7;
  color: var(--muted); white-space: pre-wrap; word-break: break-all;
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 7px;
  padding: 12px; margin: 0;
}
.git-trailers .gk { color: var(--amber); }
.git-trailers .gv { color: var(--text); }
.git-trailers .gh { color: var(--green); font-weight: 600; }
.git-trailers .gm { color: var(--purple); font-weight: 600; }
.git-trailers .gf { color: var(--amber); }
.git-trailers .ge { font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif; }

.git-note {
  margin-top: 12px; padding: 10px 14px; border-radius: 7px;
  font-size: 12px; line-height: 1.55; font-family: 'Hanken Grotesk', system-ui, sans-serif;
}
.git-note code {
  font-size: 11px; background: var(--code-bg); padding: 2px 5px; border-radius: 4px;
}
.git-note-lost { background: rgba(248,81,73,.06); border: 1px solid rgba(248,81,73,.15); color: #f85149; }
.git-note-gain { background: rgba(63,185,80,.06); border: 1px solid rgba(63,185,80,.15); color: #3fb950; }

.git-retrieval { margin-top: 8px; }
.git-retrieval-code {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.8;
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px; overflow-x: auto; margin: 0; white-space: pre-wrap;
}
.git-retrieval-code .gc { color: var(--faint); font-style: italic; }
.git-retrieval-code .gcmd { color: var(--green); }

/* Used by: list layout */
.usedby-list {
  list-style: none; display: flex; flex-wrap: wrap; gap: 10px 18px;
  margin: 14px 0 18px; padding: 0;
}
.usedby-list li { font-size: 15px; }
.usedby-list li::before {
  content: ''; display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--green); margin-right: 10px;
  vertical-align: middle;
}
.usedby-list code { font-size: 14px; }
.usedby-yours {
  display: flex; align-items: center; gap: 10px; padding-top: 14px;
  border-top: 1px solid var(--border); font-size: 14px;
}
.usedby-yours span { color: var(--muted); }
.usedby-add { color: var(--green); font-weight: 500; }
.usedby-add:hover { color: var(--amber-hover); }