/* ════════════════════════════════════════════════════════════
   MD Star — site.css  (developer edition)
   Fonts: Inter (body) + JetBrains Mono (code/labels/terminal)
   ════════════════════════════════════════════════════════════ */

/* ── Tokens: Dark ──────────────────────────────────────────── */
:root,
[data-theme="dark"] {
  --bg:        #0a0a0a;
  --bg-2:      #101010;
  --bg-3:      #161616;
  --bg-4:      #1c1c1c;
  --bg-5:      #242424;
  --line:      rgba(255, 255, 255, 0.08);
  --line-2:    rgba(255, 255, 255, 0.04);
  --text:      #f0f0f0;
  --text-2:    #888888;
  --text-3:    #3a3a3a;
  --amber:     #f5a623;
  --amber-hi:  #ffc147;
  --amber-lo:  #6b4400;
  --amber-bg:  rgba(245, 166, 35, 0.10);
  --amber-dim: rgba(245, 166, 35, 0.06);
  --code-bg:   #0c0c0c;
  --term-bg:   #080808;
  --term-text: #c8c0a8;
  --prev-bg:   #141410;
  --prev-text: #e8e4d8;
  --prev-muted:#666050;
  color-scheme: dark;
}

/* ── Tokens: Light ─────────────────────────────────────────── */
[data-theme="light"] {
  --bg:        #fafafa;
  --bg-2:      #f2f2f2;
  --bg-3:      #e8e8e8;
  --bg-4:      #dedede;
  --bg-5:      #d4d4d4;
  --line:      rgba(0, 0, 0, 0.10);
  --line-2:    rgba(0, 0, 0, 0.05);
  --text:      #111111;
  --text-2:    #555555;
  --text-3:    #aaaaaa;
  --amber:     #c07010;
  --amber-hi:  #d88020;
  --amber-lo:  #eed090;
  --amber-bg:  rgba(192, 112, 16, 0.10);
  --amber-dim: rgba(192, 112, 16, 0.05);
  --code-bg:   #efefef;
  --term-bg:   #111111;
  --term-text: #c8c0a8;
  --prev-bg:   #f5f3ed;
  --prev-text: #1c1a14;
  --prev-muted:#7a7060;
  color-scheme: light;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.2s, color 0.2s;
}

a { color: inherit; }
img { display: block; }
code {
  font-family: "JetBrains Mono", "Menlo", "Monaco", monospace;
  font-size: 0.85em;
  background: var(--bg-3);
  padding: 1px 5px;
  border-radius: 3px;
  color: var(--amber);
}

/* ── Utility ───────────────────────────────────────────────── */
.amber-text { color: var(--amber); }
.mono { font-family: "JetBrains Mono", monospace; font-size: 0.875em; }

/* ── Header ────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 52px;
  padding: 0 clamp(16px, 5vw, 64px);
  background: rgba(10, 10, 10, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px);
  transition: background 0.2s;
}

[data-theme="light"] .site-header {
  background: rgba(250, 250, 250, 0.92);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}
.brand img { border-radius: 4px; }

.site-header nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex: 1;
  font-size: 13px;
  color: var(--text-2);
}
.site-header nav a { text-decoration: none; transition: color 0.15s; }
.site-header nav a:hover { color: var(--text); }

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.theme-toggle:hover { color: var(--text); background: var(--bg-3); }

[data-theme="dark"]  .icon-sun  { display: block; }
[data-theme="dark"]  .icon-moon { display: none; }
[data-theme="light"] .icon-sun  { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.btn-gh {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 32px;
  padding: 0 14px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  color: var(--text-2);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}
.btn-gh:hover { color: var(--text); background: var(--bg-4); border-color: var(--line); }

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 48px;
  padding: clamp(48px, 7vw, 88px) clamp(16px, 5vw, 64px) clamp(40px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  max-width: 1280px;
  margin: 0 auto;
  box-sizing: border-box;
  width: 100%;
}

/* clear the max-width when used as full-bleed */
section.hero { max-width: none; }

/* badge row */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 28px;
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 9px;
  border-radius: 3px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-2);
}

.badge-warn {
  border-color: rgba(245, 166, 35, 0.3);
  background: var(--amber-dim);
  color: var(--amber);
}

.hero-text {
  display: flex;
  flex-direction: column;
  padding-top: 8px;
}

h1 {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(32px, 4.2vw, 54px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: clamp(14px, 1.8vw, 16px);
  line-height: 1.7;
  color: var(--text-2);
  max-width: 460px;
  margin-bottom: 32px;
}

/* Install block */
.install-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px 18px;
  margin-bottom: 28px;
  max-width: 480px;
}

.install-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}

.install-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  line-height: 2;
}

.i-prompt { color: var(--amber); user-select: none; }
.i-cmd    { color: var(--text); flex: 1; }

.copy-btn {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  flex-shrink: 0;
}
.copy-btn:hover { color: var(--text-2); background: var(--bg-4); }
.copy-btn.copied { color: var(--amber); border-color: var(--amber-bg); }

/* CTA buttons */
.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 22px;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--amber);
  color: #0a0a0a;
}
.btn-primary:hover { background: var(--amber-hi); }

.btn-outline {
  background: transparent;
  color: var(--text-2);
  border-color: var(--line);
}
.btn-outline:hover { color: var(--text); background: var(--bg-3); border-color: var(--bg-4); }

/* ── Terminal mockup ───────────────────────────────────────── */
.hero-term {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--term-bg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.5),
    0 32px 80px rgba(0,0,0,0.5);
  animation: rise 0.7s 0.05s cubic-bezier(0.22,1,0.36,1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.term-titlebar {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 38px;
  padding: 0 14px;
  background: var(--bg-4);
  border-bottom: 1px solid var(--line);
}

.term-proc {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--text-3);
  flex-shrink: 0;
}

.term-tabs {
  display: flex;
  gap: 2px;
  margin-left: 4px;
}

.demo-tab {
  height: 24px;
  padding: 0 12px;
  border-radius: 4px;
  border: none;
  background: transparent;
  color: var(--text-3);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
}
.demo-tab.active, .demo-tab:hover {
  background: var(--amber-bg);
  color: var(--amber);
}

.term-badge {
  margin-left: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--text-3);
}

.term-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
}

/* Terminal pane */
.pane-term {
  background: var(--term-bg);
  border-right: 1px solid var(--line);
  padding: 18px 20px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--term-text);
  transition: opacity 0.2s;
  overflow: hidden;
}

.term-prompt-line {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  font-size: 12px;
}
.tp-sym { color: var(--amber); }
.tp-sep { color: var(--text-3); }
.tp-cmd { color: var(--text); }
.tp-cursor {
  color: var(--amber);
  animation: blink 1.1s step-end infinite;
  font-size: 11px;
}

@keyframes blink {
  0%,100% { opacity: 1; }
  50%      { opacity: 0; }
}

.term-out { color: #807868; }
.to-rule  { border-top: 1px solid var(--amber-lo); margin: 2px 0; }
.to-h1    { color: #f0ece0; font-weight: 700; }
.to-h2    { color: #d0c8b0; font-weight: 700; margin-top: 2px; }
.to-p     { color: #807868; }
.to-blank { height: 0.85em; }
.to-code  { color: var(--amber); }
.to-li    { color: #987848; }
.to-li .a { color: var(--amber); margin-right: 4px; }
.to-diag  { display: flex; align-items: center; }
.to-diag2 { padding-left: 2px; }
.to-box   { border: 1px solid #504830; padding: 0 5px; border-radius: 2px; color: #a09070; font-size: 11px; }
.to-arr   { color: var(--amber-lo); }
.to-indent{ color: transparent; user-select: none; }
.a        { color: var(--amber); }

/* Preview pane */
.pane-preview {
  background: var(--prev-bg);
  overflow-y: auto;
  transition: opacity 0.2s;
}

.prev-inner { padding: 20px 22px; }

.prev-ruler {
  width: 28px;
  height: 3px;
  background: var(--amber);
  border-radius: 1px;
  margin-bottom: 14px;
}

.prev-h1 {
  font-family: "Inter", sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--prev-text);
  margin-bottom: 6px;
  line-height: 1.2;
}

.prev-lead {
  font-size: 13px;
  color: var(--prev-text);
  line-height: 1.5;
  font-style: italic;
  margin-bottom: 10px;
}

.prev-h2 {
  font-family: "Inter", sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--prev-text);
  margin: 14px 0 6px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 4px;
}

.prev-p {
  font-size: 12px;
  color: var(--prev-muted);
  line-height: 1.55;
  margin-bottom: 6px;
}

.prev-hr { height: 1px; border: none; background: var(--line); margin: 10px 0; }

.prev-code {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  background: var(--bg-4);
  color: var(--amber);
  border-radius: 3px;
  padding: 4px 8px;
  margin-bottom: 3px;
}

.prev-diag {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}
.pd-node {
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--prev-muted);
  background: var(--bg-3);
}
.pd-core { border-color: var(--amber); color: var(--amber); background: var(--amber-dim); }
.pd-arrows { display: flex; align-items: center; }
.pd-line { width: 12px; height: 1px; background: var(--amber); }
.pd-branch { display: flex; flex-direction: column; gap: 12px; }
.pd-branch span { display: block; width: 8px; height: 1px; background: var(--amber); }
.pd-targets { display: flex; flex-direction: column; gap: 5px; }

/* Status bar */
.term-statusbar {
  height: 26px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px;
  background: var(--bg-4);
  border-top: 1px solid var(--line);
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--text-3);
}
.tsb-sep { opacity: 0.4; }
.tsb-right { margin-left: auto; }

/* ── Spec bar ──────────────────────────────────────────────── */
.spec-bar {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  background: var(--bg-2);
  border-bottom: 1px solid var(--line);
  padding: 0 clamp(16px, 5vw, 64px);
}

.spec-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 18px 40px 18px 0;
  flex: 1;
  min-width: 160px;
}

.spec-div {
  width: 1px;
  background: var(--line);
  margin: 12px 24px 12px 0;
  align-self: stretch;
  flex-shrink: 0;
}

.spec-key {
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

.spec-val {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

/* ── Sections ──────────────────────────────────────────────── */
.section {
  border-bottom: 1px solid var(--line);
}

.section-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: clamp(56px, 8vw, 100px) clamp(16px, 5vw, 64px);
}

.section-alt { background: var(--bg-2); }

.section-head {
  margin-bottom: clamp(40px, 6vw, 64px);
}

.section-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 10px;
}

h2 {
  font-family: "JetBrains Mono", monospace;
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 10px;
}

.section-sub {
  font-size: 15px;
  color: var(--text-2);
  max-width: 520px;
}

/* ── Features ──────────────────────────────────────────────── */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.feat {
  background: var(--bg);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background 0.15s;
}
.feat:hover { background: var(--bg-2); }

.feat-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 4px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  color: var(--amber);
}

.feat h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}

.feat p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
  flex: 1;
}

.feat-tags {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}

.feat-tag {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 8px;
  border-radius: 3px;
  border: 1px solid var(--line);
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

/* ── Architecture ──────────────────────────────────────────── */
.arch-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.arch-row {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 22px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--bg-3);
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.arch-node:hover {
  border-color: var(--amber);
  background: var(--amber-dim);
}

.arch-core {
  border-color: var(--amber);
  background: var(--amber-dim);
}

.arch-leaf { border-color: var(--bg-5); }

.an-name {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}
.an-name code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: var(--amber);
}

.an-desc {
  font-size: 11px;
  color: var(--text-3);
  white-space: nowrap;
}

.arch-connectors {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3px 0;
}

.arch-vert {
  width: 1px;
  height: 16px;
  background: var(--amber);
  opacity: 0.4;
}

.arch-horiz {
  display: flex;
  gap: 110px;
}
.arch-horiz span {
  display: block;
  width: 70px;
  height: 1px;
  background: var(--amber);
  opacity: 0.35;
}

.arch-connectors-2 {
  flex-direction: row;
  gap: 110px;
}

.arch-mid-row, .arch-out-row { gap: 20px; }

/* architecture notes */
.arch-notes {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
}

.arch-note {
  border-left: 2px solid var(--line);
  padding-left: 20px;
}
.arch-note:hover { border-left-color: var(--amber); }

.an-tag {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
  margin-bottom: 6px;
}

.arch-note p {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ── Quick start ───────────────────────────────────────────── */
.qs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.qs-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-2);
}

.qs-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.qs-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.qs-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.codeblock {
  margin: 0;
  padding: 20px 20px;
  background: var(--code-bg);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 1.9;
  color: var(--text-2);
  overflow-x: auto;
  border: none;
}

.t-kw  { color: var(--amber); font-weight: 700; }
.t-dim { color: var(--text-3); }

/* ── Footer ────────────────────────────────────────────────── */
.site-footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  padding: 24px clamp(16px, 5vw, 64px);
  background: var(--bg-2);
  border-top: 1px solid var(--line);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}
.footer-brand img { border-radius: 3px; }

.footer-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 12px;
  color: var(--text-2);
}
.footer-links a { text-decoration: none; transition: color 0.15s; }
.footer-links a:hover { color: var(--text); }

.footer-legal {
  margin-left: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  color: var(--text-3);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 1040px) {
  .arch-wrap { grid-template-columns: 1fr; gap: 40px; }
  .arch-notes { flex-direction: row; flex-wrap: wrap; }
  .arch-note  { flex: 1; min-width: 220px; }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-bottom: 48px;
  }

  .term-body { grid-template-columns: 1fr; }
  .pane-preview { border-top: 1px solid var(--line); }
  .pane-term  { border-right: none; }

  .feat-grid { grid-template-columns: 1fr 1fr; }
  .qs-grid   { grid-template-columns: 1fr; }

  .arch-horiz { gap: 60px; }
  .arch-connectors-2 { gap: 60px; }
  .arch-horiz span { width: 40px; }

  .spec-div { display: none; }
  .spec-item {
    border-bottom: 1px solid var(--line);
    padding: 16px 0;
    min-width: 50%;
  }
  .spec-item:last-child { border-bottom: none; }
}

@media (max-width: 640px) {
  .site-header nav { display: none; }

  h1 { font-size: clamp(32px, 10vw, 48px); }
  h2 { font-size: clamp(26px, 8vw, 36px); }

  .feat-grid { grid-template-columns: 1fr; }
  .arch-horiz { gap: 28px; }
  .arch-connectors-2 { gap: 28px; }
  .arch-horiz span { width: 20px; }
  .arch-mid-row, .arch-out-row { flex-direction: column; align-items: center; }

  .footer-legal { margin-left: 0; }
  .install-block { max-width: 100%; }
}