/* ========================================================== *
 * Grove — V1 Refined (tech dark + light, grouped, trendy 2026)
 * ========================================================== */

:root[data-theme="dark"] {
  --bg:         #0b0d10;
  --bg-soft:    #12151a;
  --bg-card:    #151920;
  --bg-inset:   #0d1117;
  --border:     #23292f;
  --border-strong: #2d343b;
  --text:       #e6edf3;
  --text-dim:   #b4bcc6;
  --text-mute:  #7d8691;
  --accent:     #7ab8ff;
  --accent-ink: #0b0d10;
  --ok:         #4ec07a;
  --warn:       #e3a24a;
  --danger:     #e06260;
  --tok-string: #9ecbff;
  --tok-num:    #f0a868;
  --shadow:     0 1px 0 rgba(255,255,255,0.02) inset, 0 20px 40px -20px rgba(0,0,0,0.6);
  --noise-opacity: 0.025;
}
:root[data-theme="light"] {
  --bg:         #fafaf7;
  --bg-soft:    #f3f2ec;
  --bg-card:    #ffffff;
  --bg-inset:   #ecebe3;        /* soft warm surface for terminal */
  --term-text:  #2a2d32;        /* terminal body text in light */
  --term-chrome-bg: #e2e1d9;    /* tab bar in light */
  --border:     #e4e2da;
  --border-strong: #cfcdc4;
  --text:       #1a1d22;
  --text-dim:   #3d434b;
  --text-mute:  #6b7078;
  --accent:     #1f6feb;
  --accent-ink: #ffffff;
  --ok:         #2f8c52;
  --warn:       #b9651a;
  --danger:     #c0413f;
  --tok-string: #2d6bb3;        /* muted blue on light bg */
  --tok-num:    #a85a0e;        /* muted amber on light bg */
  --shadow:     0 1px 0 rgba(0,0,0,0.02) inset, 0 20px 40px -24px rgba(30,30,30,0.2);
  --noise-opacity: 0.015;
}
:root[data-theme="dark"] {
  --term-text:  #e6edf3;
  --term-chrome-bg: color-mix(in oklab, #0d1117 80%, #000 20%);
}

:root {
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --measure: 1120px;
  --radius: 10px;
  --radius-sm: 6px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.22s ease, color 0.22s ease;
}

/* view-transition for theme switch */
::view-transition-old(root),
::view-transition-new(root) { animation-duration: 0.35s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.container { max-width: var(--measure); margin: 0 auto; padding: 0 28px; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-soft);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text);
}
h1, h2, h3 { letter-spacing: -0.02em; }

/* hi-highlighted word in hero */
.hi {
  color: var(--text);
  position: relative;
  display: inline-block;
  padding: 0 0.08em;
}
.hi::after {
  content: "";
  position: absolute;
  left: -2%; right: -2%; bottom: 0.06em;
  height: 0.36em;
  background: color-mix(in oklab, var(--accent) 30%, transparent);
  z-index: -1;
  border-radius: 2px;
}

em { font-style: normal; color: var(--accent); font-weight: inherit; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.18s ease;
}
.nav.compact .nav-inner { padding: 10px 28px; }
.nav-inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 28px;
  max-width: var(--measure); margin: 0 auto;
  transition: padding 0.18s ease;
}
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-weight: 700; font-size: 1.02rem;
  color: var(--text); letter-spacing: -0.01em;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  display: inline-flex; width: 28px; height: 28px;
  align-items: center; justify-content: center;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; color: var(--ok);
}
.nav nav { display: flex; gap: 22px; align-items: center; }
.nav nav a {
  color: var(--text-mute); font-size: 0.92rem; transition: color 0.15s ease;
}
.nav nav a:hover { color: var(--text); text-decoration: none; }

.theme-toggle {
  width: 34px; height: 34px;
  border: 1px solid var(--border); background: var(--bg-soft);
  color: var(--text-dim); border-radius: 8px;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 48px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(600px 320px at 85% 0%, color-mix(in oklab, var(--accent) 14%, transparent), transparent 70%),
    radial-gradient(420px 280px at 10% 110%, color-mix(in oklab, var(--ok) 10%, transparent), transparent 70%);
  opacity: 0.55;
}
.hero-bg::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in oklab, var(--text) 4%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklab, var(--text) 4%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8), transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8), transparent 70%);
  opacity: 0.6;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  position: relative;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 0.78rem;
  color: var(--text-mute); letter-spacing: 0.02em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: 999px; margin-bottom: 24px;
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 18%, transparent);
}

.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.4rem);
  font-weight: 650; line-height: 1.08;
  margin-bottom: 22px; max-width: 540px;
}
.lede {
  font-size: 1.15rem; color: var(--text-dim);
  max-width: 520px; margin-bottom: 28px;
  line-height: 1.55;
}

.cta { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 8px;
  font-weight: 500; font-size: 0.95rem;
  font-family: var(--sans);
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease, filter 0.15s ease;
  border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: var(--bg-soft); color: var(--text); border-color: var(--border); }
.btn.ghost:hover { border-color: var(--border-strong); background: var(--bg-card); }

/* ---------- terminal window with tabs ---------- */
.terminal-window {
  background: var(--bg-inset);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-family: var(--mono); min-width: 0;
}
.tw-chrome {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 14px 0;
  background: var(--term-chrome-bg);
  border-bottom: 1px solid color-mix(in oklab, var(--text) 6%, transparent);
  position: relative;
}
.tw-dot { width: 11px; height: 11px; border-radius: 50%; margin-bottom: 8px; }
.tw-dot.tw-r { background: #e06260; } .tw-dot.tw-y { background: #e3a24a; } .tw-dot.tw-g { background: #4ec07a; }
.tw-tabs { display: flex; gap: 2px; margin-left: 14px; }
.tw-tab {
  background: transparent; border: none;
  color: color-mix(in oklab, var(--term-text) 55%, transparent);
  font-family: var(--mono); font-size: 0.78rem;
  padding: 8px 14px 9px;
  border-radius: 6px 6px 0 0;
  cursor: pointer;
  transition: color 0.12s ease, background 0.12s ease;
}
.tw-tab:hover { color: var(--term-text); }
.tw-tab.active {
  color: var(--term-text);
  background: var(--bg-inset);
  border: 1px solid color-mix(in oklab, var(--text) 8%, transparent);
  border-bottom: none;
  position: relative; top: 1px;
}
.tw-body-wrap { position: relative; min-height: 220px; }
.tw-body {
  display: none;
  padding: 18px 20px;
  color: var(--term-text);
  font-size: 0.85rem; line-height: 1.75;
  overflow-x: auto; white-space: pre;
}
.tw-body.active { display: block; }
.tw-body .p  { color: var(--ok); user-select: none; }
.tw-body .m  { color: var(--text-mute); }
.tw-body .ok { color: var(--ok); }
.tw-body .warn { color: var(--warn); }
.tw-body .s  { color: var(--tok-string); }
.tw-body .n  { color: var(--tok-num); }

/* copy button */
.cc-wrap { position: relative; }
.cc-btn {
  position: absolute; top: 8px; right: 8px;
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 9px;
  background: color-mix(in oklab, var(--text) 6%, transparent);
  border: 1px solid color-mix(in oklab, var(--text) 10%, transparent);
  color: color-mix(in oklab, var(--term-text) 70%, transparent);
  border-radius: 6px;
  font-size: 0.72rem;
  font-family: var(--mono);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.cc-wrap:hover .cc-btn { opacity: 1; }
.cc-btn:hover { color: var(--term-text); background: color-mix(in oklab, var(--text) 10%, transparent); }
.cc-btn.copied { color: var(--ok); }

/* meta strip */
.meta-strip {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}
.meta-strip > div {
  background: var(--bg-card);
  padding: 14px 18px;
  display: flex; flex-direction: column; gap: 4px;
}
.ms-k {
  font-family: var(--mono);
  font-size: 0.7rem; letter-spacing: 0.1em;
  color: var(--text-mute); text-transform: uppercase;
}
.ms-v {
  font-size: 0.96rem; font-weight: 500; color: var(--text);
}
.ms-v code { background: transparent; border: none; padding: 0; color: var(--text); font-size: 0.9em; }

/* ---------- section heads (kickered) ---------- */
.section-head { margin-bottom: 40px; max-width: 760px; }
.kicker {
  font-family: var(--mono);
  font-size: 0.74rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-mute);
  display: inline-block; margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 650; line-height: 1.12;
  letter-spacing: -0.025em; color: var(--text);
}
.section-title code {
  font-size: 0.75em; background: var(--bg-soft);
  vertical-align: 0.04em;
}
.section-sub {
  color: var(--text-mute);
  font-size: 1.02rem;
  margin-top: 10px;
  max-width: 62ch;
}

/* ---------- problem (before/after) ---------- */
.problem {
  padding: 88px 0;
  border-bottom: 1px solid var(--border);
}
.ba-grid {
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 18px;
  align-items: stretch;
}
.ba-col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 24px 26px;
}
.ba-after { border-color: color-mix(in oklab, var(--ok) 30%, var(--border)); }
.ba-head { margin-bottom: 16px; }
.ba-tag {
  font-family: var(--mono);
  font-size: 0.76rem;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.ba-tag.ok {
  color: var(--ok);
  background: color-mix(in oklab, var(--ok) 10%, var(--bg-soft));
  border-color: color-mix(in oklab, var(--ok) 30%, var(--border));
}
.ba-tag code { background: transparent; border: none; padding: 0; font-size: 0.95em; color: inherit; }
.ba-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.ba-list li {
  display: flex; align-items: baseline; gap: 10px;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.ba-list li code { background: transparent; border: none; padding: 0; color: var(--text); font-size: 0.88em; }
.ba-x {
  color: var(--danger); font-weight: 700; font-family: var(--mono);
  opacity: 0.85;
}
.ba-ok { color: var(--ok); font-weight: 700; font-family: var(--mono); }
.ba-arrow {
  display: flex; align-items: center; justify-content: center;
  color: var(--text-mute);
}

/* ---------- features ---------- */
.features { padding: 88px 0; border-bottom: 1px solid var(--border); }
.fgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.fcard {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.fcard:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.fcard h3 {
  font-size: 1.02rem; font-weight: 600;
  margin-bottom: 8px; color: var(--text);
}
.fcard h3 code { background: transparent; border: none; padding: 0; font-size: 0.92em; color: var(--text); }
.fcard p {
  color: var(--text-dim);
  font-size: 0.93rem; line-height: 1.55;
}

/* spotlight (big) cards */
.fcard.spotlight {
  grid-column: span 3;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  padding: 0; overflow: hidden; gap: 0;
}
.fcard-visual {
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 28px 28px;
  font-family: var(--mono); font-size: 0.85rem;
  color: var(--text-dim);
  display: flex; flex-direction: column; justify-content: center;
  min-height: 200px;
}
.fcard-visual pre { white-space: pre; overflow-x: auto; line-height: 1.85; }
.fcard-visual .vok { color: var(--ok); }
.fcard-visual .vwn { color: var(--warn); }
.fcard-visual .vlk { color: var(--accent); font-style: italic; }

.port-visual { gap: 6px; }
.pv-row {
  display: flex; align-items: baseline; gap: 10px;
  padding: 8px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.88rem;
  transition: transform 0.15s ease;
}
.pv-row.dim { opacity: 0.6; }
.pv-a { color: var(--text); font-weight: 500; }
.pv-sep { color: var(--text-mute); letter-spacing: 0.1em; flex: 1; }
.pv-p { color: var(--accent); font-weight: 500; }
.pv-note {
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--text-mute);
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fcard-copy {
  padding: 28px 30px;
  display: flex; flex-direction: column; justify-content: center;
}
.fcard-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-mute);
  letter-spacing: 0.14em;
  margin-bottom: 14px;
}
.fcard-copy h3 { font-size: 1.2rem; margin-bottom: 10px; }
.fcard-copy p { font-size: 0.96rem; }

/* ---------- install ---------- */
.install { padding: 88px 0; border-bottom: 1px solid var(--border); }
.install-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.install-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex; flex-direction: column; gap: 14px;
}
.install-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 10px;
}
.install-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.install-card h3 { font-size: 1.08rem; font-weight: 600; color: var(--text); }
.install-card h3 code {
  background: transparent; border: none; padding: 0;
  font-family: var(--mono); color: var(--text); font-size: 0.94em;
}
.install-tag {
  font-family: var(--mono); font-size: 0.68rem;
  padding: 2px 8px; border-radius: 999px;
  background: color-mix(in oklab, var(--ok) 14%, transparent);
  color: var(--ok);
  border: 1px solid color-mix(in oklab, var(--ok) 30%, var(--border));
}
.install-prose { color: var(--text-dim); font-size: 0.94rem; }
.mini-term {
  background: var(--bg-inset);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 0.82rem; line-height: 1.75;
  color: var(--term-text);
  overflow-x: auto; white-space: pre;
  margin-top: auto;
}
.mini-term .p { color: var(--ok); user-select: none; }

/* ---------- commands (ref-groups from v3) ---------- */
.commands { padding: 88px 0; border-bottom: 1px solid var(--border); }
.ref-group {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.ref-group:last-child { border-bottom: 1px solid var(--border); }
.ref-label { display: flex; gap: 14px; align-items: start; }
.ref-idx {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-mute);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  font-weight: 500;
  height: fit-content;
}
.ref-label h4 { font-size: 1.05rem; font-weight: 600; color: var(--text); margin-bottom: 4px; letter-spacing: -0.01em; }
.ref-label p { color: var(--text-mute); font-size: 0.88rem; }
.ref-list {
  list-style: none;
  display: flex; flex-direction: column; gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.ref-list li {
  background: var(--bg-card);
  padding: 12px 18px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  align-items: center;
  transition: background 0.12s ease;
}
.ref-list li:hover { background: var(--bg-soft); }
.ref-list li code { background: none; border: none; padding: 0; color: var(--accent); font-weight: 500; font-size: 0.88rem; }
.ref-list li span { color: var(--text-dim); font-size: 0.92rem; }
.ref-list li span code { color: var(--text-dim); }

/* ---------- final framed CTA ---------- */
.final { padding: 96px 0; }
.final-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 44px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}
.final-card::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(500px 300px at 100% 0%, color-mix(in oklab, var(--accent) 18%, transparent), transparent 70%),
    radial-gradient(400px 240px at 0% 100%, color-mix(in oklab, var(--ok) 12%, transparent), transparent 70%);
  opacity: 0.7;
  pointer-events: none;
}
.final-glyph {
  position: absolute; right: -12px; top: -12px;
  color: color-mix(in oklab, var(--accent) 40%, transparent);
  opacity: 0.35;
  pointer-events: none;
}
.final-copy { position: relative; }
.final-copy .kicker { margin-bottom: 10px; }
.final-copy .section-title { margin-bottom: 8px; }
.final-cta { position: relative; display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 20px; flex-wrap: wrap;
  color: var(--text-mute); font-size: 0.9rem;
}
.footer-brand { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); }
.footer-mark { color: var(--ok); display: inline-flex; align-items: center; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--text-dim); }
.footer-links a:hover { color: var(--text); text-decoration: none; }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .meta-strip { grid-template-columns: repeat(3, 1fr); }
  .fgrid { grid-template-columns: repeat(2, 1fr); }
  .fcard.spotlight { grid-column: span 2; }
  .ba-grid { grid-template-columns: 1fr; }
  .ba-arrow { transform: rotate(90deg); }
  .ref-group { grid-template-columns: 1fr; gap: 18px; }
  .ref-list li { grid-template-columns: 220px 1fr; gap: 14px; }
  .install-grid { grid-template-columns: 1fr; }
  .final-card { grid-template-columns: 1fr; padding: 36px 28px; }
}
@media (max-width: 640px) {
  .nav-inner { padding: 12px 20px; }
  .nav nav { gap: 14px; }
  .nav nav a { font-size: 0.85rem; }
  .nav nav a[href*="github.com"] { display: none; }
  .hero { padding: 60px 0 32px; }
  .meta-strip { grid-template-columns: repeat(2, 1fr); }
  .fgrid { grid-template-columns: 1fr; }
  .fcard.spotlight { grid-column: span 1; grid-template-columns: 1fr; }
  .fcard-visual { border-right: none; border-bottom: 1px solid var(--border); }
  .ref-list li { grid-template-columns: 1fr; gap: 6px; padding: 14px; }
}