/* ---------- theme tokens ---------- */
/* Accent = Codewith emerald, rgb(5,150,105) — same constant the TUI uses. */

:root {
  --bg: #f6faf8;
  --bg-raised: #ffffff;
  --bg-inset: #ecf3ef;
  --border: #d9e5df;
  --text: #14201b;
  --muted: #5d6f67;
  --accent: #059669;
  --accent-2: #34d399;
  --ok: #059669;
  --term-bg: #0c1210;
  --term-border: #22302a;
  --term-text: #d8e2dc;
  --term-dim: #6f7f77;
  --term-em: #10b981;
  --shadow: 0 1px 2px rgb(20 32 27 / 0.05), 0 8px 24px -12px rgb(20 32 27 / 0.14);
  --display: "Martian Mono", ui-monospace, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0b100e;
  --bg-raised: #121a16;
  --bg-inset: #16201b;
  --border: #24302a;
  --text: #dde7e1;
  --muted: #8da39a;
  --accent: #10b981;
  --accent-2: #34d399;
  --ok: #34d399;
  --term-bg: #090e0c;
  --term-border: #1e2a24;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 12px 32px -16px rgb(0 0 0 / 0.6);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b100e;
    --bg-raised: #121a16;
    --bg-inset: #16201b;
    --border: #24302a;
    --text: #dde7e1;
    --muted: #8da39a;
    --accent: #10b981;
    --accent-2: #34d399;
    --ok: #34d399;
    --term-bg: #090e0c;
    --term-border: #1e2a24;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 12px 32px -16px rgb(0 0 0 / 0.6);
    color-scheme: dark;
  }
}

/* ---------- base ---------- */

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

code { font-family: var(--mono); font-size: 0.9em; }

h1, h2, h3 { font-family: var(--display); letter-spacing: -0.03em; }

.em { color: var(--accent); }

.icon {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- nav ---------- */

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1020px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
}

.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { border-radius: 7px; display: block; }
.brand-word {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.04em;
}
.brand-word em { font-style: normal; color: var(--accent); }

.nav-links { display: flex; align-items: center; gap: 1.4rem; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-raised);
  color: var(--muted);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.theme-toggle .icon { width: 19px; height: 19px; display: none; }
.theme-toggle[data-mode="system"] .icon-system { display: block; }
.theme-toggle[data-mode="light"] .icon-light { display: block; }
.theme-toggle[data-mode="dark"] .icon-dark { display: block; }

/* ---------- hero ---------- */

main { max-width: 1020px; margin: 0 auto; padding: 0 1.5rem; }

.hero { text-align: center; padding: 4rem 0 1.6rem; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  margin-bottom: 1.6rem;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

.hero h1 {
  font-size: clamp(1.45rem, 3.6vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
}

.grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  color: var(--muted);
  max-width: 560px;
  margin: 1.2rem auto 2.1rem;
  font-size: 0.97rem;
}

.install-box {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 12px;
  padding: 0.95rem 1.2rem;
  box-shadow: var(--shadow);
}
.install-box pre { overflow-x: auto; }
.install-box code { font-size: 0.98rem; color: var(--term-text); }
.install-box .dim { color: var(--term-dim); }

.copy {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--term-dim);
  background: transparent;
  border: 1px solid var(--term-border);
  border-radius: 7px;
  padding: 0.3rem 0.65rem;
  cursor: pointer;
}
.copy:hover { color: var(--term-em); border-color: var(--term-em); }

.alt-install { color: var(--muted); font-size: 0.92rem; margin-top: 1.2rem; }
.alt-install code { color: var(--text); }

.dim { color: var(--muted); }

/* ---------- interactive TUI demo ---------- */

.demo { padding: 2rem 0 2.4rem; }

.demo-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.38rem 0.95rem;
  cursor: pointer;
}
.tab:hover { color: var(--text); }
.tab.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.demo-caption {
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 620px;
  margin: 0 auto 1.1rem;
  min-height: 1.4em;
}

.tui {
  max-width: 760px;
  margin: 0 auto;
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tui-titlebar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--term-border);
}
.tui-titlebar span { width: 11px; height: 11px; border-radius: 50%; background: var(--term-border); }
.tui-titlebar b {
  margin-left: auto;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--term-dim);
}

.tui-screen {
  position: relative;
  padding: 1.1rem 1.25rem 0.9rem;
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--term-text);
  min-height: 26rem;
  display: flex;
  flex-direction: column;
}
.tui-screen .dim { color: var(--term-dim); }
.tui-screen .em { color: var(--term-em); }
.tui-screen .ok { color: var(--term-em); }
.tui-screen b { font-weight: 600; color: var(--term-text); }
.tui-screen .spacer { height: 0.9em; }

.tui-header {
  border: 1px solid var(--term-border);
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  margin-bottom: 0.9rem;
}

.tui-header > div, .tui-help > div, .tui-log > div { white-space: pre-wrap; }

.tui-help { margin-bottom: 0.9rem; }

.tui-log { flex: 1; }
.tui-log .user { color: var(--term-dim); }
.tui-log .caret { color: var(--term-em); }

/* goal status panel rendered inside the demo log */
.goal-card {
  border: 1px solid var(--term-em);
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  margin: 0.5rem 0;
  background: rgb(16 185 129 / 0.06);
}
.goal-card.done { border-color: var(--term-em); background: rgb(16 185 129 / 0.12); }
.goal-card .goal-row { white-space: pre-wrap; }
.goal-card .goal-row b { color: var(--term-em); }
.goal-card .goal-cmds { margin-top: 0.3rem; font-size: 0.96em; }

.tui-popup {
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: 5.4rem;
  background: var(--term-bg);
  border: 1px solid var(--term-em);
  border-radius: 8px;
  padding: 0.5rem 0;
  box-shadow: 0 -8px 24px rgb(0 0 0 / 0.45);
}
.popup-title {
  color: var(--term-dim);
  font-size: 0.76rem;
  padding: 0 0.9rem 0.35rem;
}
.popup-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.12rem 0.9rem;
}
.popup-row.sel { background: rgb(16 185 129 / 0.18); color: var(--term-em); }
.popup-row.sel .dim { color: var(--term-em); opacity: 0.75; }

.tui-composer {
  border: 1px solid var(--term-border);
  border-radius: 8px;
  padding: 0.5rem 0.9rem;
  margin-top: 0.9rem;
  display: flex;
  align-items: baseline;
  min-height: 2.5rem;
}
.tui-composer .caret { color: var(--term-em); font-weight: 600; }

.cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.15em;
  margin-left: 2px;
  background: var(--term-em);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

.tui-hints {
  display: flex;
  gap: 1.1rem;
  align-items: center;
  padding: 0.5rem 0.2rem 0.4rem;
  color: var(--term-dim);
  font-family: var(--mono);
  font-size: 0.74rem;
}
.tui-hints b { color: var(--term-text); font-weight: 500; }
#tuiReplay {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--term-dim);
  background: transparent;
  border: 1px solid var(--term-border);
  border-radius: 6px;
  padding: 0.15rem 0.55rem;
  cursor: pointer;
}
#tuiReplay:hover { color: var(--term-em); border-color: var(--term-em); }

/* ---------- providers ---------- */

.section-lead {
  color: var(--muted);
  max-width: 600px;
  margin: -0.9rem auto 1.9rem;
  font-size: 0.98rem;
}

.providers { text-align: center; padding: 2.4rem 0 1.2rem; }

.providers h2 {
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 1.75rem;
}

.provider-group { margin-bottom: 1.4rem; }

.providers-label {
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 0.7rem;
}

.pills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  max-width: 820px;
  margin: 0 auto;
}
.pills li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  border-radius: 999px;
  padding: 0.26rem 0.85rem 0.26rem 0.3rem;
}
.pills li i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  flex: none;
}
.pills li img { width: 15px; height: 15px; object-fit: contain; display: block; }

.provider-group.highlight .pills li {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  color: var(--text);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}

.providers-note { color: var(--muted); font-size: 0.85rem; margin-top: 0.6rem; }

/* ---------- features ---------- */

.features { padding: 2.5rem 0; }
.features .section-lead { margin: -0.9rem 0 1.9rem; max-width: 680px; }

.features h2, .oss h2 {
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 1.75rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.card-icon { color: var(--accent); margin-bottom: 0.8rem; }
.card h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.45rem; }
.card p { color: var(--muted); font-size: 0.93rem; }
.card code { color: var(--text); background: var(--bg-inset); border-radius: 4px; padding: 0.05em 0.35em; }

/* ---------- oss ---------- */

.oss { padding: 2.5rem 0 4.5rem; }

.oss-inner {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}
.oss-inner p { color: var(--muted); max-width: 560px; margin: 0 auto 1.5rem; }

.button {
  display: inline-block;
  font-family: var(--mono);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.65rem 1.4rem;
  border-radius: 10px;
}
.button:hover { text-decoration: none; background: color-mix(in srgb, var(--accent) 88%, #000); }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 2rem 1.5rem 2.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}
footer .fine { font-size: 0.78rem; margin-top: 0.5rem; opacity: 0.75; }

/* ---------- small screens ---------- */

@media (max-width: 560px) {
  .nav-links { gap: 1rem; }
  .install-box { width: 100%; justify-content: space-between; }
  .tui-screen { font-size: 0.74rem; min-height: 24rem; }
  .demo-tabs { flex-wrap: wrap; }
}