:root {
  color-scheme: light;
  --bg: #e2e2e2;
  --card: #f3f3f3;
  --ink: #1b1d22;
  --muted: #5e6573;
  --line: #e3e5ea;
  --accent: #2c5dcd;
  --accent-ink: #ffffff;
  --canvas: #f8f8f8;
  --side: 244px;
  --dock: 12px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #181818;
  --card: #141414;
  --ink: #f3f3f3;
  --muted: #8e8e8e;
  --line: #2c2c2c;
  --accent: #f3f3f3;
  --accent-ink: #111111;
  --canvas: #101010;
}
* { box-sizing: border-box; scrollbar-width: none; }
*::-webkit-scrollbar { width: 0; height: 0; display: none; }
html, body { height: 100%; background: var(--canvas); }
body {
  margin: 0;
  color: var(--ink);
  font: 400 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1, p { margin: 0; }
button, input, textarea { font: inherit; color: inherit; }
a { color: inherit; }

.screen {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}
.land, .gate {
  width: min(420px, 100%);
  display: grid;
  gap: 14px;
  justify-items: start;
}
.gate {
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
}
.eyebrow { color: var(--muted); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; }
.muted { color: var(--muted); }
.land h1, .gate h1 { font-size: 26px; font-weight: 650; }
.err { margin: 0; color: #a33b3b; }
:root[data-theme="dark"] .err { color: #ffb4b4; }
.field { display: grid; gap: 6px; width: 100%; }
.field span { color: var(--muted); font-size: 13px; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
  padding: 10px 12px;
}
textarea { resize: none; min-height: 44px; max-height: 120px; border: 0; padding: 8px 0; outline: none; }
.btn, .link {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
  text-decoration: none;
}
.link--quiet {
  background: transparent;
  color: var(--muted);
  padding: 0;
}
.btn:disabled { opacity: .55; cursor: default; }

.app {
  min-height: 100%;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: var(--side) 1fr;
  gap: var(--dock);
  padding: var(--dock);
}
.side {
  position: sticky;
  top: var(--dock);
  align-self: start;
  height: calc(100dvh - (var(--dock) * 2));
  display: flex;
}
.side__isle {
  flex: 1;
  min-height: 0;
  border-radius: 16px;
  padding: 18px 12px;
  background: var(--card);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.side nav { display: grid; gap: 2px; }
.side__foot { margin-top: auto; }
.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
}
.nav svg { width: 18px; height: 18px; flex: none; display: block; }
.nav.is-on { background: var(--bg); }
.work { min-width: 0; min-height: 0; display: flex; }
#view {
  flex: 1;
  min-height: 0;
  padding: 20px;
  display: grid;
  align-content: start;
  gap: 14px;
}
#view.is-ai { grid-template-rows: auto minmax(0, 1fr); align-content: stretch; }
.head h1 { font-size: 26px; font-weight: 650; }
.blank { display: grid; place-items: center; min-height: 240px; }
.blank__card {
  display: grid;
  justify-items: center;
  gap: 14px;
  width: min(240px, 100%);
  padding: 36px 28px 32px;
  border-radius: 20px;
  background: var(--card);
  color: var(--muted);
  text-align: center;
}
.blank__card svg { width: 28px; height: 28px; color: var(--ink); }
.ai { min-height: 0; display: flex; flex-direction: column; gap: 12px; }
.ai__log {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ai__msg {
  margin: 0;
  max-width: min(640px, 92%);
  padding: 8px 12px;
  border-radius: 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.ai__msg--user { align-self: flex-end; background: color-mix(in srgb, var(--ink) 10%, transparent); }
.ai__msg--bot { align-self: flex-start; background: var(--card); }
.ai__island {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 6px 6px 6px 14px;
  border-radius: 16px;
  background: var(--card);
}
.ai__go {
  width: 36px;
  height: 36px;
  flex: none;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 10px;
  background: var(--ink);
  color: var(--canvas);
  cursor: pointer;
}
.ai__go:disabled { opacity: .45; cursor: default; }
.ai__go svg { display: block; }

@media (hover: hover) and (pointer: fine) {
  .nav:hover { background: color-mix(in srgb, var(--ink) 7%, transparent); }
  .nav.is-on:hover { background: var(--bg); }
  .link--quiet:hover { color: var(--ink); }
}
@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .side__isle { flex: none; }
}