:root {
  color-scheme: light;
  --bg: #ffffff;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #c93545;
  --accent-2: #2d8f4e;
  --card-bg: #ffffff;
  --card-border: #e5e5e5;
  --topbar-fg: #1a1a1a;
}

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

.pre-launch-banner {
  position: relative;
  z-index: 3;
  background: #c93545;
  color: #ffffff;
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

body.rhubarb {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  position: relative;
  overflow-x: hidden;
}

/* Diagonal diamond lattice of rhubarb leaves on white — flying-ducks feel. */
.leaves {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.18;
  background-color: transparent;
  background-image:
    url("/assets/rhubarb_leaf.svg"),
    url("/assets/rhubarb_leaf.svg");
  background-size: 160px 160px, 160px 160px;
  background-position: 0 0, 80px 80px;
  background-repeat: repeat, repeat;
}

/* Everything above the lattice */
.topbar, .omnibox-wrap, .auth-wrap, .foot {
  position: relative;
  z-index: 1;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  color: var(--topbar-fg);
}
.topbar .brand {
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--topbar-fg);
  text-decoration: none;
}
.topbar nav { display: flex; gap: 0.4rem; align-items: center; }
.topbar nav a, .topbar nav .pill {
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--card-border);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.85rem;
  background: #ffffff;
}
.topbar nav a:hover { background: #fafafa; cursor: pointer; }
.topbar nav .pill { background: #fafafa; }

.toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  border-radius: 999px;
}
.toggle-icon img { width: 2rem; height: 2rem; display: block; }
.toggle-icon:hover { background: #fafafa; }

.omnibox-wrap {
  min-height: calc(100vh - 8rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  gap: 1rem;
}
/* Once a conversation exists, switch to chat layout — conversation grows above,
   omnibox anchors lower, covenant smallens. */
.omnibox-wrap.chatting {
  justify-content: flex-start;
  padding-top: 1rem;
  gap: 0.75rem;
}
.omnibox-wrap.chatting .covenant {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  opacity: 0.65;
}
.omnibox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 0.4rem 0.4rem 0.4rem 1.25rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  width: min(36rem, 90vw);
}
.omnibox input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  font-size: 1.05rem;
  color: var(--ink);
  padding: 0.5rem 0;
}
.omnibox input::placeholder { color: var(--muted); }

.mic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.mic img { width: 2.4rem; height: 2.4rem; display: block; }
.mic:hover img { filter: brightness(1.05); }

.conversation {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: min(48rem, 95vw);
  max-height: 60vh;
  overflow-y: auto;
}
.conversation li {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 0.6rem 0.9rem;
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.45;
  white-space: pre-wrap;
}
.conversation li.user {
  align-self: flex-end;
  background: #f4eee5;
  border-color: #d8c6a4;
  max-width: 80%;
}
.conversation li.assistant {
  align-self: flex-start;
  max-width: 90%;
}
.conversation li.assistant.thinking {
  color: var(--muted);
  font-style: italic;
}
.conversation a {
  color: var(--accent);
  text-decoration: underline;
}

.covenant {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.25rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.01em;
}
.covenant li::before { content: "· "; opacity: 0.5; }
.covenant li:first-child::before { content: ""; }

.foot {
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
}
.foot a { color: var(--accent); }
.foot .dot { padding: 0 0.5rem; }

/* ----- login / register cards ----- */
.auth-wrap {
  min-height: calc(100vh - 8rem);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.auth-wrap .card {
  width: min(24rem, 95vw);
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.auth-wrap h1 { margin: 0 0 0.5rem; font-size: 1.5rem; color: var(--accent); }
.auth-wrap label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.85rem; color: var(--muted); }
.auth-wrap input {
  font: inherit;
  font-size: 1rem;
  padding: 0.5rem 0.7rem;
  border: 1px solid var(--card-border);
  border-radius: 0.4rem;
  background: #ffffff;
  color: var(--ink);
}
.auth-wrap button {
  margin-top: 0.5rem;
  padding: 0.6rem 1rem;
  border: 0;
  border-radius: 0.4rem;
  background: var(--accent);
  color: #ffffff;
  font: inherit;
  font-size: 1rem;
  cursor: pointer;
}
.auth-wrap button:hover { filter: brightness(1.08); }
.error { color: var(--accent); font-size: 0.85rem; margin: 0; }
.muted { color: var(--muted); font-size: 0.85rem; margin: 0; }
.muted a { color: var(--accent); }