:root {
  --bg: #0a0b0e;
  --panel: #121419;
  --line: #23262e;
  --text: #e6e8ec;
  --muted: #7c828d;
  --accent: #5eead4;
  --accent-dim: #2dd4bf;
  --warn: #f0a35e;
  --me: #1f6feb;
  --radius: 14px;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
}

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

body {
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(94, 234, 212, 0.06), transparent),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

#app {
  width: 100%;
  max-width: 560px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 2px;
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--mono); font-weight: 600; letter-spacing: 0.5px; }
.brand::before { content: '◆ '; color: var(--accent); }
.me { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.screen { display: none; flex: 1; flex-direction: column; justify-content: center; gap: 18px; padding: 32px 0; }
.screen.active { display: flex; }

h1 { font-size: 34px; font-weight: 700; line-height: 1.15; }
.accent { color: var(--accent); }
.sub { color: var(--muted); font-size: 15px; line-height: 1.5; }
.warn { color: var(--warn); font-size: 13px; line-height: 1.5; }

.stack { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }

button {
  font-family: var(--sans);
  font-size: 15px;
  padding: 13px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s, transform 0.05s, background 0.15s;
}
button:hover { border-color: var(--accent-dim); }
button:active { transform: translateY(1px); }
button.primary { background: var(--accent); color: #04201b; border-color: var(--accent); font-weight: 600; }
button.primary:hover { background: var(--accent-dim); }
button.ghost { background: transparent; }
button.small { padding: 7px 13px; font-size: 13px; }

.handle-card {
  font-family: var(--mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--accent);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  word-break: break-word;
}

/* chat */
.chat-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
}
.status { font-size: 14px; color: var(--muted); font-family: var(--mono); }
.messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
  min-height: 200px;
}
.bubble {
  max-width: 78%;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.4;
  word-break: break-word;
}
.bubble.me { align-self: flex-end; background: var(--me); color: #fff; border-bottom-right-radius: 4px; }
.bubble.them { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); border-bottom-left-radius: 4px; }

.composer { display: flex; gap: 8px; padding: 14px 0 24px; }
.composer input {
  flex: 1;
  padding: 13px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: 15px;
  font-family: var(--sans);
}
.composer input:focus { outline: none; border-color: var(--accent-dim); }
.composer input:disabled { opacity: 0.5; }

/* rate */
.rate-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.score {
  aspect-ratio: 1;
  font-family: var(--mono);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.score:hover { background: var(--accent); color: #04201b; border-color: var(--accent); }