:root {
  --bg: #0a0a0a;
  --panel: #141414;
  --text: #ccc;
  --heading: #fff;
  --caption: #a7a7a7;
  --green: #aeefa1;
  --line: rgba(245, 245, 245, 0.08);
  --user: #1c2a1f;
  --safe-x: max(1rem, env(safe-area-inset-left), env(safe-area-inset-right));
  --safe-bottom: max(0.75rem, env(safe-area-inset-bottom));
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Nunito Sans", sans-serif;
}

.shell {
  max-width: 42rem;
  margin: 0 auto;
  height: 100dvh;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 1rem var(--safe-x) var(--safe-bottom);
}

.top h1 {
  margin: 0.15rem 0 0;
  font-family: Bitter, serif;
  font-size: 1.6rem;
  color: var(--heading);
  font-weight: 600;
}

.mark {
  margin: 0;
  color: var(--green);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
}

.status {
  margin: 0.4rem 0 0;
  color: var(--caption);
  min-height: 1.2rem;
}

.log {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1rem 0;
}

.bubble {
  max-width: 85%;
  padding: 0.75rem 0.9rem;
  border-radius: 1rem;
  white-space: pre-wrap;
  line-height: 1.45;
  background: var(--panel);
  border: 1px solid var(--line);
}

.bubble.user {
  align-self: flex-end;
  background: var(--user);
  border-color: rgba(174, 239, 161, 0.25);
}

.bubble.advice,
.bubble.outro,
.bubble.outro_praise {
  border-color: rgba(174, 239, 161, 0.35);
}

.result {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.result h2 {
  margin: 0 0 0.75rem;
  color: var(--heading);
  font-family: Bitter, serif;
  font-size: 1.25rem;
}

.scores {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.score {
  background: #0a0a0a;
  border-radius: 0.75rem;
  padding: 0.6rem;
  text-align: center;
}

.score strong {
  display: block;
  color: var(--green);
  font-size: 1.4rem;
}

.score span {
  color: var(--caption);
  font-size: 0.8rem;
}

.result h3 {
  margin: 0.9rem 0 0.25rem;
  font-size: 0.85rem;
  color: var(--green);
  font-weight: 600;
}

.result p {
  margin: 0;
  white-space: pre-wrap;
}

.composer {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

textarea {
  flex: 1;
  resize: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--heading);
  border-radius: 0.9rem;
  padding: 0.75rem 0.9rem;
  font: inherit;
  max-height: 8rem;
}

.typing {
  display: flex;
  align-items: center;
  gap: 0.28rem;
  min-height: 1.35rem;
  margin: 0 0 0.45rem;
  padding-left: 0.35rem;
}

.typing[hidden] {
  display: none;
}

.typing span {
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 50%;
  background: var(--caption);
  opacity: 0.25;
  animation: typing-dot 1.2s infinite;
}

.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
  0%, 100% { opacity: 0.25; }
  20%, 70% { opacity: 1; }
}

button {
  border: 0;
  background: var(--green);
  color: #0a0a0a;
  font: inherit;
  font-weight: 600;
  border-radius: 0.9rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.4;
  cursor: default;
}

.gate {
  margin: auto;
  text-align: center;
  color: var(--heading);
  font-size: 1.1rem;
  padding: 3rem 1rem;
}