:root {
  --green-dark: #2f5018;
  --green: #5a8a3a;
  --green-mid: #6a9c3a;
  --green-light: #cce4a8;
  --cream: #fdfbf2;
  --warm: #f5f0d6;
  --ink: #2b3a1c;
  --error-bg: #fde7e0;
  --error-ink: #913320;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "SF Pro Rounded", "Avenir Next Rounded", "Hiragino Maru Gothic Pro", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 18px;
  color: var(--ink);
  background-color: var(--warm);
  background-image: url("leaves.svg");
  background-repeat: repeat;
  background-size: 380px 380px;
  background-attachment: fixed;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 28px 18px calc(48px + env(safe-area-inset-bottom));
}

header {
  text-align: center;
  margin-bottom: 22px;
}

h1 {
  margin: 8px 0 4px;
  font-size: 2rem;
  color: var(--green-dark);
  letter-spacing: 0.5px;
}

.tagline {
  margin: 0;
  font-size: 1.1rem;
  color: var(--green);
  font-weight: 600;
}

section {
  background: var(--cream);
  border: 2px solid var(--green-light);
  border-radius: 24px;
  padding: 22px 20px;
  margin-bottom: 18px;
  box-shadow: 0 4px 18px rgba(60, 80, 30, 0.14);
}

section h2 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  color: var(--green-dark);
}

.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.cat {
  background: white;
  border: 3px solid var(--green-light);
  border-radius: 18px;
  padding: 16px 6px 12px;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.08s ease, border-color 0.1s ease, background 0.1s ease;
}

.cat .emoji {
  display: block;
  font-size: 2.4rem;
  line-height: 1;
}

.cat .label {
  display: block;
  margin-top: 6px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--green-dark);
}

.cat:hover { transform: translateY(-2px); }
.cat:active { transform: translateY(0); }
.cat.selected {
  border-color: var(--green);
  background: var(--green-light);
}

.shoot-btn {
  display: block;
  text-align: center;
  background: var(--green);
  color: white;
  padding: 22px;
  border-radius: 18px;
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 0 var(--green-dark);
  user-select: none;
}

.shoot-btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--green-dark);
}

.shoot-btn .emoji {
  margin-right: 6px;
  font-size: 1.4rem;
}

.shoot-btn input[type=file] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
}

.hint {
  text-align: center;
  margin: 12px 0 0;
  color: #7a8064;
  font-size: 0.92rem;
}

#preview {
  display: block;
  width: 100%;
  max-height: 380px;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 14px;
  background: #eee;
}

.loading {
  text-align: center;
  padding: 14px 8px;
  font-size: 1.05rem;
  color: var(--green-dark);
  font-weight: 600;
}

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 3px solid var(--green-light);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: -3px;
  margin-right: 8px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.answer {
  white-space: pre-wrap;
  font-size: 1.15rem;
  line-height: 1.55;
  padding: 4px 2px 2px;
}

.error {
  background: var(--error-bg);
  color: var(--error-ink);
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 0.98rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.actions button {
  flex: 1 1 140px;
  background: var(--green);
  color: white;
  border: none;
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  box-shadow: 0 3px 0 var(--green-dark);
}

.actions button:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--green-dark);
}

#again {
  background: white;
  color: var(--green-dark);
  border: 2px solid var(--green-light);
  box-shadow: 0 3px 0 var(--green-light);
}

#again:active {
  box-shadow: 0 1px 0 var(--green-light);
}