:root {
  --bg: #f4f8ef;
  --bg-accent: #e4f1d6;
  --surface: #ffffff;
  --surface-2: #f9fbf4;
  --text: #1f2a1f;
  --muted: #546254;
  --line: #d8e4cd;
  --camera-glow: #3f6f47;
  --active: #4d8f35;
  --active-glow: rgba(77, 143, 53, 0.38);
  --danger: #ff3b1f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  background:
    radial-gradient(circle at 15% 20%, #d9ecc2 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, #cfe7f7 0%, transparent 35%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-accent) 100%);
}

.page-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.2rem;
}

.app-header {
  text-align: left;
  margin-bottom: 1rem;
}

.app-header h1 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.6rem, 2.8vw, 2.8rem);
  letter-spacing: 0.02em;
}

.app-header p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
}

.app-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.4fr 1fr;
  align-items: stretch;
}

.camera-panel,
.bins-panel {
  background: linear-gradient(155deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow:
    0 10px 25px rgba(26, 52, 22, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.camera-panel {
  padding: 1rem;
  display: flex;
}

#webcam-container {
  position: relative;
  width: 100%;
  min-height: 320px;
  border-radius: 14px;
  border: 2px dashed #95b58f;
  background:
    linear-gradient(135deg, rgba(84, 116, 90, 0.15), rgba(56, 76, 60, 0.3)),
    repeating-linear-gradient(
      -45deg,
      rgba(230, 237, 224, 0.9),
      rgba(230, 237, 224, 0.9) 16px,
      rgba(214, 226, 204, 0.95) 16px,
      rgba(214, 226, 204, 0.95) 32px
    );
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.4), 0 8px 24px rgba(47, 72, 42, 0.3);
}

#webcam-container video,
#webcam-container canvas,
#webcam-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

#no-garbage-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1rem, 3vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  text-transform: uppercase;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
  z-index: 10;
}

#no-garbage-overlay.flashing {
  display: flex;
}

.bins-panel {
  padding: 1rem;
}

.bins-panel h2 {
  margin: 0 0 0.8rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
}

.bins-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.bin {
  border: 1px solid #d9e4d1;
  border-radius: 14px;
  padding: 0.8rem 0.7rem;
  background: #fbfdf8;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  min-height: 132px;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, filter 200ms ease;
  filter: grayscale(1) saturate(0.2) brightness(0.88);
}

.bin svg {
  width: 54px;
  height: 54px;
  stroke: #2e462f;
  fill: rgba(88, 122, 76, 0.18);
  stroke-width: 2.4;
  vector-effect: non-scaling-stroke;
}

.bin .en {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
}

.bin .jp {
  font-size: 0.82rem;
  color: var(--muted);
}

.bin:hover {
  transform: translateY(-2px);
  border-color: #b5caad;
}

.bin.active {
  filter: none;
  border-color: var(--active);
  background: linear-gradient(155deg, #effadd 0%, #f8ffea 100%);
  transform: scale(1.02);
  box-shadow: 0 0 0 2px rgba(106, 171, 82, 0.22), 0 0 22px var(--active-glow);
}

.bin.active svg {
  fill: rgba(96, 168, 75, 0.38);
  stroke: #2f6d22;
}

@media (max-width: 980px) {
  .app-layout {
    grid-template-columns: 1fr;
  }

  #webcam-container {
    min-height: min(64vh, 460px);
  }
}

@media (max-width: 560px) {
  .page-shell {
    padding: 0.85rem;
  }

  .app-header {
    margin-bottom: 0.75rem;
  }

  .camera-panel,
  .bins-panel {
    border-radius: 16px;
    padding: 0.75rem;
  }

  .bins-grid {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .bin {
    min-height: 108px;
    flex-direction: row;
    justify-content: flex-start;
    gap: 0.8rem;
    text-align: left;
    padding: 0.75rem;
  }

  .bin svg {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
  }
}