:root {
  --bg: #0f0f10;
  --panel: #171719;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f3f3f2;
  --muted: rgba(255, 255, 255, 0.66);
  --danger: #ff9a9a;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background: radial-gradient(circle at 20% 0%, rgba(255,255,255,0.04), transparent 25%), #0f0f10;
  color: var(--text);
  font-family: Helvetica, Arial, sans-serif;
}
button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
.screen {
  min-height: 100vh;
  display: none;
  place-items: center;
  padding: 24px;
}
.screen.show { display: grid; }
.lock-card,
.panel {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.lock-card {
  width: min(92vw, 468px);
  padding: 30px 28px 28px;
}
.lock-brand,
.brand-title,
.brand-overlay {
  font-family: "Avenir Next", "Helvetica Neue", Helvetica, Arial, sans-serif;
  letter-spacing: 0.14em;
  font-weight: 600;
}
.lock-brand {
  font-size: 18px;
  margin-bottom: 18px;
}
.manifesto {
  margin: 0 0 22px;
}
.manifesto-en,
.manifesto-ja {
  margin: 0;
}
.manifesto-en {
  color: #f3f3f2;
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.manifesto-ja {
  color: var(--muted);
  line-height: 1.8;
  font-size: 14px;
}
.text-input {
  width: 100%;
  height: 48px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.22);
  color: #fff;
  padding: 0 14px;
  outline: none;
}
.text-input::placeholder { color: rgba(255,255,255,0.36); }
.wide { width: 100%; }
.primary-btn,
.secondary-btn,
.ghost-btn,
.mode-btn {
  height: 46px;
  border-radius: 14px;
  border: 0;
  padding: 0 16px;
  cursor: pointer;
  transition: transform 120ms ease, opacity 120ms ease, background 120ms ease, border-color 120ms ease;
}
.primary-btn:active,
.secondary-btn:active,
.ghost-btn:active,
.mode-btn:active { transform: scale(0.985); }
.primary-btn[disabled],
.secondary-btn[disabled],
.ghost-btn[disabled] { opacity: 0.45; cursor: default; }
.primary-btn {
  background: #f4f4f1;
  color: #111;
  font-weight: 600;
}
.secondary-btn {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
}
.ghost-btn {
  background: transparent;
  color: rgba(255,255,255,0.86);
  border: 1px solid rgba(255,255,255,0.14);
}
.mode-btn {
  background: transparent;
  color: rgba(255,255,255,0.86);
  border: 1px solid rgba(255,255,255,0.14);
  min-width: 108px;
}
.mode-btn.active {
  background: rgba(255,255,255,0.94);
  color: #111;
  border-color: rgba(255,255,255,0.94);
}
.error-text {
  min-height: 20px;
  padding-top: 10px;
  color: var(--danger);
  font-size: 13px;
}
.app-screen {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px 16px 40px;
}
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
.brand-title { font-size: 17px; }

.controls-panel {
  padding: 18px;
  margin-bottom: 18px;
}
.panel-title {
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.controls-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.controls-grid.narrow-gap { gap: 10px; }
.mode-wrap {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}
.field-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}
.status-text {
  min-height: 22px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}
.preview-wrap {
  width: 100%;
}
.photo-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 24px;
  overflow: hidden;
  background: radial-gradient(circle at 70% 20%, rgba(255,220,180,.22), transparent 22%), radial-gradient(circle at 25% 35%, rgba(180,220,255,.16), transparent 24%), linear-gradient(180deg, rgba(32,32,36,.95), rgba(10,10,12,1));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.photo-stage img,
.camera-preview {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #121214;
}
.camera-preview {
  position: absolute;
  inset: 0;
  display: none;
  object-fit: cover;
}
.photo-stage.camera-live .camera-preview { display: block; }
.photo-stage.camera-live img { visibility: hidden; }
.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,0.42);
  letter-spacing: 0.06em;
  font-size: 14px;
  pointer-events: none;
  text-align: center;
  padding: 24px;
}
.brand-overlay {
  position: absolute;
  top: 18px;
  left: 18px;
  color: #fff;
  font-size: 17px;
  text-shadow: 0 2px 8px rgba(0,0,0,.78);
  pointer-events: none;
  z-index: 2;
}
.poem-overlay {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 86px;
  color: #fff;
  white-space: pre-line;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.58;
  text-shadow: 0 2px 8px rgba(0,0,0,.88);
  pointer-events: none;
  z-index: 2;
}

.stage-actions {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.stage-btn {
  height: 48px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.14);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(12px);
  background: rgba(10,10,12,0.46);
  box-shadow: 0 8px 28px rgba(0,0,0,0.22);
}
.stage-btn[disabled] {
  opacity: 0.4;
  cursor: default;
}
.stage-btn:active {
  transform: scale(0.985);
}
.stage-btn-main {
  background: rgba(255,255,255,0.94);
  color: #111;
  font-weight: 600;
}
.stage-btn-sub {
  background: rgba(10,10,12,0.42);
}
.photo-stage.camera-live .stage-btn-main {
  background: #ffffff;
}
.photo-stage.camera-live .empty-state {
  display: none !important;
}

.mode-badge {
  position: absolute;
  right: 16px;
  top: 16px;
  z-index: 2;
  padding: 8px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: rgba(255,255,255,0.9);
  background: rgba(0,0,0,0.26);
  border: 1px solid rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
}
@media (max-width: 760px) {
  .app-screen { padding: 14px 12px 28px; }
  .controls-grid,
  .controls-grid.two { grid-template-columns: 1fr; }
  .stage-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mode-wrap { flex-wrap: wrap; }
  .photo-stage { width: 100%; border-radius: 18px; }
  .brand-overlay { top: 14px; left: 14px; font-size: 15px; }
  .mode-badge { top: 12px; right: 12px; }
  .poem-overlay { left: 16px; right: 16px; bottom: 140px; }
}



.lock-card .text-input {
  margin-bottom: 12px;
}

@media (max-width: 680px) {
  .lock-card {
    width: min(94vw, 468px);
    padding: 26px 20px 22px;
  }
  .manifesto-en {
    font-size: 14px;
  }
  .manifesto-ja {
    font-size: 13px;
    line-height: 1.75;
  }
}