/* 画像ツール共通スタイル */
:root {
  --bg: #1a1a2e;
  --surface: #16213e;
  --border: #0f3460;
  --hover: #1a4a8a;
  --accent: #e94560;
  --cyan: #4cc9f0;
  --text: #e0e0e0;
  --text-dim: #a0a0b0;
  --white: #fff;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.container { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.tool-main { flex: 1; padding: 80px 0 40px; }
.tool-main h1 { font-size: 1.6rem; color: var(--white); margin-bottom: 6px; }
.tool-sub { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 28px; }

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--cyan);
  background: rgba(76,201,240,0.04);
}
.drop-zone p { color: var(--text-dim); margin-top: 12px; font-size: 0.95rem; }
.drop-hint { font-size: 0.8rem !important; color: var(--text-dim); opacity: 0.7; }

/* Controls */
.controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 20px 0;
  padding: 14px 20px;
  background: var(--surface);
  border-radius: 10px;
  font-size: 0.85rem;
}
.controls label { white-space: nowrap; color: var(--text-dim); }
.controls input[type="range"] {
  flex: 1;
  accent-color: var(--cyan);
  height: 6px;
}

/* Select */
.tool-select {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
}
.tool-select:focus { outline: none; border-color: var(--cyan); }

/* Input fields */
.tool-input {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.tool-input:focus { outline: none; border-color: var(--cyan); }
.tool-input::placeholder { color: var(--text-dim); }

/* Number input */
.tool-number {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.85rem;
  width: 80px;
  text-align: center;
}
.tool-number:focus { outline: none; border-color: var(--cyan); }

/* Buttons */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 8px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
  text-decoration: none;
}
.btn-primary:hover { opacity: 0.85; }

/* Results */
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
  display: flex;
  gap: 16px;
  align-items: center;
}
.result-preview {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.result-preview img { max-width: 100%; max-height: 100%; object-fit: contain; }
.result-info { flex: 1; min-width: 0; }
.result-name { font-size: 0.85rem; color: var(--white); font-weight: 500; word-break: break-all; }
.result-stats { font-size: 0.8rem; color: var(--text-dim); margin: 4px 0 10px; }
.result-saved { font-weight: 600; margin-left: 6px; }
.result-saved.positive { color: #4ade80; }
.result-saved.negative { color: var(--accent); }
.result-loading { color: var(--text-dim); font-size: 0.85rem; padding: 8px; }
.result-error { color: var(--accent); font-size: 0.85rem; }
.btn-download {
  display: inline-block;
  background: var(--cyan);
  color: var(--bg);
  padding: 6px 18px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}
.btn-download:hover { opacity: 0.85; }

/* QR specific */
.qr-output {
  text-align: center;
  margin-top: 24px;
}
.qr-output canvas {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
}

/* Inline row */
.tool-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.tool-row label { font-size: 0.85rem; color: var(--text-dim); white-space: nowrap; }

/* Responsive */
@media (max-width: 600px) {
  .tool-main { padding-top: 64px; }
  .result-card { flex-direction: column; text-align: center; }
  .result-preview { margin: 0 auto; }
  .tool-row { flex-direction: column; align-items: stretch; }
}