:root {
  --bg: #0f1115;
  --bg-panel: #1a1d24;
  --bg-panel-2: #222630;
  --border: #2c313c;
  --text: #e7eaf0;
  --text-dim: #9aa2b1;
  --text-faint: #6b7280;
  --accent: #6366f1;
  --accent-hover: #7c7ff5;
  --accent-soft: rgba(99, 102, 241, 0.14);
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  background: radial-gradient(1200px 600px at 50% -10%, #1b1f2b 0%, var(--bg) 60%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* Header */
.app__brand { display: flex; align-items: center; gap: 16px; }
.app__logo { font-size: 40px; line-height: 1; }
.app__title { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; }
.app__subtitle { color: var(--text-dim); font-size: 14px; margin-top: 2px; }
.app__header { margin-bottom: 28px; }

/* Panels */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Controls */
.controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  padding: 22px 24px;
  margin-bottom: 22px;
}
.control { display: flex; flex-direction: column; gap: 8px; }
.control__label {
  font-size: 13px; font-weight: 600; color: var(--text-dim);
  display: flex; align-items: center; gap: 8px;
}
.control__value {
  background: var(--accent-soft); color: var(--accent-hover);
  padding: 1px 9px; border-radius: 999px; font-size: 12px; font-weight: 700;
}
.control__hint { font-size: 11.5px; color: var(--text-faint); }

.control__select, .control__number {
  background: var(--bg-panel-2); border: 1px solid var(--border);
  color: var(--text); border-radius: var(--radius-sm);
  padding: 10px 12px; font-size: 14px; font-family: inherit;
  transition: border-color 0.15s;
}
.control__select:focus, .control__number:focus {
  outline: none; border-color: var(--accent);
}

.control__range { -webkit-appearance: none; appearance: none; height: 6px; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 80%, var(--border) 80%);
  cursor: pointer; }
.control__range::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 18px; height: 18px;
  border-radius: 50%; background: #fff; border: 3px solid var(--accent);
  cursor: pointer; box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}
.control__range::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%; background: #fff;
  border: 3px solid var(--accent); cursor: pointer;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-panel);
  padding: 46px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, transform 0.05s;
  margin-bottom: 22px;
}
.dropzone:hover, .dropzone:focus-visible { border-color: var(--accent); background: var(--bg-panel-2); outline: none; }
.dropzone.is-drag { border-color: var(--accent); background: var(--accent-soft); }
.dropzone__icon { font-size: 34px; display: block; margin-bottom: 10px; }
.dropzone__text { font-size: 16px; font-weight: 600; }
.dropzone__sub { color: var(--text-dim); font-size: 13.5px; margin-top: 4px; }
.dropzone__formats { color: var(--text-faint); font-size: 12px; margin-top: 10px; }

/* Actionbar */
.actionbar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px; margin-bottom: 22px;
}
.actionbar__stats { display: flex; flex-wrap: wrap; gap: 20px; }
.stat { display: flex; flex-direction: column; }
.stat__label { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.04em; }
.stat__value { font-size: 16px; font-weight: 700; }
.stat--highlight .stat__value { color: var(--success); }

.actionbar__buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  font-family: inherit; font-size: 14px; font-weight: 600;
  padding: 10px 18px; border-radius: var(--radius-sm); border: 1px solid transparent;
  cursor: pointer; transition: background 0.15s, opacity 0.15s, transform 0.05s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn--secondary { background: var(--bg-panel-2); color: var(--text); border-color: var(--border); }
.btn--secondary:hover:not(:disabled) { border-color: var(--accent); }
.btn--ghost { background: transparent; color: var(--text-dim); border-color: var(--border); }
.btn--ghost:hover:not(:disabled) { color: var(--text); border-color: var(--text-dim); }

/* Progress */
.progress {
  position: relative; height: 26px; background: var(--bg-panel-2);
  border-radius: 999px; overflow: hidden; margin-bottom: 22px; border: 1px solid var(--border);
}
.progress__bar {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  transition: width 0.2s ease;
}
.progress__text {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.card {
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column;
}
.card__thumb {
  aspect-ratio: 16 / 10; background: var(--bg-panel-2);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; }
.card__name { font-size: 13px; font-weight: 600; word-break: break-all; line-height: 1.35; }
.card__meta { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-dim); flex-wrap: wrap; }
.card__arrow { color: var(--text-faint); }
.card__saving { font-weight: 700; }
.card__saving.is-good { color: var(--success); }
.card__saving.is-bad { color: var(--danger); }

.card__status {
  font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px;
  align-self: flex-start;
}
.status--pending { background: var(--bg-panel-2); color: var(--text-dim); }
.status--processing { background: var(--accent-soft); color: var(--accent-hover); }
.status--done { background: rgba(34,197,94,0.14); color: var(--success); }
.status--error { background: rgba(239,68,68,0.14); color: var(--danger); }

.card__actions { display: flex; gap: 8px; margin-top: 2px; }
.card__btn {
  flex: 1; font-family: inherit; font-size: 12px; font-weight: 600;
  padding: 7px; border-radius: 8px; cursor: pointer; border: 1px solid var(--border);
  background: var(--bg-panel-2); color: var(--text); transition: border-color 0.15s;
}
.card__btn:hover:not(:disabled) { border-color: var(--accent); }
.card__btn:disabled { opacity: 0.4; cursor: not-allowed; }
.card__btn--remove { flex: 0 0 auto; padding: 7px 10px; color: var(--text-dim); }
.card__btn--remove:hover { border-color: var(--danger); color: var(--danger); }

/* Footer */
.app__footer { margin-top: 40px; text-align: center; color: var(--text-faint); font-size: 12.5px; }

@media (max-width: 640px) {
  .controls { grid-template-columns: 1fr; }
  .actionbar { flex-direction: column; align-items: stretch; }
  .actionbar__buttons { justify-content: stretch; }
  .actionbar__buttons .btn { flex: 1; }
}