* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: hidden; }
body {
  background: #F4E6DD;
  font-family: "Noto Sans JP", system-ui, sans-serif;
  color: #4A3F3B;
  -webkit-font-smoothing: antialiased;
}
input, button, select, textarea { font-family: inherit; }
input[type=date] { color: #6B5D57; }
button { -webkit-tap-highlight-color: transparent; }

::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: #E4CFC6; border-radius: 9px; }

.field { outline: none; }
.field:focus { border-color: #EAAAB8; }

.icon-btn:hover { background: #F6EAE3; }
.toolbar-btn:hover { background: #FBF0EC; }
.download-btn:hover { filter: brightness(1.05); }
.dropzone { transition: all .15s; }
.toggle-knob { transition: transform .15s; }
.toggle-track { transition: background .15s; }

input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: linear-gradient(to right, #F0E1D9, #EAAAB8);
  border-radius: 3px;
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #EF8AA0, #D9647E);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(217,100,126,.4);
  border: 2px solid #fff;
}
input[type=range]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #EF8AA0, #D9647E);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(217,100,126,.4);
  border: 2px solid #fff;
}

@media (max-width: 900px) {
  aside, main {
    min-width: 0 !important;
    max-width: none !important;
    flex-basis: 100% !important;
  }
}

/* ---- 広告枠（AdSense 手動配置）----
   操作ボタンとの間隔を空け、「広告」と表示する。配信が無いときは枠ごと隠す。 */
.ad-area { max-width: 1200px; margin: 40px auto 0; padding: 0 clamp(12px, 2.4vw, 24px); }
.ad-area__label { text-align: center; font-size: 11px; letter-spacing: 0.1em; color: #B5A49D; margin-bottom: 6px; }
.ad-area .adsbygoogle { min-height: 90px; }
.ad-area:has(.adsbygoogle[data-ad-status="unfilled"]) { display: none; }