:root {
  --bg: #000;
  --line: #333;
  --fg: #fff;
  --font-title: "KH Dot Dougenzaka", ui-monospace, monospace;
  --font-pixel: "KH Dot Hibiya", ui-monospace, monospace;
  --font-label: "KH Dot Hibiya 32", ui-monospace, monospace;
  color-scheme: dark;
}

/* KH Dot 像素字体（已子集化打包进 assets/fonts/） */
@font-face {
  font-family: "KH Dot Dougenzaka";
  src: url("./assets/fonts/KHDotDougenzaka.woff2") format("woff2");
  font-display: swap;
}
@font-face {
  font-family: "KH Dot Hibiya";
  src: url("./assets/fonts/KHDotHibiya.woff2") format("woff2");
  font-display: swap;
}
@font-face {
  font-family: "KH Dot Hibiya 32";
  src: url("./assets/fonts/KHDotHibiya32.woff2") format("woff2");
  font-display: swap;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow-x: hidden; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-pixel);
  height: 100dvh;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 480px;
  margin: 0 auto;
}

#title {
  margin: 0;
  padding: 16px 0;
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 18px;
  text-align: center;
  letter-spacing: 1px;
}

/* 预览框 */
#stage { flex: 1; min-height: 0; padding: 0 16px; display: flex; }
#frame {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
#preview { max-width: 100%; max-height: 100%; display: block; }
#empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: #888;
}
#empty.hidden { display: none; }
#empty img { width: 120px; }
#empty p { margin: 0; font-size: 13px; }

#panel { padding-bottom: env(safe-area-inset-bottom); }

/* 预设墨点 */
.presets { display: flex; gap: 8px; padding: 16px; overflow-x: auto; }
.preset {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  padding: 0;
  background: #000;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.preset.active { border-color: var(--fg); }
.preset svg { display: block; }

/* 滑块（2 列 3 行） */
.sliders {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
  padding: 0 16px;
}
.slider {
  position: relative;
  height: 40px;
  display: flex;
  align-items: center;
  cursor: pointer;
  touch-action: none;
  color: var(--accent);
}
.track { position: relative; width: 100%; height: 1px; background: var(--line); overflow: visible; }
.fill { position: absolute; left: 0; top: 0; height: 1px; background: var(--accent); }
.pill {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  height: 22px;
  width: 48px;
  background: #000;
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 4px;
  pointer-events: none;
}
.pill-icon { width: 12px; height: 12px; flex: 0 0 auto; display: block; }
.pill-label {
  font-family: var(--font-label);
  font-size: 12px;
  color: var(--fg);
  line-height: 1;
  white-space: nowrap;
}

/* 动作按钮 */
.actions { display: flex; gap: 16px; padding: 16px; }
.action {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: #000;
  border: 1px solid var(--fg);
  padding: 8px 18px;
  cursor: pointer;
  font-family: var(--font-pixel);
  font-size: 14px;
  letter-spacing: 1.12px;
}
.action img, .action svg { width: 22px; height: 22px; flex: 0 0 auto; }
.action span { color: var(--fg); }

/* 导出全屏层 */
.export-overlay {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 100;
  padding: env(safe-area-inset-top) 16px;
}
.export-hint { color: #fff; font-size: 15px; font-family: var(--font-pixel); }
.export-img { max-width: 100%; max-height: 80%; }
.export-close {
  padding: 8px 24px;
  background: #000;
  border: 1px solid var(--fg);
  color: var(--fg);
  font-family: var(--font-pixel);
}