:root {
  --md-sys-color-primary: #7c5cbf;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ecdeff;
  --md-sys-color-on-primary-container: #2a0054;
  --md-sys-color-secondary-container: #e8def8;
  --md-sys-color-on-secondary-container: #1d192b;
  --md-sys-color-error: #b3261e;
  --md-sys-color-surface: #fef7ff;
  --md-sys-color-on-surface: #1d1b20;
  --md-sys-color-on-surface-variant: #49454f;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f7f2fb;
  --md-sys-color-surface-container: #f3edf7;
  --md-sys-color-surface-container-highest: #e6e0e9;
  --md-sys-color-outline: #79747e;
  --md-sys-color-outline-variant: #cac4d0;
  --md-sys-color-inverse-surface: #322f35;
  --md-sys-color-inverse-on-surface: #f5eff7;
  --md-sys-color-inverse-primary: #d0bcff;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 28px;
  --md-sys-shape-corner-full: 9999px;
  --md-sys-motion-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --md-sys-color-primary: #d0bcff;
    --md-sys-color-on-primary: #381e72;
    --md-sys-color-primary-container: #4f378b;
    --md-sys-color-on-primary-container: #ecdeff;
    --md-sys-color-secondary-container: #4a4458;
    --md-sys-color-on-secondary-container: #e8def8;
    --md-sys-color-error: #f2b8b5;
    --md-sys-color-surface: #141218;
    --md-sys-color-on-surface: #e6e0e9;
    --md-sys-color-on-surface-variant: #cac4d0;
    --md-sys-color-surface-container-lowest: #0f0d13;
    --md-sys-color-surface-container-low: #1d1b20;
    --md-sys-color-surface-container: #211f26;
    --md-sys-color-surface-container-highest: #36343b;
    --md-sys-color-outline: #938f99;
    --md-sys-color-outline-variant: #49454f;
    --md-sys-color-inverse-surface: #e6e0e9;
    --md-sys-color-inverse-on-surface: #322f35;
    --md-sys-color-inverse-primary: #7c5cbf;
  }
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── TOP APP BAR ── */
.top-app-bar {
  background: var(--md-sys-color-surface-container);
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.top-app-bar .material-symbols-outlined { color: var(--md-sys-color-primary); font-size: 24px; }
.top-app-bar h1 { font-size: 20px; font-weight: 500; }

/* ── LAYOUT ── */
.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 20px;
  padding: 20px;
  width: 100%;
  align-items: start;
}
.output-sticky {
  position: sticky;
  top: 84px;
}
@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .output-sticky {
    position: static;
  }
}

/* ── SECTION LABEL ── */
.section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--md-sys-color-primary);
}

/* ── USER LIST ── */
.user-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-full);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 120ms, border-color 120ms, color 120ms;
}
.user-chip .material-symbols-outlined { font-size: 16px; }
.user-chip:hover {
  background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-primary);
}
.user-chip.active {
  background: var(--md-sys-color-primary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-primary-container);
}
.empty-msg {
  font-size: 13px;
  color: var(--md-sys-color-on-surface-variant);
}
.empty-msg.error { color: var(--md-sys-color-error); }

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--md-sys-color-outline-variant); }

/* ── CARD ── */
.card {
  background: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-extra-large);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}
.card-title {
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-title .material-symbols-outlined { font-size: 20px; color: var(--md-sys-color-primary); }

/* ── FIELD ── */
.field { display: flex; flex-direction: column; gap: 4px; }
.field label {
  font-size: 11px;
  font-weight: 500;
  color: var(--md-sys-color-on-surface-variant);
  padding-left: 2px;
}
.field input {
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-small);
  outline: none;
  transition: border-color 150ms, box-shadow 150ms;
  min-width: 0;
}
.field input:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--md-sys-color-primary) 12%, transparent);
}
.field input::placeholder { color: var(--md-sys-color-on-surface-variant); opacity: 0.5; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: var(--md-sys-shape-corner-full);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: box-shadow 120ms, background 120ms;
  white-space: nowrap;
}
.btn .material-symbols-outlined { font-size: 16px; }
.btn-filled  { background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
.btn-filled:hover { box-shadow: 0 2px 8px color-mix(in srgb, var(--md-sys-color-primary) 40%, transparent); }
.btn-tonal   { background: var(--md-sys-color-secondary-container); color: var(--md-sys-color-on-secondary-container); }
.btn-tonal:hover { box-shadow: 0 1px 4px color-mix(in srgb, var(--md-sys-color-outline) 30%, transparent); }
.btn-outlined { background: transparent; color: var(--md-sys-color-primary); border: 1px solid var(--md-sys-color-outline); }
.btn-outlined:hover { background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent); }
.btn-outlined-error { background: transparent; color: var(--md-sys-color-error); border: 1px solid var(--md-sys-color-error); }
.btn-outlined-error:hover { background: color-mix(in srgb, var(--md-sys-color-error) 8%, transparent); }

.row-btns { display: flex; gap: 8px; flex-wrap: wrap; }

/* ── OUTPUT ── */
.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.css-output {
  background: var(--md-sys-color-surface-container-highest);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 14px;
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--md-sys-color-on-surface);
  overflow-y: auto;
  overflow-x: hidden;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: calc(100vh - 200px);
  border: 1px solid var(--md-sys-color-outline-variant);
}

/* シンタックスハイライト */
.tok-selector { color: #7c5cbf; font-weight: 500; }
.tok-prop     { color: #1a6ea0; }
.tok-value    { color: #276e42; }
.tok-comment  { color: var(--md-sys-color-outline); font-style: italic; }
.tok-brace    { color: var(--md-sys-color-on-surface-variant); }
@media (prefers-color-scheme: dark) {
  .tok-selector { color: #d0bcff; }
  .tok-prop     { color: #88c9f5; }
  .tok-value    { color: #7ecfa0; }
}

/* ── SNACKBAR ── */
.snackbar {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(70px);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 12px 18px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 100;
  transition: transform 200ms var(--md-sys-motion-decelerate), opacity 200ms;
  opacity: 0;
  pointer-events: none;
  white-space: nowrap;
}
.snackbar.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.snackbar .material-symbols-outlined { font-size: 16px; color: var(--md-sys-color-inverse-primary); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--md-sys-color-outline-variant); border-radius: 99px; }
::-webkit-scrollbar-track { background: transparent; }

/* ── ICON FONT ── */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  white-space: nowrap;
  display: inline-block;
  user-select: none;
}