/* ==========================================================================
   style.css — Hibari Dashboard
   Imports tokens.css, then applies layout + components using BEM conventions.
   Design direction: SKMT "async" minimalism × math-viz precision
   Dark default, light-mode via [data-theme="light"] on <html>
   ========================================================================== */

@import url('tokens.css');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500&display=swap');

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

html {
  height: 100%;
  /* theme transition — only when explicitly switching */
  color-scheme: dark;
}
[data-theme="light"] { color-scheme: light; }

body {
  background: var(--surface-base);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  /* subtle 4px grid as background texture */
  background-image:
    linear-gradient(var(--border-hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-hairline) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
}

/* Light 모드: 히바리 녹색 → 복숭아 파스텔 그라데이션 배경 (그리드 제거) */
[data-theme="light"] body {
  background:
    radial-gradient(circle at 18% 12%, #e6f2d4 0%, transparent 55%),
    radial-gradient(circle at 82% 88%, #fde2cf 0%, transparent 55%),
    linear-gradient(135deg, #f4f9ea 0%, #fdf3e7 100%);
  background-attachment: fixed;
  background-image:
    radial-gradient(circle at 18% 12%, #e6f2d4 0%, transparent 55%),
    radial-gradient(circle at 82% 88%, #fde2cf 0%, transparent 55%),
    linear-gradient(135deg, #f4f9ea 0%, #fdf3e7 100%);
}

h1, h2, h3, h4 { font-weight: 500; letter-spacing: -0.01em; line-height: 1.3; }
p { color: var(--text-secondary); }
pre, code, kbd { font-family: var(--font-mono); }
button { font-family: var(--font-ui); }

/* ==========================================================================
   2. PAGE SHELL — header / main / footer
   ========================================================================== */

/* ── Header ──────────────────────────────────────────────────────────────── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
  padding: 0 var(--space-6);
  background: var(--surface-base);
  border-bottom: 1px solid var(--border-hairline);
  position: sticky;
  top: 0;
  z-index: 50;
}

.app-header__brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.app-header__glyph {
  font-size: var(--text-xl);
  color: var(--accent-teal);
  line-height: 1;
  align-self: center;
  opacity: 0.85;
}

.app-header__title {
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.app-header__sub {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

.app-header__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Status badge */
.app-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}
.app-status.status-ok  { color: var(--color-ok);     border-color: var(--color-ok-border); }
.app-status.status-err { color: var(--color-danger);  border-color: var(--color-danger-border); }

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--text-md);
  line-height: 1;
  transition: border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--border-focus); color: var(--accent-teal); }
.theme-toggle__icon--light { display: none; }
[data-theme="light"] .theme-toggle__icon--dark  { display: none; }
[data-theme="light"] .theme-toggle__icon--light { display: inline; }

/* ── Main layout — 3-column ──────────────────────────────────────────────── */
.app-main {
  display: grid;
  grid-template-columns: var(--panel-width) 1fr var(--panel-width);
  grid-template-rows: auto auto 1fr auto;
  grid-template-areas:
    "ood    ood    ood"
    "left   matrix right"
    "left   matrix right"
    "log    log    log";
  gap: 1px;               /* hairline gaps = grid lines between panels */
  min-height: calc(100vh - var(--header-height) - 40px);
  background: var(--border-hairline);  /* gap colour = hairline */
}

/* Ensure all direct section children sit on the grid */
.app-main > * { background: var(--surface-base); }

/* ── Footer ──────────────────────────────────────────────────────────────── */
.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-6);
  border-top: 1px solid var(--border-hairline);
  background: var(--surface-base);
}
.app-footer span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   3. OOD BANNER
   ========================================================================== */
.ood-banner {
  grid-area: ood;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-6);
  background: var(--color-ok-dim);
  border-bottom: 1px solid var(--color-ok-border);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  transition: background var(--transition), border-color var(--transition);
}
.ood-banner.ood-hidden   { display: none; }
.ood-banner.level-warn   {
  background: var(--color-warn-dim);
  border-color: var(--color-warn-border);
}
.ood-banner.level-danger {
  background: var(--color-danger-dim);
  border-color: var(--color-danger-border);
}

.ood-banner__label {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}
.ood-banner__score {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-ok);
  min-width: 52px;
  letter-spacing: -0.02em;
}
.level-warn   .ood-banner__score { color: var(--color-warn); }
.level-danger .ood-banner__score { color: var(--color-danger); }
.ood-banner__level  { font-weight: 500; color: var(--text-primary); }
.ood-banner__detail { color: var(--text-secondary); font-size: var(--text-xs); margin-left: auto; }

/* ==========================================================================
   4. LEFT PANEL — editing controls
   ========================================================================== */
.panel--left {
  grid-area: left;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border-hairline);
}

/* ==========================================================================
   5. RIGHT PANEL — generation + playback controls
   ========================================================================== */
.panel--right {
  grid-area: right;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border-hairline);
}

/* ==========================================================================
   6. CONTROL GROUP — shared between both panels
   ========================================================================== */
.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--surface-base);
}

.control-group__heading {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: var(--space-1);
}

.hint {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.5;
  font-family: var(--font-mono);
}

/* ==========================================================================
   7. MATRIX CENTER AREA
   ========================================================================== */
.matrix-area {
  grid-area: matrix;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border-hairline);
}

/* ── Matrix card ─────────────────────────────────────────────────────────── */
.matrix-card {
  display: flex;
  flex-direction: column;
  flex: 1;
  background: var(--surface-base);
  min-height: 0;
}

.matrix-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--border-hairline);
}

.matrix-card__title {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 0.01em;
}
/* Accent stripe on the active (edit) card title */
.matrix-card--edit .matrix-card__title::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 12px;
  background: var(--accent-teal);
  border-radius: 1px;
  margin-right: var(--space-2);
  vertical-align: middle;
}
.matrix-card__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.matrix-card__canvas-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-canvas);
  padding: var(--space-3);
  min-height: 260px;
}

/* 두 OM 카드 위 사진 배너 — matrix-area 직접 자식. 카드 밖이라 canvas 높이 경쟁 없음.
   horizontal padding 은 canvas-wrap 의 padding(var(--space-3)) 과 정확히 일치시켜
   img 가 canvas 렌더 폭과 완벽히 겹치도록 함. */
.matrix-area__photo-banner {
  flex: 0 0 auto;
  background: var(--surface-canvas);
  padding: var(--space-2) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  align-items: stretch;
}
.matrix-area__photo-banner[hidden] { display: none; }
.matrix-area__photo-banner img {
  width: 100%;
  height: var(--photo-banner-h, 120px);
  object-fit: fill;
  display: block;
  border-radius: 2px;
  border: 1px solid var(--border-hairline);
}
.matrix-area__photo-banner-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
}

.matrix-card__canvas-wrap canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  /* Kept as pixelated — critical for matrix cell rendering */
  image-rendering: pixelated;
  cursor: crosshair;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}
.matrix-card__canvas-wrap canvas[hidden] { display: none; }

.matrix-card__footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-2) var(--space-4);
  border-top: 1px solid var(--border-hairline);
  flex-wrap: wrap;
}

/* Legend */
.legend {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}
.legend__dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  flex-shrink: 0;
}
.legend__dot--on      { background: var(--cell-on); }
.legend__dot--off     { background: var(--cell-off); border: 1px solid var(--border-default); }
.legend__dot--diff    { background: var(--cell-diff-add); }

/* Hover tooltip */
.hover-tooltip {
  position: absolute;
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

/* ==========================================================================
   8. FORM CONTROLS
   ========================================================================== */

/* ── Button ──────────────────────────────────────────────────────────────── */
.btn {
  display: block;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 400;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  text-align: left;
  letter-spacing: 0.01em;
  line-height: 1.4;
}
.btn:hover:not(:disabled) {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
  background: var(--accent-teal-dim);
}
.btn:active:not(:disabled) {
  background: var(--accent-teal-dim);
  border-color: var(--accent-teal);
}
.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.btn:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 2px;
}

/* Primary — teal */
.btn--primary {
  border-color: var(--accent-teal-border);
  color: var(--accent-teal);
}
.btn--primary:hover:not(:disabled) {
  background: var(--accent-teal-dim);
  border-color: var(--accent-teal);
}

/* Small variant */
.btn--small {
  width: auto;
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
}

/* ── Select ──────────────────────────────────────────────────────────────── */
.select {
  width: 100%;
  background: var(--surface-base);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-6) var(--space-2) var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  cursor: pointer;
  appearance: none;
  /* Chevron via SVG background */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238a8a96' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 10px) center;
  transition: border-color var(--transition);
}
.select:hover  { border-color: var(--border-focus); }
.select:focus  { outline: none; border-color: var(--border-focus); }

/* ── Slider row ──────────────────────────────────────────────────────────── */
.slider-row {
  display: grid;
  grid-template-columns: 72px 1fr 40px;
  align-items: center;
  gap: var(--space-2);
}
/* 4-col variant when a button follows the number input */
.slider-row--seed {
  grid-template-columns: 72px 1fr 36px;
}

.slider-row__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.slider-row__track {
  accent-color: var(--accent-teal);
  width: 100%;
  height: 4px;
  cursor: pointer;
}
.slider-row__value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-primary);
  text-align: right;
}

/* Seed row — number input + dice button inline */
.seed-row {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  align-items: center;
  gap: var(--space-2);
}
.seed-row__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
}
.seed-row__input {
  background: var(--surface-raised);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  width: 100%;
  transition: border-color var(--transition);
}
.seed-row__input:focus { outline: none; border-color: var(--border-focus); }

/* ── Toggle (checkbox) ───────────────────────────────────────────────────── */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  line-height: 1.4;
}
.toggle input[type="checkbox"] {
  accent-color: var(--accent-teal);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  cursor: pointer;
}

/* ── Radio row ───────────────────────────────────────────────────────────── */
.radio-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.radio-row label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  cursor: pointer;
}
.radio-row input[type="radio"] {
  accent-color: var(--accent-teal);
  cursor: pointer;
}

/* ==========================================================================
   9. PROGRESS + META
   ========================================================================== */
.progress-bar {
  width: 100%;
  height: 2px;
  background: var(--border-hairline);
  border-radius: 1px;
  overflow: hidden;
  margin-top: var(--space-1);
}
.progress-bar__fill {
  height: 100%;
  width: 0;
  background: var(--accent-teal);
  transition: width 150ms ease;
}

.meta-row {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  line-height: 1.4;
}

/* ==========================================================================
   10. LOG PANEL
   ========================================================================== */
.log-panel {
  grid-area: log;
  background: var(--surface-base);
  border-top: 1px solid var(--border-hairline);
  padding: var(--space-3) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.log-panel__heading {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.log-panel__pre {
  margin: 0;
  max-height: 120px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.7;
  white-space: pre-wrap;
  /* Subtle scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}
.log-panel__pre::-webkit-scrollbar { width: 4px; }
.log-panel__pre::-webkit-scrollbar-track { background: transparent; }
.log-panel__pre::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 2px; }

/* ==========================================================================
   11. RESPONSIVE BREAKPOINTS
   ========================================================================== */

/* Tablet — collapse to 2-column (left panel hidden into top bar) */
@media (max-width: 1100px) {
  .app-main {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "ood    ood"
      "matrix matrix"
      "left   right"
      "log    log";
  }

  .panel--left,
  .panel--right {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1px;
    background: var(--border-hairline);
  }

  .panel--left  .control-group,
  .panel--right .control-group {
    flex: 1 1 200px;
  }
}

/* Mobile — single column */
@media (max-width: 680px) {
  :root {
    --panel-width: 100%;
  }

  .app-header {
    padding: 0 var(--space-3);
    height: auto;
    min-height: var(--header-height);
    flex-wrap: wrap;
    gap: var(--space-2);
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
  }

  .app-header__sub { display: none; }

  .app-main {
    grid-template-columns: 1fr;
    grid-template-areas:
      "ood"
      "matrix"
      "left"
      "right"
      "log";
  }

  .matrix-card__canvas-wrap { min-height: 200px; padding: var(--space-2); }
  .btn { padding: var(--space-3) var(--space-3); min-height: 44px; font-size: var(--text-md); }
  .btn--small { min-height: 36px; font-size: var(--text-sm); }
  .select { min-height: 44px; font-size: var(--text-md); }

  .slider-row__track { height: 28px; }

  .log-panel__pre { max-height: 80px; }

  .ood-banner__detail { margin-left: 0; width: 100%; }
  .ood-banner { flex-wrap: wrap; }
}

/* ── 후보 탭 (30초×3 슬라이스 모드) ─────────────────────────────────── */
.candidate-tabs {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.candidate-tabs[hidden] { display: none; }
.candidate-tab {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--color-border, #3a3f52);
  background: transparent;
  opacity: 0.65;
}
.candidate-tab:not(:disabled):hover { opacity: 1; }
.candidate-tab.is-active {
  opacity: 1;
  border-color: var(--color-accent, #4ADE80);
  background: color-mix(in srgb, var(--color-accent, #4ADE80) 12%, transparent);
  color: var(--color-accent, #4ADE80);
  font-weight: 600;
}

/* ==========================================================================
   Cycle preview list — 우측 패널 "사이클 미리듣기" 섹션
   ========================================================================== */
.cycle-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  max-height: 220px;
  overflow-y: auto;
}

/* 건반 클릭 안내 배너 — 눈에 띄게 강조 */
.click-hint {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  margin: var(--space-2) 0;
  background: var(--accent-teal-dim);
  border: 1px solid var(--accent-teal-border);
  border-left: 3px solid var(--accent-teal);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  color: var(--text-primary);
  line-height: 1.45;
}
.click-hint__badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 3px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--surface-base);
  background: var(--accent-teal);
  border-radius: var(--radius-sm);
}
.click-hint__text {
  flex: 1;
}
.click-hint__text strong {
  color: var(--accent-teal);
  font-weight: 600;
}
.click-hint__list {
  flex: 1;
  margin: 0;
  padding-left: var(--space-3);
  list-style: disc;
}
.click-hint__list li {
  margin: 0;
  padding: 1px 0;
}
.click-hint__list strong {
  color: var(--accent-teal);
  font-weight: 600;
}
.cycle-item {
  display: grid;
  grid-template-columns: 28px 30px 1fr;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  cursor: pointer;                 /* row 전체가 선택 가능 */
  transition: border-color var(--transition), background var(--transition);
}
.cycle-item:hover {
  border-color: var(--accent-teal-border);
  background: var(--surface-overlay);
}
.cycle-item.is-selected {
  border-color: var(--accent-teal-border);
  background: var(--accent-teal-dim);
}
.cycle-item.is-playing {
  border-color: var(--accent-teal);
  background: var(--accent-teal-dim);
  box-shadow: inset 0 0 0 1px var(--accent-teal);
}
.cycle-item__play {
  height: 24px;
  width: 24px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--accent-teal-border);
  color: var(--accent-teal);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 10px;
  line-height: 1;
  transition: background var(--transition), border-color var(--transition);
}
.cycle-item__play:hover {
  background: var(--accent-teal-dim);
  border-color: var(--accent-teal);
}
.cycle-item__play:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 2px;
}
.cycle-item__id {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}
.cycle-item__notes {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   Cycle visualization — 우측 패널 하단, 피아노 건반 + 선택된 사이클 표시
   ========================================================================== */
.cycle-viz__label {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-secondary);
  min-height: 18px;
}
.cycle-viz__id {
  color: var(--accent-teal);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.cycle-viz__notes {
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}
.cycle-viz__count {
  color: var(--text-tertiary);
  font-size: 10px;
}
.cycle-viz__hint {
  color: var(--text-tertiary);
  font-style: italic;
}
.cycle-viz__canvas-wrap {
  width: 100%;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--surface-canvas);
  padding: 2px;
  box-sizing: border-box;
}
.cycle-viz__canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 64px;
}

/* ==========================================================================
   12. 변형 스택 (Q1) — 좌측 패널 카드 스택
   ========================================================================== */

.stack-heading-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.btn--icon {
  width: 24px;
  height: 24px;
  min-height: 24px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.btn--icon:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
  background: var(--accent-teal-dim);
}
.btn--icon:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 2px;
}

.stack-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-height: 380px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
  padding-right: var(--space-1);
}
.stack-list::-webkit-scrollbar { width: 4px; }
.stack-list::-webkit-scrollbar-track { background: transparent; }
.stack-list::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 2px; }

.stack-empty {
  font-style: italic;
  padding: var(--space-3) var(--space-2);
  text-align: center;
  border: 1px dashed var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
}

.stack-add-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2);
  align-items: center;
}

.stack-card {
  border: 1px solid var(--border-hairline);
  border-left: 3px solid var(--accent-teal);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  padding: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: border-color var(--transition), opacity var(--transition);
}
.stack-card.is-disabled {
  opacity: 0.45;
  border-left-color: var(--text-tertiary);
}
.stack-card.is-disabled .stack-card__name {
  text-decoration: line-through;
}

.stack-card__head {
  display: grid;
  grid-template-columns: 22px 1fr auto auto auto auto;
  align-items: center;
  gap: var(--space-1);
}

.stack-card__order {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--surface-base);
  background: var(--accent-teal);
  border-radius: var(--radius-sm);
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  letter-spacing: 0;
}

.stack-card__name {
  font-size: var(--text-sm);
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stack-card__btn {
  width: 22px;
  height: 22px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-hairline);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11px;
  line-height: 1;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.stack-card__btn:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
  background: var(--accent-teal-dim);
}
.stack-card__btn--del:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
  background: var(--color-danger-dim);
}
.stack-card__btn:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 1px;
}
.stack-card__btn--info {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-tertiary);
}
.stack-card__btn--info.is-active {
  color: var(--accent-primary);
  background: rgba(56, 189, 248, 0.12);
}

.stack-card__desc {
  font-size: 11px;
  line-height: 1.4;
  color: var(--text-tertiary);
  margin: 0;
  padding-left: 26px;
}

.stack-card__param {
  display: grid;
  grid-template-columns: 90px 1fr;
  align-items: center;
  gap: var(--space-2);
  padding-left: 26px;
}
.stack-card__param-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.stack-card__param-input {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.stack-card__param-val {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  text-align: right;
  min-width: 32px;
}
.stack-card__param-num {
  background: var(--surface-base);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 2px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  width: 56px;
  text-align: right;
  transition: border-color var(--transition);
}
.stack-card__param-num:focus {
  outline: none;
  border-color: var(--border-focus);
}
.stack-card__param-num:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.stack-card__num {
  background: var(--surface-base);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-1);
  font-family: var(--font-mono);
  font-size: 11px;
  width: 64px;
  transition: border-color var(--transition);
}
.stack-card__num:focus { outline: none; border-color: var(--border-focus); }
.stack-card__auto-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 2px var(--space-1);
  background: transparent;
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.stack-card__auto-btn:hover {
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}
.stack-card__auto-btn.is-active {
  background: var(--accent-teal-dim);
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}

/* ==========================================================================
   13. 참조 표시 모드 (binary / continuous) — 캔버스 토글
   ========================================================================== */
.matrix-card__viewmode {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-family: var(--font-mono);
}
.matrix-card__viewmode-btn {
  background: transparent;
  border: 0;
  border-right: 1px solid var(--border-hairline);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  letter-spacing: 0.02em;
  padding: 3px var(--space-2);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  font-family: var(--font-mono);
}
.matrix-card__viewmode-btn:last-child { border-right: 0; }
.matrix-card__viewmode-btn:hover { color: var(--accent-teal); }
.matrix-card__viewmode-btn.is-active {
  background: var(--accent-teal-dim);
  color: var(--accent-teal);
}
.matrix-card__viewmode-btn:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 2px;
}

/* legend — continuous 그라데이션 바 */
.legend__bar {
  display: inline-block;
  width: 28px;
  height: 8px;
  border-radius: 1px;
  flex-shrink: 0;
}
.legend__bar--cont {
  background: linear-gradient(to right,
    hsl(200, 70%, 50%) 0%,
    hsl(180, 70%, 45%) 50%,
    hsl(160, 70%, 38%) 100%);
}
[data-theme="light"] .legend__bar--cont {
  background: linear-gradient(to right,
    hsl(200, 70%, 90%) 0%,
    hsl(180, 70%, 60%) 50%,
    hsl(160, 70%, 35%) 100%);
}

/* ==========================================================================
   14. 도움말 모달 (Q2-b) — 변형 종류 표
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  animation: modalFade 160ms ease-out;
}
.modal-backdrop[hidden] { display: none; }
[data-theme="light"] .modal-backdrop { background: rgba(60, 50, 40, 0.45); }

@keyframes modalFade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  background: var(--surface-raised);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  max-width: 720px;
  width: 100%;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}
[data-theme="light"] .modal {
  background: #ffffff;
  box-shadow: 0 12px 40px rgba(110, 90, 70, 0.18);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-hairline);
}
.modal__title {
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.modal__body {
  padding: var(--space-4);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-default) transparent;
}

.help-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-xs);
  color: var(--text-primary);
}
.help-table th, .help-table td {
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--border-hairline);
  text-align: left;
  vertical-align: top;
  line-height: 1.5;
}
.help-table th {
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface-overlay);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 10px;
}
.help-table td:first-child {
  font-family: var(--font-mono);
  color: var(--accent-teal);
  white-space: nowrap;
  font-weight: 500;
}
.help-table td b {
  color: var(--accent-amber);
  font-weight: 500;
}

/* hint helper — used inside stack cards & modal */
.hint {
  font-size: 11px;
  color: var(--text-tertiary);
  line-height: 1.5;
  margin: var(--space-1) 0;
}

/* ───────────────────────────────────────────────────────────────────────────
 * 15. 모드 배지 + disabled view-mode 버튼 (3.6)
 * ─────────────────────────────────────────────────────────────────────── */

.stack-mode-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.02em;
  background: var(--surface-2, #1f2937);
  color: var(--text-primary, #e5e7eb);
  border: 1px solid var(--border-subtle, rgba(148,163,184,0.25));
  white-space: nowrap;
  margin-left: var(--space-2, 8px);
  cursor: help;
}
.stack-mode-badge[data-mode="binary"] {
  background: rgba(74, 222, 128, 0.12);
  color: var(--cell-on, #4ADE80);
  border-color: rgba(74, 222, 128, 0.35);
}
.stack-mode-badge[data-mode="continuous"] {
  background: rgba(56, 189, 248, 0.14);
  color: #38BDF8;
  border-color: rgba(56, 189, 248, 0.4);
}

.stack-heading-row {
  display: flex;
  align-items: center;
  gap: var(--space-2, 8px);
  flex-wrap: wrap;
}

.hint--algo {
  margin-top: 4px;
  font-style: italic;
  color: var(--text-secondary, #9ca3af);
}

.matrix-card__viewmode-btn:disabled,
.matrix-card__viewmode-btn.is-disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
  filter: grayscale(60%);
}

/* mobile adjustments for new components */
@media (max-width: 680px) {
  .stack-card__head {
    grid-template-columns: 22px 1fr auto auto auto auto;
  }
  .stack-card__btn { width: 28px; height: 28px; }
  .stack-card__param { grid-template-columns: 1fr; }
  .stack-card__desc, .stack-card__param { padding-left: 0; }
  .matrix-card__viewmode-btn { min-height: 32px; padding: var(--space-1) var(--space-2); }
  .modal { max-height: 90vh; }
  .help-table { font-size: 10px; }
  .help-table th, .help-table td { padding: var(--space-1) var(--space-2); }
}

/* ==========================================================================
   note → cycle 역방향 조회 (cycle-preview 패널 내부)
   ========================================================================== */
.note-lookup {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
}
.note-lookup__heading {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 var(--space-1) 0;
}
.note-lookup__row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}
.note-lookup__label {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}
.note-lookup__select {
  background: var(--surface-base);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  min-width: 140px;
}
.note-lookup__pitch {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
}
.note-lookup__result {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
  margin-top: var(--space-2);
  min-height: 24px;
}
.note-lookup__count {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  margin-right: var(--space-1);
}
.note-lookup__chip {
  background: var(--surface-elev);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: background 120ms, border-color 120ms;
}
.note-lookup__chip:hover {
  background: var(--accent-teal-dim);
  border-color: var(--accent-teal);
}
.note-lookup__empty {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-style: italic;
}

/* ── 사진 → 연속 OM (아이디어 B) ───────────────────────────────── */
.photo-group { }
.photo-panel {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.photo-panel__preview {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.photo-panel__preview img {
  width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-default);
  background: var(--surface-base);
  display: block;
}
.photo-panel__meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}
.photo-panel__name {
  font-size: var(--text-xs);
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.photo-panel__stats {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
  line-height: 1.4;
}
.photo-panel__gamma-hint {
  margin: 0;
  font-size: 11px;
  line-height: 1.4;
}
.photo-panel__btnrow {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
}
