/* Harmonia — практикум по гармонии
 * Светлая «бумажная» тема, серифная типографика и винный акцент.
 */

:root {
  color-scheme: light;
  --bg: #eee8dc;
  --bg-deep: #e4dbcb;
  --surface: #faf7f0;
  --surface-raised: #fffdf8;
  --surface-sunken: #f2ede3;
  --ink: #26221c;
  --ink-soft: #4a443a;
  --muted: #81786a;
  --muted-light: #a49a8a;
  --line: rgba(50, 42, 31, 0.13);
  --line-strong: rgba(50, 42, 31, 0.24);
  --accent: #843239;
  --accent-deep: #64242b;
  --accent-soft: #f2e3df;
  --accent-faint: #f8efec;
  --gold: #aa8350;
  --gold-soft: #f3eadb;
  --green: #4d6953;
  --green-soft: #e8efe7;
  --amber: #966426;
  --amber-soft: #f8edda;
  --shadow-lg: 0 24px 60px rgba(55, 40, 23, 0.08), 0 2px 6px rgba(55, 40, 23, 0.04);
  --shadow-md: 0 12px 30px rgba(55, 40, 23, 0.07);
  --shadow-sm: 0 3px 10px rgba(55, 40, 23, 0.06);
  --radius-xl: 26px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --font-serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  background:
    radial-gradient(circle at 12% -10%, rgba(255, 250, 238, 0.94), transparent 38%),
    radial-gradient(circle at 92% 2%, rgba(174, 132, 81, 0.1), transparent 26%),
    linear-gradient(135deg, var(--bg) 0%, #f1ece1 46%, var(--bg-deep) 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.32;
  background-image:
    repeating-linear-gradient(0deg, rgba(99, 76, 46, 0.025) 0, rgba(99, 76, 46, 0.025) 1px, transparent 1px, transparent 4px),
    radial-gradient(rgba(89, 64, 36, 0.055) 0.6px, transparent 0.8px);
  background-size: auto, 5px 5px;
}

::selection {
  color: var(--surface-raised);
  background: var(--accent);
}

button,
select {
  font: inherit;
}

button {
  color: inherit;
}

button:not(:disabled),
select {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header */
.site-header {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 23px 32px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid rgba(50, 42, 31, 0.1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: grid;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(111, 45, 51, 0.36);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.72), transparent 38%),
    linear-gradient(145deg, #fbf6ea, #e7d7c2);
  box-shadow: inset 0 0 0 4px rgba(255, 255, 255, 0.35), var(--shadow-sm);
}

.brand-lines {
  position: absolute;
  inset: 13px 8px;
  opacity: 0.33;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    var(--ink) 3px,
    var(--ink) 4px
  );
}

.brand-letter {
  position: relative;
  z-index: 1;
  margin-top: -3px;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 28px;
  font-style: italic;
  font-weight: 700;
  line-height: 1;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.7);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.brand-subtitle {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.16em;
  line-height: 1.2;
  text-transform: uppercase;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 18px;
}

.header-note {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
}

.header-separator {
  width: 1px;
  height: 20px;
  background: var(--line-strong);
}

.ghost-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  background: rgba(255, 253, 248, 0.42);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.ghost-button:hover {
  background: var(--surface-raised);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.help-glyph {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  border: 1px solid rgba(132, 50, 57, 0.35);
  border-radius: 50%;
}

/* Main layout */
.app-shell {
  display: grid;
  grid-template-columns: 336px minmax(0, 1fr);
  gap: 27px;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 27px 32px 38px;
  align-items: start;
}

.control-panel {
  position: sticky;
  top: 19px;
  max-height: calc(100vh - 38px);
  padding: 25px 23px 22px;
  overflow-y: auto;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.96), rgba(250, 247, 240, 0.94)),
    rgba(250, 247, 240, 0.88);
  border: 1px solid rgba(67, 53, 37, 0.15);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  scrollbar-width: thin;
  scrollbar-color: rgba(82, 63, 42, 0.24) transparent;
}

.control-panel::-webkit-scrollbar {
  width: 7px;
}

.control-panel::-webkit-scrollbar-thumb {
  background: rgba(82, 63, 42, 0.2);
  border: 2px solid transparent;
  border-radius: 999px;
  background-clip: padding-box;
}

.control-panel::before {
  content: "";
  position: absolute;
  top: 24px;
  left: 0;
  width: 3px;
  height: 58px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(to bottom, var(--accent), rgba(132, 50, 57, 0.1));
}

.panel-intro {
  padding-bottom: 21px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 7px;
  color: var(--accent);
  font-size: 9.5px;
  font-weight: 750;
  letter-spacing: 0.19em;
  line-height: 1.2;
  text-transform: uppercase;
}

.panel-intro h1 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

.panel-intro h1 em {
  color: var(--accent);
  font-weight: 500;
}

.panel-lede {
  margin: 13px 0 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

.control-section {
  padding: 20px 0 4px;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 15px;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-index {
  display: inline-grid;
  min-width: 22px;
  height: 19px;
  place-items: center;
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 10px;
  font-style: italic;
  font-weight: 700;
  background: var(--accent-faint);
  border: 1px solid rgba(132, 50, 57, 0.16);
  border-radius: 6px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 14px;
}

.field-label {
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.015em;
}

.select-wrap {
  position: relative;
  display: block;
}

.select-wrap::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 14px;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}

select {
  width: 100%;
  min-height: 41px;
  padding: 8px 36px 8px 12px;
  color: var(--ink);
  font-size: 12.5px;
  font-weight: 550;
  appearance: none;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.63);
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

select:hover {
  background: #fffefa;
  border-color: rgba(132, 50, 57, 0.35);
}

select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(132, 50, 57, 0.09);
  outline: none;
}

.field-note {
  margin: 5px 0 -3px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 11.5px;
  font-style: italic;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 4px;
  background: var(--surface-sunken);
  border: 1px solid rgba(65, 52, 36, 0.08);
  border-radius: 12px;
}

.segment {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px;
  color: var(--muted);
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 8px;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.segment:hover {
  color: var(--ink-soft);
}

.segment.is-active {
  color: var(--ink);
  background: var(--surface-raised);
  box-shadow: 0 2px 7px rgba(48, 35, 20, 0.08);
}

.voice-symbol {
  display: inline-grid;
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  place-items: center;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  font-weight: 700;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.segment.is-active .voice-symbol {
  color: var(--surface-raised);
  background: var(--accent);
  border-color: var(--accent);
}

.segment > span:last-child {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 12px;
  font-weight: 650;
  line-height: 1.25;
}

.segment small {
  color: var(--muted-light);
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.theme-summary {
  position: relative;
  margin-top: 12px;
  padding: 13px 13px 12px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent-faint), rgba(243, 233, 219, 0.65));
  border: 1px solid rgba(132, 50, 57, 0.12);
  border-radius: 11px;
}

.theme-summary::after {
  content: "𝄞";
  position: absolute;
  right: 5px;
  bottom: -17px;
  color: rgba(132, 50, 57, 0.07);
  font-family: var(--font-serif);
  font-size: 68px;
  line-height: 1;
  pointer-events: none;
}

.theme-summary-top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
}

.level-badge {
  display: inline-flex;
  align-items: center;
  min-height: 20px;
  padding: 2px 8px;
  color: var(--accent-deep);
  font-size: 8.5px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.53);
  border: 1px solid rgba(132, 50, 57, 0.16);
  border-radius: 999px;
}

.level-badge[data-level="middle"] {
  color: var(--amber);
  background: rgba(255, 250, 239, 0.64);
  border-color: rgba(150, 100, 38, 0.2);
}

.level-badge[data-level="advanced"] {
  color: var(--green);
  background: rgba(247, 253, 247, 0.63);
  border-color: rgba(77, 105, 83, 0.2);
}

.theme-count {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 10px;
  font-style: italic;
}

.theme-summary p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--ink-soft);
  font-size: 11.5px;
  line-height: 1.48;
}

.function-chips {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 10px;
}

.function-chip {
  display: inline-flex;
  align-items: center;
  min-height: 19px;
  padding: 2px 6px;
  color: var(--accent-deep);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: rgba(255, 253, 248, 0.76);
  border: 1px solid rgba(132, 50, 57, 0.11);
  border-radius: 5px;
}

.icon-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 5px;
}

.icon-choice,
.text-choice {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  height: 48px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.49);
  border: 1px solid var(--line);
  border-radius: 9px;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}

.icon-choice {
  flex-direction: column;
  gap: 1px;
  padding: 5px 4px 4px;
}

.icon-choice svg {
  width: 25px;
  height: 25px;
}

.icon-choice span {
  color: var(--muted-light);
  font-family: var(--font-serif);
  font-size: 8px;
  line-height: 1;
}

.icon-choice:hover,
.text-choice:hover {
  color: var(--ink);
  background: var(--surface-raised);
  border-color: var(--line-strong);
  transform: translateY(-1px);
}

.icon-choice.is-active,
.text-choice.is-active {
  color: var(--accent);
  background: var(--accent-faint);
  border-color: rgba(132, 50, 57, 0.42);
  box-shadow: inset 0 0 0 1px rgba(132, 50, 57, 0.08);
}

.icon-choice.is-active span {
  color: var(--accent);
}

.accidental-group .text-choice {
  height: 41px;
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1;
}

.accidental-group .text-choice:first-child {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 700;
}

.entry-hint {
  margin: 14px 0 4px;
  padding: 10px 11px;
  color: var(--muted);
  font-size: 10.5px;
  line-height: 1.5;
  background: rgba(242, 237, 227, 0.63);
  border-left: 2px solid rgba(132, 50, 57, 0.29);
  border-radius: 0 7px 7px 0;
}

.hint-mark {
  color: var(--accent);
  font-weight: 700;
}

.panel-actions {
  padding-top: 19px;
}

.solve-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 53px;
  padding: 0 17px 0 19px;
  overflow: hidden;
  color: #fffaf0;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.13), transparent 35%),
    linear-gradient(135deg, var(--accent), var(--accent-deep));
  border: 1px solid rgba(83, 26, 32, 0.65);
  border-radius: 12px;
  box-shadow: 0 11px 22px rgba(105, 39, 46, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.14);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.solve-button::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.09) 0, rgba(255, 255, 255, 0.09) 1px, transparent 1px, transparent 4px);
  pointer-events: none;
}

.solve-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(105, 39, 46, 0.23), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

.solve-button:active {
  transform: translateY(0);
}

.solve-label {
  position: relative;
  z-index: 1;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.solve-arrow {
  position: relative;
  z-index: 1;
  display: inline-grid;
  width: 28px;
  height: 28px;
  place-items: center;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 50%;
}

.solve-arrow svg {
  width: 17px;
  height: 17px;
}

.solve-spinner {
  position: absolute;
  right: 22px;
  z-index: 2;
  display: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid rgba(255, 255, 255, 0.36);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.solve-button.is-loading {
  pointer-events: none;
}

.solve-button.is-loading .solve-arrow {
  opacity: 0;
}

.solve-button.is-loading .solve-spinner {
  display: block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.secondary-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin-top: 8px;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 36px;
  padding: 6px 4px;
  color: var(--muted);
  font-size: 9.5px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.secondary-button svg {
  width: 14px;
  height: 14px;
  flex: 0 0 14px;
}

.secondary-button:hover:not(:disabled) {
  color: var(--ink-soft);
  background: var(--surface-raised);
  border-color: var(--line-strong);
}

.action-note {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 12px 0 0;
  color: var(--muted-light);
  font-size: 9px;
  line-height: 1.4;
}

.status-dot {
  width: 5px;
  height: 5px;
  flex: 0 0 5px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(77, 105, 83, 0.12);
}

/* Workspace and cards */
.workspace {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

.card {
  min-width: 0;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.98), rgba(251, 248, 241, 0.97));
  border: 1px solid rgba(67, 53, 37, 0.15);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.card-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 21px 24px 12px;
}

.card-heading h2,
.analysis-toolbar h3,
.verification-heading h3,
.solution-empty h3,
.solution-error h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.035em;
}

.card-heading h2 {
  font-size: 24px;
  line-height: 1.1;
}

.card-heading .eyebrow {
  margin-bottom: 5px;
}

.card-heading-side {
  display: flex;
  align-items: center;
  gap: 8px;
}

.clef-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 29px;
  padding: 4px 10px 4px 7px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 650;
  background: var(--surface-sunken);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.clef-icon {
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 0.8;
}

.bar-meter {
  display: inline-flex;
  align-items: center;
  min-height: 29px;
  padding: 4px 10px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: 700;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.score-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 3px 18px 1px;
  scrollbar-width: thin;
  scrollbar-color: rgba(82, 63, 42, 0.26) transparent;
}

.score-scroll::-webkit-scrollbar {
  height: 8px;
}

.score-scroll::-webkit-scrollbar-thumb {
  background: rgba(82, 63, 42, 0.2);
  border: 2px solid transparent;
  border-radius: 999px;
  background-clip: padding-box;
}

.score-stage {
  position: relative;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border-radius: 12px;
  background:
    linear-gradient(90deg, transparent 0, rgba(255, 255, 255, 0.65) 10%, rgba(255, 255, 255, 0.65) 90%, transparent 100%),
    linear-gradient(180deg, rgba(255, 253, 248, 0.4), rgba(250, 246, 238, 0.32));
}

.score-stage::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 34px;
  width: 3px;
  height: 28px;
  opacity: 0.23;
  background: var(--accent);
  border-radius: 2px;
}

.score-canvas {
  position: relative;
}

.fatal-error {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  min-height: 164px;
  padding: 28px;
  color: var(--accent-deep);
  background: var(--accent-faint);
  border: 1px solid rgba(132, 50, 57, 0.2);
  border-radius: var(--radius-md);
}

.fatal-error strong {
  font-family: var(--font-serif);
  font-size: 20px;
}

.fatal-error span {
  max-width: 600px;
  color: var(--muted);
  font-size: 12px;
}

.score-svg {
  display: block;
  width: 100%;
  height: auto;
  min-width: 0;
  touch-action: manipulation;
}

.score-stage.is-interactive {
  cursor: crosshair;
}

.score-svg text {
  font-family: var(--font-sans);
}

.measure-number {
  fill: var(--muted-light);
  font-family: var(--font-mono) !important;
  font-size: 8.5px;
  letter-spacing: 0.02em;
}

.system-caption {
  fill: var(--muted-light);
  font-family: var(--font-sans) !important;
  font-size: 8px;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.voice-caption {
  fill: var(--muted-light);
  font-family: var(--font-serif) !important;
  font-size: 11px;
  font-style: italic;
  font-weight: 700;
}

.label-tick {
  stroke: rgba(132, 50, 57, 0.24);
  stroke-width: 1;
  stroke-dasharray: 1.5 2.5;
}

.chord-label {
  fill: var(--accent-deep);
  font-family: var(--font-serif) !important;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.chord-label--predominant,
.chord-label--subdominant,
.chord-label--submediant {
  fill: #675333;
}

.chord-label--double-dominant,
.chord-label--secondary,
.chord-label--neapolitan {
  fill: var(--green);
}

.chord-label--mediant {
  fill: #6a5737;
}

.score-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 4px;
  padding: 11px 24px 13px;
  color: var(--muted);
  font-size: 10px;
  border-top: 1px solid var(--line);
  background: rgba(249, 245, 237, 0.55);
}

.score-stats {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

#staffHint {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stat-divider {
  width: 3px;
  height: 3px;
  flex: 0 0 3px;
  background: var(--muted-light);
  border-radius: 50%;
}

.score-help {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  color: var(--muted-light);
}

.score-help kbd {
  display: inline-flex;
  min-width: 26px;
  min-height: 18px;
  align-items: center;
  justify-content: center;
  padding: 1px 5px;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 8px;
  font-weight: 700;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 4px;
}

/* Keyboard */
.compact-heading {
  padding-bottom: 10px;
}

.keyboard-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.keyboard-range {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 650;
}

.keyboard-note {
  color: var(--muted-light);
  font-family: var(--font-serif);
  font-size: 10px;
  font-style: italic;
}

.keyboard-scroll {
  overflow-x: auto;
  padding: 6px 22px 3px;
  scrollbar-width: thin;
  scrollbar-color: rgba(82, 63, 42, 0.26) transparent;
}

.keyboard-scroll::-webkit-scrollbar {
  height: 7px;
}

.keyboard-scroll::-webkit-scrollbar-thumb {
  background: rgba(82, 63, 42, 0.2);
  border-radius: 999px;
}

.piano-shell {
  min-width: 700px;
  padding: 11px 12px 12px;
  background:
    linear-gradient(180deg, #332c25, #201c18 70%, #161310);
  border: 1px solid #100e0b;
  border-radius: 15px 15px 17px 17px;
  box-shadow:
    0 16px 30px rgba(33, 22, 12, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.13),
    inset 0 -2px 6px rgba(0, 0, 0, 0.45);
}

.piano {
  position: relative;
  display: flex;
  height: 145px;
  overflow: hidden;
  background: #f4ecdd;
  border-radius: 6px 6px 10px 10px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.18);
}

.piano-key {
  -webkit-tap-highlight-color: transparent;
}

.piano-key--white {
  position: relative;
  flex: 1 1 0;
  height: 100%;
  padding: 0;
  background:
    linear-gradient(90deg, transparent 0, rgba(255, 255, 255, 0.8) 10%, transparent 28%, rgba(151, 129, 95, 0.08) 100%),
    linear-gradient(180deg, #fbf8f1 0%, #f7f1e6 72%, #e8decb 100%);
  border: 0;
  border-right: 1px solid rgba(85, 66, 44, 0.34);
  border-bottom: 5px solid #d7cbb7;
  border-radius: 0 0 5px 5px;
  box-shadow: inset 0 -9px 14px rgba(128, 103, 66, 0.12);
  transition: background 0.08s ease, transform 0.08s ease, border-color 0.08s ease;
}

.piano-key--white:last-of-type {
  border-right: 0;
}

.piano-key--white:hover {
  background:
    linear-gradient(90deg, transparent 0, rgba(255, 255, 255, 0.86) 10%, transparent 28%, rgba(151, 129, 95, 0.08) 100%),
    linear-gradient(180deg, #fffdf8 0%, #fbf5ea 72%, #e9dfcb 100%);
}

.piano-key--white:active,
.piano-key--white.is-pressed {
  background: linear-gradient(180deg, #f7eddb, #eadbc6);
  border-bottom-color: #baa98f;
  transform: translateY(1px);
}

.piano-key--white .key-label {
  position: absolute;
  right: 0;
  bottom: 10px;
  left: 0;
  color: #8e8372;
  font-family: var(--font-serif);
  font-size: 10px;
  line-height: 1;
  text-align: center;
}

.piano-key--white .key-octave {
  display: block;
  margin-top: 3px;
  color: rgba(116, 101, 80, 0.62);
  font-family: var(--font-mono);
  font-size: 7px;
}

.piano-key--black {
  position: absolute;
  top: 0;
  z-index: 2;
  width: 4.25%;
  height: 88px;
  padding: 0;
  color: #e7d8c0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.12), transparent 30%, rgba(0, 0, 0, 0.16)),
    linear-gradient(180deg, #44382d, #211b16 72%, #0e0c0a);
  border: 1px solid #0d0b09;
  border-radius: 0 0 5px 5px;
  box-shadow:
    0 4px 4px rgba(0, 0, 0, 0.24),
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -5px 3px rgba(0, 0, 0, 0.38);
  transform: translateX(-50%);
  transition: background 0.08s ease, transform 0.08s ease;
}

.piano-key--black:hover {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.16), transparent 30%, rgba(0, 0, 0, 0.12)),
    linear-gradient(180deg, #594738, #2c231c 72%, #120f0c);
}

.piano-key--black:active,
.piano-key--black.is-pressed {
  transform: translateX(-50%) translateY(1px);
  box-shadow: 0 2px 2px rgba(0, 0, 0, 0.2), inset 0 -2px 2px rgba(0, 0, 0, 0.4);
}

.piano-key--black .key-label {
  position: absolute;
  right: 0;
  bottom: 7px;
  left: 0;
  overflow: hidden;
  color: #d1b88e;
  font-family: var(--font-serif);
  font-size: 7.5px;
  line-height: 1;
  text-align: center;
  text-overflow: clip;
}

.keyboard-caption {
  margin: 0;
  padding: 4px 24px 15px;
  color: var(--muted-light);
  font-family: var(--font-serif);
  font-size: 10.5px;
  font-style: italic;
}

/* Solution */
.solution-heading {
  padding-bottom: 15px;
}

.solution-heading-side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}

.solution-key-badge,
.solution-theme-badge {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  padding: 3px 9px;
  font-family: var(--font-serif);
  font-size: 10.5px;
  font-style: italic;
  border-radius: 999px;
}

.solution-key-badge {
  color: var(--accent-deep);
  background: var(--accent-faint);
  border: 1px solid rgba(132, 50, 57, 0.13);
}

.solution-theme-badge {
  color: var(--muted);
  background: var(--surface-sunken);
  border: 1px solid var(--line);
}

.solution-empty {
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0 24px 24px;
  padding: 26px 28px;
  min-height: 159px;
  background:
    radial-gradient(circle at 13% 20%, rgba(255, 255, 255, 0.78), transparent 28%),
    linear-gradient(120deg, rgba(244, 237, 225, 0.8), rgba(249, 246, 239, 0.62));
  border: 1px dashed rgba(72, 55, 36, 0.2);
  border-radius: var(--radius-lg);
}

.empty-staff-mark {
  position: relative;
  display: flex;
  flex: 0 0 160px;
  width: 160px;
  height: 106px;
  flex-direction: column;
  justify-content: center;
  gap: 9px;
  padding: 16px 14px;
  overflow: hidden;
  background: rgba(255, 253, 248, 0.68);
  border: 1px solid var(--line);
  border-radius: 10px;
  transform: rotate(-2.4deg);
  box-shadow: var(--shadow-sm);
}

.empty-staff-mark span {
  display: block;
  height: 1px;
  background: rgba(72, 55, 36, 0.28);
}

.empty-staff-mark i {
  position: absolute;
  top: 38px;
  left: 78px;
  width: 12px;
  height: 9px;
  background: var(--accent);
  border-radius: 50%;
  transform: rotate(-18deg);
  box-shadow: 5px 0 0 -2px var(--accent);
}

.empty-staff-mark i::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 4px;
  width: 1.4px;
  height: 35px;
  background: var(--accent);
  transform-origin: bottom;
}

.empty-copy {
  max-width: 590px;
}

.empty-copy h3 {
  margin-bottom: 6px;
  font-size: 19px;
}

.empty-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.empty-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.empty-tags span {
  padding: 3px 8px;
  color: var(--muted);
  font-size: 8.5px;
  font-weight: 650;
  letter-spacing: 0.03em;
  background: rgba(255, 255, 255, 0.47);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.solution-error {
  display: flex;
  gap: 13px;
  margin: 0 24px 24px;
  padding: 18px;
  color: var(--accent-deep);
  background: var(--accent-faint);
  border: 1px solid rgba(132, 50, 57, 0.2);
  border-radius: var(--radius-lg);
}

.error-mark {
  display: inline-grid;
  flex: 0 0 25px;
  width: 25px;
  height: 25px;
  place-items: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  background: var(--accent);
  border-radius: 50%;
}

.solution-error h3 {
  margin-bottom: 3px;
  font-size: 16px;
}

.solution-error p {
  margin: 0;
  color: #785055;
  font-size: 12px;
  line-height: 1.5;
}

/* Note-entry toolbar inside the score card */
.score-entry-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
  padding: 2px 24px 13px;
  border-bottom: 1px solid var(--line);
  background: rgba(249, 245, 237, 0.28);
}

.tool-field {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 5px;
}

.tool-label {
  color: var(--muted);
  font-size: 8.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-transform: uppercase;
}

.tool-label small {
  margin-left: 3px;
  color: var(--muted-light);
  font-size: 8px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
}

.duration-picker {
  display: flex;
  align-items: stretch;
  gap: 4px;
}

.icon-group--compact {
  display: flex;
  gap: 3px;
}

.icon-choice.dot-choice {
  width: 41px;
  height: 38px;
  flex: 0 0 41px;
  padding: 1px 3px 3px;
}

.icon-choice.dot-choice .dot-mark {
  margin-top: -7px;
  color: currentColor;
  font-family: var(--font-serif);
  font-size: 27px;
  font-weight: 700;
  line-height: 0.8;
}

.icon-choice.dot-choice span:last-child {
  margin-top: -1px;
  font-size: 6.5px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.icon-choice.dot-choice.is-active .dot-mark {
  color: var(--accent);
}

.icon-choice.dot-choice:disabled {
  opacity: 0.32;
  cursor: not-allowed;
  transform: none;
}

.icon-group--compact .icon-choice {
  width: 38px;
  height: 38px;
  padding: 3px 2px;
  border-radius: 8px;
}

.icon-group--compact .icon-choice svg {
  width: 21px;
  height: 21px;
}

.icon-group--compact .icon-choice span {
  font-size: 7px;
}

.icon-group--compact.accidental-group {
  gap: 3px;
}

.icon-group--compact.accidental-group .text-choice {
  width: 38px;
  height: 38px;
  border-radius: 8px;
}

.entry-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  margin-left: auto;
}

.secondary-button.compact-action {
  flex: 0 0 auto;
  min-height: 38px;
  padding: 6px 8px;
  font-size: 9.5px;
}

.secondary-button.compact-action svg {
  width: 13px;
  height: 13px;
  flex-basis: 13px;
}

.solve-button.score-solve {
  flex: 0 0 auto;
  width: auto;
  min-width: 106px;
  height: 38px;
  padding: 0 8px 0 13px;
  border-radius: 9px;
}

.solve-button.score-solve .solve-label {
  margin-right: 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.solve-button.score-solve .solve-arrow {
  width: 23px;
  height: 23px;
}

.solve-button.score-solve .solve-arrow svg {
  width: 14px;
  height: 14px;
}

.solve-button.score-solve .solve-spinner {
  right: 15px;
  width: 14px;
  height: 14px;
}

.panel-footnote {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 17px 0 0;
  padding-top: 15px;
  color: var(--muted-light);
  font-size: 9px;
  line-height: 1.4;
  border-top: 1px solid var(--line);
}

.solution-content {
  padding-bottom: 24px;
}

.result-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 24px 8px;
  padding: 15px 17px;
  background:
    radial-gradient(circle at 12% 0%, rgba(255, 255, 255, 0.72), transparent 40%),
    linear-gradient(105deg, rgba(243, 234, 219, 0.75), rgba(250, 245, 236, 0.66));
  border: 1px solid rgba(102, 74, 42, 0.13);
  border-radius: var(--radius-md);
}

.cadence-block {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.result-kicker {
  color: var(--muted-light);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.cadence-block strong {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.cadence-block > span:last-child {
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 11px;
  font-style: italic;
}

.verification-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 28px;
  padding: 4px 10px;
  color: var(--green);
  font-size: 9.5px;
  font-weight: 700;
  white-space: nowrap;
  background: var(--green-soft);
  border: 1px solid rgba(77, 105, 83, 0.19);
  border-radius: 999px;
}

.verification-status::before {
  content: "✓";
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
}

.verification-status.has-warnings {
  color: var(--amber);
  background: var(--amber-soft);
  border-color: rgba(150, 100, 38, 0.2);
}

.verification-status.has-warnings::before {
  content: "!";
}

.solution-score {
  padding: 3px 18px 0;
}

.solution-score .score-stage {
  min-width: 0;
  background:
    linear-gradient(180deg, rgba(255, 253, 248, 0.35), rgba(249, 244, 235, 0.26));
}

.solution-score .score-stage::before {
  display: none;
}

.chain-row {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 3px 24px 0;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.chain-label {
  flex: 0 0 auto;
  color: var(--muted-light);
  font-size: 8.5px;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.chain-values {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
}

.chain-token {
  padding: 2px 7px;
  color: var(--accent-deep);
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  background: var(--accent-faint);
  border-radius: 4px;
}

.chain-arrow {
  color: var(--muted-light);
  font-size: 9px;
}

.analysis-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 19px 24px 12px;
}

.analysis-toolbar h3,
.verification-heading h3 {
  font-size: 19px;
}

.analysis-toolbar .eyebrow,
.verification-heading .eyebrow {
  margin-bottom: 4px;
}

.small-button {
  flex: 0 0 auto;
  padding: 7px 11px;
  font-size: 10px;
}

.small-button svg {
  width: 13px;
  height: 13px;
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 9px;
  padding: 0 24px 21px;
}

.analysis-card {
  position: relative;
  min-height: 152px;
  padding: 13px 14px 14px;
  overflow: hidden;
  background: rgba(255, 253, 248, 0.74);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.analysis-card:hover {
  border-color: rgba(132, 50, 57, 0.24);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.analysis-card::after {
  content: attr(data-index);
  position: absolute;
  top: 8px;
  right: 10px;
  color: rgba(77, 63, 44, 0.16);
  font-family: var(--font-serif);
  font-size: 24px;
  font-style: italic;
  line-height: 1;
}

.analysis-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding-right: 22px;
}

.chord-symbol {
  color: var(--accent-deep);
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.chord-roman {
  display: inline-flex;
  margin-top: 5px;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 11px;
  font-style: italic;
}

.step-position {
  color: var(--muted-light);
  font-family: var(--font-mono);
  font-size: 8.5px;
  white-space: nowrap;
}

.chord-detail {
  margin: 9px 0 0;
  color: var(--ink-soft);
  font-family: var(--font-serif);
  font-size: 11.5px;
  line-height: 1.42;
}

.analysis-comment {
  margin: 9px 0 0;
  padding-top: 8px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
  border-top: 1px solid rgba(50, 42, 31, 0.08);
}

.nct-tag {
  display: inline-flex;
  margin-top: 7px;
  padding: 2px 6px;
  color: var(--green);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--green-soft);
  border-radius: 4px;
  text-transform: uppercase;
}

.verification-block {
  margin: 0 24px;
  padding: 17px 17px 15px;
  background: rgba(242, 237, 227, 0.48);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.verification-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 11px;
}

.verification-note {
  color: var(--muted-light);
  font-family: var(--font-serif);
  font-size: 10px;
  font-style: italic;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 6px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 30px;
  padding: 5px 8px;
  color: var(--green);
  font-size: 10.5px;
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid rgba(77, 105, 83, 0.13);
  border-radius: 6px;
}

.check-item::before {
  content: "✓";
  display: inline-grid;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  place-items: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 10px;
  font-weight: 700;
  background: var(--green);
  border-radius: 50%;
}

.check-item.is-failed {
  color: var(--amber);
  border-color: rgba(150, 100, 38, 0.18);
  background: rgba(255, 249, 238, 0.72);
}

.check-item.is-failed::before {
  content: "!";
  background: var(--amber);
}

.warning-panel {
  margin: 10px 24px 0;
  padding: 14px 16px;
  color: var(--amber);
  background: var(--amber-soft);
  border: 1px solid rgba(150, 100, 38, 0.19);
  border-radius: var(--radius-md);
}

.warning-heading {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.warning-mark {
  display: inline-grid;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  place-items: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 700;
  background: var(--amber);
  border-radius: 50%;
}

.warning-heading h4 {
  margin: 1px 0 2px;
  font-size: 11px;
  font-weight: 700;
}

.warning-heading p {
  margin: 0;
  color: #846a4c;
  font-size: 9.5px;
  line-height: 1.4;
}

.warning-panel ul {
  margin: 9px 0 0 31px;
  padding: 0;
  color: #7a5e3d;
  font-size: 9.5px;
  line-height: 1.55;
}

.warning-panel li + li {
  margin-top: 2px;
}

/* Footer */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 16px 32px 25px;
  color: var(--muted-light);
  font-size: 9.5px;
  border-top: 1px solid rgba(50, 42, 31, 0.09);
}

.site-footer > div:first-child {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.footer-brand {
  color: var(--accent);
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  font-weight: 700;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-dot {
  color: var(--muted-light);
}

/* Dialog */
.help-dialog {
  width: min(680px, calc(100vw - 32px));
  max-height: calc(100vh - 46px);
  padding: 0;
  overflow: auto;
  color: var(--ink);
  background: var(--surface-raised);
  border: 1px solid var(--line-strong);
  border-radius: 22px;
  box-shadow: 0 35px 80px rgba(40, 29, 17, 0.25);
}

.help-dialog::backdrop {
  background: rgba(42, 32, 22, 0.42);
  backdrop-filter: blur(3px);
}

.dialog-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 26px 16px;
  border-bottom: 1px solid var(--line);
}

.dialog-heading h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 27px;
  font-weight: 500;
  letter-spacing: -0.04em;
}

.dialog-close {
  display: inline-grid;
  flex: 0 0 31px;
  width: 31px;
  height: 31px;
  place-items: center;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: 23px;
  line-height: 1;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.dialog-close:hover {
  color: var(--ink);
  background: var(--surface-sunken);
}

.help-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 27px;
  padding: 22px 26px;
}

.help-content section {
  min-width: 0;
}

.help-content h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.help-content p,
.help-content li {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.62;
}

.help-content p {
  margin: 0;
}

.help-content p + p {
  margin-top: 8px;
}

.help-content ul {
  margin: 0;
  padding-left: 15px;
}

.help-content li + li {
  margin-top: 5px;
}

.help-tip {
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.help-tip strong {
  color: var(--ink-soft);
  font-weight: 650;
}

.dialog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 26px 18px;
  color: var(--muted-light);
  font-size: 9.5px;
  border-top: 1px solid var(--line);
  background: rgba(242, 237, 227, 0.35);
}

.primary-small {
  min-height: 35px;
  padding: 7px 16px;
  color: #fffaf0;
  font-size: 10.5px;
  font-weight: 650;
  background: var(--accent);
  border: 1px solid var(--accent-deep);
  border-radius: 8px;
}

.primary-small:hover {
  background: var(--accent-deep);
}

/* Toast */
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  max-width: min(390px, calc(100vw - 32px));
  padding: 11px 15px;
  color: #fdf8ed;
  font-size: 11px;
  font-weight: 550;
  line-height: 1.45;
  background: rgba(39, 35, 30, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 9px;
  box-shadow: 0 12px 25px rgba(30, 22, 14, 0.2);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.is-error {
  background: rgba(102, 35, 42, 0.98);
}

.toast.is-warning {
  background: rgba(107, 72, 27, 0.98);
}

.toast.is-success {
  background: rgba(49, 78, 55, 0.98);
}

/* Utility */
[hidden] {
  display: none !important;
}

.noscript {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 13px 18px;
  color: #fff;
  background: var(--accent);
  border-radius: 8px;
}

/* Responsive */
@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 308px minmax(0, 1fr);
    gap: 20px;
    padding-right: 24px;
    padding-left: 24px;
  }

  .score-entry-bar {
    gap: 11px;
    padding-right: 20px;
    padding-left: 20px;
  }

  .secondary-button.compact-action span {
    display: none;
  }

  .secondary-button.compact-action {
    width: 36px;
    padding: 0;
  }

  .secondary-button.compact-action svg {
    width: 15px;
    height: 15px;
    flex-basis: 15px;
  }

  .site-header,
  .site-footer {
    padding-right: 24px;
    padding-left: 24px;
  }

  .control-panel {
    padding-right: 19px;
    padding-left: 19px;
  }

  .panel-intro h1 {
    font-size: 32px;
  }

  .card-heading {
    padding-right: 20px;
    padding-left: 20px;
  }

  .score-scroll {
    padding-right: 14px;
    padding-left: 14px;
  }

  .solution-empty {
    margin-right: 20px;
    margin-left: 20px;
  }

  .result-banner,
  .chain-row,
  .verification-block,
  .warning-panel {
    margin-right: 20px;
    margin-left: 20px;
  }

  .analysis-grid,
  .analysis-toolbar {
    padding-right: 20px;
    padding-left: 20px;
  }
}

@media (max-width: 960px) {
  .app-shell {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-top: 20px;
  }

  .control-panel {
    position: static;
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 1fr);
    gap: 0 28px;
    max-height: none;
    padding: 23px;
    overflow: visible;
  }

  .control-panel::before {
    top: 24px;
    bottom: 24px;
    height: auto;
  }

  .panel-intro {
    grid-column: 1 / -1;
    padding-bottom: 17px;
  }

  .panel-intro h1 {
    max-width: 550px;
    font-size: 34px;
  }

  .control-section {
    padding-top: 17px;
  }

  .theme-section {
    grid-column: auto;
  }

  .panel-footnote {
    grid-column: 1 / -1;
    margin-top: 15px;
  }

  .solution-empty {
    min-height: 140px;
  }

  .empty-staff-mark {
    flex-basis: 130px;
    width: 130px;
    height: 94px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }
}

@media (max-width: 700px) {
  .site-header {
    padding: 18px 16px 15px;
  }

  .brand-mark {
    flex-basis: 41px;
    width: 41px;
    height: 41px;
  }

  .brand-letter {
    font-size: 24px;
  }

  .brand-title {
    font-size: 21px;
  }

  .brand-subtitle {
    font-size: 8px;
  }

  .header-note,
  .header-separator {
    display: none;
  }

  .ghost-button {
    padding: 8px 10px;
    font-size: 10px;
  }

  .app-shell {
    padding: 14px 12px 26px;
  }

  .control-panel {
    display: block;
    padding: 21px 17px;
    border-radius: 20px;
  }

  .panel-footnote {
    margin-top: 17px;
  }

  .panel-intro h1 {
    font-size: 32px;
  }

  .panel-actions {
    display: block;
  }

  .secondary-actions {
    margin-top: 7px;
  }

  .card {
    border-radius: 20px;
  }

  .card-heading {
    align-items: flex-start;
    padding: 18px 17px 10px;
  }

  .card-heading h2 {
    font-size: 22px;
  }

  .card-heading-side {
    gap: 5px;
  }

  .clef-badge {
    padding-right: 8px;
    padding-left: 6px;
  }

  .bar-meter {
    display: none;
  }

  .score-scroll {
    padding-right: 8px;
    padding-left: 8px;
  }

  .score-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    padding: 10px 17px 13px;
  }

  .score-help {
    display: none;
  }

  .compact-heading {
    flex-direction: column;
    gap: 7px;
  }

  .keyboard-side {
    align-items: flex-start;
  }

  .keyboard-scroll {
    padding-right: 12px;
    padding-left: 12px;
  }

  .piano-shell {
    min-width: 620px;
  }

  .score-entry-bar {
    align-items: flex-start;
    gap: 8px;
    padding: 0 17px 12px;
  }

  .tool-label small {
    display: none;
  }

  .entry-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    margin-top: 2px;
    margin-left: 0;
  }

  .secondary-button.compact-action {
    width: auto;
    min-height: 34px;
  }

  .secondary-button.compact-action span {
    display: inline;
  }

  .solve-button.score-solve {
    grid-column: 1 / -1;
    width: 100%;
    height: 39px;
    margin-top: 1px;
  }

  .keyboard-caption {
    padding-right: 17px;
    padding-left: 17px;
  }

  .solution-heading {
    gap: 8px;
  }

  .solution-empty {
    flex-direction: column;
    align-items: flex-start;
    gap: 17px;
    margin: 0 17px 18px;
    padding: 20px;
  }

  .empty-staff-mark {
    flex-basis: 112px;
    width: 112px;
    height: 80px;
  }

  .empty-staff-mark i {
    top: 28px;
    left: 55px;
  }

  .empty-copy h3 {
    font-size: 18px;
  }

  .solution-content {
    padding-bottom: 18px;
  }

  .result-banner {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    margin: 0 17px 7px;
  }

  .solution-score {
    padding-right: 8px;
    padding-left: 8px;
  }

  .chain-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    margin-right: 17px;
    margin-left: 17px;
  }

  .analysis-toolbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding: 17px 17px 10px;
  }

  .analysis-grid {
    grid-template-columns: 1fr;
    padding: 0 17px 18px;
  }

  .verification-block {
    margin-right: 17px;
    margin-left: 17px;
    padding: 14px 13px;
  }

  .verification-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .check-grid {
    grid-template-columns: 1fr;
  }

  .warning-panel {
    margin-right: 17px;
    margin-left: 17px;
  }

  .help-content {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
  }

  .dialog-heading {
    padding: 20px;
  }

  .dialog-footer {
    align-items: flex-start;
    flex-direction: column-reverse;
    gap: 10px;
    padding: 14px 20px 18px;
  }

  .dialog-footer .primary-small {
    width: 100%;
  }

  .toast {
    right: 12px;
    bottom: 12px;
    left: 12px;
    max-width: none;
  }

  .site-footer {
    padding: 14px 16px 22px;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}

@media (max-width: 420px) {
  .ghost-button span:last-child {
    display: none;
  }

  .ghost-button {
    padding: 8px;
  }

  .panel-intro h1 {
    font-size: 29px;
  }

  .tool-label {
    font-size: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}