:root {
  color-scheme: dark;
  --bg-base: #14111E;
  --bg-child: #0E0C16;
  --bg-popup: #1D182B;
  --bg-menu: #110E1A;
  --bg-frame: #1A1626;
  --bg-frame-hover: #27213B;
  --bg-input: #151120;
  --bg-button: #251E3A;
  --bg-button-hover: #342A52;
  --border: #362F4F;
  --border-subtle: rgba(255, 255, 255, 0.07);
  --text: #ECE9F8;
  --text-muted: #9E98B8;
  --accent: #B197FC;
  --accent-glow: rgba(177, 151, 252, 0.28);
  --accent-contrast: #110E1A;
  --accent-2: #F28DC7;
  --accent-3: #7DD3C8;
  --good: #59D98E;
  --warn: #F9E2AF;
  --bad: #F38BA8;
  --brand-color: var(--accent);
}

*, *::before, *::after {
  box-sizing: border-box;
}

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

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-base);
  color: var(--text);
  accent-color: var(--accent);
  scrollbar-color: var(--border) var(--bg-child);
  scrollbar-width: thin;
  font-family: 'BUEFont', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13.5px;
  -webkit-font-smoothing: antialiased;
}

/* Apply user-select: none only to UI chrome, keeping text fields selectable */
.titlebar, .editor-toolbar, .editor-ribbon, .ribbon-menubar, .menu-card, .song-row, .nav-pill, .tb-btn, .icon-btn, .btn-primary, .game-hud, #ctx-menu {
  user-select: none;
  -webkit-user-select: none;
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ============================================================
   MODERN FORM CONTROLS (Textboxes, Selects, Sliders, Switches)
   ============================================================ */

/* Base Textboxes & Number Inputs */
.input-box,
input[type="text"],
input[type="number"],
input[type="search"],
textarea {
  appearance: none;
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 7px 12px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  outline: none;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.25), 0 1px 0 rgba(255, 255, 255, 0.03);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

input[type="number"] {
  font-variant-numeric: tabular-nums;
}

.input-box::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.65;
}

.input-box:hover,
input[type="text"]:hover,
input[type="number"]:hover,
select.input-box:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  background: var(--bg-frame);
}

.input-box:focus,
.input-box:focus-visible,
input[type="text"]:focus-visible,
input[type="number"]:focus-visible,
select.input-box:focus-visible {
  border-color: var(--accent);
  background: var(--bg-frame);
  box-shadow: 0 0 0 3px var(--accent-glow), inset 0 1px 2px rgba(0, 0, 0, 0.2);
  outline: none;
}

/* User-interaction validity states (excludes range sliders) */
input:not([type="range"]):user-invalid {
  border-color: var(--bad);
  box-shadow: 0 0 0 3px rgba(243, 139, 168, 0.22);
}
input:not([type="range"]):user-valid {
  border-color: var(--border);
}

/* Auto-fitting form fields with safe min/max constraints */
.input-autofit {
  field-sizing: content;
  width: auto;
  min-inline-size: 12ch;
  max-inline-size: 38ch;
}

/* Modern Styled Select Dropdowns */
select.input-box,
.styled-select {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--bg-input);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239E98B8' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px;
  padding: 6px 30px 6px 11px;
  border: 1px solid var(--border);
  border-radius: 9px;
  color: var(--text);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  field-sizing: content;
  max-inline-size: 36ch;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

select.input-box option,
.styled-select option,
.tb-field select option {
  background-color: var(--bg-popup);
  color: var(--text);
  padding: 6px;
}

/* Compact Toolbar Capsule Fields (.tb-field) */
.tb-field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px 9px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.22);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.tb-field:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: var(--bg-frame);
}

.tb-field:focus-within {
  border-color: var(--accent);
  background: var(--bg-frame);
  box-shadow: 0 0 0 2.5px var(--accent-glow);
}

.tb-field > span {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-muted);
  font-weight: 700;
}

.tb-field input[type="number"],
.tb-field input[type="text"] {
  background: transparent;
  border: none;
  box-shadow: none;
  color: var(--text);
  font-size: 12.5px;
  font-weight: 700;
  padding: 2px 2px;
  width: 54px;
  outline: none;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.tb-field input[type="number"]:focus-visible,
.tb-field input[type="text"]:focus-visible {
  box-shadow: none;
}

.tb-field select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%239E98B8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0px center;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 14px 2px 2px;
  outline: none;
  cursor: pointer;
  field-sizing: content;
  max-inline-size: 24ch;
}

/* Modern Toggle Switch for Checkboxes */
input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 38px;
  height: 21px;
  border-radius: 999px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  cursor: pointer;
  vertical-align: middle;
  flex-shrink: 0;
  margin: 0;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.35);
  transition: background-color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

input[type="checkbox"]::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--text-muted);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  transition: transform 0.18s cubic-bezier(0.2, 0.85, 0.3, 1.1), background-color 0.18s ease;
}

input[type="checkbox"]:hover {
  border-color: var(--accent);
}

input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

input[type="checkbox"]:checked::before {
  transform: translateX(17px);
  background: var(--accent-contrast);
}

input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Brand-Consistent Range Slider */
input[type="range"] {
  --slider-track-size: 0.42rem;
  --slider-thumb-size: 1.05rem;
  --slider-track-radius: 999px;
  --slider-thumb-radius: 50%;
  --slider-track-color: var(--bg-input);
  --slider-fill-color: var(--accent);
  --slider-thumb-color: var(--text);
  --slider-direction: to right;
  --attr-min: 0;
  --attr-max: 100;
  --control-value: 50;
  --slider-progress: calc(
    (var(--control-value) - var(--attr-min)) /
    (var(--attr-max) - var(--attr-min)) * 100%
  );

  appearance: none;
  -webkit-appearance: none;
  inline-size: 180px;
  block-size: 1.8rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  block-size: var(--slider-track-size);
  border: 1px solid var(--border);
  border-radius: var(--slider-track-radius);
  background: linear-gradient(
    var(--slider-direction),
    var(--slider-fill-color) var(--slider-progress),
    var(--slider-track-color) var(--slider-progress)
  );
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  margin-block-start: calc((var(--slider-track-size) - var(--slider-thumb-size)) / 2 - 1px);
  border: 2px solid var(--slider-fill-color);
  border-radius: var(--slider-thumb-radius);
  background: var(--slider-thumb-color);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.12);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

input[type="range"]::-moz-range-track {
  block-size: var(--slider-track-size);
  border: 1px solid var(--border);
  border-radius: var(--slider-track-radius);
  background: var(--slider-track-color);
}

input[type="range"]::-moz-range-progress {
  block-size: var(--slider-track-size);
  border-radius: var(--slider-track-radius);
  background: var(--slider-fill-color);
}

input[type="range"]::-moz-range-thumb {
  inline-size: var(--slider-thumb-size);
  block-size: var(--slider-thumb-size);
  border: 2px solid var(--slider-fill-color);
  border-radius: var(--slider-thumb-radius);
  background: var(--slider-thumb-color);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
}

input[type="range"]:focus-visible {
  outline: 2px solid var(--slider-fill-color);
  outline-offset: 4px;
}

/* ============================================================
   TOP TITLEBAR & NAVIGATION
   ============================================================ */
.titlebar {
  height: 36px;
  min-height: 36px;
  background: var(--bg-menu);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  z-index: 100;
}
.titlebar-left {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.2px;
}
.titlebar-left img {
  width: 18px;
  height: 18px;
  border-radius: 4px;
}
.titlebar-center {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-pill {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  padding: 4px 12px;
  border-radius: 7px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.nav-pill:hover {
  color: var(--text);
  background: var(--bg-frame-hover);
}
.nav-pill.active {
  color: var(--text);
  background: var(--bg-button);
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}
.titlebar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn {
  background: var(--bg-frame);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 10px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
}
.icon-btn:hover {
  color: var(--text);
  background: var(--bg-button-hover);
  border-color: var(--accent);
}
.icon-btn:focus-visible,
.tb-btn:focus-visible,
.nav-pill:focus-visible,
.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============================================================
   SCREENS & LAYOUT
   ============================================================ */
.screen {
  position: relative;
  flex: 1;
  width: 100%;
  height: calc(100vh - 36px);
  display: none;
  overflow: hidden;
}
.screen.active {
  display: flex;
}

/* MENU SCREEN */
#screen-menu {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  position: relative;
}
#screen-menu::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--bg-base) 55%, transparent) 0%, color-mix(in srgb, var(--bg-base) 88%, transparent) 100%);
  pointer-events: none;
}
.menu-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 440px;
  width: 92%;
}
.menu-logo {
  max-width: 420px;
  width: 85%;
  height: auto;
  margin-bottom: 6px;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.6));
  animation: floatIn 0.45s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.menu-greeting {
  font-size: 16.5px;
  font-weight: 500;
  color: var(--text);
  opacity: 0.92;
  margin-bottom: 20px;
}
.menu-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 390px;
  max-width: 100%;
}
.menu-card {
  position: relative;
  height: 64px;
  background: color-mix(in srgb, var(--bg-frame) 86%, transparent);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  align-items: center;
  padding: 0 18px 0 15px;
  cursor: pointer;
  transition: all 0.16s cubic-bezier(0.2, 0.8, 0.2, 1);
  backdrop-filter: blur(12px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.28);
}
.menu-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 0;
  background: var(--card-accent, var(--accent));
  border-radius: 2px;
  transition: height 0.16s ease;
}
.menu-card:hover, .menu-card.focused {
  background: color-mix(in srgb, var(--bg-frame-hover) 92%, transparent);
  border-color: var(--card-accent, var(--accent));
  transform: translateX(4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.36);
}
.menu-card:hover::before, .menu-card.focused::before {
  height: 36px;
}
.menu-card-icon {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: color-mix(in srgb, var(--card-accent, var(--accent)) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--accent)) 30%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 14px;
  color: var(--card-accent, var(--accent));
  font-size: 17px;
  flex-shrink: 0;
}
.menu-card-text {
  flex: 1;
}
.menu-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}
.menu-card-sub {
  font-size: 12px;
  color: var(--text-muted);
}
.menu-card-arrow {
  color: var(--text-muted);
  font-size: 18px;
  transition: transform 0.15s;
}
.menu-card:hover .menu-card-arrow, .menu-card.focused .menu-card-arrow {
  transform: translateX(4px);
  color: var(--text);
}
.menu-footer {
  position: absolute;
  bottom: 14px;
  left: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 2;
  font-size: 12px;
  color: var(--text-muted);
}
.menu-links {
  display: flex;
  gap: 14px;
}
.menu-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.menu-links a:hover {
  color: var(--accent);
}

/* PLAY STATE (Song Select) */
#screen-play {
  flex-direction: column;
  background-size: cover;
  background-position: center;
  position: relative;
}
#screen-play::before {
  content: "";
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--bg-base) 88%, transparent);
  backdrop-filter: blur(14px);
  pointer-events: none;
}
.play-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 20px 28px;
  gap: 16px;
}
.play-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.play-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}
.play-title {
  font-size: 22px;
  font-weight: 800;
}
.play-search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}
.play-body {
  flex: 1;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 20px;
  min-height: 0;
}
.song-list-panel {
  background: color-mix(in srgb, var(--bg-frame) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
}
.song-list-toolbar {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: color-mix(in srgb, var(--bg-child) 70%, transparent);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.song-list-items {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.song-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--bg-child) 55%, transparent);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all 0.14s ease;
}
.song-row:hover {
  background: var(--bg-frame-hover);
  border-color: var(--border);
}
.song-row.selected {
  background: var(--bg-button);
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.song-row-main {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.song-row-title {
  font-weight: 700;
  font-size: 14.5px;
}
.song-row-sub {
  font-size: 11.5px;
  color: var(--text-muted);
}
.song-row-badges {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lvl-badge {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 700;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 42%, transparent);
}
.song-detail-panel {
  background: color-mix(in srgb, var(--bg-frame) 88%, transparent);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-y: auto;
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
}
.detail-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 14px 0;
}
.stat-card {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}
.stat-card-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.stat-card-val {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  border-radius: 10px;
  padding: 11px 20px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.2px;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--accent-glow);
  transition: filter 0.15s, transform 0.1s, box-shadow 0.15s;
}
.btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 6px 20px var(--accent-glow);
}
.btn-primary:active {
  transform: scale(0.98);
}

/* ============================================================
   EDITOR & GAMEPLAY SCREEN + MINIMALIST RIBBON MENUBAR
   ============================================================ */
#screen-editor {
  flex-direction: column;
  background: var(--bg-base);
}

.editor-ribbon {
  position: relative;
  height: 34px;
  min-height: 34px;
  background: var(--bg-menu);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  z-index: 60;
}

.ribbon-menubar {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 100%;
}

.ribbon-menu {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.ribbon-trigger {
  background: transparent;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 4px 10px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.ribbon-trigger::after {
  content: "▾";
  font-size: 9.5px;
  opacity: 0.6;
}

.ribbon-trigger:hover,
.ribbon-menu.open .ribbon-trigger {
  background: var(--bg-frame-hover);
  border-color: var(--border);
  color: var(--accent);
}

.ribbon-dropdown {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-width: 248px;
  background: var(--bg-popup);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 6px;
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.72);
  display: none;
  flex-direction: column;
  gap: 1px;
  z-index: 250;
}

.ribbon-menu.open .ribbon-dropdown {
  display: flex;
}

.ribbon-section-title {
  padding: 5px 10px 3px;
  font-size: 10.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent);
  opacity: 0.9;
}

.ribbon-item {
  background: transparent;
  border: none;
  border-radius: 7px;
  padding: 6px 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 500;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  width: 100%;
  transition: background 0.12s ease, color 0.12s ease;
}

.ribbon-item:hover:not(:disabled) {
  background: var(--bg-button-hover);
  color: var(--text);
}

.ribbon-item:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.ribbon-item .sc {
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.ribbon-item .chk-mark {
  display: inline-block;
  width: 15px;
  color: var(--accent);
  font-weight: 800;
}

.ribbon-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 2px;
}

.ribbon-inline-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.ribbon-inline-row input[type="number"] {
  width: 78px;
  padding: 4px 8px;
  font-size: 12px;
  text-align: right;
}

/* Centered AUTO pill in Ribbon (like EditorState.cpp line 2472) */
.ribbon-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  pointer-events: auto;
}

.auto-pill-btn {
  background: var(--bg-frame);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 13px;
  font-family: inherit;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.6px;
  cursor: pointer;
  transition: all 0.14s ease;
}

.auto-pill-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.auto-pill-btn.active {
  background: #2E8B57;
  border-color: #59D98E;
  color: #FFFFFF;
  box-shadow: 0 0 12px rgba(89, 217, 142, 0.45);
}

/* Right-aligned compact Transport in Ribbon (like EditorState.cpp line 2498) */
.ribbon-transport {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
}

.transport-btn {
  background: var(--bg-frame);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 26px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11.5px;
  cursor: pointer;
  padding: 0;
  transition: all 0.12s ease;
}

.transport-btn:hover {
  background: var(--bg-button-hover);
  border-color: var(--accent);
}

.transport-btn.active {
  background: var(--bg-button);
  border-color: var(--accent);
  color: var(--accent);
}

.transport-scrubber {
  inline-size: 110px !important;
  block-size: 1.2rem !important;
}

.transport-time {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.transport-badge {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.12s ease;
}

.transport-badge:hover {
  border-color: var(--accent);
}

.snap-pill {
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 800;
  border: 1px solid var(--border);
  background: var(--bg-input);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.snap-pill[data-snap="4"] { color: #F38BA8; border-color: rgba(243, 139, 168, 0.45); }
.snap-pill[data-snap="2"] { color: #89B4FA; border-color: rgba(137, 180, 250, 0.45); }
.snap-pill[data-snap="1"] { color: #F9E2AF; border-color: rgba(249, 226, 175, 0.45); }

.tb-btn {
  background: var(--bg-frame);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 10px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  transition: all 0.14s ease;
}
.tb-btn:hover {
  background: var(--bg-button-hover);
  border-color: var(--accent);
}
.tb-btn.active {
  background: var(--bg-button);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Workspace Split Area */
.editor-workspace {
  position: relative;
  flex: 1;
  display: flex;
  width: 100%;
  height: calc(100% - 34px);
  overflow: hidden;
}
.pane-chart {
  position: relative;
  height: 100%;
  background: var(--bg-child);
  overflow: hidden;
}
.pane-splitter {
  width: 6px;
  background: var(--border);
  cursor: col-resize;
  transition: background 0.15s;
  z-index: 15;
}
.pane-splitter:hover, .pane-splitter.dragging {
  background: var(--accent);
}
.pane-game {
  position: relative;
  height: 100%;
  background: #09080D;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
#chart-canvas {
  width: 100%;
  height: 100%;
  display: block;
}
#game-canvas {
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 4 / 3;
  display: block;
  box-shadow: 0 0 36px rgba(0,0,0,0.8);
}

/* Game HUD Overlay */
.game-hud {
  position: absolute;
  top: 12px;
  left: 16px;
  right: 16px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
}
.hud-card {
  background: color-mix(in srgb, var(--bg-menu) 82%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 10px;
  padding: 8px 14px;
  backdrop-filter: blur(8px);
  pointer-events: auto;
}
.hud-score {
  font-size: 26px;
  font-weight: 800;
  color: #FFD250;
  text-shadow: 0 0 12px rgba(255, 140, 0, 0.45);
  font-variant-numeric: tabular-nums;
}
.hud-sub {
  font-size: 11.5px;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  margin-top: 2px;
}

/* Modals & Floating Windows */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(6, 5, 12, 0.68);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.modal-backdrop.open {
  display: flex;
}
.modal-window {
  background: var(--bg-popup);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 700px;
  max-width: 94vw;
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0,0,0,0.65);
  overflow: hidden;
}
.modal-header {
  padding: 14px 20px;
  background: var(--bg-menu);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 800;
}
.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}
.form-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}
.form-row label {
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
}
.form-row .hint {
  display: block;
  font-size: 11.5px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Theme Swatch Grid inside Options */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(145px, 1fr));
  gap: 8px;
  margin: 8px 0 14px;
}
.theme-swatch-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
  text-align: left;
}
.theme-swatch-btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.theme-swatch-btn.active {
  border-color: var(--accent);
  background: var(--bg-button);
  box-shadow: 0 0 0 2px var(--accent-glow);
}
.theme-dots {
  display: inline-flex;
  gap: 3px;
  flex-shrink: 0;
}
.theme-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.2);
}

/* Context Menu */
#ctx-menu {
  position: fixed;
  background: var(--bg-popup);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 6px;
  min-width: 215px;
  box-shadow: 0 12px 34px rgba(0,0,0,0.65);
  display: none;
  z-index: 300;
}
.ctx-item {
  padding: 7px 11px;
  border-radius: 7px;
  font-size: 12.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  color: var(--text);
  transition: background 0.12s;
}
.ctx-item:hover {
  background: var(--bg-button-hover);
}
.ctx-item span.sc {
  color: var(--text-muted);
  font-size: 11px;
}
.ctx-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* Result End Card */
.result-rank {
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  text-shadow: 0 0 24px currentColor;
}

/* Original C++ "Configure audio" & MessageBox Dialog Styles */
.cfg-cand-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.bpm-cand-btn {
  background: var(--bg-button);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 4px 10px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: all 0.14s ease;
}

.bpm-cand-btn:hover {
  background: var(--bg-button-hover);
  border-color: var(--accent);
  color: var(--accent);
}

.bpm-cand-btn.primary {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.focus-seg-group {
  display: inline-flex;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
  gap: 2px;
}

.focus-seg-btn {
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: 6px;
  padding: 4px 11px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
}

.focus-seg-btn.active {
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
}

/* Background Selector Cards */
.bg-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  margin: 10px 0 14px;
}

.bg-card-btn {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border-radius: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: all 0.14s ease;
}

.bg-card-btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.bg-card-btn.active {
  border-color: var(--accent);
  background: var(--bg-button);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.bg-card-preview {
  width: 100%;
  height: 54px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background-size: cover;
  background-position: center;
}

@keyframes floatIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}