/* ==========================================
   GRAN JOTA METRONOME - DESIGN SYSTEM & STYLE
   ========================================== */

:root {
  /* Colors */
  --bg-primary: #0a0712;
  --bg-secondary: #120e24;
  --card-bg: rgba(26, 21, 46, 0.5);
  --card-border: rgba(255, 255, 255, 0.07);
  --card-glow: rgba(157, 78, 221, 0.15);
  
  --color-primary: #9d4edd;      /* Neon Violet */
  --color-primary-glow: rgba(157, 78, 221, 0.6);
  --color-secondary: #00f5d4;    /* Neon Teal */
  --color-secondary-glow: rgba(0, 255, 212, 0.6);
  --color-accent: #ff007f;       /* Neon Pink */
  --color-accent-glow: rgba(255, 0, 127, 0.6);
  
  --text-main: #f3f0ff;
  --text-muted: #9e95c4;
  --text-dark: #0a0712;
  
  /* Fonts */
  --font-title: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: all 0.15s ease-out;
}

/* Base Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Background Glowing Orbs */
.glass-bg-decor {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: -1;
  pointer-events: none;
}

.decor-1 {
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, rgba(0,0,0,0) 70%);
  top: -10%;
  left: -10%;
  opacity: 0.45;
}

.decor-2 {
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--color-secondary-glow) 0%, rgba(0,0,0,0) 70%);
  bottom: -15%;
  right: -10%;
  opacity: 0.35;
}

.decor-3 {
  width: 30vw;
  height: 30vw;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, rgba(0,0,0,0) 70%);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.2;
}

/* Application Container */
.app-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  gap: 20px;
}

/* Header */
.app-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-area h1 {
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #fff 30%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  background: linear-gradient(135deg, var(--color-primary), #bd7bf5);
  color: var(--text-dark);
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 30px;
  box-shadow: 0 0 10px var(--color-primary-glow);
  letter-spacing: 1px;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  box-shadow: 0 0 8px var(--color-secondary);
  animation: pulse-glow 2s infinite alternate;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 4px;
}

.header-actions {
  margin-top: 12px;
}

/* Glassmorphism Card base style */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4), 0 0 15px var(--card-glow);
}

/* Main Layout Grid */
.app-main-grid {
  display: grid;
  grid-template-columns: 1.1fr 1.3fr;
  gap: 24px;
  align-items: start;
}

/* Left Panel: Metronome control */
.main-control-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Display Card */
.display-card {
  position: relative;
  background: linear-gradient(145deg, rgba(20, 15, 38, 0.7) 0%, rgba(10, 8, 22, 0.7) 100%);
  border-color: rgba(157, 78, 221, 0.2);
}

.active-section-indicator {
  display: flex;
  flex-direction: column;
  margin-bottom: 16px;
}

.active-section-indicator .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-primary);
  font-weight: 600;
}

.active-section-indicator .value {
  font-size: 1.25rem;
  font-family: var(--font-title);
  font-weight: 700;
  color: #ffffff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.digital-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.digital-box {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.box-label {
  font-size: 0.7rem;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.box-value {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
}

.measure-box .box-value {
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(157, 78, 221, 0.4);
}

.beat-box .box-value {
  color: var(--color-secondary);
  text-shadow: 0 0 10px rgba(0, 245, 212, 0.4);
}

.box-sub {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Pendulum Visualizer */
.pendulum-container {
  height: 12px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.pendulum-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0%;
  background: linear-gradient(90deg, transparent, var(--color-secondary));
  opacity: 0.2;
}

.pendulum-ball {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 16px;
  margin-left: -8px;
  background-color: var(--color-secondary);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--color-secondary);
  transition: transform 0.05s linear;
}

/* Beat Indicators */
.beat-indicators-wrapper {
  display: flex;
  justify-content: center;
  width: 100%;
}

.beat-indicators {
  display: flex;
  gap: 14px;
}

.beat-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-fast);
  position: relative;
}

.beat-dot.accented {
  border-color: var(--color-accent);
}

.beat-dot.active {
  background-color: var(--color-secondary);
  box-shadow: 0 0 15px var(--color-secondary);
  transform: scale(1.2);
}

.beat-dot.accented.active {
  background-color: var(--color-accent);
  box-shadow: 0 0 15px var(--color-accent);
}

/* Controls Card */
.tempo-display-area {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.tempo-value-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tempo-value {
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
}

.tempo-unit {
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  font-weight: 600;
  margin-top: 4px;
}

.tempo-nudge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tempo-nudge:hover {
  background: var(--color-primary);
  color: var(--text-dark);
  border-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.tempo-nudge:active {
  transform: scale(0.95);
}

/* Slider Controls */
.slider-container {
  margin-bottom: 24px;
}

.custom-slider {
  width: 100%;
  -webkit-appearance: none;
  background: rgba(255, 255, 255, 0.1);
  height: 6px;
  border-radius: 3px;
  outline: none;
  margin-bottom: 8px;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-secondary);
  cursor: pointer;
  box-shadow: 0 0 10px var(--color-secondary-glow);
  transition: var(--transition-fast);
}

.custom-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-tap {
  background: rgba(157, 78, 221, 0.15);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-tap:hover {
  background: var(--color-primary);
  color: var(--text-dark);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

.btn-tap:active {
  transform: scale(0.92);
}

/* Playback Control Bar */
.playback-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-title);
  font-weight: 700;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.75rem;
}

.btn-xs {
  padding: 4px 8px;
  font-size: 0.7rem;
}

.btn-block {
  width: 100%;
  padding: 12px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #b363ff);
  color: #fff;
  box-shadow: 0 4px 15px rgba(157, 78, 221, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(157, 78, 221, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  padding: 0;
}

.btn-icon:hover {
  transform: scale(1.05);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-play {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-secondary), #00d2b4);
  color: var(--text-dark);
  box-shadow: 0 6px 20px rgba(0, 245, 212, 0.4);
}

.btn-play:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 25px rgba(0, 245, 212, 0.6);
}

.btn-play:active {
  transform: scale(0.95);
}

.hidden {
  display: none !important;
}

/* Settings Controls */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.setting-item label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.custom-select {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  padding: 10px 12px;
  border-radius: 8px;
  outline: none;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.custom-select:focus {
  border-color: var(--color-primary);
}

.volume-slider-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-mute-toggle {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.btn-mute-toggle:hover {
  color: var(--color-secondary);
}

.volume-slider {
  flex-grow: 1;
  margin-bottom: 0;
}

.checkbox-item {
  flex-direction: row;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.switch-label {
  font-size: 0.8rem !important;
  color: var(--text-main) !important;
  user-select: none;
}

/* Apple style switch */
.switch-container {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 22px;
}

.switch-container input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  transition: .3s;
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: .3s;
}

input:checked + .switch-slider {
  background-color: var(--color-primary);
}

input:checked + .switch-slider:before {
  transform: translateX(22px);
}

/* Right Panel Styles */
.section-editor-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Trainer Card */
.trainer-card {
  border-color: rgba(0, 245, 212, 0.15);
}

.card-header-with-action {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.card-header-with-action h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.trainer-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.global-speed-factor-section {
  background: rgba(0, 0, 0, 0.2);
  padding: 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.speed-factor-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.85rem;
}

.speed-real-bpm {
  font-family: var(--font-mono);
  color: var(--color-secondary);
}

.speed-presets {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.btn-preset-speed {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 4px 2px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-preset-speed:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn-preset-speed.active {
  background: var(--color-secondary);
  color: var(--text-dark);
  border-color: var(--color-secondary);
  font-weight: bold;
}

.trainer-settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  transition: opacity 0.3s;
}

.trainer-settings-grid.disabled {
  opacity: 0.3;
  pointer-events: none;
}

.trainer-input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.trainer-input-group label {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.custom-input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  padding: 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  width: 100%;
}

.custom-input:focus {
  border-color: var(--color-secondary);
}

.trainer-status {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
  border-left: 2px solid var(--color-secondary);
  padding-left: 8px;
}

.trainer-status.active {
  border-color: var(--color-accent);
  color: #fff;
  background: rgba(255, 0, 127, 0.05);
  padding: 6px 8px;
  border-radius: 0 4px 4px 0;
}

/* Playlist Card */
.playlist-card {
  display: flex;
  flex-direction: column;
}

.playlist-buttons {
  display: flex;
  gap: 6px;
}

.sections-list {
  overflow-y: auto;
  max-height: 620px;
  min-height: 320px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-right: 4px;
}

/* Custom Scrollbar for list */
.sections-list::-webkit-scrollbar {
  width: 6px;
}

.sections-list::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 3px;
}

.sections-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

.sections-list::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Section Item Row */
.section-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  transition: var(--transition-fast);
}

.section-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.section-item.active {
  border-color: var(--color-secondary);
  background: rgba(0, 245, 212, 0.03);
  box-shadow: inset 0 0 10px rgba(0, 245, 212, 0.05);
}

.section-item.active .section-index {
  color: var(--color-secondary);
  font-weight: bold;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  width: 20px;
  text-align: center;
}

.section-details-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.section-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.input-section-title {
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 2px 0;
  width: 100%;
  outline: none;
  transition: var(--transition-fast);
}

.input-section-title:focus {
  border-color: var(--color-primary);
  background: rgba(0, 0, 0, 0.2);
  padding: 2px 6px;
  border-radius: 4px 4px 0 0;
}

.section-settings-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.section-param {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.section-param select,
.section-param input {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  padding: 2px 4px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  outline: none;
}

.section-param select:focus,
.section-param input:focus {
  border-color: var(--color-primary);
}

.section-param input[type="number"] {
  width: 48px;
}

.section-note {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 2px;
}

.input-section-note {
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.7rem;
  width: 100%;
  outline: none;
}

.input-section-note:focus {
  border-color: var(--color-primary);
  background: rgba(0,0,0,0.2);
  padding: 2px 4px;
  border-radius: 2px;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-item-action {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-item-action:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}

.btn-item-action.play-from-here:hover {
  background: rgba(0, 245, 212, 0.15);
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn-item-action.loop-toggle.active {
  background: rgba(157, 78, 221, 0.2);
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 5px var(--color-primary-glow);
}

.btn-item-action.delete-item:hover {
  background: rgba(255, 0, 127, 0.15);
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.section-reorder-buttons {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.btn-reorder {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2px;
  border-radius: 2px;
}

.btn-reorder:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

/* Footer Styling */
.app-footer {
  margin-top: auto;
  padding: 16px 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.app-footer p {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Keyframes */
@keyframes pulse-glow {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 4px var(--color-secondary);
  }
  100% {
    transform: scale(1.1);
    box-shadow: 0 0 12px var(--color-secondary);
  }
}

/* AI Info Card Styles */
.ai-info-card {
  margin-top: 16px;
  border-color: rgba(0, 245, 212, 0.1);
  background: linear-gradient(135deg, rgba(20, 15, 38, 0.6) 0%, rgba(10, 8, 22, 0.6) 100%);
  padding: 16px 20px;
}

.ai-info-card:hover {
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4), 0 0 15px rgba(0, 245, 212, 0.08);
  border-color: rgba(0, 245, 212, 0.2);
}

.ai-info-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.ai-icon {
  color: var(--color-secondary);
  filter: drop-shadow(0 0 4px var(--color-secondary-glow));
}

.ai-info-header h4 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.ai-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 10px;
}

.ai-info-steps ol {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-info-steps li {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.ai-info-steps li strong {
  color: var(--color-secondary);
}

.ai-info-steps li code {
  background: rgba(0, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--color-primary);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Responsiveness */
@media (max-width: 1024px) {
  .app-main-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .app-container {
    padding: 12px;
  }
  
  .digital-grid {
    gap: 10px;
  }
  
  .box-value {
    font-size: 2.2rem;
  }
  
  .tempo-value {
    font-size: 3rem;
  }
  
  .playback-controls {
    gap: 10px;
  }
  
  .btn-play {
    width: 60px;
    height: 60px;
  }
  
  .section-settings-row {
    gap: 4px;
  }
}

/* ==========================================
   AI ASSISTANT MODAL WINDOW STYLING
   ========================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(5, 3, 10, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
  display: none !important;
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  width: 92%;
  max-width: 500px;
  background: var(--bg-secondary) !important;
  border: 1.5px solid var(--color-secondary) !important;
  box-shadow: 0 10px 40px rgba(0, 255, 212, 0.15) !important;
  padding: 24px;
  border-radius: 16px;
  animation: modal-zoom 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modal-zoom {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 12px;
}

.btn-close-modal {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition-fast);
  padding: 0 4px;
}

.btn-close-modal:hover {
  color: var(--color-accent);
}