/* Ultra EQ — Audiophile Studio Theme (Real App Themes from Flutter Codebase) */
:root {
  --bg-dark: #070A10;
  --bg-card: #0D121D;
  --bg-card-hover: #131A29;
  --bg-surface: #172033;
  --gold-glow: #0091FF;
  --gold-bright: #38BDF8;
  --gold-dim: rgba(0, 145, 255, 0.15);
  --cyan-accent: #0091FF;
  --cyan-glow: rgba(0, 145, 255, 0.25);
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border-subtle: #1E293B;
  --border-highlight: #334155;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Consolas, "Courier New", monospace;
  --shadow-lux: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 40px rgba(0, 145, 255, 0.12);
}

/* REAL APP THEMES (mobile_app/lib/main.dart) */
[data-theme="blue"] {
  --gold-glow: #0091FF;
  --gold-bright: #38BDF8;
  --gold-dim: rgba(0, 145, 255, 0.15);
  --cyan-accent: #0091FF;
  --cyan-glow: rgba(0, 145, 255, 0.25);
  --bg-dark: #070A10;
  --bg-card: #0D121D;
  --bg-card-hover: #131A29;
  --border-subtle: #1E293B;
}

[data-theme="emerald"] {
  --gold-glow: #10B981;
  --gold-bright: #34D399;
  --gold-dim: rgba(16, 185, 129, 0.15);
  --cyan-accent: #059669;
  --cyan-glow: rgba(5, 150, 105, 0.25);
  --bg-dark: #05100B;
  --bg-card: #0A1F17;
  --bg-card-hover: #0E2E22;
  --border-subtle: #174E3B;
}

[data-theme="orange"] {
  --gold-glow: #FF6D00;
  --gold-bright: #FFA040;
  --gold-dim: rgba(255, 109, 0, 0.16);
  --cyan-accent: #FF9100;
  --cyan-glow: rgba(255, 109, 0, 0.28);
  --bg-dark: #120A05;
  --bg-card: #1F120A;
  --bg-card-hover: #2E1A0F;
  --border-subtle: #4D2B14;
}

[data-theme="purple"] {
  --gold-glow: #8B5CF6;
  --gold-bright: #A78BFA;
  --gold-dim: rgba(139, 92, 246, 0.16);
  --cyan-accent: #C084FC;
  --cyan-glow: rgba(139, 92, 246, 0.28);
  --bg-dark: #0A0814;
  --bg-card: #141026;
  --bg-card-hover: #1C1636;
  --border-subtle: #2D2354;
}

[data-theme="red"] {
  --gold-glow: #EF4444;
  --gold-bright: #F87171;
  --gold-dim: rgba(239, 68, 68, 0.16);
  --cyan-accent: #F43F5E;
  --cyan-glow: rgba(239, 68, 68, 0.28);
  --bg-dark: #140809;
  --bg-card: #220E10;
  --bg-card-hover: #331518;
  --border-subtle: #501D22;
}

[data-theme="yellow"] {
  --gold-glow: #FFD600;
  --gold-bright: #FFE54C;
  --gold-dim: rgba(255, 214, 0, 0.16);
  --cyan-accent: #FFAB00;
  --cyan-glow: rgba(255, 214, 0, 0.28);
  --bg-dark: #121005;
  --bg-card: #1E1A08;
  --bg-card-hover: #2B250C;
  --border-subtle: #4A4011;
}

[data-theme="spectrum"] {
  --gold-glow: #06B6D4;
  --gold-bright: #A855F7;
  --gold-dim: rgba(6, 182, 212, 0.16);
  --cyan-accent: #EC4899;
  --cyan-glow: rgba(168, 85, 247, 0.28);
  --bg-dark: #070914;
  --bg-card: #0F1326;
  --bg-card-hover: #161C38;
  --border-subtle: #232B54;
}

[data-theme="monochrome"] {
  --gold-glow: #FFFFFF;
  --gold-bright: #E2E8F0;
  --gold-dim: rgba(255, 255, 255, 0.14);
  --cyan-accent: #94A3B8;
  --cyan-glow: rgba(255, 255, 255, 0.2);
  --bg-dark: #0D0F12;
  --bg-card: #161A20;
  --bg-card-hover: #202630;
  --border-subtle: #303947;
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% -10%, var(--gold-dim) 0%, transparent 60%),
              radial-gradient(circle at 10% 30%, var(--cyan-glow) 0%, transparent 40%),
              var(--bg-dark);
  min-height: 100vh;
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation - Strict Single Line (Nothing Pushed Down) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 10, 16, 0.90);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 0;
  transition: all 0.3s ease;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 16px;
  width: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px var(--gold-glow));
  flex-shrink: 0;
}

.brand-logo-svg {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px var(--gold-glow));
  transition: filter 0.25s ease;
}

.brand-logo-svg .bar {
  fill: var(--gold-bright);
  transition: fill 0.25s ease;
}

[data-theme="spectrum"] .brand-logo-svg .b1 { fill: #06B6D4; }
[data-theme="spectrum"] .brand-logo-svg .b2 { fill: #2563EB; }
[data-theme="spectrum"] .brand-logo-svg .b3 { fill: #4F46E5; }
[data-theme="spectrum"] .brand-logo-svg .b4 { fill: #7C3AED; }
[data-theme="spectrum"] .brand-logo-svg .b5 { fill: #9333EA; }
[data-theme="spectrum"] .brand-logo-svg .b6 { fill: #C026D3; }
[data-theme="spectrum"] .brand-logo-svg .b7 { fill: #E11D48; }

.brand > span {
  white-space: nowrap;
  line-height: 1;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 3px 6px;
  border-radius: 4px;
  background: var(--gold-dim);
  color: var(--gold-bright);
  border: 1px solid rgba(255, 255, 255, 0.15);
  text-transform: uppercase;
  margin-left: 2px;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.05em;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
  white-space: nowrap;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--gold-bright);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Modern Compact Theme Dropdown Pill */
.theme-dropdown-wrap {
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 24, 38, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 6px 14px;
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.theme-toggle-btn:hover {
  border-color: var(--gold-bright);
  background: rgba(28, 36, 56, 0.95);
}

.theme-active-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
  background: var(--gold-glow);
  box-shadow: 0 0 8px var(--gold-glow);
  flex-shrink: 0;
}

.theme-toggle-btn .chevron {
  transition: transform 0.2s ease;
  color: var(--text-muted);
}

.theme-dropdown-wrap.open .theme-toggle-btn .chevron {
  transform: rotate(180deg);
}

.theme-menu-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 250px;
  background: rgba(13, 18, 29, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-highlight);
  border-radius: 14px;
  padding: 10px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(255, 255, 255, 0.05);
  display: none;
  z-index: 200;
  animation: fadeInPop 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-dropdown-wrap.open .theme-menu-popover {
  display: block;
}

@keyframes fadeInPop {
  from { opacity: 0; transform: translateY(-6px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.theme-menu-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 8px 8px 8px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 6px;
}

.theme-menu-grid {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 7px 10px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s ease;
}

.theme-option:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #FFF;
}

.theme-option.active {
  background: var(--gold-dim);
  border-color: var(--gold-glow);
  color: #FFF;
  font-weight: 700;
}

.theme-option .swatch {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 6px currentColor;
}

.theme-option .badge-default {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  padding: 1px 4px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
}

.nav-download-btn {
  font-size: 0.84rem;
  padding: 8px 16px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Theme dots & swatches */
.theme-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  transition: all 0.25s ease;
  box-shadow: 0 0 6px currentColor;
}

.dot-blue { background-color: #0091FF; color: #0091FF; }
.dot-emerald { background-color: #10B981; color: #10B981; }
.dot-orange { background-color: #FF6D00; color: #FF6D00; }
.dot-purple { background-color: #8B5CF6; color: #8B5CF6; }
.dot-red { background-color: #EF4444; color: #EF4444; }
.dot-yellow { background-color: #FFD600; color: #FFD600; }
.dot-spectrum { background: linear-gradient(135deg, #06B6D4, #A855F7); color: #06B6D4; }
.dot-silver { background-color: #FFFFFF; color: #FFFFFF; }

.theme-btn.active {
  font-weight: 800;
  transform: scale(1.02);
  background: var(--gold-dim) !important;
  color: #FFF !important;
  border: 1px solid var(--gold-glow);
}

/* Real App DSP Quick Bar & Presets */
.app-dsp-quickbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 20px;
  background: rgba(13, 18, 29, 0.6);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.quick-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  user-select: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.quick-chip.active, .quick-chip:hover {
  background: var(--gold-dim);
  border-color: var(--gold-glow);
  color: var(--gold-bright);
}

.app-presets-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: rgba(9, 13, 22, 0.85);
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.presets-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--gold-bright);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.presets-chips {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.preset-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 6px 14px;
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #FFF;
}

.preset-btn.active {
  background: var(--gold-dim);
  border-color: var(--gold-glow);
  color: #FFF;
  font-weight: 700;
  box-shadow: 0 0 12px var(--gold-dim);
}

/* Mockup Theme Switcher Bar */
.mockup-theme-switcher-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.switcher-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold-bright) 0%, var(--gold-glow) 100%);
  color: #070A10;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--gold-dim);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.55);
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-highlight);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-glow);
  transform: translateY(-2px);
}

/* Store Badge Buttons (Coming Soon) */
.store-badges-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #0E121A;
  border: 1px solid var(--border-highlight);
  border-radius: 12px;
  padding: 10px 20px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.store-badge:hover {
  border-color: var(--gold-glow);
  background: #141A26;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.2);
}

.store-badge svg {
  flex-shrink: 0;
}

.store-badge-text {
  text-align: left;
  line-height: 1.2;
}

.store-badge-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gold-bright);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
}

.store-badge-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* Pre-Register Email Bar */
.pre-register-box {
  max-width: 480px;
  margin: 0 auto 36px;
}

.pre-register-form {
  display: flex;
  background: #0B0E14;
  border: 1px solid var(--border-highlight);
  border-radius: 12px;
  padding: 4px;
  transition: border-color 0.2s ease;
}

.pre-register-form:focus-within {
  border-color: var(--gold-glow);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.2);
}

.pre-register-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 12px 16px;
  color: #FFF;
  font-size: 0.95rem;
  outline: none;
  font-family: inherit;
}

.pre-register-input::placeholder {
  color: var(--text-muted);
}

.pre-register-btn {
  background: var(--gold-glow);
  color: #000;
  font-weight: 700;
  border: none;
  border-radius: 8px;
  padding: 0 20px;
  cursor: pointer;
  transition: background 0.2s ease;
  font-size: 0.9rem;
}

.pre-register-btn:hover {
  background: var(--gold-bright);
}

.pre-register-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--gold-bright);
  background: var(--gold-dim);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(180deg, #FFFFFF 20%, #CBD5E1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 36px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.specs-bar {
  display: flex;
  justify-content: center;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 56px;
}

.specs-bar span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.specs-bar span strong {
  color: var(--gold-bright);
}

/* Hero Showcase Banner */
.hero-media-wrap {
  position: relative;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-showcase-img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-lux);
  transition: transform 0.5s ease;
}

.hero-showcase-img:hover {
  transform: scale(1.01);
}

/* Interactive EQ Playground Section */
.interactive-section {
  padding: 100px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-head {
  text-align: center;
  margin-bottom: 50px;
}

.section-head h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================================================
   Interactive Studio Suite Showcase (Features You Get in the App)
   ========================================================================== */

/* Suite Module Navigation Tabs */
.suite-tabs-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.suite-tab-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 14px 18px;
  cursor: pointer;
  text-align: left;
  transition: all 0.25s ease;
  color: var(--text-secondary);
}

.suite-tab-btn:hover {
  background: #141B2B;
  border-color: var(--border-highlight);
  color: #FFFFFF;
}

.suite-tab-btn.active {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(20, 27, 43, 0.95) 100%);
  border-color: var(--gold-glow);
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 16px rgba(245, 158, 11, 0.15);
}

.suite-tab-btn.active .tab-icon {
  color: var(--gold-bright);
  filter: drop-shadow(0 0 6px var(--gold-glow));
}

.tab-icon {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.tab-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tab-title {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.tab-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  margin-top: 2px;
}

/* Suite Panels Visibility */
.suite-panel {
  display: none;
  animation: suiteFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.suite-panel.active {
  display: block;
}

@keyframes suiteFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Studio App Frame Container */
.app-console-frame {
  background: #0B0F19;
  border: 1px solid #1E293B;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.65), 0 0 40px rgba(0, 0, 0, 0.4);
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
}

/* App Header */
.app-frame-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1E293B;
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.app-brand-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo-svg .bar {
  fill: var(--gold-bright);
  transition: fill 0.3s ease;
}

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

.app-main-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #FFFFFF;
}

.app-pro-badge {
  background: linear-gradient(135deg, var(--gold-bright) 0%, #D97706 100%);
  color: #000000;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 900;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  box-shadow: 0 0 10px var(--gold-glow);
}

.app-sub-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.app-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.app-hdr-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #141C2E;
  border: 1px solid #1E293B;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.app-hdr-btn:hover {
  background: #1E293B;
  border-color: var(--gold-glow);
  color: var(--gold-bright);
}

/* EQ Card (Authentic Flutter UI) */
.app-eq-card {
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}

.app-eq-switch-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.eq-toggle-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.eq-label {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
}

.room-pill-status {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 20px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #94A3B8;
}

.room-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.app-ghost-btn {
  background: transparent;
  border: 1px solid #1E293B;
  border-radius: 6px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.app-ghost-btn:hover {
  border-color: var(--gold-glow);
  color: #FFFFFF;
}

/* Amp Drive & Volume Row */
.app-drive-volume-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.amp-drive-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid var(--gold-glow);
  color: var(--gold-bright);
  padding: 8px 16px;
  border-radius: 24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.2);
  transition: all 0.2s ease;
}

.amp-drive-pill:hover {
  background: rgba(245, 158, 11, 0.22);
}

.volume-slider-group {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 20px;
  padding: 6px 16px;
}

.vol-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.vol-num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--gold-bright);
  min-width: 42px;
}

/* App Custom Range Slider */
.app-range {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: #1E293B;
  border-radius: 3px;
  outline: none;
}

.app-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold-bright);
  cursor: pointer;
  box-shadow: 0 0 10px var(--gold-glow);
  border: 2px solid #FFFFFF;
}

/* Authentic Living Display Card */
.app-living-display-card {
  background: #060911;
  border: 1px solid #1E293B;
  border-radius: 14px;
  padding: 16px 20px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.8);
}

.living-hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.living-title {
  color: var(--text-secondary);
  font-weight: 700;
}

.blue-dot {
  color: #38BDF8;
  margin-right: 4px;
}

.touch-hint {
  color: var(--text-muted);
  margin-left: 8px;
  font-size: 0.68rem;
}

.living-3d-btn {
  background: transparent;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-bright);
  cursor: pointer;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.living-3d-btn:hover {
  text-decoration: underline;
}

/* 7 Animated Equalizer Bars + Hermite Spline Overlay */
.living-vis-container {
  position: relative;
  height: 150px;
  width: 100%;
  margin: 10px 0;
}

.living-bars-track {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 100%;
  padding: 0 24px;
}

.vis-bar {
  width: 26px;
  height: 50%;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 13px;
  position: relative;
  overflow: hidden;
  transition: height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: flex-end;
}

.vis-bar .bar-fill {
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(245, 158, 11, 0.2) 0%, var(--gold-glow) 70%, var(--gold-bright) 100%);
  border-radius: 13px;
  box-shadow: 0 0 12px var(--gold-glow);
}

.vis-bar .bar-cap-dot {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 8px;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 0 6px #FFFFFF;
}

.vis-bar.bar-1 { height: 35%; }
.vis-bar.bar-2 { height: 65%; }
.vis-bar.bar-3 { height: 80%; }
.vis-bar.bar-4 { height: 72%; }
.vis-bar.bar-5 { height: 68%; }
.vis-bar.bar-6 { height: 58%; }
.vis-bar.bar-7 { height: 45%; }

.living-spline-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.spline-curve-line {
  fill: none;
  stroke: var(--gold-bright);
  stroke-width: 3.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 6px var(--gold-glow));
  transition: d 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.spline-node {
  fill: #FFFFFF;
  stroke: var(--gold-bright);
  stroke-width: 2.5;
  filter: drop-shadow(0 0 5px var(--gold-glow));
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.living-ftr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 8px;
  margin-top: 6px;
}

/* Mini Player Bar */
.app-mini-player {
  background: #0B0F19;
  border: 1px solid #1E293B;
  border-radius: 12px;
  padding: 12px 18px;
  margin-top: 16px;
}

.mini-player-seekbar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.time-readout {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  min-width: 32px;
}

.track-seek {
  flex: 1;
}

.mini-player-controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.player-buttons {
  display: flex;
  align-items: center;
  gap: 10px;
}

.transport-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}

.transport-btn:hover {
  color: #FFFFFF;
}

.play-glow-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-bright) 0%, #D97706 100%);
  border: none;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 16px var(--gold-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.play-glow-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 22px var(--gold-glow);
}

.now-playing-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 20px;
  padding: 5px 14px;
}

.sc-logo-icon {
  color: #FF5500;
  display: flex;
  align-items: center;
}

.status-state {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: #FF5500;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.track-name {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  color: #FFFFFF;
}

.artist-sub {
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 4px;
}

/* DSP Quick Bar & Presets */
.app-dsp-quickbar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.quick-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 8px;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.app-presets-row {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 12px;
  padding: 10px 16px;
  margin-bottom: 16px;
  overflow-x: auto;
}

.presets-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-bright);
  font-weight: 800;
  white-space: nowrap;
}

.presets-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
}

.preset-btn {
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.preset-btn:hover {
  border-color: var(--border-highlight);
  color: #FFFFFF;
}

.preset-btn.active {
  background: var(--gold-dim);
  border-color: var(--gold-glow);
  color: var(--gold-bright);
  font-weight: 800;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.25);
}

/* 32-Band Touch Matrix Card */
.app-matrix-card {
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 20px;
}

.matrix-hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 12px;
}

.matrix-more {
  color: var(--text-muted);
  cursor: pointer;
}

.eq-canvas-container {
  position: relative;
  width: 100%;
  height: 280px;
  background: radial-gradient(circle at 50% 50%, #151D2A 0%, #080C14 100%);
  border-radius: 12px;
  border: 1px solid #1E293B;
  overflow: hidden;
}

#eqCanvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}

.canvas-overlay-hints {
  position: absolute;
  top: 10px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  pointer-events: none;
  background: rgba(11, 15, 25, 0.7);
  padding: 3px 8px;
  border-radius: 4px;
}

/* ==========================================================================
   Module 2: Lossless Vinyl Turntable Player Styles
   ========================================================================== */
.turntable-frame {
  background: #0A0D16;
}

.tt-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1E293B;
  padding-bottom: 14px;
  margin-bottom: 20px;
}

.tt-status-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tt-back-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #141C2E;
  border: 1px solid #1E293B;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-family: monospace;
  font-weight: bold;
  cursor: pointer;
}

.tt-headline {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 800;
  color: #FFFFFF;
}

.tt-subline {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.tt-sc-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 85, 0, 0.12);
  border: 1px solid rgba(255, 85, 0, 0.4);
  color: #FF5500;
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 800;
}

.tt-platter-card {
  background: #0D121F;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 24px;
}

.tt-card-hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.amber-led {
  color: #F59E0B;
  margin-right: 4px;
}

.turntable-visual-stage {
  position: relative;
  height: 320px;
  background: radial-gradient(circle at center, #151C2C 0%, #060911 100%);
  border-radius: 14px;
  border: 1px solid #1E293B;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 20px;
}

.vinyl-record-assembly {
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, #222226 0%, #0E0E10 40%, #161619 70%, #08080A 100%);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.9), inset 0 0 0 2px #26262B;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vinyl-record-assembly.spinning {
  animation: spinDisc 3.5s linear infinite;
}

@keyframes spinDisc {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.vinyl-groove-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.vinyl-groove-ring.ring-1 { width: 210px; height: 210px; }
.vinyl-groove-ring.ring-2 { width: 170px; height: 170px; }
.vinyl-groove-ring.ring-3 { width: 130px; height: 130px; }

.vinyl-label-center {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF5500 0%, #993300 100%);
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.8), inset 0 0 0 3px #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 800;
  text-align: center;
}

.vinyl-label-center svg {
  margin-bottom: 2px;
}

.tonearm-assembly {
  position: absolute;
  top: 24px;
  right: 50px;
  pointer-events: none;
}

.tonearm-base {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle, #64748B 0%, #1E293B 100%);
  border: 2px solid #475569;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
}

.tonearm-wand {
  width: 4px;
  height: 140px;
  background: linear-gradient(to bottom, #94A3B8, #475569);
  position: absolute;
  top: 20px;
  left: 14px;
  transform-origin: top center;
  transform: rotate(26deg);
  border-radius: 2px;
}

.tonearm-headshell {
  position: absolute;
  top: 146px;
  left: -46px;
  width: 14px;
  height: 24px;
  background: #0F172A;
  border: 1px solid #64748B;
  border-radius: 3px;
  transform: rotate(26deg);
}

.cartridge-stylus-glow {
  position: absolute;
  bottom: -2px;
  left: 5px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold-bright);
  box-shadow: 0 0 8px var(--gold-glow);
}

.tt-track-meta {
  text-align: center;
  margin-bottom: 14px;
}

.tt-track-title {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFFFFF;
}

.tt-track-artist {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.tt-telemetry-chips {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tele-chip {
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 14px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: #94A3B8;
}

.tele-chip.orange-sc {
  color: #FF5500;
  border-color: rgba(255, 85, 0, 0.3);
}

.tt-seekbar-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.tt-controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 18px;
}

.tt-aux-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: color 0.2s ease;
}

.tt-aux-btn:hover {
  color: #FFFFFF;
}

.tt-large-play-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-bright) 0%, #D97706 100%);
  border: none;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 24px var(--gold-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tt-large-play-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 0 32px var(--gold-glow);
}

.tt-volume-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
}

/* ==========================================================================
   Module 3: 3D Spatial Stage Pro Styles
   ========================================================================== */
.spatial-frame {
  background: #0A0D16;
}

.spatial-hdr-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1E293B;
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.sp-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sp-badge-title {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 800;
  color: #FFFFFF;
}

.sp-mode-toggle {
  display: flex;
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 20px;
  padding: 2px;
}

.sp-mode-btn {
  background: transparent;
  border: none;
  border-radius: 18px;
  padding: 5px 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  cursor: pointer;
  font-weight: 700;
  transition: all 0.2s ease;
}

.sp-mode-btn.active {
  background: var(--gold-dim);
  color: var(--gold-bright);
}

.sp-vis-glyph {
  font-family: var(--font-mono);
  color: var(--gold-bright);
  font-weight: bold;
}

.sp-active-preset-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #0D121F;
  border: 1px solid #1E293B;
  border-radius: 10px;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.sp-presets-btn {
  background: transparent;
  border: none;
  color: var(--gold-bright);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.sp-subtabs-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.sp-subtab {
  background: #0D121F;
  border: 1px solid #1E293B;
  border-radius: 8px;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sp-subtab.active {
  border-color: var(--gold-glow);
  color: var(--gold-bright);
  background: var(--gold-dim);
}

/* Radar Field */
.sp-radar-card {
  background: #0D121F;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 20px;
}

.sp-card-status {
  display: flex;
  justify-content: space-between;
  margin-bottom: 14px;
}

.sp-pill {
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 12px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.sp-pill.matched {
  color: #38BDF8;
  border-color: rgba(56, 189, 248, 0.4);
}

.sp-radar-visual {
  position: relative;
  height: 220px;
  background: radial-gradient(circle at center, #151D2C 0%, #060911 100%);
  border-radius: 14px;
  border: 1px solid #1E293B;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 16px;
}

.radar-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(56, 189, 248, 0.25);
  pointer-events: none;
}

.radar-circle.r-1 { width: 80px; height: 80px; }
.radar-circle.r-2 { width: 140px; height: 140px; }
.radar-circle.r-3 { width: 200px; height: 200px; }

.radar-crosshair-x {
  position: absolute;
  width: 100%;
  height: 1px;
  background: rgba(56, 189, 248, 0.15);
  pointer-events: none;
}

.radar-crosshair-y {
  position: absolute;
  height: 100%;
  width: 1px;
  background: rgba(56, 189, 248, 0.15);
  pointer-events: none;
}

.sp-wave-svg {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.sp-wave-path {
  fill: none;
  stroke: #38BDF8;
  stroke-width: 3;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
}

.sp-focus-slider-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.focus-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-bright);
  white-space: nowrap;
}

.sp-bands-selector {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #1E293B;
  padding-top: 12px;
}

.bands-hdr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 700;
}

.bands-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.band-chip {
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.band-chip:hover {
  border-color: var(--gold-glow);
  color: #FFFFFF;
}

.band-chip.active {
  background: var(--gold-dim);
  border-color: var(--gold-glow);
  color: var(--gold-bright);
  font-weight: 800;
}

/* Room Tuning Card */
.room-tuning-card {
  background: #0D121F;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 20px;
}

.rt-hdr {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.rt-title-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rt-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #141C2E;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.rt-title {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
}

.rt-desc {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.rt-graph-container {
  background: #060911;
  border: 1px solid #1E293B;
  border-radius: 12px;
  padding: 14px;
}

.rt-legends {
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.leg-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
}

.leg-color {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.leg-color.gold { background: #F59E0B; }
.leg-color.blue { background: #38BDF8; }

.rt-oscilloscope-svg {
  width: 100%;
  height: 120px;
}

.rt-room-mode-curve {
  fill: none;
  stroke: #F59E0B;
  stroke-width: 2.5;
  stroke-dasharray: 4 2;
}

.rt-corrected-curve {
  fill: none;
  stroke: #38BDF8;
  stroke-width: 3;
  filter: drop-shadow(0 0 6px rgba(56, 189, 248, 0.6));
}

.rt-readouts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 14px;
  border-top: 1px solid #1E293B;
  padding-top: 12px;
}

.rt-readout {
  display: flex;
  flex-direction: column;
}

.rt-readout .lbl {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 700;
}

.rt-readout .val {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  margin-top: 2px;
}

.rt-readout .val.blue { color: #38BDF8; }
.rt-readout .val.green { color: #10B981; }

/* ==========================================================================
   Module 4: Master DSP Settings Styles
   ========================================================================== */
.settings-frame {
  background: #0A0D16;
}

.st-header {
  border-bottom: 1px solid #1E293B;
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.st-main-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 800;
  color: #FFFFFF;
}

.st-sub-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.st-status-banner {
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 20px;
}

.st-online-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #FFFFFF;
  font-weight: 700;
  margin-bottom: 12px;
}

.green-dot {
  color: #10B981;
  margin-right: 6px;
}

.latency-badge {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid #10B981;
  color: #10B981;
  border-radius: 12px;
  padding: 2px 10px;
  font-size: 0.7rem;
}

.st-tele-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.tele-box {
  background: #060911;
  border: 1px solid #1E293B;
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
}

.t-lbl {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 700;
}

.t-val {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #FFFFFF;
  font-weight: 800;
  margin-top: 2px;
}

.t-val.green {
  color: #10B981;
}

.st-controls-card {
  background: #0E1422;
  border: 1px solid #1E293B;
  border-radius: 16px;
  padding: 20px;
}

.st-card-sec-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-bright);
  font-weight: 800;
  margin-bottom: 16px;
}

.st-control-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 14px;
  margin-bottom: 14px;
}

.st-control-item:last-child {
  border-bottom: none;
}

.st-control-item.switch-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.st-item-hdr {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.st-item-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.st-slider-hdr {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.st-val {
  font-family: var(--font-mono);
  color: var(--gold-bright);
  font-weight: 700;
}

.st-reset-btn {
  width: 100%;
  background: #141C2E;
  border: 1px solid #1E293B;
  border-radius: 10px;
  padding: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: 8px;
  transition: all 0.2s ease;
}

.st-reset-btn:hover {
  background: #1E293B;
  border-color: #EF4444;
  color: #EF4444;
}

/* Responsive adjustment for suite tabs */
@media (max-width: 900px) {
  .suite-tabs-nav {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .suite-tabs-nav {
    grid-template-columns: 1fr;
  }
}

/* Feature Grid 3-Column */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin: 80px 0;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--gold-glow);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

.feature-icon-badge {
  width: 48px;
  height: 48px;
  background: var(--gold-dim);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Deep Dive Screenshots Showcase Section */
.deep-dive-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.deep-dive-row {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 90px;
}

.deep-dive-row.reverse {
  flex-direction: row-reverse;
}

.deep-dive-text {
  flex: 1;
}

.deep-dive-text .tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-bright);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  display: block;
}

.deep-dive-text h3 {
  font-size: 2.2rem;
  line-height: 1.2;
  margin-bottom: 16px;
  font-weight: 800;
}

.deep-dive-text p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-bullets li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.feature-bullets li::before {
  content: "✓";
  color: var(--gold-bright);
  font-weight: 900;
}

.deep-dive-visual {
  flex: 1;
  text-align: center;
}

.deep-dive-visual img {
  max-width: 380px;
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  transition: transform 0.4s ease;
}

.deep-dive-visual img:hover {
  transform: scale(1.02);
}

/* Specs Table Section */
.specs-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.specs-table-wrap {
  overflow-x: auto;
  margin-top: 40px;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.specs-table th, .specs-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.specs-table th {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  background: var(--bg-card);
}

.specs-table td {
  font-size: 0.95rem;
}

.specs-table td:nth-child(2) {
  color: var(--gold-bright);
  font-weight: 600;
  font-family: var(--font-mono);
}

.specs-table td:nth-child(3) {
  color: var(--text-muted);
}

/* Testimonials / Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 28px;
  font-style: italic;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-card p {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 20px;
}

.review-author {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--gold-bright);
  font-family: var(--font-mono);
}

/* FAQ Section */
.faq-grid {
  max-width: 800px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: var(--border-highlight);
}

.faq-question {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 12px;
  line-height: 1.6;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 40px;
  margin-top: 100px;
  background: #06080B;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--gold-bright);
}

/* Responsive */
@media (max-width: 960px) {
  .hero h1 { font-size: 2.5rem; }
  .features-grid, .reviews-grid { grid-template-columns: 1fr; }
  .deep-dive-row, .deep-dive-row.reverse { flex-direction: column; text-align: center; }
  .hardware-knobs-grid { grid-template-columns: repeat(3, 1fr); }
  .specs-bar { flex-direction: column; gap: 12px; }
  .nav-links { display: none; }
}