/* 
 * MAIN.CSS - Pixel Engineer Portfolio
 * Author: Harshit Verma
 * Theme: Editorial layout with pixel art / 8-bit retro game aesthetic
 */

/* ==========================================================================
   Design Tokens (CSS Custom Properties on :root)
   ========================================================================== */
:root {
  --bg: #FAFAF8;
  --bg-alt: #F0EDE6;
  --bg-card: #FFFFFF;
  --text: #1A1A1A;
  --text-secondary: #666666;
  --text-muted: #999999;
  --accent-1: #FF6B35;  /* warm orange */
  --accent-2: #4ECDC4;  /* teal */
  --accent-3: #FFE66D;  /* yellow */
  --accent-4: #95E1D3;  /* soft green */
  --accent-5: #C490E4;  /* purple */
  --pixel-black: #2D2D2D;
  --border: #E0DDD6;
  --font-pixel: 'Press Start 2P', monospace;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'Space Mono', 'JetBrains Mono', monospace;
  --radius: 4px;  /* deliberately small/square for pixel feel */
  --transition: 0.25s ease;
}

/* ==========================================================================
   1. Global Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-1);
  color: #FFFFFF;
}

/* Smooth scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
  border-left: 1px solid var(--border);
}

::-webkit-scrollbar-thumb {
  background: var(--pixel-black);
  border-radius: var(--radius);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-1);
}

a {
  color: inherit;
  text-decoration: none;
}

img, picture, svg, video {
  max-width: 100%;
  display: block;
}

/* ==========================================================================
   2. Typography
   ========================================================================== */
.pixel-text {
  font-family: var(--font-pixel);
  letter-spacing: 1px;
}

.mono {
  font-family: var(--font-mono);
}

h1, .h1 {
  font-family: var(--font-pixel);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.2;
  color: var(--text);
  text-transform: uppercase;
  margin: 0;
}

h2, .h2 {
  font-family: var(--font-pixel);
  font-size: clamp(0.75rem, 2vw, 1rem);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin: 0;
}

h3, .h3 {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.section-number {
  display: block;
  font-family: var(--font-pixel);
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  margin-bottom: 40px;
}

/* ==========================================================================
   3. Layout
   ========================================================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section--alt {
  background: var(--bg-alt);
}

/* ==========================================================================
   4. Header
   ========================================================================== */
#header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 2px solid var(--pixel-black);
  padding: 16px 0;
  transition: box-shadow 0.25s ease;
}

#header.is-scrolled {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.header__name {
  font-family: var(--font-pixel);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  color: var(--text);
  text-decoration: none;
  display: inline-block;
}

.header__name span {
  color: var(--accent-1);
}

.header__nav {
  display: flex;
  gap: 24px;
  align-items: baseline;
}

.header__link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  transition: color var(--transition);
  position: relative;
}

.header__link:hover {
  color: var(--text);
}

.header__link--active {
  color: var(--accent-1);
}

.header__link::before {
  content: '(';
}

.header__link::after {
  content: ')';
}

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

.header__bgm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-card);
  border: 2px solid var(--pixel-black);
  box-shadow: 2px 2px 0 var(--pixel-black);
  padding: 6px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--text);
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.15s ease;
  user-select: none;
}

.header__bgm:hover {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--pixel-black);
  background: var(--bg-alt);
}

.header__bgm.is-playing {
  background: var(--accent-3);
  color: var(--pixel-black);
}

.header__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  padding: 4px;
  z-index: 110;
}

.header__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--pixel-black);
  transition: transform var(--transition), opacity var(--transition);
}

/* ==========================================================================
   5. Hero Section
   ========================================================================== */
#hero {
  padding: 80px 0 60px;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero__subtitle {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0;
}

.hero__subtitle::before {
  content: '▸ ';
  color: var(--accent-1);
}

.hero__cursor {
  display: inline-block;
  width: 10px;
  height: 18px;
  background: var(--accent-1);
  animation: blink 1s step-end infinite;
  vertical-align: middle;
  margin-left: 4px;
}

.hero__avatar {
  width: 200px;
  height: 200px;
  border-radius: var(--radius);
  border: 3px solid var(--pixel-black);
  box-shadow: 6px 6px 0 var(--pixel-black);
  image-rendering: pixelated;
  object-fit: cover;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.hero__badge {
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  padding: 6px 12px;
  border: 2px solid var(--pixel-black);
  background: var(--accent-3);
  color: var(--pixel-black);
  text-transform: uppercase;
  box-shadow: 3px 3px 0 var(--pixel-black);
}

.hero__badge--teal {
  background: var(--accent-2);
}

.hero__badge--orange {
  background: var(--accent-1);
  color: #FFFFFF;
}

.hero__badge--green {
  background: var(--accent-4);
}

/* ==========================================================================
   6. Section Separator
   ========================================================================== */
.pixel-separator {
  text-align: center;
  padding: 20px 0;
  font-size: 1.5rem;
  letter-spacing: 16px;
  color: var(--accent-1);
  user-select: none;
}

/* ==========================================================================
   7. Projects Section
   ========================================================================== */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.project-card {
  background: var(--bg-card);
  border: 2px solid var(--pixel-black);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 4px 4px 0 var(--pixel-black);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--pixel-black);
}

.project-card__header {
  padding: 24px;
  background: var(--accent-1);
  color: #FFFFFF;
  border-bottom: 2px solid var(--pixel-black);
}

.project-card__header--teal {
  background: var(--accent-2);
  color: var(--pixel-black);
}

.project-card__header--yellow {
  background: var(--accent-3);
  color: var(--pixel-black);
}

.project-card__header--purple {
  background: var(--accent-5);
  color: #FFFFFF;
}

.project-card__title {
  font-family: var(--font-pixel);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 4px;
}

.project-card__subtitle {
  font-family: var(--font-body);
  font-size: 0.85rem;
  opacity: 0.8;
  font-style: italic;
  margin: 0;
}

.project-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.project-card__badge {
  font-family: var(--font-pixel);
  font-size: 0.45rem;
  padding: 4px 8px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: var(--radius);
}

.project-card__description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 16px;
  flex: 1;
}

.project-card__description ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.project-card__description li {
  margin-bottom: 8px;
  padding-left: 16px;
  position: relative;
}

.project-card__description li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-1);
}

.project-card__links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border);
  padding-bottom: 2px;
  transition: color var(--transition), border-color var(--transition);
}

.project-card__link:hover {
  color: var(--accent-1);
  border-color: var(--accent-1);
}

.view-more {
  display: inline-block;
  margin-top: 32px;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), border-color var(--transition);
}

.view-more:hover {
  color: var(--text);
  border-color: var(--text);
}

.view-more::after {
  content: ' ↗';
}

/* ==========================================================================
   8. Terminal Block (inside project cards)
   ========================================================================== */
.terminal {
  background: #1A1A2E;
  border: 2px solid var(--pixel-black);
  border-radius: var(--radius);
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  overflow: hidden;
  box-shadow: 3px 3px 0 var(--pixel-black);
}

.terminal__header {
  background: #16213E;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid var(--pixel-black);
}

.terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 0; /* square dots for pixel feel */
  background: #E0E0E0;
}

.terminal__dot:nth-child(1) { background: #FF5F56; }
.terminal__dot:nth-child(2) { background: #FFBD2E; }
.terminal__dot:nth-child(3) { background: #27C93F; }

.terminal__title {
  font-size: 0.65rem;
  color: #666;
  margin-left: auto;
  font-family: var(--font-pixel);
  text-transform: uppercase;
}

.terminal__body {
  padding: 16px;
  line-height: 1.8;
  color: #E0E0E0;
}

.terminal__prompt {
  color: var(--accent-2); /* teal prompt */
}

.terminal__comment {
  color: #666;
  font-style: italic;
}

.terminal__output {
  color: var(--accent-3); /* yellow output */
}

.terminal__highlight {
  color: var(--accent-1); /* orange highlights */
}

.terminal__line {
  display: block;
}

/* ==========================================================================
   9. Skills Section
   ========================================================================== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.skill-category {
  background: var(--bg-card);
  border: 2px solid var(--pixel-black);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 4px 4px 0 var(--pixel-black);
}

.skill-category__title {
  font-family: var(--font-pixel);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px dashed var(--border);
}

.skill-category__title::before {
  content: '⚔ ';
}

.skill-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.skill-bar:last-child {
  margin-bottom: 0;
}

.skill-bar__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  min-width: 120px;
  color: var(--text);
}

.skill-bar__track {
  flex: 1;
  display: flex;
  gap: 3px;
  height: 16px;
}

.skill-bar__block {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  transition: background 0.3s ease, transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.skill-bar__block.filled {
  background: var(--accent-2);
  border-color: #3BA89F;
}

.skill-bar__block.filled--orange {
  background: var(--accent-1);
  border-color: #E55A2B;
}

.skill-bar__block--animate {
  transform: scale(1.15);
}

.skill-bar__block--animate:hover {
  transform: scale(1.3);
}

.skill-bar__level {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  min-width: 40px;
  text-align: right;
  color: var(--text-secondary);
}

/* ==========================================================================
   10. Experience Section
   ========================================================================== */
.quest-log {
  border: 2px solid var(--pixel-black);
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 var(--pixel-black);
  overflow: hidden;
}

.quest-log__header {
  background: var(--accent-3);
  padding: 16px 24px;
  border-bottom: 2px solid var(--pixel-black);
  font-family: var(--font-pixel);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0;
}

.quest-log__body {
  padding: 0;
}

.quest-entry {
  padding: 24px;
  border-bottom: 1px dashed var(--border);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
}

.quest-entry:last-child {
  border-bottom: none;
}

.quest-entry__status {
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--accent-2);
  writing-mode: horizontal-tb;
  white-space: nowrap;
  padding-top: 4px;
}

.quest-entry__content h3 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 4px;
  color: var(--text);
}

.quest-entry__content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

.quest-entry__org {
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 12px;
}

.quest-entry__achievements {
  list-style: none;
  padding: 0;
  margin: 12px 0 0 0;
}

.quest-entry__achievements li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.quest-entry__achievements li::before {
  content: '★';
  position: absolute;
  left: 0;
  color: var(--accent-1);
}

/* ==========================================================================
   11. About Section
   ========================================================================== */
.about__grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  align-items: start;
}

.about__avatar {
  width: 180px;
  height: 180px;
  border: 3px solid var(--pixel-black);
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 var(--pixel-black);
  image-rendering: pixelated;
  object-fit: cover;
}

.about__text p {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 0;
  margin-bottom: 16px;
  line-height: 1.8;
}

.about__stats {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 2px dashed var(--border);
}

.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-pixel);
  font-size: 1.5rem;
  color: var(--accent-1);
  display: block;
}

.stat__label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   12. Marquee
   ========================================================================== */
.marquee {
  background: var(--pixel-black);
  padding: 20px 0;
  overflow: hidden;
  white-space: nowrap;
  border-top: 3px solid var(--pixel-black);
  border-bottom: 3px solid var(--pixel-black);
}

.marquee__track {
  display: flex;
  animation: marquee-scroll 20s linear infinite;
}

.marquee__text {
  font-family: var(--font-pixel);
  font-size: clamp(1.5rem, 4vw, 3rem);
  color: var(--bg);
  text-transform: uppercase;
  padding-right: 60px;
  flex-shrink: 0;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

/* ==========================================================================
   13. Footer
   ========================================================================== */
#footer {
  padding: 60px 0 40px;
  border-top: 2px solid var(--pixel-black);
  background: var(--bg-alt);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer__col-title {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-muted);
  margin: 0 0 16px;
}

.footer__link {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  transition: color var(--transition);
  font-style: italic;
  width: fit-content;
}

.footer__link:hover {
  color: var(--accent-1);
}

.footer__link::before {
  content: '(';
}

.footer__link::after {
  content: ')';
}

.footer__social {
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 4px;
}

.footer__social::before,
.footer__social::after {
  content: '';
}

.footer__social:hover {
  text-decoration-style: solid;
}

.footer__bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px dashed var(--border);
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ==========================================================================
   14. Scroll Reveal
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================================================
   15. Keyframes
   ========================================================================== */
@keyframes blink {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

@keyframes marquee-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* ==========================================================================
   16. Responsive
   ========================================================================== */
@media (max-width: 768px) {
  .header__toggle {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 60px; /* Adjust based on header height */
    right: -100%;
    width: 100%;
    max-width: 300px;
    height: calc(100vh - 60px);
    background: var(--bg);
    border-left: 2px solid var(--pixel-black);
    flex-direction: column;
    padding: 32px 24px;
    gap: 32px;
    transition: right 0.3s ease;
    box-shadow: -4px 0 0 rgba(0,0,0,0.1);
  }

  .header__nav.is-open {
    right: 0;
  }

  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__text {
    align-items: center;
  }

  .hero__avatar {
    margin: 0 auto;
    order: -1;
  }

  .hero__badges {
    justify-content: center;
  }

  .projects__grid,
  .skills__grid {
    grid-template-columns: 1fr;
  }

  .quest-entry {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .quest-entry__status {
    writing-mode: horizontal-tb;
    padding-top: 0;
  }

  .about__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .about__avatar {
    margin: 0 auto;
  }

  .about__stats {
    justify-content: center;
    flex-wrap: wrap;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer__link {
    margin: 0 auto 8px;
  }

  .section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 40px 0;
  }
  
  .hero__avatar {
    width: 150px;
    height: 150px;
  }

  .about__avatar {
    width: 150px;
    height: 150px;
  }
}

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

  .hero__cursor {
    animation: none;
  }

  .marquee__track {
    animation: none;
    overflow-x: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   18. 8-Bit BGM Music Player Widget
   ========================================================================== */
.bgm-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
}

.bgm-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 2px solid var(--pixel-black);
  box-shadow: 4px 4px 0 var(--pixel-black);
  padding: 10px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-pixel);
  font-size: 0.62rem;
  color: var(--text);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.2s ease, border-color 0.2s ease;
  user-select: none;
}

.bgm-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--pixel-black);
  background: var(--bg-alt);
}

.bgm-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--pixel-black);
}

.bgm-btn.is-playing {
  border-color: var(--accent-1);
  background: #FFF8F5;
  box-shadow: 4px 4px 0 var(--accent-1);
}

.bgm-icon {
  font-size: 0.95rem;
  color: var(--accent-1);
  line-height: 1;
}

.bgm-btn.is-playing .bgm-icon {
  animation: pulse-music-icon 0.8s ease infinite alternate;
}

@keyframes pulse-music-icon {
  from { transform: scale(1); }
  to { transform: scale(1.3); }
}

.bgm-bars {
  display: inline-flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
  width: 14px;
}

.bgm-bars span {
  width: 2px;
  height: 3px;
  background: var(--pixel-black);
  transition: height 0.2s ease;
}

.bgm-btn.is-playing .bgm-bars span {
  background: var(--accent-1);
  animation: bgm-eq 0.6s ease infinite alternate;
}

.bgm-btn.is-playing .bgm-bars span:nth-child(1) { animation-delay: 0s; }
.bgm-btn.is-playing .bgm-bars span:nth-child(2) { animation-delay: 0.25s; }
.bgm-btn.is-playing .bgm-bars span:nth-child(3) { animation-delay: 0.15s; }
.bgm-btn.is-playing .bgm-bars span:nth-child(4) { animation-delay: 0.4s; }

@keyframes bgm-eq {
  0% { height: 2px; }
  50% { height: 12px; }
  100% { height: 4px; }
}

@media (max-width: 600px) {
  .bgm-widget {
    bottom: 16px;
    right: 16px;
  }
  .bgm-btn {
    padding: 8px 12px;
    font-size: 0.55rem;
    gap: 8px;
  }
}