:root {
  --bg-deep: #050810;
  --bg-panel: rgba(8, 16, 24, 0.72);
  --cyan: #00e5c0;
  --cyan-dim: rgba(0, 229, 192, 0.35);
  --cyan-glow: rgba(0, 229, 192, 0.55);
  --text-primary: #d8f5ef;
  --text-muted: rgba(216, 245, 239, 0.65);
  --border: rgba(0, 229, 192, 0.45);
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
  --frame-inset: clamp(1rem, 2.5vw, 2.5rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.4;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

::selection {
  background: rgba(0, 229, 192, 0.25);
  color: var(--text-primary);
}

/* App layout */

.app {
  position: relative;
  min-height: 100vh;
}

.bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 40%, rgba(0, 229, 192, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0, 100, 120, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 80% 20%, rgba(0, 80, 100, 0.06), transparent),
    var(--bg-deep);
}

.meteor-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.main {
  position: relative;
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr minmax(160px, 220px);
  gap: 1rem;
  align-items: center;
  min-height: calc(100vh - 80px);
  padding: 0 var(--frame-inset);
}

.left-rail,
.right-rail {
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 8vh, 6rem);
  z-index: 5;
}

.left-rail {
  align-self: stretch;
  justify-content: space-between;
  padding: clamp(2rem, 6vh, 4rem) 0 clamp(2rem, 8vh, 5rem);
}

.right-rail {
  align-self: stretch;
  justify-content: space-between;
  align-items: flex-end;
  padding: clamp(2rem, 6vh, 4rem) 0 clamp(2rem, 8vh, 5rem);
}

.center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}

.placeholder {
  height: 1px;
  scroll-margin-top: 2rem;
}

/* HUD frame */

.hud-frame {
  position: fixed;
  inset: var(--frame-inset);
  pointer-events: none;
  z-index: 100;
}

.hud-frame .edge {
  position: absolute;
  background: linear-gradient(
    90deg,
    transparent,
    var(--border) 20%,
    var(--cyan) 50%,
    var(--border) 80%,
    transparent
  );
  opacity: 0.7;
}

.hud-frame .edge[data-edge='top'],
.hud-frame .edge[data-edge='bottom'] {
  left: 60px;
  right: 60px;
  height: 1px;
}

.hud-frame .edge[data-edge='top'] {
  top: 0;
}

.hud-frame .edge[data-edge='bottom'] {
  bottom: 0;
}

.hud-frame .edge[data-edge='left'],
.hud-frame .edge[data-edge='right'] {
  top: 60px;
  bottom: 60px;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent,
    var(--border) 20%,
    var(--cyan) 50%,
    var(--border) 80%,
    transparent
  );
}

.hud-frame .edge[data-edge='left'] {
  left: 0;
}

.hud-frame .edge[data-edge='right'] {
  right: 0;
}

.hud-frame .corner {
  position: absolute;
  width: 48px;
  height: 48px;
  border: 1px solid var(--cyan);
  opacity: 0.85;
}

.hud-frame .corner[data-corner='tl'] {
  top: 0;
  left: 0;
  border-right: none;
  border-bottom: none;
}

.hud-frame .corner[data-corner='tr'] {
  top: 0;
  right: 0;
  border-left: none;
  border-bottom: none;
}

.hud-frame .corner[data-corner='bl'] {
  bottom: 0;
  left: 0;
  border-right: none;
  border-top: none;
}

.hud-frame .corner[data-corner='br'] {
  bottom: 0;
  right: 0;
  border-left: none;
  border-top: none;
}

.hud-frame .corner::after {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
}

.hud-frame .corner[data-corner='tl']::after {
  top: -3px;
  left: -3px;
}

.hud-frame .corner[data-corner='tr']::after {
  top: -3px;
  right: -3px;
}

.hud-frame .corner[data-corner='bl']::after {
  bottom: -3px;
  left: -3px;
}

.hud-frame .corner[data-corner='br']::after {
  bottom: -3px;
  right: -3px;
}

.hud-frame .tick {
  position: absolute;
  background: var(--cyan);
  opacity: 0.5;
}

.hud-frame .tick[data-tick='tl-h'],
.hud-frame .tick[data-tick='tr-h'],
.hud-frame .tick[data-tick='bl-h'],
.hud-frame .tick[data-tick='br-h'] {
  width: 24px;
  height: 1px;
}

.hud-frame .tick[data-tick='tl-v'],
.hud-frame .tick[data-tick='tr-v'],
.hud-frame .tick[data-tick='bl-v'],
.hud-frame .tick[data-tick='br-v'] {
  width: 1px;
  height: 24px;
}

.hud-frame .tick[data-tick='tl-h'] {
  top: 12px;
  left: 52px;
}

.hud-frame .tick[data-tick='tl-v'] {
  top: 52px;
  left: 12px;
}

.hud-frame .tick[data-tick='tr-h'] {
  top: 12px;
  right: 52px;
}

.hud-frame .tick[data-tick='tr-v'] {
  top: 52px;
  right: 12px;
}

.hud-frame .tick[data-tick='bl-h'] {
  bottom: 12px;
  left: 52px;
}

.hud-frame .tick[data-tick='bl-v'] {
  bottom: 52px;
  left: 12px;
}

.hud-frame .tick[data-tick='br-h'] {
  bottom: 12px;
  right: 52px;
}

.hud-frame .tick[data-tick='br-v'] {
  bottom: 52px;
  right: 12px;
}

.hud-frame .scanline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 229, 192, 0.015) 2px,
    rgba(0, 229, 192, 0.015) 4px
  );
  opacity: 0.4;
}

/* Header */

.header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: calc(var(--frame-inset) + 0.5rem) calc(var(--frame-inset) + 1rem) 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(0.75rem, 1.5vw, 0.95rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-shadow: 0 0 20px var(--cyan-dim);
  transition: opacity 0.2s;
}

.brand:hover {
  opacity: 0.85;
}

.logo {
  width: 28px;
  height: 28px;
  color: var(--cyan);
  filter: drop-shadow(0 0 6px var(--cyan-glow));
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.nav-link {
  font-family: var(--font-display);
  font-size: clamp(0.6rem, 1.1vw, 0.75rem);
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  transition: color 0.2s, text-shadow 0.2s;
}

.nav-link:hover {
  color: var(--cyan);
  text-shadow: 0 0 12px var(--cyan-dim);
}

/* HUD panels */

.hud-panel {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  box-shadow:
    0 0 20px rgba(0, 229, 192, 0.05),
    inset 0 0 30px rgba(0, 229, 192, 0.03);
}

.hud-panel::before,
.hud-panel::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  opacity: 0.6;
}

.hud-panel::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}

.hud-panel::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.hud-panel__label {
  padding: 0.5rem 0.75rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--cyan);
  border-bottom: 1px solid rgba(0, 229, 192, 0.15);
  text-shadow: 0 0 10px var(--cyan-dim);
}

.hud-panel__body {
  padding: 0.75rem;
}

.status-panel {
  min-width: 140px;
}

.status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow:
    0 0 8px var(--cyan-glow),
    0 0 16px var(--cyan-dim);
  animation: pulse 2s ease-in-out infinite;
}

.status-text {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--text-primary);
}

.system-panel {
  min-width: 180px;
}

.stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.stat-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.bar-track {
  height: 4px;
  background: rgba(0, 229, 192, 0.12);
  border: 1px solid rgba(0, 229, 192, 0.2);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, rgba(0, 229, 192, 0.5), var(--cyan));
  box-shadow: 0 0 8px var(--cyan-glow);
  transition: width 1.2s ease-out;
}

.location-panel {
  min-width: 160px;
}

.topo-map {
  width: 100%;
  height: auto;
  margin-bottom: 0.5rem;
  opacity: 0.85;
}

.location {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--text-primary);
}

.location-weather {
  color: var(--cyan);
  font-weight: 600;
  text-shadow: 0 0 10px var(--cyan-dim);
}

.location-weather--error {
  color: var(--text-muted);
  font-weight: 500;
  text-shadow: none;
}

.connect-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.75rem;
}

.connect-panel {
  min-width: 160px;
}

.social-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.25rem 0;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 192, 0.3);
  transition:
    background 0.2s,
    box-shadow 0.2s,
    color 0.2s;
}

.social-link svg {
  width: 18px;
  height: 18px;
}

.social-link:hover {
  background: rgba(0, 229, 192, 0.1);
  box-shadow: 0 0 16px var(--cyan-dim);
}

.copyright {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.55rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

/* Hero */

.hero {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 120px);
  padding: 1rem var(--frame-inset) 5rem;
  text-align: center;
}

.hero-content {
  position: relative;
  z-index: 2;
  margin-bottom: -2rem;
}

.hero-welcome {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(0.65rem, 1.2vw, 0.8rem);
  font-weight: 500;
  letter-spacing: 0.35em;
  color: var(--cyan);
  text-shadow: 0 0 16px var(--cyan-dim);
}

.hero-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 0.12em;
  line-height: 1.05;
  color: var(--cyan);
  text-shadow:
    0 0 30px var(--cyan-glow),
    0 0 60px rgba(0, 229, 192, 0.2);
}

.hero-tagline {
  margin: 0;
  max-width: 42rem;
  font-family: var(--font-body);
  font-size: clamp(0.85rem, 1.8vw, 1.1rem);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  opacity: 0.9;
}

.scene-wrap {
  position: relative;
  width: min(420px, 80vw);
  height: min(420px, 45vh);
  animation: float 8s ease-in-out infinite;
}

.cube-scene {
  width: 100%;
  height: 100%;
}

.cube-scene canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* Scroll indicator */

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  color: var(--text-muted);
  transition: color 0.2s;
  animation: bob 2.5s ease-in-out infinite;
}

.scroll-indicator:hover {
  color: var(--cyan);
}

.scroll-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.25rem;
  color: var(--cyan);
  opacity: 0.7;
}

.scroll-icon svg {
  width: 100%;
  height: 100%;
}

.scroll-label,
.scroll-sub {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.25em;
}

.scroll-arrow {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: var(--cyan);
  opacity: 0.6;
}

/* Animations */

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(0.9);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes bob {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(6px);
  }
}

/* Responsive */

@media (max-width: 1024px) {
  .main {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    min-height: auto;
    padding-bottom: 2rem;
  }

  .left-rail,
  .right-rail {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 1rem;
    padding: 0;
  }

  .right-rail {
    align-items: center;
  }

  .center {
    order: -1;
  }
}

@media (max-width: 768px) {
  .hud-frame {
    inset: 0.75rem;
  }

  .hud-frame .edge[data-edge='top'],
  .hud-frame .edge[data-edge='bottom'] {
    left: 32px;
    right: 32px;
  }

  .hud-frame .edge[data-edge='left'],
  .hud-frame .edge[data-edge='right'] {
    top: 32px;
    bottom: 32px;
  }

  .hud-frame .corner {
    width: 28px;
    height: 28px;
  }

  .hero {
    min-height: auto;
    padding-top: 2rem;
    padding-bottom: 6rem;
  }

  .hero-content {
    margin-bottom: 0;
  }
}

@media (max-width: 640px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .nav {
    flex-wrap: wrap;
    gap: 0.75rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .left-rail,
  .right-rail {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Spotify section */

.spotify-section {
  position: relative;
  z-index: 5;
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem var(--frame-inset) 6rem;
  scroll-margin-top: 2rem;
}

.spotify-section__header {
  text-align: center;
  margin-bottom: 2rem;
}

.spotify-section__eyebrow {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.35em;
  color: var(--cyan);
}

.spotify-section__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--text-primary);
}

.spotify-status {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.spotify-status--ok {
  color: var(--cyan);
}

.spotify-status--error {
  color: #ff8a8a;
}

.spotify-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.spotify-range {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.spotify-btn--primary {
  color: var(--bg-deep);
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--cyan-dim);
  animation: pulse-glow 2.5s ease-in-out infinite;
}

.spotify-btn--primary:hover {
  color: var(--bg-deep);
  box-shadow: 0 0 28px var(--cyan-glow);
}

@keyframes pulse-glow {
  0%,
  100% {
    box-shadow: 0 0 16px var(--cyan-dim);
  }
  50% {
    box-shadow: 0 0 28px var(--cyan-glow);
  }
}

.spotify-range__btn,
.spotify-btn {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(0, 229, 192, 0.35);
  background: rgba(0, 229, 192, 0.06);
  color: var(--text-muted);
  cursor: pointer;
  transition:
    color 0.2s,
    border-color 0.2s,
    box-shadow 0.2s,
    background 0.2s;
}

.spotify-range__btn:hover,
.spotify-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.spotify-range__btn.is-active {
  color: var(--cyan);
  background: rgba(0, 229, 192, 0.12);
  box-shadow: 0 0 16px var(--cyan-dim);
}

.spotify-btn--ghost {
  background: transparent;
}

#spotify-disconnect {
  display: none;
}

.spotify-auth {
  display: flex;
  gap: 0.5rem;
}

.spotify-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.spotify-panel {
  min-width: 0;
}

.spotify-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 120px;
}

.spotify-section--loading .spotify-list {
  opacity: 0.45;
}

.spotify-item {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 0.65rem;
  padding: 0.35rem;
  border: 1px solid transparent;
  transition:
    border-color 0.2s,
    background 0.2s;
}

.spotify-item:hover {
  border-color: rgba(0, 229, 192, 0.25);
  background: rgba(0, 229, 192, 0.05);
}

.spotify-item__rank {
  width: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  opacity: 0.8;
}

.spotify-item__img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border: 1px solid rgba(0, 229, 192, 0.2);
}

.spotify-item__img--placeholder {
  background: rgba(0, 229, 192, 0.08);
}

.spotify-item__meta {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.spotify-item__title,
.spotify-item__subtitle {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spotify-item__title {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.spotify-item__subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.spotify-empty {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Callback page */

.callback-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
}

.callback-card {
  padding: 2rem;
  border: 1px solid var(--border);
  background: var(--bg-panel);
}

.callback-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .spotify-grid {
    grid-template-columns: 1fr;
  }

  .spotify-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .spotify-range,
  .spotify-auth {
    justify-content: center;
  }
}