:root {
  --bg-gradient: radial-gradient(circle at 50% 20%, #1a102f, #08070d 85%);
  --window-bg: rgba(18, 16, 28, 0.68);
  --window-border: rgba(255, 255, 255, 0.08);
  --accent-cyan: #00f0ff;
  --accent-pink: #ff2a85;
  --accent-glow: rgba(0, 240, 255, 0.25);
  --insta-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  --text-main: #f0f3f8;
  --text-muted: #8a8fa3;
  --display-bg: rgba(8, 7, 13, 0.75);
  --current-cover: none;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  background: var(--bg-gradient);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  color: var(--text-main);
  overflow-x: hidden;
}

/* --- Main Player Container --- */
.player-window {
  width: 100%;
  max-width: 400px;
  background: var(--window-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 18px;
  border: 1px solid var(--window-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 
              0 0 30px rgba(0, 240, 255, 0.05);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  isolation: isolate;
  z-index: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* Dynamic Ambient Background Blur */
.player-window::before {
  content: '';
  position: absolute;
  inset: -40px;
  background-image: var(--current-cover);
  background-size: cover;
  background-position: center;
  filter: blur(40px) saturate(220%) brightness(0.45);
  opacity: 0;
  transform: scale(1.1);
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.8s ease, transform 0.8s ease, filter 0.8s ease;
}

/* Vignette Depth Gradient */
.player-window::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 35%, rgba(8, 7, 13, 0.85) 100%);
  opacity: 0;
  z-index: -1;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

/* Playing State Glow & Background Effects */
.player-window.playing {
  border-color: rgba(0, 240, 255, 0.2);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8),
              0 0 45px rgba(0, 240, 255, 0.15),
              0 0 30px rgba(255, 42, 133, 0.1);
}

.player-window.playing::before {
  opacity: 0.85;
  animation: ambientArtworkPulse 7s infinite alternate ease-in-out;
}

.player-window.playing::after {
  opacity: 1;
}

@keyframes ambientArtworkPulse {
  0% {
    transform: scale(1.15) rotate(0deg);
    filter: blur(35px) saturate(200%) brightness(0.5);
  }
  50% {
    transform: scale(1.3) rotate(2deg);
    filter: blur(48px) saturate(250%) brightness(0.6);
  }
  100% {
    transform: scale(1.2) rotate(-1.5deg);
    filter: blur(38px) saturate(220%) brightness(0.45);
  }
}

/* --- Window Title Bar --- */
.title-bar {
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.title-text .icon {
  color: var(--accent-cyan);
  font-size: 10px;
  text-shadow: 0 0 8px var(--accent-cyan);
}

.window-controls button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  margin-left: 10px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.window-controls button:hover {
  color: var(--text-main);
}

.window-controls button.close-btn:hover {
  color: var(--accent-pink);
}

/* --- Premium Aesthetic Instagram Watermark Strip --- */
.watermark-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: linear-gradient(90deg, rgba(255, 42, 133, 0.06), rgba(0, 240, 255, 0.06));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
  overflow: hidden;
}

.watermark-strip::before {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
  transform: skewX(-25deg);
  animation: shineSweep 4s infinite ease-in-out;
}

.watermark-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 9px;
  font-weight: 700;
}

.watermark-label .creator-dot {
  width: 6px;
  height: 6px;
  background: #00f0ff;
  border-radius: 50%;
  box-shadow: 0 0 8px #00f0ff;
  animation: pulseDot 1.8s infinite ease-in-out;
}

.watermark-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #fff;
  text-decoration: none;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  backdrop-filter: blur(8px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.watermark-icon-box {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  background: var(--insta-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(220, 39, 67, 0.4);
}

.watermark-icon-box svg {
  width: 11px;
  height: 11px;
  fill: #ffffff;
}

.watermark-handle {
  background: linear-gradient(120deg, #ffffff, #00f0ff 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: all 0.3s ease;
}

.watermark-link:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 42, 133, 0.5);
  box-shadow: 0 0 16px rgba(255, 42, 133, 0.35), 0 0 8px rgba(0, 240, 255, 0.2);
  transform: translateY(-1.5px) scale(1.02);
}

.watermark-link:hover .watermark-handle {
  background: linear-gradient(120deg, #ff2a85, #00f0ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

@keyframes shineSweep {
  0% { left: -150%; }
  25%, 100% { left: 150%; }
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 12px #00f0ff; }
}

/* --- Menu Bar --- */
.menu-bar {
  display: flex;
  gap: 14px;
  font-size: 11px;
  font-weight: 500;
  background: rgba(0, 0, 0, 0.2);
  padding: 6px 16px;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.menu-bar span {
  cursor: pointer;
  transition: color 0.2s ease;
}

.menu-bar span:hover {
  color: var(--accent-cyan);
}

/* --- Player Core --- */
.player-body {
  padding: 16px;
}

.display-container {
  display: flex;
  gap: 14px;
  background: var(--display-bg);
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.6);
}

.cover-wrapper {
  width: 105px;
  height: 105px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.cover-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

/* Equalizer Visualizer */
.equalizer {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 105px;
  flex-grow: 1;
  padding: 4px 2px;
}

.equalizer span {
  flex: 1;
  background: linear-gradient(to top, var(--accent-cyan), var(--accent-pink));
  height: 4px;
  border-radius: 3px;
  opacity: 0.35;
  transition: height 0.15s ease, opacity 0.2s ease;
}

.equalizer.active span {
  opacity: 0.95;
  animation: bounce 0.6s infinite alternate ease-in-out;
  box-shadow: 0 0 10px var(--accent-glow);
}

.equalizer.active span:nth-child(2n) { animation-duration: 0.45s; }
.equalizer.active span:nth-child(3n) { animation-duration: 0.7s; }
.equalizer.active span:nth-child(4n) { animation-duration: 0.55s; }
.equalizer.active span:nth-child(5n) { animation-duration: 0.8s; }

@keyframes bounce {
  0% { height: 8px; }
  50% { height: 60px; }
  100% { height: 95px; }
}

/* --- Status Marquee Screen --- */
.status-box {
  background: #050408;
  border-radius: 8px;
  padding: 8px 12px;
  margin: 14px 0;
  border: 1px solid rgba(0, 240, 255, 0.15);
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.ticker {
  font-family: 'Courier New', Courier, monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-cyan);
  white-space: nowrap;
  letter-spacing: 0.5px;
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
}

/* --- Wavy Progress Scrubber & Sliders --- */
.scrubber-container {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-family: monospace;
  color: var(--text-muted);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 16px;
  background-color: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 10'%3E%3Cpath d='M0 5 Q 6 0, 12 5 T 24 5' fill='none' stroke='rgba(255, 255, 255, 0.18)' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: repeat-x;
  background-size: 20px 10px;
  background-position: center;
  outline: none;
  cursor: pointer;
  transition: filter 0.3s ease;
}

.scrubber-container input[type="range"] {
  flex-grow: 1;
}

/* Flowing Neon Wave on Active Playing */
.player-window.playing input[type="range"]#seek-bar {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 10'%3E%3Cpath d='M0 5 Q 6 0, 12 5 T 24 5' fill='none' stroke='%2300f0ff' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E");
  filter: drop-shadow(0 0 5px rgba(0, 240, 255, 0.6));
  animation: flowingWave 1.6s linear infinite;
}

@keyframes flowingWave {
  from { background-position: 0 center; }
  to { background-position: 20px center; }
}

/* Slider Thumb (Webkit) */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--accent-pink);
  box-shadow: 0 0 8px var(--accent-pink), 0 0 14px var(--accent-cyan);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.35);
  box-shadow: 0 0 12px var(--accent-pink), 0 0 20px var(--accent-cyan);
}

/* Slider Thumb (Firefox) */
input[type="range"]::-moz-range-track {
  height: 16px;
  background: transparent;
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--accent-pink);
  box-shadow: 0 0 8px var(--accent-pink), 0 0 14px var(--accent-cyan);
  cursor: pointer;
  transition: transform 0.15s ease;
}

/* --- Controls Grid --- */
.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  gap: 6px;
}

.controls button {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  min-width: 42px;
  height: 38px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.controls button:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
  transform: translateY(-1px);
}

.controls button:active {
  transform: scale(0.95);
}

#play-btn {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.2), rgba(255, 42, 133, 0.2));
  border-color: rgba(0, 240, 255, 0.3);
  min-width: 48px;
  font-size: 15px;
}

.volume-container {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.volume-container input[type="range"] {
  width: 55px;
}

/* --- Playlist Section --- */
.playlist-section {
  background: rgba(0, 0, 0, 0.35);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  max-height: 140px;
  overflow-y: auto;
}

.playlist-section::-webkit-scrollbar {
  width: 4px;
}
.playlist-section::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 4px;
}

.playlist-header {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.45);
}

.playlist-list {
  list-style: none;
}

.playlist-list li {
  padding: 9px 16px;
  font-size: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  transition: all 0.2s ease;
}

.playlist-list li:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  padding-left: 20px;
}

.playlist-list li.playing {
  color: var(--accent-cyan);
  font-weight: 600;
  background: rgba(0, 240, 255, 0.06);
  border-left: 3px solid var(--accent-cyan);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .player-window {
    max-width: 100%;
    border-radius: 14px;
  }

  .cover-wrapper {
    width: 90px;
    height: 90px;
  }

  .equalizer {
    height: 90px;
  }

  .controls button {
    min-width: 38px;
    height: 38px;
  }

  .volume-container input[type="range"] {
    width: 45px;
  }
}