/* Modern dark theme for Youtube Jukebox */
:root {
  --bg: #0f1720;              /* page background */
  --surface: #0b1220;         /* cards / panels */
  --muted: #9aa4b2;           /* muted text */
  --text: #e6eef6;            /* main text */
  --accent: #ff4d6d;          /* primary accent (play) */
  --accent-2: #6dd3ff;        /* secondary accent */
  --glass: rgba(255,255,255,0.03);
  --radius: 12px;
  --shadow: 0 6px 18px rgba(2,6,23,0.6);
  font-family: 'Noto Music', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

/* Page */
html,body{
  height:100%;
}
body{
  margin:0;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(109,211,255,0.04), transparent),
              radial-gradient(900px 400px at 90% 90%, rgba(255,77,109,0.03), transparent),
              var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

main{
  max-width:980px;
  margin:36px auto;
  padding:28px;
}

/* Card container to hold form + list */
main > *{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: var(--radius);
  padding:20px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,0.03);
}

/* Form */
#add_song{
  display:grid;
  grid-template-columns: 1fr 1fr auto;
  grid-template-rows: auto auto;
  gap:12px;
  align-items:center;
}

#add_song div{
  display:flex;
  flex-direction:column;
}

label{
  grid-row: 1;
  font-size:0.85rem;
  color:var(--muted);
  margin-bottom:6px;
}

input[type="text"]{
  background:var(--glass);
  border:1px solid rgba(255,255,255,0.04);
  color:var(--text);
  padding:10px 12px;
  border-radius:10px;
  outline:none;
  transition:box-shadow .15s, border-color .15s, transform .06s;
  grid-row: 2;
}

input[type="text"]::placeholder{ color: rgba(230,238,246,0.35); }

input[type="text"]:focus{
  border-color: rgba(109,211,255,0.22);
  box-shadow:0 4px 14px rgba(109,211,255,0.06);
  transform:translateY(-1px);
}

#add_song button[type="submit"]{
  background: linear-gradient(90deg,var(--accent), #da546f);
  color:white;
  border:none;
  padding: 8px 12px;
  border-radius:10px;
  cursor:pointer;
  font-weight:600;
  transition:transform .08s ease, box-shadow .08s ease, opacity .08s;
  grid-row: 2;
}

#add_song button[type="submit"]:hover{ transform:translateY(-2px); }
#add_song button[type="submit"]:active{ transform:translateY(0); opacity:0.95; }

/* Jukebox list */
#jukebox-list{
  list-style:none;
  margin:18px 0 0 0;
  padding:0;
  display:grid;
  gap:14px;
}

#jukebox-list li {
  position: relative;
  overflow: clip;
}

.waveform {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 50%;
  left: 0;
  z-index: 1;
  color: var(--muted);
  opacity: 0;
  transition: opacity .3s ease;
}

.playing .waveform {
  opacity: 0.15;
}

.waveform line:nth-child(7n) {
  animation: scale 1.0s infinite linear;
}
.waveform line:nth-child(7n + 1) {
  animation: scale 1.1s infinite linear;
}
.waveform line:nth-child(7n + 2) {
  animation: scale 1s infinite linear;
}
.waveform line:nth-child(7n + 3) {
  animation: scale 1.3s infinite linear;
}
.waveform line:nth-child(7n + 4) {
  animation: scale 1.4s infinite linear;
}
.waveform line:nth-child(7n + 5) {
  animation: scale 1.5s infinite linear;
}
.waveform line:nth-child(7n + 6) {
  animation: scale 1.6s infinite linear;
}

@keyframes scale {
  0% { transform: translate3d(0, 0px, 0); }
  25% { transform: translate3d(0, 2px, 0); }
  75% { transform: translate3d(0, -2px, 0); }
  100% { transform: translate3d(0, 0px, 0); }
}

#jukebox-list li .wrapper {
  display:grid;
  position: relative;
  z-index: 2;
  grid-template-columns: auto 1fr auto;
  gap:14px;
  align-items:center;
  background: linear-gradient(180deg, rgba(255,255,255,0.015), rgba(255,255,255,0.01));
  padding:14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.03);
}

/* Player area (YouTube iframe goes inside #player) */
#jukebox-list li .thumbnail{
  aspect-ratio: 16/9;
  grid-column: 1;
  grid-row: 1 / span 2;
}

#jukebox-list li button {
  grid-column: 3;
}

.player-wrapper{
  width:100%;
  aspect-ratio:16 / 9;
  background:#071018;
  border-radius:8px;
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
}

#jukebox-list li iframe{
  position: absolute;
  visibility: hidden;
}

/* Label + metadata */
#jukebox-list li .label{
  font-weight:700;
  color:var(--text);
  display:block;
  margin-bottom:8px;
  grid-column: 2;
  grid-row: 1;
}

/* Controls */
.controls{
  display:flex;
  gap:8px;
  align-items:center;
}

button{
  background:transparent;
  color:var(--text);
  border:1px solid rgba(255,255,255,0.04);
  padding:8px 10px;
  border-radius:8px;
  cursor:pointer;
  transition:transform .06s ease, background .08s ease, border-color .08s;
}

button:hover{ transform:translateY(-2px); border-color: rgba(255,255,255,0.08); }

.play-pause{
  background: linear-gradient(90deg,var(--accent-2), rgba(109,211,255,0.18));
  color:#00202a;
  border:none;
}

.remove-button{ background: transparent; color: #ffb6c2; border-color: rgba(255,77,109,0.12); }

/* Volume range */
input[type="range"]{
  -webkit-appearance:none;
  appearance:none;
  width:100%;
  height:8px;
  background:linear-gradient(90deg,var(--accent-2), rgba(255,255,255,0.06));
  border-radius:8px;
  outline:none;
  grid-column: 2;
  grid-row: 2;
}

input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:18px;
  height:18px;
  border-radius:50%;
  background:linear-gradient(180deg,#fff, #dfeef8);
  box-shadow:0 2px 6px rgba(2,6,23,0.6);
  border:3px solid var(--accent-2);
}

/* Responsive adjustments */
@media (max-width:880px){
  #add_song{ grid-template-columns: 1fr; }
  #jukebox-list li{ grid-template-columns: 1fr; }
  #jukebox-list li .controls{ justify-content:space-between; }
}

@media (max-width:420px){
  main{ padding:16px; margin:18px auto; }
  #add_song button[type="submit"]{ width:100%; }
}

/* Small helper text */
small{ color:var(--muted); }

/* Accessibility focus */
:focus{ outline: 3px solid rgba(109,211,255,0.14); outline-offset:2px; }