# Responsive mobile layout
@media (max-width: 480px) {
  .panel {
    width: 98vw;
    min-width: unset;
    max-width: 100vw;
    margin: 10px 0;
    padding: 10px;
    border-radius: 10px;
  }
  .main-content {
    min-width: unset;
    max-width: 100vw;
    padding: 0 2vw;
  }
  .glass-card {
    padding: 24px 6vw 18px 6vw;
    border-radius: 14px;
  }
  #footer-credit {
    font-size: 1em;
    padding: 8px 10vw;
    border-radius: 10px;
  }
}
body {
  background: #181a1b;
  color: #f3f3f3;
  font-family: 'Segoe UI', Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-image: url('https://img.freepik.com/premium-photo/vector-black-minimal-aesthetic-grid-pattern-background_1049240-170.jpg?semt=ais_hybrid&w=740');
  background-size: 800px 800px;
  background-repeat: repeat;
  background-position: 50% 50%;
  transition: background-position 0.2s cubic-bezier(.25,.46,.45,.94);
}
h1 {
  margin-bottom: 40px;
  font-weight: 600;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
}
.animated-underline {
  display: block;
  margin: 0 auto 32px auto;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #00c6ff, #0072ff, #00c6ff);
  border-radius: 2px;
  animation: gradient-move 2s linear infinite;
  position: relative;
  z-index: 2;
}
@keyframes gradient-move {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
.glass-card {
  background: rgba(30, 30, 30, 0.55);
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.37);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 24px;
  padding: 48px 36px 36px 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
}
.scroll-panel {
  padding: 32px 24px 32px 24px !important;
}
.button-group {
  display: flex;
  gap: 30px;
}
.modern-btn {
  background: linear-gradient(90deg, #232526 0%, #414345 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 18px 40px;
  font-size: 1.2em;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 4px 24px 0 rgba(0,0,0,0.2);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s, box-shadow 0.3s;
  outline: none;
  position: relative;
  overflow: hidden;
  /* Add space for chess icon */
  padding-left: 56px;
}
.modern-btn .chess-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%) scale(1);
  width: 28px;
  height: 28px;
  transition: transform 0.3s cubic-bezier(.25,.46,.45,.94);
  pointer-events: none;
  opacity: 0.85;
}
.modern-btn:hover .chess-icon {
  transform: translateY(-50%) scale(1.18) translateX(8px);
  filter: drop-shadow(0 0 8px #00c6ff88);
}
.modern-btn::before {
  content: '';
  position: absolute;
  top: -2px; left: -2px; right: -2px; bottom: -2px;
  border-radius: 14px;
  background: linear-gradient(270deg, #00c6ff, #0072ff, #00c6ff);
  z-index: 0;
  opacity: 0.5;
  filter: blur(8px);
  transition: opacity 0.3s;
  animation: border-gradient 2.5s linear infinite;
}
@keyframes border-gradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
.modern-btn:hover, .modern-btn:focus {
  background: linear-gradient(90deg, #414345 0%, #232526 100%);
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.3), 0 0 16px #00c6ff99;
}
.modern-btn:active {
  transform: scale(0.97);
  box-shadow: 0 2px 8px 0 rgba(0,0,0,0.2);
}
.modern-btn span {
  position: relative;
  z-index: 1;
}
.modern-btn::before {
  pointer-events: none;
}
.panel {
  width: 320px;
  background: rgba(24, 24, 24, 0.95);
  border-radius: 16px;
  margin: 30px 0;
  padding: 20px;
  box-shadow: 0 0 24px #0008;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 260px;
  max-height: 90vh;
  overflow-y: auto;
}
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 340px;
  z-index: 1;
}
#lichessSearchBtn {
  margin-bottom: 14px;
  padding: 8px 18px;
  border-radius: 6px;
  border: none;
  background: #00ffe0;
  color: #222;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 2px 8px #00ffe088;
}
#lichessSearchBtn:hover {
  background: #00bfae;
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 6px 24px #00ffe0cc;
}
#lichessSearchBtn:active {
  background: #00a896;
  transform: scale(0.97);
  box-shadow: 0 2px 8px #00ffe088;
}
.spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 4px solid #00ffe0;
  border-top: 4px solid #222;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 16px auto;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
#footer-credit {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translateX(-50%);
  color: #00ffe0;
  font-size: 1.1em;
  font-weight: 600;
  background: rgba(24,24,24,0.85);
  padding: 10px 28px;
  border-radius: 16px;
  box-shadow: 0 2px 12px #00ffe044;
  z-index: 1000;
  letter-spacing: 1px;
}