:root {
  --main-bg: #f7f8fa; /* very light gray background */
  --card-bg: #fff; /* white for cards */
  --accent-bg: #f2f3f5; /* slightly darker for containers */
  --primary-text: #555; /* dark gray for headings */
  --secondary-text: #666; /* medium gray for body */
  --border-color: #e5e7eb; /* light border */
  --accent: #3a3a3a; /* for strong text */
}

label {
  display: block;
  font-weight: 500;
  font-size: 1rem;
  margin-bottom: 0.35rem;
  color: var(--accent);
}

.input-container {
  margin-bottom: 0.8rem;
}

input[type="number"] {
  width: 100%;
  padding: 0.7rem 1rem;
  font-size: 1.08rem;
  border-radius: 10px;
  border: 1.5px solid var(--border-color);
  background: var(--accent-bg);
  color: var(--accent);
  transition: border-color 0.3s, background 0.3s;
  outline: none;
}

input[type="number"]:focus {
  border-color: var(--primary-text);
  background: var(--card-bg);
  box-shadow: 0 0 6px rgba(60, 60, 60, 0.1);
}

.input-error {
  border-color: #d93025 !important;
  background: #fcebea !important;
}

button {
  margin-top: 0.7rem;
  width: 100%;
  padding: 0.9rem 0;
  background-color: var(--primary-text);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-weight: 700;
  font-size: 1.13rem;
  cursor: pointer;
  transition: background-color 0.22s, box-shadow 0.18s;
  letter-spacing: 0.05em;
  box-shadow: 0 1.5px 8px rgba(60, 60, 60, 0.07);
}

button:disabled {
  background-color: #bbb;
  color: #fff;
  cursor: not-allowed;
  opacity: 0.7;
}

button:not(:disabled):hover {
  background-color: #222;
  box-shadow: 0 4px 20px rgba(60, 60, 60, 0.13);
}

#results {
  margin-top: 2rem;
}

.results-heading {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 0.5rem;
}

.result-list {
  background: var(--md-sys-color-surface);
  border-radius: 14px;
  padding: 1rem 0.85rem 0.65rem 0.85rem;
  font-family: "Menlo", "Monaco", monospace;
  max-height: 340px;
  overflow-y: auto;
  font-size: 1.01rem;
  box-shadow: var(--md-sys-elevation-1);
  scroll-behavior: smooth;
}

.result-item {
  margin-bottom: 0.55em;
  color: var(--md-sys-color-on-surface-variant);
}

/* Material 3 song card styles */
.song-card {
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 14px 0;
  box-shadow: 0 1.5px 8px rgba(60, 60, 60, 0.07);
  border: 1.5px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.18s, border 0.18s, background 0.18s;
}
.song-card:hover {
  box-shadow: 0 4px 24px rgba(60, 60, 60, 0.13);
  border: 1.5px solid var(--primary-text);
  background: var(--card-bg);
}
.song-title {
  font-size: 1.18em;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.01em;
  color: var(--primary-text);
}
.song-artist {
  font-size: 1.04em;
  color: var(--secondary-text);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.song-details-box {
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 12px;
  padding: 1.1em 1.2em 1em 1.2em;
  margin-bottom: 1.1em;
  font-size: 1.08em;
  font-weight: 500;
  min-height: 2.2em;
  box-shadow: 0 1.5px 8px rgba(60, 60, 60, 0.07);
  border: 1.5px solid var(--border-color);
  transition: background 0.18s, border 0.18s;
  display: none;
}
.song-details-box.active {
  display: block;
}

/* Toast Notification Styling */
#song-toast-container {
  position: fixed;
  z-index: 9999;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  pointer-events: none;
}
.song-toast {
  background: #d93025;
  color: #fff;
  padding: 0.9em 1.4em;
  margin-top: 0.4em;
  border-radius: 7px;
  font-size: 1rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  opacity: 0;
  animation: slide-in 0.5s forwards, fade-out 0.5s 2s forwards;
  pointer-events: auto;
}
@keyframes slide-in {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes fade-out {
  to {
    opacity: 0;
  }
}

/* Desktop: wider card, more padding, larger font */
@media (min-width: 900px) {
  .song-card {
    padding: 24px 32px;
    font-size: 1.08em;
  }
  .song-title {
    font-size: 1.25em;
  }
  .song-artist {
    font-size: 1.08em;
  }
}

/* Mobile: full width, no shadow, less padding */
@media (max-width: 600px) {
  #song-toast-container {
    right: 50%;
    bottom: 1.2rem;
    left: 0;
    transform: translateX(50%);
    align-items: center;
  }
}