:root {
  --bg: #ffffff;
  --text: #222;
  --accent: #d81b60;
  --muted: #777;
  --card-bg: #f4f4f4;
}

:root.dark-mode {
  --bg: #121212;
  --text: #f0f0f0;
  --accent: #ff4081;
  --muted: #aaa;
  --card-bg: #1e1e1e;
}

body {
  margin: 0;
  padding: 2rem;
  font-family: system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background-color: var(--card-bg);
  border-radius: 0.75rem;
  padding: 1rem 1.5rem;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.card.current {
  padding: 1.5rem 2rem;
  font-size: 1.2rem;
  background-color: #292929;
  border-left: 4px solid var(--accent);
}

.card h2 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.title,
.artist {
  margin: 0;
  font-size: 1rem;
}

button {
  margin-top: 1rem;
  align-self: flex-start;
  background-color: var(--accent);
  color: var(--text);
  border: none;
  border-radius: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #ff6090;
}

#toggle-theme {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1000;
}

a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

a:hover {
  text-decoration: underline;
}

.time-left {
  color: var(--muted);
  font-size: 0.9rem;
}

#progress-container {
  position: relative;
  width: 100%;
  height: 0.5rem;
  background-color: var(--muted);
  border-radius: 0.25rem;
  overflow: hidden;
  margin-top: 1rem;
}

#progress-bar {
  height: 100%;
  width: 0%;
  background-color: var(--accent);
  transition: width 1s linear;
}