:root {
  --bg: #121212;
  --card: #181818;
  --accent: #1db954;
  --accent-dark: #169c46;
  --text: #ffffff;
  --muted: #b3b3b3;
  --error: #f15e6c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top, #1f1f1f, var(--bg));
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 560px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

header { text-align: center; margin-bottom: 24px; }
header h1 { margin: 0 0 6px; font-size: 2rem; }
.tagline { color: var(--muted); margin: 0; }

.card {
  background: var(--card);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

h2 { margin-top: 0; }

label {
  display: block;
  margin: 16px 0 6px;
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid #333;
  background: #0e0e0e;
  color: var(--text);
  font-size: 1rem;
}

input:focus, select:focus { outline: 2px solid var(--accent); border-color: var(--accent); }

button {
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  padding: 12px 22px;
  transition: transform 0.06s ease, background 0.2s ease;
}
button:active { transform: scale(0.97); }

.primary {
  background: var(--accent);
  color: #000;
  width: 100%;
  margin-top: 20px;
}
.primary:hover { background: var(--accent-dark); }
.primary.big { padding: 18px; font-size: 1.15rem; }
.primary:disabled { background: #2a2a2a; color: #777; cursor: not-allowed; }

.link {
  background: none;
  color: var(--muted);
  padding: 8px;
  width: 100%;
  margin-top: 8px;
}
.link:hover { color: var(--text); }

.hint { color: var(--muted); font-size: 0.85rem; line-height: 1.5; }
.hint a { color: var(--accent); }

.redirect {
  display: block;
  background: #0e0e0e;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.8rem;
  word-break: break-all;
  margin: 8px 0 4px;
  color: var(--accent);
}

.status { min-height: 1.2em; font-size: 0.9rem; margin-top: 12px; }
.status.error { color: var(--error); }
.status.ok { color: var(--accent); }

.hidden { display: none !important; }

/* Custom song list builder */
#custom-block { margin-top: 12px; }
.add-row { display: flex; gap: 8px; }
.add-row input { flex: 1; }
.add-btn {
  background: #2a2a2a;
  color: var(--text);
  white-space: nowrap;
  padding: 0 16px;
}
.add-btn:hover { background: #383838; }
.custom-list { list-style: none; padding: 0; margin: 12px 0 0; }
.custom-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 12px;
  background: #0e0e0e;
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 0.9rem;
}
.custom-list .remove {
  background: none;
  color: var(--error);
  border: none;
  padding: 2px 8px;
  font-size: 1.1rem;
  cursor: pointer;
}
.custom-list .empty { color: var(--muted); background: none; justify-content: center; }

.scorebar {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.scorebar strong { color: var(--text); }
.scorebar .link { width: auto; margin: 0 0 0 auto; padding: 4px 8px; }

.player-state {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  min-height: 1.4em;
  margin-bottom: 12px;
}

.timer-wrap {
  height: 8px;
  background: #333;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 20px;
}
.timer-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
}
.timer-bar.running {
  width: 100%;
  transition: width 30s linear;
}

.guess-form { margin-top: 16px; }

.result {
  margin-top: 18px;
  padding: 16px;
  border-radius: 10px;
  background: #0e0e0e;
  line-height: 1.6;
}
.result .correct { color: var(--accent); font-weight: 700; }
.result .wrong { color: var(--error); font-weight: 700; }
.result img { width: 64px; height: 64px; border-radius: 6px; float: left; margin-right: 12px; }

footer { text-align: center; margin-top: 20px; }