* {
  box-sizing: border-box;
}

:root {
  --blue: #2563eb;
  --blue-dark: #1e3a8a;
  --blue-soft: #dbeafe;
  --bg: #f5f8ff;
  --card: #2f243d;
  --text: #172033;
  --muted: #64748b;
  --border: #d9e3f0;
  --shadow: 0 18px 45px rgba(37, 99, 235, 0.12);
  --radius: 24px;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: radial-gradient(circle at top left, #dbeafe, transparent 35%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 40px clamp(18px, 4vw, 60px) 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

h1, h2 {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 1;
  color: var(--blue-dark);
}

h2 {
  font-size: 1.5rem;
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 650px;
}

.status-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  min-width: 210px;
}

.status-card span {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.status-card strong {
  color: var(--blue-dark);
  font-size: 1.35rem;
}

.dashboard {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 22px;
  padding: 10px clamp(18px, 4vw, 60px) 50px;
}

.panel {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.small-button, button {
  border: none;
  border-radius: 14px;
  padding: 12px 16px;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

button:hover, .quick-link:hover {
  transform: translateY(-2px);
}

.primary {
  background: var(--blue);
  color: white;
}

.danger {
  background: #fee2e2;
  color: #991b1b;
}

.add-link-box,
.music-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  margin-bottom: 16px;
}

.add-link-box {
  display: none;
}

.add-link-box.show {
  display: grid;
}

input, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 13px 14px;
  font-size: 1rem;
  outline: none;
  background: #fbfdff;
}

input:focus, textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.quick-link {
  text-decoration: none;
  color: var(--text);
  background: linear-gradient(135deg, #ffffff, #edf5ff);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  min-height: 110px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.15s ease, border 0.15s ease;
}

.quick-link span {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--blue-dark);
}

.quick-link small {
  color: var(--muted);
  font-size: 0.9rem;
}

.timer-display {
  font-size: clamp(4rem, 12vw, 8rem);
  line-height: 1;
  font-weight: 900;
  text-align: center;
  color: var(--blue-dark);
  padding: 20px 0 10px;
}

.timer-label {
  text-align: center;
  color: var(--muted);
  margin-bottom: 20px;
}

.timer-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.timer-buttons button.active {
  background: var(--blue);
  color: #ffffff;
}

.timer-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.music-panel,
.notes-panel {
  grid-column: span 1;
}

.helper-text {
  color: var(--muted);
  margin-top: -8px;
}

.music-inputs {
  grid-template-columns: 1fr auto;
}

.player-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #e2e8f0;
}

.player-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

textarea {
  min-height: 210px;
  resize: vertical;
}

.finished-alert {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: var(--blue-dark);
  color: white;
  padding: 18px 22px;
  border-radius: 18px;
  box-shadow: var(--shadow);
  font-weight: 900;
  transform: translateY(120px);
  opacity: 0;
  transition: all 0.25s ease;
}

.finished-alert.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .dashboard {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .panel {
    padding: 18px;
  }

  .panel-heading,
  .add-link-box,
  .music-inputs {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .link-grid,
  .timer-buttons,
  .timer-controls {
    grid-template-columns: 1fr;
  }

  .status-card {
    width: 100%;
  }
}