* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f5f5;
  color: #333;
  min-height: 100vh;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: #333;
}

h2 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: #555;
}

.form-card {
  background: #fff;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.form-row {
  margin-bottom: 12px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 4px;
}

.form-row input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-row input:focus {
  border-color: #4a90d9;
}

.time-input-row {
  display: flex;
  gap: 8px;
}

.time-input-row input {
  flex: 1;
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: #4a90d9;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 4px;
}

.btn-primary:hover {
  background: #357abd;
}

.btn-secondary {
  padding: 8px 14px;
  background: #eee;
  color: #444;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: #ddd;
}

.empty-msg {
  text-align: center;
  color: #aaa;
  font-size: 0.9rem;
  padding: 20px 0;
}

.table-card {
  background: #fff;
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
  border-left: 4px solid #27ae60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.table-card.warning {
  border-left-color: #f39c12;
  background: #fffdf0;
}

.table-card.over {
  border-left-color: #e74c3c;
  background: #fff5f5;
}

.table-info {
  flex: 1;
  min-width: 0;
}

.table-num {
  font-size: 1.1rem;
  font-weight: bold;
  color: #333;
}

.table-meta {
  font-size: 0.8rem;
  color: #888;
  margin-top: 2px;
}

.table-timer {
  text-align: center;
  min-width: 90px;
}

.timer-label {
  font-size: 0.75rem;
  color: #888;
  margin-bottom: 2px;
}

.timer-value {
  font-size: 1.6rem;
  font-weight: bold;
  font-variant-numeric: tabular-nums;
  color: #27ae60;
}

.table-card.warning .timer-value {
  color: #f39c12;
}

.table-card.over .timer-value {
  color: #e74c3c;
}

.over-badge {
  font-size: 0.75rem;
  color: #e74c3c;
  font-weight: bold;
}

.delete-btn {
  background: none;
  border: 1px solid #ddd;
  border-radius: 6px;
  color: #aaa;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.delete-btn:hover {
  border-color: #e74c3c;
  color: #e74c3c;
}

@media (max-width: 400px) {
  .table-card {
    flex-wrap: wrap;
  }

  .timer-value {
    font-size: 1.3rem;
  }
}