:root {
  font-size: clamp(10px, 5vw, 20px);
  --primary-color: #4361ee;
  --secondary-color: #3a0ca3;
  --success-color: #4cc9f0;
  --danger-color: #f72585;
  --light-color: #f8f9fa;
  --dark-color: #212529;
}

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

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  background-color: #f8f9fa;
  color: #333;
  max-width: 100vw;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
}

.header {
  text-align: center;
  margin: 2rem 0;
}

.timer-form {
  background-color: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.btn-primary:hover {
  background-color: var(--secondary-color);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-secondary {
  background-color: #4cc9f0;
  color: white;
}

.btn-secondary:hover {
  background-color: #3a86ff;
}

.timer-card {
  background-color: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  margin: 1rem auto;
  max-width: 400px;
  transition: all 0.3s ease;
}

.timer-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.timer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: 1px solid #eee;
  padding-bottom: 0.5rem;
}

.timer-name {
  font-size: 1.25rem;
  font-weight: 600;
}

.timer-countdown {
  font-size: 2rem;
  text-align: center;
  margin: 1rem 0;
  font-weight: 700;
}

.timer-details {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: #666;
}

.timer-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}

.spin {
  animation: spin 1s linear infinite;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-left-color: var(--primary-color);
  border-radius: 50%;
  height: 30px;
  width: 30px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.error-message {
  color: var(--danger-color);
  padding: 0.5rem;
  margin: 1rem 0;
  background-color: rgba(247, 37, 133, 0.1);
  border-radius: 4px;
}

.refresh-container {
  display: flex;
  justify-content: center;
  margin: 1rem 0;
}

.success-message {
  color: var(--success-color);
  padding: 0.5rem;
  margin: 1rem 0;
  background-color: rgba(76, 201, 240, 0.1);
  border-radius: 4px;
}