/* TCH Tracker - Custom Styles */

:root {
  --primary-color: #007bff;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --light-gray: #f8f9fa;
  --dark-gray: #495057;
  --border-color: #dee2e6;
}

/* Global Styles */
body {
  font-family: 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: #ffffff;
  line-height: 1.6;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: white;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

/* Timer Card */
.timer-card {
  background: var(--light-gray);
  color: var(--dark-gray);
  border: 2px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.timer-card .card-title {
  color: var(--dark-gray);
  margin-bottom: 2rem;
}

.countdown {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary-color);
  font-family: 'Courier New', monospace;
}

.timer-display {
  padding: 2rem 0;
}

/* Metrics */
.metric h3, .metric h4 {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--dark-gray);
}

.metric small {
  color: var(--dark-gray);
  opacity: 0.7;
}

/* Cards */
.card {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  background: white;
}

/* Buttons */
.btn {
  border-radius: 6px;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

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

.btn-success {
  background-color: var(--success-color);
  border-color: var(--success-color);
}

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

/* Navigation */
.nav-tabs {
  border-bottom: 1px solid var(--border-color);
}

.nav-tabs .nav-link {
  border: 1px solid transparent;
  border-radius: 4px 4px 0 0;
  padding: 1rem 1.5rem;
  color: var(--dark-gray);
  margin-right: 0.25rem;
}

.nav-tabs .nav-link.active {
  background: white;
  color: var(--primary-color);
  border-color: var(--border-color) var(--border-color) white;
  font-weight: 600;
}

/* Forms */
.form-control, .form-select {
  border-radius: 4px;
  border: 1px solid var(--border-color);
  padding: 0.75rem;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.15);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.form-switch .form-check-input {
  width: 3rem;
  height: 1.5rem;
}

/* Modal */
.modal-content {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
}

.modal-footer {
  border-top: 1px solid var(--border-color);
}

/* Progress Bar */
.progress {
  height: 8px;
  border-radius: 4px;
  background-color: var(--light-gray);
}

.progress-bar {
  border-radius: 4px;
  background-color: var(--primary-color);
}

/* Chart Container */
#tchChart {
  max-height: 400px;
}

/* Toast */
.toast {
  border: 1px solid var(--border-color);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Active Rest Instructions */
.instructions ol li {
  padding: 0.5rem 0;
  font-size: 1.1rem;
}

.instructions ol li strong {
  color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  .countdown {
    font-size: 2.5rem;
  }
  
  .timer-display {
    padding: 1rem 0;
  }
  
  .btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
  
  .card-body {
    padding: 1.5rem;
  }
  
  .modal-body {
    padding: 1.5rem;
  }
}

@media (max-width: 576px) {
  .countdown {
    font-size: 2rem;
  }
  
  .nav-tabs .nav-link {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
  
  .metric h3, .metric h4 {
    font-size: 1.5rem;
  }
}

/* Slider Labels */
.slider-labels {
  position: relative;
  width: 100%;
}

.slider-label {
  position: absolute;
  transform: translateX(-50%);
  white-space: nowrap;
}

.slider-label:first-child {
  transform: translateX(0%); /* 左端は左寄せ */
}

.slider-label:last-child {
  transform: translateX(-100%); /* 右端は右寄せ */
}

/* Utility Classes */
.shadow-lg {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
}