/* CSS Variables for Themes */
:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --header-bg: #f8f9fa;
  --card-bg: #ffffff;
  --border-color: #e0e0e0;
  --primary-color: #007bff;
  --primary-hover: #0056b3;
  --success-color: #28a745;
  --success-hover: #1e7e34;
  --warning-color: #ffc107;
  --warning-hover: #d39e00;
  --danger-color: #dc3545;
  --danger-hover: #a71e2a;
  --lecture-bg: #e3f2fd;
  --break-bg: #f1f8e9;
  --modal-bg: rgba(0, 0, 0, 0.5);
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg-color: #1a1a1a;
  --text-color: #ffffff;
  --header-bg: #2d2d2d;
  --card-bg: #333333;
  --border-color: #555555;
  --primary-color: #4a90e2;
  --primary-hover: #357abd;
  --success-color: #4caf50;
  --success-hover: #388e3c;
  --warning-color: #ff9800;
  --warning-hover: #f57c00;
  --danger-color: #f44336;
  --danger-hover: #d32f2f;
  --lecture-bg: #1e3a5f;
  --break-bg: #2e4e2e;
  --modal-bg: rgba(0, 0, 0, 0.7);
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.app-container {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
}

.app-container.editor-visible {
  grid-template-columns: var(--left-width, 50%) 8px 1fr;
}

.app-container > .header {
  grid-column: 1 / -1;
}

.app-container > .main-content {
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background-color: var(--header-bg);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
}

.header h1 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
}

.theme-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.theme-toggle,
.fullscreen-btn,
.mute-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
}

.theme-toggle svg,
.fullscreen-btn svg,
.mute-toggle svg {
  color: var(--text-color);
}

.theme-toggle:hover,
.fullscreen-btn:hover,
.mute-toggle:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

.mute-toggle {
  color: var(--text-color);
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
}

.mute-toggle.muted {
  color: var(--danger-color);
  border-color: var(--danger-color);
}

.mute-toggle.muted:hover {
  background-color: var(--danger-color);
  color: white;
}

/* Fixed Buttons */
.settings-btn-fixed, .github-btn-fixed {
  position: fixed;
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  font-size: 1.5rem;
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  z-index: 100;
}

.settings-btn-fixed {
  bottom: 2rem;
  right: 2rem;
}

.github-btn-fixed {
  bottom: 2rem;
  left: 2rem;
}

.settings-btn-fixed:hover, .github-btn-fixed:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  transition: padding 0.3s ease;
  container-type: inline-size;
  container-name: timer-container;
}

/* Compact Layout (when timer area is narrow) */
.main-content.compact-layout {
  padding: 1rem;
}

.main-content.compact-layout .time-display {
  margin-bottom: 1.5rem;
  padding: 1rem;
}

.main-content.compact-layout .action-buttons {
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.main-content.compact-layout .icon-btn {
  width: 50px;
  height: 50px;
  font-size: 1.5rem;
}

.main-content.compact-layout .action-btn {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.main-content.compact-layout .progress-container {
  margin: 1rem 0;
}


.main-content.compact-layout .time-adjust-btn {
  width: 35px;
  height: 35px;
  font-size: 0.85rem;
}

/* Header Title Styles */
#header-title {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  transition: color 0.3s ease;
}

#header-title.lecture {
  color: #1565c0;
}

#header-title.break {
  color: #2e7d32;
}

#header-title.warning {
  color: #f57c00;
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Current Time in Header */
.current-time-header {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  margin-right: 1rem;
  opacity: 0.8;
}

/* Time Display */
.time-display {
  text-align: center;
  margin-bottom: 2rem;
  padding: 2rem;
  border-radius: 20px;
  min-width: 300px;
  max-width: 1000px;
  width: 100%;
}

.timer {
  font-size: clamp(2.5rem, 10vw, 12rem);
  font-weight: bold;
  font-family: 'Courier New', monospace;
  color: var(--primary-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 1rem;
  transition: color 0.3s ease;
  max-width: 100%;
  overflow: hidden;
  text-overflow: clip;
}

/* エディタ表示時はコンテナ幅に応じて調整 */
.app-container.editor-visible .timer {
  font-size: clamp(2rem, 20cqw, 10rem);
}

.timer.overtime {
  color: var(--danger-color);
}

.timer.break-mode {
  color: var(--success-color);
}

.end-time {
  font-size: clamp(1.2rem, 2.5vw, 2rem);
  margin: 1rem 0;
  font-weight: 600;
  color: var(--primary-color);
}

/* エディタ表示時はコンテナ幅に応じて調整 */
.app-container.editor-visible .end-time {
  font-size: clamp(1rem, 5cqw, 1.8rem);
}

#end-time-container.break-mode .end-time {
  color: var(--success-color);
}

.time-adjust-controls {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
  align-items: center;
  justify-content: center;
}

.time-adjust-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.time-adjust-btn:hover {
  background-color: var(--primary-hover);
  transform: scale(1.1);
}

.break-mode .time-adjust-btn {
  background-color: var(--success-color);
}

.break-mode .time-adjust-btn:hover {
  background-color: var(--success-hover);
}

@media (max-width: 768px) {
  .time-adjust-controls {
    gap: 0.3rem;
    margin-top: 0.3rem;
  }
  
  .time-adjust-btn {
    width: 30px;
    height: 30px;
    font-size: 0.7rem;
  }
}

/* Time Controls */
.time-controls {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.time-adjust {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.time-adjust label {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 500;
}

.time-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 25px;
  padding: 0.5rem;
  box-shadow: var(--shadow);
}

.time-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.time-btn:hover {
  background-color: var(--primary-hover);
  transform: scale(1.1);
}

#lecture-time,
#lecture-time-settings,
#break1-time-settings,
#break2-time-settings,
#warning-time-settings,
#tick-interval-settings {
  border: none;
  background: none;
  color: var(--text-color);
  font-size: 1.2rem;
  font-weight: bold;
  text-align: center;
  width: 60px;
  outline: none;
}

/* Break Type Selection */
.break-type-group {
  display: flex;
  gap: 0.5rem;
  background-color: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: 25px;
  padding: 0.5rem;
  box-shadow: var(--shadow);
}

.break-type-btn {
  background-color: transparent;
  color: var(--text-color);
  border: none;
  border-radius: 20px;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 60px;
}

.break-type-btn:hover {
  background-color: var(--border-color);
}

.break-type-btn.active {
  background-color: var(--success-color);
  color: white;
}

.break-type-btn.active:hover {
  background-color: var(--success-hover);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.action-btn {
  padding: 1rem 2.5rem;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 600;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
  min-width: 150px;
}

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

.lecture-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

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

.break-btn:hover {
  background-color: var(--success-hover);
  transform: translateY(-2px);
}

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

.stop-btn:hover {
  background-color: var(--danger-hover);
  transform: translateY(-2px);
}

/* Icon Buttons */
.icon-btn {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  font-size: 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0.5rem;
  box-shadow: var(--shadow);
}

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

.break-icon-btn:hover {
  background-color: var(--success-color);
  color: white;
  transform: scale(1.1);
}

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

.lecture-icon-btn:hover {
  background-color: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

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

.stop-icon-btn:hover {
  background-color: var(--danger-color);
  color: white;
  transform: scale(1.1);
}

/* Progress Indicator */
.progress-container {
  width: 100%;
  max-width: 100%;
  text-align: center;
}

.progress-bar {
  /* 7桁の等幅フォントの幅に合わせる: font-size × 0.6 × 7 = font-size × 4.2 */
  width: clamp(10.5rem, 42vw, 50.4rem);
  max-width: 100%;
  margin: 0 auto 1rem auto;
  height: clamp(12px, 1.5vw, 20px);
  background-color: var(--border-color);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* エディタ表示時はコンテナ幅に応じて調整 */
.app-container.editor-visible .progress-bar {
  /* エディタ表示時も7桁分: font-size × 0.6 × 7 = font-size × 4.2 */
  width: clamp(8.4rem, 84cqw, 42rem);
  height: clamp(10px, 2.5cqw, 18px);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 10px;
}


/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: var(--modal-bg);
  animation: fadeIn 0.3s ease;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background-color: var(--card-bg);
  border-radius: 20px;
  width: 90%;
  max-width: 750px;
  height: 80vh;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { 
    transform: translateY(50px);
    opacity: 0;
  }
  to { 
    transform: translateY(0);
    opacity: 1;
  }
}

/* Tab Navigation */
.tab-navigation {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 1.5rem 0;
  border-bottom: 2px solid var(--border-color);
}

.tab-btn {
  background: none;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-color);
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
  position: relative;
  bottom: -2px;
}

.tab-btn:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .tab-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
  font-weight: 600;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-content.scrollable-tab {
  height: 100%;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.modal-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text-color);
  transition: color 0.3s ease;
}

.modal-close:hover {
  color: var(--danger-color);
}

.modal-body {
  padding: 2rem;
  flex: 1;
  overflow-y: auto;
}

.setting-group {
  margin-bottom: 2rem;
}

.setting-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 1.1rem;
}

#volume-slider {
  width: 70%;
  margin-right: 1rem;
}

#volume-value {
  font-weight: 600;
  color: var(--primary-color);
}

.sound-controls {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.sound-controls select,
.language-select {
  flex: 1;
  min-width: 200px;
  padding: 0.5rem;
  border: 2px solid var(--border-color);
  border-radius: 5px;
  background-color: var(--card-bg);
  color: var(--text-color);
  font-size: 1rem;
}

.test-sound {
  background-color: var(--warning-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.test-sound:hover {
  background-color: var(--warning-hover);
  transform: scale(1.05);
}

/* Responsive Design */
@media (max-width: 768px) {
  .header {
    padding: 1rem;
  }

  .main-content {
    padding: 1rem;
  }

  .time-display {
    padding: 1rem;
  }

  .time-controls {
    flex-direction: column;
    gap: 1rem;
  }

  .action-buttons {
    flex-direction: column;
    align-items: center;
  }

  .action-btn {
    width: 100%;
    max-width: 200px;
  }
  
  .sound-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .sound-controls select {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .theme-toggle,
  .fullscreen-btn,
  .mute-toggle {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }
  
  .mute-toggle {
    width: 40px;
    height: 40px;
  }
  
  .settings-btn-fixed, .github-btn-fixed {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    bottom: 1rem;
  }
  
  .settings-btn-fixed {
    right: 1rem;
  }
  
  .github-btn-fixed {
    left: 1rem;
  }
  
  .icon-btn {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    margin: 0 0.3rem;
  }
  
  .current-time-header {
    font-size: 0.8rem;
    margin-right: 0.5rem;
  }
  
  .time-input-group {
    padding: 0.3rem;
  }
  
  .time-btn {
    width: 30px;
    height: 30px;
    font-size: 1rem;
  }
  
  #lecture-time,
  #lecture-time-settings,
  #break1-time-settings,
  #break2-time-settings,
  #warning-time-settings,
  #tick-interval-settings {
    width: 50px;
    font-size: 1rem;
  }
  
  .break-type-group {
    padding: 0.3rem;
  }
  
  .break-type-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    min-width: 50px;
  }
  
  .modal-content {
    width: 95%;
    margin: 1rem;
  }
  
  .modal-header {
    padding: 1rem 1.5rem;
  }
  
  .modal-body {
    padding: 1.5rem;
  }
}

/* Full Screen Support */
@media (min-width: 1920px) {
  .header h1 {
    font-size: 3rem;
  }
}

/* Resizer */
.resizer {
  background-color: var(--border-color);
  cursor: col-resize;
  position: relative;
  transition: background-color 0.2s ease;
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.resizer.resizing {
  background-color: var(--primary-hover);
}

.resizer-handle {
  width: 3px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  pointer-events: none;
}

.resizer:hover .resizer-handle {
  background-color: rgba(255, 255, 255, 0.6);
}

/* Editor Area */
.editor-area {
  background-color: var(--card-bg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.editor-container {
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.editor-wrapper {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 1rem;
  position: relative;
}

#editor {
  min-height: 100%;
  width: 100%;
}

/* Apply zoom to editor content only */
#editor .ql-editor {
  word-wrap: break-word;
  overflow-wrap: break-word;
  transform-origin: top left;
  transition: transform 0.3s ease;
}

.zoom-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.5rem;
  background-color: var(--header-bg);
  border-radius: 8px;
  flex-shrink: 0;
}

.zoom-btn {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
}

.zoom-btn:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

#zoom-level {
  font-weight: 600;
  min-width: 50px;
  text-align: center;
}

/* Document Controls */
.document-controls {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  background-color: var(--header-bg);
  border-radius: 8px;
  align-items: center;
  margin-top: 0.5rem;
}

.document-dropdown {
  flex: 1;
  padding: 0.5rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: 0.95rem;
  cursor: pointer;
  transition: border-color 0.2s;
}

.document-dropdown:hover {
  border-color: var(--primary-color);
}

.document-dropdown:focus {
  outline: none;
  border-color: var(--primary-color);
}

.control-btn {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-color);
  flex-shrink: 0;
}

.control-btn:hover:not(:disabled) {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: white;
  transform: scale(1.1);
}

.control-btn.delete-btn:hover:not(:disabled) {
  border-color: var(--danger-color);
  background-color: var(--danger-color);
}

.control-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Responsive Editor Layout */
@media (max-width: 767px) {
  .app-container.editor-visible {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr 1fr;
  }

  .resizer {
    display: none !important;
  }

  .editor-area {
    border-top: 1px solid var(--border-color);
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .editor-container {
    padding: 0.75rem;
  }
}

/* Data Management Tab */
.data-textarea {
  width: 100%;
  min-height: 300px;
  padding: 1rem;
  border: 2px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  resize: vertical;
  margin-top: 0.5rem;
}

.data-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.data-controls {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.data-btn {
  flex: 1;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  background-color: var(--primary-color);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.data-btn:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.data-btn.danger {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
  margin-top: 0.5rem;
}

.data-btn.danger:hover {
  background-color: #c0392b;
  border-color: #c0392b;
  box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
}

.data-btn.secondary {
  background-color: var(--bg-color);
  border-color: var(--border-color);
  color: var(--text-color);
}

.data-btn.secondary:hover {
  background-color: var(--header-bg);
  border-color: var(--border-color);
  color: var(--text-color);
}

/* License Tab */
.license-content {
  line-height: 1.6;
  font-size: 0.9rem;
}

.license-content h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.license-content ol {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
}

.license-content li {
  margin-bottom: 0.5rem;
}

/* Support Tab */
.support-content {
  text-align: center;
  padding: 2rem 1rem;
}

.support-content h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.bmc-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.bmc-qr {
  max-width: 200px;
  width: 100%;
  height: auto;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  transition: transform 0.3s ease;
}

.bmc-qr:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.bmc-url {
  color: var(--primary-color);
  text-decoration: none;
  font-size: 1rem;
  word-break: break-all;
  transition: all 0.3s ease;
}

.bmc-url:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}