/* InSync Vibe - ?????????? */

/* Global Variables */
:root {
  --primary-color: #3498db;
  --primary-dark: #2980b9;
  --secondary-color: #2c3e50;
  --background-color: #f7f9fc;
  --card-background: #ffffff;
  --text-color: #333333;
  --light-gray: #f8f9fa;
  --border-color: #eaeaea;
  --error-color: #e74c3c;
  --error-light: #f8d7da;
  --success-color: #2ecc71;
  --success-light: #d4edda;
  --warning-color: #f39c12;
  --warning-light: #fff3cd;
  --info-color: #3498db;
  --info-light: #e1f5fe;
  --highlight-color: rgba(231, 76, 60, 0.3);
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition-normal: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Meiryo', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
  padding: 20px;
  max-width: 900px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin: 20px 0;
  color: var(--secondary-color);
}

h2 {
  color: var(--secondary-color);
  margin: 30px 0 15px 0;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 5px;
}

h3 {
  color: var(--secondary-color);
  margin: 20px 0 10px 0;
}

p {
  margin-bottom: 15px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

ul, ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 10px;
}

.container {
  background: var(--card-background);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
}

button, .btn {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
  transition: var(--transition-normal);
}

button:disabled, .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.hidden {
  display: none !important;
}

/* ???????????? */
.site-header {
  background-color: var(--card-background);
  box-shadow: var(--shadow);
  padding: 10px 0;
  margin-bottom: 20px;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: none;
}

.logo a {
  color: var(--secondary-color);
  font-size: 1.5em;
  font-weight: bold;
  text-decoration: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav li {
  margin: 0 10px;
}

.main-nav a {
  color: var(--text-color);
  text-decoration: none;
  padding: 5px;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.main-nav a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

/* ??????? - ??????? */
.language-selector {
  text-align: right;
  margin: 0 auto 20px;
  max-width: 900px;
  padding: 0 20px;
}

.language-btn {
  background: none;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  margin-left: 5px;
}

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

/* ?????? - ??????????? */
.ad-container {
  margin: 20px 0;
  text-align: center;
  min-height: 100px;
  background-color: var(--light-gray);
  border-radius: 4px;
  padding: 10px;
}

/* ???? */
footer {
  text-align: center;
  margin-top: 30px;
  padding: 20px 0;
  color: #7f8c8d;
  font-size: 0.9em;
  background-color: var(--background-color);
  border-top: 1px solid var(--border-color);
}

.footer-links {
  margin-bottom: 10px;
}

.footer-links a {
  margin: 0 5px;
}

/* ??????? */
.note-box, .highlight, .important, .disclaimer, .operation-guide {
  background-color: var(--info-light);
  border-left: 4px solid var(--info-color);
  padding: 15px;
  margin: 15px 0;
  border-radius: 0 4px 4px 0;
}

.important {
  background-color: var(--success-light);
  border-left: 4px solid var(--success-color);
}

.disclaimer {
  background-color: var(--light-gray);
  border-left: 4px solid var(--warning-color);
}

/* ?????????????? */
.step-container {
  background-color: var(--light-gray);
  border-left: 4px solid var(--primary-color);
  padding: 15px;
  margin: 20px 0;
  border-radius: 0 4px 4px 0;
}

.step-number {
  display: inline-block;
  background-color: var(--primary-color);
  color: white;
  width: 30px;
  height: 30px;
  text-align: center;
  line-height: 30px;
  border-radius: 50%;
  margin-right: 10px;
}

.shortcut-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.shortcut-table th, .shortcut-table td {
  border: 1px solid #ddd;
  padding: 8px 12px;
  text-align: left;
}

.shortcut-table th {
  background-color: #f2f2f2;
  font-weight: bold;
}

.shortcut-table tr:nth-child(even) {
  background-color: #f9f9f9;
}

/* FAQ??????? */
.faq-item {
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}

.faq-question {
  font-size: 1.2em;
  font-weight: bold;
  color: var(--secondary-color);
  margin-bottom: 10px;
  background-color: var(--light-gray);
  padding: 10px;
  border-left: 4px solid var(--primary-color);
  border-radius: 0 4px 4px 0;
}

.faq-answer {
  padding-left: 15px;
}

.category-section {
  margin-bottom: 40px;
}

/* ?????????????? */
#dropArea {
  border: 2px dashed var(--primary-color);
  border-radius: var(--border-radius);
  padding: 30px;
  text-align: center;
  margin: 20px 0;
  background-color: var(--light-gray);
  transition: var(--transition-normal);
}

#dropArea.highlight {
  background-color: #e3f2fd;
  border-color: var(--primary-dark);
}

.file-label {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
  margin-top: 10px;
  transition: var(--transition-normal);
}

.file-label:hover {
  background-color: var(--primary-dark);
}

#fileInput {
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
  position: absolute;
  z-index: -1;
}

/* ??????????? */
#waveformContainer {
  position: relative;
  height: 200px;
  background-color: var(--secondary-color);
  border-radius: 5px;
  margin: 20px 0 5px 0;
  overflow: hidden;
  cursor: crosshair;
}

#waveform {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

#waveformScroll {
  height: 10px;
  background-color: #eee;
  border-radius: 5px;
  margin-top: 5px;
  position: relative;
  cursor: pointer;
}

#waveformScrollThumb {
  height: 10px;
  background-color: var(--primary-color);
  border-radius: 5px;
  position: absolute;
  left: 0;
  min-width: 20px;
}

/* ????????? */
.zoom-controls {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 5px;
}

.zoom-controls button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  width: 30px;
  height: 30px;
  margin-left: 5px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-controls button:hover {
  background-color: var(--primary-dark);
}

.zoom-icon {
  font-style: normal;
}

/* ????????????? */
#playbackIndicator {
  position: absolute;
  top: 0;
  height: 100%;
  width: 2px;
  background-color: var(--error-color);
  z-index: 15;
  pointer-events: none;
}

#trimArea {
  position: absolute;
  top: 0;
  height: 100%;
  background-color: var(--highlight-color);
  border-left: 2px solid rgba(192, 57, 43, 0.8);
  border-right: 2px solid rgba(192, 57, 43, 0.8);
  z-index: 10;
}

.trim-handle {
  position: absolute;
  width: 8px;
  height: 100%;
  background-color: rgba(192, 57, 43, 0.8);
  cursor: ew-resize;
  z-index: 20;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  transition: background-color 0.2s;
}

.trim-handle:hover {
  background-color: #c0392b;
}

#startHandle {
  left: 0;
}

#endHandle {
  right: 0;
}

.handle-grip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4px;
  height: 30px;
  background-color: rgba(255, 255, 255, 0.8);
  border-radius: 2px;
}

.time-tooltip {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 12px;
  white-space: nowrap;
}

.selection-guide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  pointer-events: none;
  text-align: center;
  width: 80%;
}

/* ??????? */
#fileInfo, #selectionInfo {
  background-color: #eaf2f8;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 20px;
}

/* ???????? */
#errorMessage {
  background-color: var(--error-light);
  color: #721c24;
  padding: 10px;
  border-radius: 4px;
  margin: 10px 0;
}

/* ????????? */
.controls {
  display: flex;
  gap: 10px;
  margin: 20px 0;
  flex-wrap: wrap;
}

#playButton {
  background-color: var(--success-color);
  color: white;
}

#playButton:hover:not(:disabled) {
  background-color: #27ae60;
}

#resetSelectionButton {
  background-color: #95a5a6;
  color: white;
}

#resetSelectionButton:hover:not(:disabled) {
  background-color: #7f8c8d;
}

#trimButton {
  background-color: var(--warning-color);
  color: white;
}

#trimButton:hover:not(:disabled) {
  background-color: #d35400;
}

#downloadButton {
  background-color: var(--primary-color);
  color: white;
}

#downloadButton:hover:not(:disabled) {
  background-color: var(--primary-dark);
}

/* ?????????? */
#formatSelector {
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ddd;
  margin-right: 10px;
}

/* ????? */
.operation-guide {
  position: relative;
  background-color: #f8f9fa;
  border-left: 4px solid #3498db;
  padding: 15px;
  margin: 15px 0;
  border-radius: 0 4px 4px 0;
}

.small-button {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 20px;
  height: 20px;
  font-size: 12px;
  line-height: 1;
  padding: 0;
  background-color: #eee;
  color: #555;
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

/* ???????????????????? */
.policy-section {
  margin-bottom: 30px;
}

.policy-date {
  text-align: right;
  color: #7f8c8d;
  margin-bottom: 20px;
  font-style: italic;
}

/* ???????????? */
@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
  }
    
  .logo {
    margin-bottom: 10px;
  }
    
  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .controls {
    flex-direction: column;
  }
  
  #formatSelector {
    width: 100%;
    margin-bottom: 10px;
  }
  
  .zoom-controls {
    justify-content: center;
  }
  
  .language-selector {
    text-align: center;
  }
}