/* Material Design Icons */
@import url('https://fonts.googleapis.com/icon?family=Material+Icons');
/* Roboto Font */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

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

/* Material Design カラーパレット - ライトモード */
:root {
  --md-primary: #1976d2;
  --md-primary-dark: #1565c0;
  --md-primary-light: #42a5f5;
  --md-secondary: #424242;
  --md-secondary-light: #6d6d6d;
  --md-accent: #00bcd4;
  --text-primary: rgba(0, 0, 0, 0.87);
  --text-secondary: rgba(0, 0, 0, 0.6);
  --text-disabled: rgba(0, 0, 0, 0.38);
  --bg-main: #fafafa;
  --bg-secondary: #ffffff;
  --card-bg: #ffffff;
  --border-color: rgba(0, 0, 0, 0.12);
  --shadow-1: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-2: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-4: 0 8px 16px rgba(0, 0, 0, 0.14);
  --success-color: #4caf50;
  --danger-color: #f44336;
  --warning-color: #ff9800;
  --info-color: #2196f3;
  --divider: rgba(0, 0, 0, 0.12);
  --hover-overlay: rgba(0, 0, 0, 0.04);
}

/* Material Design カラーパレット - ダークモード */
body.dark-mode {
  --md-primary: #90caf9;
  --md-primary-dark: #42a5f5;
  --md-primary-light: #e3f2fd;
  --md-secondary: #ce93d8;
  --md-secondary-light: #f3e5f5;
  --md-accent: #80deea;
  --text-primary: rgba(255, 255, 255, 0.87);
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-disabled: rgba(255, 255, 255, 0.38);
  --bg-main: #121212;
  --bg-secondary: #1e1e1e;
  --card-bg: #1e1e1e;
  --border-color: rgba(255, 255, 255, 0.12);
  --shadow-1: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-2: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-4: 0 8px 16px rgba(0, 0, 0, 0.5);
  --success-color: #81c784;
  --danger-color: #e57373;
  --warning-color: #ffb74d;
  --info-color: #64b5f6;
  --divider: rgba(255, 255, 255, 0.12);
  --hover-overlay: rgba(255, 255, 255, 0.08);
}

/* ダークモード用フォーカススタイル調整 */
body.dark-mode .btn:focus {
  box-shadow: 0 0 0 3px rgba(144, 202, 249, 0.5);
}

body.dark-mode .btn-primary:focus {
  box-shadow: 0 0 0 3px rgba(144, 202, 249, 0.6), var(--shadow-2);
}

body.dark-mode .btn-danger:focus {
  box-shadow: 0 0 0 3px rgba(229, 115, 115, 0.5), var(--shadow-2);
}

body.dark-mode .btn-control:focus {
  box-shadow: 0 0 0 3px rgba(129, 199, 132, 0.5), var(--shadow-2);
}

body.dark-mode .btn-control.muted:focus {
  box-shadow: 0 0 0 3px rgba(255, 183, 77, 0.5), var(--shadow-2);
}

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  min-height: 100vh;
  padding: 0;
  margin: 0;
  transition: background 0.2s cubic-bezier(0.4, 0, 0.2, 1), color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

/* Material Icons */
.material-icons {
  font-family: 'Material Icons';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  display: inline-block;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'liga';
}

/* テーマ切り替えボタン - Material FAB */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  width: 56px;
  height: 56px;
  background: var(--md-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-2);
  z-index: 1000;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  box-shadow: var(--shadow-4);
  transform: scale(1.05);
}

.theme-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.4), var(--shadow-2);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--md-primary-light);
  outline-offset: 2px;
}

.theme-toggle:active {
  box-shadow: var(--shadow-2);
  transform: scale(0.95);
}

/* Material Design Cards */
header {
  background: var(--card-bg);
  margin-bottom: 24px;
  padding: 24px;
  border-radius: 4px;
  box-shadow: var(--shadow-2);
  border: none;
}

header h1 {
  font-size: 24px;
  color: var(--text-primary);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 32px;
}

.section {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 4px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-1);
  border: none;
  transition: box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.section:hover {
  box-shadow: var(--shadow-2);
}

.section.hidden {
  display: none;
}

h2 {
  color: var(--text-primary);
  margin-bottom: 16px;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.15px;
}

h3 {
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.15px;
}

/* Material Design Input Fields */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 16px;
}

input[type="text"],
input[type="password"] {
  padding: 16px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: transparent;
  color: var(--text-primary);
  font-size: 16px;
  font-family: 'Roboto', sans-serif;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

input[type="text"]:hover,
input[type="password"]:hover {
  border-color: var(--text-primary);
}

input[type="text"]:focus,
input[type="password"]:focus {
  border-color: var(--md-primary);
  border-width: 2px;
  padding: 15px 11px;
}

input[type="text"]::placeholder,
input[type="password"]::placeholder {
  color: var(--text-disabled);
}

.help-text {
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.4px;
  margin-top: 4px;
}

/* Material Design Buttons */
.btn {
  padding: 10px 24px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.25px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Roboto', sans-serif;
  position: relative;
  overflow: hidden;
  min-width: 64px;
  height: 36px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: var(--hover-overlay);
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:active {
  transform: scale(0.98);
}

/* フォーカス状態のアクセシビリティ対応 */
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.4);
}

.btn:focus:not(:focus-visible) {
  box-shadow: var(--shadow-2);
}

.btn:focus-visible {
  outline: 3px solid var(--md-primary);
  outline-offset: 2px;
}

/* ボタンの無効状態 */
.btn:disabled,
.btn[disabled] {
  opacity: 0.38;
  cursor: not-allowed;
  pointer-events: none;
  background: var(--text-disabled);
  color: var(--text-primary);
}

.btn-primary:disabled,
.btn-primary[disabled] {
  background: rgba(0, 0, 0, 0.12);
  color: rgba(0, 0, 0, 0.26);
  box-shadow: none;
}

body.dark-mode .btn-primary:disabled,
body.dark-mode .btn-primary[disabled] {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.3);
}

.btn-primary {
  background: var(--md-primary);
  color: white;
  box-shadow: var(--shadow-2);
}

.btn-primary:hover {
  background: var(--md-primary-dark);
  box-shadow: var(--shadow-4);
}

.btn-primary:focus {
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.5), var(--shadow-2);
}

.btn-primary:active {
  background: var(--md-primary-dark);
}

.btn-secondary {
  background: transparent;
  color: var(--md-primary);
  border: 1px solid var(--border-color);
}

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

.btn-secondary:focus {
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.3);
  border-color: var(--md-primary);
}

.btn-danger {
  background: var(--danger-color);
  color: white;
  box-shadow: var(--shadow-2);
}

.btn-danger:hover {
  background: #d32f2f;
  box-shadow: var(--shadow-4);
}

.btn-danger:focus {
  box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.4), var(--shadow-2);
}

.btn-control {
  background: var(--success-color);
  color: white;
  flex: 1;
  box-shadow: var(--shadow-2);
}

.btn-control:hover {
  background: #43a047;
  box-shadow: var(--shadow-4);
}

.btn-control:focus {
  box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.4), var(--shadow-2);
}

.btn-control.muted {
  background: var(--warning-color);
  color: rgba(0, 0, 0, 0.87);
}

.btn-control.muted:hover {
  background: #fb8c00;
}

.btn-control.muted:focus {
  box-shadow: 0 0 0 3px rgba(255, 152, 0, 0.4), var(--shadow-2);
}

.btn-small {
  min-width: 48px;
  height: 32px;
  padding: 6px 16px;
  font-size: 13px;
}

/* アイコンボタン */
.btn .material-icons {
  font-size: 18px;
  margin-right: 8px;
}

.btn-small .material-icons {
  font-size: 16px;
  margin-right: 4px;
}

/* ルーム情報 */
.room-info {
  margin-bottom: 20px;
  padding: 15px;
  background: var(--status-bg);
  border-radius: 5px;
  border-left: 4px solid var(--primary-color);
}

.room-info h2 {
  margin-bottom: 5px;
  font-size: 1.3rem;
}

.room-info p {
  color: var(--text-secondary);
  margin: 0;
}

/* ステータス - Material Design */
.call-status {
  text-align: center;
  margin-bottom: 24px;
}

.status-disconnected,
.status-connected {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 16px;
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.25px;
}

.status-disconnected {
  background: rgba(255, 152, 0, 0.12);
  color: var(--warning-color);
}

.status-connected {
  background: rgba(76, 175, 80, 0.12);
  color: var(--success-color);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-disconnected .status-dot {
  background: var(--warning-color);
}

.status-connected .status-dot {
  background: var(--success-color);
}
  background: var(--success-color);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* コントロール */
.controls {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
}

/* 参加者リスト */
.participants {
  margin-top: 20px;
  padding: 15px;
  background: var(--status-bg);
  border-radius: 5px;
  border: 1px solid var(--border-color);
}

#participants-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ログエリア */
.log-section {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.log-area {
  background: var(--bg-main);
  padding: 15px;
  border-radius: 5px;
  height: 200px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
}

.log-entry {
  padding: 5px;
  margin-bottom: 5px;
  border-radius: 3px;
}

.log-info {
  color: var(--text-secondary);
}

.log-success {
  color: var(--success-color);
}

.log-warning {
  color: var(--warning-color);
}

.log-error {
  color: var(--danger-color);
}

/* リンクスタイル */
a {
  color: var(--link-color);
  text-decoration: none;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* スクロールバーのスタイル */
.log-area::-webkit-scrollbar {
  width: 8px;
}

.log-area::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 5px;
}

.log-area::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 5px;
}

.log-area::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* レスポンシブデザイン */
@media (max-width: 600px) {
  .container {
    padding: 10px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .section {
    padding: 20px;
  }

  .controls {
    flex-direction: column;
  }

  .btn-control {
    width: 100%;
  }
  
  .theme-toggle {
    top: 10px;
    right: 10px;
    padding: 8px 16px;
    font-size: 1rem;
  }
}