/* ======================================================
   twiworker — モダンUIスタイル
   ====================================================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(30, 41, 59, 0.6);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --accent-glow-strong: rgba(59, 130, 246, 0.3);
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --border: rgba(148, 163, 184, 0.12);
  --border-light: rgba(148, 163, 184, 0.2);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.6);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 240px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Sans", "Noto Sans CJK JP", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* スクロールバー */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.4); }

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ======================================================
   レイアウト
   ====================================================== */

.app-container {
  display: flex;
  min-height: 100vh;
}

/* サイドバー */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-slow);
}

.sidebar-logo {
  font-size: 20px;
  font-weight: 800;
  padding: 8px 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.5px;
}
.sidebar-logo .badge {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  color: white;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
  letter-spacing: 0;
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  margin: 0 0 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
}
.sidebar-status.online { background: var(--success-bg); color: var(--success); }
.sidebar-status.offline { background: var(--error-bg); color: var(--error); }
.sidebar-status .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.sidebar-status.online .dot { background: var(--success); box-shadow: 0 0 8px rgba(34,197,94,0.5); }
.sidebar-status.offline .dot { background: var(--error); box-shadow: 0 0 8px rgba(239,68,68,0.5); }

.nav-list { list-style: none; display: flex; flex-direction: column; gap: 2px; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  position: relative;
}
.nav-item:hover {
  background: var(--bg-glass-hover);
  color: var(--text-primary);
}
.nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
}
.nav-item .icon { font-size: 18px; width: 22px; text-align: center; flex-shrink: 0; }

/* ハンバーガーメニューボタン */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.mobile-menu-btn:hover { background: var(--bg-card); }

/* サイドバーオーバーレイ */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 99;
  opacity: 0;
  transition: opacity var(--transition);
  backdrop-filter: blur(4px);
}

/* メインコンテンツ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 0;
  max-width: 760px;
  min-height: 100vh;
}

.page-content {
  padding: 28px 32px 40px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ======================================================
   ヘッダー
   ====================================================== */

.page-header {
  margin-bottom: 24px;
}
.page-header h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ======================================================
   カード
   ====================================================== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.card-header h3 {
  font-size: 15px;
  font-weight: 700;
}
.card-header h3 .icon { margin-right: 6px; }

/* ======================================================
   統計グリッド
   ====================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  backdrop-filter: blur(12px);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.stat-card .label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.stat-card .value {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.stat-card .value.accent { color: var(--accent); }
.stat-card .value.success { color: var(--success); }

/* ======================================================
   フォーム
   ====================================================== */

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.3px;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: inherit;
  transition: all var(--transition);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(15, 23, 42, 0.8);
}
.form-textarea { min-height: 130px; resize: vertical; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }

.char-count {
  text-align: right;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 500;
}
.char-count.warning { color: var(--warning); }
.char-count.error { color: var(--error); }

/* メディアアップロード */
.media-upload {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  color: var(--text-muted);
  font-size: 14px;
}
.media-upload:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}
.media-upload .icon { font-size: 28px; margin-bottom: 6px; display: block; }
.media-preview {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.media-preview img {
  width: 72px; height: 72px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* ======================================================
   ボタン
   ====================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6366f1);
  color: white;
  box-shadow: 0 2px 12px rgba(59, 130, 246, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-light);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error), #dc2626);
  color: white;
}
.btn-danger:hover { opacity: 0.9; transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover { background: var(--bg-glass-hover); color: var(--text-primary); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }
.btn-block { width: 100%; }

/* ======================================================
   ツイートカード
   ====================================================== */

.tweet-list { display: flex; flex-direction: column; gap: 10px; }

.tweet-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  backdrop-filter: blur(12px);
  transition: all var(--transition);
}
.tweet-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
}

.tweet-card .tweet-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.tweet-card .tweet-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  color: white;
  font-weight: 700;
  flex-shrink: 0;
}
.tweet-card .tweet-user { font-weight: 700; font-size: 14px; line-height: 1.3; }
.tweet-card .tweet-screen-name {
  color: var(--text-muted);
  font-size: 13px;
}
.tweet-card .tweet-text {
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 10px;
  word-wrap: break-word;
  color: var(--text-primary);
}
.tweet-card .tweet-meta {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  font-size: 13px;
}
.tweet-card .tweet-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
  cursor: default;
}
.tweet-card .tweet-meta span:hover { color: var(--text-secondary); }

/* ======================================================
   トースト
   ====================================================== */

.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  min-width: 320px;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  backdrop-filter: blur(20px);
}
.toast.success { border-color: rgba(34, 197, 94, 0.4); }
.toast.error { border-color: rgba(239, 68, 68, 0.4); }
.toast .toast-title { font-weight: 700; font-size: 14px; margin-bottom: 2px; }
.toast .toast-message { color: var(--text-secondary); font-size: 13px; }

@keyframes toastIn {
  from { transform: translateX(100%) scale(0.9); opacity: 0; }
  to { transform: translateX(0) scale(1); opacity: 1; }
}

/* ======================================================
   ローディング
   ====================================================== */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  color: var(--text-muted);
  font-size: 14px;
  gap: 12px;
}
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* スケルトンローディング */
.skeleton {
  background: linear-gradient(90deg,
    var(--bg-card) 25%,
    var(--bg-card-hover) 50%,
    var(--bg-card) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.skeleton-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.skeleton-line { height: 14px; margin-bottom: 10px; border-radius: 4px; }
.skeleton-line:last-child { width: 60%; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; margin-bottom: 12px; }

/* ======================================================
   エラー
   ====================================================== */

.error-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}
.error-state .icon { font-size: 48px; margin-bottom: 16px; display: block; }
.error-state h3 { color: var(--text-primary); margin-bottom: 8px; font-size: 18px; }
.error-state p { font-size: 14px; margin-bottom: 16px; }

/* ======================================================
   スイッチ
   ====================================================== */

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 42px; height: 24px;
  flex-shrink: 0;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border-light);
  border-radius: 24px;
  transition: var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px; width: 18px;
  left: 3px; bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
}
.toggle-switch input:checked + .toggle-slider { background: var(--accent); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(18px); }

/* ======================================================
   アカウント情報カード
   ====================================================== */

.account-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
}
.account-card .avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: white;
  font-weight: 700;
  flex-shrink: 0;
}
.account-card .info { flex: 1; }
.account-card .info .name { font-weight: 700; font-size: 16px; }
.account-card .info .screen-name { color: var(--text-muted); font-size: 14px; }
.account-card .info .description { color: var(--text-secondary); font-size: 13px; margin-top: 4px; }

/* ======================================================
   トレンドアイテム
   ====================================================== */

.trend-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
  cursor: pointer;
  border-radius: var(--radius-sm);
  margin: 0 -8px;
  padding: 12px 8px;
}
.trend-item:last-child { border-bottom: none; }
.trend-item:hover { background: var(--bg-glass-hover); }
.trend-item .rank {
  font-size: 14px; font-weight: 800;
  color: var(--text-muted);
  width: 24px; text-align: center;
  flex-shrink: 0;
}
.trend-item .content { flex: 1; }
.trend-item .content .name { font-weight: 700; font-size: 15px; }
.trend-item .content .count { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* ======================================================
   キーボードショートカットヒント
   ====================================================== */

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 22px;
  padding: 0 6px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  font-family: inherit;
}

.shortcut-hint {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
  backdrop-filter: blur(20px);
  z-index: 50;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}
.shortcut-hint.visible { opacity: 1; }
.shortcut-hint span { display: flex; align-items: center; gap: 4px; }

/* ======================================================
   レスポンシブ
   ====================================================== */

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }

  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-elevated);
  }
  .sidebar-overlay.open {
    display: block;
    opacity: 1;
  }

  .main-content {
    margin-left: 0;
    padding-top: 0;
  }
  .page-content { padding: 20px 16px 100px; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header h1 { font-size: 22px; }
  .shortcut-hint { display: none; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .page-header h1 { font-size: 20px; }
  .page-content { padding: 16px 12px 100px; }
  .card { padding: 16px; }
  .stat-card { padding: 14px 16px; }
}

/* ======================================================
   ページ固有のスタイル
   ====================================================== */

/* 設定ページ: グリッド */
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* DMメッセージ */
.dm-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  backdrop-filter: blur(12px);
  transition: border-color var(--transition);
}

/* スケジュール */
.schedule-empty {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}