/* ===================================================
   PHP Uploader Ver.2.0 - レスポンシブ対応CSS
   ================================================= */

/* モバイル対応のカード型レイアウト */
@media (max-width: 768px) {
  /* テーブル表示を隠してカード表示に切り替え */
  .file-table-container {
    display: none !important;
  }
  
  .file-cards-container {
    display: block !important;
  }
  
  /* アップロードフォームの調整 */
  .upload-form .row .col-sm-6 {
    margin-bottom: 15px;
  }
  
  .upload-form .col-sm-offset-10 {
    margin-left: 0 !important;
    width: 100% !important;
  }
  
  .upload-form .btn-submit {
    width: 100%;
    margin-top: 10px;
  }
}

@media (min-width: 769px) {
  /* デスクトップ表示時はカードを隠してテーブル表示 */
  .file-table-container {
    display: block !important;
  }
  
  .file-cards-container {
    display: none !important;
  }
}

/* ===================================================
   カード型レイアウトのスタイル
   ================================================= */

.file-cards-container {
  display: none; /* デフォルトは非表示 */
  margin-top: 20px;
}

.file-card {
  background: #fff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: all 0.3s ease;
}

.file-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transform: translateY(-2px);
}

.file-card__header {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  padding: 16px;
  border-bottom: 1px solid #e9ecef;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.file-card__header:hover {
  background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
}

.file-card__main-info {
  flex: 1;
  min-width: 0;
}

.file-card__filename {
  font-size: 16px;
  font-weight: 600;
  color: #007bff;
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
  word-wrap: break-word;
  transition: color 0.2s ease;
}

.file-card__filename:hover {
  color: #0056b3;
  text-decoration: none;
}

.file-card__comment {
  font-size: 14px;
  color: #6c757d;
  margin: 0;
  word-wrap: break-word;
  line-height: 1.4;
}

.file-card__comment:empty:before {
  content: "コメントなし";
  color: #adb5bd;
  font-style: italic;
}

.file-card__toggle {
  background: none;
  border: none;
  color: #6c757d;
  font-size: 18px;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all 0.3s ease;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-card__toggle:hover {
  background: rgba(0,123,255,0.1);
  color: #007bff;
}

.file-card__toggle.expanded {
  transform: rotate(180deg);
  color: #007bff;
}

.file-card__details {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  background: #fff;
}

.file-card__details.expanded {
  max-height: 300px;
  padding: 20px;
}

.file-card__detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 20px;
}

.file-card__detail-item {
  display: flex;
  flex-direction: column;
}

.file-card__detail-label {
  font-size: 12px;
  font-weight: 500;
  color: #6c757d;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.file-card__detail-value {
  font-size: 14px;
  color: #212529;
  font-weight: 500;
}

.file-card__detail-value--size {
  font-family: 'Courier New', monospace;
  color: #28a745;
}

.file-card__detail-value--date {
  font-size: 13px;
  color: #6c757d;
}

.file-card__detail-value--count {
  background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
  color: #1976d2;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
  min-width: 24px;
  text-align: center;
}

.file-card__actions {
  display: flex;
  gap: 10px;
  padding-top: 15px;
  border-top: 1px solid #f1f3f4;
}

.file-card__action-btn {
  flex: 1;
  background: #fff;
  border: 2px solid #007bff;
  color: #007bff;
  padding: 10px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-card__action-btn:hover {
  background: #007bff;
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0,123,255,0.3);
}

.file-card__action-btn--delete {
  border-color: #dc3545;
  color: #dc3545;
}

.file-card__action-btn--delete:hover {
  background: #dc3545;
  color: #fff;
  box-shadow: 0 4px 8px rgba(220,53,69,0.3);
}

/* ===================================================
   アップロードフォームの改善
   ================================================= */

.upload-form {
  margin-bottom: 30px;
}

.upload-form .form-section {
  margin-bottom: 20px;
}

.upload-form .file-input-group {
  position: relative;
  margin-bottom: 15px;
}

.upload-form .btn-submit {
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  border: none;
  color: #fff;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.upload-form .btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(40,167,69,0.3);
}

/* ===================================================
   ステータスメッセージの改善
   ================================================= */

.status-message {
  margin-bottom: 20px;
  border-radius: 8px;
  padding: 16px 20px;
  border: none;
  font-weight: 500;
  animation: slideDown 0.4s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.status-message.success {
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  color: #155724;
  border-left: 4px solid #28a745;
}

.status-message.error {
  background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
  color: #721c24;
  border-left: 4px solid #dc3545;
}

/* =================================================
   プログレスバーとアップロード表示
   ================================================= */

.upload-progress {
  margin: 20px 0;
  padding: 20px;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 12px;
  border: 1px solid #dee2e6;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.upload-progress h4 {
  margin: 0 0 15px 0;
  color: #495057;
  font-weight: 600;
  text-align: center;
}

.progress {
  height: 20px;
  background: #e9ecef;
  border-radius: 10px;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
  background: linear-gradient(45deg, #28a745, #20c997);
  height: 100%;
  border-radius: 10px;
  transition: width 0.3s ease;
  position: relative;
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.3) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0.3) 75%,
    transparent 75%,
    transparent
  );
  background-size: 20px 20px;
  animation: progress-stripe 1s linear infinite;
}

.progress-bar span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: 600;
  color: #fff;
  font-size: 12px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

@keyframes progress-stripe {
  0% { background-position: 20px 0; }
  100% { background-position: 0 0; }
}

/* エラーコンテナ */
.error-container {
  margin: 20px 0;
  padding: 20px;
  background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
  border: 1px solid #f56565;
  border-radius: 12px;
  color: #c53030;
  box-shadow: 0 2px 10px rgba(245, 101, 101, 0.1);
}

.error-container .panel-heading h4 {
  margin: 0 0 15px 0;
  color: #c53030;
  font-weight: 600;
  text-align: center;
}

.error-container .panel-body {
  color: #c53030;
  font-weight: 500;
}

/* ===================================================
   プログレスバーとエラー表示の改善
   ================================================= */

.upload-progress {
  margin-top: 15px;
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.upload-progress .progress {
  height: 8px;
  border-radius: 4px;
  background: #e9ecef;
  overflow: hidden;
}

.upload-progress .progress-bar {
  background: linear-gradient(90deg, #007bff 0%, #28a745 100%);
  transition: width 0.5s ease;
  border-radius: 4px;
}

.error-container {
  margin-top: 15px;
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  border-left: 4px solid #dc3545;
  box-shadow: 0 2px 8px rgba(220,53,69,0.1);
}

/* ===================================================
   アニメーション効果
   ================================================= */

.fade-in {
  animation: fadeIn 0.5s ease;
}

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

.slide-up {
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}