/**
 * ヘルプチャットボット ウィジェット CSS
 * 最小スタイル（右下ボタン + ドロワー）
 */

/* === 変数 === */
.helpchat-widget {
  --helpchat-primary: #2563eb;
  --helpchat-primary-hover: #1d4ed8;
  --helpchat-accent: #38bdf8;
  --helpchat-bg: rgba(255, 255, 255, 0.92);
  --helpchat-bg-secondary: #f8fafc;
  --helpchat-border: rgba(15, 23, 42, 0.12);
  --helpchat-text: #0f172a;
  --helpchat-text-secondary: #475569;
  --helpchat-shadow: 0 20px 60px rgba(15, 23, 42, 0.18);
  --helpchat-radius: 16px;
  --helpchat-font: "Noto Sans JP", "Inter", "Sora", "Avenir Next", sans-serif;
}

/* === コンテナ === */
.helpchat-widget {
  position: fixed;
  inset: 0;
  z-index: 99999;
  font-family: var(--helpchat-font);
  font-size: 14px;
  line-height: 1.5;
  pointer-events: none;
}

/* === トリガーボタン === */
.helpchat-trigger {
  position: absolute;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(140deg, #1d4ed8, #2563eb 55%, #38bdf8);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: grab;
  pointer-events: auto;
  touch-action: none;
}

.helpchat-trigger:hover {
  transform: scale(1.05);
  box-shadow: 0 14px 38px rgba(56, 189, 248, 0.35);
}

.helpchat-trigger:focus {
  outline: 2px solid var(--helpchat-primary);
  outline-offset: 2px;
}

.helpchat-trigger.is-dragging {
  cursor: grabbing;
  transform: scale(1.02);
}

/* === ドロワー === */
.helpchat-drawer {
  position: absolute;
  width: 360px;
  height: 500px;
  max-width: 92vw;
  max-height: 70vh;
  min-width: 280px;
  min-height: 260px;
  background: var(--helpchat-bg);
  border: 1px solid var(--helpchat-border);
  border-radius: var(--helpchat-radius);
  box-shadow: var(--helpchat-shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(10px);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  resize: none;
  pointer-events: auto;
  backdrop-filter: blur(14px);
}

.helpchat-drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

/* === ヘッダ === */
.helpchat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--helpchat-border);
  background: linear-gradient(120deg, rgba(37, 99, 235, 0.14), rgba(56, 189, 248, 0.18));
}

.helpchat-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--helpchat-text);
}

.helpchat-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--helpchat-text-secondary);
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.helpchat-close:hover {
  background: var(--helpchat-border);
  color: var(--helpchat-text);
}

/* === メッセージエリア === */
.helpchat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 120px;
}

/* メッセージバブル */
.helpchat-message {
  max-width: 90%;
  padding: 10px 14px;
  border-radius: 12px;
  line-height: 1.5;
  word-break: break-word;
}

.helpchat-message.bot {
  background: rgba(15, 23, 42, 0.06);
  color: var(--helpchat-text);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.helpchat-message.user {
  background: linear-gradient(135deg, #1d4ed8, #38bdf8);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

/* コンテンツ表示 */
.helpchat-content {
  background: rgba(15, 23, 42, 0.06);
  border-radius: 8px;
  padding: 12px;
  align-self: flex-start;
  max-width: 95%;
}

.helpchat-content-title {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--helpchat-text);
}

.helpchat-content-body {
  white-space: pre-wrap;
  color: var(--helpchat-text-secondary);
  font-size: 13px;
}

.helpchat-content-links {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--helpchat-border);
}

.helpchat-content-links a {
  color: var(--helpchat-primary);
  text-decoration: none;
  font-size: 13px;
}

.helpchat-content-links a:hover {
  text-decoration: underline;
}

/* === 選択肢エリア === */
.helpchat-options {
  padding: 12px;
  border-top: 1px solid var(--helpchat-border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 180px;
  overflow-y: auto;
}

/* 選択肢ボタン */
.helpchat-option {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  color: var(--helpchat-text);
  font-size: 14px;
  transition: background 0.15s, border-color 0.15s, transform 0.15s;
}

.helpchat-option:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.helpchat-option:focus {
  outline: 2px solid var(--helpchat-primary);
  outline-offset: -2px;
}

/* === 入力エリア === */
.helpchat-input-area {
  padding: 12px;
  border-top: 1px solid var(--helpchat-border);
  display: flex;
  gap: 8px;
}

.helpchat-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--helpchat-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--helpchat-text);
  background: rgba(255, 255, 255, 0.9);
}

.helpchat-input:focus {
  outline: none;
  border-color: var(--helpchat-primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.helpchat-send {
  width: 40px;
  height: 40px;
  border: none;
  background: linear-gradient(135deg, #1d4ed8, #38bdf8);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.helpchat-send:hover {
  background: linear-gradient(135deg, #1e40af, #2563eb);
}

/* === ユーティリティ === */
.helpchat-hidden {
  display: none !important;
}

/* === ローディング === */
.helpchat-loading {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  align-self: flex-start;
}

.helpchat-loading span {
  width: 8px;
  height: 8px;
  background: var(--helpchat-text-secondary);
  border-radius: 50%;
  animation: helpchat-bounce 1.4s infinite ease-in-out both;
}

.helpchat-loading span:nth-child(1) { animation-delay: -0.32s; }
.helpchat-loading span:nth-child(2) { animation-delay: -0.16s; }

@keyframes helpchat-bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* === Resize handles === */
.helpchat-resize-handle {
  position: absolute;
  z-index: 5;
  background: transparent;
}

.helpchat-resize-handle[data-resize="n"] {
  top: -6px;
  left: 12px;
  right: 12px;
  height: 12px;
  cursor: n-resize;
}

.helpchat-resize-handle[data-resize="w"] {
  left: -6px;
  top: 12px;
  bottom: 12px;
  width: 12px;
  cursor: w-resize;
}

.helpchat-resize-handle[data-resize="nw"] {
  top: -6px;
  left: -6px;
  width: 16px;
  height: 16px;
  cursor: nw-resize;
}

/* === レスポンシブ === */
@media (max-width: 480px) {
  .helpchat-widget {
    inset: 0;
  }
  
  .helpchat-drawer {
    width: calc(100vw - 20px);
    height: 70vh;
  }
}