/* ========================================
   邮箱系统 - 极简主义样式
======================================== */

:root {
  --black: #000;
  --white: #fff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 6px;
  --transition: 0.2s ease;
}

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

html, body {
  width: 100%;
  height: 100%;
}

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
}

/* ---------- 容器 ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- 头部 ---------- */
.header {
  padding: 24px 0 16px;
}

.header h1 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* ---------- 主区域 ---------- */
.main {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  overflow: hidden;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.section {
  display: none;
  min-height: 0;
}

.section.active {
  display: flex;
  flex: 1;
  flex-direction: column;
}

/* ---------- 工具栏 ---------- */
.toolbar {
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.toolbar-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.toolbar-field span {
  font-size: 12px;
  color: var(--gray-500);
}

.toolbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.search-input {
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  width: 240px;
}

.password-input {
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  width: 140px;
}

.search-input:focus,
.password-input:focus {
  border-color: var(--black);
}

.btn {
  padding: 8px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn:hover {
  background: var(--gray-100);
}

.btn-primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.btn-primary:hover {
  background: var(--gray-800);
}

.btn-danger {
  color: #dc2626;
  border-color: #fecaca;
}

.btn-danger:hover {
  background: #fef2f2;
  border-color: #ef4444;
  color: #ef4444;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

/* ---------- 表格 ---------- */
.table-wrap {
  flex: 1;
  min-height: 0;
  overflow: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.table th,
.table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--gray-100);
  text-align: left;
  vertical-align: middle;
}

.table .check-col {
  width: 56px;
  text-align: center;
}

.table th {
  font-weight: 500;
  color: var(--gray-500);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--gray-50);
  position: sticky;
  top: 0;
  z-index: 1;
}

.table tr:hover td {
  background: var(--gray-50);
}

.table td {
  color: var(--gray-800);
}

.table input[type="checkbox"] {
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 4px;
}

.refresh-token {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}

/* ---------- 空状态 ---------- */
.empty {
  padding: 40px 16px;
  text-align: center;
  color: var(--gray-400);
  font-size: 13px;
}

/* ---------- 分页 ---------- */
.pagination-wrap {
  padding: 12px 16px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.pagination-info {
  font-size: 12px;
  color: var(--gray-500);
}

.pagination {
  display: flex;
  gap: 4px;
}

.pagination button {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover {
  background: var(--gray-100);
}

.pagination button.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.per-page {
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--white);
  cursor: pointer;
}

/* ---------- 邮件列表 ---------- */
.mail-section {
  padding: 16px;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.mail-section h2 {
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.back-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 13px;
  color: var(--gray-500);
  padding: 4px 8px;
}

.back-btn:hover {
  color: var(--black);
}

/* ---------- 模态框 ---------- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal {
  background: var(--white);
  border-radius: var(--radius);
  max-width: 480px;
  width: 100%;
  overflow: hidden;
}

.modal-header {
  padding: 20px;
  border-bottom: 1px solid var(--gray-100);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 500;
}

.modal-body {
  padding: 20px;
  font-size: 14px;
  color: var(--gray-600);
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.mail-modal .modal-body {
  max-height: 50vh;
  overflow-y: auto;
}

.ai-modal .modal {
  max-width: 680px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.ai-modal .modal-body {
  overflow-y: auto;
  flex: 1;
}

.ai-modal .modal-header,
.ai-modal .modal-footer {
  flex-shrink: 0;
}

.ai-content {
  min-height: 100px;
}

.ai-content.streaming::after {
  content: '...';
  animation: blink 1s infinite;
}

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

/* AI 分析卡片样式 */
.ai-analysis-card {
  text-align: left;
}

.ai-status {
  color: #6b7280;
  font-size: 13px;
  margin-bottom: 10px;
}

.ai-status.thinking::after {
  content: "";
  display: inline-block;
  width: 1.5em;
  text-align: left;
  animation: dots 1.2s steps(4, end) infinite;
}

.ai-thinking {
  display: none;
  max-height: 110px;
  overflow-y: auto;
  padding: 12px;
  border-radius: 10px;
  background-color: #fafafa;
  border: 1px dashed #d1d5db;
  color: #6b7280;
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 12px;
  white-space: pre-wrap;
}

.ai-thinking.active {
  display: block;
}

@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75%, 100% { content: "..."; }
}

.ai-summary {
  min-height: 60px;
  max-height: 300px;
  overflow-y: auto;
  padding: 12px;
  border-radius: 8px;
  background-color: #f5f3ff;
  color: #4c1d95;
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 12px;
  white-space: pre-wrap;
  word-break: break-word;
}

.ai-summary.ai-cursor::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1em;
  margin-left: 4px;
  vertical-align: -2px;
  background-color: #7c3aed;
  animation: blink 0.8s steps(2, start) infinite;
}

.ai-details {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.ai-details.ready {
  opacity: 1;
  transform: translateY(0);
}

.ai-field {
  display: flex;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}

.ai-field strong {
  min-width: 60px;
  color: #111827;
}

.ai-suggestion {
  margin-top: 12px;
  padding: 12px;
  border-radius: 8px;
  background-color: #f9fafb;
  color: #374151;
  line-height: 1.6;
  font-size: 14px;
}

.mail-meta {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--gray-100);
}

.mail-meta p {
  margin: 4px 0;
  font-size: 13px;
  color: var(--gray-500);
}

.mail-meta strong {
  color: var(--gray-700);
}

.mail-content {
  font-size: 14px;
  color: var(--gray-700);
  word-break: break-word;
}

.mail-content img {
  max-width: 100%;
}

/* ---------- 导入弹窗 ---------- */
.import-modal .modal-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.upload-box {
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.upload-box:hover,
.upload-box.dragover {
  border-color: var(--black);
  background: var(--gray-50);
}

.upload-box p {
  font-size: 13px;
  color: var(--gray-400);
}

.upload-box input {
  display: none;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
}

.form-group input {
  padding: 8px 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
}

.form-group input:focus {
  border-color: var(--black);
}

/* ---------- Loading ---------- */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.8);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--gray-200);
  border-top-color: var(--black);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Toast ---------- */
.toast {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--gray-900);
  color: var(--white);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 300;
}

/* ---------- 底部 ---------- */
.footer {
  flex-shrink: 0;
  padding: 12px 0 18px;
  text-align: center;
  font-size: 12px;
  color: var(--gray-400);
}

.footer a {
  color: var(--gray-600);
  text-decoration: none;
}

.footer a:hover {
  color: var(--black);
  text-decoration: underline;
}

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  .header {
    padding: 24px 0 16px;
  }

  .header h1 {
    font-size: 18px;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-input {
    width: 100%;
  }

  .toolbar .btn {
    width: 100%;
    justify-content: center;
  }

  .pagination-wrap {
    flex-direction: column;
  }

  .modal {
    max-width: 100%;
    margin: 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
}