/* ===========================================
   PHBS MBA 黑客松 - Dashboard 样式
   深蓝 + 金色 + 白色，与官网保持一致
   =========================================== */

:root {
  --dark-blue: #0A1628;
  --mid-blue: #0F2340;
  --light-blue: #1a3a5c;
  --gold: #C9A84C;
  --gold-light: rgba(201, 168, 76, 0.15);
  --white: #FFFFFF;
  --gray: #8fa8c8;
  --gray-light: #b8cce8;
  --border: rgba(201, 168, 76, 0.2);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 4px 20px rgba(201, 168, 76, 0.15);
  --transition: all 0.3s ease;
  --sidebar-w: 240px;
}

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

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
  background: var(--dark-blue);
  color: var(--white);
  min-height: 100vh;
}

/* ===========================================
   登录页
   =========================================== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dark-blue) 0%, #0d1e35 50%, #0a1628 100%);
  padding: 20px;
}

.login-box {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  text-align: center;
  box-shadow: var(--shadow);
}

.login-box .logo-wrap { margin-bottom: 32px; }
.login-box .logo-wrap img { height: 48px; margin-bottom: 12px; }
.login-box h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; }
.login-box .subtitle { color: var(--gold); font-size: 0.88rem; margin-bottom: 32px; }

.login-tab {
  display: flex;
  background: var(--light-blue);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 28px;
}
.login-tab button {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--gray);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.login-tab button.active {
  background: var(--gold);
  color: var(--dark-blue);
  font-weight: 700;
}

.form-group { margin-bottom: 18px; text-align: left; }
.form-group label { display: block; font-size: 0.82rem; color: var(--gray-light); margin-bottom: 8px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}
.form-group input::placeholder { color: var(--gray); }

.captcha-row { display: flex; gap: 8px; align-items: center; }
.captcha-row input { flex: 1; }
#captcha-canvas { border-radius: 6px; cursor: pointer; border: 1px solid var(--border); flex-shrink: 0; }
.captcha-hint { font-size: 0.75rem; color: var(--gray); margin-top: 4px; display: block; }

.btn-send-code {
  padding: 12px 14px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--gold);
  font-size: 0.82rem;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
  transition: var(--transition);
}
.btn-send-code:hover { border-color: var(--gold); }
.btn-send-code:disabled { opacity: 0.5; cursor: not-allowed; }

.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; }

.form-msg { font-size: 0.85rem; margin-top: 8px; min-height: 18px; }
.form-msg.error { color: #ff6b6b; }
.form-msg.success { color: #69db7c; }

.btn-login {
  width: 100%;
  padding: 14px;
  background: var(--gold);
  color: var(--dark-blue);
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  margin-top: 8px;
}
.btn-login:hover { filter: brightness(1.1); transform: translateY(-1px); }

.login-tip { font-size: 0.8rem; color: var(--gray); margin-top: 16px; line-height: 1.5; }
.login-tip a { color: var(--gold); text-decoration: none; }

/* ===========================================
   Dashboard 整体布局
   =========================================== */
.dashboard { display: flex; min-height: 100vh; }

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-w);
  background: var(--mid-blue);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-logo {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.sidebar-logo img { height: 36px; margin-bottom: 8px; }
.sidebar-logo .site-name { font-size: 0.85rem; font-weight: 700; color: var(--gold); }
.sidebar-logo .site-sub { font-size: 0.72rem; color: var(--gray); margin-top: 2px; }

.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.nav-section { margin-bottom: 20px; }
.nav-section-title { font-size: 0.7rem; font-weight: 700; color: var(--gray); letter-spacing: 0.1em; text-transform: uppercase; padding: 0 8px; margin-bottom: 6px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--gray-light);
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 2px;
  user-select: none;
  border: 1px solid transparent;
}
.nav-item:hover { background: var(--light-blue); color: var(--white); }
.nav-item.active {
  background: var(--gold-light);
  color: var(--gold);
  border-color: rgba(201, 168, 76, 0.3);
  font-weight: 600;
}
.nav-item .icon { font-size: 1.1rem; width: 20px; text-align: center; }
.nav-item .badge {
  margin-left: auto;
  background: var(--gold);
  color: var(--dark-blue);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
}

.sidebar-footer { padding: 16px 12px; border-top: 1px solid var(--border); }
.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--light-blue);
  border-radius: 10px;
  margin-bottom: 10px;
}
.user-avatar {
  width: 36px; height: 36px;
  background: var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.85rem;
  color: var(--dark-blue);
  flex-shrink: 0;
}
.user-info { flex: 1; overflow: hidden; }
.user-name { font-size: 0.88rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-team { font-size: 0.75rem; color: var(--gray); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.btn-logout {
  width: 100%;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--gray-light);
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.btn-logout:hover { border-color: #ff6b6b; color: #ff6b6b; }

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  background: var(--dark-blue);
}

.page-header {
  background: var(--mid-blue);
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.page-title { font-size: 1.2rem; font-weight: 700; }
.page-subtitle { font-size: 0.82rem; color: var(--gray); margin-top: 2px; }
.page-actions { display: flex; gap: 12px; align-items: center; }

.btn {
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-gold { background: var(--gold); color: var(--dark-blue); }
.btn-gold:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--gray-light); }
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-danger { background: #ff6b6b; color: white; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* 内容区域 */
.page-body { padding: 28px 32px; }

/* ===========================================
   点子大厅
   =========================================== */
.team-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.filter-chip {
  padding: 7px 16px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--gray-light);
  cursor: pointer;
  transition: var(--transition);
}
.filter-chip.active, .filter-chip:hover {
  background: var(--gold-light);
  border-color: var(--gold);
  color: var(--gold);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.team-card {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  transition: var(--transition);
  cursor: pointer;
}
.team-card:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-gold);
  transform: translateY(-3px);
}
.team-card-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 16px; }
.team-icon {
  width: 48px; height: 48px;
  background: var(--gold-light);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}
.team-card-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
.team-card-team { font-size: 0.82rem; color: var(--gold); }
.team-card-desc { font-size: 0.88rem; color: var(--gray); line-height: 1.6; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.team-card-footer { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; border-top: 1px solid var(--border); }
.team-card-time { font-size: 0.75rem; color: var(--gray); }
.team-card-link { font-size: 0.82rem; color: var(--gold); font-weight: 600; text-decoration: none; display: flex; align-items: center; gap: 4px; }
.team-card-link:hover { text-decoration: underline; }

/* 状态标签 */
.team-status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.team-status.status-active {
  background: rgba(220, 53, 69, 0.2);
  color: #dc3545;
  border: 1px solid rgba(220, 53, 69, 0.4);
}
.team-status.status-done {
  background: rgba(40, 167, 69, 0.2);
  color: #28a745;
  border: 1px solid rgba(40, 167, 69, 0.4);
}
.team-card-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.team-card-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
}
.team-card-project {
  font-size: 0.85rem;
  color: var(--gold);
  margin-top: 6px;
}

/* 项目详情页 */
.detail-section {
  margin-bottom: 24px;
}
.detail-section h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gold);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.detail-section p {
  color: var(--gray-light);
  line-height: 1.7;
  font-size: 0.95rem;
}
.member-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.member-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--light-blue);
  padding: 10px 14px;
  border-radius: 10px;
}
.member-avatar {
  width: 36px;
  height: 36px;
  background: var(--gold-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
}
.member-name {
  font-weight: 600;
  font-size: 0.9rem;
}
.member-title {
  font-size: 0.8rem;
  color: var(--gray);
}
.detail-section .file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background: var(--light-blue);
  border-radius: 8px;
  margin-bottom: 8px;
  color: var(--gray-light);
}

/* ===========================================
   上传页面
   =========================================== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 16px;
  padding: 48px 32px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--mid-blue);
  margin-bottom: 24px;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--gold);
  background: var(--gold-light);
}
.upload-zone .icon { font-size: 3rem; margin-bottom: 12px; }
.upload-zone h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.upload-zone p { font-size: 0.85rem; color: var(--gray); }
.upload-zone .hint { font-size: 0.75rem; color: var(--gray); margin-top: 12px; }
.upload-zone input[type=file] { display: none; }

.file-type-tabs { display: flex; gap: 12px; margin-bottom: 20px; }
.file-tab {
  padding: 8px 20px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--gray-light);
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: inherit;
}
.file-tab.active { background: var(--gold); color: var(--dark-blue); font-weight: 700; }

.upload-list { margin-top: 24px; }
.upload-list-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 14px; color: var(--gray-light); }

.file-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  transition: var(--transition);
}
.file-item:hover { border-color: rgba(201, 168, 76, 0.3); }
.file-icon { font-size: 1.5rem; flex-shrink: 0; }
.file-info { flex: 1; overflow: hidden; }
.file-name { font-size: 0.88rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-meta { font-size: 0.75rem; color: var(--gray); margin-top: 2px; }
.file-actions { display: flex; gap: 8px; }
.file-actions .btn { padding: 6px 12px; font-size: 0.78rem; }
.file-progress { height: 4px; background: var(--border); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.file-progress-bar { height: 100%; background: var(--gold); border-radius: 2px; transition: width 0.3s ease; }

/* ===========================================
   项目详情页
   =========================================== */
.project-header { margin-bottom: 32px; }
.project-title-wrap { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.project-title { font-size: 1.6rem; font-weight: 800; }
.back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--gray-light);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  font-family: inherit;
}
.back-btn:hover { border-color: var(--gold); color: var(--gold); }
.project-meta { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 10px; }
.project-meta-item { font-size: 0.82rem; color: var(--gray); }
.project-meta-item span { color: var(--gold); font-weight: 600; }

.project-section { margin-bottom: 36px; }
.project-section-title { font-size: 1rem; font-weight: 700; color: var(--gold); margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.project-desc { font-size: 0.92rem; color: var(--gray-light); line-height: 1.8; }

.team-members { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.member-card {
  display: flex; align-items: center; gap: 12px;
  padding: 14px;
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.member-avatar {
  width: 40px; height: 40px;
  background: var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.85rem; color: var(--dark-blue);
  flex-shrink: 0;
}
.member-name { font-size: 0.88rem; font-weight: 600; }
.member-role { font-size: 0.75rem; color: var(--gray); }

.file-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.file-card {
  padding: 16px;
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: var(--transition);
}
.file-card:hover { border-color: rgba(201, 168, 76, 0.3); }
.file-card-icon { font-size: 2rem; margin-bottom: 10px; }
.file-card-name { font-size: 0.88rem; font-weight: 600; margin-bottom: 4px; word-break: break-all; }
.file-card-size { font-size: 0.75rem; color: var(--gray); margin-bottom: 12px; }
.file-card-actions { display: flex; gap: 8px; }

/* 视频播放器 */
.video-wrap { position: relative; background: #000; border-radius: 12px; overflow: hidden; margin-bottom: 16px; aspect-ratio: 16/9; }
.video-wrap video { width: 100%; height: 100%; object-fit: contain; }
.image-preview-wrap { display: flex; align-items: center; justify-content: center; background: #f5f5f5; border-radius: 8px; min-height: 200px; }
.image-preview-wrap img { max-width: 100%; max-height: 65vh; object-fit: contain; }
.video-no-download { position: absolute; bottom: 12px; right: 12px; background: rgba(0,0,0,0.6); color: white; font-size: 0.72rem; padding: 4px 8px; border-radius: 4px; pointer-events: none; }

/* ===========================================
   个人信息页
   =========================================== */
.profile-card {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  max-width: 560px;
}
.profile-header { display: flex; align-items: center; gap: 20px; margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.profile-avatar-lg {
  width: 72px; height: 72px;
  background: var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem; font-weight: 800; color: var(--dark-blue);
}
.profile-name { font-size: 1.2rem; font-weight: 700; }
.profile-team { font-size: 0.88rem; color: var(--gold); margin-top: 4px; }
.profile-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 28px; }
.profile-info-item { padding: 14px; background: var(--light-blue); border-radius: 10px; }
.profile-info-label { font-size: 0.75rem; color: var(--gray); margin-bottom: 4px; }
.profile-info-value { font-size: 0.92rem; font-weight: 600; }

.password-form { padding-top: 24px; border-top: 1px solid var(--border); }
.password-form h4 { font-size: 1rem; font-weight: 700; margin-bottom: 20px; }
.password-form .form-group { margin-bottom: 14px; }
.password-form .btn { margin-top: 8px; }

/* ===========================================
   预览 Modal
   =========================================== */
.preview-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.preview-modal.open { display: flex; }
.preview-box {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.preview-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.preview-title { font-size: 0.92rem; font-weight: 600; }
.preview-close { background: none; border: none; color: var(--gray); font-size: 1.5rem; cursor: pointer; padding: 4px 8px; }
.preview-close:hover { color: var(--white); }
.preview-body { flex: 1; overflow-y: auto; padding: 24px; }

/* PDF 预览 */
.pdf-viewer { width: 100%; height: 70vh; border: none; border-radius: 8px; }

/* Markdown 预览 */
.markdown-body { font-size: 0.92rem; line-height: 1.8; color: var(--gray-light); }
.markdown-body h1, .markdown-body h2, .markdown-body h3 { color: var(--white); margin: 1em 0 0.5em; }
.markdown-body p { margin-bottom: 1em; }
.markdown-body code { background: var(--light-blue); padding: 2px 6px; border-radius: 4px; font-size: 0.88em; }
.markdown-body pre { background: var(--light-blue); padding: 16px; border-radius: 8px; overflow-x: auto; margin-bottom: 1em; }

/* ===========================================
   Toast 提示
   =========================================== */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  padding: 12px 20px;
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.88rem;
  color: var(--white);
  box-shadow: var(--shadow);
  animation: toastIn 0.3s ease;
  max-width: 320px;
}
.toast.success { border-color: #69db7c; }
.toast.error { border-color: #ff6b6b; }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ===========================================
   空状态
   =========================================== */
.empty-state { text-align: center; padding: 64px 32px; color: var(--gray); }
.empty-state .icon { font-size: 3.5rem; margin-bottom: 16px; opacity: 0.5; }
.empty-state h3 { font-size: 1.1rem; color: var(--gray-light); margin-bottom: 8px; }
.empty-state p { font-size: 0.88rem; }

/* ===========================================
   滚动条
   =========================================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* ===========================================
   响应式
   =========================================== */
@media (max-width: 1024px) {
  :root { --sidebar-w: 200px; }
  .team-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .page-header { padding: 16px 20px; }
  .page-body { padding: 20px; }
  .team-grid { grid-template-columns: 1fr; }
  .file-grid { grid-template-columns: 1fr; }
  .profile-info-grid { grid-template-columns: 1fr; }
  .mobile-menu-btn { display: flex; }
  .page-title { font-size: 1rem; }
  .project-title { font-size: 1.2rem; }
}

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--white);
  font-size: 1.2rem;
  cursor: pointer;
}

/* ===========================================
   管理功能 - 活动策划、宣传资料、财务记账
   =========================================== */

/* 两栏布局 */
.two-column-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 20px;
}
@media (max-width: 1024px) {
  .two-column-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.left-column, .right-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 文件列表容器 */
.file-list-container {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.file-list-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--gold);
}
.file-list-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.file-list {
  flex: 1;
  overflow-y: auto;
  max-height: 500px;
  padding-right: 8px;
}
.file-list-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray);
}
.file-list-empty .icon {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.5;
}
.file-list-empty .sub {
  font-size: 0.85rem;
  margin-top: 4px;
}

/* 文件网格（宣传资料） */
.file-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.file-grid-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--gray);
}
.file-card {
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.file-card:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.file-card-img {
  position: relative;
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--mid-blue);
  overflow: hidden;
}
.file-card-img-click { cursor: pointer; }
.file-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.file-card-img .file-card-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
}
.file-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 30px 10px 8px;
  color: #fff;
}
.file-card-name {
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-card-size {
  font-size: 0.68rem;
  opacity: 0.8;
  margin-top: 2px;
}
.file-card-doc {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--mid-blue);
}
.file-card-doc-icon { font-size: 1.5rem; }
.file-card-doc-name {
  flex: 1;
  font-size: 0.82rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-card-doc-size {
  font-size: 0.72rem;
  color: var(--gray);
  white-space: nowrap;
}
.file-card-actions {
  padding: 8px 10px;
  display: flex;
  gap: 6px;
  border-top: 1px solid var(--border);
}
.file-card-actions .btn { flex: 1; text-align: center; font-size: 0.75rem; }
@media (max-width: 1024px) {
  .file-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .file-grid { grid-template-columns: 1fr; }
}

/* 两列布局 */
.file-grid-2col {
  grid-template-columns: repeat(2, 1fr) !important;
}
@media (max-width: 600px) {
  .file-grid-2col { grid-template-columns: 1fr !important; }
}

/* 过滤标签 */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-chip {
  padding: 6px 12px;
  background: var(--light-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 0.8rem;
  color: var(--gray-light);
  cursor: pointer;
  transition: var(--transition);
}
.filter-chip.active, .filter-chip:hover {
  background: var(--gold-light);
  border-color: var(--gold);
  color: var(--gold);
}

/* 财务记账 */
.expense-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
@media (max-width: 768px) {
  .expense-summary {
    grid-template-columns: repeat(2, 1fr);
  }
}
.summary-card {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
}
.summary-label {
  font-size: 0.82rem;
  color: var(--gray);
  margin-bottom: 8px;
}
.summary-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
}

.expense-table-container {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.expense-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.expense-table thead {
  background: var(--light-blue);
  border-bottom: 2px solid var(--border);
}
.expense-table th {
  padding: 16px 20px;
  text-align: left;
  font-weight: 600;
  color: var(--gray-light);
}
.expense-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.expense-table tbody tr:hover {
  background: var(--light-blue);
}
.expense-table td {
  padding: 16px 20px;
  color: var(--gray-light);
}
.expense-table .amount {
  font-weight: 700;
  color: var(--gold);
}
.expense-table .status {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.status-pending {
  background: rgba(255, 193, 7, 0.2);
  color: #ffc107;
  border: 1px solid rgba(255, 193, 7, 0.4);
}
.status-reimbursed {
  background: rgba(40, 167, 69, 0.2);
  color: #28a745;
  border: 1px solid rgba(40, 167, 69, 0.4);
}
.expense-table .actions {
  display: flex;
  gap: 8px;
}
.empty-row td {
  padding: 60px 20px;
  text-align: center;
}
.empty-state .icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  opacity: 0.5;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal.open {
  display: flex;
}
.modal-box {
  background: var(--mid-blue);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-title {
  font-size: 1rem;
  font-weight: 700;
}
.modal-close {
  background: none;
  border: none;
  color: var(--gray);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px 8px;
}
.modal-close:hover {
  color: var(--white);
}
.modal-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}
.proof-info {
  background: var(--light-blue);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 20px;
  font-size: 0.9rem;
}
.proof-info div {
  margin-bottom: 8px;
}
.proof-info strong {
  color: var(--gold);
}
.upload-zone.small {
  padding: 30px 20px;
  margin-bottom: 20px;
}
.upload-zone.small .icon {
  font-size: 2rem;
}
.upload-zone.small h4 {
  font-size: 1rem;
}
.proof-list {
  margin-top: 20px;
}
.proof-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--light-blue);
  border-radius: 10px;
  margin-bottom: 10px;
}
.proof-icon {
  font-size: 1.5rem;
}
.proof-name {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 600;
}
.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}