/* EnergyInsights Design System */

:root {
  --ei-primary:    #1a4480;
  --ei-primary-dk: #12336a;
  --ei-accent:     #f97316;
  --ei-success:    #16a34a;
  --ei-bg:         #f0f4f8;
  --ei-card:       #ffffff;
  --ei-text:       #1e293b;
  --ei-muted:      #64748b;
  --ei-border:     #e2e8f0;
  --ei-shadow:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --ei-shadow-md:  0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);

  /* Typography */
  --ei-font:   "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Heiti SC", sans-serif;
  --ei-fs-xs:  .75rem;   /* ~12px — captions, badge labels */
  --ei-fs-sm:  .8rem;    /* ~13px — filter labels, tags */
  --ei-fs-nav: .9rem;    /* nav links, secondary text */
  --ei-lh:     1.7;      /* body line-height */
}

/* ─── Base ─────────────────────────────────────────────── */
body {
  background-color: var(--ei-bg);
  color: var(--ei-text);
  font-family: var(--ei-font);
  line-height: var(--ei-lh);
}

/* ─── Bootstrap Primary Override ───────────────────────── */
.btn-primary {
  background-color: var(--ei-primary);
  border-color: var(--ei-primary);
}
.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--ei-primary-dk);
  border-color: var(--ei-primary-dk);
}
.btn-outline-primary {
  color: var(--ei-primary);
  border-color: var(--ei-primary);
}
.btn-outline-primary:hover {
  background-color: var(--ei-primary);
  border-color: var(--ei-primary);
}
a { color: var(--ei-primary); }
a:hover { color: var(--ei-primary-dk); }
.text-primary { color: var(--ei-primary) !important; }
.bg-primary { background-color: var(--ei-primary) !important; }
.border-primary { border-color: var(--ei-primary) !important; }

/* ─── Navbar ────────────────────────────────────────────── */
.navbar {
  background-color: var(--ei-card);
  border-bottom: 2px solid var(--ei-primary) !important;
  box-shadow: var(--ei-shadow);
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ei-primary) !important;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
}
.navbar-brand:hover { opacity: .85; }

.nav-link {
  color: var(--ei-text) !important;
  font-size: var(--ei-fs-nav);
  padding: .4rem .75rem !important;
  border-radius: 6px;
  transition: background .15s, color .15s;
}
.nav-link:hover {
  background-color: rgba(26,68,128,.07);
  color: var(--ei-primary) !important;
}
.nav-link.active {
  background-color: rgba(26,68,128,.1);
  color: var(--ei-primary) !important;
  font-weight: 500;
}
.nav-link i { opacity: .8; }

/* ─── Cards ─────────────────────────────────────────────── */
.card {
  border: 1px solid var(--ei-border);
  box-shadow: var(--ei-shadow);
  border-radius: 10px;
  transition: box-shadow .2s, transform .2s;
  background-color: var(--ei-card);
}
.card:hover {
  box-shadow: var(--ei-shadow-md);
  transform: translateY(-1px);
}

/* ─── Page Header ───────────────────────────────────────── */
.page-header {
  background: var(--ei-card);
  border: 1px solid var(--ei-border);
  border-left: 4px solid var(--ei-accent);
  border-radius: 8px;
  padding: .75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  box-shadow: var(--ei-shadow);
}
.page-header i {
  color: var(--ei-accent);
  font-size: 1.3rem;
}
.page-header h5,
.page-header h4,
.page-header h3 {
  margin: 0;
  color: var(--ei-primary);
  font-weight: 600;
}

/* ─── Tables ─────────────────────────────────────────────── */
.table thead th {
  background-color: #eef2f8;
  color: var(--ei-primary);
  font-weight: 600;
  font-size: .85rem;
  border-bottom: 2px solid var(--ei-primary);
}
.table-hover tbody tr:hover {
  background-color: rgba(26,68,128,.04);
}

/* ─── Badges ─────────────────────────────────────────────── */
.badge.bg-success { background-color: var(--ei-success) !important; }

/* ─── Buttons ─────────────────────────────────────────────── */
.btn { border-radius: 6px; }
.btn-sm { font-size: .8rem; }

/* ─── Form controls ──────────────────────────────────────── */
.form-control:focus,
.form-select:focus {
  border-color: var(--ei-primary);
  box-shadow: 0 0 0 .2rem rgba(26,68,128,.2);
}

/* ─── Footer ─────────────────────────────────────────────── */
footer.site-footer {
  color: var(--ei-muted);
  font-size: var(--ei-fs-sm);
  border-top: 1px solid var(--ei-border) !important;
}
footer.site-footer a {
  color: var(--ei-muted);
  text-decoration: none;
}
footer.site-footer a:hover {
  color: var(--ei-primary);
}
footer.site-footer .footer-logo i {
  color: var(--ei-accent);
}

/* ─── About Hero ─────────────────────────────────────────── */
.about-hero {
  border-radius: 12px;
  overflow: hidden;
  padding: 3rem 2rem;
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
  background:
    linear-gradient(135deg, rgba(26,68,128,.55) 0%, rgba(14,165,233,.4) 100%),
    url("/static/images/background.webp") center/cover no-repeat;
}
.about-hero h2 {
  color: #fff;
  font-weight: 700;
  margin-bottom: .5rem;
}
.about-hero p {
  color: rgba(255,255,255,.85);
  margin: 0;
  font-size: .95rem;
}
.about-hero .hero-icon {
  font-size: 2.8rem;
  color: var(--ei-accent);
  margin-bottom: .75rem;
  display: block;
}

/* vision cards upgrade */
.vision-card {
  background: var(--ei-card);
  border: 1px solid var(--ei-border);
  border-left: 4px solid var(--ei-primary) !important;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  box-shadow: var(--ei-shadow);
  margin-bottom: 1rem !important;
}
.vision-card .vision-icon {
  font-size: 1.4rem;
  color: var(--ei-primary);
  margin-right: .5rem;
}
.vision-card .fw-semibold { color: var(--ei-primary); }

/* ─── Index Hero ─────────────────────────────────────────── */
.index-hero {
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(26,68,128,.50) 0%, rgba(14,165,233,.35) 100%),
    url("/static/images/hero_bg.webp") center/cover no-repeat;
  border: none;
  margin-bottom: 2rem;
}
.index-hero h1 {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .35rem;
}
.index-hero p {
  color: rgba(255,255,255,.85);
  margin: 0;
  font-size: .9rem;
}
.index-hero .hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ei-primary);
  color: #fff;
  border-radius: 20px;
  padding: .25rem .85rem;
  font-size: .78rem;
  font-weight: 500;
  margin-bottom: 1rem;
}
.index-hero .hero-badge i {
  color: var(--ei-accent);
}

/* card title icons */
.card-title i {
  color: var(--ei-accent);
  margin-right: .4rem;
}

/* ─── Alerts ─────────────────────────────────────────────── */
.alert-info {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  color: var(--ei-primary);
}

/* ─── Dropdown menu ──────────────────────────────────────── */
.dropdown-item i { color: var(--ei-muted); }
.dropdown-item:hover i { color: var(--ei-primary); }
.dropdown-item.active,
.dropdown-item:active {
  background-color: var(--ei-primary);
}

/* ─── Pagination ─────────────────────────────────────────── */
.page-link {
  color: var(--ei-primary);
}
.page-item.active .page-link {
  background-color: var(--ei-primary);
  border-color: var(--ei-primary);
}

/* ─── Tender Filter Pills ───────────────────────────────── */
.filter-card-tender { background:#fff; border:none; border-radius:12px; box-shadow:0 1px 6px rgba(0,0,0,.08); }
.filter-row { display:flex; align-items:flex-start; gap:10px; padding:4px 0; flex-wrap:wrap; }
.filter-label { font-size:var(--ei-fs-sm); color:var(--ei-muted); font-weight:600; white-space:nowrap; padding-top:5px; min-width:32px; }
.filter-divider { height:1px; background:var(--ei-border); margin:10px 0; }
.pill-list { display:flex; flex-wrap:wrap; gap:8px; flex:1; }
.filter-pill { display:inline-block; padding:4px 14px; border-radius:999px; border:1px solid var(--ei-border); font-size:var(--ei-fs-sm); cursor:pointer; background:#fff; color:var(--ei-text); user-select:none; transition:all .15s; line-height:1.6; }
.filter-pill:hover { border-color:var(--ei-primary); color:var(--ei-primary); }
.filter-pill.active { background:var(--ei-primary); border-color:var(--ei-primary); color:#fff; }
.region-pill { background:#f0f4fa; border-color:#b0c4de; font-weight:500; }
.region-pill.active { background:var(--ei-primary); border-color:var(--ei-primary); color:#fff; }
.country-subrow { padding-left:24px; border-left:3px solid var(--ei-primary); margin-top:6px; }
.category-toggle-row { cursor:pointer; }
.category-toggle-text { font-size:var(--ei-fs-sm); color:var(--ei-primary); display:flex; align-items:center; gap:4px; }
.category-body { margin-top:10px; padding-top:10px; border-top:1px solid var(--ei-border); }
.category-search-input { width:100%; height:32px; padding:0 12px; border:1px solid var(--ei-border); border-radius:16px; font-size:var(--ei-fs-sm); background:#fafafa; margin-bottom:10px; box-sizing:border-box; outline:none; }
.chip-list { display:flex; flex-wrap:wrap; gap:8px; }
.filter-chip { display:inline-block; padding:4px 12px; border-radius:999px; border:1px solid var(--ei-border); font-size:var(--ei-fs-xs); cursor:pointer; background:#fff; color:var(--ei-text); user-select:none; transition:all .15s; }
.filter-chip:hover { border-color:var(--ei-primary); color:var(--ei-primary); }
.filter-chip.chip-selected { background:var(--ei-primary); border-color:var(--ei-primary); color:#fff; }
.chip-empty { font-size:var(--ei-fs-sm); color:var(--ei-muted); padding:8px 0; }

/* ─── Tender Card Header ─────────────────────────────────── */
.ei-card-header {
  background: var(--ei-card);
  color: var(--ei-primary);
  font-weight: 600;
  border-left: 4px solid var(--ei-primary);
  padding: .6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ei-card-header.accent  { border-left-color: var(--ei-accent); }
.ei-card-header.success { border-left-color: var(--ei-success); }
.ei-card-header.muted   { border-left-color: var(--ei-muted); color: var(--ei-muted); }

/* ─── 宽屏优化 ───────────────────────────────────────────── */
body.container {
  max-width: 1600px;
}

/* ─── IM 即时通讯界面 ─────────────────────────────────── */
.im-shell {
  display: flex;
  height: calc(100vh - 120px);
  min-height: 400px;
  background: var(--ei-card);
  border: 1px solid var(--ei-border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--ei-shadow);
}

/* 左栏 */
.im-sidebar {
  width: 300px;
  flex-shrink: 0;
  border-right: 1px solid var(--ei-border);
  display: flex;
  flex-direction: column;
  background: #fafbfc;
}
.im-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--ei-border);
}
.im-search-wrap { padding: 8px 12px; border-bottom: 1px solid var(--ei-border); }
.im-conv-list { flex: 1; overflow-y: auto; }
.im-conv-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid var(--ei-border);
  transition: background .12s;
}
.im-conv-item:hover { background: #f0f4f8; }
.im-conv-item.active { background: #e8effa; }
.im-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--ei-border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1.1rem;
}
.im-avatar-letter {
  font-weight: 700; color: var(--ei-primary); font-size: .95rem;
}
.im-conv-info { flex: 1; min-width: 0; }
.im-conv-name { font-size: var(--ei-fs-nav); font-weight: 600; }
.im-conv-preview { font-size: var(--ei-fs-sm); max-width: 160px; display: inline-block; }
.im-conv-time { font-size: var(--ei-fs-xs); color: var(--ei-muted); white-space: nowrap; }
.im-unread-badge {
  background: #e53e3e; color: #fff;
  font-size: var(--ei-fs-xs); font-weight: 700;
  border-radius: 999px; padding: 1px 6px;
  min-width: 18px; text-align: center;
  flex-shrink: 0;
}

/* 右栏 */
.im-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.im-chat-placeholder {
  flex: 1;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.im-chat-body { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.im-chat-header {
  display: flex; align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--ei-border);
  background: #fafbfc;
  flex-shrink: 0;
}
.im-messages {
  flex: 1; overflow-y: auto;
  padding: 16px 20px;
  display: flex; flex-direction: column; gap: 4px;
}
.im-bubble-wrap {
  display: flex;
  margin-bottom: 2px;
}
.im-bubble-wrap.mine { justify-content: flex-end; }
.im-bubble-wrap.theirs { justify-content: flex-start; }
.im-bubble {
  max-width: 65%;
  padding: 8px 14px;
  border-radius: 18px;
  font-size: var(--ei-fs-nav);
  line-height: 1.5;
  word-break: break-word;
  white-space: pre-wrap;
}
.mine .im-bubble {
  background: var(--ei-primary);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.theirs .im-bubble {
  background: #f0f4f8;
  color: var(--ei-text);
  border-bottom-left-radius: 4px;
  border: 1px solid var(--ei-border);
}
.im-bubble-system {
  text-align: center;
  font-size: var(--ei-fs-sm);
  color: var(--ei-muted);
  font-style: italic;
  margin: 6px auto;
  padding: 4px 16px;
  background: #f8f9fa;
  border-radius: 12px;
  max-width: 80%;
}
.im-timestamp {
  text-align: center;
  font-size: var(--ei-fs-xs);
  color: var(--ei-muted);
  margin: 10px 0 6px;
  user-select: none;
}
.im-input-area {
  display: flex; align-items: flex-end;
  padding: 10px 16px;
  border-top: 1px solid var(--ei-border);
  background: var(--ei-card);
  flex-shrink: 0;
}
.im-input-area textarea {
  resize: none; overflow-y: auto;
  min-height: 38px; max-height: 120px;
  border-radius: 18px;
  padding: 8px 14px;
  font-size: var(--ei-fs-nav);
}
.im-load-more { flex-shrink: 0; }
.im-empty { color: var(--ei-muted); }

/* ─── IM 气泡头像 ─────────────────────────────────────── */
.im-avatar-img { width:40px; height:40px; border-radius:50%; object-fit:cover; }
.im-bubble-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  object-fit: cover; flex-shrink: 0; align-self: flex-end; margin-right: 6px;
}
.im-bubble-avatar-letter {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--ei-border); font-size: .75rem; font-weight: 700;
  color: var(--ei-primary);
}

/* IM 气泡内链接 */
.mine .im-bubble a { color: #cce0ff; }
.theirs .im-bubble a { color: var(--ei-primary); }
.im-bubble-system a { color: #1a4480; }

/* ─── IM 右侧浮动面板 ─────────────────────────────────── */
#ei-im-backdrop {
  position: fixed; inset: 0; z-index: 1049;
  background: rgba(0,0,0,.25);
  display: none;
  cursor: pointer;
}
#ei-im-backdrop.open { display: block; }

#ei-im-panel {
  position: fixed; right: 0; top: 0; bottom: 0;
  width: 780px; max-width: 100vw; z-index: 1050;
  box-shadow: -4px 0 24px rgba(0,0,0,.18);
  transform: translateX(110%);
  transition: transform .25s ease;
  background: var(--ei-card);
  display: flex; flex-direction: column;
}
#ei-im-panel.open { transform: translateX(0); }

#ei-im-panel .im-shell {
  height: 100%; border-radius: 0;
  border: none; box-shadow: none;
}
#ei-im-panel .im-sidebar { width: 260px; }

.im-panel-close {
  position: absolute; top: 8px; right: 10px; z-index: 10;
  background: none; border: none; font-size: 1.1rem; line-height: 1;
  color: var(--ei-muted); cursor: pointer; padding: 4px 6px; border-radius: 4px;
}
.im-panel-close:hover { color: var(--ei-text); background: var(--ei-border); }

/* 移动端：单栏切换（默认显示会话列表，chat-open 时显示聊天区） */
@media (max-width: 991.98px) {
  #ei-im-panel { width: 100vw; }
  #ei-im-panel .im-sidebar { width: 100%; border-right: none; }
  #ei-im-panel .im-chat { display: none; }
  #ei-im-panel.chat-open .im-sidebar { display: none; }
  #ei-im-panel.chat-open .im-chat { display: flex; }
  #ei-im-panel .im-conv-preview { max-width: none; flex: 1; min-width: 0; }
}