/* ===========================================================
   CPS 导航站 · 前台样式
   复刻 Hyper「creative」主题观感（浅色 / 深色双模式）
   =========================================================== */

:root {
  --primary: #3688fc;
  --body-bg: #fafbfe;
  --body-color: #6c757d;
  --heading-color: #313a46;
  --card-bg: #ffffff;
  --border: #eef2f7;
  --border-strong: #dee2e6;
  --topbar-bg: #ffffff;
  --shadow: 0 0 35px 0 rgba(154, 161, 171, 0.15);
  --shadow-hover: 0 4px 18px rgba(54, 136, 252, 0.14);
  --radius: 6px;
  --topbar-h: 70px;
  --logo-h: 32px;
}

html[data-theme='dark'] {
  --body-bg: #343a40;
  --body-color: #aab8c5;
  --heading-color: #dce4ec;
  --card-bg: #3a444e;
  --border: #464f5b;
  --border-strong: #4b5663;
  --topbar-bg: #3a444e;
  --shadow: 0 0 35px 0 rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 4px 18px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--body-bg);
  color: var(--body-color);
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC',
    'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  font-size: 0.9375rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: #2a6fd6; }
h1, h2, h3, h4, h5, h6 { color: var(--heading-color); font-weight: 600; line-height: 1.35; }
img { vertical-align: middle; }

.wrapper { min-height: 100%; display: flex; flex-direction: column; }

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding-left: 12px;
  padding-right: 12px;
}

/* ---------------- 顶部栏 ---------------- */
.navbar-custom {
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
}
.topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-topbar { display: block; }
.logo { display: inline-flex; align-items: center; }
.logo img { height: var(--logo-h); width: auto; display: block; }
.logo .logo-sm { display: none; }

.topbar-menu { list-style: none; margin: 0; padding: 0; }
.nav-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--body-color);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.nav-icon-btn:hover { background: rgba(54, 136, 252, 0.1); color: var(--primary); }
.nav-icon-btn .ic { width: 20px; height: 20px; }

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: 0;
  padding: 8px;
  cursor: pointer;
}
.navbar-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--body-color);
  border-radius: 2px;
}

/* ---------------- 主导航 ---------------- */
.topnav {
  background: var(--topbar-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(154, 161, 171, 0.06);
}
.topnav .navbar-nav {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.topnav .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 15px 14px;
  color: var(--body-color);
  font-size: 0.9375rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.topnav .nav-link:hover,
.topnav .nav-link.active { color: var(--primary); border-bottom-color: var(--primary); }
.topnav .nav-link .ic { width: 18px; height: 18px; }

/* ---------------- 内容区 ---------------- */
.content-page { flex: 1 0 auto; display: flex; flex-direction: column; }
.content { flex: 1 0 auto; }
.pt-3 { padding-top: 1rem; }

.card {
  position: relative;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}
.card-body { padding: 1.5rem; }
.header-title {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--heading-color);
}
.cat-ic { display: inline-flex; color: var(--primary); }
.cat-ic .ic { width: 20px; height: 20px; }
.cat-desc { margin: -0.25rem 0 0.75rem; font-size: 0.875rem; }
.card hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0.75rem 0 1rem;
}

.intro-body { color: var(--body-color); }
.intro-body p:first-child { margin-top: 0; }
.intro-body p:last-child { margin-bottom: 0; }
.intro-body ul { padding-left: 1.2rem; }
.intro-body li { margin-bottom: 0.35rem; }
.fs-5 { font-size: 1.0625rem; }
.page-body img { max-width: 100%; height: auto; }

/* ---------------- 栅格 ---------------- */
.row { display: flex; flex-wrap: wrap; margin: 0 -4px; }
.col-12 { width: 100%; }
@media (min-width: 576px) { .col-sm-4 { width: 33.3333%; } }
@media (min-width: 992px) { .col-lg-3 { width: 25%; } }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.py-5 { padding-top: 3rem; padding-bottom: 3rem; }
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.gap-1 { gap: 0.25rem; }
.gap-3 { gap: 1rem; }
.gap-lg-2 { gap: 0.5rem; }
.w-100 { width: 100%; }
.m-0 { margin: 0; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.me-2 { margin-right: 0.5rem; }
.text-center { text-align: center; }
.text-muted { color: var(--body-color); opacity: 0.78; }
.text-danger { color: #fa6767; }
.fw-normal { font-weight: 400; }
.rounded-circle { border-radius: 50%; }
.border { border: 1px solid var(--border); }
.avatar-sm { width: 40px; height: 40px; object-fit: cover; flex: 0 0 40px; }
.avatar-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(54, 136, 252, 0.12);
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
}

/* ---------------- 条目卡片 ---------------- */
.ss-click-hand { cursor: pointer; }
.item-inner {
  border-radius: var(--radius);
  background: var(--card-bg);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  height: 100%;
}
.item:hover .item-inner {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}
.item-text { min-width: 0; }
.item h4 { font-size: 1rem; color: var(--heading-color); display: flex; align-items: center; gap: 6px; }
.ss-two-line {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 3em;
  font-size: 0.875rem;
  line-height: 1.5;
}
.item-badge {
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1;
  padding: 3px 6px;
  border-radius: 4px;
  background: rgba(250, 103, 103, 0.12);
  color: #fa6767;
  white-space: nowrap;
}
.empty-hint { padding: 0.5rem 0 0.25rem; font-size: 0.875rem; }

/* ---------------- 页脚 ---------------- */
.footer {
  padding: 1.25rem 0;
  margin-top: auto;
  font-size: 0.875rem;
  color: var(--body-color);
}
.footer-extra { font-size: 0.8125rem; opacity: 0.75; margin-top: 4px; }

/* ---------------- 弹窗 ---------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1050;
  display: none;
  background: rgba(17, 24, 32, 0.55);
  padding: 16px;
  overflow-y: auto;
}
.modal.show { display: flex; align-items: center; justify-content: center; }
.modal-dialog { width: 100%; max-width: 400px; }
.modal-content {
  background: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  animation: pop 0.18s ease-out;
}
@keyframes pop {
  from { transform: scale(0.96); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 1rem; margin: 0; color: var(--heading-color); }
.btn-close {
  background: transparent;
  border: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--body-color);
  cursor: pointer;
  padding: 0 4px;
}
.btn-close:hover { color: #fa6767; }
.modal-body { padding: 1.25rem; text-align: center; }
.modal-body img { max-width: 100%; border-radius: 6px; }
.modal-body .qr-wrap { display: inline-block; padding: 10px; background: #fff; border-radius: 8px; }
.modal-body .qr-wrap canvas, .modal-body .qr-wrap img { display: block; }
.modal-body p { margin: 0 0 0.75rem; font-size: 0.9375rem; }
.btn-primary {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius);
  background: var(--primary);
  color: #fff !important;
  border: 0;
  cursor: pointer;
  font-size: 0.9375rem;
}
.btn-primary:hover { filter: brightness(0.94); }

/* ---------------- 移动端 ---------------- */
@media (max-width: 991px) {
  .navbar-toggle { display: flex; }
  .topnav { display: none; }
  .topnav.open { display: block; }
  .topnav .navbar-nav { flex-direction: column; padding: 4px 0; }
  .topnav .nav-link { padding: 12px 8px; border-bottom: 1px solid var(--border); }
  .card-body { padding: 1.125rem; }
}
@media (max-width: 575px) {
  .topbar { height: 60px; }
  .fs-5 { font-size: 1rem; }
}