/* ============================================================
   Psychology Knowledge Platform (心理学科普) - Main Stylesheet
   ============================================================ */

/* ----- CSS Variables ----- */
:root {
  --color-primary: #1e3a5f;
  --color-primary-light: #2a4d7a;
  --color-primary-dark: #152c4a;
  --color-accent: #3d6b99;
  --color-accent-light: #4a7db3;
  --color-accent-hover: #2d5a85;
  --color-bg: #f5f5f0;
  --color-bg-alt: #f8f8f5;
  --color-white: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-text-inverse: #ffffff;
  --color-border: #e0e0dc;
  --color-border-light: #eeeeea;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-hover: rgba(0, 0, 0, 0.15);
  --color-overlay: rgba(30, 58, 95, 0.6);
  --color-success: #4caf50;
  --color-warning: #ff9800;
  --color-danger: #e74c3c;
  --color-info: #2196f3;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-round: 50%;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 3px var(--color-shadow);
  --shadow-md: 0 2px 8px var(--color-shadow);
  --shadow-lg: 0 4px 16px var(--color-shadow);
  --shadow-hover: 0 6px 20px var(--color-shadow-hover);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --navbar-height: 56px;
  --container-width: 1200px;
  --sidebar-width: 320px;
  --gap: 24px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* ----- Reset / Base ----- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  margin-bottom: 1em;
}

/* ----- Utility ----- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.text-center {
  text-align: center;
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.main-content {
  flex: 1;
  padding-top: var(--navbar-height);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.navbar .container {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 20px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-inverse);
  font-size: 1.2rem;
  font-weight: 700;
  white-space: nowrap;
  flex-shrink: 0;
}

.navbar-brand:hover {
  color: var(--color-text-inverse);
  opacity: 0.9;
}

.navbar-brand img,
.navbar-brand .logo {
  height: 32px;
  width: 32px;
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-inverse);
  background-color: rgba(255, 255, 255, 0.12);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  padding: 0 12px;
  height: 34px;
  transition: all var(--transition-fast);
}

.search-box:focus-within {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

.search-box input {
  background: transparent;
  color: var(--color-text-inverse);
  width: 160px;
  font-size: 0.85rem;
  padding: 0 8px;
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.search-box button {
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  padding: 2px;
  transition: color var(--transition-fast);
}

.search-box button:hover {
  color: var(--color-text-inverse);
}

.login-btn {
  color: var(--color-text-inverse);
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.login-btn:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.8);
  color: var(--color-text-inverse);
}

/* Hamburger Menu */
.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  padding: 2px;
}

.hamburger-menu span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-inverse);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.hamburger-menu.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-primary);
  z-index: 999;
  padding: 20px;
  overflow-y: auto;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav a {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  padding: 12px 16px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-text-inverse);
  background-color: rgba(255, 255, 255, 0.1);
}

.mobile-nav .mobile-search {
  margin: 16px 0;
  padding: 0 4px;
}

.mobile-nav .mobile-search input {
  width: 100%;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  background-color: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-text-inverse);
  font-size: 0.95rem;
}

.mobile-nav .mobile-search input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================================
   HERO CAROUSEL
   ============================================================ */
.hero-carousel {
  position: relative;
  width: 100%;
  height: 420px;
  overflow: hidden;
  background-color: var(--color-primary-dark);
}

.carousel-track {
  display: flex;
  height: 100%;
  transition: transform var(--transition-slow);
}

.carousel-slide {
  position: relative;
  min-width: 100%;
  height: 100%;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-slide .carousel-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(15, 30, 50, 0.85) 0%,
    rgba(15, 30, 50, 0.3) 50%,
    transparent 100%
  );
}

.carousel-slide .carousel-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px;
  color: var(--color-text-inverse);
}

.carousel-slide .carousel-content .carousel-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  margin-bottom: 12px;
}

.carousel-slide .carousel-content h2 {
  font-size: 1.75rem;
  color: var(--color-text-inverse);
  margin-bottom: 10px;
  max-width: 700px;
}

.carousel-slide .carousel-content p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin-bottom: 0;
  line-height: 1.6;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-round);
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  backdrop-filter: blur(4px);
  z-index: 10;
}

.carousel-nav:hover {
  background-color: rgba(255, 255, 255, 0.35);
}

.carousel-nav.prev,
.carousel-nav.carousel-prev {
  left: 20px;
}

.carousel-nav.next,
.carousel-nav.carousel-next {
  right: 20px;
}

.carousel-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.carousel-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background 0.2s;
}

.carousel-dots .dot.active {
  background: #fff;
}

.carousel-slide.active ~ .carousel-slide {
  display: none;
}

.hero-carousel .carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  background-size: cover;
  background-position: center;
}

.carousel-slide:not(.active) {
  display: none;
}

.carousel-slide.active {
  display: block;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 16px 0;
  font-size: 0.85rem;
  color: var(--color-text-lighter);
}

.breadcrumb a {
  color: var(--color-text-light);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb .separator {
  color: var(--color-text-lighter);
  font-size: 0.75rem;
}

.breadcrumb .current {
  color: var(--color-text);
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border-light);
}

.section-header h2 {
  font-size: 1.3rem;
  position: relative;
  padding-left: 14px;
}

.section-header h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.section-header .more-link {
  font-size: 0.85rem;
  color: var(--color-text-lighter);
}

.section-header .more-link:hover {
  color: var(--color-accent);
}

/* ============================================================
   CATEGORY CARDS (Homepage)
   ============================================================ */
.category-section {
  padding: 40px 0 20px;
}

.category-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.category-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border-light);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-accent);
}

.category-card .category-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: var(--radius-lg);
  background-color: rgba(61, 107, 153, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--color-accent);
}

.category-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.category-card p {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 0;
  line-height: 1.5;
}

/* ============================================================
   CONTENT LAYOUT (Main + Sidebar)
   ============================================================ */
.content-layout {
  display: flex;
  gap: var(--gap);
  padding: 30px 0;
  align-items: flex-start;
}

.content-main {
  flex: 1;
  min-width: 0;
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
}

/* ============================================================
   ARTICLE LIST - Horizontal Cards (Homepage 最新文章)
   ============================================================ */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-item {
  display: flex;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.article-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.article-item .article-thumb {
  width: 200px;
  min-height: 150px;
  flex-shrink: 0;
  overflow: hidden;
}

.article-item .article-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.article-item:hover .article-thumb img {
  transform: scale(1.05);
}

.article-item .article-body {
  flex: 1;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.article-item .article-category {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  background-color: rgba(61, 107, 153, 0.08);
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
  width: fit-content;
}

.article-item .article-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.article-item .article-title:hover {
  color: var(--color-accent);
}

.article-item .article-excerpt {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
  line-height: 1.6;
}

.article-item .article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--color-text-lighter);
}

.article-item .article-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ============================================================
   ARTICLE GRID - Card Layout (Category/Tag Pages)
   ============================================================ */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.article-card .card-image {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.article-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.article-card:hover .card-image img {
  transform: scale(1.05);
}

.article-card .card-image .card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 500;
}

.article-card .card-content {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card .card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.article-card .card-title:hover {
  color: var(--color-accent);
}

.article-card .card-excerpt {
  font-size: 0.83rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.article-card .card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.article-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.76rem;
  color: var(--color-text-lighter);
  padding-top: 10px;
  border-top: 1px solid var(--color-border-light);
}

.article-card .card-footer span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-card .card-stats {
  display: flex;
  gap: 12px;
}

/* ============================================================
   ARTICLE DETAIL
   ============================================================ */
.article-detail {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.article-header {
  margin-bottom: 28px;
}

.article-header .article-title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 16px;
  color: var(--color-text);
}

.article-header .article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.article-header .article-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border-light);
}

.article-header .article-info span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.article-header .article-info a {
  color: var(--color-accent);
}

.article-cover {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 28px;
}

.article-cover img {
  width: 100%;
  height: auto;
}

/* Article Content Typography */
.article-content {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
}

.article-content h2 {
  font-size: 1.4rem;
  margin: 2em 0 0.8em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 1.6em 0 0.6em;
}

.article-content h4 {
  font-size: 1.05rem;
  margin: 1.4em 0 0.5em;
}

.article-content p {
  margin-bottom: 1.2em;
}

.article-content ul,
.article-content ol {
  margin: 0.8em 0 1.2em 1.5em;
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

.article-content li {
  margin-bottom: 0.4em;
}

.article-content blockquote {
  margin: 1.2em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--color-accent);
  background-color: var(--color-bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-light);
  font-style: italic;
}

.article-content pre {
  background-color: #2d2d2d;
  color: #f8f8f2;
  padding: 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.2em 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.5;
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background-color: rgba(61, 107, 153, 0.08);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-accent);
}

.article-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  border-radius: 0;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 1.2em auto;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 0.92rem;
}

.article-content table th,
.article-content table td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.article-content table th {
  background-color: var(--color-bg-alt);
  font-weight: 600;
}

.article-content table tr:nth-child(even) {
  background-color: var(--color-bg-alt);
}

/* ============================================================
   TAGS
   ============================================================ */
.tag,
.tag-item {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  background-color: rgba(61, 107, 153, 0.08);
  color: var(--color-accent);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.tag:hover,
.tag-item:hover {
  background-color: rgba(61, 107, 153, 0.15);
  border-color: rgba(61, 107, 153, 0.2);
  color: var(--color-accent-hover);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Page header for category/tag pages */
.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.page-header .page-desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ============================================================
   SIDEBAR & WIDGETS
   ============================================================ */
.widget {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.widget-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border-light);
  position: relative;
}

.widget-title::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--color-accent);
}

/* Test Card Widget */
.test-card {
  display: block;
  padding: 18px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition-base);
  margin-bottom: 12px;
  border: 1px solid var(--color-border-light);
}

.test-card:last-child {
  margin-bottom: 0;
}

.test-card.anxiety {
  background: linear-gradient(135deg, #e8f0fe 0%, #d4e4f7 100%);
  border-color: #b8d4f0;
}

.test-card.depression {
  background: linear-gradient(135deg, #fef3e8 0%, #fbe8d4 100%);
  border-color: #f5d5b0;
}

.test-card.personality {
  background: linear-gradient(135deg, #e8fef0 0%, #d4f7e4 100%);
  border-color: #b0f0c8;
}

.test-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.test-card .test-icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.test-card .test-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

.test-card .test-desc {
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 10px;
}

.test-card .test-btn {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--color-accent);
  font-weight: 500;
}

/* Numbered Article List Widget */
.widget-article-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.widget-article-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.widget-article-item .rank {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-text-inverse);
  background-color: var(--color-text-lighter);
}

.widget-article-item:nth-child(1) .rank {
  background-color: #e74c3c;
}

.widget-article-item:nth-child(2) .rank {
  background-color: #f39c12;
}

.widget-article-item:nth-child(3) .rank {
  background-color: #f1c40f;
}

.widget-article-item .widget-article-title {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.widget-article-item .widget-article-title:hover {
  color: var(--color-accent);
}

.widget-article-item .widget-article-meta {
  font-size: 0.72rem;
  color: var(--color-text-lighter);
  margin-top: 2px;
}

/* Tag Cloud Widget */
.widget-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================================================
   PREV / NEXT NAVIGATION
   ============================================================ */
.prev-next-nav {
  display: flex;
  gap: 20px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
}

.prev-next-nav a {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  min-width: 0;
}

.prev-next-nav a:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.prev-next-nav a .nav-label {
  font-size: 0.78rem;
  color: var(--color-text-lighter);
  margin-bottom: 4px;
}

.prev-next-nav a .nav-title {
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 500;
}

.prev-next-nav a:hover .nav-title {
  color: var(--color-accent);
}

.prev-next-nav a.next {
  text-align: right;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 32px 0;
}

.page-btn,
.page-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.page-btn:hover,
.page-num:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-num.active {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.page-btn:disabled,
.page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

.pagination .page-dots {
  color: var(--color-text-lighter);
  padding: 0 4px;
  font-size: 0.85rem;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-text-inverse);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border-light);
}

.btn-danger {
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
  border-color: var(--color-danger);
}

.btn-danger:hover {
  background-color: #c0392b;
  border-color: #c0392b;
  color: var(--color-text-inverse);
}

.btn-sm {
  padding: 5px 14px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 12px 28px;
  font-size: 1rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(61, 107, 153, 0.12);
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(61, 107, 153, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-lighter);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: auto;
}

.form-hint {
  font-size: 0.78rem;
  color: var(--color-text-lighter);
  margin-top: 4px;
}

.form-error {
  font-size: 0.78rem;
  color: var(--color-danger);
  margin-top: 4px;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-danger);
}

/* Auth Forms */
.auth-container {
  max-width: 420px;
  margin: 60px auto;
  padding: 0 20px;
}

.auth-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
}

.auth-card h2 {
  text-align: center;
  margin-bottom: 8px;
}

.auth-card .auth-subtitle {
  text-align: center;
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 28px;
}

.auth-card .auth-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.auth-card .auth-footer a {
  font-weight: 500;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 36px 0 24px;
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .footer-logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
}

.footer-brand .footer-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-inverse);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--color-text-inverse);
}

.footer-bottom {
  text-align: center;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a:hover {
  color: var(--color-text-inverse);
}

/* ============================================================
   MESSAGES / ALERTS
   ============================================================ */
.alert {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: 16px;
  border: 1px solid;
}

.alert-success {
  background-color: #e8f5e9;
  border-color: #a5d6a7;
  color: #2e7d32;
}

.alert-warning {
  background-color: #fff3e0;
  border-color: #ffcc80;
  color: #e65100;
}

.alert-danger {
  background-color: #ffebee;
  border-color: #ef9a9a;
  color: #c62828;
}

.alert-info {
  background-color: #e3f2fd;
  border-color: #90caf9;
  color: #1565c0;
}

/* ============================================================
   ADMIN STYLES (Basic)
   ============================================================ */
.admin-layout {
  display: flex;
  min-height: calc(100vh - var(--navbar-height));
}

.admin-sidebar {
  width: 240px;
  background-color: var(--color-white);
  border-right: 1px solid var(--color-border-light);
  padding: 20px 0;
  flex-shrink: 0;
}

.admin-sidebar .admin-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

.admin-sidebar .admin-nav a:hover,
.admin-sidebar .admin-nav a.active {
  background-color: rgba(61, 107, 153, 0.06);
  color: var(--color-accent);
}

.admin-sidebar .admin-nav a.active {
  border-right: 3px solid var(--color-accent);
}

.admin-content {
  flex: 1;
  padding: 24px;
  min-width: 0;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.admin-header h1 {
  font-size: 1.4rem;
}

.admin-table {
  width: 100%;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.admin-table table {
  width: 100%;
  border-collapse: collapse;
}

.admin-table th,
.admin-table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--color-border-light);
}

.admin-table th {
  background-color: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-text-light);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tr:hover td {
  background-color: var(--color-bg-alt);
}

.admin-actions {
  display: flex;
  gap: 8px;
}

.admin-actions .btn {
  padding: 4px 10px;
  font-size: 0.78rem;
}

/* Admin stats cards */
.admin-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.stat-card .stat-label {
  font-size: 0.82rem;
  color: var(--color-text-lighter);
  margin-bottom: 4px;
}

.stat-card .stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
}

/* ============================================================
   LOADING & EMPTY STATES
   ============================================================ */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.loading-spinner::after {
  content: "";
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-round);
  animation: spin 0.7s linear infinite;
}

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

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-lighter);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.empty-state p {
  font-size: 0.88rem;
  margin-bottom: 0;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-3px);
}

/* ============================================================
   RESPONSIVE - Tablet (max-width: 1200px)
   ============================================================ */
@media (max-width: 1200px) {
  :root {
    --sidebar-width: 280px;
    --gap: 20px;
  }

  .category-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .admin-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .carousel-slide .carousel-content {
    padding: 30px;
  }

  .carousel-slide .carousel-content h2 {
    font-size: 1.5rem;
  }
}

/* ============================================================
   RESPONSIVE - Small Tablet / Large Phone (max-width: 992px)
   ============================================================ */
@media (max-width: 992px) {
  .content-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
  }

  .article-detail {
    padding: 28px 24px;
  }

  .article-header .article-title {
    font-size: 1.5rem;
  }

  .prev-next-nav {
    flex-direction: column;
    gap: 12px;
  }

  .admin-layout {
    flex-direction: column;
  }

  .admin-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border-light);
    padding: 10px 0;
  }

  .admin-sidebar .admin-nav {
    display: flex;
    overflow-x: auto;
    gap: 4px;
    padding: 0 16px;
  }

  .admin-sidebar .admin-nav a {
    white-space: nowrap;
    padding: 8px 16px;
    border-right: none;
  }

  .admin-sidebar .admin-nav a.active {
    border-right: none;
    border-bottom: 2px solid var(--color-accent);
  }
}

/* ============================================================
   RESPONSIVE - Mobile (max-width: 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --navbar-height: 50px;
    --gap: 16px;
  }

  .nav-links,
  .nav-right {
    display: none;
  }

  .hamburger-menu {
    display: flex;
  }

  .navbar .container {
    justify-content: space-between;
  }

  /* Hero */
  .hero-carousel {
    height: 280px;
  }

  .carousel-slide .carousel-content {
    padding: 20px;
  }

  .carousel-slide .carousel-content h2 {
    font-size: 1.2rem;
  }

  .carousel-slide .carousel-content p {
    font-size: 0.85rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .carousel-nav {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  .carousel-nav.prev {
    left: 12px;
  }

  .carousel-nav.next {
    right: 12px;
  }

  .carousel-dots {
    right: 20px;
    bottom: 14px;
  }

  /* Category */
  .category-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .category-card {
    padding: 20px 14px;
  }

  .category-card .category-icon {
    width: 44px;
    height: 44px;
    font-size: 1.3rem;
    margin-bottom: 10px;
  }

  /* Articles */
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-item {
    flex-direction: column;
  }

  .article-item .article-thumb {
    width: 100%;
    min-height: 180px;
    height: 180px;
  }

  .article-item .article-body {
    padding: 14px 16px;
  }

  /* Detail */
  .article-detail {
    padding: 20px 16px;
  }

  .article-header .article-title {
    font-size: 1.3rem;
  }

  .article-header .article-info {
    gap: 12px;
  }

  /* Section */
  .section-header h2 {
    font-size: 1.15rem;
  }

  /* Content */
  .content-layout {
    padding: 20px 0;
  }

  .category-section {
    padding: 24px 0 12px;
  }

  /* Pagination */
  .pagination {
    gap: 4px;
    padding: 24px 0;
  }

  .page-btn,
  .page-num {
    min-width: 32px;
    height: 32px;
    font-size: 0.8rem;
  }

  /* Auth */
  .auth-container {
    margin: 30px auto;
  }

  .auth-card {
    padding: 24px 20px;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  /* Admin */
  .admin-stats {
    grid-template-columns: 1fr 1fr;
  }

  .admin-table {
    overflow-x: auto;
  }

  .admin-table table {
    min-width: 600px;
  }

  /* Back to top */
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 36px;
    height: 36px;
  }
}

/* ============================================================
   RESPONSIVE - Small Phone (max-width: 480px)
   ============================================================ */
@media (max-width: 480px) {
  body {
    font-size: 0.95rem;
  }

  .container {
    padding: 0 14px;
  }

  .hero-carousel {
    height: 220px;
  }

  .carousel-slide .carousel-content h2 {
    font-size: 1.05rem;
  }

  .category-cards {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .category-card {
    padding: 16px 10px;
  }

  .category-card h3 {
    font-size: 0.92rem;
  }

  .category-card p {
    display: none;
  }

  .article-header .article-title {
    font-size: 1.15rem;
  }

  .article-content {
    font-size: 0.95rem;
  }

  .admin-stats {
    grid-template-columns: 1fr;
  }

  .prev-next-nav a {
    padding: 12px;
  }
}

/* ============================================================
   CLASS ALIASES - Map HTML classes to existing styles
   ============================================================ */

/* Navbar aliases for header.php */
.navbar-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: var(--navbar-height);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-inverse);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.navbar-brand:hover { color: var(--color-text-inverse); }
.brand-icon { color: var(--color-text-inverse); }
.brand-name { white-space: nowrap; }

.navbar-nav {
  display: flex;
  list-style: none;
  gap: 4px;
  margin: 0 auto;
  padding: 0;
}

.nav-item { position: relative; }

.nav-link {
  display: inline-block;
  padding: 6px 14px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background-color: rgba(255, 255, 255, 0.1);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-form {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 0;
  overflow: hidden;
}

.search-input {
  background: transparent;
  border: none;
  color: #fff;
  padding: 7px 14px;
  font-size: 0.85rem;
  width: 160px;
  outline: none;
}

.search-input::placeholder { color: rgba(255, 255, 255, 0.5); }

.search-btn {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  padding: 7px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
}

.search-btn:hover { color: #fff; }

.login-btn {
  display: inline-block;
  padding: 5px 16px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-pill);
  color: #fff;
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.login-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.user-dropdown { position: relative; }

.user-btn {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-pill);
  color: #fff;
  padding: 5px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 6px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-light);
  min-width: 140px;
  z-index: 1010;
}

.dropdown-menu.show { display: block; }

.dropdown-item {
  display: block;
  padding: 10px 16px;
  color: var(--color-text);
  font-size: 0.85rem;
}

.dropdown-item:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Content with sidebar layout */
.content-with-sidebar {
  display: flex;
  gap: var(--gap);
  align-items: flex-start;
}

.content-with-sidebar .main-content {
  flex: 1;
  min-width: 0;
}

.content-with-sidebar .sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
}

/* Section title with line */
.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(to right, var(--color-accent), transparent);
}

.section-title span { white-space: nowrap; }

/* Category header for list pages */
.category-header {
  margin-bottom: 24px;
}

.category-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.category-desc {
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Article item - horizontal card for homepage list */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.article-item {
  display: flex;
  gap: 20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.article-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.article-item-image {
  width: 200px;
  flex-shrink: 0;
  overflow: hidden;
}

.article-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 150px;
}

.article-item-content {
  flex: 1;
  padding: 16px 16px 16px 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.article-item-content h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-item-content h3 a {
  color: var(--color-text);
}

.article-item-content h3 a:hover {
  color: var(--color-accent);
}

.article-item-content .excerpt {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 10px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--color-text-lighter);
}

.article-meta .tag {
  font-size: 0.72rem;
}

/* Article grid - 3 column card grid */
.article-grid {
  display: grid;
  gap: var(--gap);
}

.article-grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.article-card {
  display: block;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  color: var(--color-text);
}

.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  color: var(--color-text);
}

.card-image {
  position: relative;
  overflow: hidden;
  height: 180px;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.article-card:hover .card-image img {
  transform: scale(1.05);
}

.card-image .category-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 10px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  font-weight: 500;
}

.card-body {
  padding: 14px 16px;
}

.card-body h3, .card-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-body p {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--color-text-lighter);
}

/* Category badge (inline) */
a.category-badge {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  margin-bottom: 6px;
}

a.category-badge:hover { color: #fff; background: var(--color-primary-light); }

/* Article detail */
.article-detail {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

.article-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta-info {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-lighter);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

/* Article actions (like/bookmark/share) */
.article-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

.action-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.action-btn.active {
  background: rgba(61, 107, 153, 0.08);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.action-icon { font-size: 1rem; }

/* Related articles */
.related-articles {
  margin-top: 32px;
}

/* Search page */
.search-page-box {
  margin-bottom: 24px;
}

.search-form-large {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.search-form-large input {
  flex: 1;
  padding: 12px 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  outline: none;
}

.search-form-large input:focus {
  border-color: var(--color-accent);
}

.search-result-info {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Empty text */
.empty-text {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-lighter);
  font-size: 1rem;
}

/* Auth link */
.auth-link {
  text-align: center;
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Alert error alias */
.alert-error {
  background-color: #ffebee;
  border: 1px solid #ef9a9a;
  color: #c62828;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: 16px;
}

/* Page info in pagination */
.page-info {
  font-size: 0.8rem;
  color: var(--color-text-lighter);
  margin-left: 10px;
}

/* Prev/next article (detail page aliases) */
.prev-article, .next-article {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
  min-width: 0;
  text-decoration: none;
}

.prev-article:hover, .next-article:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.next-article { text-align: right; }
.prev-article.empty, .next-article.empty { visibility: hidden; }

/* Btn outline light for carousel */
.btn-outline-light {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.88rem;
  transition: all var(--transition-fast);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  color: #fff;
}

/* Section spacing */
.section {
  padding: 30px 0;
}

/* Category section */
.category-section {
  padding: 30px 0 15px;
}

/* Footer aliases for footer.php */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: 36px 0 0;
  margin-top: auto;
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-info { flex: 1; min-width: 280px; }
.footer-info .footer-brand { color: #fff; font-size: 1.1rem; margin-bottom: 10px; }
.footer-desc { font-size: 0.85rem; line-height: 1.7; color: rgba(255, 255, 255, 0.6); }

.site-footer .footer-links { min-width: 200px; }
.site-footer .footer-links .footer-title { color: #fff; font-size: 0.95rem; margin-bottom: 12px; }
.footer-nav { list-style: none; padding: 0; }
.footer-nav li { margin-bottom: 6px; }
.footer-nav a { color: rgba(255, 255, 255, 0.6); font-size: 0.85rem; }
.footer-nav a:hover { color: #fff; }

.site-footer .footer-bottom {
  text-align: center;
  margin-top: 24px;
  padding: 18px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
}

/* Responsive additions for new classes */
@media (max-width: 992px) {
  .content-with-sidebar {
    flex-direction: column;
  }
  .content-with-sidebar .sidebar {
    width: 100%;
  }
  .article-grid.cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--color-primary);
    padding: 10px 0;
    z-index: 999;
  }
  .navbar-nav.show {
    display: flex;
  }
  .nav-link {
    padding: 10px 20px;
  }
  .navbar-right .search-form {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .article-grid.cols-3 {
    grid-template-columns: 1fr;
  }
  .article-item {
    flex-direction: column;
  }
  .article-item-image {
    width: 100%;
    height: 180px;
  }
  .article-item-content {
    padding: 14px 16px;
  }
  .footer-container {
    flex-direction: column;
    text-align: center;
  }
  .search-form-large {
    flex-direction: column;
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  .navbar,
  .footer,
  .sidebar,
  .carousel-nav,
  .carousel-dots,
  .pagination,
  .back-to-top,
  .hamburger-menu,
  .mobile-nav,
  .prev-next-nav,
  .breadcrumb {
    display: none !important;
  }

  .main-content {
    padding-top: 0;
  }

  .article-detail {
    box-shadow: none;
    border: none;
    padding: 0;
  }

  body {
    background-color: #fff;
    color: #000;
  }
}

/* ============ 首页布局修正（桌面） ============ */
@media (min-width: 992px) {
    .hero-carousel {
        max-width: var(--container-width);
        width: calc(100% - 40px);
        margin: 24px auto 0;
        height: 420px;
        border-radius: 14px;
        box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
    }
    .category-section {
        padding: 28px 0 8px;
    }
    .category-cards {
        grid-template-columns: repeat(5, 1fr);
        gap: 16px;
    }
    .category-card {
        padding: 22px 14px;
    }
    .category-card .category-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 10px;
    }
    .category-card h3 {
        font-size: 1rem;
        margin-bottom: 6px;
    }
    .category-card p {
        display: block;
        font-size: 0.78rem;
        line-height: 1.5;
        color: var(--color-text-light);
    }
}

/* ============ 轮播间距 + 热门标签 widget ============ */
.hero-carousel { margin-top: calc(var(--navbar-height) + 24px) !important; }

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.tag-chip {
    display: inline-block;
    padding: 5px 12px;
    background: #f0f4f8;
    color: #2c5282;
    border-radius: 999px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid #e2e8f0;
}
.tag-chip:hover {
    background: #2c5282;
    color: #fff;
    border-color: #2c5282;
}

/* ============ 轮播文字位置修正 ============ */
.carousel-slide .carousel-overlay {
    display: flex !important;
    flex-direction: column;
    justify-content: flex-end;
    padding: 50px 60px !important;
    color: #fff;
}
.carousel-slide .carousel-overlay h2 {
    color: #fff;
    font-size: 2rem;
    margin: 0 0 14px 0;
    line-height: 1.3;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    max-width: 70%;
}
.carousel-slide .carousel-overlay p {
    color: rgba(255, 255, 255, 0.92);
    font-size: 1rem;
    line-height: 1.6;
    margin: 0 0 22px 0;
    max-width: 60%;
    text-shadow: 0 1px 4px rgba(0,0,0,0.5);
}
.carousel-slide .carousel-overlay .btn {
    align-self: flex-start;
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.85);
    padding: 9px 28px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.2s;
}
.carousel-slide .carousel-overlay .btn:hover {
    background: #fff;
    color: #1a365d;
}

/* ============ 底部三栏布局修正 ============ */
.site-footer .footer-container {
    display: grid !important;
    grid-template-columns: 1.4fr 1fr 1.4fr !important;
    gap: 60px !important;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 50px 40px 30px !important;
    align-items: start;
}
.site-footer .footer-col {
    min-width: 0;
}
.site-footer .footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    font-size: 1.15rem;
    margin: 0 0 16px 0;
}
.site-footer .footer-brand svg { flex-shrink: 0; }
.site-footer .footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.88rem;
    line-height: 1.75;
    margin: 0 0 12px 0;
}
.site-footer .footer-title {
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 18px 0;
}
.site-footer .footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}
.site-footer .footer-nav li { margin-bottom: 10px; }
.site-footer .footer-nav a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s;
}
.site-footer .footer-nav a:hover { color: #fff; }
.site-footer .footer-about-links { margin-top: 6px; }
.site-footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 22px 20px 18px;
    text-align: center;
    max-width: var(--container-width);
    margin: 0 auto;
}
.site-footer .footer-bottom p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.85rem;
    margin: 2px 0;
}
.site-footer .footer-bottom .footer-tagline {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.82rem;
}
@media (max-width: 768px) {
    .site-footer .footer-container {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
        padding: 30px 20px 20px !important;
    }
}