/* 
 * 吉尔吉斯斯坦国立医科大学网站样式
 * 主样式表
 */

/* 全局样式 */
:root {
  --primary-color: #003366;      /* 深蓝色作为主色调 */
  --secondary-color: #0077cc;    /* 蓝色作为次要色调 */
  --accent-color: #e63946;       /* 红色作为强调色，医疗相关 */
  --light-color: #f8f9fa;        /* 浅灰色背景 */
  --dark-color: #212529;         /* 深色文字 */
  --success-color: #28a745;      /* 绿色，成功提示 */
  --warning-color: #ffc107;      /* 黄色，警告提示 */
  --info-color: #17a2b8;         /* 青色，信息提示 */
  --font-primary: 'Open Sans', Arial, sans-serif;
  --font-heading: 'Montserrat', 'Open Sans', Arial, sans-serif;
  --transition: all 0.3s ease;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --border-radius: 4px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #fff;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

p {
  margin-bottom: 1rem;
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #002855;
  border-color: #002855;
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  color: #fff;
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.btn-secondary:hover {
  background-color: #0066b3;
  border-color: #0066b3;
  text-decoration: none;
  color: #fff;
}

.btn-accent {
  color: #fff;
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-accent:hover {
  background-color: #d32f3c;
  border-color: #d32f3c;
  text-decoration: none;
  color: #fff;
}

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

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

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

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
}

.section-title:after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background-color: var(--accent-color);
  margin: 0.5rem auto 0;
}

/* 头部样式 */
.header {
  background-color: #fff;
  box-shadow: var(--box-shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 60px;
  margin-right: 10px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin: 0;
}

.logo-subtitle {
  font-size: 0.9rem;
  color: var(--secondary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: 1.5rem;
  position: relative;
}

.nav-link {
  color: var(--dark-color);
  font-weight: 600;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

.nav-link:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: var(--transition);
}

.nav-link:hover:after {
  width: 100%;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff;
  box-shadow: var(--box-shadow);
  min-width: 200px;
  border-radius: var(--border-radius);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--dark-color);
  transition: var(--transition);
}

.dropdown-item:hover {
  background-color: var(--light-color);
  color: var(--secondary-color);
  text-decoration: none;
}

.header-right {
  display: flex;
  align-items: center;
}

.language-switch {
  margin-right: 1rem;
  position: relative;
}

.language-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-weight: 600;
  color: var(--dark-color);
  display: flex;
  align-items: center;
}

.language-btn:hover {
  color: var(--secondary-color);
}

.language-btn i {
  margin-left: 5px;
}

.language-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background-color: #fff;
  box-shadow: var(--box-shadow);
  min-width: 120px;
  border-radius: var(--border-radius);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.language-switch:hover .language-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.language-item {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--dark-color);
  transition: var(--transition);
}

.language-item:hover {
  background-color: var(--light-color);
  color: var(--secondary-color);
  text-decoration: none;
}

.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--dark-color);
  font-size: 1.2rem;
  transition: var(--transition);
}

.search-btn:hover {
  color: var(--secondary-color);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--dark-color);
}

/* 横幅区域 */
.hero {
  height: 100vh;
  min-height: 600px;
  background-color: var(--primary-color);
  background-image: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)), url('../images/slider/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  color: #fff;
  display: flex;
  align-items: center;
  position: relative;
  margin-top: 80px; /* 头部高度 */
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 0 15px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #fff;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 2rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0) translateX(-50%);
  }
  40% {
    transform: translateY(-20px) translateX(-50%);
  }
  60% {
    transform: translateY(-10px) translateX(-50%);
  }
}

/* 学术项目区域 */
.programs {
  background-color: var(--light-color);
}

.program-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.program-card {
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
}

.program-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.program-image {
  height: 200px;
  overflow: hidden;
}

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

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

.program-content {
  padding: 1.5rem;
}

.program-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.program-text {
  margin-bottom: 1rem;
  color: var(--dark-color);
}

/* 研究区域 */
.research {
  background-color: #fff;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.research-item {
  text-align: center;
  padding: 2rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  border: 1px solid #eee;
}

.research-item:hover {
  box-shadow: var(--box-shadow);
  transform: translateY(-5px);
}

.research-icon {
  font-size: 3rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.research-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* 临床实践区域 */
.clinical {
  background-color: var(--light-color);
}

.clinical-container {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
}

.clinical-image {
  flex: 1;
  min-width: 300px;
}

.clinical-content {
  flex: 1;
  min-width: 300px;
}

.clinical-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.clinical-text {
  margin-bottom: 1.5rem;
}

.clinical-list {
  list-style: none;
  margin-bottom: 1.5rem;
}

.clinical-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
}

.clinical-list li:before {
  content: '\2022';
  color: var(--accent-color);
  font-weight: bold;
  position: absolute;
  left: 0;
}

/* 新闻与活动区域 */
.news {
  background-color: #fff;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.news-card {
  background-color: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.news-image {
  height: 200px;
  overflow: hidden;
}

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

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

.news-content {
  padding: 1.5rem;
}

.news-date {
  font-size: 0.9rem;
  color: #6c757d;
  margin-bottom: 0.5rem;
}

.news-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.news-excerpt {
  margin-bottom: 1rem;
  color: var(--dark-color);
}

/* 成就区域 */
.achievements {
  background-color: var(--primary-color);
  color: #fff;
  text-align: center;
}

.achievements .section-title {
  color: #fff;
}

.achievements .section-title:after {
  background-color: #fff;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.achievement-item {
  padding: 2rem;
  border-radius: var(--border-radius);
  background-color: rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.achievement-item:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.achievement-number {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #fff;
}

.achievement-text {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
}

/* 国际合作区域 */
.international {
  background-color: #fff;
}

.partners-logo {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.partner-item {
  width: 150px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: var(--transition);
}

.partner-item:hover {
  filter: grayscale(0);
  opacity: 1;
}

.partner-item img {
  max-width: 100%;
  max-height: 100%;
}

/* 页脚区域 */
.footer {
  background-color: var(--dark-color);
  color: #fff;
  padding: 4rem 0 0;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 2rem;
}

.footer-logo {
  margin-bottom: 1rem;
}

.footer-logo img {
  height: 60px;
}

.footer-about p {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
}

.footer-title {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-title:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 2px;
  background-color: var(--accent-color);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
  text-decoration: none;
  padding-left: 5px;
}

.footer-contact li {
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: flex-start;
}

.footer-contact i {
  margin-right: 10px;
  color: var(--accent-color);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: #fff;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--accent-color);
  color: #fff;
  text-decoration: none;
}

.footer-bottom {
  background-color: rgba(0, 0, 0, 0.2);
  padding: 1.5rem 0;
  margin-top: 3rem;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

/* 响应式样式 */
@media (max-width: 992px) {
  .header-container {
    padding: 0.5rem 0;
  }
  
  .logo img {
    height: 50px;
  }
  
  .logo-title {
    font-size: 1.25rem;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 80%;
    height: calc(100vh - 80px);
    background-color: #fff;
    flex-direction: column;
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow-y: auto;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-item {
    margin: 0 0 1rem 0;
  }
  
  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    min-width: auto;
    padding: 0;
    margin: 0.5rem 0 0 1rem;
    display: none;
  }
  
  .nav-item.active .nav-dropdown {
    display: block;
  }
  
  .dropdown-item {
    padding: 0.5rem 0;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 768px) {
  .hero {
    min-height: 500px;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .clinical-container {
    flex-direction: column;
  }
  
  .clinical-image {
    order: 1;
  }
  
  .clinical-content {
    order: 2;
  }
  
  .achievement-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

@media (max-width: 576px) {
  .logo-subtitle {
    display: none;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .program-cards,
  .research-grid,
  .news-grid,
  .achievement-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
  }
}