/*
Theme Name: 5G AI Medical Tech
Theme URI: https://example.com/medical-tech
Author: Medical Tech Company
Author URI: https://example.com
Description: 专为 5G+AI 医疗科技公司设计的主题，支持直播、手术转播、会议直播等功能。简洁现代，科技感十足。
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: medical-tech
Tags: medical, live-streaming, technology, business

*/

/* ===================================
   直播平台筛选器
   =================================== */

.live-filters {
    margin-bottom: 2rem;
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 8px;
    background: rgba(10, 22, 40, 0.8);
    color: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-select:hover,
.filter-select:focus {
    border-color: var(--primary-blue);
    outline: none;
}

#search-input {
    padding: 0.5rem 1rem;
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 8px;
    background: rgba(10, 22, 40, 0.8);
    color: white;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

#search-input::placeholder {
    color: #6B7280;
}

#search-input:focus {
    border-color: var(--primary-blue);
    outline: none;
}

/* 直播加载状态 */
.live-loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
}

.live-loading::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(0, 102, 255, 0.3);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* 直播无结果 */
.live-no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
}

/* ===================================
   基础样式重置
   =================================== */

:root {
  --primary-blue: #0066FF;
  --tech-cyan: #00D4FF;
  --dark-bg: #0A1628;
  --primary-dark: #1e3a8a;
  --text-white: #ffffff;
  --text-gray: #9CA3AF;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--dark-bg);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===================================
   导航栏
   =================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 102, 255, 0.3);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.site-logo img {
  height: 50px;
  width: auto;
}

.main-navigation ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.main-navigation a {
  color: var(--text-gray);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  padding: 0.5rem 0;
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
  color: var(--text-white);
}

/* ===================================
   Hero Banner
   =================================== */

.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 80px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-dark) 50%, var(--primary-blue) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 102, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
  opacity: 0.3;
}

@keyframes gridMove {
  0% { background-position: 0 0; }
  100% { background-position: 50px 50px; }
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
  padding: 0 2rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
  background: linear-gradient(to right, #fff, #93c5fd, var(--tech-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--text-gray);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, var(--primary-blue), var(--tech-cyan));
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 0 30px rgba(0, 102, 255, 0.5);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(0, 102, 255, 0.6);
}

.btn-secondary {
  padding: 1rem 2.5rem;
  background: transparent;
  color: white;
  border: 1px solid rgba(0, 102, 255, 0.5);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.btn-secondary:hover {
  background: rgba(0, 102, 255, 0.2);
}

/* ===================================
   通用区块样式
   =================================== */

.section {
  padding: 5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(to right, var(--primary-blue), var(--tech-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider {
  width: 100px;
  height: 3px;
  background: linear-gradient(to right, var(--primary-blue), var(--tech-cyan));
  margin: 0 auto;
  border-radius: 3px;
}

/* ===================================
   服务卡片
   =================================== */

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

.service-card {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3), rgba(10, 22, 40, 0.5));
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 16px;
  padding: 2.5rem;
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary-blue);
  box-shadow: 0 20px 60px rgba(0, 102, 255, 0.3);
}

.service-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-white);
}

.service-description {
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.service-features {
  list-style: none;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-gray);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.service-features li::before {
  content: '✓';
  color: var(--tech-cyan);
  font-weight: bold;
}

/* ===================================
   技术介绍
   =================================== */

.tech-section {
  background: rgba(10, 22, 40, 0.5);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.tech-card {
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.tech-card:hover {
  border-color: var(--primary-blue);
}

.tech-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--text-white);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tech-card h3::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(to bottom, var(--primary-blue), var(--tech-cyan));
  border-radius: 2px;
}

.tech-card p {
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.tech-specs {
  list-style: none;
}

.tech-specs li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-gray);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.tech-specs li::before {
  content: '•';
  color: var(--tech-cyan);
}

/* ===================================
   直播平台
   =================================== */

.live-section {
  padding: 5rem 2rem;
}

.live-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.stat-card {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.3), rgba(10, 22, 40, 0.5));
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
}

.stat-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-gray);
  font-size: 0.9rem;
}

.live-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.live-card {
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.live-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-blue);
}

.live-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
  overflow: hidden;
}

.live-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.live-card:hover .live-thumbnail img {
  transform: scale(1.1);
}

.live-status {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.live-status.live {
  background: rgba(239, 68, 68, 0.9);
  color: white;
}

.live-status.upcoming {
  background: rgba(0, 102, 255, 0.9);
  color: white;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.live-content {
  padding: 1.5rem;
}

.live-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-white);
}

.live-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-gray);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.live-button {
  width: 100%;
  padding: 0.75rem;
  background: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease;
}

.live-button:hover {
  background: var(--primary-dark);
}

/* ===================================
   页脚
   =================================== */

.site-footer {
  background: rgba(10, 22, 40, 0.8);
  border-top: 1px solid rgba(0, 102, 255, 0.3);
  padding: 4rem 2rem 2rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section h4 {
  color: var(--text-white);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: 0.75rem;
}

.footer-section a {
  color: var(--text-gray);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--primary-blue);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 102, 255, 0.2);
  color: var(--text-gray);
  font-size: 0.9rem;
}

/* ===================================
   响应式设计
   =================================== */

@media (max-width: 768px) {
  .header-container {
    padding: 0 1rem;
  }
  
  .main-navigation ul {
    display: none;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .section {
    padding: 3rem 1rem;
  }
  
  .services-grid,
  .tech-grid,
  .live-grid {
    grid-template-columns: 1fr;
  }
}