/* Manus News Website - Main Stylesheet */

/* ===== GLOBAL STYLES ===== */
:root {
  --primary-color: #0066cc;
  --secondary-color: #00aaff;
  --accent-color: #ff3366;
  --dark-color: #1a1a2e;
  --light-color: #f5f7fa;
  --text-color: #333333;
  --text-light: #ffffff;
  --text-muted: #6c757d;
  --border-color: #e0e0e0;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-color);
  overflow-x: hidden;
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--primary-color);
  color: var(--text-light);
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

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

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-align: center;
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 50px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  padding: 10px 0;
  background-color: rgba(255, 255, 255, 0.98);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--dark-color);
}

.logo span {
  color: var(--primary-color);
}

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

.nav-links li {
  margin-left: 30px;
}

.nav-links a {
  color: var(--text-color);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--primary-color);
}

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

/* ===== HERO SECTION ===== */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--dark-color) 0%, #2a2a5a 100%);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/hero-pattern.svg');
  background-size: cover;
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 650px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--secondary-color);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 15px;
}

.hero-image {
  position: absolute;
  right: -5%;
  bottom: -10%;
  width: 50%;
  max-width: 700px;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
  100% {
    transform: translateY(0px);
  }
}

/* ===== FEATURES SECTION ===== */
.features {
  background-color: #fff;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background-color: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  background-color: rgba(0, 102, 204, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon i {
  font-size: 24px;
  color: var(--primary-color);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.feature-description {
  color: var(--text-muted);
}

/* ===== COMPARISON SECTION ===== */
.comparison {
  background-color: var(--light-color);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 50px;
  box-shadow: var(--shadow);
  background-color: #fff;
  border-radius: 8px;
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 15px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background-color: var(--primary-color);
  color: var(--text-light);
  font-weight: 600;
}

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

.comparison-table tr:nth-child(even) {
  background-color: rgba(0, 102, 204, 0.05);
}

.check-icon {
  color: #28a745;
  font-size: 1.2rem;
}

.x-icon {
  color: #dc3545;
  font-size: 1.2rem;
}

/* ===== USE CASES SECTION ===== */
.use-cases {
  background-color: #fff;
}

.use-cases-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 15px 30px;
  background: none;
  border: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tab-btn.active {
  color: var(--primary-color);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.use-case-card {
  display: flex;
  align-items: flex-start;
  gap: 30px;
  margin-bottom: 40px;
  padding: 30px;
  background-color: var(--light-color);
  border-radius: 8px;
}

.use-case-icon {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background-color: rgba(0, 102, 204, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.use-case-icon i {
  font-size: 32px;
  color: var(--primary-color);
}

.use-case-content h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--dark-color);
  color: var(--text-light);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-logo span {
  color: var(--secondary-color);
}

.footer-description {
  opacity: 0.8;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 15px;
}

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

.social-icon:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.social-icon i {
  color: var(--text-light);
  font-size: 18px;
}

.footer-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
}

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

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--secondary-color);
  padding-left: 5px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  opacity: 0.7;
  font-size: 0.9rem;
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== MEDIA QUERIES ===== */
@media screen and (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-image {
    width: 45%;
    right: -10%;
  }
  
  .section {
    padding: 60px 0;
  }
}

@media screen and (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: #fff;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 999;
  }
  
  .nav-links.active {
    transform: translateY(0);
  }
  
  .nav-links li {
    margin: 15px 0;
  }
  
  .hero {
    height: auto;
    padding: 120px 0 80px;
  }
  
  .hero-content {
    text-align: center;
    margin: 0 auto;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-image {
    position: relative;
    width: 80%;
    margin: 50px auto 0;
    right: auto;
    bottom: auto;
  }
  
  .use-case-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media screen and (max-width: 576px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .feature-card {
    padding: 20px;
  }
  
  .comparison-table th,
  .comparison-table td {
    padding: 10px;
    font-size: 0.9rem;
  }
  
  .tab-btn {
    padding: 10px 15px;
    font-size: 0.9rem;
  }
}