/* Enhanced Stylesheet for Kalyanjit Hatibaruah's Personal Website */

/* ===== GLOBAL STYLES ===== */
:root {
  --primary-color: #0a2463; /* Deep blue */
  --secondary-color: #d4af37; /* Gold */
  --accent-color: #3e92cc; /* Light blue */
  --dark-color: #1a1a1a;
  --light-color: #f8f9fa;
  --text-color: #333333;
  --text-light: #ffffff;
  --gradient-primary: linear-gradient(135deg, #0a2463 0%, #1e3a8a 100%);
  --gradient-secondary: linear-gradient(135deg, #d4af37 0%, #f2d675 100%);
  --font-primary: 'Montserrat', sans-serif;
  --font-secondary: 'Playfair Display', serif;
  --transition: all 0.3s ease;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --box-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.2);
  --border-radius: 10px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 62.5%; /* 1rem = 10px */
}

body {
  font-family: var(--font-primary);
  font-size: 1.6rem;
  line-height: 1.7;
  color: var(--text-color);
  overflow-x: hidden;
  background-color: var(--light-color);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 2rem;
  color: var(--dark-color);
}

h1 {
  font-size: 5.5rem;
}

h2 {
  font-size: 4.2rem;
}

h3 {
  font-size: 3.2rem;
}

h4 {
  font-size: 2.6rem;
}

p {
  margin-bottom: 2rem;
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 10rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 6rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 8rem;
  height: 0.4rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

.btn {
  display: inline-block;
  padding: 1.5rem 3.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.2);
  transition: var(--transition);
  z-index: -1;
}

.btn:hover::before {
  width: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-light);
  box-shadow: 0 4px 15px rgba(10, 36, 99, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(10, 36, 99, 0.5);
  transform: translateY(-3px);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--dark-color);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-secondary:hover {
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
  transform: translateY(-3px);
}

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

.btn-outline:hover {
  background-color: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-3px);
}

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

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

.flex {
  display: flex;
}

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

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

.grid {
  display: grid;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 5rem;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
  gap: 4rem;
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  transition: var(--transition);
  padding: 2.5rem 0;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--box-shadow);
  padding: 1.5rem 0;
}

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

.logo {
  font-family: var(--font-secondary);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--text-light);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.header.scrolled .logo {
  color: var(--primary-color);
  text-shadow: none;
}

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

.nav-links li {
  margin-left: 3.5rem;
}

.nav-links a {
  color: var(--text-light);
  font-weight: 600;
  font-size: 1.6rem;
  position: relative;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.header.scrolled .nav-links a {
  color: var(--text-color);
  text-shadow: none;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  margin: 5px 0;
  transition: var(--transition);
}

.header.scrolled .hamburger span {
  background-color: var(--text-color);
}

/* ===== HERO SECTION ===== */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(10, 36, 99, 0.8), rgba(10, 36, 99, 0.8)), url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(62, 146, 204, 0.2) 0%, rgba(10, 36, 99, 0) 70%);
}

.hero-content {
  max-width: 800px;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 6.5rem;
  margin-bottom: 2rem;
  color: var(--text-light);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: 2.6rem;
  margin-bottom: 3.5rem;
  font-weight: 400;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 1s ease 0.2s forwards;
  opacity: 0;
}

.hero-btns {
  display: flex;
  gap: 2.5rem;
  animation: fadeInUp 1s ease 0.4s forwards;
  opacity: 0;
}

.hero-image {
  position: absolute;
  right: 10%;
  bottom: 0;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  overflow: hidden;
  border: 8px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  animation: fadeIn 1.5s ease;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== ABOUT SECTION ===== */
.about {
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-secondary);
  opacity: 0.05;
  z-index: 0;
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.about-img {
  position: relative;
}

.about-img img {
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.about-img:hover img {
  transform: scale(1.02);
  box-shadow: var(--box-shadow-hover);
}

.about-img::before {
  content: '';
  position: absolute;
  top: -2.5rem;
  left: -2.5rem;
  width: 100%;
  height: 100%;
  border: 5px solid var(--secondary-color);
  border-radius: var(--border-radius);
  z-index: -1;
  transition: var(--transition);
}

.about-img:hover::before {
  top: -1.5rem;
  left: -1.5rem;
}

.about-text h3 {
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.about-text h3::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  width: 6rem;
  height: 0.3rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

.about-text p {
  margin-bottom: 3rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

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

.stat-number {
  font-size: 4rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.stat-title {
  font-size: 1.6rem;
  color: var(--text-color);
}

/* ===== SERVICES SECTION ===== */
.services {
  background-color: var(--light-color);
  position: relative;
  overflow: hidden;
}

.services::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.05;
  z-index: 0;
}

.service-card {
  background-color: #fff;
  padding: 4rem 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  text-align: center;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0;
  background: var(--gradient-primary);
  opacity: 0.05;
  transition: var(--transition);
  z-index: -1;
}

.service-card:hover {
  transform: translateY(-15px);
  box-shadow: var(--box-shadow-hover);
}

.service-card:hover::before {
  height: 100%;
}

.service-icon {
  width: 9rem;
  height: 9rem;
  background: var(--gradient-primary);
  color: var(--text-light);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 2.5rem;
  font-size: 3.5rem;
  box-shadow: 0 10px 20px rgba(10, 36, 99, 0.2);
  transition: var(--transition);
}

.service-card:hover .service-icon {
  transform: rotateY(180deg);
}

.service-title {
  font-size: 2.4rem;
  margin-bottom: 1.8rem;
  transition: var(--transition);
}

.service-card:hover .service-title {
  color: var(--primary-color);
}

/* ===== EXPERTISE SECTION ===== */
.expertise {
  background: var(--gradient-primary);
  color: var(--text-light);
  position: relative;
  overflow: hidden;
}

.expertise::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background: url('../images/pattern.png');
  opacity: 0.05;
}

.expertise .section-title {
  color: var(--text-light);
}

.expertise .section-title::after {
  background: var(--gradient-secondary);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.expertise-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 4rem 3rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.expertise-card:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-10px);
}

.expertise-card h4 {
  color: var(--secondary-color);
  margin-bottom: 2rem;
  position: relative;
  padding-bottom: 1.5rem;
}

.expertise-card h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 5rem;
  height: 0.3rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

.expertise-card p {
  color: var(--text-light);
}

/* ===== GLOBAL NETWORK SECTION ===== */
.network {
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.network::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-secondary);
  opacity: 0.05;
  z-index: 0;
}

.network-map {
  height: 500px;
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  margin-bottom: 6rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--box-shadow);
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.network-item {
  text-align: center;
  padding: 3rem 2rem;
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.network-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow);
  background-color: #fff;
}

.network-icon {
  font-size: 3.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.network-item:hover .network-icon {
  transform: scale(1.2);
  color: var(--secondary-color);
}

.network-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.network-item:hover .network-title {
  color: var(--primary-color);
}

.alumni-section {
  margin-top: 8rem;
  padding: 5rem;
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  position: relative;
  z-index: 1;
}

.alumni-section h3 {
  margin-bottom: 3rem;
  text-align: center;
}

.alumni-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.alumni-text p {
  margin-bottom: 2rem;
}

.alumni-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3rem;
  margin-top: 3rem;
}

.alumni-logo {
  width: 120px;
  height: 120px;
  background-color: #fff;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.alumni-logo:hover {
  transform: scale(1.1);
  box-shadow: var(--box-shadow-hover);
}

.alumni-logo img {
  max-width: 70%;
  max-height: 70%;
}

/* ===== SPEAKING SECTION ===== */
.speaking {
  background-color: var(--light-color);
  position: relative;
  overflow: hidden;
}

.speaking::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.05;
  z-index: 0;
}

.speaking-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4rem;
  position: relative;
  z-index: 1;
}

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

.speaking-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-hover);
}

.speaking-img {
  height: 250px;
  background-color: #e9ecef;
  position: relative;
  overflow: hidden;
}

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

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

.speaking-content {
  padding: 3rem;
}

.speaking-title {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.speaking-card:hover .speaking-title {
  color: var(--primary-color);
}

.speaking-date {
  color: #6c757d;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
}

.speaking-date i {
  margin-right: 1rem;
  color: var(--secondary-color);
}

/* ===== LINKEDIN POSTS SECTION ===== */
.linkedin-posts {
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.linkedin-posts::after {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-secondary);
  opacity: 0.05;
  z-index: 0;
}

.linkedin-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4rem;
  position: relative;
  z-index: 1;
}

.linkedin-card {
  background-color: #fff;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  border: 1px solid #e9ecef;
}

.linkedin-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-hover);
}

.linkedin-header {
  display: flex;
  align-items: center;
  padding: 2rem;
  border-bottom: 1px solid #e9ecef;
}

.linkedin-profile {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  overflow: hidden;
  margin-right: 1.5rem;
}

.linkedin-profile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.linkedin-author h4 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

.linkedin-author p {
  font-size: 1.4rem;
  color: #6c757d;
  margin-bottom: 0;
}

.linkedin-img {
  height: 200px;
  background-color: #e9ecef;
  position: relative;
  overflow: hidden;
}

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

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

.linkedin-content {
  padding: 2rem;
}

.linkedin-text {
  margin-bottom: 2rem;
  max-height: 100px;
  overflow: hidden;
  position: relative;
}

.linkedin-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, 1));
}

.linkedin-date {
  color: #6c757d;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.linkedin-date i {
  margin-right: 1rem;
  color: var(--secondary-color);
}

.linkedin-actions {
  display: flex;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid #e9ecef;
}

.linkedin-action {
  display: flex;
  align-items: center;
  color: #6c757d;
  font-size: 1.4rem;
  transition: var(--transition);
}

.linkedin-action:hover {
  color: var(--primary-color);
}

.linkedin-action i {
  margin-right: 0.5rem;
}

/* ===== ARTICLES SECTION ===== */
.articles {
  background-color: var(--light-color);
  position: relative;
  overflow: hidden;
}

.articles::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.05;
  z-index: 0;
}

.article-card {
  background-color: #fff;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}

.article-card:hover {
  transform: translateY(-15px);
  box-shadow: var(--box-shadow-hover);
}

.article-img {
  height: 250px;
  background-color: #e9ecef;
  position: relative;
  overflow: hidden;
}

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

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

.article-content {
  padding: 3rem;
}

.article-date {
  color: #6c757d;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
}

.article-date i {
  margin-right: 1rem;
  color: var(--secondary-color);
}

.article-title {
  font-size: 2.2rem;
  margin-bottom: 2rem;
  transition: var(--transition);
}

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

.article-excerpt {
  margin-bottom: 2.5rem;
}

/* ===== CONTACT SECTION ===== */
.contact {
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.contact::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: var(--gradient-secondary);
  opacity: 0.05;
  z-index: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  position: relative;
  z-index: 1;
}

.contact-info h3 {
  margin-bottom: 4rem;
  position: relative;
  display: inline-block;
}

.contact-info h3::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  width: 6rem;
  height: 0.3rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: 3rem;
  transition: var(--transition);
}

.contact-item:hover {
  transform: translateX(10px);
}

.contact-icon {
  width: 6rem;
  height: 6rem;
  background: var(--gradient-primary);
  color: var(--text-light);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-right: 2.5rem;
  font-size: 2.5rem;
  box-shadow: 0 10px 20px rgba(10, 36, 99, 0.2);
  transition: var(--transition);
}

.contact-item:hover .contact-icon {
  transform: rotateY(180deg);
}

.contact-text h4 {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.contact-form {
  background-color: #fff;
  padding: 5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.form-group {
  margin-bottom: 2.5rem;
  position: relative;
}

.form-control {
  width: 100%;
  padding: 1.8rem 2rem;
  border: 2px solid #e9ecef;
  border-radius: var(--border-radius);
  font-family: var(--font-primary);
  font-size: 1.6rem;
  transition: var(--transition);
  background-color: #f8f9fa;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(10, 36, 99, 0.1);
  background-color: #fff;
}

textarea.form-control {
  height: 180px;
  resize: none;
}

.form-label {
  position: absolute;
  top: 1.8rem;
  left: 2rem;
  color: #6c757d;
  transition: var(--transition);
  pointer-events: none;
}

.form-control:focus + .form-label,
.form-control:not(:placeholder-shown) + .form-label {
  top: -1.2rem;
  left: 1rem;
  font-size: 1.2rem;
  padding: 0 0.5rem;
  background-color: #fff;
  color: var(--primary-color);
}

/* ===== CTA SECTION ===== */
.cta {
  background: linear-gradient(rgba(10, 36, 99, 0.9), rgba(10, 36, 99, 0.9)), url('../images/cta-bg.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--text-light);
  text-align: center;
  padding: 10rem 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../images/pattern.png');
  opacity: 0.05;
}

.cta h2 {
  color: var(--text-light);
  margin-bottom: 3rem;
  font-size: 4.5rem;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
  position: relative;
  z-index: 1;
}

.cta p {
  font-size: 2rem;
  max-width: 700px;
  margin: 0 auto 4rem;
  position: relative;
  z-index: 1;
}

.cta-btns {
  display: flex;
  justify-content: center;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--dark-color);
  color: var(--text-light);
  padding: 8rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('../images/pattern.png');
  opacity: 0.02;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 6rem;
  margin-bottom: 6rem;
  position: relative;
  z-index: 1;
}

.footer-about h3 {
  color: var(--text-light);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.footer-about h3::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  width: 5rem;
  height: 0.3rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

.footer-about p {
  margin-bottom: 2.5rem;
  color: #adb5bd;
}

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

.social-link {
  width: 4.5rem;
  height: 4.5rem;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-light);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  transition: var(--transition);
}

.social-link:hover {
  background-color: var(--secondary-color);
  color: var(--dark-color);
  transform: translateY(-5px);
}

.footer-links h4 {
  color: var(--text-light);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.footer-links h4::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  width: 4rem;
  height: 0.3rem;
  background: var(--gradient-secondary);
  border-radius: 2px;
}

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

.footer-links li {
  margin-bottom: 1.5rem;
}

.footer-links a {
  color: #adb5bd;
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.footer-links a i {
  margin-right: 1rem;
  color: var(--secondary-color);
  transition: var(--transition);
}

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

.footer-links a:hover i {
  transform: rotate(90deg);
}

.footer-bottom {
  text-align: center;
  padding-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 1;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* ===== RESPONSIVE DESIGN ===== */
@media screen and (max-width: 1200px) {
  html {
    font-size: 55%;
  }
  
  .hero-image {
    width: 350px;
    height: 350px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  
  .footer-about {
    grid-column: span 3;
    margin-bottom: 3rem;
  }
}

@media screen and (max-width: 992px) {
  html {
    font-size: 50%;
  }
  
  .grid-3,
  .expertise-grid,
  .speaking-grid,
  .linkedin-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4,
  .network-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .hero-image {
    display: none;
  }
  
  .about-content,
  .contact-grid,
  .alumni-content {
    grid-template-columns: 1fr;
  }
  
  .about-img {
    margin-bottom: 4rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
  
  .footer-about {
    grid-column: span 2;
  }
}

@media screen and (max-width: 768px) {
  .hamburger {
    display: block;
    z-index: 1001;
  }
  
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--light-color);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
  }
  
  .nav-links.active {
    right: 0;
  }
  
  .nav-links li {
    margin: 2.5rem 0;
  }
  
  .nav-links a {
    color: var(--text-color);
    font-size: 2rem;
    text-shadow: none;
  }
  
  .hero-title {
    font-size: 5rem;
  }
  
  .hero-subtitle {
    font-size: 2.2rem;
  }
  
  .hero-btns {
    flex-direction: column;
    gap: 2rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4,
  .expertise-grid,
  .network-grid,
  .speaking-grid,
  .linkedin-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-about {
    grid-column: span 1;
  }
  
  .section {
    padding: 8rem 0;
  }
  
  .contact-form {
    padding: 3rem;
  }
  
  .cta h2 {
    font-size: 3.5rem;
  }
  
  .cta p {
    font-size: 1.8rem;
  }
  
  .cta-btns {
    flex-direction: column;
    gap: 2rem;
  }
}

@media screen and (max-width: 576px) {
  .hero-title {
    font-size: 4rem;
  }
  
  .hero-subtitle {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 3.5rem;
  }
  
  .about-img::before {
    display: none;
  }
  
  .contact-item {
    flex-direction: column;
    text-align: center;
  }
  
  .contact-icon {
    margin-right: 0;
    margin-bottom: 1.5rem;
  }
  
  .contact-form {
    padding: 2.5rem;
  }
  
  .alumni-logos {
    gap: 2rem;
  }
  
  .alumni-logo {
    width: 100px;
    height: 100px;
  }
}