/* Main Styles */
:root {
  /* Color Variables */
  --primary-50: #e6f0ff;
  --primary-100: #cce0ff;
  --primary-200: #99c1ff;
  --primary-300: #66a3ff;
  --primary-400: #3384ff;
  --primary-500: #0366d6;
  --primary-600: #0256b3;
  --primary-700: #024590;
  --primary-800: #01346d;
  --primary-900: #01234a;

  --secondary-50: #f3f0ff;
  --secondary-100: #e8e0ff;
  --secondary-200: #d0c1ff;
  --secondary-300: #b8a3ff;
  --secondary-400: #a184ff;
  --secondary-500: #6f42c1;
  --secondary-600: #5e38a3;
  --secondary-700: #4e2e85;
  --secondary-800: #3d2467;
  --secondary-900: #2d1a4a;

  --accent-50: #e5f7ee;
  --accent-100: #ccefdd;
  --accent-200: #99dfbb;
  --accent-300: #66cf99;
  --accent-400: #33bf77;
  --accent-500: #28a745;
  --accent-600: #218c3a;
  --accent-700: #1b712f;
  --accent-800: #145623;
  --accent-900: #0e3b18;

  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;

  /* Font Variables */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* Spacing Variables */
  --space-2: 0.125rem; /* 2px */
  --space-4: 0.25rem;  /* 4px */
  --space-8: 0.5rem;   /* 8px */
  --space-16: 1rem;    /* 16px */
  --space-24: 1.5rem;  /* 24px */
  --space-32: 2rem;    /* 32px */
  --space-48: 3rem;    /* 48px */
  --space-64: 4rem;    /* 64px */
  --space-80: 5rem;    /* 80px */
  --space-96: 6rem;    /* 96px */
  --space-128: 8rem;   /* 128px */

  /* Border Radius */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 1rem;     /* 16px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transition */
  --transition-base: all 0.2s ease-in-out;
  --transition-slow: all 0.3s ease-in-out;
  --transition-slower: all 0.5s ease-in-out;

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 80px;
}

/* Base Styles */
body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
  background-color: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-24);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--space-16);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-16);
}

.accent {
  color: var(--primary-500);
}

/* Section Styling */
section {
  padding: var(--space-64) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-48);
}

.section-title {
  margin-bottom: var(--space-8);
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-16) var(--space-24);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  text-align: center;
  transition: var(--transition-base);
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--primary-500);
  color: white;
  border: 2px solid var(--primary-500);
}

.btn-primary:hover {
  background-color: var(--primary-600);
  border-color: var(--primary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary-500);
  border: 2px solid var(--primary-500);
}

.btn-secondary:hover {
  background-color: var(--primary-50);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-light {
  background-color: white;
  color: var(--primary-500);
  border: 2px solid white;
}

.btn-light:hover {
  background-color: var(--gray-100);
  border-color: var(--gray-100);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  border-color: var(--primary-500);
  color: var(--primary-500);
  transform: translateY(-2px);
}

/* Header & Navigation */
header {
  /* position: fixed; */
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--bg-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

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

.logo {
  font-weight: var(--font-weight-bold);
  font-size: 1.8rem;
}

.logo-link {
  color: var(--primary-500);
  transition: var(--transition-base);
}

.logo-link:hover {
  color: var(--primary-600);
}

nav {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: var(--space-24);
}

.nav-links a {
  font-weight: var(--font-weight-medium);
  color: var(--text-color);
  transition: var(--transition-base);
  position: relative;
  padding: var(--space-4) 0;
}

.nav-links a:hover, 
.nav-links a.active {
  color: var(--primary-500);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-500);
  transition: var(--transition-base);
}

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

.theme-toggle {
  display: flex;
  align-items: center;
  margin-left: var(--space-24);
}

#theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--bg-secondary);
  color: var(--text-color);
  transition: var(--transition-base);
}

#theme-toggle-btn:hover {
  background-color: var(--primary-100);
  color: var(--primary-500);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-8);
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-color);
  transition: var(--transition-base);
}

/* Footer */
footer {
  background-color: var(--bg-secondary);
  padding: var(--space-64) 0 var(--space-24);
  margin-top: var(--space-64);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-48);
  margin-bottom: var(--space-48);
}

.footer-logo a {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary-500);
}

.footer-logo p {
  margin-top: var(--space-8);
  color: var(--text-secondary);
}

.footer-links {
  display: flex;
  gap: var(--space-48);
}

.footer-nav h3,
.footer-social h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-16);
  color: var(--text-color);
}

.footer-nav ul,
.social-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.footer-nav a,
.social-links a {
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.footer-nav a:hover,
.social-links a:hover {
  color: var(--primary-500);
}

.social-links {
  flex-direction: row;
  gap: var(--space-16);
}

.social-links a {
  font-size: 1.2rem;
}

.footer-bottom {
  padding-top: var(--space-24);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-secondary);
}

/* Page Transitions */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  z-index: 9999;
  transform: translateY(100%);
  pointer-events: none;
}

/* Hero Section Styles */
.hero {
  /* padding-top: calc(var(--header-height) + var(--space-64)); */
  padding-bottom: var(--space-64);
}

.hero .container {
  display: flex;
  align-items: center;
  gap: var(--space-48);
}

.hero-content {
  flex: 1;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: var(--space-16);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-32);
}

.hero-cta {
  display: flex;
  gap: var(--space-16);
}

.hero-image {
  flex: 1;
  position: relative;
}

.profile-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.experience-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: var(--primary-500);
  color: white;
  padding: var(--space-16);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-md);
}

.experience-badge span:first-child {
  font-size: 1.5rem;
}

/* Contact CTA Section */
.contact-cta {
  background-color: var(--primary-500);
  color: white;
  text-align: center;
  padding: var(--space-64) 0;
  margin-top: var(--space-64);
}

.contact-cta h2 {
  font-size: 2.5rem;
  margin-bottom: var(--space-16);
}

.contact-cta p {
  font-size: 1.25rem;
  margin-bottom: var(--space-32);
  max-width: 600px;
  margin-inline: auto;
}

/* Page Hero */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-48));
  padding-bottom: var(--space-48);
  text-align: center;
}

.page-title {
  font-size: 3rem;
  margin-bottom: var(--space-16);
}

.page-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin-inline: auto;
}

/* Animation Classes */
.reveal-text {
  opacity: 0;
  transform: translateY(20px);
  animation: revealText 0.8s forwards;
}

.reveal-text-delay {
  opacity: 0;
  transform: translateY(20px);
  animation: revealText 0.8s forwards 0.3s;
}

.reveal-text-delay-2 {
  opacity: 0;
  transform: translateY(20px);
  animation: revealText 0.8s forwards 0.6s;
}

.reveal-image {
  opacity: 0;
  transform: translateY(20px) scale(0.95);
  animation: revealImage 1s forwards 0.3s;
}

@keyframes revealText {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes revealImage {
  0% {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Responsive Styles */
@media (max-width: 991px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .hero .container {
    flex-direction: column;
  }
  
  .hero-content, .hero-image {
    width: 100%;
  }
  
  .hero-image {
    margin-top: var(--space-32);
  }
  
  .experience-badge {
    bottom: 20px;
    left: 20px;
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    flex-direction: column;
    align-items: center;
    padding: var(--space-24);
    gap: var(--space-16);
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-slower);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .footer-content {
    flex-direction: column;
    gap: var(--space-32);
  }
  
  .footer-links {
    flex-direction: column;
    gap: var(--space-24);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

@media (max-width: 576px) {
  :root {
    --space-64: 3rem;
    --space-48: 2rem;
    --space-32: 1.5rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-header {
    margin-bottom: var(--space-32);
  }
  
  .experience-badge {
    padding: var(--space-8);
    font-size: 0.9rem;
  }
  
  .experience-badge span:first-child {
    font-size: 1.2rem;
  }
}