/* ===== CSS VARIABLES ===== */
:root {
  /* Colors */
  --color-primary: #000000;
  --color-secondary: #1a1a1a;
  --color-tertiary: #2d2d2d;
  --color-quaternary: #404040;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --color-gray: #666666;
  --color-gray-light: #999999;
  --color-accent: #4f46e5;
  --color-accent-light: #6366f1;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #000000 0%, #1a1a1a 50%, #2d2d2d 100%);
  --gradient-secondary: linear-gradient(135deg, #2d2d2d 0%, #404040 100%);
  --gradient-accent: linear-gradient(135deg, #4f46e5 0%, #6366f1 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: 1rem;
  --header-height: 80px;
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Light theme variables */
[data-theme="light"] {
  --color-primary: #ffffff;
  --color-secondary: #f8fafc;
  --color-tertiary: #e2e8f0;
  --color-quaternary: #cbd5e1;
  --color-light: #1e293b;
  --color-white: #000000;
  --color-gray: #64748b;
  --color-gray-light: #475569;
  
  --gradient-primary: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #e2e8f0 100%);
  --gradient-secondary: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
  --gradient-card: linear-gradient(135deg, rgba(0, 0, 0, 0.05) 0%, rgba(0, 0, 0, 0.02) 100%);
}

/* ===== BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-light);
  background: var(--color-primary);
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== SCROLL PROGRESS ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient-accent);
  z-index: var(--z-fixed);
  transition: width var(--transition-fast);
}

/* ===== CUSTOM CURSOR ===== */
.cursor,
.cursor-follower {
  position: fixed;
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-tooltip);
  transition: transform var(--transition-fast);
}

.cursor {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  transform: translate(-50%, -50%);
}

.cursor-follower {
  width: 30px;
  height: 30px;
  border: 2px solid var(--color-accent);
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease-out, width var(--transition-fast), height var(--transition-fast);
}

.cursor-follower.hover {
  width: 50px;
  height: 50px;
}

/* Hide cursor on touch devices */
@media (hover: none) {
  .cursor,
  .cursor-follower {
    display: none;
  }
}

/* ===== LOADING SCREEN ===== */
.loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading__spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--color-tertiary);
  border-top: 3px solid var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

.loading__text {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-5xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section__subtitle {
  display: inline-block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: var(--line-height-tight);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

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

.btn--primary {
  background: var(--gradient-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.header.scrolled {
  background: rgba(0, 0, 0, 0.95);
  box-shadow: var(--shadow-lg);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  text-decoration: none;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-light);
  text-decoration: none;
  transition: color var(--transition-normal);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-white);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__social {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-gray-light);
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
}

.nav__social-link:hover {
  color: var(--color-white);
  background: var(--color-tertiary);
  transform: translateY(-2px);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  color: var(--color-gray-light);
  font-size: var(--font-size-lg);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.theme-toggle:hover {
  color: var(--color-white);
  background: var(--color-tertiary);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav__toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-normal);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.hero__container {
  position: relative;
  z-index: 2;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  margin-bottom: var(--spacing-4xl);
}

.hero__text {
  animation: fadeInUp 1s ease-out;
}

.hero__title {
  margin-bottom: var(--spacing-xl);
}

.hero__name {
  display: block;
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-sm);
}

.hero__role {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.hero__subtitle {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  color: var(--color-gray-light);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.hero__stats {
  display: flex;
  gap: var(--spacing-2xl);
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: var(--line-height-tight);
}

.hero__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__image {
  position: relative;
  animation: fadeInRight 1s ease-out 0.3s both;
}

.hero__image-container {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.hero__img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.hero__image-container:hover .hero__img {
  transform: scale(1.05);
}

.hero__image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.hero__image-container:hover .hero__image-overlay {
  opacity: 1;
}

.hero__scroll {
  text-align: center;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero__scroll-link {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-gray);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-normal);
}

.hero__scroll-link:hover {
  color: var(--color-white);
}

.hero__scroll-link i {
  animation: bounce 2s infinite;
}

/* ===== PARTICLES ===== */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 6s ease-in-out infinite;
}

.particle:nth-child(odd) {
  animation-delay: -2s;
}

.particle:nth-child(3n) {
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 1;
  }
}

/* ===== ABOUT SECTION ===== */
.about {
  background: var(--color-secondary);
}

.about__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  margin-bottom: var(--spacing-4xl);
}

.about__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
}

.about__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.about__highlight {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-light);
}

.about__highlight i {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
}

.about__image {
  position: relative;
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about__img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

.about__image:hover .about__img {
  transform: scale(1.05);
}

.skills__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.skills__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
}

.skills__group {
  background: var(--gradient-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skills__group::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
  transition: left var(--transition-slow);
}

.skills__group:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: var(--shadow-lg);
}

.skills__group:hover::before {
  left: 100%;
}

.skills__group-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.skills__group-title i {
  color: var(--color-accent);
  font-size: var(--font-size-xl);
}

.skills__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.skill__item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-tertiary);
  color: var(--color-light);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.skill__item i {
  font-size: var(--font-size-base);
  color: var(--color-accent);
  transition: color var(--transition-normal);
}

.skill__item:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.skill__item:hover i {
  color: var(--color-white);
  animation: iconRotate 0.5s ease-in-out;
}

/* Special animations for skills */
.skills__group.animate .skill__item {
  animation: skillSlideIn 0.5s ease-out forwards;
}

.skills__group.animate .skill__item:nth-child(1) { animation-delay: 0.1s; }
.skills__group.animate .skill__item:nth-child(2) { animation-delay: 0.2s; }
.skills__group.animate .skill__item:nth-child(3) { animation-delay: 0.3s; }
.skills__group.animate .skill__item:nth-child(4) { animation-delay: 0.4s; }
.skills__group.animate .skill__item:nth-child(5) { animation-delay: 0.5s; }
.skills__group.animate .skill__item:nth-child(6) { animation-delay: 0.6s; }

.skill__item:hover {
  animation: skillPulse 1s infinite;
}

/* ===== PROJECTS SECTION ===== */
.projects {
  background: var(--color-primary);
}

.projects__showcase {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.projects__showcase-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-2xl);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-4xl);
}

.project__card {
  background: var(--gradient-card);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-normal);
}

.project__card:hover {
  transform: translateY(-10px);
}

.project__image {
  position: relative;
  overflow: hidden;
}

.project__image img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project__image:hover .project__overlay {
  opacity: 1;
}

.project__image:hover img {
  transform: scale(1.1);
}

.project__links {
  display: flex;
  gap: var(--spacing-lg);
}

.project__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--gradient-accent);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  font-weight: var(--font-weight-medium);
  transition: transform var(--transition-normal);
}

.project__link:hover {
  transform: translateY(-2px);
}

.project__content {
  padding: var(--spacing-xl);
}

.project__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.project__description {
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.project__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.project__feature {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-tertiary);
  color: var(--color-light);
  font-size: var(--font-size-xs);
  border-radius: var(--border-radius-sm);
}

.project__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tech__item {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--gradient-accent);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius-full);
}

.projects__cta {
  text-align: center;
}

.projects__cta p {
  color: var(--color-gray);
  margin-bottom: var(--spacing-lg);
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
  background: var(--color-secondary);
}

.experience__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
}

.experience__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.experience__note {
  color: var(--color-gray);
  font-style: italic;
  margin-bottom: var(--spacing-2xl);
}

.coursework__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.coursework__grid {
  display: grid;
  gap: var(--spacing-lg);
}

.course__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--gradient-card);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--transition-normal);
}

.course__item:hover {
  transform: translateX(10px);
}

.course__item i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-lg);
}

.course__item span {
  color: var(--color-light);
  font-weight: var(--font-weight-medium);
}

.certifications__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-2xl);
}

.certification__item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--gradient-card);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.certification__icon {
  flex-shrink: 0;
}

.certification__icon i {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-xl);
}

.certification__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.certification__date {
  color: var(--color-accent);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-md);
}

.certification__description {
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
}

/* ===== CONTACT SECTION ===== */
.contact {
  background: var(--color-primary);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
}

.contact__item {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.contact__icon {
  flex-shrink: 0;
}

.contact__icon i {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: var(--color-white);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-lg);
}

.contact__details h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.contact__details a {
  color: var(--color-gray);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.contact__details a:hover {
  color: var(--color-accent);
}

.contact__social h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.contact__social-links {
  display: flex;
  gap: var(--spacing-lg);
}

.contact__social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--gradient-card);
  color: var(--color-light);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.contact__social-link:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ===== CONTACT FORM ===== */
.contact__form {
  background: var(--gradient-card);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.form__group {
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.form__input {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-md);
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  color: var(--color-white);
  font-size: var(--font-size-base);
  transition: all var(--transition-normal);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

.form__label {
  position: absolute;
  top: var(--spacing-lg);
  left: var(--spacing-md);
  color: var(--color-gray);
  font-size: var(--font-size-base);
  pointer-events: none;
  transition: all var(--transition-normal);
}

.form__input:focus + .form__label,
.form__input:not(:placeholder-shown) + .form__label {
  top: -10px;
  left: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  background: var(--color-primary);
  padding: 0 var(--spacing-sm);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-secondary);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-4xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer__description {
  color: var(--color-gray);
  line-height: var(--line-height-relaxed);
}

.footer__links {
  display: flex;
  gap: var(--spacing-2xl);
}

.footer__group-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer__list {
  list-style: none;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--color-gray);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-tertiary);
  color: var(--color-light);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
}

.footer__social-link:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

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

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

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

@keyframes skillPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(79, 70, 229, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(79, 70, 229, 0);
  }
}

@keyframes iconRotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes skillSlideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media screen and (max-width: 1024px) {
  .hero__content,
  .about__content,
  .experience__content,
  .contact__content,
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .hero__image {
    order: -1;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  .project__card {
    max-width: 500px;
    margin: 0 auto;
  }
}

@media screen and (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-2xl);
    transition: left var(--transition-normal);
  }
  
  .nav__menu.active {
    left: 0;
  }
  
  .nav__list {
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
  }
  
  .nav__link {
    font-size: var(--font-size-lg);
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .section {
    padding: var(--spacing-3xl) 0;
  }
  
  .section__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__name {
    font-size: var(--font-size-4xl);
  }
  
  .hero__role {
    font-size: var(--font-size-xl);
  }
  
  .hero__buttons {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .hero__stats {
    justify-content: space-around;
  }
  
  .skills__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .skills__group {
    padding: var(--spacing-lg);
  }
  
  .skills__group-title {
    font-size: var(--font-size-base);
  }
  
  .skill__item {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
  }
  
  .project__card {
    min-width: auto;
  }
  
  .coursework__grid {
    grid-template-columns: 1fr;
  }
  
  .footer__links {
    flex-direction: column;
    gap: var(--spacing-xl);
  }
}

@media screen and (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero__name {
    font-size: var(--font-size-3xl);
  }
  
  .section__title {
    font-size: var(--font-size-2xl);
  }
  
  .hero__stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .contact__social-links {
    flex-direction: column;
  }
  
  .projects__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.nav__link:focus,
.form__input:focus,
.theme-toggle:focus,
.nav__toggle:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #000000;
    --color-white: #ffffff;
    --color-accent: #0066cc;
  }
}

/* Print styles */
@media print {
  .header,
  .nav__toggle,
  .theme-toggle,
  .particles,
  .cursor,
  .cursor-follower,
  .loading {
    display: none !important;
  }
  
  .section {
    page-break-inside: avoid;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
}