/* =============================
   Modern Portfolio Design System
   ============================= */

/* Google Fonts */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");

/* CSS Variables - Design Tokens */
:root {
  /* Colors - Dark Theme with Vibrant Accents */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #13131a;
  --color-bg-tertiary: #1a1a24;
  --color-surface: rgba(255, 255, 255, 0.05);
  --color-surface-hover: rgba(255, 255, 255, 0.08);

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    #8b5cf6 0%,
    #3b82f6 50%,
    #ec4899 100%
  );
  --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-glass: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.05) 100%
  );

  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0b0;
  --color-text-tertiary: #6b6b7b;
  --color-accent: #8b5cf6;
  --color-accent-pink: #ec4899;
  --color-accent-blue: #3b82f6;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    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;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

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

/* =============================
   Reset & Base Styles
   ============================= */

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

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

body {
  font-family: var(--font-family);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Pattern */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 20% 30%,
      rgba(139, 92, 246, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 70%,
      rgba(59, 130, 246, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 50% 50%,
      rgba(236, 72, 153, 0.05) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: 0;
}

/* =============================
   Typography
   ============================= */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: 900;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
}

h3 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
}

p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-base);
}

/* =============================
   Layout Components
   ============================= */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 1;
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
  position: relative;
}

.section-title h2 {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  position: relative;
}

.section-title h2::after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

/* =============================
   Navigation
   ============================= */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--space-md) 0;
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  padding: var(--space-sm) 0;
}

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


.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: all var(--transition-base);
}

.logo:hover {
  transform: scale(1.1);
}

.logo-icon {
  width: 42px;
  height: 42px;
  transition: all var(--transition-base);
}


.nav-menu {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  position: relative;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.mobile-menu-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--color-text-primary);
  margin: 5px 0;
  transition: all var(--transition-base);
  border-radius: var(--radius-sm);
}

/* =============================
   Hero Section
   ============================= */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 900px;
  animation: fadeInUp 1s ease;
}

.hero-greeting {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  opacity: 0;
  animation: fadeIn 0.8s ease 0.2s forwards;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  margin-bottom: var(--space-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  animation: fadeIn 0.8s ease 0.4s forwards;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  min-height: 3rem;
  opacity: 0;
  animation: fadeIn 0.8s ease 0.6s forwards;
}

.hero-description {
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  opacity: 0;
  animation: fadeIn 0.8s ease 0.8s forwards;
}

.hero-cta {
  display: inline-flex;
  gap: var(--space-md);
  opacity: 0;
  animation: fadeIn 0.8s ease 1s forwards;
}

/* =============================
   Buttons
   ============================= */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.5);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border: 2px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* =============================
   Glass Card Component
   ============================= */

.glass-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

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

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255, 255, 255, 0.2);
}

.glass-card:hover::before {
  opacity: 0.05;
}

.glass-card > * {
  position: relative;
  z-index: 1;
}

/* =============================
   About Section
   ============================= */

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-text h3 {
  margin-bottom: var(--space-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-text p {
  margin-bottom: var(--space-md);
  font-size: var(--font-size-lg);
}

.highlight-box {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-top: var(--space-lg);
}

.highlight-box strong {
  color: var(--color-accent);
}

.about-highlights {
  display: grid;
  gap: var(--space-md);
}

.highlight-item {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.highlight-item:hover {
  transform: translateX(8px);
  border-color: rgba(139, 92, 246, 0.5);
}

.highlight-item h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
}

.highlight-item p {
  font-size: var(--font-size-sm);
}

/* =============================
   Portfolio/Projects Section
   ============================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-xl);
}

.project-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(139, 92, 246, 0.3);
}

.project-header {
  margin-bottom: var(--space-md);
}

.project-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-xs);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-subtitle {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-description {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.tech-tag {
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--color-accent);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* =============================
   Contact Section
   ============================= */

.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-content p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xl);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  font-weight: 600;
  transition: all var(--transition-base);
}

.social-link:hover {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: var(--shadow-md);
}

/* =============================
   Footer
   ============================= */

.footer {
  padding: var(--space-xl) 0;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: var(--space-3xl);
}

.footer p {
  color: var(--color-text-tertiary);
}

/* =============================
   Animations
   ============================= */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

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

/* Scroll Reveal Animation Classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* =============================
   Responsive Design
   ============================= */

@media (max-width: 1024px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --space-3xl: 4rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  /* Mobile Navigation */
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(26, 26, 36, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-3xl) var(--space-xl);
    gap: var(--space-lg);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.active {
    right: 0;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  .hero {
    min-height: 90vh;
  }

  .hero-subtitle {
    font-size: var(--font-size-xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

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

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .social-links {
    flex-direction: column;
  }

  .social-link {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --space-2xl: 2.5rem;
    --space-xl: 2rem;
  }

  .glass-card,
  .project-card {
    padding: var(--space-md);
  }

  .highlight-item {
    padding: var(--space-md);
  }
}

/* =============================
   Enhanced Elements - Icons & Images
   ============================= */

/* Logo Icon */
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.logo-icon {
  width: 32px;
  height: 32px;
  animation: bounceIn 0.8s ease;
}

/* Social Icons */
.social-icon {
  width: 24px;
  height: 24px;
  transition: all var(--transition-base);
}

.social-link:hover .social-icon {
  transform: scale(1.2) rotate(5deg);
  filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.6));
}

/* Profile Image */
.profile-image-container {
  float: right;
  margin: 0 0 var(--space-lg) var(--space-xl);
}

.profile-image-placeholder {
  width: 200px;
  height: 200px;
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  border: 3px solid rgba(139, 92, 246, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
  position: relative;
  overflow: hidden;
}

.profile-image-placeholder::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--gradient-primary);
  opacity: 0.1;
  animation: rotate 10s linear infinite;
}

/* =============================
   Enhanced Animations
   ============================= */

/* Floating Animation */
@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Rotation Animation */
@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Bounce In Animation */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

/* Pulse Animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.05);
  }
}

/* Staggered Card Reveal */
.projects-grid .project-card:nth-child(1) { animation-delay: 0.1s; }
.projects-grid .project-card:nth-child(2) { animation-delay: 0.2s; }
.projects-grid .project-card:nth-child(3) { animation-delay: 0.3s; }
.projects-grid .project-card:nth-child(4) { animation-delay: 0.4s; }
.projects-grid .project-card:nth-child(5) { animation-delay: 0.5s; }
.projects-grid .project-card:nth-child(6) { animation-delay: 0.6s; }
.projects-grid .project-card:nth-child(7) { animation-delay: 0.7s; }
.projects-grid .project-card:nth-child(8) { animation-delay: 0.8s; }
.projects-grid .project-card:nth-child(9) { animation-delay: 0.9s; }
.projects-grid .project-card:nth-child(10) { animation-delay: 1s; }

/* Enhanced Button Ripple Effect */
.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Page Load Animation */
@keyframes pageLoad {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

body {
  animation: pageLoad 0.5s ease;
}

/* Tech Tag Hover */
.tech-tag {
  transition: all var(--transition-base);
}

.tech-tag:hover {
  background: rgba(139, 92, 246, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(139, 92, 246, 0.3);
}

/* Enhanced Highlight Items with Counter Animation */
.highlight-item h4 {
  position: relative;
}

.highlight-item.animate-count h4 {
  animation: pulse 0.5s ease;
}

/* Navbar Logo Hover */
.logo:hover .logo-icon {
  animation: bounceIn 0.5s ease;
}

/* Mobile Responsive for Profile Image */
@media (max-width: 768px) {
  .profile-image-container {
    float: none;
    margin: 0 auto var(--space-xl);
    text-align: center;
  }
  
  .profile-image-placeholder {
    width: 150px;
    height: 150px;
    font-size: 4rem;
  }
}