/* CSS Variables */
:root {
  /* Colors */
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary-color: #7c3aed;
  --secondary-dark: #6d28d9;
  --accent-color: #f59e0b;
  --accent-dark: #d97706;
  
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Neutrals */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  --white: #ffffff;
  --black: #000000;
  
  /* Custom background */
  --page-background: #dbfed4;
  
  /* Typography */
  --font-family: 'Raleway', 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;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-30: 10rem;
  --space-34: 14rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: var(--page-background);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

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

a:hover {
  color: var(--primary-dark);
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: center;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  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-normal);
}

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

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

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

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

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

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--space-4) 0;
  transition: all var(--transition-fast);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo a {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--gray-900);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

.nav-link {
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
  position: relative;
}

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

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

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

.hamburger {
  display: none;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--page-background);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

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

.hero-subtitle {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--gray-600);
  margin-bottom: var(--space-2);
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-5xl));
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  margin-bottom: var(--space-8);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  height: 500px;
  animation: fadeInRight 1s ease-out 0.3s both;
}

.floating-card {
  position: absolute;
  border-radius: var(--radius-xl);
  background: var(--white);
  box-shadow: var(--shadow-xl);
  animation: float 6s ease-in-out infinite;
}

.card-1 {
  width: 200px;
  height: 280px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  top: 20px;
  left: 50px;
  animation-delay: 0s;
}

.card-2 {
  width: 180px;
  height: 240px;
  background: linear-gradient(135deg, var(--accent-color), var(--warning-color));
  top: 150px;
  right: 80px;
  animation-delay: 2s;
}

.card-3 {
  width: 160px;
  height: 200px;
  background: linear-gradient(135deg, var(--success-color), var(--primary-light));
  bottom: 50px;
  left: 20px;
  animation-delay: 4s;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--gray-400);
  border-bottom: 2px solid var(--gray-400);
  transform: rotate(45deg);
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* Portfolio Section */
.portfolio {
  padding: var(--space-24) 0;
  background-color: var(--page-background);
}

.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-16);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-2) var(--space-6);
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-full);
  color: var(--gray-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.portfolio-item {
  opacity: 1;
  transform: scale(1);
  transition: all var(--transition-normal);
}

.portfolio-item.hide {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.portfolio-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.portfolio-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}

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

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(124, 58, 237, 0.9));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--white);
  opacity: 0;
  transition: opacity var(--transition-normal);
  padding: var(--space-6);
}

.portfolio-image:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-image:hover img {
  transform: scale(1.1);
}

.portfolio-overlay h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

.portfolio-overlay p {
  margin-bottom: var(--space-4);
  opacity: 0.9;
}

.view-project {
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-lg);
  color: var(--white);
  cursor: pointer;
  transition: all var(--transition-fast);
  /*backdrop-filter: blur(10px);*/
}

.view-project:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* About Section */
.about {
  padding: var(--space-24) 0;
  background-color: var(--page-background);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-description {
  font-size: var(--font-size-lg);
  color: var(--gray-600);
  line-height: 1.7;
}

.skills {
  margin-top: var(--space-12);
}

.skills h3 {
  color: var(--gray-900);
  margin-bottom: var(--space-6);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}

.skill-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-fast);
}

.skill-item:hover {
  transform: translateY(-8px);
}

.skill-icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.skill-info h4 {
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.skill-info p {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  margin: 0;
}

.about-image {
  display: flex;
  justify-content: center;
}

.image-container {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 300px;
}

.image-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
  z-index: 1;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Contact Section */
.contact {
  padding: var(--space-24) 0;
  background-color: var(--page-background);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  max-width: 1000px;
  margin: 0 auto;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.contact-icon {
  font-size: var(--font-size-2xl);
  width: 60px;
  height: 60px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-details h3 {
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.contact-details p {
  color: var(--gray-600);
  margin: 0;
}

.social-links {
  margin-top: var(--space-8);
}

.social-links h3 {
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.social-icons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.social-link {
  padding: var(--space-2) var(--space-4);
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  color: var(--gray-600);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.social-link:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--gray-700);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.modal-content {
  background-color: var(--white);
  margin: 5% auto;
  padding: 0;
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 800px;
  position: relative;
  animation: modalSlideIn 0.3s ease-out;
}

.close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: var(--font-size-3xl);
  font-weight: bold;
  color: var(--gray-400);
  cursor: pointer;
  z-index: 10;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.9);
  transition: all var(--transition-fast);
}

.close:hover {
  color: var(--gray-600);
  background: var(--white);
}

.modal-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.modal-body img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.modal-info {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.modal-info h2 {
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.modal-info p {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.modal-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tag {
  padding: var(--space-1) var(--space-3);
  background: var(--gray-100);
  color: var(--gray-700);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Footer */
.footer {
  background-color: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-12) 0;
  text-align: center;
}

.footer-content p {
  margin-bottom: var(--space-2);
}

.footer-content p:last-child {
  margin-bottom: 0;
}

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

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

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
/* Bottom Navigation for Mobile */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--gray-200);
  padding: var(--space-3) 0;
  z-index: 1000;
}

.bottom-nav-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  max-width: 100%;
  margin: 0 auto;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--gray-600);
  font-size: var(--font-size-xs);
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: var(--space-2);
  min-width: 60px;
}

.bottom-nav-item.active,
.bottom-nav-item:hover {
  color: var(--primary-color);
}

.bottom-nav-icon {
  width: 24px;
  height: 24px;
  margin-bottom: var(--space-1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }
  
  .hero-visual {
    height: 400px;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .modal-body {
    grid-template-columns: 1fr;
  }
  
  .modal-body img {
    height: 250px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .bottom-nav {
    display: block;
  }

  body {
    padding-bottom: 80px;
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .social-icons {
    justify-content: center;
  }
  
  .container {
    padding: 0 var(--space-4);
  }
  
  .section-header {
    margin-bottom: var(--space-12);
  }
  
  .portfolio,
  .about,
  .contact {
    padding: var(--space-16) 0;
  }
}

@media (max-width: 480px) {
  .floating-card {
    display: none;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .modal-content {
    margin: 10% auto;
    width: 95%;
  }
  
  .modal-info {
    padding: var(--space-6);
  }
  
  .contact-form {
    padding: var(--space-6);
  }
}