/* ===============================================
   Modern 3D Artist Portfolio - Main Styles
   =============================================== */

/* CSS Custom Properties (Variables) */
:root {
  /* Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #f59e0b;
  --accent-color: #ec4899;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --text-light: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-dark: #111827;
  --border-color: #e5e7eb;
  --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 10px 25px rgba(0, 0, 0, 0.15);
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  --gradient-secondary: linear-gradient(135deg, #667eea, #764ba2);
  
  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-display: 'Playfair Display', serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
  
  /* Transitions */
  --transition-fast: 0.2s ease-out;
  --transition-medium: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

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

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

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

body {
  font-family: 'Bebas Neue', sans-serif !important;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

/* ===============================================
   Loading Screen
   =============================================== */

.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

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

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

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border-color);
  border-top: 3px solid #FF8C00;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-sm);
}

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

.loader-content p {
  color: var(--text-secondary);
  font-weight: 500;
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-medium);
}

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

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-logo a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.nav-logo a:hover {
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background-color: #f59e0b;
  border-radius: 1px;
  transition: transform var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5.1px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger span {
  width: 24px;
  height: 3px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

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

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

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

/* ===============================================
   Utility Classes
   =============================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.section-title {
   font-family: 'Bebas Neue', sans-serif !important;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 12px 24px;
  border-radius: var(--border-radius);
  font-weight: 500;
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

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

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

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 100px 0 var(--spacing-xl);
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  overflow: hidden;
}

.hero-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

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

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
}

.title-line {
  display: block;
  animation: fadeInUp 0.8s ease-out forwards;
  opacity: 0;
  transform: translateY(30px);
}

.title-line:nth-child(1) {
  animation-delay: 0.2s;
}

.title-line:nth-child(2) {
  animation-delay: 0.4s;
}

.title-line:nth-child(3) {
  animation-delay: 0.6s;
}

.title-line.accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.8s ease-out 0.8s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 1s forwards;
  opacity: 0;
  transform: translateY(30px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-container {
  width: 400px;
  height: 400px;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.floating-element {
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: 50% 40% 60% 30%;
  position: relative;
  animation: morphing 8s ease-in-out infinite;
}

.hero-gradient {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2), transparent);
  border-radius: 50%;
  filter: blur(40px);
  animation: pulse 4s ease-in-out infinite;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-light);
  animation: fadeInUp 0.8s ease-out 1.2s forwards;
  opacity: 0;
}

.scroll-arrow {
  margin-top: var(--spacing-xs);
  animation: bounce 2s ease-in-out infinite;
}

/* ===============================================
   Featured Work Section
   =============================================== */

.featured-work {
  padding: var(--spacing-xl) 0;
  background: var(--bg-primary);
}

.featured-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: var(--spacing-md);
  height: 600px;
}

.featured-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-medium);
}

.featured-item:hover {
  transform: scale(1.02);
}

.featured-item.large {
  grid-row: 1 / 3;
}

.featured-image {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

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

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

.featured-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.featured-item:hover .featured-overlay {
  opacity: 1;
}

.featured-content h3 {
  color: white;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.featured-content p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
}

.view-project {
  color: white;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: gap var(--transition-fast);
}

.featured-item:hover .view-project {
  gap: var(--spacing-sm);
}

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

.portfolio {
  padding: var(--spacing-xl) 0;
  background: var(--bg-secondary);
}

.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.portfolio-item {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: all var(--transition-medium);
  cursor: pointer;
}

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

.portfolio-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  position: relative;
}

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

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

.portfolio-content {
  padding: var(--spacing-md);
}

.portfolio-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.portfolio-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.portfolio-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.portfolio-tag {
  padding: 4px 8px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-radius: 4px;
}

.load-more-container {
  text-align: center;
  margin-top: var(--spacing-lg);
}

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

.about {
  padding: var(--spacing-xl) 0;
  background: var(--bg-primary);
}

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

.about-text .section-header {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.about-description {
  margin-bottom: var(--spacing-lg);
}

.about-description p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.skill-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  transition: transform var(--transition-fast);
}

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

.skill-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-sm);
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.skill-item h4 {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.skill-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.about-visual {
  position: relative;
}

.about-image {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

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

.about-decoration {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background: var(--gradient-primary);
  border-radius: 50%;
  opacity: 0.1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ===============================================
   Services Section
   =============================================== */

.services {
  padding: var(--spacing-xl) 0;
  background: var(--bg-secondary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.service-card {
  background: var(--bg-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: all var(--transition-medium);
  text-align: center;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
}

.service-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.service-card > p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.service-features {
  list-style: none;
  text-align: left;
}

.service-features li {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  padding-left: var(--spacing-md);
  position: relative;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

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

.contact {
  padding: var(--spacing-xl) 0;
  background: var(--bg-primary);
}

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

.contact-info .section-header {
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

.contact-details {
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: #f59e0b;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.contact-text h4 {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.contact-text p {
  color: var(--text-secondary);
}

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

.social-link {
  width: 50px;
  height: 50px;
  background: var(--bg-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

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

.contact-form-container {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 16px 12px 8px;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--bg-primary);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-group label {
  position: absolute;
  top: 16px;
  left: 12px;
  color: var(--text-light);
  font-size: 1rem;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: 4px;
  font-size: 0.75rem;
  color: var(--primary-color);
  font-weight: 500;
}

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

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

.footer {
  background: var(--bg-dark);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-logo h3 {
   font-family: 'Bebas Neue', sans-serif !important;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.footer-logo p {
  color: rgba(255, 255, 255, 0.7);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.footer-column h4 {
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: white;
}

.footer-column ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

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

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

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

@keyframes morphing {
  0%, 100% {
    border-radius: 50% 40% 60% 30%;
  }
  25% {
    border-radius: 30% 60% 40% 50%;
  }
  50% {
    border-radius: 40% 30% 50% 60%;
  }
  75% {
    border-radius: 60% 50% 30% 40%;
  }
}

@keyframes pulse {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.2;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 0.3;
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

.fade-in {
  opacity: 1;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.6s ease-out;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.6s ease-out;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}