/* CSS Custom Properties (Variables) */
:root {
  /* Colors */
  --color-primary: #ff0000;
  --color-primary-dark: #cc0000;
  --color-primary-light: #ff3333;
  --color-background: #000000;
  --color-background-secondary: #111111;
  --color-text-primary: #ffffff;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-border: #ff0000;
  --color-border-light: #333333;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50%;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(255, 0, 0, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-preloader: 9999;
}

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

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

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

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

/* Preloader */
.preloader {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--color-background);
  z-index: var(--z-preloader);
  opacity: 1;
  transition: opacity var(--transition-normal);
}

.preloader.is-hidden {
  opacity: 0;
  pointer-events: none;
}

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

.ghost-animation {
  position: relative;
  margin-bottom: var(--space-lg);
}

.ghost-body {
  width: 80px;
  height: 80px;
  background: var(--color-primary);
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  position: relative;
  animation: float 2s ease-in-out infinite;
}

.ghost-eye {
  position: absolute;
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  top: 25px;
}

.ghost-eye.left {
  left: 20px;
}

.ghost-eye.right {
  right: 20px;
}

.ghost-mouth {
  position: absolute;
  width: 20px;
  height: 10px;
  border: 2px solid white;
  border-top: none;
  border-radius: 0 0 20px 20px;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
}

.ghost-shadow {
  width: 80px;
  height: 20px;
  background: rgba(255, 0, 0, 0.3);
  border-radius: 50%;
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  animation: shadow-pulse 2s ease-in-out infinite;
}

.loading-text {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

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

@keyframes shadow-pulse {
  0%, 100% { opacity: 0.3; transform: translateX(-50%) scale(1); }
  50% { opacity: 0.1; transform: translateX(-50%) scale(0.8); }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.brand-logo {
  border-radius: var(--radius-full);
}

.brand-text {
  font-weight: 800;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-fast);
}

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

.nav-link {
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  outline: none;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

.btn-login {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.8rem;
}

.btn-full {
  width: 100%;
}

.btn-loading {
  display: none;
}

.btn.loading .btn-text {
  display: none;
}

.btn.loading .btn-loading {
  display: inline;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  background: var(--color-background);
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.highlight {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

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

.geometric-shapes {
  position: relative;
  width: 300px;
  height: 300px;
}

.shape {
  position: absolute;
  background: var(--color-primary);
  opacity: 0.1;
}

.shape-1 {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  top: 50px;
  left: 50px;
}

.shape-2 {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-full);
  top: 100px;
  right: 50px;
}

.shape-3 {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-full);
  bottom: 50px;
  left: 100px;
}

/* Section Styles */
section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-primary);
  font-weight: 400;
}

/* About Section */
.about {
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about-text h3 {
  font-size: 1.75rem;
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
  font-weight: 600;
}

.about-text p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  font-size: 1.125rem;
  line-height: 1.7;
}

.skills-container {
  margin-top: var(--space-2xl);
}

.skill-item {
  margin-bottom: var(--space-xl);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.skill-name {
  font-weight: 600;
  color: var(--color-text-primary);
}

.skill-percentage {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
}

.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: width 1s ease;
  width: 0;
}

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

.image-container {
  position: relative;
  width: 300px;
  height: 300px;
  border-radius: var(--radius-full);
  overflow: hidden;
  border: 4px solid var(--color-primary);
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 0, 0, 0.1) 100%);
  pointer-events: none;
}

/* Services Section */
.services {
  background: var(--color-background);
}

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

.service-card {
  background: var(--color-background);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 0, 0, 0.1), transparent);
  transition: left 0.5s ease;
}

.service-card:hover::before {
  left: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
  background: var(--color-background-secondary);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

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

.service-card p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Projects Section */
.projects {
  background: var(--color-background);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.project-card {
  background: var(--color-background);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  position: relative;
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
  background: var(--color-background-secondary);
}

.project-image {
  height: 250px;
  background: var(--color-background-secondary);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
  text-align: center;
  padding: var(--space-xl);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-overlay h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: white;
  font-weight: 600;
}

.project-overlay p {
  margin-bottom: var(--space-lg);
  color: white;
}

.project-actions {
  display: flex;
  gap: var(--space-md);
}

.project-link {
  padding: var(--space-sm) var(--space-lg);
  background: white;
  color: var(--color-primary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

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

/* Contact Section */
.contact {
  background: var(--color-background);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

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

.contact-details h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
  font-weight: 600;
}

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

.contact-form {
  background: var(--color-background);
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 0, 0, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-error {
  color: var(--color-primary);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
  display: none;
}

.form-input:invalid:not(:placeholder-shown) + .form-error,
.form-textarea:invalid:not(:placeholder-shown) + .form-error {
  display: block;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(5px);
}

.modal-content {
  position: relative;
  background: var(--color-background);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  border: 1px solid var(--color-border);
  animation: modalSlideIn 0.3s ease;
}

.modal-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-primary);
}

.modal-header {
  padding: var(--space-2xl) var(--space-2xl) var(--space-lg);
  text-align: center;
}

.modal-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
  font-weight: 600;
}

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

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

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(-20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Footer */
.footer {
  background: var(--color-background);
  padding: var(--space-3xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.footer-logo {
  border-radius: var(--radius-full);
}

.footer-nav {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
}

.footer-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-social {
  display: flex;
  gap: var(--space-lg);
  justify-content: flex-end;
}

.social-link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 100%;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.95);
    width: 100%;
    text-align: center;
    transition: left var(--transition-normal);
    padding: var(--space-xl) 0;
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--color-border);
  }
  
  .nav-menu.is-open {
    left: 0;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-2xl);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg);
  }
  
  .footer-nav {
    justify-content: center;
  }
  
  .footer-social {
    justify-content: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 200px;
  }
  
  .services-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* 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 */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .navbar,
  .footer,
  .modal,
  .preloader {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .hero,
  .about,
  .services,
  .projects,
  .contact {
    break-inside: avoid;
  }
}