/* ===== ROOT VARIABLES & DESIGN TOKENS ===== */
:root {
  /* Primary Colors - Dark Techy Gradient */
  --primary: #00d4ff;
  --primary-dark: #0099cc;
  --primary-light: #e0f7ff;

  /* Accent Colors - Vibrant Cyan/Purple */
  --accent: #7c3aed;
  --accent-light: #f5e6ff;

  /* Neutrals - Dark Theme */
  --background: #0a0e27;
  --surface: #151b2f;
  --foreground: #e0e0ff;
  --text-secondary: #a0a5c0;
  --border: #2a3550;
  --divider: #1a2040;

  /* Dark Mode */
  --bg-dark: #050812;
  --surface-dark: #0f1420;
  --text-dark: #ffffff;

  /* 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;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "Courier New", monospace;
  --font-size-base: 1rem;
  --line-height-base: 1.6;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* 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, 0.15);

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

/* ===== RESET & GLOBAL 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: var(--line-height-base);
  color: var(--foreground);
  background-color: var(--background);
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(10, 14, 39, 0.95) 0%, rgba(21, 27, 47, 0.85) 100%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.1);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

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

.nav-link {
  position: relative;
  color: var(--primary-light);
  font-weight: 500;
  text-decoration: none;
  padding-bottom: 4px;
  transition: all 0.3s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  transition: width 0.3s ease;
  border-radius: 2px;
}

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

.nav-link:hover {
  color: transparent;
  background-image: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.nav-link.active {
  color: transparent;
  background-image: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  background-clip: text;
  -webkit-background-clip: text;
}

.nav-link.active::after {
  width: 100%;
  height: 3px;
  background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  border-radius: 2px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--foreground);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* ===== HERO SECTION ===== */
.hero-inner {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #050812 0%, #0f1420 100%);
}

.parallax-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 1;
  opacity: 0.3;
  filter: brightness(0.4) contrast(1.1);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  max-width: 900px;
  padding: var(--spacing-xl);
}

.hero-inner h1 {
  color: #00d4ff;
  margin-bottom: var(--spacing-md);
}

.hero-inner p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* ===== PORTFOLIO SECTION ===== */
.portfolio-section {
  padding: var(--spacing-3xl) var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
}

.portfolio-category {
  margin-bottom: var(--spacing-3xl);
}

.portfolio-category:last-child {
  margin-bottom: 0;
}

/* Category header styling */
.category-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 0.8s ease-out;
}

.category-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: #00d4ff;
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
}

.category-title::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #00d4ff, #7c3aed);
  margin: var(--spacing-md) auto 0;
  border-radius: 2px;
}

.category-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 0;
}

/* Portfolio grid layout */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

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

.social-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.design-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Portfolio card styling with hover effects */
.portfolio-card {
  position: relative;
  height: 350px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: flex-end;
  background: linear-gradient(135deg, rgba(21, 27, 47, 0.8) 0%, rgba(26, 32, 64, 0.6) 100%);
  border: 2px solid var(--border);
  backdrop-filter: blur(10px);
}

.portfolio-card:hover {
  transform: translateY(-10px);
  border-color: #00d4ff;
  box-shadow: 0 20px 50px rgba(0, 212, 255, 0.3);
}

.card-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
  transition: transform var(--transition-base);
}

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

.card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.9) 50%, rgba(10, 14, 39, 0.95) 100%);
  z-index: 2;
  display: flex;
  align-items: flex-end;
  opacity: 1;
  transition: opacity var(--transition-base);
}

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

.card-content {
  padding: var(--spacing-xl);
  width: 100%;
  color: white;
  animation: slideUpIn 0.6s ease-out;
}

.card-content h3 {
  color: #00d4ff;
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.card-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--spacing-md);
}

.visit-btn {
  display: inline-block;
  color: #00d4ff;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.website-card:hover .visit-btn {
  transform: translateX(5px);
}

.platform-badge,
.design-badge {
  display: inline-block;
  background: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== CTA SECTION ===== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #050812 0%, #0f1420 50%, #1a1f35 100%);
  color: white;
  text-align: center;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: var(--spacing-xl);
}

.cta-section h2 {
  color: #00d4ff;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-lg);
}

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(180deg, #050812 0%, #0f1420 100%);
  color: var(--foreground);
  padding: var(--spacing-3xl) var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  max-width: 1200px;
  margin: 0 auto var(--spacing-2xl);
}

.footer-section h3,
.footer-section h4 {
  color: #00d4ff;
  margin-bottom: var(--spacing-md);
}

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

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--primary-light);
}

.social-links {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
  border: 2px solid #00d4ff;
  transition: all var(--transition-base);
}

.social-links a:hover {
  background: linear-gradient(135deg, #00d4ff, #7c3aed);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

@keyframes slideUpIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ===== INTERSECTION OBSERVER ANIMATIONS ===== */
.portfolio-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.portfolio-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== WEBSITE PREVIEW MODAL ===== */
.preview-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.preview-modal.active {
  display: flex;
  opacity: 1;
}

.modal-content {
  background: linear-gradient(135deg, rgba(21, 27, 47, 0.95) 0%, rgba(26, 32, 64, 0.95) 100%);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 1000px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2);
  animation: slideUp 0.5s ease-out;
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  color: #00d4ff;
  margin: 0;
  font-size: 1.5rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--foreground);
  font-size: 2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: #00d4ff;
}

.modal-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

#preview-iframe {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-md);
}

.modal-footer {
  padding: var(--spacing-lg) var(--spacing-xl);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-lg);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
  }

  .nav-menu.active {
    display: flex;
  }

  .hamburger {
    display: flex;
  }

  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .category-title {
    font-size: 1.75rem;
  }

  .hero-inner {
    height: 300px;
  }

  .hero-inner h1 {
    font-size: 1.75rem;
  }

  .cta-section {
    min-height: 250px;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }
}

/* ===== RESPONSIVE MODAL ===== */
@media (max-width: 768px) {
  .modal-content {
    max-width: 100%;
    height: 85vh;
  }

  .modal-header h2 {
    font-size: 1.25rem;
  }

  .modal-header {
    padding: var(--spacing-lg);
  }

  .modal-footer {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  body {
    font-size: 0.95rem;
  }

  .portfolio-section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .portfolio-card {
    height: 300px;
  }

  .category-title {
    font-size: 1.5rem;
  }

  .category-header {
    margin-bottom: var(--spacing-lg);
  }

  .portfolio-category {
    margin-bottom: var(--spacing-2xl);
  }

  .hero-inner {
    height: 250px;
  }

  .hero-inner h1 {
    font-size: 1.5rem;
  }

  .hero-inner p {
    font-size: 0.95rem;
  }

  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.95rem;
  }

  .card-content {
    padding: var(--spacing-lg);
  }

  .card-content h3 {
    font-size: 1.1rem;
  }

  .footer-content {
    gap: var(--spacing-lg);
  }

  .footer-section h3,
  .footer-section h4 {
    font-size: 1rem;
  }

  .footer-section p,
  .footer-section a {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  .modal-content {
    height: 80vh;
  }

  .modal-header h2 {
    font-size: 1rem;
  }

  .modal-close {
    font-size: 1.5rem;
    width: 32px;
    height: 32px;
  }

  .modal-footer {
    flex-direction: column;
  }

  .modal-footer .btn {
    width: 100%;
  }
}

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