/* Modern EdTech Developer Portfolio CSS - Professional Tech Theme */
:root {
  --primary-color: #2563eb;
  --secondary-color: #1d4ed8;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --background: #ffffff;
  --surface: #f8fafc;
  --border: #e2e8f0;
  --accent: #3b82f6;
  --success: #10b981;
  --warning: #f59e0b;
  --tech-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --edtech-blue: #1e40af;
  --code-bg: #f1f5f9;
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-tech: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 10px 10px -5px rgb(0 0 0 / 0.04);
  --radius: 8px;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background);
  font-size: 16px;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.navbar {
  background: var(--tech-gradient);
  color: white;
  padding: 1rem 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  box-shadow: var(--shadow-tech);
  backdrop-filter: blur(10px);
}

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

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.navbar-nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.navbar-nav a:hover {
  opacity: 0.8;
}

/* Mobile Navigation */
.navbar-toggle {
  display: none;
  background: none;
  border: 2px solid white;
  color: white;
  padding: 0.5rem;
  border-radius: var(--radius);
  cursor: pointer;
}

/* Main Content */
main {
  margin-top: 80px;
  padding: 1rem 0;
}

/* Hero Section */
.hero {
  padding: 3rem 0;
  background: linear-gradient(135deg, var(--surface) 0%, white 50%, var(--code-bg) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
  opacity: 0.3;
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero-text h2 {
  font-size: 1.5rem;
  background: var(--tech-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-text .location {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.hero-text .email {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

.hero-image img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-tech);
  border: 4px solid white;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image img:hover {
  transform: scale(1.05);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Sections */
.section {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--tech-gradient);
  border-radius: 2px;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.skill-category {
  background: var(--surface);
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--tech-gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-tech);
  border-color: var(--accent);
}

.skill-category:hover::before {
  transform: scaleX(1);
}

.skill-category h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.skill-category ul {
  list-style: none;
}

.skill-category li {
  padding: 0.25rem 0;
  color: var(--text-secondary);
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  position: relative;
}

.card:hover {
  box-shadow: var(--shadow-tech);
  transform: translateY(-2px);
  border-color: var(--accent);
}

/* Lists */
.achievement-list {
  list-style: none;
}

.achievement-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 1.5rem;
}

.achievement-list li:last-child {
  border-bottom: none;
}

.achievement-list li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: bold;
}

/* Footer */
footer {
  background: var(--tech-gradient);
  color: white;
  padding: 2rem 0;
  text-align: center;
  position: relative;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: white;
  font-size: 1.5rem;
  transition: opacity 0.2s;
}

.social-links a:hover {
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar-brand {
    font-size: 1.1rem;
    max-width: 60%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--tech-gradient);
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
  }

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

  .navbar-toggle {
    display: block;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .hero-text h1 {
    font-size: 2.5rem;
  }

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

  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .social-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
  }

  .social-links a {
    font-size: 0.9rem;
    padding: 0.5rem;
    min-width: 80px;
    text-align: center;
  }
}

/* Tablet Responsiveness */
@media (max-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .hero-content {
    gap: 2rem;
  }
  
  .hero-image img {
    width: 180px;
    height: 180px;
  }
}

/* Mobile Landscape - Enhanced */
@media (max-width: 768px) {
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-text h2 {
    font-size: 1.25rem;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .skill-category {
    padding: 1rem;
  }
  
  .card {
    padding: 1rem;
  }
  
  .resume-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .resume-buttons .btn {
    width: 100%;
    text-align: center;
  }
}

/* Mobile Portrait - Optimized */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .navbar-brand {
    font-size: 1rem;
    max-width: 50%;
  }

  .navbar-toggle {
    padding: 0.4rem;
    font-size: 0.9rem;
  }

  .hero {
    padding: 1.5rem 0;
  }
  
  .hero::before {
    opacity: 0.1;
  }

  .hero-text h1 {
    font-size: 2rem;
    line-height: 1.2;
  }
  
  .hero-text h2 {
    font-size: 1.125rem;
  }
  
  .hero-image img {
    width: 150px;
    height: 150px;
  }

  .section {
    padding: 1.5rem 0;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .skill-category h3 {
    font-size: 1rem;
  }
  
  .achievement-list {
    font-size: 0.9rem;
  }
  
  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  .social-links {
    gap: 0.5rem;
  }

  .social-links a {
    font-size: 0.8rem;
    padding: 0.4rem;
    min-width: 70px;
  }
}

/* Extra Small Devices */
@media (max-width: 320px) {
  .navbar-brand {
    font-size: 0.9rem;
    max-width: 45%;
  }

  .navbar-toggle {
    padding: 0.3rem;
    font-size: 0.8rem;
  }

  .hero-text h1 {
    font-size: 1.75rem;
  }
  
  .hero-image img {
    width: 120px;
    height: 120px;
  }
  
  .container {
    padding: 0 0.75rem;
  }
  
  .card, .skill-category {
    padding: 0.75rem;
  }

  .social-links {
    gap: 0.4rem;
  }

  .social-links a {
    font-size: 0.75rem;
    padding: 0.3rem;
    min-width: 60px;
  }

  .footer-content p {
    font-size: 0.9rem;
  }
}

/* Utilities */
.text-center { text-align: center; }
.text-primary { 
  background: var(--tech-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-secondary { color: var(--text-secondary); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.hidden { display: none; }

/* EdTech Specific Enhancements */
.tech-badge {
  display: inline-block;
  background: var(--code-bg);
  color: var(--edtech-blue);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.tech-badge:hover {
  background: var(--accent);
  color: white;
  transform: translateY(-1px);
}

.gradient-text {
  background: var(--tech-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Norwegian Flag Colors for Local Appeal */
.norway-accent {
  background: linear-gradient(45deg, #ef2b2d, #ffffff, #002868);
  height: 3px;
  width: 100%;
  margin: 1rem 0;
}

/* Professional Loading State */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Performance & Accessibility Enhancements */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-in {
  animation: slideInUp 0.6s ease-out;
}

/* Focus States for Accessibility */
.btn:focus,
.navbar-nav a:focus,
.email:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --text-secondary: #000000;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .resume-buttons,
  footer {
    display: none;
  }
  
  .hero {
    padding: 1rem 0;
  }
  
  .hero::before {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
  }
  
  .section {
    page-break-inside: avoid;
  }
}

/* Contact Modal (if needed) */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: white;
  padding: 2rem;
  border-radius: var(--radius);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
}

.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--tech-gradient);
  color: white;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary::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 0.5s;
}

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

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background: var(--text-secondary);
  color: white;
}

.resume-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.resume-buttons .btn {
  flex: 1;
  min-width: 150px;
  text-align: center;
}