/* ============================================
   bjelm.se — Design System
   Inspired by jlofstedt.com + mastra.ai
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- Custom Properties --- */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-card-hover: rgba(255, 255, 255, 0.15);

  --text-primary: #f5f5f5;
  --text-secondary: rgba(255, 255, 255, 0.55);
  --text-tertiary: rgba(255, 255, 255, 0.35);

  --accent-blue: #3b82f6;
  --accent-blue-glow: rgba(59, 130, 246, 0.15);
  --accent-green: #10b981;
  --accent-purple: #8b5cf6;

  --glow-edge: radial-gradient(ellipse at 0% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --max-width: 1100px;
  --section-gap: 140px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* --- Ambient Edge Glow (jlofstedt.com style) --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--glow-edge);
  pointer-events: none;
  z-index: 9999;
}

/* --- Particle Canvas --- */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

section {
  position: relative;
  z-index: 1;
  padding: var(--section-gap) 0;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: var(--transition-base);
  backdrop-filter: blur(0px);
}

.nav.scrolled {
  backdrop-filter: blur(20px);
  background: rgba(10, 10, 10, 0.8);
  border-bottom: 1px solid var(--border-card);
}

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

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 400;
  transition: color var(--transition-fast);
  letter-spacing: 0.01em;
}

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

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
}

.hero-greeting {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  color: var(--text-primary);
  background: linear-gradient(135deg, var(--text-primary) 0%, rgba(255, 255, 255, 0.6) 50%, var(--text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 650px;
  margin-bottom: 16px;
}

.hero-subtitle strong {
  color: var(--text-primary);
  font-weight: 600;
}

.hero-summary {
  font-size: 1.05rem;
  color: var(--text-tertiary);
  line-height: 1.7;
  max-width: 620px;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-lg);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  position: relative;
}

.btn-primary:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

.btn-glow {
  animation: btnPulse 3s ease-in-out infinite;
}

@keyframes btnPulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(245, 245, 245, 0);
  }

  50% {
    box-shadow: 0 0 20px 2px rgba(245, 245, 245, 0.08);
  }
}

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

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

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* --- Section Headers --- */
.section-header {
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-blue);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 550px;
  line-height: 1.7;
}

/* --- About Section --- */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 750px;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* --- Experience Section --- */
.experience-timeline {
  position: relative;
  padding-left: 32px;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-blue), var(--border-card));
  transform-origin: top;
  animation: drawLine 1.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes drawLine {
  from {
    transform: scaleY(0);
  }

  to {
    transform: scaleY(1);
  }
}

.experience-item {
  position: relative;
  padding-bottom: 56px;
}

.experience-item:last-child {
  padding-bottom: 0;
}

.experience-item::before {
  content: '';
  position: absolute;
  left: -36px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 12px var(--accent-blue-glow);
}

.experience-item:not(:first-child)::before {
  background: var(--text-tertiary);
  box-shadow: none;
}

.experience-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.experience-company {
  font-size: 0.85rem;
  color: var(--accent-blue);
  font-weight: 500;
}

.experience-date {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.experience-location {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.experience-role {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.experience-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 16px;
}

.experience-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  font-weight: 400;
  transition: all var(--transition-base);
}

.tag:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: var(--accent-blue-glow);
  transform: translateY(-1px);
}

/* --- Skills Section (Bento Grid) --- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.skill-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.skill-card:hover::after {
  opacity: 1;
}

.skill-card-icon {
  font-size: 1.5rem;
  margin-bottom: 16px;
  display: block;
}

.skill-card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.skill-card-items {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* --- Education Section --- */
.education-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.education-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.education-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.education-years {
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-weight: 500;
  margin-bottom: 12px;
}

.education-school {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.education-location {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.education-degree {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.education-focus {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* --- Contact Section --- */
.contact-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all var(--transition-base);
}

.contact-link:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-blue);
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.1);
}

.contact-link:hover svg {
  color: var(--accent-blue);
}

.contact-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-card);
  position: relative;
  z-index: 1;
}

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

.footer-text {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* --- Certifications Section --- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-blue);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.cert-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  transform: translateY(-2px);
}

.cert-card:hover::before {
  opacity: 1;
}

.cert-year {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-blue);
  background: var(--accent-blue-glow);
  padding: 2px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.cert-name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.cert-issuer {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.cert-desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.4;
}

/* --- Scroll Reveal Animation --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

.reveal-delay-4 {
  transition-delay: 0.4s;
}

.reveal-delay-5 {
  transition-delay: 0.5s;
}

/* --- Hero Entrance Animations --- */
.anim-hero-text {
  opacity: 0;
  transform: translateY(40px);
  animation: heroTextReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
}

@keyframes heroTextReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.anim-hero-text.animate-shimmer {
  animation: heroTextReveal 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards,
    textShimmer 4s ease-in-out 1.5s infinite;
}

@keyframes textShimmer {

  0%,
  100% {
    background-position: 0% center;
  }

  50% {
    background-position: 200% center;
  }
}

.anim-fade-up {
  opacity: 0;
  transform: translateY(25px);
  animation: fadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) var(--anim-delay, 0s) forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Tag Stagger Animation --- */
.tag-stagger .tag {
  opacity: 0;
  transform: translateY(8px) scale(0.95);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.tag-stagger.visible .tag {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --section-gap: 80px;
  }

  .container {
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 85vh;
  }

  .hero-greeting {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
  }

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

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

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

  .hero-cta {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-links {
    flex-direction: column;
  }

  .footer-content {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-greeting {
    font-size: 2rem;
  }

  .experience-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}