:root {
  /* Personal Brand: Mathias Duell */
  --personal-deep: #0D1B2A; /* Deep Navy Authority */
  --personal-accent: #3A6EA5; /* Intellectual Blue */
  --personal-subtle: #8D99AE; /* Tactical Grey */
  --bg-personal: #FFFFFF;
  --bg-alt: #F8F9FA;
  
  --text-main: #14213D;
  --text-soft: #4A5568;
  --border-light: #E2E8F0;

  /* Spacing & Typography */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius-sm: 8px;
  --container-width: 900px;
}

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

body {
  font-family: var(--font-body);
  color: var(--text-main);
  line-height: 1.7;
  background-color: var(--bg-personal);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2rem;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
}

/* NAVIGATION */
nav {
  padding: 3rem 0;
}

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

/* LANGUAGE TOGGLE */
.lang-switch {
  display: flex;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 800;
}

.lang-btn {
  cursor: pointer;
  opacity: 0.3;
  transition: opacity 0.3s ease;
  user-select: none;
}

.lang-btn.active {
  opacity: 1;
  color: var(--personal-accent);
}

[lang="en"] .sv, [lang="sv"] .en {
  display: none !important;
}

.brand-link {
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--personal-deep);
  letter-spacing: -2px;
}

.nav-links a {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-soft);
  margin-left: 2.5rem;
  transition: color 0.3s ease;
}

.nav-links a:hover { color: var(--personal-accent); }

/* HERO */
.hero {
  padding: 8rem 0 10rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  align-items: center;
  gap: 4rem;
}

.hero-portrait {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--bg-alt);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.1);
}

.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-tag {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--personal-accent);
  margin-bottom: 2rem;
  display: block;
}

.hero-title {
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  margin-bottom: 3rem;
  color: var(--personal-deep);
}

.hero-sub {
  font-size: 1.6rem;
  color: var(--text-soft);
  max-width: 650px;
  font-weight: 300;
  line-height: 1.4;
}

/* SECTIONS */
section {
  padding: 8rem 0;
}

.section-label {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--personal-subtle);
  margin-bottom: 1.5rem;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.lecture-grid {
  display: grid;
  gap: 4rem;
}

.lecture-item h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.lecture-item p {
  font-size: 1.1rem;
  color: var(--text-soft);
}

/* ECOSYSTEM BRIDGE */
.bridge {
  background: var(--bg-alt);
  border-radius: 20px;
  padding: 4rem;
}

.bridge-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.project-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.project-card:hover { opacity: 0.6; }

.project-card h4 {
  font-size: 1.3rem;
  color: var(--personal-deep);
}

/* FOOTER */
footer {
  padding: 6rem 0 4rem;
  border-top: 1px solid var(--border-light);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  color: var(--text-soft);
  font-size: 0.9rem;
}

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

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .hero-title { font-size: 3.5rem; }
  .bridge { padding: 2rem; }
}