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

:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #5a5a7a;
  --color-primary: #2b5ea7;
  --color-primary-dark: #1e4278;
  --color-accent: #3a7bd5;
  --color-header: #0f172a;
  --color-hero-bg: #101828;
  --color-border: #e2e4e9;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 70px;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Header ─── */

#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-header);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  padding: 8px;
}

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

.nav-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: #fff;
}

/* ─── Hero ─── */

#hero {
  background: var(--color-hero-bg);
  color: #fff;
  padding: 160px 24px 100px;
  text-align: center;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

#hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.hero-tagline {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 36px;
}

.btn-primary {
  display: inline-block;
  padding: 14px 36px;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ─── Sections ─── */

section {
  padding: 80px 0;
}

section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-intro {
  color: var(--color-text-muted);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

/* ─── Om mig ─── */

#om-mig {
  background: var(--color-surface);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.skills h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.skill-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.skill-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.skill-list i {
  color: var(--color-primary);
  width: 20px;
  text-align: center;
  font-size: 1rem;
}

/* ─── Projekt ─── */

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.project-card .thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #eef0f4;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-card .thumb-container canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.project-card .thumb-container .loading-spinner {
  position: absolute;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.project-card .thumb-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}

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

.thumb-overlay span {
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 24px;
  border: 2px solid #fff;
  border-radius: var(--radius);
}

.project-card .card-body {
  padding: 16px 20px;
}

.project-card .card-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.project-card .card-body p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ─── Kontakt ─── */

#kontakt {
  background: var(--color-surface);
}

.contact-grid {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: nowrap;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 32px 24px;
  flex: 1;
  min-width: 0;
  background: var(--color-bg);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.contact-card i {
  font-size: 1.8rem;
  color: var(--color-primary);
}

.contact-card span {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* ─── Footer ─── */

footer {
  background: var(--color-header);
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
  padding: 24px 0;
  font-size: 0.85rem;
}

/* ─── Responsive ─── */

@media (max-width: 900px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-card {
    padding: 24px 12px;
  }
}

@media (max-width: 600px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-header);
    flex-direction: column;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .nav-links.open {
    max-height: 300px;
  }

  .nav-links li {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-links a {
    display: block;
    padding: 16px 24px;
  }

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

  #hero {
    padding: 130px 24px 70px;
  }

  section {
    padding: 60px 0;
  }
}