/* ============================================================
   Wiebke Hungrichhaußen — Personal One-Pager
   Dark variant: black background, photos & logo stay in full color,
   photos get an added grain texture
   ============================================================ */

:root {
  --color-bg: #0A0A0A;
  --color-bg-alt: #141414;
  --color-surface: #1B1B1B;
  --color-text: #FFFFFF;
  --color-heading: #FFFFFF;
  --color-accent: #4830e6;
  --color-accent-dark: #764fce;
  --color-line: #2A2A2A;
  --color-footer-bg: #000000;
  --color-footer-text: #FFFFFF;

  --font-serif: "Fraunces", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container-width: 1120px;
  --section-padding: 64px;

  --fs-xs: 0.85rem;
  --fs-sm: 0.95rem;
  --fs-md: 1rem;
  --fs-lg: 1.15rem;
  --fs-h3: 1.4rem;
  --fs-h2: clamp(1.8rem, 3vw, 2.6rem);
  --fs-h1: clamp(2.4rem, 5vw, 4.2rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Offset anchor targets so the sticky nav doesn't cover the top of the section */
#hero, #work, #how-i-work, #testimonial, #career, #tools, #contact {
  scroll-margin-top: 90px;
}

/* ---------- Grain overlay ---------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  opacity: 0.11;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: grain-shift 1s steps(4) infinite;
}

@keyframes grain-shift {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-1%, 1%); }
  50% { transform: translate(1%, -1%); }
  75% { transform: translate(-1%, -1%); }
}

@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

.container.narrow {
  max-width: 780px;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-heading);
  margin: 0 0 24px;
  letter-spacing: -0.01em;
}

h1 {
  font-size: var(--fs-h1);
  line-height: 1.12;
  font-weight: 400;
}

h2 {
  font-size: var(--fs-h2);
  line-height: 1.2;
}

h3 {
  font-size: var(--fs-h3);
  margin-bottom: 12px;
}

p { margin: 0 0 16px; }

a { color: inherit; }

ul, ol { margin: 0; padding: 0; list-style: none; }

/* ---------- Eyebrow labels ---------- */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 16px;
  font-weight: 600;
}

/* ---------- Nav ---------- */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}

.nav-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.nav-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--fs-md);
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo {
  height: 28px;
  width: auto;
  display: block;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 3px;
  flex-shrink: 0;
}

.lang-btn {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  background: transparent;
  color: var(--color-text);
  opacity: 0.5;
  border: none;
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
  transition: opacity 0.2s ease, background 0.2s ease;
}

.lang-btn:hover { opacity: 0.8; }

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

.site-nav nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.site-nav nav a {
  text-decoration: none;
  font-size: var(--fs-sm);
  color: var(--color-text);
  transition: opacity 0.2s ease;
}

.site-nav nav a:hover { opacity: 0.6; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover { background: var(--color-accent-dark); }

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

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

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 var(--section-padding);
}

.hero-grid {
  display: grid;
  position: relative;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: auto auto;
  column-gap: 64px;
  row-gap: 0;
}

.hero-grid h1 {
  grid-column: 1;
  grid-row: 1;
}

.hero-body {
  grid-column: 1;
  grid-row: 2;
  max-width: 620px;
}

.hero-subline {
  font-size: var(--fs-lg);
  color: var(--color-text);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-portrait {
  position: absolute;
  grid-column: 2;
  grid-row: 1;
  inset: 0;
  border-radius: 6px;
  overflow: hidden;
}

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

.hero-portrait::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: grain-shift 1s steps(4) infinite;
}

/* ---------- Work / Case Studies ---------- */
.work { padding: var(--section-padding) 0; border-top: 1px solid var(--color-line); }

.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--color-line);
}

.case-study:first-of-type {
  border-top: none;
  padding-top: 0;
}

.case-study:last-child { padding-bottom: 0; }

.case-study--reverse .case-visual { order: 2; }
.case-study--reverse .case-content { order: 1; }

.case-visual {
  aspect-ratio: 4 / 3;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--color-surface), var(--color-bg-alt));
  position: relative;
  overflow: hidden;
}

.case-visual:not(:has(img))::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(72, 48, 230, 0.22), transparent 60%);
}

.case-study--stacked {
  grid-template-columns: 1fr;
  gap: 32px;
}

.case-study--stacked .case-visual--one {
  aspect-ratio: 20 / 9;
}

.case-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.case-label {
  font-size: var(--fs-xs);
  color: var(--color-text);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

/* ---------- How I Work ---------- */
.how-i-work {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.lead-text {
  font-size: var(--fs-lg);
  color: var(--color-text);
}

.how-i-work-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: center;
  max-width: 1000px;
}

.how-i-work-image {
  border-radius: 6px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  position: relative;
}

.how-i-work-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.how-i-work-image::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  animation: grain-shift 1s steps(4) infinite;
}

/* ---------- Testimonial ---------- */
.testimonial {
  padding: var(--section-padding) 0;
  background: #C9B8F0;
  text-align: center;
}

.testimonial .container.narrow {
  max-width: 1040px;
}

.testimonial .eyebrow { color: #3D2A86; }

.testimonial blockquote {
  margin: 0 0 24px;
  padding: 0;
}

.testimonial blockquote p {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 400;
  font-size: var(--fs-lg);
  line-height: 1.7;
  color: #1A1330;
  margin: 0;
}

.quote-mark {
  font-family: var(--font-serif);
  font-size: 1.3em;
  line-height: 1;
  color: #3D2A86;
  vertical-align: baseline;
}

.testimonial-attribution {
  font-size: var(--fs-sm);
  color: #3D2A86;
  font-weight: 600;
  margin: 0;
}

/* ---------- Career ---------- */
.career { padding: var(--section-padding) 0; }

.timeline { margin-bottom: 48px; }

.timeline-item {
  padding: 32px 0;
  border-top: 1px solid var(--color-line);
}

.timeline-item:first-child {
  border-top: none;
  padding-top: 0;
}

.timeline-item:last-child { border-bottom: 1px solid var(--color-line); }

.timeline-date {
  font-size: var(--fs-xs);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}

.timeline-org {
  color: var(--color-text);
  font-size: var(--fs-sm);
  margin-bottom: 10px;
}

/* ---------- Tools ---------- */
.tools {
  padding: var(--section-padding) 0;
  background: var(--color-accent);
}

.tools-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.tools-list li {
  padding: 10px 20px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: var(--fs-sm);
  background: var(--color-bg);
}

/* ---------- Footer / Contact ---------- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--section-padding) 0 56px;
}

.site-footer h2 { color: var(--color-footer-text); }

.footer-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 32px 0 56px;
}

.site-footer .btn-secondary {
  border-color: var(--color-footer-text);
  color: var(--color-footer-text);
}

.site-footer .btn-secondary:hover {
  background: var(--color-footer-text);
  color: var(--color-footer-bg);
}

.legal {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 24px;
  margin-bottom: 40px;
}

.legal summary {
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--color-footer-text);
  letter-spacing: 0.02em;
}

.legal-content {
  margin-top: 20px;
  font-size: var(--fs-xs);
  color: var(--color-footer-text);
  max-width: 560px;
}

.legal-content h4 {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-footer-text);
  margin: 20px 0 8px;
}

.legal-content h4:first-child { margin-top: 0; }

.footer-copy {
  font-size: var(--fs-xs);
  color: var(--color-footer-text);
  margin: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  :root { --section-padding: 44px; }

  .container { padding: 0 24px; }

  .nav-inner { padding: 16px 24px; }

  .site-nav nav { gap: 16px; }

  .hero { padding: 60px 0 var(--section-padding); }

  .case-study {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .case-study--reverse .case-visual { order: 1; }
  .case-study--reverse .case-content { order: 2; }

  .hero-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    row-gap: 24px;
  }

  .hero-grid h1,
  .hero-portrait,
  .hero-body {
    grid-column: 1;
    grid-row: auto;
  }

  .hero-portrait { position: static; order: 1; max-width: 340px; aspect-ratio: 4 / 5; }
  .hero-grid h1 { order: 2; }
  .hero-body { max-width: 100%; order: 3; }

  .how-i-work-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .how-i-work-image { max-width: 340px; }
}

@media (max-width: 700px) {
  .nav-toggle { display: flex; }

  .site-nav nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    padding: 8px 24px 20px;
  }

  .site-nav nav.is-open { display: flex; }

  .site-nav nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-line);
  }

  .site-nav nav a:last-child { border-bottom: none; }

  .site-nav nav .lang-toggle {
    align-self: center;
    margin: 16px 0 4px;
  }

  .nav-inner { position: relative; }
}