/* ==========================================================================
   Maarten Grasso — Persoonlijke portfolio en reflectiewebsite
   Strak en minimalistisch. Wit, zwart en grijswaarden. Geen kleur.
   ========================================================================== */

/* --- Design tokens ------------------------------------------------------- */
:root {
  --white:      #ffffff;
  --black:      #0a0a0a;
  --gray-900:   #1a1a1a;
  --gray-700:   #3d3d3d;
  --gray-500:   #6b6b6b;
  --gray-400:   #9a9a9a;
  --gray-300:   #cfcfcf;
  --gray-200:   #e6e6e6;
  --gray-100:   #f3f3f3;

  --font-head: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, -apple-system, sans-serif;

  --space-2xs: 0.5rem;
  --space-xs:  0.85rem;
  --space-sm:  1.25rem;
  --space-md:  2rem;
  --space-lg:  3.5rem;
  --space-xl:  5.5rem;
  --space-2xl: 8.5rem;

  --max-width: 1120px;
  --measure:   40rem;
  --header-h:  72px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 0.25s var(--ease);
  --t: 0.5s var(--ease);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--black);
  font-size: clamp(1.02rem, 0.45vw + 0.9rem, 1.16rem);
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::selection { background: var(--black); color: var(--white); }

:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 3px;
}

/* --- Headings ------------------------------------------------------------ */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--black);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

/* --- Typografie helpers -------------------------------------------------- */
.display {
  font-family: var(--font-head);
  font-size: clamp(3rem, 11vw, 7.5rem);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.045em;
}

.page-title {
  font-size: clamp(2.3rem, 6.5vw, 4.6rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.h-section {
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.lead {
  font-size: clamp(1.2rem, 1.1vw + 0.95rem, 1.5rem);
  line-height: 1.5;
  color: var(--gray-900);
  font-weight: 400;
  letter-spacing: -0.015em;
}

/* --- Layout helpers ------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section { padding-block: var(--space-xl); }

.divider { height: 1px; background: var(--gray-200); border: 0; }

.prose { max-width: var(--measure); }
.prose p { margin-bottom: 1.4em; }
.prose p:last-child { margin-bottom: 0; }

/* --- Skip link ----------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 200;
  background: var(--black);
  color: var(--white);
  padding: 0.65rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: top var(--t-fast);
}
.skip-link:focus { top: 1rem; }

/* --- Header / navigatie -------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(120%) blur(12px);
  -webkit-backdrop-filter: saturate(120%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast);
}
.site-header.is-scrolled { border-bottom-color: var(--gray-200); }

.header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--black);
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 2.6vw, 2.4rem);
}

.nav a {
  position: relative;
  font-family: var(--font-body);
  font-size: 0.97rem;
  font-weight: 500;
  color: var(--gray-700);
  padding-block: 0.35rem;
  transition: color var(--t-fast);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1.5px;
  background: var(--black);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast);
}

.nav a:hover,
.nav a[aria-current="page"] { color: var(--black); }
.nav a:hover::after,
.nav a[aria-current="page"]::after { transform: scaleX(1); }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 130;
}
.nav-toggle .bar {
  display: block;
  width: 26px;
  height: 2px;
  margin-left: auto;
  background: var(--black);
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.nav-toggle.is-open .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.is-open .bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobiel overlay menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--white);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) clamp(1.5rem, 8vw, 4rem);
  z-index: 120;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t), visibility var(--t);
}
.mobile-menu.is-open { opacity: 1; visibility: visible; }
.mobile-menu a {
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 8vw, 3rem);
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.03em;
}
.mobile-menu a[aria-current="page"] {
  text-decoration: underline;
  text-underline-offset: 8px;
  text-decoration-thickness: 2px;
}

/* --- Tekstlink ----------------------------------------------------------- */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--black);
  border-bottom: 2px solid var(--black);
  padding-bottom: 2px;
  transition: gap var(--t-fast), opacity var(--t-fast);
}
.text-link:hover { gap: 0.8rem; opacity: 0.7; }
.text-link svg { transition: transform var(--t-fast); }
.text-link:hover svg { transform: translateX(3px); }

/* --- Hero (voorpagina) --------------------------------------------------- */
.hero { padding-block: clamp(3.5rem, 9vw, 7rem) var(--space-lg); }
.hero__eyebrow { margin-bottom: var(--space-sm); }
.hero__name { margin-bottom: var(--space-lg); }

.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(2rem, 6vw, 4.5rem);
  padding-top: var(--space-md);
  border-top: 1px solid var(--gray-200);
}

.fact { display: flex; flex-direction: column; gap: 0.3rem; }
.fact__label {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-500);
  font-weight: 600;
}
.fact__value {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--black);
}

/* --- Fotogrid ------------------------------------------------------------ */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(0.75rem, 1.6vw, 1.4rem);
}
.photo {
  overflow: hidden;
  background: var(--gray-100);
}
.photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center;
  filter: grayscale(100%) contrast(1.02);
}

/* --- Page hero (interieurpagina's) --------------------------------------- */
.page-hero { padding-block: clamp(3rem, 7vw, 5.5rem) var(--space-md); }
.page-hero__title { margin-top: var(--space-sm); }
.page-hero__lead { margin-top: var(--space-md); max-width: var(--measure); }

/* --- Over mij: portret naast tekst --------------------------------------- */
.intro-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: start;
}
@media (min-width: 880px) {
  .intro-split { grid-template-columns: 1.7fr 1fr; gap: var(--space-xl); }
  .intro-split__text { grid-column: 1; grid-row: 1; }
  .intro-split__media { grid-column: 2; grid-row: 1; }
}
.portrait { overflow: hidden; background: var(--gray-100); }
.portrait img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; filter: grayscale(100%) contrast(1.02); }
.portrait__caption {
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--gray-500);
  margin-top: var(--space-2xs);
  letter-spacing: 0.04em;
}
@media (min-width: 880px) {
  .portrait { position: sticky; top: calc(var(--header-h) + var(--space-md)); }
}

/* --- Pull quote ---------------------------------------------------------- */
.pullquote {
  margin: var(--space-lg) 0;
  padding-left: var(--space-md);
  border-left: 3px solid var(--black);
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  line-height: 1.25;
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--black);
  max-width: 34rem;
}

/* --- Genummerde ontwikkeldoelen ------------------------------------------ */
.goal {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
  padding-block: var(--space-lg);
  border-top: 1px solid var(--gray-200);
}
@media (min-width: 820px) {
  .goal { grid-template-columns: 200px 1fr; gap: var(--space-lg); }
}
.goal__head { position: relative; }
.goal__num {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--black);
  display: block;
}
.goal__title { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 600; margin-top: var(--space-2xs); letter-spacing: -0.03em; }
@media (min-width: 820px) {
  .goal__head { position: sticky; top: calc(var(--header-h) + var(--space-md)); align-self: start; }
}

.conclusion {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--black);
}
.conclusion .h-section { margin-bottom: var(--space-sm); }

/* --- Subkop binnen een pagina -------------------------------------------- */
.subhead {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-top: var(--space-md);
  border-top: 2px solid var(--black);
}
.subhead .eyebrow { margin-bottom: var(--space-2xs); }

/* --- Docenten ------------------------------------------------------------ */
.person { padding-block: var(--space-lg); border-top: 1px solid var(--gray-200); }
.person__name { font-size: clamp(1.6rem, 3.2vw, 2.2rem); font-weight: 600; letter-spacing: -0.03em; }
.person__role {
  margin-top: 0.25rem;
  margin-bottom: var(--space-sm);
  color: var(--gray-500);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
}
.person__text { max-width: var(--measure); margin-bottom: var(--space-md); }

/* --- Footer -------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--gray-200);
  padding-block: var(--space-lg);
  margin-top: var(--space-xl);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-md);
}
.footer-brand { font-family: var(--font-head); font-size: 1.4rem; font-weight: 700; letter-spacing: -0.03em; color: var(--black); }
.footer-meta { margin-top: 0.4rem; font-size: 0.9rem; color: var(--gray-500); }
.footer-nav { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.footer-nav a { font-size: 0.94rem; color: var(--gray-700); transition: color var(--t-fast); }
.footer-nav a:hover { color: var(--black); }

/* --- Entree (rustig, alleen koppen) -------------------------------------- */
.reveal { opacity: 1; transform: none; }
@media (prefers-reduced-motion: no-preference) {
  .hero .reveal,
  .page-hero .reveal { animation: loadFade 0.6s var(--ease) both; }
  .reveal[data-delay="1"] { animation-delay: 0.05s; }
  .reveal[data-delay="2"] { animation-delay: 0.1s; }
  .reveal[data-delay="3"] { animation-delay: 0.15s; }
}
@keyframes loadFade {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 900px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 600px) {
  .photo-grid { grid-template-columns: 1fr; gap: var(--space-sm); }
  .photo img { aspect-ratio: 5 / 6; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .hero__facts { gap: var(--space-md); }
}

/* --- Reduced motion ------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}