/* ============================================
   ARTHUR NELISSEN — Portfolio CSS
   Aesthetic: Cinematic dark · editorial · bold
   ============================================ */

:root {
  --black: #0a0a0a;
  --dark: #111111;
  --dark-mid: #1a1a1a;
  --mid: #2a2a2a;
  --accent: #4a90d4;
  --accent-warm: #c8a96e;
  --white: #f4f0eb;
  --white-dim: rgba(244,240,235,0.6);
  --white-faint: rgba(244,240,235,0.1);

  --font-display: 'Bebas Neue', sans-serif;
  --font-serif: 'DM Serif Display', serif;
  --font-body: 'DM Sans', sans-serif;

  --nav-h: 72px;
  --radius: 2px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  z-index: 1000;
  background: linear-gradient(to bottom, rgba(10,10,10,0.95) 0%, transparent 100%);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(244,240,235,0.06);
  transition: background 0.3s;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.12em;
  color: var(--white);
}

.nav__logo-an {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-size: 1rem;
  letter-spacing: 0.05em;
}

.nav__links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav__links a {
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  color: var(--white-dim);
  transition: color 0.2s;
  position: relative;
  padding-bottom: 4px;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.3s;
}

.nav__links a:hover { color: var(--white); }
.nav__links a:hover::after { width: 100%; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--white);
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================================================
   PAGES — show/hide system
   ============================================================ */
.page {
  display: none;
  min-height: 100vh;
  padding-top: var(--nav-h);
}
.page.active { display: block; }

/* ============================================================
   HOME — HERO
   ============================================================ */
.hero {
  position: relative;
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(2rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--black);
}

/* Filmstrip decoration */
.hero__filmstrip {
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: clamp(280px, 40vw, 520px);
  display: flex;
  flex-direction: column;
  opacity: 0.6;
}

.filmstrip__track {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 8px 0;
  background: #1c1c1c;
  flex-shrink: 0;
}

.filmstrip__hole {
  width: 18px; height: 14px;
  border-radius: 3px;
  background: var(--black);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}

.filmstrip__frames {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: #1c1c1c;
  padding: 4px;
  overflow: hidden;
}

.filmstrip__frame {
  flex: 1;
  background-size: cover;
  background-position: center;
  filter: grayscale(40%);
  transition: filter 0.5s;
  animation: filmScroll 20s linear infinite;
}

@keyframes filmScroll {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* Hero content */
.hero__content {
  position: relative;
  z-index: 2;
  padding: clamp(2rem, 6vw, 6rem) clamp(1.5rem, 8vw, 8rem);
  max-width: 800px;
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: clamp(0.75rem, 1.2vw, 0.9rem);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s ease forwards;
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(5rem, 13vw, 14rem);
  line-height: 0.88;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s ease forwards;
}

.hero__name em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-warm);
}

.hero__roles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s ease forwards;
}

.role-sep {
  color: var(--white-dim);
  font-size: 0.8rem;
}

.role-btn {
  font-family: var(--font-display);
  font-size: clamp(0.75rem, 1.5vw, 0.95rem);
  letter-spacing: 0.12em;
  color: var(--white-dim);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.role-btn:hover, .role-btn--active {
  color: var(--white);
  border-color: var(--accent);
}

/* ============================================================
   BUTTON
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  padding: 14px 36px;
  border: 1.5px solid var(--accent);
  color: var(--white);
  background: transparent;
  transition: background 0.25s, color 0.25s, transform 0.2s;
  cursor: pointer;
}

.btn:hover {
  background: var(--accent);
  color: var(--black);
  transform: translateY(-1px);
}

.btn--light {
  border-color: var(--white);
  color: var(--black);
  background: var(--white);
}

.btn--light:hover {
  background: transparent;
  color: var(--white);
}

/* ============================================================
   TOOLS STRIP
   ============================================================ */
.tools {
  padding: 3rem clamp(1.5rem, 5vw, 4rem);
  border-top: 1px solid var(--white-faint);
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.tools__label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  color: var(--white-dim);
  white-space: nowrap;
  flex-shrink: 0;
}

.tools__logos {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.tools__logos img {
  width: auto;
  height: 40px;
  object-fit: contain;
  filter: grayscale(100%) brightness(0.8);
  opacity: 0.5;
  transition: filter 0.3s, opacity 0.3s;
}

.tools__logos img:hover {
  filter: grayscale(0%) brightness(1);
  opacity: 1;
}

/* ============================================================
   WORKED WITH — scrolling logo strip
   ============================================================ */
.worked-with {
  padding: 5rem clamp(1.5rem, 5vw, 4rem);
  border-top: 1px solid var(--white-faint);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 2rem);
  letter-spacing: 0.2em;
  color: var(--white-dim);
  margin-bottom: 2.5rem;
}

.logo-scroll {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.logo-scroll__inner {
  display: flex;
  align-items: center;
  gap: 3rem;
  width: max-content;
  animation: scrollLogos 30s linear infinite;
}

.logo-scroll__inner img {
  height: 50px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%) brightness(1.5);
  opacity: 0.4;
  transition: opacity 0.3s, filter 0.3s;
}

.logo-scroll__inner img:hover {
  opacity: 0.9;
  filter: grayscale(0%);
}

@keyframes scrollLogos {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  padding: 6rem clamp(1.5rem, 5vw, 4rem);
  border-top: 1px solid var(--white-faint);
  background: linear-gradient(135deg, var(--dark) 0%, #0d1520 100%);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2rem;
}

.cta-band h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 4rem);
  letter-spacing: 0.05em;
  line-height: 1.1;
  color: var(--white);
}

.cta-band h2 em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-warm);
}

/* ============================================================
   HOME PORTFOLIO SECTION
   ============================================================ */
.home-portfolio {
  border-top: 1px solid var(--white-faint);
}

.home-portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(clamp(260px, 30vw, 380px), 1fr));
  gap: 2px;
  padding: 2px;
}

/* ============================================================
   PORTFOLIO PAGE (kept for reference, hidden by default)
   ============================================================ */

.page-header {
  padding: 4rem clamp(1.5rem, 5vw, 4rem) 2rem;
  border-bottom: 1px solid var(--white-faint);
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 6rem);
  letter-spacing: 0.1em;
  color: var(--white);
}

.portfolio-tabs {
  padding: 1.5rem clamp(1.5rem, 5vw, 4rem);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--white-faint);
}

.tab-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  padding: 8px 20px;
  color: var(--white-dim);
  border: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.tab-btn:hover {
  color: var(--white);
  border-color: var(--white-faint);
}

.tab-btn--active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(74, 144, 212, 0.08);
}

/* Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(clamp(260px, 30vw, 380px), 1fr));
  gap: 2px;
  padding: 2px;
}

.portfolio-card {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  cursor: pointer;
  background: var(--dark-mid);
}

.portfolio-card.hidden {
  display: none;
}

.portfolio-card__img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease, filter 0.5s;
  filter: brightness(0.75) saturate(0.9);
}

.portfolio-card:hover .portfolio-card__img {
  transform: scale(1.05);
  filter: brightness(0.55) saturate(1.1);
}

.portfolio-card__info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 1.5rem 1.25rem 1.25rem;
  background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 100%);
  transform: translateY(4px);
  transition: transform 0.3s;
}

.portfolio-card:hover .portfolio-card__info {
  transform: translateY(0);
}

.card__cat {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}

.portfolio-card__info h3 {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  letter-spacing: 0.05em;
  color: var(--white);
}

.card__year {
  font-size: 0.75rem;
  color: var(--white-dim);
  margin-top: 0.25rem;
  display: block;
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.page--about {
  background: var(--black);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--nav-h));
}

.about-photo {
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.about-photo__frame {
  flex: 1;
  overflow: hidden;
}

.about-photo__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%);
  transition: filter 0.5s;
}

.about-photo:hover .about-photo__frame img {
  filter: grayscale(0%);
}

.about-photo__label {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--white-dim);
  background: var(--dark-mid);
  border-top: 1px solid var(--white-faint);
}

.about-text {
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5rem);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  border-left: 1px solid var(--white-faint);
}

.about-heading {
  font-family: var(--font-display);
  font-size: clamp(4rem, 7vw, 7rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
}

.about-heading em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-warm);
}

.about-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.about-body p {
  font-size: clamp(0.9rem, 1.3vw, 1rem);
  line-height: 1.8;
  color: var(--white-dim);
}

.about-body p strong { color: var(--white); font-weight: 500; }

.about-subheading {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-top: 1rem;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.page--contact {
  background: var(--black);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--nav-h));
}

.contact-left {
  padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 5vw, 5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--dark);
}

.contact-heading {
  font-family: var(--font-display);
  font-size: clamp(5rem, 10vw, 10rem);
  line-height: 0.88;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
}

.contact-heading em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--accent-warm);
  display: block;
}

.contact-sub {
  font-size: clamp(0.9rem, 1.3vw, 1.1rem);
  color: var(--white-dim);
  max-width: 320px;
  line-height: 1.7;
}

.contact-right {
  padding: clamp(4rem, 8vw, 8rem) clamp(2rem, 5vw, 5rem);
  display: flex;
  align-items: center;
  border-left: 1px solid var(--white-faint);
}

.contact-card {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--white-faint);
}

.contact-item__label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.contact-item__value {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--white);
  font-weight: 300;
}

.contact-item__link {
  transition: color 0.2s;
}

.contact-item__link:hover {
  color: var(--accent);
}

/* ============================================================
   PROJECT DETAIL OVERLAY
   ============================================================ */
.project-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5,5,5,0.97);
  overflow-y: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s;
}

.project-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.project-overlay__inner {
  max-width: 900px;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 2rem) 2rem 4rem;
  position: relative;
}

.project-overlay__close {
  position: fixed;
  top: 1.5rem; right: 2rem;
  font-size: 1.5rem;
  color: var(--white-dim);
  transition: color 0.2s, transform 0.2s;
  z-index: 10;
}

.project-overlay__close:hover {
  color: var(--white);
  transform: rotate(90deg);
}

/* Project content styles */
.project-content__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 2.5rem;
  cursor: pointer;
  transition: gap 0.2s;
}

.project-content__back:hover { gap: 0.75rem; }

.project-content__back svg {
  width: 14px; height: 14px; fill: currentColor;
}

.project-content__hero {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  margin-bottom: 2.5rem;
}

.project-content__hero-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  margin-bottom: 2.5rem;
}

.project-content__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: 0.05em;
  line-height: 1;
  margin-bottom: 2rem;
}

.project-content__meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--white-faint);
}

.project-content__meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--accent);
}

.meta-value {
  font-size: 0.9rem;
  color: var(--white-dim);
}

.project-content__body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.project-content__body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--white-dim);
}

.project-content__body p strong { color: var(--white); font-weight: 500; }
.project-content__body em { font-style: italic; }

.project-content__video {
  margin-top: 2.5rem;
  aspect-ratio: 16/9;
  width: 100%;
}

.project-content__video iframe {
  width: 100%; height: 100%;
  border: none;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 2rem clamp(1.5rem, 5vw, 4rem);
  border-top: 1px solid var(--white-faint);
  background: var(--dark);
}

.footer__left {
  display: flex;
  flex-direction: column;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--white);
}

.footer__tagline {
  font-size: 0.75rem;
  color: var(--white-dim);
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--white-dim);
  transition: color 0.2s;
}

.footer__links a:hover { color: var(--white); }

.footer__right {
  font-size: 0.8rem;
  color: var(--white-dim);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .about-photo {
    position: relative;
    top: auto;
    height: 60vw;
    max-height: 400px;
  }

  .about-text {
    border-left: none;
    border-top: 1px solid var(--white-faint);
  }

  .contact-right {
    border-left: none;
    border-top: 1px solid var(--white-faint);
  }

  .hero__filmstrip {
    opacity: 0.15;
  }
}

@media (max-width: 700px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(10,10,10,0.98);
    backdrop-filter: blur(12px);
    padding: 1rem 0 2rem;
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    border-bottom: 1px solid var(--white-faint);
  }

  .nav__links.open {
    transform: translateY(0);
  }

  .nav__links li { width: 100%; }

  .nav__links a {
    display: block;
    padding: 1rem clamp(1.5rem, 5vw, 4rem);
    font-size: 1.5rem;
  }

  .nav__toggle { display: flex; }

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

  .portfolio-card {
    aspect-ratio: 16/10;
  }

  .hero__filmstrip { display: none; }

  .hero__content {
    padding: 2rem 1.5rem;
  }

  .cta-band { align-items: center; text-align: center; }
}