/* === PARS PRO IMAGINE — Serie I | 2026 === */

@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-Regular.woff2") format("woff2");
  font-style: normal; font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("./assets/fonts/IBMPlexSans-Light.woff2") format("woff2");
  font-style: normal; font-weight: 300; font-display: swap;
}

/* === THEME === */
[data-theme="dark"] {
  --color-background:   #0e0e0e;
  --color-surface:      #161616;
  --color-text:         #ffffff;
  --color-muted:        #ffffff;
  --color-muted-ui:     #a0a09a;
  --color-border:       #2e2e2a;
  --color-toggle-bg:    #2a2a26;
  --color-toggle-icon:  #ffffff;
  --hero-vignette:      radial-gradient(ellipse at center, transparent 55%, rgba(14,14,14,0.55) 100%);
  --group-dark-bg:      #0e0e0e;
  --group-light-bg:     #f0efeb;
  --group-dark-text:    #ffffff;
  --group-light-text:   #111110;
  --logo-filter:        brightness(0) invert(1);
}
[data-theme="light"] {
  --color-background:   #f4f3ef;
  --color-surface:      #eeede9;
  --color-text:         #111110;
  --color-muted:        #111110;
  --color-muted-ui:     #6a6a64;
  --color-border:       #ccccc6;
  --color-toggle-bg:    #e0dfd9;
  --color-toggle-icon:  #111110;
  --hero-vignette:      radial-gradient(ellipse at center, transparent 55%, rgba(244,243,239,0.55) 100%);
  --group-dark-bg:      #111110;
  --group-light-bg:     #f4f3ef;
  --group-dark-text:    #ffffff;
  --group-light-text:   #111110;
  --logo-filter:        none;
}

:root {
  --max-width:     1480px;
  --text-width:    680px;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --space-xs: 0.8rem; --space-sm: 1rem; --space-md: 2rem;
  --space-lg: 4rem;   --space-xl: 6rem; --space-xxl: 8rem;
  --font-main: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --reveal-duration: 1800ms;
  --reveal-easing:   cubic-bezier(0.25, 0.1, 0.25, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-main);
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 700ms var(--ease-out-expo), color 700ms var(--ease-out-expo);
}
:focus-visible { outline: 1px solid var(--color-text); outline-offset: 4px; }
img { display: block; width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
p { margin-top: 0; margin-bottom: 1rem; }
figure { margin: 0; }

/* === HEADER === */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.4rem 4vw;
  background: color-mix(in srgb, var(--color-background) 84%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: background 700ms var(--ease-out-expo);
}

/* === BRAND LINK === */
.brand-link {
  display: flex; align-items: center; gap: 0.85rem;
  text-decoration: none; cursor: pointer;
  transition: opacity 400ms ease;
}
.brand-link:hover { opacity: 0.72; }
.brand-logo {
  width: auto; height: 30px; display: block; flex-shrink: 0;
  filter: var(--logo-filter);
  transition: filter 700ms var(--ease-out-expo);
}
.brand {
  font-size: 0.72rem; font-weight: 400;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--color-text); white-space: nowrap;
  transition: color 700ms var(--ease-out-expo);
}

/* === NAV === */
.main-nav { display: flex; gap: 2.5rem; }
.main-nav a {
  font-size: 0.68rem; font-weight: 400;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text); transition: opacity 400ms ease;
}
.main-nav a:hover { opacity: 0.6; }

/* === THEME TOGGLE === */
.theme-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-toggle-bg);
  cursor: pointer; padding: 0; flex-shrink: 0;
  transition: background 700ms var(--ease-out-expo), border-color 700ms var(--ease-out-expo);
}
.theme-toggle:hover { border-color: var(--color-muted); }
.theme-toggle-icon {
  display: block; width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-toggle-icon);
  transition: background 700ms var(--ease-out-expo);
}
[data-theme="light"] .theme-toggle-icon {
  clip-path: inset(0 40% 0 0); transform: rotate(-30deg);
}

/* === HERO === */
.hero-section {
  width: min(88vw, var(--max-width));
  margin: 3rem auto 6rem auto;
}
.hero-frame {
  position: relative; background: var(--color-surface); overflow: hidden;
  transition: background 700ms var(--ease-out-expo);
}
.hero-frame::after {
  content: ""; position: absolute; inset: 0;
  background: var(--hero-vignette); pointer-events: none;
  transition: background 700ms var(--ease-out-expo); z-index: 1;
}
.hero-strip-wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
  touch-action: pan-y;
}
.hero-strip {
  display: flex; flex-direction: row;
  transition: transform 700ms cubic-bezier(0.77, 0, 0.18, 1);
  will-change: transform;
}
.hero-strip-image {
  flex: 0 0 100%; width: 100%;
  aspect-ratio: 16 / 9; object-fit: cover;
  max-height: 74vh; display: block;
}

/* === SLIDER NAV === */
.slider-navigation {
  display: flex; align-items: center; gap: 0;
  margin-top: 1.5rem; padding-left: 0.1rem;
}
.slider-btn {
  display: flex; align-items: center; justify-content: center;
  background: none; border: none; padding: 0.5rem 0.3rem;
  cursor: pointer; width: 52px; height: 20px;
  position: relative; flex-shrink: 0;
}
.slider-btn:focus-visible { outline: 1px solid var(--color-text); outline-offset: 2px; border-radius: 1px; }
.slider-btn::after {
  content: ""; display: block; width: 100%; height: 1px;
  background: var(--color-muted-ui);
  transition: background 500ms ease, width 500ms ease, height 500ms ease;
}
.slider-btn[aria-current="true"]::after {
  width: 7px; height: 7px; background: var(--color-text); border-radius: 0;
}

/* === INTRO === */
.intro-section { width: min(var(--text-width), 88vw); margin: 0 auto var(--space-xxl); }
.intro-title {
  font-size: 0.72rem; font-weight: 400; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--color-muted); margin-bottom: 1.8rem;
}
.intro-text { font-size: 1.05rem; font-weight: 300; line-height: 1.8; color: var(--color-text); max-width: 42ch; }

/* === SERIE INFO === */
.serie-info-section {
  width: min(88vw, var(--max-width));
  margin: 0 auto 0.8rem auto;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: border-color 700ms var(--ease-out-expo);
}
.serie-info-inner { width: min(var(--text-width), 100%); }
.serie-info-heading {
  margin-top: 0; margin-bottom: 2rem;
  font-size: 0.72rem; font-weight: 400;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text);
}
.serie-info-text {
  font-size: 0.9rem; font-weight: 300; line-height: 1.8;
  color: var(--color-text); margin-bottom: 0.8rem;
}
.serie-info-text:last-child { margin-bottom: 0; }

/* === EXHIBITION BANNER === */
.exhibition-banner {
  width: min(88vw, var(--max-width));
  margin: 1.5rem auto 3rem auto;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  transition: border-color 700ms var(--ease-out-expo);
}
.exhibition-banner-inner {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto;
  align-items: center;
}
.exhibition-col { display: flex; flex-direction: column; gap: 0.5rem; padding: var(--space-sm) var(--space-md); }
.exhibition-divider { width: 1px; align-self: stretch; background: var(--color-border); transition: background 700ms var(--ease-out-expo); }
.exhibition-label { font-size: 0.60rem; font-weight: 400; letter-spacing: 0.18em; text-transform: uppercase; color: var(--color-muted-ui); }
.exhibition-value { font-size: 1rem; font-weight: 300; color: var(--color-text); line-height: 1.4; }
.exhibition-festival-link {
  font-size: 1rem; font-weight: 400; color: var(--color-text); line-height: 1.4;
  text-decoration: underline; text-decoration-color: var(--color-border);
  text-underline-offset: 4px;
  transition: text-decoration-color 350ms ease, opacity 350ms ease;
}
.exhibition-festival-link:hover { text-decoration-color: var(--color-text); opacity: 0.72; }
.exhibition-logo-slot { padding: var(--space-sm) var(--space-md); display: flex; align-items: center; }

/* === SERIES SECTION === */
.series-section { width: 100%; margin: 0; }

/* === IMAGE GROUPS === */
.image-group {
  width: 100%; padding: 2.5rem min(6vw, 6rem) 3rem;
  transition: background-color 700ms var(--ease-out-expo), color 700ms var(--ease-out-expo);
}
.image-group--dark  { background-color: var(--group-dark-bg);  color: var(--group-dark-text); }
.image-group--light { background-color: var(--group-light-bg); color: var(--group-light-text); }
.image-group--dark  .image-code, .image-group--dark  figcaption { color: rgba(255,255,255,0.5); }
.image-group--light .image-code, .image-group--light figcaption { color: rgba(17,17,16,0.45); }

/* === IMAGE BLOCK === */
.image-block { max-width: var(--max-width); margin: 0 auto; position: relative; }
.image-block:nth-child(even)  { width: 90%; margin-left: auto; }
.image-block:nth-child(3n)    { width: 84%; margin-right: auto; margin-left: 0; }

.main-image-frame {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
}
.main-image {
  width: 100%; max-height: 78vh; object-fit: contain; display: block;
  transition: transform 2000ms cubic-bezier(0.1, 0, 0.2, 1);
}
.main-image-frame:hover .main-image { transform: scale(1.012); }

.image-code {
  margin-top: 1.4rem;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.support-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
  width: 100%;
}

.support-image {
  display: flex;
  flex-direction: column;
}

.support-image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.support-image-b figcaption {
  text-align: left;
}

.support-image-overview figcaption {
  text-align: right;
}

figcaption {
  margin-top: 0.9rem;
  font-size: 0.76rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* === INFO / KONTAKT === */
.info-section {
  margin-top: 6rem;
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  transition: border-color 700ms var(--ease-out-expo);
}
.info-inner { width: min(var(--text-width), 88vw); margin: 0 auto; }
.info-heading {
  margin-top: 0; margin-bottom: 2.5rem;
  font-size: 0.72rem; font-weight: 400;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text);
}
.info-contact { margin: 0; }
.contact-mail {
  font-size: 0.9rem; font-weight: 300; color: var(--color-text);
  text-decoration: underline; text-decoration-color: var(--color-border);
  text-underline-offset: 4px; cursor: pointer;
  transition: text-decoration-color 350ms ease, opacity 350ms ease;
}
.contact-mail:hover { text-decoration-color: var(--color-text); opacity: 0.72; }
.mail-part, .mail-at, .mail-tld { font-size: inherit; font-weight: inherit; }



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

.contact-image img {
  width: 100%;
  max-width: 520px;
  object-fit: cover;
}

/* === BACK TO TOP === */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-toggle-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 400ms var(--ease-out-expo),
    transform 400ms var(--ease-out-expo),
    background 700ms var(--ease-out-expo),
    border-color 700ms var(--ease-out-expo);
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  border-color: var(--color-muted);
  background: var(--color-surface);
}
.btn-arrow-head, .btn-arrow-shaft {
  fill: var(--color-toggle-icon);
  transition: fill 700ms var(--ease-out-expo);
}

/* === FOOTER === */
.site-footer {
  padding: 2rem 4vw;
  border-top: 1px solid var(--color-border);
  transition: border-color 700ms var(--ease-out-expo);
}
.site-footer p {
  margin: 0; font-size: 0.66rem; font-weight: 400;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-muted-ui);
}

/* === REVEAL === */
.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity var(--reveal-duration) var(--reveal-easing), transform var(--reveal-duration) var(--reveal-easing);
  will-change: opacity, transform;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal.delay-1 { transition-delay: 100ms; }
.reveal.delay-2 { transition-delay: 280ms; }
.reveal.delay-3 { transition-delay: 480ms; }

/* === MOBILE === */
@media (max-width: 900px) {
  .site-header { padding: 1.2rem 5vw; }
  .main-nav { gap: 1.5rem; }
  .brand-logo { height: 22px; }
  .hero-section { width: min(92vw, 1320px); margin: 4rem auto 8rem auto; }
  .support-images { grid-template-columns: 1fr; gap: 1.8rem; width: 100%; }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .image-group { padding: var(--space-lg) 5vw; }
  .image-block:nth-child(even), .image-block:nth-child(3n) { width: 100%; margin-left: 0; margin-right: 0; }
  .slider-btn { width: 36px; }
  .exhibition-banner-inner { grid-template-columns: 1fr; }
  .exhibition-divider { width: auto; height: 1px; align-self: auto; }
  .exhibition-col { padding: 0.9rem var(--space-sm); }
  .back-to-top { bottom: 1.2rem; right: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}