/* ==========================================================================
   Optiek De Clerck — Shared Design System
   Foundation every page of optiekdeclerck.be links to.
   ========================================================================== */

/* Design tokens ----------------------------------------------------------- */
:root {
  /* Palette — ink + paper */
  --color-ink: #1a1a1a;
  --color-paper: #ffffff;
  --color-text: #262626;
  --color-muted: #6b6b6b;

  /* Palette — warm neutrals (signature) */
  --color-cream: #f9f9f9;
  --color-warm-cream: #f2ede4;
  --color-champagne: #bbae94;
  --color-brass: #a8843a;
  --color-warm-gold: #9d885c;

  /* Palette — accent (single CTA) */
  --color-cta: #0993d1;
  --color-cta-hover: #0676a8;

  /* Palette — borders */
  --color-border: #e2e2e2;
  --color-border-strong: #cccccc;
  --color-divider: #eceeef;

  /* Aliases (back-compat with source tokens) */
  --color-1: var(--color-ink);
  --color-2: var(--color-champagne);
  --color-3: var(--color-cream);
  --color-4: var(--color-paper);
  --color-5: var(--color-border);
  --color-bg: var(--color-paper);
  --color-title: var(--color-ink);

  /* Typography — families */
  --font-display: "Cormorant Garamond", "GT Super", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Arial, sans-serif;
  --font-mono: "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  /* Typography — scale (modular, mobile-first) */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;
  --fs-4xl: 4rem;
  --fs-5xl: 5rem;

  /* Typography — line height */
  --lh-tight: 1.1;
  --lh-snug: 1.25;
  --lh-normal: 1.5;
  --lh-loose: 1.75;

  /* Typography — weights */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Typography — letter-spacing */
  --ls-tight: -0.02em;
  --ls-normal: 0;
  --ls-wide: 0.04em;
  --ls-widest: 0.16em;

  /* Spacing scale (8px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  /* Layout */
  --container: 1140px;
  --container-wide: 1320px;
  --container-narrow: 720px;
  --gutter: 1.5rem;
  --gutter-wide: 2rem;

  /* Radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.16);

  /* Motion — durations */
  --dur-fast: 200ms;
  --dur-base: 400ms;
  --dur-slow: 800ms;
  --dur-slower: 1200ms;

  /* Motion — easings (matches reference bounce curve) */
  --ease-out: cubic-bezier(0.215, 0.61, 0.355, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.755, 0.05, 0.855, 0.06);

  /* Chrome */
  --header-height: 88px;
  --header-height-mobile: 64px;

  /* Z-index scale */
  --z-base: 1;
  --z-sticky: 100;
  --z-overlay: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* Base reset -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, picture, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }
input, textarea, select, button { font: inherit; color: inherit; }
:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Typography -------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--fw-regular);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--color-ink);
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 {
  font-size: var(--fs-lg);
  font-family: var(--font-body);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-normal);
}

@media (min-width: 720px) {
  h1 { font-size: var(--fs-4xl); }
  h2 { font-size: var(--fs-3xl); }
}
@media (min-width: 960px) {
  h1 { font-size: var(--fs-5xl); }
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-warm-gold);
  border-top: 1px solid var(--color-brass);
  padding-top: var(--space-2);
}

.lead {
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
  color: var(--color-muted);
  max-width: 60ch;
}

.text-small { font-size: var(--fs-sm); }
.text-mono { font-family: var(--font-mono); }
.text-muted { color: var(--color-muted); }
.text-center { text-align: center; }

/* Layout helpers ---------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

.section {
  padding-block: var(--space-8);
}
.section--lg { padding-block: var(--space-10); }
.section--tight { padding-block: var(--space-6); }
.section--cream { background: var(--color-warm-cream); }
.section--tint { background: var(--color-cream); }

.stack > * + * { margin-top: var(--space-4); }
.stack-lg > * + * { margin-top: var(--space-6); }

.grid {
  display: grid;
  gap: var(--space-5);
}
.grid--2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.flex { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.flex--between { justify-content: space-between; align-items: center; }
.flex--center { justify-content: center; align-items: center; }

/* Buttons ----------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
}
.btn-primary:hover {
  background: var(--color-cta);
  border-color: var(--color-cta);
}

.btn-secondary {
  background: var(--color-paper);
  color: var(--color-ink);
  border-color: var(--color-ink);
}
.btn-secondary:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: transparent;
  padding-inline: 0;
}
.btn-ghost:hover { color: var(--color-cta); }

.btn-brass {
  background: var(--color-brass);
  color: var(--color-paper);
  border-color: var(--color-brass);
}
.btn-brass:hover {
  background: var(--color-warm-gold);
  border-color: var(--color-warm-gold);
}

.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--fs-xs); }
.btn--lg { padding: var(--space-4) var(--space-6); font-size: var(--fs-base); }

/* Card -------------------------------------------------------------------- */
.card {
  display: flex;
  flex-direction: column;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-cream);
}
.card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}
.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  color: var(--color-ink);
  line-height: var(--lh-snug);
}
.card__copy {
  font-size: var(--fs-sm);
  color: var(--color-muted);
  line-height: var(--lh-normal);
}
.card__footer {
  margin-top: auto;
  padding-top: var(--space-3);
}

/* Site header chrome ------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: saturate(180%) blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height-mobile);
  gap: var(--space-4);
}

.site-brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  letter-spacing: var(--ls-tight);
  color: var(--color-ink);
}
.site-brand__mark {
  font-weight: var(--fw-regular);
  transition: color var(--dur-fast) var(--ease-out);
}
.site-brand__sub {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-warm-gold);
  margin-top: var(--space-1);
}

/* Site nav ---------------------------------------------------------------- */
.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-4);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-nav__link {
  display: inline-block;
  padding: var(--space-2) 0;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-normal);
  color: var(--color-text);
  position: relative;
  transition: color var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--color-brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"] {
  color: var(--color-ink);
}
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-header__cta {
  margin-left: var(--space-3);
}

/* Mobile toggle (hamburger) ---------------------------------------------- */
.site-nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: 0;
}
.site-nav__toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-ink);
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

@media (min-width: 1024px) {
  .site-header__inner { min-height: var(--header-height); }
  .site-nav { display: flex; }
  .site-nav__toggle { display: none; }
}

/* Mobile drawer state */
.site-nav.is-open {
  display: flex;
  position: fixed;
  inset: var(--header-height-mobile) 0 0 0;
  z-index: var(--z-overlay);
  flex-direction: column;
  background: var(--color-paper);
  padding: var(--space-6) var(--gutter);
  overflow-y: auto;
  animation: slideInDown var(--dur-base) var(--ease-out);
}
.site-nav.is-open .site-nav__list {
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
  width: 100%;
}
.site-nav.is-open .site-nav__link {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.site-nav.is-open .site-header__cta {
  margin-top: var(--space-5);
  margin-inline: auto;
}

/* Site footer chrome ------------------------------------------------------ */
.site-footer {
  background: var(--color-ink);
  color: var(--color-cream);
  padding-block: var(--space-8) var(--space-5);
  margin-top: var(--space-9);
}

.site-footer a {
  color: inherit;
  transition: color var(--dur-fast) var(--ease-out);
}
.site-footer a:hover { color: var(--color-champagne); }

.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--space-5);
  }
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  letter-spacing: var(--ls-tight);
  color: var(--color-paper);
  margin-bottom: var(--space-3);
}
.site-footer__tagline {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: rgba(255, 255, 255, 0.7);
  max-width: 36ch;
}

.site-footer__heading {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-champagne);
  margin-bottom: var(--space-3);
}

.site-footer__list li { margin-bottom: var(--space-2); }
.site-footer__list a { font-size: var(--fs-sm); }

.site-footer__address {
  font-style: normal;
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: rgba(255, 255, 255, 0.8);
}

.site-footer__bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wide);
  color: rgba(255, 255, 255, 0.55);
}
@media (min-width: 720px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
.site-footer__copy { margin: 0; }
.site-footer__meta { margin: 0; }
.site-footer__meta a { color: var(--color-champagne); }

/* Motion — keyframes (own CSS, matching reference motion feel) ---------- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fadeOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}
@keyframes fadeInSlow {
  0%   { opacity: 0; }
  20%  { opacity: 0; }
  100% { opacity: 1; }
}
@keyframes fadeOutSlow {
  0%   { opacity: 1; }
  20%  { opacity: 1; }
  100% { opacity: 0; }
}
@keyframes slideInUp {
  from { transform: translateY(15%); }
  to   { transform: translateY(0); }
}
@keyframes slideOutUp {
  from { transform: translateY(0); }
  to   { transform: translateY(-10%); }
}
@keyframes slideInDown {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(359deg); }
}
@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
    animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
  }
  40%, 43% {
    transform: translate3d(0, -16px, 0);
    animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
  }
  70% {
    transform: translate3d(0, -8px, 0);
    animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
  }
  90% { transform: translate3d(0, -3px, 0); }
}
@keyframes pulse {
  0%   { transform: scale3d(1, 1, 1); }
  50%  { transform: scale3d(1.05, 1.05, 1.05); }
  100% { transform: scale3d(1, 1, 1); }
}
@keyframes shake {
  0%, 100% { transform: translate3d(0, 0, 0); }
  10%, 30%, 50%, 70%, 90% { transform: translate3d(-8px, 0, 0); }
  20%, 40%, 60%, 80%     { transform: translate3d(8px, 0, 0); }
}
@keyframes flash {
  0%, 50%, 100% { opacity: 1; }
  25%, 75%      { opacity: 0; }
}
@keyframes rubberBand {
  0%   { transform: scale3d(1, 1, 1); }
  30%  { transform: scale3d(1.18, 0.82, 1); }
  40%  { transform: scale3d(0.82, 1.18, 1); }
  50%  { transform: scale3d(1.10, 0.90, 1); }
  65%  { transform: scale3d(0.96, 1.04, 1); }
  75%  { transform: scale3d(1.03, 0.97, 1); }
  100% { transform: scale3d(1, 1, 1); }
}
@keyframes swing {
  20%  { transform: rotate3d(0, 0, 1, 12deg); }
  40%  { transform: rotate3d(0, 0, 1, -8deg); }
  60%  { transform: rotate3d(0, 0, 1, 4deg); }
  80%  { transform: rotate3d(0, 0, 1, -4deg); }
  100% { transform: rotate3d(0, 0, 1, 0deg); }
}
@keyframes tada {
  0%        { transform: scale3d(1, 1, 1); }
  10%, 20%  { transform: scale3d(0.92, 0.92, 0.92) rotate3d(0, 0, 1, -3deg); }
  30%, 50%, 70%, 90% { transform: scale3d(1.06, 1.06, 1.06) rotate3d(0, 0, 1, 3deg); }
  40%, 60%, 80%      { transform: scale3d(1.06, 1.06, 1.06) rotate3d(0, 0, 1, -3deg); }
  100%     { transform: scale3d(1, 1, 1); }
}
@keyframes wobble {
  0%   { transform: none; }
  15%  { transform: translate3d(-20%, 0, 0) rotate3d(0, 0, 1, -5deg); }
  30%  { transform: translate3d(16%, 0, 0)  rotate3d(0, 0, 1, 3deg); }
  45%  { transform: translate3d(-12%, 0, 0) rotate3d(0, 0, 1, -3deg); }
  60%  { transform: translate3d(8%, 0, 0)   rotate3d(0, 0, 1, 2deg); }
  75%  { transform: translate3d(-4%, 0, 0)  rotate3d(0, 0, 1, -1deg); }
  100% { transform: none; }
}
@keyframes progressStripes {
  from { background-position: 1rem 0; }
  to   { background-position: 0 0; }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Motion — utility classes ----------------------------------------------- */
.fade-in         { animation: fadeIn var(--dur-base) var(--ease-out) both; }
.fade-in-slow    { animation: fadeInSlow var(--dur-slow) var(--ease-out) both; }
.fade-out        { animation: fadeOut var(--dur-base) var(--ease-in) both; }
.fade-out-slow   { animation: fadeOutSlow var(--dur-slow) var(--ease-in) both; }
.slide-in-up     { animation: slideInUp var(--dur-base) var(--ease-out) both; }
.slide-out-up    { animation: slideOutUp var(--dur-base) var(--ease-in) both; }
.slide-in-down   { animation: slideInDown var(--dur-base) var(--ease-out) both; }

.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transition: opacity var(--dur-slower) var(--ease-out);
}
.reveal.is-visible { opacity: 1; }

.spin         { display: inline-block; animation: spin 1s linear infinite; }
.pulse        { animation: pulse 1.4s var(--ease-out) infinite; }
.bounce       { animation: bounce 1.2s var(--ease-out) infinite; }
.shake        { animation: shake 0.8s var(--ease-in-out) both; }
.flash        { animation: flash 1s var(--ease-out) both; }
.rubber-band  { animation: rubberBand 1s var(--ease-out) both; }
.swing        { transform-origin: top center; animation: swing 1s var(--ease-out) both; }
.tada         { animation: tada 1s var(--ease-out) both; }
.wobble       { animation: wobble 1s var(--ease-out) both; }

.progress-bar-stripes {
  background-image: linear-gradient(45deg,
    rgba(255, 255, 255, 0.18) 25%, transparent 25%,
    transparent 50%, rgba(255, 255, 255, 0.18) 50%,
    rgba(255, 255, 255, 0.18) 75%, transparent 75%, transparent);
  background-size: 1rem 1rem;
  animation: progressStripes 1s linear infinite;
}

.marquee {
  display: flex;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.marquee:hover { animation-play-state: paused; }

/* Modal — uses fadeIn + slideInUp (matches smModalFadeIn/smModalSlideIn) */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background: rgba(0, 0, 0, 0.6);
  animation: fadeIn var(--dur-base) var(--ease-out);
}
.modal.is-open { display: flex; }
.modal__panel {
  background: var(--color-paper);
  border-radius: var(--radius-md);
  padding: var(--space-7);
  max-width: 540px;
  width: 100%;
  animation: slideInUp var(--dur-base) var(--ease-out);
}
.modal--slow .modal__panel {
  animation: fadeInSlow var(--dur-slow) var(--ease-out);
}

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