/* ============================================================
   Andrea Erdas — Pinacoteca cromatica
   Site stylesheet
   ============================================================ */

:root {
  /* Color tokens — OKLCH, dark warm + paper */
  --bg-0:        oklch(0.13 0.005 60);
  --bg-1:        oklch(0.16 0.006 60);
  --bg-2:        oklch(0.20 0.008 60);
  --bg-veil:     oklch(0.10 0.005 60 / 0.78);

  --ink-0:       oklch(0.96 0.012 80);
  --ink-1:       oklch(0.84 0.018 75);
  --ink-2:       oklch(0.62 0.022 70);
  --ink-3:       oklch(0.48 0.020 65);

  --line:        oklch(0.28 0.012 60);
  --line-soft:   oklch(0.22 0.010 60);

  --accent:      oklch(0.74 0.20 45);
  --accent-soft: oklch(0.66 0.17 45 / 0.18);

  /* Type */
  --font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --font-body:    "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Spacing scale */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;
  --s-10: 9rem;

  /* Layout */
  --content-w: 72rem;
  --reading-w: 38rem;
  --pad-x: clamp(1.25rem, 4vw, 3rem);

  /* Misc */
  --radius: 2px;
  --header-h: 4.25rem;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ============================================================
   Base
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.5rem);
}

body {
  margin: 0;
  background: var(--bg-0);
  color: var(--ink-1);
  font: 400 16px/1.55 var(--font-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--ink-0);
  text-decoration: none;
  text-underline-offset: 0.2em;
}
a:hover { color: var(--accent); }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol { list-style: none; padding: 0; margin: 0; }
p, h1, h2, h3, h4, blockquote, figure { margin: 0; }

::selection {
  background: var(--accent);
  color: var(--bg-0);
}

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: -10rem;
  background: var(--ink-0);
  color: var(--bg-0);
  padding: var(--s-3) var(--s-4);
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { top: var(--s-4); }

/* Section eyebrow shared */
.section-eyebrow {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  text-transform: uppercase;
  margin: 0 0 var(--s-5);
}

/* ============================================================
   Site header (sticky)
   ============================================================ */

.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: var(--header-h);
  background: oklch(0.13 0.005 60 / 0.65);
  backdrop-filter: blur(14px) saturate(120%);
  -webkit-backdrop-filter: blur(14px) saturate(120%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), background 0.3s var(--ease-out);
}
.site-header.is-scrolled {
  background: oklch(0.13 0.005 60 / 0.92);
  border-bottom-color: var(--line);
}

.site-header__inner {
  height: 100%;
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}

.signature {
  display: inline-flex;
  align-items: baseline;
  gap: var(--s-3);
  color: var(--ink-0);
}
.signature__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}
.signature__role {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-2);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: lowercase;
}

.primary-nav ul {
  display: flex;
  gap: var(--s-6);
}
.primary-nav a {
  font-family: var(--font-body);
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--ink-1);
  padding: var(--s-3) 0;
  position: relative;
  display: inline-block;
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0.3rem;
  height: 1px;
  background: var(--accent);
  transition: right 0.3s var(--ease-out);
}
.primary-nav a:hover { color: var(--ink-0); }
.primary-nav a:hover::after { right: 0; }

.menu-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
}
.menu-toggle__bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--ink-0);
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  bottom: 0;
  background: oklch(0.10 0.005 60);
  padding: var(--s-7) var(--pad-x);
  z-index: 49;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  animation: mobileNavIn 0.3s var(--ease-out);
}
.mobile-nav[hidden] { display: none; }
.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 7vw, 2.5rem);
  font-weight: 600;
  color: var(--ink-0);
  letter-spacing: -0.01em;
  display: inline-block;
  padding: var(--s-2) 0;
  min-height: 44px;
}
.mobile-nav__footer {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-2);
  margin-top: var(--s-7);
  border-top: 1px solid var(--line);
  padding-top: var(--s-5);
}

@keyframes mobileNavIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .primary-nav { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  padding: calc(var(--header-h) + var(--s-7)) var(--pad-x) var(--s-9);
  display: flex;
  flex-direction: column;
  justify-content: center;
  isolation: isolate;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: contrast(1.05) saturate(1.04);
}
.hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      oklch(0.10 0.005 60 / 0.15) 0%,
      oklch(0.10 0.005 60 / 0.40) 45%,
      oklch(0.10 0.005 60 / 0.75) 100%
    ),
    radial-gradient(
      ellipse at 22% 65%,
      oklch(0.10 0.005 60 / 0.10) 0%,
      oklch(0.10 0.005 60 / 0.55) 75%
    );
}

.hero__content {
  position: relative;
  max-width: var(--content-w);
  width: 100%;
  margin: 0 auto;
}

.hero__stamp {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-3);
  font-family: var(--font-body);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--ink-0);
  margin-bottom: var(--s-6);
  padding: 8px 14px 8px 12px;
  border: 1px solid oklch(0.96 0.012 80 / 0.18);
  border-radius: 100px;
  background: oklch(0.10 0.005 60 / 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hero__stamp-mark {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px oklch(0.74 0.20 45 / 0.18);
}
.hero__stamp-dot {
  display: inline-block;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--ink-2);
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-style: normal;
  font-size: clamp(3rem, 9.5vw, 8rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--ink-0);
  margin: 0 0 var(--s-6);
  display: block;
  max-width: 14ch;
}
.hero__title-line {
  display: block;
}
.hero__title-line--accent {
  color: var(--accent);
  font-weight: 500;
  letter-spacing: -0.035em;
  position: relative;
  padding-left: 0.06em;
}

.hero__lede {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 1.55vw, 1.25rem);
  line-height: 1.55;
  color: var(--ink-0);
  max-width: 36rem;
  margin-bottom: var(--s-6);
  font-weight: 400;
}

.hero__palette {
  display: inline-flex;
  align-items: center;
  gap: var(--s-4);
  margin-bottom: var(--s-7);
  padding: 8px 14px 8px 14px;
  border: 1px solid oklch(0.96 0.012 80 / 0.15);
  border-radius: 100px;
  background: oklch(0.10 0.005 60 / 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hero__palette-label {
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-1);
  text-transform: lowercase;
}
.hero__palette-chips {
  display: inline-flex;
  gap: 6px;
}
.chip {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid oklch(0.96 0.012 80 / 0.25);
}
.chip--red    { background: oklch(0.58 0.22 28); }
.chip--orange { background: oklch(0.72 0.20 48); }
.chip--yellow { background: oklch(0.84 0.17 88); }
.chip--blue   { background: oklch(0.55 0.18 240); }
.chip--green  { background: oklch(0.62 0.16 145); }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4) var(--s-5);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-1);
}
.hero__meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
}
.dot {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.hero__scroll {
  position: absolute;
  right: var(--pad-x);
  bottom: var(--s-7);
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-2);
  text-transform: lowercase;
  letter-spacing: 0.04em;
  padding: var(--s-3);
}
.hero__scroll svg {
  animation: scrollHint 2.4s var(--ease-out) infinite;
}
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 0.7; }
  50%      { transform: translateY(4px); opacity: 1; }
}

/* ============================================================
   Manifesto
   ============================================================ */

.manifesto {
  padding: var(--s-10) var(--pad-x);
  max-width: var(--content-w);
  margin: 0 auto;
}

.pullquote {
  margin-bottom: var(--s-9);
  padding-top: var(--s-5);
  border-top: 1px solid var(--line);
}
.pullquote p {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink-0);
}
.pullquote footer {
  margin-top: var(--s-5);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-2);
  font-style: normal;
}
.pullquote footer::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: 1px;
  background: var(--ink-2);
  vertical-align: middle;
  margin-right: var(--s-3);
}

.manifesto__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  max-width: 56rem;
}
@media (min-width: 900px) {
  .manifesto__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.manifesto__para {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-1);
  padding-top: var(--s-4);
  border-top: 1px solid var(--line-soft);
}

/* ============================================================
   Works
   ============================================================ */

.works {
  padding: var(--s-9) 0 var(--s-10);
  background:
    linear-gradient(180deg,
      var(--bg-0) 0%,
      var(--bg-1) 12%,
      var(--bg-1) 88%,
      var(--bg-0) 100%
    );
}

.works__header {
  max-width: var(--content-w);
  margin: 0 auto var(--s-9);
  padding: 0 var(--pad-x);
}
.works__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink-0);
  margin: 0 0 var(--s-5);
  max-width: 30ch;
}
.works__intro {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 44rem;
}

.work {
  max-width: var(--content-w);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  margin-bottom: var(--s-10);
}
.work:last-child { margin-bottom: 0; }

.work__figure {
  position: relative;
  margin: 0 0 var(--s-6);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
}
.work__figure img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s var(--ease-out);
}
.work:hover .work__figure img { transform: scale(1.015); }

.work__caption {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
  max-width: 38rem;
}
@media (min-width: 800px) {
  .work__caption {
    grid-template-columns: 1fr 2fr;
    gap: var(--s-6);
    max-width: none;
    align-items: start;
  }
  .work__caption > :first-child { grid-column: 1; }
  .work__note { grid-column: 2; }
}

.work__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  color: var(--ink-0);
}
.work__name-sub {
  font-weight: 400;
  font-style: normal;
  color: var(--ink-2);
  font-size: 0.9em;
}
.work__meta {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--ink-2);
  margin-top: var(--s-1);
}
.work__note {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-1);
  padding-top: var(--s-2);
}

/* Slight variation in row layout */
.work:nth-child(odd) .work__figure {
  margin-left: 0;
}
.work:nth-child(even) .work__figure {
  margin-right: 0;
}
@media (min-width: 1100px) {
  .work:nth-child(even) {
    max-width: 60rem;
    margin-left: auto;
    margin-right: auto;
    transform: translateX(-3%);
  }
  .work:nth-child(odd) {
    max-width: 64rem;
    margin-right: auto;
    margin-left: auto;
    transform: translateX(3%);
  }
}

/* ============================================================
   Path (l'evoluzione del colore)
   ============================================================ */

.path {
  padding: var(--s-10) var(--pad-x);
  max-width: var(--content-w);
  margin: 0 auto;
}

.path__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink-0);
  margin-bottom: var(--s-5);
  max-width: 22ch;
}
.path__intro {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-1);
  max-width: 38rem;
  margin-bottom: var(--s-8);
}

.path__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
@media (min-width: 800px) {
  .path__list {
    grid-template-columns: repeat(5, 1fr);
    border-top: none;
    position: relative;
  }
  .path__list::before {
    content: "";
    position: absolute;
    top: 11px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--line);
  }
}

.path__step {
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
@media (min-width: 800px) {
  .path__step {
    padding: 0 var(--s-4) 0 0;
    border-bottom: none;
    padding-top: var(--s-6);
  }
}

.path__step-dot {
  display: block;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ink-3);
  margin-bottom: var(--s-3);
  position: relative;
}
@media (min-width: 800px) {
  .path__step-dot {
    position: absolute;
    top: 7px;
    left: 0;
    margin-bottom: 0;
  }
}
.path__step--current .path__step-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.path__step-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink-0);
  margin-bottom: var(--s-2);
  letter-spacing: -0.01em;
}
.path__step-now {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 2px;
  vertical-align: middle;
  margin-left: var(--s-2);
}

.path__step-text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 22ch;
}

/* ============================================================
   Studio
   ============================================================ */

.studio {
  background: var(--bg-1);
  border-top: 1px solid var(--line);
  padding: var(--s-10) var(--pad-x);
}
.studio__inner {
  max-width: 50rem;
  margin: 0 auto;
  text-align: center;
}
.studio__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.85rem, 4.5vw, 2.85rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink-0);
  margin-bottom: var(--s-5);
}
.studio__text {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink-1);
  margin-bottom: var(--s-7);
  max-width: 38rem;
  margin-left: auto;
  margin-right: auto;
}
.studio__handle {
  color: var(--ink-0);
  font-weight: 500;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
}
.studio__values {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-1);
  padding: var(--s-3) var(--s-5);
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--bg-0);
}
.studio__sep {
  color: var(--ink-3);
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  background: var(--bg-0);
  border-top: 1px solid var(--line);
  padding: var(--s-7) var(--pad-x);
}
.site-footer__inner {
  max-width: var(--content-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
}
@media (min-width: 800px) {
  .site-footer__inner {
    grid-template-columns: 1.2fr 1fr 1.2fr;
    align-items: start;
    gap: var(--s-7);
  }
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-0);
  margin-bottom: var(--s-2);
  letter-spacing: -0.01em;
}
.site-footer__role {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-2);
}

.site-footer__social {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
}
.social-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.82rem;
  color: var(--ink-1);
}
.social-chip svg { color: var(--ink-2); }
.social-handle {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-2);
}

.site-footer__legal p {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-2);
  line-height: 1.55;
}
.site-footer__legal p + p { margin-top: var(--s-2); }

.footer-credit a {
  color: var(--ink-1);
  border-bottom: 1px dotted var(--ink-3);
  padding-bottom: 1px;
}
.footer-credit a:hover { color: var(--ink-0); border-bottom-color: var(--accent); }

/* ============================================================
   Mobile fine-tuning
   ============================================================ */

@media (max-width: 600px) {
  .hero {
    padding-top: calc(var(--header-h) + var(--s-5));
    padding-bottom: var(--s-7);
  }
  .hero__scroll {
    right: var(--s-4);
    bottom: var(--s-5);
  }
  .pullquote { padding-top: var(--s-3); }
  .manifesto { padding: var(--s-8) var(--pad-x); }
  .works { padding: var(--s-7) 0 var(--s-8); }
  .work { margin-bottom: var(--s-8); }
  .path { padding: var(--s-8) var(--pad-x); }
  .studio { padding: var(--s-8) var(--pad-x); }
  .studio__values {
    padding: var(--s-3) var(--s-4);
    gap: var(--s-3);
  }
}

@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;
  }
}