/* ------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   ------------------------------------------------------------ */

:root {
  /* Palette — stark, intentional */
  --color-paper: #f5f3ef;        /* warm off-white, like architectural trace paper */
  --color-ink: #0f0f0d;          /* near-black, richer than pure #000 */
  --color-ink-secondary: #4a4844;
  --color-ink-tertiary: #9a9690;
  --color-rule: #d6d2cc;         /* ruled-line gray */
  --color-rule-dark: #b8b4ae;
  --color-accent: #c8391a;       /* single accent: archive red */
  --color-accent-muted: #e8c4bb;
  --color-surface: #eceae5;      /* slightly darker paper for cards */

  /* Typography */
  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body: 'Outfit', 'Helvetica Neue', 'Helvetica', sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;

  /* Type Scale — major third (1.25) */
  --text-xs: 0.64rem;
  --text-sm: 0.8rem;
  --text-base: 1rem;
  --text-md: 1.25rem;
  --text-lg: 1.563rem;
  --text-xl: 1.953rem;
  --text-2xl: 2.441rem;
  --text-3xl: 3.052rem;
  --text-4xl: 4rem;
  --text-5xl: 5.5rem;
  --text-hero: clamp(3.5rem, 10vw, 8rem);

  /* Spacing — 8px base grid */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;
  --space-24: 12rem;

  /* Layout */
  --container-max: 1440px;
  --container-content: 1100px;
  --container-narrow: 720px;
  --grid-gap: clamp(1rem, 2vw, 2rem);
  --page-margin: clamp(1.25rem, 5vw, 5rem);

  /* Borders */
  --border-width: 1px;
  --border: var(--border-width) solid var(--color-rule);
  --border-dark: var(--border-width) solid var(--color-rule-dark);

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 280ms;
  --duration-slow: 500ms;
  --duration-page: 800ms;

  /* Header */
  --header-height: 4rem;
}

/* ------------------------------------------------------------
   2. Reset & Base
   ------------------------------------------------------------ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--text-base);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-xl {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 300;
  line-height: 0.95;
  letter-spacing: -0.03em;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
}

.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.display-md {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
}

.label--accent {
  color: var(--color-accent);
}

p {
  line-height: 1.75;
  color: var(--color-ink-secondary);
}

p + p {
  margin-top: var(--space-2);
}

/* ------------------------------------------------------------
   4. Layout Utilities
   ------------------------------------------------------------ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--page-margin);
}

.container--content {
  max-width: var(--container-content);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.section--flush-top {
  padding-top: 0;
}

/* ------------------------------------------------------------
   5. Header & Navigation
   ------------------------------------------------------------ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  /* Sostituiamo 'transparent' con il colore carta solido */
  background-color: var(--color-paper); 
  /* Aggiungiamo subito il bordo netto sotto */
  border-bottom: 1px solid var(--color-rule);
  transition: transform var(--duration-base) var(--ease-in-out);
}

/* Rimuoviamo o svuotiamo la regola .scrolled perché ora è già 'netto' dall'inizio */
.site-header.scrolled {
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-rule);
}

.site-header.hidden {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding-inline: var(--page-margin);
  max-width: var(--container-max);
  margin-inline: auto;
}

.site-logo {
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.1;
  letter-spacing: 0;
}

.logo-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  transition: color var(--duration-fast);
}

.logo-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-tertiary);
}

.site-logo:hover .logo-name {
  color: var(--color-accent);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--duration-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 100%;
  height: 1px;
  background-color: var(--color-ink);
  transition: right var(--duration-base) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-ink);
}

.nav-link:hover::after,
.nav-link.active::after {
  right: 0;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 4px;
  z-index: 110;
}

.toggle-line {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--color-ink);
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast);
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--color-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 10vw, 4rem);
  font-weight: 300;
  color: var(--color-ink);
  letter-spacing: -0.02em;
  transition: color var(--duration-fast);
}

.mobile-nav-link:hover {
  color: var(--color-accent);
}

/* ------------------------------------------------------------
   6. Footer
   ------------------------------------------------------------ */

.site-footer {
  border-top: var(--border);
  padding-block: var(--space-6);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--page-margin);
  max-width: var(--container-max);
  margin-inline: auto;
}

.footer-copy,
.footer-location {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-tertiary);
}

/* ------------------------------------------------------------
   7. Home Page
   ------------------------------------------------------------ */

/* Hero */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  background-color: var(--color-ink);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}

.hero__image.loaded {
  opacity: 1;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  /* Aggiunto bianco semitrasparente in alto per far leggere il menù nero */
  background: linear-gradient(
    to bottom,
    rgba(245, 243, 239, 0.8) 0%,
    rgba(245, 243, 239, 0.0) 15%,
    rgba(15, 15, 13, 0.55) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--page-margin);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.65);
  margin-bottom: var(--space-2);

  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.8s var(--ease-out) 0.3s forwards;
}

.hero__name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 300;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--color-paper);
  font-feature-settings: "kern" 1, "liga" 1;

  opacity: 0;
  transform: translateY(24px);
  animation: fade-up 1s var(--ease-out) 0.5s forwards;
}

.hero__name em {
  font-style: italic;
  color: rgba(245, 243, 239, 0.75);
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-4);

  opacity: 0;
  transform: translateY(16px);
  animation: fade-up 0.8s var(--ease-out) 0.9s forwards;
}

.hero__rule {
  width: 2.5rem;
  height: 1px;
  background-color: rgba(245, 243, 239, 0.45);
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.55);
}

.hero__scroll-cue {
  position: absolute;
  bottom: var(--space-4);
  right: var(--page-margin);
  z-index: 2;

  display: flex;
  align-items: center;
  gap: var(--space-2);
  opacity: 0;
  animation: fade-in 1s var(--ease-out) 1.5s forwards;
}

.hero__scroll-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.4);

  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.scroll-line {
  width: 1px;
  height: 3rem;
  background: linear-gradient(to bottom, transparent, rgba(245, 243, 239, 0.4));
  animation: scroll-line 2s var(--ease-in-out) 2s infinite;
}

/* Hero Project Caption */
.hero__caption {
  position: relative;
  z-index: 2;
  padding: var(--space-3) var(--page-margin);
  border-top: 1px solid rgba(245, 243, 239, 0.15);

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

  opacity: 0;
  animation: fade-in 0.8s var(--ease-out) 1.2s forwards;
}

.caption__project {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: rgba(245, 243, 239, 0.5);
}

.caption__cta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 243, 239, 0.6);
  border-bottom: 1px solid rgba(245, 243, 239, 0.3);
  padding-bottom: 1px;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}

.caption__cta:hover {
  color: rgba(245, 243, 239, 0.9);
  border-color: rgba(245, 243, 239, 0.7);
}

/* Selected Works teaser on home */
.selected-works {
  border-top: var(--border);
}

.selected-works__header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  padding-block: var(--space-4);
  border-bottom: var(--border);
}

.selected-works__count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-tertiary);
}

.selected-works__link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: color var(--duration-fast);
}

.selected-works__link:hover {
  color: var(--color-ink);
}

.selected-works__link::after {
  content: '→';
  transition: transform var(--duration-base) var(--ease-out);
}

.selected-works__link:hover::after {
  transform: translateX(4px);
}

/* Works Grid */
.works-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0;
}

.work-item {
  position: relative;
  overflow: hidden;
  border-right: var(--border);
  border-bottom: var(--border);
}

.work-item:nth-child(1) {
  grid-column: span 7;
  grid-row: span 2;
}

.work-item:nth-child(2) {
  grid-column: span 5;
}

.work-item:nth-child(3) {
  grid-column: span 5;
}

.work-item:last-child {
  border-right: none;
}

.work-item__image-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--color-surface);
}

.work-item:nth-child(1) .work-item__image-wrap {
  aspect-ratio: unset;
  height: 100%;
}

.work-item__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out), opacity var(--duration-slow);
  opacity: 0.9;
}

.work-item:hover .work-item__image {
  transform: scale(1.03);
  opacity: 1;
}

.work-item__info {
  padding: var(--space-3) var(--space-3) var(--space-4);
  border-top: var(--border);
}

.work-item__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-tertiary);
  margin-bottom: var(--space-1);
}

.work-item__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: 4px;
  transition: color var(--duration-fast);
}

.work-item:hover .work-item__title {
  color: var(--color-accent);
}

.work-item__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-ink-tertiary);
}

/* ------------------------------------------------------------
   8. Contact Page
   ------------------------------------------------------------ */

.contact-page {
  padding-top: calc(var(--header-height) + clamp(3rem, 8vw, 6rem));
  padding-bottom: clamp(4rem, 10vw, 8rem);
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: var(--border);
}

.contact-left {
  padding: clamp(2rem, 5vw, 4rem);
  border-right: var(--border);
}

.contact-right {
  padding: clamp(2rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-heading {
  margin-bottom: var(--space-8);
}

.contact-heading .label {
  display: block;
  margin-bottom: var(--space-3);
}

.contact-intro {
  margin-top: var(--space-6);
  font-family: var(--font-body);
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  line-height: 1.8;
  color: var(--color-ink-secondary);
  max-width: 38ch;
}

/* Email Display — the centrepiece of Contact */
.email-display {
  margin-top: auto;
  padding-top: var(--space-8);
  border-top: var(--border);
}

.email-display__label {
  display: block;
  margin-bottom: var(--space-3);
}

.email-address {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.5vw, 2.4rem);
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  line-height: 1.2;
  cursor: default;

  /* Intentional obfuscation — styled as a design element */
  user-select: text;
}

.email-address .at-sign,
.email-address .dot-separator {
  display: inline-block;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.7em;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-inline: 0.2em;
  vertical-align: middle;
  transform: translateY(-0.05em);
}

.email-note {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-tertiary);
  margin-top: var(--space-2);
}

/* Social Links */
.social-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  border-bottom: var(--border);
  transition: border-color var(--duration-fast);
}

.social-link:last-child {
  border-bottom: none;
}

.social-link:hover {
  border-color: var(--color-ink);
}

.social-link__platform {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-tertiary);
  transition: color var(--duration-fast);
}

.social-link:hover .social-link__platform {
  color: var(--color-ink);
}

.social-link__handle {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  transition: color var(--duration-fast);
}

.social-link:hover .social-link__handle {
  color: var(--color-accent);
}

.social-link__arrow {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-tertiary);
  transition: transform var(--duration-base) var(--ease-out), color var(--duration-fast);
}

.social-link:hover .social-link__arrow {
  transform: translate(3px, -3px);
  color: var(--color-ink);
}

/* Availability indicator */
.availability {
  margin-top: var(--space-6);
  padding: var(--space-3) var(--space-4);
  border: var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.availability__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #3dba74;
  flex-shrink: 0;
  animation: pulse 2.5s ease-in-out infinite;
}

.availability__text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-secondary);
}

/* ------------------------------------------------------------
   9. Shared Components
   ------------------------------------------------------------ */

/* Page header (used on inner pages) */
.page-header {
  padding-top: calc(var(--header-height) + clamp(3rem, 6vw, 5rem));
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: var(--border);
}

.page-header__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--space-4);
}

/* Horizontal rule with label */
.ruled-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.ruled-label::before {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-rule);
}

/* ------------------------------------------------------------
   10. Animations & Keyframes
   ------------------------------------------------------------ */

@keyframes fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  to {
    opacity: 1;
  }
}

@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

/* Reveal on scroll utility */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for children */
.reveal-group > *:nth-child(1) { transition-delay: 0ms; }
.reveal-group > *:nth-child(2) { transition-delay: 80ms; }
.reveal-group > *:nth-child(3) { transition-delay: 160ms; }
.reveal-group > *:nth-child(4) { transition-delay: 240ms; }

/* ------------------------------------------------------------
   11. Responsive
   ------------------------------------------------------------ */

@media (max-width: 1024px) {
  .works-grid {
    grid-template-columns: 1fr 1fr;
  }

  .work-item:nth-child(1) {
    grid-column: span 2;
    grid-row: auto;
  }

  .work-item:nth-child(2),
  .work-item:nth-child(3) {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

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

  .contact-left {
    border-right: none;
    border-bottom: var(--border);
  }

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

  .work-item:nth-child(1),
  .work-item:nth-child(2),
  .work-item:nth-child(3) {
    grid-column: span 1;
    grid-row: auto;
    border-right: none;
  }

  .work-item:nth-child(1) .work-item__image-wrap {
    aspect-ratio: 4/3;
    height: auto;
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-1);
    text-align: center;
  }

  .selected-works__header {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

@media (max-width: 480px) {
  .hero__name {
    letter-spacing: -0.02em;
  }

  .hero__scroll-cue {
    display: none;
  }
}