/* =========================================================================
   Tokens
   ========================================================================= */
:root {
  --bg:        #0a0908;
  --bg-warm:   #14110d;
  --fg:        #e8e6e1;
  --fg-mid:    #8a8680;
  --fg-dim:    #4a4744;

  --accent:        #c9a876;
  --accent-bright: #f5d6a0;

  --border: rgba(255, 255, 255, 0.08);

  --font-display: 'Space Grotesk', -apple-system, system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  --pad: 2rem;
  --t-fast: 0.3s;
  --t-med:  0.5s;
  --t-slow: 0.7s;
  --ease:   cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================================
   Reset
   ========================================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;

  opacity: 0;
  transition: opacity 1.2s var(--ease);

  background:
    radial-gradient(ellipse at center 35%, var(--bg-warm) 0%, var(--bg) 60%, #050403 100%);
}
body.loaded { opacity: 1; }

canvas { display: block; }
button { background: none; border: none; color: inherit; font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* =========================================================================
   Work section
   ========================================================================= */
.work {
  position: fixed;
  inset: 0;
  overflow: hidden;
  touch-action: none;
  cursor: pointer;            /* segnala che il canvas è cliccabile (focus frame) */
}
body.is-open .work { cursor: default; }

#work-canvas {
  width: 100%;
  height: 100%;
}
.work::after {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 2;
  background:
    radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.55) 100%),
    linear-gradient(180deg, rgba(0,0,0,0.30) 0%, transparent 14%, transparent 86%, rgba(0,0,0,0.40) 100%);
}
.work::before {
  content: "";
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1.1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* =========================================================================
   Chrome (wordmark + hint + readout + progress) - nascosti in body.is-open
   ========================================================================= */
.chrome, .readout, .progress {
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
body.is-open .chrome,
body.is-open .readout,
body.is-open .progress {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
}

.chrome {
  position: fixed;
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.chrome-tl { top: var(--pad); left:  var(--pad); }
.chrome-tr { top: var(--pad); right: var(--pad); align-items: flex-end; text-align: right; }

.wordmark {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.42em;
  color: var(--fg);
}
.wordmark-sub {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  text-transform: uppercase;
}
.hint {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: 0.30em;
  color: var(--fg-mid);
  text-transform: uppercase;
}
.hint-sub {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

.readout {
  position: fixed;
  bottom: var(--pad);
  left: var(--pad);
  z-index: 10;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-width: 70vw;
}
.readout-meta {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 10px;
  letter-spacing: 0.30em;
  color: var(--accent);
  text-transform: uppercase;
}
.readout-project {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 7vw, 88px);
  letter-spacing: -0.025em;
  line-height: 0.95;
  color: var(--fg);
  text-transform: uppercase;
}
.readout-cta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.4rem;
}
.readout-cta-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50%      { opacity: 1.0; transform: scale(1.1); }
}
.readout-cta-text {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--fg-mid);
  text-transform: uppercase;
}

.progress {
  position: fixed;
  top: 50%;
  right: calc(var(--pad) + 4px);
  width: 1px;
  height: 38vh;
  transform: translateY(-50%);
  z-index: 10;
  pointer-events: none;
}
.progress-track { position: absolute; inset: 0; background: var(--border); }
.progress-fill {
  position: absolute;
  top: 0; left: 0;
  width: 1px;
  height: 0%;
  background: var(--accent);
  transition: height 0.45s var(--ease);
}
.progress-fill::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: -3px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(50%, 50%);
  box-shadow: 0 0 0 2px var(--bg);
}

/* =========================================================================
   Back button
   ========================================================================= */
.back-btn {
  position: fixed;
  top: var(--pad);
  right: var(--pad);
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.85rem;
  border: 0.5px solid var(--border);
  border-radius: 999px;
  color: var(--fg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-med) var(--ease);
  backdrop-filter: blur(8px);
  background: rgba(20, 17, 13, 0.45);
}
.back-btn:hover { color: var(--accent); border-color: var(--accent-bright); }
.back-btn-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
body.is-open .back-btn {
  opacity: 1;
  pointer-events: auto;
  transition-delay: 0.25s;
}

/* =========================================================================
   Overlay
   ========================================================================= */
.overlay-root {
  position: fixed;
  inset: 0;
  z-index: 50;
  pointer-events: none;
  opacity: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem;
  transition: opacity var(--t-slow) var(--ease);
}
.overlay-root.overlay-visible {
  opacity: 1;
  pointer-events: auto;
}

.overlay-content {
  width: 100%;
  max-width: 680px;
  transform: translateY(20px);
  transition: transform var(--t-slow) var(--ease);
}
.overlay-root.overlay-visible .overlay-content {
  transform: translateY(0);
}

.overlay-meta {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.overlay-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(48px, 8vw, 92px);
  letter-spacing: -0.025em;
  line-height: 0.95;
  color: var(--fg);
  text-transform: uppercase;
  margin-bottom: 2rem;
}
.overlay-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 2.5rem;
  letter-spacing: -0.005em;
}
.overlay-body p {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.65;
  color: var(--fg);
  margin-bottom: 1rem;
}

.overlay-stats {
  display: flex;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  padding-bottom: 1.5rem;
  border-bottom: 0.5px solid var(--border);
}
.overlay-stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.overlay-stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--fg-dim);
  text-transform: uppercase;
}
.overlay-stat-val {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--fg);
  text-transform: lowercase;
}

.overlay-skills {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 0.5px solid var(--border);
}
.overlay-skills-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.30em;
  color: var(--fg-dim);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.overlay-skills ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
}
.overlay-skills li {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--fg-mid);
  position: relative;
}
.overlay-skills li:not(:last-child)::after {
  content: "·";
  position: absolute;
  right: -0.8rem;
  color: var(--fg-dim);
}

.overlay-links {
  list-style: none;
  margin-top: 1rem;
}
.overlay-links li { border-bottom: 0.5px solid var(--border); }
.overlay-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 24px;
  color: var(--fg);
  transition: color var(--t-fast) var(--ease), padding-left var(--t-fast) var(--ease);
}
.overlay-links a:hover {
  color: var(--accent);
  padding-left: 0.6rem;
}
.link-arrow {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--fg-dim);
  transition: color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.overlay-links a:hover .link-arrow {
  color: var(--accent);
  transform: translate(4px, -4px);
}