/* ==========================================================================
   DESAINZ — Andrea Santi portfolio
   Design system derived from "Andrea Santi - CV" + the DESAINZ badge logo.
   White paper, near-black text, amber marker highlight, navy + periwinkle.
   ========================================================================== */

:root {
  /* --- colour ---------------------------------------------------------- */
  --paper:       #ffffff;
  --paper-warm:  #faf9f7;
  --ink:         #14161c;   /* body copy — the CV's dark slate */
  --ink-soft:    #3d424e;
  --muted:       #8c919c;   /* the CV's grey dates */
  --rule:        #e4e5e9;

  --navy:        #263453;   /* logo outer ring */
  --navy-deep:   #1b2437;
  --peri:        #8296c8;   /* logo inner disc */
  --amber:       #e9a02e;   /* logo lettering + CV heading marker */
  --amber-bright:#ffc22e;
  --orange:      #e07b3c;   /* the CV's "Role" micro-label */

  /* --- type ------------------------------------------------------------ */
  --font: "Inter", "Aptos", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --fs-micro: 0.6875rem;    /* 11px — labels, meta */
  --fs-small: 0.8125rem;
  --fs-body:  1.0625rem;
  --fs-lead:  clamp(1.15rem, 1.6vw, 1.5rem);
  --fs-h3:    clamp(1.25rem, 2vw, 1.75rem);
  --fs-h2:    clamp(1.75rem, 4vw, 3rem);
  --fs-huge:  clamp(3.5rem, 13vw, 12rem);

  /* --- layout ---------------------------------------------------------- */
  --gutter:   clamp(1.25rem, 5vw, 5.5rem);
  --measure:  62ch;
  --ease:     cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.55;
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, p, figure { margin: 0; }

a { color: inherit; }

::selection {
  background: var(--amber-bright);
  color: var(--ink);
}

/* --- shared type utilities --------------------------------------------- */

/* the CV's signature: a marker stroke sitting behind the lower half of a heading */
.marker {
  display: inline;
  background-image: linear-gradient(to top, var(--amber-bright) 0, var(--amber-bright) 0.48em, transparent 0.48em);
  background-repeat: no-repeat;
  padding: 0 0.12em 0.05em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

/* the CV's small orange "Role" tag */
.tag {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}

.label {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

/* --- shared link treatment ---------------------------------------------- */
.u-link {
  text-decoration: none;
  background-image: linear-gradient(var(--amber), var(--amber));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size 0.45s var(--ease);
}

.u-link:hover,
.u-link:focus-visible { background-size: 100% 2px; }

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

/* --- reveal on scroll --------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(1.75rem);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

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

/* visible only to screen readers — for headings the design does not draw */
.u-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}