/* Mandaris — teaser.
   Eén idee: de pagina is een brief. Papier, inkt, een kop met Kenmerk en Betreft,
   en een stempel als handtekening. Geen gradiënten, geen kaartjes, geen knoppen. */

@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("fonts/newsreader-italic.woff2") format("woff2");
  font-weight: 300 700;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

:root {
  --papier: #F4F0E8;
  --inkt: #1D2B33;
  --grijs: #6A737A;
  --diep: #0A4F6B;
  --teal: #61B7B0;
  --stempelinkt: #0A4F6B;
}

* { box-sizing: border-box; }

html { background: var(--papier); }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  color: var(--inkt);
  font-family: "Newsreader", Georgia, serif;
  font-optical-sizing: auto;
  font-size: clamp(1.06rem, 0.9rem + 0.5vw, 1.25rem);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Papier zonder plaatje: een zweem korrel en twee vouwlijnen op een derde. */
.vouw {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to bottom,
      transparent calc(33.333% - 1px), rgba(29,43,51,.05) 33.333%, rgba(255,255,255,.55) calc(33.333% + 1px), transparent calc(33.333% + 2px),
      transparent calc(66.666% - 1px), rgba(29,43,51,.05) 66.666%, rgba(255,255,255,.55) calc(66.666% + 1px), transparent calc(66.666% + 2px)),
    radial-gradient(120% 90% at 30% 20%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(100% 80% at 90% 110%, rgba(10,79,107,.05), transparent 60%);
}

.brief {
  position: relative;
  flex: 1;
  max-width: 46rem;
  margin: 0 1.5rem 0 max(1.5rem, 12vw);
  padding: clamp(1.75rem, 5vh, 4rem) 0 3rem;
}

.afzender {
  display: flex;
  align-items: center;
  gap: .7rem;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--diep);
}
.afzender img { width: 40px; height: 40px; }

/* De kop van een brief: vaste labels links, inhoud rechts. */
.kop {
  margin: clamp(2rem, 7vh, 4.5rem) 0 clamp(1.5rem, 4.5vh, 3rem);
  display: grid;
  gap: .3rem;
  font-size: .95rem;
}
.kop div { display: grid; grid-template-columns: 6.5rem 1fr; }
.kop dt {
  color: var(--grijs);
  font-variant: small-caps;
  letter-spacing: .06em;
  text-transform: lowercase;
}
.kop dd { margin: 0; }
.mono {
  font-family: "Plex Mono", ui-monospace, Consolas, monospace;
  font-size: .82em;
  letter-spacing: .04em;
}

.inhoud { position: relative; max-width: 33rem; }
.inhoud p { margin: 0 0 1.1em; }
.aanhef { font-style: italic; }

.kern {
  font-size: clamp(2.1rem, 1.2rem + 3.6vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -.018em;
  font-weight: 380;
  color: var(--diep);
  margin: .35em 0 .55em !important;
  max-width: 14ch;
  text-wrap: balance;
}

.groet { margin-top: 1.8em !important; margin-bottom: 4.5rem !important; font-style: italic; }

.stempel {
  /* Over de plek van de handtekening, zoals op een echte brief. */
  position: absolute;
  left: 12.5rem;
  bottom: -6.5rem;
  width: clamp(140px, 13vw, 180px);
  aspect-ratio: 1;
  margin: 0;
  transform: rotate(-9deg);
  mix-blend-mode: multiply;
  opacity: .9;
}
.stempel svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.stempel .lijn { fill: none; stroke: var(--stempelinkt); }
.stempel .ringtekst {
  fill: var(--stempelinkt);
  font-family: "Plex Mono", ui-monospace, Consolas, monospace;
  font-size: 12.5px;
  letter-spacing: 1px;
}
.stempel img {
  position: absolute;
  width: 44%;
  height: 44%;
  left: 28%;
  top: 27%;
  filter: saturate(.85);
}

.voet {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem max(1.5rem, 12vw) 1.6rem;
  font-size: .85rem;
  color: var(--grijs);
  border-top: 1px solid rgba(29,43,51,.08);
}

/* Binnenkomst: de brief verschijnt, daarna landt de stempel. Eén keer, kort. */
@media (prefers-reduced-motion: no-preference) {
  .afzender, .kop, .inhoud { animation: verschijn .9s cubic-bezier(.2,.7,.2,1) both; }
  .kop { animation-delay: .15s; }
  .inhoud { animation-delay: .3s; }
  .stempel { animation: stempel .45s cubic-bezier(.3,1.4,.5,1) 1.5s both; }
}
@keyframes verschijn {
  from { opacity: 0; transform: translateY(8px); }
}
@keyframes stempel {
  0%   { opacity: 0; transform: rotate(-4deg) scale(1.35); }
  70%  { opacity: .95; }
  100% { opacity: .9; transform: rotate(-9deg) scale(1); }
}

@media (max-width: 560px) {
  .brief { margin-left: 1.5rem; }
  .kop div { grid-template-columns: 5.2rem 1fr; }
  .stempel { left: auto; right: .5rem; bottom: -5.5rem; width: 128px; }
  .voet { padding-inline: 1.5rem; }
}