/*
 * Welcome page.
 *
 * Layout strategy: the Figma frame is 1280x720 landscape meant for large
 * displays (up to a 4K TV). Rather than pin to those pixels, everything scales
 * with the viewport (vw/vh + clamp + em-based letter-spacing), so the same
 * composition holds from a laptop up to 4K without re-authoring.
 *
 * Animation strategy: only opacity and transform are animated (GPU-composited,
 * no layout thrash) so even elaborate letter choreography stays cheap on the
 * client and never touches the server.
 */

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

html,
body {
  margin: 0;
  height: 100%;
}

.welcome {
  position: relative;
  width: 100%;
  min-height: 100svh;
  overflow: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
}

/* ---- Layered backgrounds ---------------------------------------------- */

.welcome__scenery,
.welcome__texture {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  pointer-events: none;
}

/* Sepia city watermark, with a very slow "settle into place" Ken Burns.
   Figma used 0.08 (near-invisible); raised so it actually reads. Tune here. */
.welcome__scenery {
  opacity: 1;
  transform-origin: center;

  /* Ink bleed-in: the CodyHouse 25-frame sprite (16000x360) used as a MASK, so
     the sepia photo paints itself on like spreading ink. mask-size 2500% lays
     all 25 frames across the element; the steps(24) animation flips through them
     by sliding mask-position. Base position is the LAST frame (full reveal) so
     the photo stays fully shown once the animation ends or is disabled. */
  -webkit-mask: url("../img/ink.4bd4338f9865.png") no-repeat 100% 0;
  mask: url("../img/ink.4bd4338f9865.png") no-repeat 100% 0;
  -webkit-mask-size: 2500% 100%;
  mask-size: 2500% 100%;

  animation: welcome-ink-in 1.4s steps(24) both,
             welcome-kenburns 9s ease-out both;
}

@keyframes welcome-ink-in {
  from { -webkit-mask-position: 0 0; mask-position: 0 0; }   /* first frame: a droplet */
  to   { -webkit-mask-position: 100% 0; mask-position: 100% 0; }  /* last frame: full */
}

/* Paper grain overlay — generated procedurally (inline SVG fractal noise,
   desaturated to grey) so it needs no image asset and stays crisp at any size.
   Swap in a real re-exported texture PNG here later if you want the exact grain. */
.welcome__texture {
  opacity: 0.30;
  background-image: var(--paper-grain);
  background-size: 150px 150px;
  background-repeat: repeat;
  mix-blend-mode: multiply;
}

@keyframes welcome-kenburns {
  from { transform: scale(1.08) translateY(-1.4%); }
  to   { transform: scale(1) translateY(0); }
}

/* ---- Logo ------------------------------------------------------------- */

.welcome__logo {
  position: absolute;
  top: clamp(18px, 3.5vh, 48px);
  left: 50%;
  transform: translate(-50%, 40%);  
  width: clamp(46px, 5vw, 104px);
  height: auto;
  z-index: 2;
}

/* ---- Centered content (title + Enter) --------------------------------- */

.welcome__content {
  transform: translate(0%, 5%);
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 6vw;
}

.welcome__title {
  margin: 0;
  font-weight: 400;
  font-size: clamp(1.05rem, 1.62vw, 3.4rem);  /* scaled down ~14% from 24px @1280 */
  line-height: 1.34;
  letter-spacing: 0.3em;                      /* tightened from 0.39em */
  text-indent: 0.3em;                         /* re-center vs trailing track */
}

.welcome__title-line { display: block; }

/* Per-letter unit for the title fade-in. */
.welcome__letter {
  display: inline-block;
  opacity: 0;                 /* revealed by JS (or forced to 1 for reduced motion) */
  will-change: opacity, transform;
}

/* First letter of each word is enlarged — the engraved "initial" look. */
.welcome__letter.is-initial { font-size: 1.34em; }   /* 32px / 24px */

.welcome__letter.is-fading-in {
  animation: welcome-letter-in 700ms ease both;
}

@keyframes welcome-letter-in {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.welcome__space { display: inline-block; }

/* ---- Enter ------------------------------------------------------------ */

.welcome__enter {
  transform: translate(0%, 5px);
  appearance: none;
  -webkit-appearance: none;
  background: none;
  border: 0;
  padding: 0;
  margin-top: clamp(48px, 11vh, 168px);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5em;
  font-family: inherit;
  color: var(--accent-red);
  cursor: pointer;
}

.welcome__enter-text {
  font-size: clamp(0.85rem, 1.35vw, 2.7rem);  /* scaled down ~14% from 20px @1280 */
  letter-spacing: 0.2em;                      /* tightened from 0.27em */
  text-indent: 0.2em;
}

/* Per-letter unit for the hover ripple recolor (red <-> black). */
.welcome__enter-letter {
  display: inline-block;
  color: var(--accent-red);
  transition: opacity 280ms ease;   /* the fade half of each letter's swap (matches FADE_MS) */
}

.welcome__enter-letter.is-initial { font-size: 1.1em; }   /* 22px / 20px */
.welcome__enter-letter.is-fading { opacity: 0; }

.welcome__arrow {
  /* Combined into ONE declaration — two separate `transform` lines override
     each other (last wins), which is why translate had no effect before. */
  transform: translate(0px, 5px) rotate(180deg);
  width: clamp(8px, 0.7vw, 18px);
  height: auto;
  overflow: visible;                /* let round caps show at the edges */
  stroke: currentColor;             /* default before the first hover */
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Normalised to pathLength=100; starts fully drawn. welcome.js animates the
   dashoffset to erase/redraw it (and sets stroke directly while hidden). */
.welcome__arrow-path {
  stroke-dasharray: 100;
  stroke-dashoffset: 0;
}

/* ---- Footer (language toggles + privacy) ------------------------------ */

.welcome__footer {
  position: absolute;
  left: clamp(16px, 2vw, 48px);
  bottom: clamp(14px, 2.5vh, 40px);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1.4em;
  font-size: clamp(0.6rem, 0.8vw, 1.15rem);
  letter-spacing: 0.06em;
}

.welcome__langs {
  display: flex;
  gap: 0.7em;
}

.welcome__lang {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  opacity: 0.55;
}

.welcome__lang.is-active {
  opacity: 1;
  color: var(--accent-red);
}

.welcome__privacy {
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.1em;
}

/* ---- Leave transition: content slides up + screen fades to white ------ */

.welcome__fade {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1s ease-in-out;
}

.welcome.is-leaving .welcome__content {
  transform: translateY(-40px);
  opacity: 0;
  transition: transform 1s ease-in-out, opacity 1s ease-in-out;
}

.welcome.is-leaving .welcome__fade { opacity: 1; }

.welcome.is-leaving .welcome__logo,
.welcome.is-leaving .welcome__footer {
  opacity: 0;
  transition: opacity 0.6s ease;
}

/* ---- Respect reduced-motion ------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .welcome__scenery { animation: none; }
  .welcome__letter {
    opacity: 1;
    animation: none;
  }
  .welcome__content,
  .welcome__fade { transition: none; }
}

/* -------------------------------------------------------------------------
 * Privacy information popup — same card style as the Index help popup, but
 * wide (almost full-screen) since the policy is long. Opened from the footer
 * "PRIVACY INFORMATION" link (wired in welcome.js).
 * ---------------------------------------------------------------------- */
.privacy-panel {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(40, 27, 0, 0.22);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.privacy-panel.open { opacity: 1; pointer-events: auto; }

.privacy-card {
  position: relative;
  width: min(1150px, 94vw);
  max-height: 90vh;
  overflow-y: auto;
  overscroll-behavior: none; /* kill the elastic bounce that reveals the edge */
  background: #fcf3d6;
  border: 4px solid #664718;
  border-radius: 20px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
  padding: clamp(28px, 4vw, 56px) clamp(28px, 5vw, 72px);
  transform: scale(0.97);
  transition: transform 0.2s ease;
  text-align: left;
}
.privacy-panel.open .privacy-card { transform: scale(1); }

.privacy-close {
  position: absolute;
  top: 12px;
  right: 20px;
  border: none;
  background: none;
  font-size: 30px;
  line-height: 1;
  color: #664718;
  cursor: pointer;
  font-family: sans-serif;
}
.privacy-close:hover { opacity: 0.6; }

.privacy-card h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 2.4vw, 30px);
  color: #2d1b00;
  text-align: center;
  margin: 0 0 6px;
}
.privacy-meta {
  text-align: center;
  color: #2b2b2b;
}
.privacy-card h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 24px;
  color: #2d1b00;
  margin: 30px 0 8px;
}
.privacy-card h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  color: #2d1b00;
  margin: 18px 0 6px;
  text-decoration: underline;
}
.privacy-card p,
.privacy-card li,
.privacy-card address {
  font-family: "Montserrat", "Helvetica Neue", sans-serif;
  font-weight: 400;
  font-size: 18px;
  line-height: 1.55;
  color: #2b2b2b;
  margin: 0 0 12px;
  font-style: normal;
}
.privacy-card ol {
  margin: 0 0 12px;
  padding-left: 30px;
}
.privacy-card li { margin-bottom: 8px; }
.privacy-term { text-decoration: underline; font-weight: 500; }
.privacy-copyright { margin-top: 24px; font-size: 15px; color: #555; }