/* ==========================================================================
   GBHS Sports Hall of Fame — digital book
   ========================================================================== */

:root {
  --gb-green:        #14562F;
  --gb-green-dark:   #0A2E19;
  --gb-green-deep:   #061A0E;
  --gb-green-light:  #2E8B57;
  --gb-green-glow:   #57C98A;

  --silver-50:  #FBFCFC;
  --silver-100: #EEF1F2;
  --silver-200: #DDE2E4;
  --silver-300: #C4CBCF;
  --silver-400: #A6AFB4;
  --silver-500: #868F95;
  --silver-700: #545C61;

  --ink:      #191D1F;
  --ink-soft: #464E52;

  --page-w: 520px;
  --page-h: 720px;
  --leaf-ms: 820ms;

  --serif:   "Lora", Georgia, "Times New Roman", serif;
  --display: "Cinzel", Georgia, serif;
  --cond:    "Oswald", "Arial Narrow", Impact, sans-serif;
  --ui:      system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --shadow-deep: 0 24px 70px rgba(0,0,0,.55), 0 4px 14px rgba(0,0,0,.4);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--ui);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 50% 12%, #1d4d31 0%, #0d2a1a 45%, #061109 100%),
    var(--gb-green-deep);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Brushed-metal surface, reused on plates and covers ---------------------- */
.brushed {
  background-image:
    repeating-linear-gradient(90deg,
      rgba(255,255,255,.55) 0 1px,
      rgba(255,255,255,0)   1px 3px,
      rgba(0,0,0,.05)       3px 4px),
    linear-gradient(168deg,
      #FAFBFB 0%, #D3D9DC 18%, #EFF2F3 34%,
      #B6BFC4 52%, #E7EBEC 68%, #C0C8CC 84%, #F3F5F6 100%);
}

/* ==========================================================================
   Chrome: masthead + controls
   ========================================================================== */

.masthead {
  flex: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,0));
}
.masthead img { height: 38px; width: auto; flex: none; }
.masthead h1 {
  margin: 0;
  font: 600 15px/1.2 var(--display);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--silver-100);
}
.masthead .anniv {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--silver-400);
}
@media (max-width: 760px) { .masthead .anniv { display: none; } }

.stage {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 24px 16px 8px;
  perspective: 2600px;
  min-height: 0;
}

.controls {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 12px 16px 22px;
}
.controls button {
  font: 500 13px/1 var(--ui);
  color: var(--silver-100);
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
  transition: background .15s, border-color .15s, opacity .15s;
}
.controls button:hover:not(:disabled) {
  background: rgba(87,201,138,.2);
  border-color: var(--gb-green-glow);
}
.controls button:disabled { opacity: .3; cursor: default; }
.controls .folio {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--silver-400);
  min-width: 150px;
  text-align: center;
}

/* ==========================================================================
   The book
   ========================================================================== */

.book {
  position: relative;
  width: calc(var(--page-w) * 2);
  height: var(--page-h);
  transform-style: preserve-3d;
  transition: transform var(--leaf-ms) cubic-bezier(.3,.1,.2,1);
  filter: drop-shadow(0 30px 50px rgba(0,0,0,.55));
}
/* Closed at the front, the single visible page sits centred. */
.book.at-cover  { transform: translateX(calc(var(--page-w) / -2)); }
.book.at-end    { transform: translateX(calc(var(--page-w) / 2)); }

.leaf {
  position: absolute;
  top: 0; left: 50%;
  width: var(--page-w);
  height: var(--page-h);
  transform-origin: left center;
  transform-style: preserve-3d;
  transition: transform var(--leaf-ms) cubic-bezier(.4,.05,.25,1);
}
.leaf.flipped { transform: rotateY(-180deg); }

.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  background: var(--silver-50);
  display: flex;
  flex-direction: column;
}
.face.back { transform: rotateY(180deg); }

/* Gutter shading so the spine reads as a fold. */
.face.front { border-radius: 0 5px 5px 0; }
.face.back  { border-radius: 5px 0 0 5px; }
.face.front::after,
.face.back::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 44px;
  pointer-events: none;
  z-index: 5;
}
.face.front::after { left: 0;  background: linear-gradient(90deg, rgba(0,0,0,.26), rgba(0,0,0,0)); }
.face.back::after  { right: 0; background: linear-gradient(270deg, rgba(0,0,0,.26), rgba(0,0,0,0)); }

/* ==========================================================================
   Page furniture
   ========================================================================== */

.page {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 40px 42px 34px;
  min-height: 0;
  background:
    linear-gradient(180deg, rgba(20,86,47,.05), rgba(20,86,47,0) 220px),
    var(--silver-50);
}
.face.front .page { padding-left: 56px; }
.face.back  .page { padding-right: 56px; }

.page-num {
  position: absolute;
  bottom: 14px;
  font: 500 10px/1 var(--ui);
  letter-spacing: .18em;
  color: var(--silver-400);
}
.face.front .page-num { right: 24px; }
.face.back  .page-num { left: 24px; }

.eyebrow {
  font: 500 10px/1 var(--cond);
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--gb-green-light);
  margin-bottom: 14px;
  flex: none;
}

/* Engraved nameplate ------------------------------------------------------ */
.plate { flex: none; margin-bottom: 18px; }
.plate img { display: block; width: 100%; max-width: 330px; height: auto; margin: 0 auto; }

.nameline { flex: none; margin-bottom: 8px; }
.nameline h2 {
  margin: 0;
  font: 600 34px/1.05 var(--cond);
  letter-spacing: .01em;
  color: var(--gb-green);
}
.nameline .meta {
  margin-top: 6px;
  font: 400 12px/1.4 var(--ui);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--silver-500);
}

.rule {
  flex: none;
  height: 2px;
  margin: 16px 0 18px;
  background: linear-gradient(90deg, var(--gb-green), var(--silver-300) 60%, transparent);
}

.tagline {
  font: italic 500 15px/1.5 var(--serif);
  color: var(--gb-green);
}

/* Portrait page ----------------------------------------------------------- */
.portrait {
  flex: 1;
  min-height: 0;
  margin: 4px 0 16px;
  border-radius: 8px;
  overflow: hidden;
  background: #0d1a12;
  box-shadow: 0 10px 26px rgba(0,0,0,.28), 0 0 0 1px rgba(0,0,0,.1);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; display: block; }
.portrait + .tagline { text-align: center; }

/* Highlights page --------------------------------------------------------- */
.highlights { list-style: none; margin: 0; padding: 0; flex: 1; min-height: 0; }
.highlights li {
  position: relative;
  padding: 0 0 15px 22px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--silver-200);
  font: 400 13.5px/1.55 var(--serif);
  color: var(--ink-soft);
}
.highlights li:last-child { border-bottom: 0; }
.highlights li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  background: var(--gb-green);
  transform: rotate(45deg);
}
.highlights strong {
  display: block;
  font: 500 12px/1.3 var(--cond);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gb-green);
  margin-bottom: 3px;
}

.note {
  flex: none;
  margin-top: 14px;
  padding: 14px 16px;
  border-left: 3px solid var(--gb-green-light);
  background: rgba(20,86,47,.05);
  font: 400 12.5px/1.6 var(--serif);
  color: var(--ink-soft);
}

/* Gallery page ------------------------------------------------------------ */
.gallery {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: 1fr;
  gap: 10px;
}
.gallery figure {
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background: #0d1a12;
  box-shadow: 0 4px 14px rgba(0,0,0,.22);
  cursor: zoom-in;
}
.gallery img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s; }
.gallery figure:hover img { transform: scale(1.05); }
/* An upright photograph gets an upright frame; a landscape one stays wide.
   Without this every photo is squeezed into the same mask and heads get cut. */
.gallery figure.tall { grid-row: span 2; }
.gallery figure.wide { grid-row: span 1; }
.gallery figure.full { grid-column: span 2; }

/* Biography page ---------------------------------------------------------- */
.retro.bio { margin-top: 12px; }
.retro.bio p { font-size: 12.5px; line-height: 1.66; text-align: left; }

/* Retrospective page ------------------------------------------------------ */
.retro { flex: 1; min-height: 0; overflow-y: auto; padding-right: 6px; }
.retro p {
  margin: 0 0 12px;
  font: 400 13px/1.7 var(--serif);
  color: var(--ink-soft);
  text-align: justify;
  hyphens: auto;
}
.retro p:first-child::first-letter,
.retro h4:first-child + p::first-letter {
  float: left;
  font: 600 46px/.86 var(--display);
  color: var(--gb-green);
  padding: 4px 8px 0 0;
}
.retro h4 {
  margin: 18px 0 8px;
  font: 500 10px/1 var(--cond);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gb-green);
}
.retro h4:first-child { margin-top: 0; }
.byline {
  flex: none;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--silver-200);
  font: 500 12px/1.4 var(--ui);
  color: var(--gb-green);
}
.byline span { display: block; font-weight: 400; color: var(--silver-500); font-size: 11px; margin-top: 2px; }

/* Thin scrollbar inside pages */
.retro::-webkit-scrollbar { width: 5px; }
.retro::-webkit-scrollbar-thumb { background: var(--silver-300); border-radius: 3px; }

/* ==========================================================================
   Special pages: cover, contents, colophon
   ========================================================================== */

.page.cover,
.page.backcover {
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 44px 40px;
  color: var(--silver-100);
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(87,201,138,.18), transparent 60%),
    linear-gradient(170deg, #1a5e34 0%, #0d3a1f 42%, #061a0e 100%);
  border: 1px solid rgba(255,255,255,.08);
}
.page.cover::before,
.page.backcover::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(214,222,226,.34);
  pointer-events: none;
}
.page.cover::after,
.page.backcover::after {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px solid rgba(214,222,226,.14);
  pointer-events: none;
}
.cover .crest { width: 168px; height: auto; margin-bottom: 22px; filter: drop-shadow(0 8px 20px rgba(0,0,0,.6)); }
.cover .school {
  font: 400 11px/1.5 var(--ui);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--silver-300);
  margin-bottom: 18px;
}
.cover h2 {
  margin: 0;
  font: 600 38px/1.12 var(--display);
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--silver-50);
  text-shadow: 0 2px 16px rgba(0,0,0,.5);
}
.cover .class {
  margin-top: 16px;
  padding: 9px 26px;
  border-top: 1px solid rgba(214,222,226,.3);
  border-bottom: 1px solid rgba(214,222,226,.3);
  font: 400 13px/1 var(--cond);
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--gb-green-glow);
}
.cover .motto {
  margin-top: auto;
  padding-top: 26px;
  font: 500 13px/1 var(--cond);
  letter-spacing: .18em;
  color: var(--silver-300);
}
.cover .when { margin-top: 10px; font-size: 11px; letter-spacing: .16em; color: var(--silver-500); text-transform: uppercase; }

/* Contents ---------------------------------------------------------------- */
.contents { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 2px; }
.toc-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 8px;
  border: 0;
  background: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  font-family: var(--ui);
  transition: background .15s;
}
.toc-item:hover { background: rgba(20,86,47,.08); }
.toc-item .idx {
  font: 500 11px/1 var(--cond);
  color: var(--silver-400);
  width: 20px;
  flex: none;
  font-variant-numeric: tabular-nums;
}
.toc-item .who { font: 500 14px/1.2 var(--cond); color: var(--gb-green); letter-spacing: .02em; }
.toc-item .dots { flex: 1; border-bottom: 1px dotted var(--silver-300); transform: translateY(-3px); }
.toc-item .what { font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--silver-500); flex: none; }

.dedication p {
  font: 400 13px/1.75 var(--serif);
  color: var(--ink-soft);
  margin: 0 0 13px;
}

/* Colophon / QR ----------------------------------------------------------- */
.colophon { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 16px; }
.colophon img { width: 150px; height: 150px; background: #fff; padding: 8px; border-radius: 8px; }
.colophon p { font: 400 12px/1.7 var(--serif); color: var(--ink-soft); margin: 0; max-width: 300px; }
.colophon .qr-cap {
  margin-top: -6px;
  font: 500 10px/1.4 var(--cond);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gb-green);
}

/* ==========================================================================
   Lightbox
   ========================================================================== */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  place-items: center;
  padding: 5vmin;
  background: rgba(4,12,7,.93);
  backdrop-filter: blur(6px);
}
.lightbox.open { display: grid; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 6px;
  box-shadow: var(--shadow-deep);
}
.lightbox button {
  position: absolute;
  top: 20px; right: 24px;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.08);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
}

/* ==========================================================================
   Phone: one page at a time
   ========================================================================== */

@media (max-width: 900px), (max-height: 620px) {
  :root { --leaf-ms: 340ms; }

  .stage { padding: 12px 10px 4px; perspective: none; }

  .book {
    width: min(94vw, 460px);
    height: min(74dvh, 680px);
    transform: none !important;
    filter: drop-shadow(0 14px 30px rgba(0,0,0,.5));
  }

  /* Leaves stop being sheets; every page becomes its own slide. */
  /* A leaf keeps `transform-style: preserve-3d` from the desktop rules, and that
     makes it a containing block for its absolutely-positioned faces — even
     though it is `position: static` here. With the leaf collapsed to zero
     height, every face inset to 0 collapsed with it and the book rendered
     blank on a phone. Flatten the leaf so the faces size against .book. */
  .leaf {
    position: static;
    width: auto; height: auto;
    transform: none !important;
    transform-style: flat;
    transition: none;
  }
  .face {
    position: absolute;
    inset: 0;
    transform: none !important;
    backface-visibility: visible;
    -webkit-backface-visibility: visible;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--leaf-ms) ease, transform var(--leaf-ms) ease;
  }
  .face.is-current { opacity: 1; pointer-events: auto; z-index: 3; }
  .face.front::after, .face.back::after { display: none; }
  .face.front .page, .face.back .page { padding: 26px 22px 30px; }

  .nameline h2 { font-size: 27px; }
  .plate img { max-width: 260px; }
  .highlights li { font-size: 12.5px; padding-bottom: 11px; margin-bottom: 10px; }
  .retro p { font-size: 12.5px; text-align: left; }
  .cover h2 { font-size: 28px; }
  .cover .crest { width: 120px; }

  .controls { gap: 10px; padding: 10px 12px 18px; }
  .controls .folio { min-width: 110px; font-size: 11px; }
  .controls button { padding: 9px 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .book, .leaf, .face { transition-duration: 1ms !important; }
}

/* A leaf caught mid-turn casts its own shadow across the spread. The shadow
   goes on the faces, not the leaf: a `filter` on the leaf flattens its 3D
   context, which disables backface culling and shows the pages mirrored. */
.leaf.turning .face { box-shadow: -14px 8px 26px rgba(0,0,0,.42); }