/**
 * Lupopedia.com website — mirrors lupopedia/includes/css/admin-intro-scroll.css
 * Image placeholders in images/ (Wolfie GIMP). Do not stretch 9-slice tiles.
 */

:root {
  --lupo-nav-chip-w: 80px;
  --lupo-nav-chip-h: 60px;
  --lupo-nav-h: var(--lupo-nav-chip-h);
  --lupo-scroll-edge: 42px;
  --lupo-mid-rail-w: 54px;
  --lupo-parchment-mid: #e8dcc8;
  --lupo-parchment-side: #c4a574;
  --lupo-parchment-ink: #2c2419;
}

.lupo-app,
.lupo-app div:not(.lupo-intro-sq),
.lupo-app header,
.lupo-app nav {
  border: 0;
  outline: none;
}

#lupo-intro-overlay {
  border: 0;
  outline: none;
  box-shadow: none;
}

body.lupo-intro-active {
  overflow: hidden;
}

body.lupo-desktop {
  margin: 0;
  background: #2c2419;
}

.lupo-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.lupo-app--scroll-mode {
  height: 100vh;
  min-height: 100vh;
  max-height: 100vh;
  overflow: hidden;
}

/* ---- Intro overlay (Lupopedia #admin-intro-overlay) ---- */
#lupo-intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 200000;
  background: radial-gradient(circle at 50% 35%, #e3f4fc 0%, #b8dff7 50%, #9fd4ef 100%);
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.45s ease-out;
}

#lupo-intro-overlay.lupo-intro--hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

/* Intro chips — mirrors .admin-intro-sq (do not zero margin; centers stack) */
.lupo-intro-sq {
  position: fixed;
  width: var(--lupo-nav-chip-w);
  height: var(--lupo-nav-chip-h);
  left: 50%;
  top: 50%;
  margin-left: calc(var(--lupo-nav-chip-w) * -0.5);
  margin-top: calc(var(--lupo-nav-chip-h) * -0.5);
  padding: 0;
  border: none;
  box-sizing: border-box;
  background-color: #7eb8d6;
  background-image: url('images/nav-chip.png');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  color: #ffffcc;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  z-index: 1;
  pointer-events: auto;
  will-change: transform, left, top, margin;
  visibility: visible;
  opacity: 1;
}

.lupo-intro-sq span {
  pointer-events: none;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 72px;
  white-space: nowrap;
  font-size: 10px;
  line-height: 1.1;
  text-align: center;
  color: #ffffcc;
}

.lupo-intro-sq:visited,
.lupo-intro-sq:hover {
  color: #ffffcc;
}

#lupo-intro-overlay .lupo-intro-sq:nth-child(1) { z-index: 1; }
#lupo-intro-overlay .lupo-intro-sq:nth-child(2) { z-index: 2; }
#lupo-intro-overlay .lupo-intro-sq:nth-child(3) { z-index: 3; }
#lupo-intro-overlay .lupo-intro-sq:nth-child(4) { z-index: 4; }
#lupo-intro-overlay .lupo-intro-sq:nth-child(5) { z-index: 5; }
#lupo-intro-overlay .lupo-intro-sq:nth-child(6) { z-index: 6; }

/* ---- Scroll shell (Lupopedia #admin-scroll-shell) ---- */
#lupo-scroll-shell {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  opacity: 0;
  transition: opacity 0.4s ease-in;
}

.lupo-app--shell-ready #lupo-scroll-shell {
  opacity: 1;
}

/* Nav inside shell (Lupopedia .admin-nav-row) */
.lupo-nav-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  height: var(--lupo-nav-h);
  flex-shrink: 0;
  background: #2d3748;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  padding: 0 10px;
  box-sizing: border-box;
}

.lupo-nav-brand {
  flex: 0 0 auto;
  margin-right: 12px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #e8dcc8;
}

.lupo-nav-brand a {
  color: #e8dcc8;
  text-decoration: none;
}

.lupo-nav-slots {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  flex-shrink: 0;
}

.lupo-nav-slot {
  width: var(--lupo-nav-chip-w);
  height: var(--lupo-nav-chip-h);
  box-sizing: border-box;
  background-color: #7eb8d6;
  background-image: url('images/nav-chip.png');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  color: #ffffcc;
  font-weight: 700;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  text-align: center;
  padding: 2px;
  line-height: 1.1;
  overflow: hidden;
}

.lupo-nav-slot span {
  color: #ffffcc;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 72px;
  white-space: nowrap;
}

.lupo-nav-slot:hover {
  filter: brightness(1.08);
  color: #ffffcc;
}

/* ---- Scroll frame ---- */
.lupo-scroll-frame {
  display: flex;
  flex-direction: column;
  width: 100%;
  flex: 1;
  min-height: 0;
  height: calc(100vh - var(--lupo-nav-h));
  background: #2c2419;
}

.lupo-app--scroll-mode .lupo-scroll-frame {
  height: auto;
  flex: 1;
}

.lupo-scroll-row {
  display: flex;
  flex-direction: row;
  width: 100%;
  flex-shrink: 0;
  gap: 0;
}

.lupo-scroll-row--top,
.lupo-scroll-row--bottom {
  height: var(--lupo-scroll-edge);
}

.lupo-scroll-row--mid {
  height: 0;
  min-height: 0;
  overflow: hidden;
  transition: height 1.1s cubic-bezier(0.4, 0, 0.2, 1);
}

.lupo-app--mid-expanded .lupo-scroll-row--mid {
  height: calc(100vh - var(--lupo-nav-h) - (2 * var(--lupo-scroll-edge)));
  min-height: 120px;
}

.lupo-scroll-cap {
  width: var(--lupo-scroll-edge);
  flex-shrink: 0;
  background-color: var(--lupo-parchment-side);
  background-repeat: no-repeat;
  background-size: auto;
}

.lupo-scroll-row--top .lupo-scroll-cap--l {
  background-image: url('images/scroll-top-l.png');
  background-position: left top;
}

.lupo-scroll-row--top .lupo-scroll-center {
  background-color: var(--lupo-parchment-mid);
  background-image: url('images/scroll-top-c.png');
  background-repeat: repeat-x;
  background-position: top left;
  background-size: auto;
}

.lupo-scroll-row--top .lupo-scroll-cap--r {
  background-image: url('images/scroll-top-r.png');
  background-position: right top;
}

.lupo-scroll-row--mid .lupo-scroll-cap--l {
  background-image: url('images/scroll-mid-l.png');
  background-repeat: repeat-y;
  background-position: left top;
}

.lupo-scroll-row--mid .lupo-scroll-cap--r {
  background-image: url('images/scroll-mid-r.png');
  background-repeat: repeat-y;
  background-position: right top;
}

.lupo-scroll-row--bottom .lupo-scroll-cap--l {
  background-image: url('images/scroll-bot-l.png');
  background-position: left bottom;
}

.lupo-scroll-row--bottom .lupo-scroll-center {
  background-color: var(--lupo-parchment-mid);
  background-image: url('images/scroll-bot-c.png');
  background-repeat: repeat-x;
  background-position: bottom left;
  background-size: auto;
}

.lupo-scroll-row--bottom .lupo-scroll-cap--r {
  background-image: url('images/scroll-bot-r.png');
  background-position: right bottom;
}

.lupo-scroll-center {
  flex: 1;
  min-width: 0;
  background-color: var(--lupo-parchment-mid);
  background-repeat: repeat;
  background-size: auto;
}

/* Mid band: static rails + scroll center (website content column) */
.lupo-scroll-row--mid > .lupo-scroll-center--mid {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  min-height: 0;
  overflow: hidden;
  background-image: url('images/middle-bg.png');
  background-repeat: repeat;
  background-position: top left;
  background-size: auto;
}

.lupo-mid-left {
  flex-shrink: 0;
  width: var(--lupo-mid-rail-w);
  background-color: var(--lupo-parchment-side);
  background-image: url('images/mid-left-bg.png');
  background-repeat: repeat-y;
  background-position: left top;
  background-size: auto;
  overflow: hidden;
}

.lupo-mid-right {
  flex-shrink: 0;
  width: var(--lupo-mid-rail-w);
  background-color: var(--lupo-parchment-side);
  background-image: url('images/mid-right-bg.png');
  background-repeat: repeat-y;
  background-position: right top;
  background-size: auto;
  overflow: hidden;
}

#middle-scroll-container {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background-color: var(--lupo-parchment-mid);
  background-image: url('images/middle-bg.png');
  background-repeat: repeat;
  background-position: top left;
  background-size: auto;
}

.lupo-app--mid-expanded #middle-scroll-container {
  overflow-y: auto;
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

#middle-scroll-content {
  padding: 20px;
  min-height: 0;
}

.lupo-scroll-body {
  max-width: 48rem;
  color: var(--lupo-parchment-ink);
}

.lupo-scroll-body .hero {
  padding: 0 0 2rem;
}

.lupo-scroll-body .section {
  padding: 2rem 0;
}

.lupo-scroll-body .hero h1 {
  color: var(--lupo-parchment-ink);
  font-size: clamp(1.35rem, 3.5vw + 0.5rem, 1.85rem);
}

.lupo-scroll-body .hero-subtext {
  color: #4a3f32;
}

.lupo-scroll-body .section h2 {
  color: #5c4033;
}

.lupo-scroll-body a {
  color: #2a5f6e;
}

.lupo-scroll-body a:hover {
  color: #1a4552;
}

@media (prefers-reduced-motion: reduce) {
  #lupo-intro-overlay,
  #lupo-scroll-shell,
  .lupo-scroll-row--mid {
    transition: none !important;
  }
  .lupo-intro-sq {
    transition: none !important;
  }
}