/* ═══════════════════════════════════════════
   r2X — index.css  (Homepage)
   ═══════════════════════════════════════════ */

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* ── SLIDER WRAPPER ── */
#slider {
  position: fixed;
  inset: 0;
  transition: background-color 0.8s var(--ease-in-out);
  overflow: hidden;
}

/* ── GRAIN OVERLAY ── */
#slider::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  pointer-events: none;
  z-index: 3;
  opacity: 0.6;
}

/* ── GIANT BG TEXT ── */
#bg-text {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: clamp(130px, 19vw, 240px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.02em;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  will-change: transform;
  transition: color 0.8s var(--ease-in-out);
  z-index: 1;
}

/* ── NAV ── */
nav {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px 40px;
}

.nav-logo {
  font-family: var(--font-body);
  font-size: 26px;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.04em;
  text-decoration: none;
  cursor: none;
  display: flex;
  align-items: flex-start;
  line-height: 1;
  gap: 0;
  position: relative;
}
.nav-logo .logo-dot {
  display: block;
  width: 7px;
  height: 7px;
  background: #fff;
  border-radius: 50%;
  margin-top: 3px;
  margin-left: 1px;
}

.nav-about {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  cursor: none;
  letter-spacing: -0.01em;
  transition: opacity 0.2s;
}
.nav-about:hover { opacity: 0.7; }

/* ── PROGRESS BAR (left side) ── */
#progress-bar {
  position: absolute;
  left: 40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.prog-track {
  width: 2px;
  height: 72px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
  overflow: hidden;
}
.prog-fill {
  width: 100%;
  background: #fff;
  border-radius: 2px;
  transition: height 0.6s var(--ease-out-expo);
  transform-origin: top;
}
.prog-dots {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}
.prog-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transition: background 0.4s, transform 0.4s;
  cursor: none;
}
.prog-dot.active {
  background: #fff;
  transform: scale(1.4);
}

/* ── CENTRE STAGE ── */
#stage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  pointer-events: none;
  will-change: transform;
}

/* ── PAPER SHAPES ── */
.paper-top,
.paper-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.paper-top {
  width: 230px;
  height: 215px;
  margin-bottom: -14px;
  animation: floatUp 5s ease-in-out infinite;
}
.paper-bottom {
  width: 230px;
  height: 165px;
  margin-top: -14px;
  animation: floatDown 5s ease-in-out infinite;
}
.paper-top svg,
.paper-bottom svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.22));
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-10px) rotate(0.8deg); }
  66%       { transform: translateY(-5px) rotate(-0.5deg); }
}
@keyframes floatDown {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(8px) rotate(-0.6deg); }
  66%       { transform: translateY(4px) rotate(0.4deg); }
}

/* ── PROJECT CARD ── */
.proj-card {
  width: 248px;
  height: 248px;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,0.3), 0 0 0 1px rgba(255,255,255,0.06);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 11;
  transition: background-color 0.7s var(--ease-in-out);
}
.proj-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  height: 100%;
  padding: 28px;
}
.card-title-top,
.card-title-bot {
  display: block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: #fff;
  text-align: center;
  line-height: 1.4;
}
.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-icon svg {
  width: 58px;
  height: 58px;
  opacity: 0.88;
}

/* ── BOTTOM BAR ── */
#bottom-bar {
  position: absolute;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50px;
  padding: 8px 8px 8px 18px;
  min-width: 360px;
  justify-content: space-between;
}

.bar-grid-btn {
  width: 38px;
  height: 38px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 3px;
  align-items: center;
  justify-items: center;
  cursor: none;
  padding: 6px;
}
.bar-grid-btn span {
  display: block;
  width: 4px;
  height: 4px;
  background: rgba(255,255,255,0.75);
  border-radius: 1px;
  transition: background 0.2s;
}
.bar-grid-btn:hover span { background: #fff; }

.bar-name {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  flex: 1;
  text-align: center;
  transition: opacity 0.3s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0 12px;
}
.bar-name.fade { opacity: 0; }

.bar-arrow-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: none;
  transition: background 0.2s;
  flex-shrink: 0;
  border: 1px solid rgba(255,255,255,0.12);
}
.bar-arrow-btn:hover { background: rgba(255,255,255,0.3); }
.bar-arrow-btn svg { width: 16px; height: 16px; }

/* ── CORNER LABELS ── */
#bottom-left {
  position: absolute;
  bottom: 30px;
  left: 40px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
}
#bottom-left .sep-dot {
  width: 4px;
  height: 4px;
  background: rgba(255,255,255,0.45);
  border-radius: 50%;
}
#bottom-left a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  cursor: none;
  transition: color 0.2s;
}
#bottom-left a:hover { color: #fff; }
#bottom-left a.active { color: #fff; }

#bottom-right {
  position: absolute;
  bottom: 30px;
  right: 40px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
}
#bottom-right .sep-dot {
  width: 4px;
  height: 4px;
  background: rgba(255,255,255,0.45);
  border-radius: 50%;
}
#bottom-right a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  cursor: none;
  transition: color 0.2s;
}
#bottom-right a:hover { color: #fff; }

/* ── SLIDE TRANSITIONS ── */
#stage.exit-up   { animation: stageExitUp   0.65s var(--ease-in-out) forwards; }
#stage.exit-down { animation: stageExitDown 0.65s var(--ease-in-out) forwards; }
#stage.enter-up  { animation: stageEnterUp  0.65s var(--ease-out-expo) forwards; }
#stage.enter-down{ animation: stageEnterDown 0.65s var(--ease-out-expo) forwards; }

@keyframes stageExitUp {
  from { transform: translate(-50%, -50%); opacity: 1; }
  to   { transform: translate(-50%, calc(-50% - 90vh)); opacity: 0; }
}
@keyframes stageExitDown {
  from { transform: translate(-50%, -50%); opacity: 1; }
  to   { transform: translate(-50%, calc(-50% + 90vh)); opacity: 0; }
}
@keyframes stageEnterUp {
  from { transform: translate(-50%, calc(-50% + 90vh)); opacity: 0; }
  to   { transform: translate(-50%, -50%); opacity: 1; }
}
@keyframes stageEnterDown {
  from { transform: translate(-50%, calc(-50% - 90vh)); opacity: 0; }
  to   { transform: translate(-50%, -50%); opacity: 1; }
}