/* ============================================================
   deck.css — Slim tinted header + footer, max middle stage,
              and the start screen (replaces the spinner-only loader).
   ============================================================ */

/* ============================================================
   START SCREEN  (was "deck-loading")
   ============================================================ */
.deck-loading {
  position: fixed;
  inset: 0;
  background: var(--canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity 0.6s var(--ease), visibility 0s linear 0.6s;
}

.deck-loading.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.deck-loading__content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 3rem 2rem;
  text-align: center;
  max-width: 540px;
}

.deck-loading__content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 1px;
  background: var(--punch);
}

.deck-loading__eyebrow {
  font-family: 'Geist', sans-serif;
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.deck-loading__mark {
  font-family: 'Geist', sans-serif;
  font-weight: 300;
  font-size: clamp(3rem, 7vw, 5rem);
  letter-spacing: -0.05em;
  line-height: 1;
  color: var(--ink);
}

.deck-loading__logo {
  height: clamp(56px, 9vh, 96px);
  width: auto;
  display: block;
}

.deck-loading__tag {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--ink-3);
  max-width: 28ch;
}

/* ---------- Status row (line + message) ---------- */
.deck-loading__status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  height: 22px;
  margin-top: 0.5rem;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.deck-loading.is-ready .deck-loading__status {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.deck-loading__line {
  position: relative;
  width: 60px;
  height: 1px;
  background: var(--rule-2);
  overflow: hidden;
}

.deck-loading__line::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  background: var(--punch);
  animation: load-sweep 1.4s var(--ease) infinite;
}

@keyframes load-sweep {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

.deck-loading__msg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}

/* ============================================================
   START BUTTON
   ============================================================ */
.start-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.5rem;
  border: 1px solid var(--ink);
  background: transparent;
  font-family: 'Geist', sans-serif;
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.55s var(--ease-out),
    background 0.25s var(--ease),
    color 0.25s var(--ease);
  margin-top: -0.25rem;
}

.deck-loading.is-ready .start-btn {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition-delay: 0.15s;
}

.start-btn:hover:not(:disabled) {
  background: var(--ink);
  color: var(--canvas);
}

.start-btn:focus-visible {
  outline: 2px solid var(--punch);
  outline-offset: 4px;
}

.start-btn:disabled {
  cursor: not-allowed;
}

.start-btn__arrow {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform 0.25s var(--ease);
}

.start-btn:hover:not(:disabled) .start-btn__arrow {
  transform: translateX(4px);
}

/* ============================================================
   LOADER HINT  (footer of start screen)
   ============================================================ */
.deck-loading__hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  font-family: 'Geist', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.deck-loading.is-ready .deck-loading__hint {
  opacity: 1;
  transition-delay: 0.3s;
}

/* Scoped reset for the inline keyboard chip inside the start screen */
.deck-loading__hint .hint-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.35rem;
  height: 1.25rem;
  min-width: 1.25rem;
  border: 1px solid var(--rule-2);
  background: var(--canvas-tint);
  color: var(--ink-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0;
  text-transform: none;
  font-weight: 500;
}

/* ============================================================
   HEADER — slim, subtly tinted, 52px tall
   ============================================================ */
.deck-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--canvas-2);
  border-bottom: 1px solid var(--rule-2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 clamp(1rem, 2.5vw, 2rem);
  z-index: 10;
  pointer-events: none;
}

.deck-header__brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-family: 'Geist', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}

.deck-header__brand .mark {
  font-family: 'Geist', sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--ink);
}

.deck-header__brand .mark__dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--punch);
  border-radius: 50%;
  margin: 0 0.25em;
  vertical-align: 2px;
}

.deck-header__logo {
  height: 22px;
  width: auto;
  display: block;
}

.deck-header__title {
  font-weight: 500;
  color: var(--ink-3);
}

.deck-header__divider {
  width: 1px;
  height: 12px;
  background: var(--rule-2);
}

/* Dynamic slide eyebrow (centered in the header band).
   JS writes the current slide's eyebrow text here on every transition. */
.deck-header__eyebrow {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Geist', sans-serif;
  font-weight: 500;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--punch);
  white-space: nowrap;
  transition: opacity 0.3s var(--ease);
}

.deck-header__eyebrow::before {
  content: '';
  display: inline-block;
  width: 1.25rem;
  height: 1px;
  background: var(--punch);
}

.deck-header__eyebrow:empty { display: none; }

.deck-header__eyebrow.is-changing {
  opacity: 0;
}

.deck-header__edition {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  font-weight: 400;
  text-transform: uppercase;
}

/* ============================================================
   FOOTER — slim, subtly tinted, 52px tall
   ============================================================ */
.deck-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--footer-h);
  background: var(--canvas-2);
  border-top: 1px solid var(--rule-2);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 clamp(1rem, 2.5vw, 2rem);
  z-index: 10;
}

/* Right-side cluster: keyboard hint + fullscreen toggle, right-aligned. */
.deck-footer__right {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  justify-content: flex-end;
}

/* Fullscreen toggle button */
.deck-fs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--rule-2);
  background: var(--canvas);
  color: var(--ink-3);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s var(--ease),
              color 0.2s var(--ease),
              border-color 0.2s var(--ease),
              transform 0.15s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.deck-fs-btn:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--canvas);
}

.deck-fs-btn:active {
  transform: scale(0.94);
}

.deck-fs-btn:focus-visible {
  outline: 2px solid var(--punch);
  outline-offset: 3px;
}

.deck-fs-btn iconify-icon {
  font-size: 16px;
  display: block;
}

/* Floating variant — small button in the corner of the start screen */
.deck-fs-btn--floating {
  position: absolute;
  top: clamp(1rem, 2vh, 1.5rem);
  right: clamp(1rem, 2vw, 1.5rem);
  z-index: 2;
}

.deck-footer__counter {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
  font-weight: 500;
  min-width: 6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.deck-footer__counter::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--punch);
  border-radius: 50%;
}

.deck-footer__hint {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Geist', sans-serif;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-weight: 500;
  justify-content: flex-end;
  transition: opacity 0.6s var(--ease);
}

/* Hide the keyboard hint on touch devices — irrelevant + saves space */
@media (hover: none) {
  .deck-footer__hint { display: none; }
}

.deck-footer__hint.is-faded { opacity: 0.4; }

.hint-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  border: 1px solid var(--rule-2);
  background: var(--canvas);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0;
  color: var(--ink-2);
}

.hint-label {
  margin-left: 0.4rem;
}

/* ============================================================
   EDGE NAV — 100px click zones on each side of the stage
   Hidden until the deck starts; subtle chevron on hover/touch
   ============================================================ */
.edge-nav {
  position: fixed;
  top: var(--header-h);
  bottom: var(--footer-h);
  width: 100px;
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  z-index: 6;
  display: flex;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
  -webkit-tap-highlight-color: transparent;
}

.edge-nav--prev { left: 0;  justify-content: flex-start; padding-left: 1.25rem; }
.edge-nav--next { right: 0; justify-content: flex-end;   padding-right: 1.25rem; }

body.is-presenting .edge-nav {
  opacity: 1;
  pointer-events: auto;
}

.edge-nav__chev {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--ink-3);
  background: var(--canvas-2);
  border: 1px solid var(--rule-2);
  opacity: 0;
  transform: translateX(0);
  transition:
    opacity 0.25s var(--ease),
    transform 0.25s var(--ease),
    background 0.2s var(--ease),
    color 0.2s var(--ease);
}

/* Reveal the chevron on hover (desktop) */
.edge-nav:hover .edge-nav__chev {
  opacity: 1;
  background: var(--ink);
  color: var(--canvas);
}

.edge-nav--prev:hover .edge-nav__chev { transform: translateX(-3px); }
.edge-nav--next:hover .edge-nav__chev { transform: translateX(3px); }

/* On touch devices, keep the chevrons softly visible at all times */
@media (hover: none) {
  body.is-presenting .edge-nav__chev {
    opacity: 0.45;
  }
  .edge-nav:active .edge-nav__chev {
    opacity: 1;
    background: var(--ink);
    color: var(--canvas);
  }
}

.edge-nav:focus-visible {
  outline: none;
}
.edge-nav:focus-visible .edge-nav__chev {
  outline: 2px solid var(--punch);
  outline-offset: 4px;
}

/* ---------- Dot navigation ---------- */
.deck-nav__dots {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-dot {
  width: 16px;
  height: 2px;
  background: var(--canvas-edge);
  cursor: pointer;
  transition: width 0.35s var(--ease), background 0.35s var(--ease);
  border: 0;
  padding: 0;
}

.nav-dot:hover {
  background: var(--ink-3);
}

.nav-dot.is-active {
  width: 32px;
  background: var(--punch);
}

.nav-dot.is-visited {
  background: var(--ink-muted);
}