/* ═══════════════════════════════════════════════════════════════════════════
   Carlo Schembri — Shared Components
   Used by every page (home, chapters, admin) so the brand reads consistently.
═══════════════════════════════════════════════════════════════════════════ */

/* ── Screen-reader-only utility ───────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ── Universal Button System ──────────────────────────────────────────── */
.btn {
  --btn-pad-y: 16px;
  --btn-pad-x: 32px;
  --btn-bg: transparent;
  --btn-border: rgba(232, 226, 214, 0.22);
  --btn-fg: var(--limestone);
  --btn-accent: var(--bronze-pale);

  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--btn-fg);
  font-family: var(--font-sc);
  font-size: 0.625rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: gap 0.4s var(--ease-out), color 0.3s, border-color 0.3s, background 0.4s;
}
.btn svg { width: 14px; height: 14px; transition: transform 0.4s var(--ease-out); flex-shrink: 0; }
.btn::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--btn-accent);
  transform: translateX(-101%);
  transition: transform 0.6s var(--ease-out);
  z-index: -1;
}
.btn:hover { gap: 22px; border-color: var(--btn-accent); }
.btn:hover svg { transform: translateX(4px); }

/* Primary — filled bronze on hover */
.btn-primary {
  --btn-bg: var(--bronze);
  --btn-border: var(--bronze);
  --btn-fg: var(--ink-deep);
  --btn-accent: var(--bronze-light);
}
.btn-primary:hover { color: var(--ink-deep); }
.btn-primary:hover::before { transform: translateX(0); }

/* Ghost (light bg) */
.btn-ghost-light {
  --btn-border: rgba(30, 26, 22, 0.22);
  --btn-fg: var(--ink);
  --btn-accent: var(--bronze);
}
.btn-ghost-light:hover { color: var(--bronze); }

/* Minimal underline link-button */
.btn-line {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 14px 0;
  font-family: var(--font-sc);
  font-size: 0.625rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: inherit;
  border-bottom: 1px solid currentColor;
  opacity: 0.7;
  cursor: pointer;
  transition: gap 0.4s var(--ease-out), opacity 0.3s, color 0.3s;
}
.btn-line:hover { gap: 22px; opacity: 1; color: var(--bronze-pale); }
.btn-line svg { width: 14px; height: 14px; transition: transform 0.4s var(--ease-out); }
.btn-line:hover svg { transform: translateX(4px); }

/* ── Mobile Navigation Overlay ─────────────────────────────────────────── */
/* .nav-burger is fully defined in navbar.css (44×44px, 900px breakpoint).
   Removed from here to eliminate the conflicting 36×36px / 820px version. */

/* ── Mobile Nav — Cinematic right-side drawer ─────────────────────────
   The drawer panel itself IS .mobile-nav (right-aligned, fixed-width).
   The dim+blur backdrop covering the rest of the viewport is rendered
   via ::before, so a tap on the empty area still bubbles to the panel
   element (matching site.js' `e.target === overlay` close handler).
   The vertical bronze gradient on the inner edge is rendered via
   ::after for a refined editorial accent.
─────────────────────────────────────────────────────────────────────── */
.mobile-nav {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(88vw, 400px);
  z-index: 9550;
  background:
    linear-gradient(155deg, rgba(22, 18, 13, 0.985) 0%, rgba(10, 9, 8, 0.985) 70%),
    radial-gradient(140% 80% at 100% 0%, rgba(196, 167, 108, 0.10), transparent 55%);
  background-blend-mode: normal, screen;
  border-left: 1px solid rgba(196, 167, 108, 0.16);
  box-shadow: -36px 0 90px -16px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(28px) saturate(1.25);
  -webkit-backdrop-filter: blur(28px) saturate(1.25);

  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0;
  padding:
    calc(env(safe-area-inset-top, 0px) + 88px)
    0
    calc(env(safe-area-inset-bottom, 0px) + 110px);
  overflow: hidden;

  transform: translateX(102%);
  pointer-events: none;
  transition: transform 0.55s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
  will-change: transform;
}
.mobile-nav.active {
  transform: translateX(0);
  pointer-events: auto;
}

/* Backdrop — dim + blur the rest of the viewport, click-through to .mobile-nav. */
.mobile-nav::before {
  content: '';
  position: fixed;
  top: 0; bottom: 0; left: 0;
  right: min(88vw, 400px);
  background: rgba(5, 4, 3, 0.55);
  backdrop-filter: blur(8px) saturate(0.9);
  -webkit-backdrop-filter: blur(8px) saturate(0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.55s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1));
}
.mobile-nav.active::before { opacity: 1; pointer-events: auto; }

/* Inner edge bronze gradient line */
.mobile-nav::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(196, 167, 108, 0.55) 22%,
    rgba(196, 167, 108, 0.30) 50%,
    rgba(196, 167, 108, 0.55) 78%,
    transparent 100%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s var(--ease-out);
}
.mobile-nav.active::after { opacity: 1; transition-delay: 0.18s; }

/* ── Nav links ───────────────────────────────────────────────────── */
.mobile-nav a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 18px 28px 18px 32px;
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(1.5rem, 5.4vw, 1.95rem);
  line-height: 1.1;
  letter-spacing: -0.005em;
  color: rgba(232, 226, 214, 0.78);
  text-decoration: none;
  border-bottom: 1px solid rgba(196, 167, 108, 0.08);

  opacity: 0;
  transform: translateX(32px);
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.55s var(--ease-out),
    color 0.3s,
    padding-left 0.3s,
    background 0.3s,
    border-color 0.3s;
}
.mobile-nav a::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 0;
  height: 1px;
  background: var(--bronze-pale, #c4a76c);
  transform: translateY(-50%);
  transition: width 0.45s var(--ease-out);
  pointer-events: none;
}
.mobile-nav a:hover,
.mobile-nav a:focus-visible {
  color: #f4efe3;
  padding-left: 42px;
  background: linear-gradient(90deg, rgba(196, 167, 108, 0.07), transparent 75%);
  border-bottom-color: rgba(196, 167, 108, 0.20);
  outline: 0;
}
.mobile-nav a:hover::before,
.mobile-nav a:focus-visible::before { width: 22px; }

.mobile-nav a[aria-current="page"] {
  color: var(--bronze-pale, #c4a76c);
  background: linear-gradient(90deg, rgba(196, 167, 108, 0.11), transparent 75%);
  padding-left: 42px;
}
.mobile-nav a[aria-current="page"]::before { width: 30px; }

/* Roman / numeral chip in front of each link */
.mobile-nav a em {
  position: static;
  transform: none;
  font-family: var(--font-sc);
  font-style: normal;
  font-weight: 400;
  font-size: 0.56rem;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: rgba(196, 167, 108, 0.62);
  min-width: 28px;
  flex-shrink: 0;
  opacity: 1;
  transition: color 0.3s;
}
.mobile-nav a:hover em,
.mobile-nav a:focus-visible em { color: var(--bronze-pale, #c4a76c); }
.mobile-nav a[aria-current="page"] em { color: var(--bronze-pale, #c4a76c); }

.mobile-nav.active a { opacity: 1; transform: translateX(0); }
.mobile-nav.active a:nth-child(2) { transition-delay: 0.18s; }
.mobile-nav.active a:nth-child(3) { transition-delay: 0.24s; }
.mobile-nav.active a:nth-child(4) { transition-delay: 0.30s; }
.mobile-nav.active a:nth-child(5) { transition-delay: 0.36s; }
.mobile-nav.active a:nth-child(6) { transition-delay: 0.42s; }

/* ── Close button (top-right of drawer) ──────────────────────────── */
.mobile-nav-close {
  position: absolute;
  top: max(22px, calc(env(safe-area-inset-top, 0px) + 22px));
  right: 22px;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(196, 167, 108, 0.30);
  border-radius: 999px;
  background: rgba(20, 17, 14, 0.55);
  color: var(--limestone, #e8e2d6);
  cursor: pointer;
  z-index: 2;
  opacity: 0;
  transform: scale(0.85) rotate(-30deg);
  transition:
    opacity 0.45s var(--ease-out),
    transform 0.45s var(--ease-out),
    color 0.25s,
    border-color 0.25s,
    background 0.25s;
}
.mobile-nav.active .mobile-nav-close {
  opacity: 1;
  transform: none;
  transition-delay: 0.12s;
}
.mobile-nav-close:hover,
.mobile-nav-close:focus-visible {
  color: var(--bronze-pale, #c4a76c);
  border-color: var(--bronze-pale, #c4a76c);
  background: rgba(196, 167, 108, 0.12);
  outline: 0;
}
.mobile-nav-close:active { transform: scale(0.94); }

/* "Menu" eyebrow above the links — drawn from the close button's left side */
.mobile-nav-close::before {
  content: 'Menu';
  position: absolute;
  top: 50%;
  right: calc(100% + 14px);
  transform: translateY(-50%);
  font-family: var(--font-sc);
  font-style: normal;
  font-weight: 400;
  font-size: 9px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: rgba(232, 226, 214, 0.42);
  white-space: nowrap;
  pointer-events: none;
}

/* ── Foot — studio meta + decorative rule ────────────────────────── */
.mobile-nav-foot {
  position: absolute;
  left: 32px;
  right: 32px;
  bottom: max(36px, calc(env(safe-area-inset-bottom, 0px) + 28px));
  padding-top: 22px;
  border-top: 1px solid rgba(196, 167, 108, 0.14);

  font-family: var(--font-sc);
  font-size: 9px;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: rgba(232, 226, 214, 0.42);
  text-align: left;

  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.55s var(--ease-out),
    transform 0.55s var(--ease-out);
}
.mobile-nav.active .mobile-nav-foot {
  opacity: 1;
  transform: none;
  transition-delay: 0.5s;
}
.mobile-nav-foot::before {
  content: '';
  position: absolute;
  top: -1px; left: 0;
  width: 36px;
  height: 1px;
  background: var(--bronze-pale, #c4a76c);
  opacity: 0.7;
}

/* ── Reduced motion ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .mobile-nav,
  .mobile-nav::before,
  .mobile-nav::after,
  .mobile-nav a,
  .mobile-nav-close,
  .mobile-nav-foot {
    transition-duration: 0.001s !important;
  }
}

/* ── Tiny screens (≤360) — tighten paddings ──────────────────────── */
@media (max-width: 360px) {
  .mobile-nav { width: 92vw; }
  .mobile-nav::before { right: 92vw; }
  .mobile-nav a {
    padding: 16px 22px 16px 26px;
    font-size: clamp(1.4rem, 6vw, 1.75rem);
    gap: 14px;
  }
  .mobile-nav a:hover,
  .mobile-nav a:focus-visible,
  .mobile-nav a[aria-current="page"] { padding-left: 34px; }
  .mobile-nav-foot { left: 26px; right: 26px; }
}

/* ── Page Transition Overlay ──────────────────────────────────────────── */
/* Slides in from the right when navigating to "forward" page,
   from the left when navigating "back". Then the new page slides from
   opposite side into place. Result: a cohesive horizontal motion. */
.page-transition {
  position: fixed;
  top: 0; bottom: 0;
  left: 100%;
  width: 100%;
  z-index: 99990;
  background: var(--ink-deep);
  pointer-events: none;
  will-change: transform;
}
.page-transition.direction-back { left: -100%; }
.page-transition::before {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg,
    transparent,
    var(--bronze-pale) 50%,
    transparent);
  opacity: 0.5;
}
.page-transition.direction-back::before { left: auto; right: 0; }

.pt-mark {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: 1rem;
  color: var(--bronze-pale);
  letter-spacing: 0.3em;
  opacity: 0;
  transition: opacity 0.4s;
}
.page-transition.covering .pt-mark { opacity: 1; }

/* Page enter animation — fades/slides content in on load */
body.page-entering {
  animation: pageEnter 0.9s var(--ease-out) both;
}
body.page-entering.direction-back {
  animation: pageEnterBack 0.9s var(--ease-out) both;
}
@keyframes pageEnter {
  0%   { opacity: 0; transform: translateX(60px); }
  100% { opacity: 1; transform: translateX(0); }
}
@keyframes pageEnterBack {
  0%   { opacity: 0; transform: translateX(-60px); }
  100% { opacity: 1; transform: translateX(0); }
}

/* ── Social Icons ──────────────────────────────────────────────────────── */
.social-list {
  display: flex;
  gap: 20px;
  list-style: none;
  padding: 0;
}
.social-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border: 1px solid rgba(232, 226, 214, 0.12);
  border-radius: 50%;
  color: rgba(232, 226, 214, 0.45);
  transition: color 0.3s, border-color 0.3s, transform 0.4s var(--ease-out);
}
.social-list a:hover {
  color: var(--bronze-pale);
  border-color: var(--bronze-pale);
  transform: translateY(-2px);
}
.social-list a svg { width: 14px; height: 14px; }

/* Responsive nav-link/burger breakpoint is in navbar.css (900px).
   Removed conflicting 820px duplicate from here. */