/* ==========================================================================
   CHAOS — BOOK ONE: CHARACTERS PAGE
   Thumbnail roster, alliance filter, and full-portrait modal.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Faction filter bar
   -------------------------------------------------------------------------- */

.faction-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: var(--space-xl);
}

.faction-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background-color: transparent;
  border: 1px solid var(--color-border-subtle);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              background-color var(--transition-fast);
}

.faction-btn:hover,
.faction-btn:focus-visible {
  color: var(--color-text-bright);
  border-color: var(--color-primary-red);
  outline: none;
}

.faction-btn.active {
  color: var(--color-bg-base);
  background-color: var(--color-primary-red);
  border-color: var(--color-primary-red);
}

/* --------------------------------------------------------------------------
   Thumbnail grid — deliberately small so the whole cast reads at a glance.
   -------------------------------------------------------------------------- */

.character-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-lg);
  width: 100%;
  box-sizing: border-box;
}

.character-card {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.character-card[hidden] { display: none; }

.character-thumb-btn {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-surface);
  overflow: hidden;
  cursor: pointer;
  line-height: 0;
  transition: border-color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-normal);
}

.character-thumb-btn:hover,
.character-thumb-btn:focus-visible {
  border-color: var(--color-primary-red);
  box-shadow: 0 0 20px rgba(225, 29, 72, 0.3);
  transform: translateY(-3px);
  outline: none;
}

/* Portraits vary in aspect ratio; a fixed 3:4 frame with cover keeps the
   grid even, and centre-top framing keeps faces in shot. */
.character-thumb {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center 22%;
  filter: saturate(0.9) contrast(1.04);
  transition: filter var(--transition-normal);
}

.character-thumb-btn:hover .character-thumb,
.character-thumb-btn:focus-visible .character-thumb {
  filter: saturate(1) contrast(1.08);
}

.character-caption {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}

.character-name {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-bright);
  line-height: 1.3;
}

.character-faction {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid currentColor;
  opacity: 0.85;
}

/* Faction colour coding — visual grouping only, asserts nothing about plot. */
.faction-team      { color: var(--color-accent-cyan-bright); }
.faction-momentum  { color: var(--color-primary-red); }
.faction-allies    { color: #c3a86b; }
.faction-unaligned { color: var(--color-text-muted); }

/* --------------------------------------------------------------------------
   Portrait modal
   -------------------------------------------------------------------------- */

.portrait-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background-color: rgba(5, 7, 14, 0.95);
  box-sizing: border-box;
}

.portrait-modal.open { display: flex; }

body.modal-open { overflow: hidden; }

.modal-figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: 100%;
  max-height: 100%;
}

.modal-image {
  display: block;
  max-width: min(520px, 100%);
  max-height: 70vh;
  width: auto;
  height: auto;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.modal-caption {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.modal-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-bright);
  margin: 0;
}

.modal-faction {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 12px;
  border-radius: 999px;
  border: 1px solid currentColor;
}

.modal-blurb {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin: 0;
  max-width: 40ch;
}

.modal-close,
.modal-nav {
  position: absolute;
  background-color: rgba(15, 20, 32, 0.85);
  border: 1px solid var(--color-border-subtle);
  color: var(--color-text-bright);
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover,
.modal-nav:hover,
.modal-close:focus-visible,
.modal-nav:focus-visible {
  border-color: var(--color-primary-red);
  color: var(--color-primary-red);
  outline: none;
}

.modal-close {
  top: var(--space-lg);
  right: var(--space-lg);
  width: 42px;
  height: 42px;
  font-size: 1.6rem;
  line-height: 1;
}

.modal-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  font-size: 2rem;
  line-height: 1;
}

.modal-prev { left: var(--space-lg); }
.modal-next { right: var(--space-lg); }

@media (max-width: 768px) {
  .character-grid {
    grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
    gap: var(--space-md);
  }
  .character-name { font-size: 0.7rem; }
  .character-faction { font-size: 0.56rem; }

  .portrait-modal { padding: var(--space-md); }
  .modal-image { max-height: 58vh; }
  .modal-close { top: var(--space-md); right: var(--space-md); }
  /* Arrows move below the image so they never sit over the portrait. */
  .modal-nav { top: auto; bottom: var(--space-md); transform: none; }
  .modal-prev { left: var(--space-md); }
  .modal-next { right: var(--space-md); }
}

@media (prefers-reduced-motion: reduce) {
  .character-thumb-btn,
  .character-thumb { transition: none; }
  .character-thumb-btn:hover { transform: none; }
}