/* ═══════════════════════════════════════════
   TAMIL LITERATURE — INTERACTIONS CSS
═══════════════════════════════════════════ */

/* ─── SCROLL REVEAL ─── */
.scroll-hidden {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-hidden.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered siblings */
.scroll-hidden:nth-child(2) { transition-delay: 0.08s; }
.scroll-hidden:nth-child(3) { transition-delay: 0.16s; }
.scroll-hidden:nth-child(4) { transition-delay: 0.24s; }
.scroll-hidden:nth-child(5) { transition-delay: 0.32s; }
.scroll-hidden:nth-child(6) { transition-delay: 0.40s; }

/* ─── NAV SCROLLED STATE ─── */
.nav--scrolled {
  padding-top: 0.8rem !important;
  padding-bottom: 0.8rem !important;
  background: rgba(15,10,6,0.96) !important;
  border-bottom: 1px solid rgba(201,152,58,0.12);
}

/* ─── ACTIVE NAV ─── */
.nav-links a.nav-active {
  color: var(--gold) !important;
}
.nav-links a.nav-active::after {
  width: 100% !important;
}

/* ─── PAGE TRANSITIONS ─── */
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

main {
  animation: pageEnter 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* ─── LINK HOVER GLOW ─── */
.btn--primary:hover {
  box-shadow: 0 0 24px rgba(139,26,26,0.4);
}

.btn--gold:hover {
  box-shadow: 0 0 24px rgba(201,152,58,0.3);
}

/* ─── CURSOR CUSTOM ─── */
@media (pointer: fine) {
  body { cursor: none; }

  .custom-cursor {
    position: fixed;
    top: 0; left: 0;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--gold);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.1s, width 0.25s, height 0.25s, opacity 0.25s;
    mix-blend-mode: difference;
  }

  .custom-cursor-ring {
    position: fixed;
    top: 0; left: 0;
    width: 32px; height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(201,152,58,0.5);
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.18s cubic-bezier(0.16,1,0.3,1),
                width 0.3s, height 0.3s, opacity 0.3s;
  }

  .custom-cursor--hover {
    width: 14px; height: 14px;
    background: var(--crimson-light);
  }

  .custom-cursor-ring--hover {
    width: 48px; height: 48px;
    border-color: rgba(196,68,58,0.4);
  }

  a:hover ~ .custom-cursor,
  button:hover ~ .custom-cursor { width: 14px; height: 14px; }
}

/* ─── SELECTION ─── */
::selection {
  background: rgba(139,26,26,0.45);
  color: var(--gold-light);
}

/* ─── FOCUS VISIBLE ─── */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ─── LOADING SHIMMER on images ─── */
@keyframes skeleton-shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}