/* ============================================================
   MATRIKA STUDIOS — ANIMATIONS CSS
   Keyframes, transition definitions, reveal states
   ============================================================ */

/* ── GRAIN SHIFT ───────────────────────────────────────────── */
@keyframes grain-shift {
  0%   { transform: translate(0, 0); }
  10%  { transform: translate(-2%, -3%); }
  20%  { transform: translate(-4%, 1%); }
  30%  { transform: translate(3%, -2%); }
  40%  { transform: translate(-1%, 4%); }
  50%  { transform: translate(2%, -1%); }
  60%  { transform: translate(-3%, 2%); }
  70%  { transform: translate(1%, -4%); }
  80%  { transform: translate(-2%, 3%); }
  90%  { transform: translate(4%, -1%); }
  100% { transform: translate(0, 0); }
}

/* ── FADE IN ───────────────────────────────────────────────── */
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-down {
  from { opacity: 0; transform: translateY(-24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── LEGACY INTRO (kept for fallback) ─────────────────────── */
@keyframes intro-symbol-appear {
  0%   { opacity: 0; transform: scale(0.85); filter: blur(8px); }
  100% { opacity: 1; transform: scale(1);    filter: blur(0); }
}

/* ── MINIMAL INTRO: LOGO REVEAL ───────────────────────────── */
/* Smooth fade-in with a very subtle scale settle */
@keyframes logo-reveal {
  0%   { opacity: 0; transform: scale(1.04); }
  100% { opacity: 1; transform: scale(1); }
}

/* ── INTRO: EXIT SPLIT ──────────────────────────────────────── */
/* Top and bottom panels slide away — screen splits open */
@keyframes exit-panel-up {
  0%   { transform: translateY(0); }
  100% { transform: translateY(-100%); }
}

@keyframes exit-panel-down {
  0%   { transform: translateY(0); }
  100% { transform: translateY(100%); }
}

/* ── CURSOR ────────────────────────────────────────────────── */
@keyframes cursor-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.15); opacity: 0.7; }
}

/* ── MENU STAGGER ──────────────────────────────────────────── */
@keyframes menu-item-in {
  0%   { opacity: 0; transform: translateY(30px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ── PAGE TRANSITION CURTAIN ───────────────────────────────── */
@keyframes curtain-in {
  0%   { transform: scaleY(0); transform-origin: bottom; }
  100% { transform: scaleY(1); transform-origin: bottom; }
}

@keyframes curtain-out {
  0%   { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: top; }
}

/* ── IMAGE CROSSFADE ───────────────────────────────────────── */
@keyframes slide-crossfade-in {
  0%   { opacity: 0; transform: scale(1.06); }
  100% { opacity: 1; transform: scale(1); }
}

/* ── REVEAL CLASSES (scroll-triggered) ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.35s; }
.reveal-delay-4 { transition-delay: 0.5s; }

.reveal-clip {
  overflow: hidden;
}

.reveal-clip .reveal-inner {
  transform: translateY(105%);
  transition: transform 0.9s var(--ease-out);
}

.reveal-clip.is-visible .reveal-inner {
  transform: translateY(0);
}