/* ================================================================
   TENSEN AI — Animation System
   Staggered reveals, transitions, morphs, masks
   Primary elements: bigger motion, earlier timing
   Secondary elements: smaller motion, delayed
   ================================================================ */

/* ===== SCROLL REVEAL BASE ===== */

/* Primary elements — big motion, moves first */
.reveal-primary {
  opacity: 0;
  transform: translateY(80px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

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

/* Secondary elements — smaller motion, delayed */
.reveal-secondary {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  transition-delay: 0.15s;
}

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

/* Tertiary — subtle motion, most delayed */
.reveal-tertiary {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
  transition-delay: 0.3s;
}

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

/* Stagger delays for lists */
.stagger-1 { transition-delay: 0.05s !important; }
.stagger-2 { transition-delay: 0.12s !important; }
.stagger-3 { transition-delay: 0.19s !important; }
.stagger-4 { transition-delay: 0.26s !important; }
.stagger-5 { transition-delay: 0.33s !important; }
.stagger-6 { transition-delay: 0.40s !important; }

/* ===== SWIPE TRANSITION ===== */
.swipe-in-left {
  opacity: 0;
  transform: translateX(-100px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.swipe-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.swipe-in-right {
  opacity: 0;
  transform: translateX(100px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.swipe-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ===== MASK REVEAL (circle expanding) ===== */
.mask-reveal {
  clip-path: circle(0% at 50% 50%);
  transition: clip-path 1.2s var(--ease-out);
}

.mask-reveal.visible {
  clip-path: circle(100% at 50% 50%);
}

/* Mask from corner */
.mask-reveal-corner {
  clip-path: circle(0% at 0% 0%);
  transition: clip-path 1.4s var(--ease-out);
}

.mask-reveal-corner.visible {
  clip-path: circle(150% at 0% 0%);
}

/* ===== SCALE REVEAL ===== */
.scale-in {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-spring);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* ===== FLOATING ANIMATION ===== */
.float {
  animation: float-gentle 6s ease-in-out infinite;
}

.float-delay-1 { animation-delay: -2s; }
.float-delay-2 { animation-delay: -4s; }

@keyframes float-gentle {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* ===== PULSE ===== */
.pulse-glow {
  animation: pulse-g 3s ease-in-out infinite;
}

@keyframes pulse-g {
  0%, 100% { box-shadow: 0 0 20px var(--violet-glow); }
  50% { box-shadow: 0 0 50px var(--violet-glow), 0 0 80px rgba(124,58,237,0.15); }
}

/* ===== ROTATE GRADIENT BORDER ===== */
@property --border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.gradient-border {
  position: relative;
}

.gradient-border::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1.5px;
  background: conic-gradient(
    from var(--border-angle),
    transparent 30%,
    var(--violet) 48%,
    var(--cyan) 52%,
    transparent 70%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: spin-border 5s linear infinite;
  pointer-events: none;
}

@keyframes spin-border {
  to { --border-angle: 360deg; }
}

/* ===== TEXT SHIMMER ===== */
.text-shimmer {
  background: linear-gradient(
    110deg,
    var(--text) 35%,
    var(--violet-light) 50%,
    var(--text) 65%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== INTRO OVERLAY ===== */
#intro-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 1s var(--ease-out);
}

#intro-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

#intro-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ===== CARD HOVER GLOW (mouse track) ===== */
.hover-glow {
  position: relative;
  overflow: hidden;
}

.hover-glow::before {
  content: '';
  position: absolute;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(124,58,237,0.12), transparent 70%);
  transform: translate(var(--mx, -400px), var(--my, -400px));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s;
}

.hover-glow:hover::before {
  opacity: 1;
}

/* ===== SECTION TRANSITIONS ===== */
.section-transition {
  position: relative;
  padding: 140px 0;
  /* NO overflow:hidden — it was clipping the blend fades */
}

/* No hard line between sections — blend handled by .section-blend pseudo-elements */
.section-transition::before { display: none; }

/* ===== NATURE/SPACE IMAGE OVERLAY ===== */
.bg-image-overlay {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.bg-image-overlay img,
.bg-image-overlay video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  filter: brightness(0.4) saturate(0.7);
}

.bg-image-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    var(--bg) 0%,
    rgba(8,8,15,0.4) 30%,
    rgba(8,8,15,0.4) 70%,
    var(--bg) 100%
  );
}