/* ============================================================
   animations.css — mineralslanka.com
   Scroll reveals, transitions, keyframes, page transitions
   Max Minerals Pvt. Ltd. | IAMUVIN
   ============================================================ */


/* === VIEW TRANSITIONS API (MPA cross-page fades) === */

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: vt-fade-out 220ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

::view-transition-new(root) {
  animation: vt-fade-in 280ms cubic-bezier(0.16, 1, 0.3, 1) 80ms both;
}

@keyframes vt-fade-out {
  from { opacity: 1; transform: scale(1); }
  to   { opacity: 0; transform: scale(0.98); }
}

@keyframes vt-fade-in {
  from { opacity: 0; transform: scale(1.01); }
  to   { opacity: 1; transform: scale(1); }
}

/* Reduced motion: instant swap, no animation */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }
}


/* === PAGE LOADER === */

.page-loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.25rem;
  background: var(--bg-page, #F5F8FC);
  transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0ms 400ms;
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.page-loader-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary, #1A5276);
  letter-spacing: -0.02em;
  animation: loader-pulse 1.4s ease-in-out infinite;
  user-select: none;
}

.page-loader-logo span {
  color: var(--color-accent, #1ABC9C);
}

.page-loader-bar {
  width: 120px;
  height: 2px;
  background: var(--border-default, #D8E8F4);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
}

.page-loader-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 40%;
  background: linear-gradient(90deg, var(--color-primary, #1A5276), var(--color-accent, #1ABC9C));
  border-radius: 2px;
  animation: loader-slide 1s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes loader-pulse {
  0%, 100% { opacity: 0.5; transform: scale(0.97); }
  50%      { opacity: 1;   transform: scale(1); }
}

@keyframes loader-slide {
  0%   { left: -40%; }
  100% { left: 100%; }
}

/* Reduced motion: static loader */
@media (prefers-reduced-motion: reduce) {
  .page-loader-logo {
    animation: none;
    opacity: 1;
  }

  .page-loader-bar::after {
    animation: none;
    width: 100%;
    left: 0;
  }
}


/* === JS FALLBACK PAGE TRANSITION (browsers without View Transitions API) === */

.page-leaving {
  animation: vt-fade-out 200ms cubic-bezier(0.16, 1, 0.3, 1) both;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-leaving {
    animation: none;
  }
}


/* === SCROLL REVEAL — Base States === */

.reveal,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

.reveal       { transform: translateY(40px); }
.reveal-left  { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-scale { transform: scale(0.94); }

/* === SCROLL REVEAL — Visible States === */

.reveal.is-visible,
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible {
  opacity: 1;
  transform: none;
}

/* === STAGGER CHILDREN === */

.stagger-children > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.stagger-children.is-visible > *:nth-child(1)  { opacity: 1; transform: none; transition-delay: 0ms; }
.stagger-children.is-visible > *:nth-child(2)  { opacity: 1; transform: none; transition-delay: 80ms; }
.stagger-children.is-visible > *:nth-child(3)  { opacity: 1; transform: none; transition-delay: 160ms; }
.stagger-children.is-visible > *:nth-child(4)  { opacity: 1; transform: none; transition-delay: 240ms; }
.stagger-children.is-visible > *:nth-child(5)  { opacity: 1; transform: none; transition-delay: 320ms; }
.stagger-children.is-visible > *:nth-child(6)  { opacity: 1; transform: none; transition-delay: 400ms; }
.stagger-children.is-visible > *:nth-child(7)  { opacity: 1; transform: none; transition-delay: 480ms; }
.stagger-children.is-visible > *:nth-child(8)  { opacity: 1; transform: none; transition-delay: 560ms; }
.stagger-children.is-visible > *:nth-child(n+9) { opacity: 1; transform: none; transition-delay: 600ms; }

/* === NAV COMPACT (shrinks on scroll via GSAP) === */

.nav-compact .nav-inner {
  height: 64px;
  transition: height 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-compact .nav-logo-text {
  font-size: 1.25rem;
  transition: font-size 300ms ease;
}

.nav-compact .nav-accent-bar {
  height: 2px;
  transition: height 300ms ease;
}

/* === EYEBROW LINE DRAW === */

.eyebrow-animated::before {
  width: 0;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
}

.eyebrow-visible::before {
  width: 24px;
}

/* === HERO WORD 3D PERSPECTIVE === */

.hero-title {
  perspective: 800px;
}

.hero-title .word {
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

/* === SMOOTH SECTION DIVIDERS === */

.section + .section {
  position: relative;
}

/* === FLOATING CARD HOVER DEPTH === */

.hero-float-card {
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero:hover .hfc-purity {
  transform: translate(4px, -4px);
}

.hero:hover .hfc-capacity {
  transform: translate(-4px, 4px);
}

/* === STAT NUMBER TABULAR SHIMMER === */

.stat-number {
  position: relative;
  overflow: hidden;
}

.stat-number::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(26, 188, 156, 0.08), transparent);
  pointer-events: none;
}

.stat-item:hover .stat-number::after {
  left: 150%;
  transition: left 800ms ease;
}

/* === KEYFRAMES — Page Enter === */

@keyframes page-enter {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main {
  animation: page-enter 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* === KEYFRAMES — Gradient Shift (Nav Accent Bar) === */

@keyframes gradient-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.nav-accent-bar {
  background-size: 200% 100%;
  animation: gradient-shift 6s ease infinite;
}

/* === KEYFRAMES — Text Shimmer === */

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

.text-shimmer {
  background: linear-gradient(90deg,
    var(--text-primary) 0%,
    var(--color-primary) 30%,
    var(--color-accent) 50%,
    var(--color-primary) 70%,
    var(--text-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: text-shimmer 4s linear infinite;
}

/* === PREMIUM MICRO-INTERACTIONS === */

/* --- Button Press Effect --- */
.btn-primary,
.btn-accent,
.btn-on-dark,
.btn-secondary {
  transition: transform 150ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 200ms ease,
              background 200ms ease,
              border-color 200ms ease,
              color 200ms ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 82, 118, 0.3);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 8px rgba(26, 82, 118, 0.2);
  transition-duration: 80ms;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 188, 156, 0.3);
}

.btn-accent:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 8px rgba(26, 188, 156, 0.2);
  transition-duration: 80ms;
}

.btn-on-dark:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
}

.btn-on-dark:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
  transition-duration: 80ms;
}

.btn-secondary:hover {
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 80ms;
}

/* --- Text Link Arrow Slide --- */
.btn-text {
  transition: gap 200ms cubic-bezier(0.16, 1, 0.3, 1),
              color 180ms ease;
}

.btn-text span {
  display: inline-block;
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-text:hover span {
  transform: translateX(4px);
}

/* --- Card Hover: Lift + Glow + Border Shimmer --- */
.card {
  will-change: transform, box-shadow;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 350ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 350ms ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow:
    0 12px 40px rgba(26, 82, 118, 0.12),
    0 4px 12px rgba(26, 82, 118, 0.06);
  border-color: var(--border-medium);
}

.card-image img {
  will-change: transform;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

/* --- Industry Cell Hover: Accent Border + Lift --- */
.industry-cell {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 300ms ease,
              border-color 300ms ease;
}

.industry-cell:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(26, 82, 118, 0.08);
  border-color: var(--color-accent);
}

.industry-cell:hover .industry-icon svg {
  stroke: var(--color-accent);
  transition: stroke 250ms ease;
}

/* --- Stat Item Hover: Glow Border + Scale --- */
.stat-item {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 300ms ease,
              background 300ms ease,
              box-shadow 300ms ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(26, 188, 156, 0.4);
  box-shadow: 0 8px 32px rgba(26, 188, 156, 0.1);
}

/* --- Data Card Row Highlight --- */
.data-card-row {
  transition: background 200ms ease;
}

.data-card-row:hover {
  background: var(--color-primary-50);
}

.data-card-row--hero:hover {
  background: rgba(26, 82, 118, 0.08);
}

/* --- Team Card Hover --- */
.team-card {
  will-change: transform;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 350ms ease;
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(26, 82, 118, 0.12);
}

.team-photo img {
  will-change: transform;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.team-card:hover .team-photo img {
  transform: scale(1.05);
}

/* --- USP Item Hover --- */
.usp-item {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 300ms ease,
              box-shadow 300ms ease;
}

.usp-item:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  box-shadow: 0 8px 24px rgba(26, 82, 118, 0.08);
}

/* --- Reserve Card Hover --- */
.reserve-card {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 300ms ease,
              box-shadow 300ms ease;
}

.reserve-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(26, 82, 118, 0.1);
}

/* --- Location Card Hover --- */
.location-card {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 300ms ease,
              box-shadow 300ms ease;
}

.location-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  box-shadow: 0 6px 20px rgba(26, 82, 118, 0.08);
}

/* --- Pack Card Hover --- */
.pack-card {
  will-change: transform;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 300ms ease,
              box-shadow 300ms ease;
}

.pack-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-medium);
  box-shadow: 0 6px 20px rgba(26, 82, 118, 0.08);
}

/* --- FAQ Chevron Bounce on Hover --- */
.faq-question:hover .faq-chevron {
  animation: chevron-bounce 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes chevron-bounce {
  0%   { transform: translateY(0); }
  40%  { transform: translateY(3px); }
  100% { transform: translateY(0); }
}

.faq-item.is-open .faq-question:hover .faq-chevron {
  animation: none;
}

/* --- Nav Link Underline Grow --- */
.nav-link::after {
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Footer Link Underline on Hover --- */
.footer-nav li a {
  position: relative;
}

.footer-nav li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

.footer-nav li a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* --- Quality Image Zoom on Hover --- */
.quality-image {
  overflow: hidden;
}

.quality-image img {
  will-change: transform;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.quality-image:hover img {
  transform: scale(1.04);
}

/* --- Stage Image Zoom --- */
.stage-image img {
  will-change: transform;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.stage-image:hover img {
  transform: scale(1.03);
}

/* --- Product Image Zoom --- */
.product-image img {
  will-change: transform;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.product-image:hover img {
  transform: scale(1.04);
}

/* --- Export Map Dot Pulse --- */
@keyframes dot-pulse {
  0%, 100% { r: 5; opacity: 1; }
  50%      { r: 7; opacity: 0.7; }
}

.export-map-svg circle[fill="var(--color-primary)"] {
  animation: dot-pulse 3s ease-in-out infinite;
}

.export-map-svg circle[fill="var(--color-accent)"] {
  animation: dot-pulse 2.5s ease-in-out infinite;
}

/* --- Scroll Progress Bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: var(--z-progress);
  width: 0%;
  transition: width 50ms linear;
  pointer-events: none;
}

/* --- Focus Ring Enhancement --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.btn:focus-visible {
  box-shadow: 0 0 0 4px rgba(26, 82, 118, 0.2);
}

/* --- Hero Accent Pulse (subtle glow on accent text) --- */
@keyframes accent-glow {
  0%, 100% { text-shadow: 0 0 0 transparent; }
  50%      { text-shadow: 0 0 20px rgba(26, 188, 156, 0.2); }
}

.hero-accent {
  animation: accent-glow 4s ease-in-out infinite;
}

/* --- Cert Badge Shine --- */
.footer-cert-badge,
.card-badge {
  position: relative;
  overflow: hidden;
}

.footer-cert-badge::before,
.card-badge::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0ms;
}

.footer-cert-badge:hover::before,
.card-badge:hover::before {
  left: 120%;
  transition: left 600ms ease;
}

/* --- Disable hover effects on touch devices --- */
@media (pointer: coarse) {
  .card:hover,
  .industry-cell:hover,
  .stat-item:hover,
  .team-card:hover,
  .usp-item:hover,
  .reserve-card:hover,
  .location-card:hover,
  .pack-card:hover {
    transform: none;
  }

  .hero-accent {
    animation: none;
  }

  .faq-question:hover .faq-chevron {
    animation: none;
  }
}


/* === REDUCED MOTION === */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .stagger-children > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  main {
    animation: none;
  }

  .nav-accent-bar {
    animation: none;
  }

  .text-shimmer {
    animation: none;
    -webkit-text-fill-color: var(--text-primary);
    background: none;
  }

  .hero-accent {
    animation: none;
    text-shadow: none;
  }

  .export-map-svg circle {
    animation: none;
  }

  .card:hover,
  .industry-cell:hover,
  .stat-item:hover,
  .team-card:hover,
  .usp-item:hover,
  .reserve-card:hover,
  .location-card:hover,
  .pack-card:hover {
    transform: none;
  }

  .btn-primary:hover,
  .btn-accent:hover,
  .btn-on-dark:hover,
  .btn-secondary:hover {
    transform: none;
  }

  .card:hover .card-image img,
  .team-card:hover .team-photo img,
  .quality-image:hover img,
  .stage-image:hover img,
  .product-image:hover img {
    transform: none;
  }

  .scroll-progress {
    display: none;
  }
}