/* ==========================================================================
   TSG AI - Animations & Transitions
   ========================================================================== */

/* ---------- Page Loader ---------- */

.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  background: var(--tsg-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: transform 0.8s var(--ease-out-expo);
}

.loader--exit {
  transform: translateY(-100%);
}

.loader__logo {
  width: 200px;
  opacity: 0;
  animation: loader-logo-in 0.6s var(--ease-out-expo) 0.2s forwards;
}

.loader__bar {
  width: 120px;
  height: 3px;
  background: var(--tsg-gray-200);
  margin-top: var(--space-6);
  border-radius: var(--radius-full);
  overflow: hidden;
  opacity: 0;
  animation: loader-logo-in 0.4s ease 0.5s forwards;
}

.loader__bar-fill {
  width: 100%;
  height: 100%;
  background: var(--gradient-teal);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transform-origin: left;
  animation: loader-fill 1.5s var(--ease-out-expo) 0.6s forwards;
}

@keyframes loader-logo-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes loader-fill {
  to { transform: scaleX(1); }
}

body.no-loader .loader {
  display: none;
}

/* ---------- Scroll Reveal System ---------- */

[data-reveal] {
  opacity: 0;
  transition: opacity var(--duration-reveal) var(--ease-out-expo),
              transform var(--duration-reveal) var(--ease-out-expo);
  will-change: opacity, transform;
}

[data-reveal="fade-up"] {
  transform: translateY(40px);
}

[data-reveal="fade-down"] {
  transform: translateY(-40px);
}

[data-reveal="fade-left"] {
  transform: translateX(-40px);
}

[data-reveal="fade-right"] {
  transform: translateX(40px);
}

[data-reveal="fade-scale"] {
  transform: scale(0.92);
}

[data-reveal="fade"] {
  transform: none;
}

/* Revealed state */
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger delays via data-reveal-delay */
[data-reveal-delay="100"] { transition-delay: 100ms; }
[data-reveal-delay="200"] { transition-delay: 200ms; }
[data-reveal-delay="300"] { transition-delay: 300ms; }
[data-reveal-delay="400"] { transition-delay: 400ms; }
[data-reveal-delay="500"] { transition-delay: 500ms; }
[data-reveal-delay="600"] { transition-delay: 600ms; }
[data-reveal-delay="800"] { transition-delay: 800ms; }

/* ---------- Hero Entry Animation ---------- */

.hero__eyebrow,
.hero__heading,
.hero__subheading,
.hero__ctas,
.hero__visual {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-reveal) var(--ease-out-expo),
              transform var(--duration-reveal) var(--ease-out-expo);
}

.hero--loaded .hero__eyebrow     { opacity: 1; transform: translateY(0); transition-delay: 0ms; }
.hero--loaded .hero__heading     { opacity: 1; transform: translateY(0); transition-delay: 150ms; }
.hero--loaded .hero__subheading  { opacity: 1; transform: translateY(0); transition-delay: 300ms; }
.hero--loaded .hero__ctas        { opacity: 1; transform: translateY(0); transition-delay: 450ms; }

.hero__visual {
  transform: scale(0.9);
}

.hero--loaded .hero__visual {
  opacity: 1;
  transform: scale(1);
  transition-delay: 200ms;
}

/* ---------- Framework Timeline Line Draw ---------- */

.framework__line-path {
  stroke-dasharray: 2000;
  stroke-dashoffset: 2000;
  transition: stroke-dashoffset 2s var(--ease-out-expo);
}

.framework--visible .framework__line-path {
  stroke-dashoffset: 0;
}

.framework__stage {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out-expo),
              transform 0.5s var(--ease-out-expo);
}

.framework--visible .framework__stage:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.2s; }
.framework--visible .framework__stage:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.5s; }
.framework--visible .framework__stage:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.8s; }
.framework--visible .framework__stage:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 1.1s; }
.framework--visible .framework__stage:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 1.4s; }

/* ---------- Logo Carousel ---------- */

.logo-carousel__track {
  display: flex;
  gap: var(--space-12);
  animation: logo-scroll 40s linear infinite;
  width: max-content;
}

.logo-carousel__track:hover {
  animation-play-state: paused;
}

@keyframes logo-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- Counter Pulse ---------- */

@keyframes counter-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.stat-card__number.counting {
  animation: counter-pulse 0.3s var(--ease-out-expo);
}

/* ---------- Form Step Transitions ---------- */

.form-step {
  display: none;
  animation: step-in 0.4s var(--ease-out-expo);
}

.form-step.active {
  display: block;
}

@keyframes step-in {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ---------- Success Check Animation ---------- */

.success-check {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
}

.success-check__circle {
  stroke-dasharray: 260;
  stroke-dashoffset: 260;
  animation: check-circle 0.6s var(--ease-out-expo) forwards;
}

.success-check__check {
  stroke-dasharray: 50;
  stroke-dashoffset: 50;
  animation: check-draw 0.4s var(--ease-out-expo) 0.4s forwards;
}

@keyframes check-circle {
  to { stroke-dashoffset: 0; }
}

@keyframes check-draw {
  to { stroke-dashoffset: 0; }
}

/* ---------- Floating animation for hero graphic ---------- */

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__visual svg {
  animation: float 6s ease-in-out infinite;
}

/* ---------- Reduced Motion ---------- */

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

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .loader {
    display: none !important;
  }

  .logo-carousel__track {
    animation: none;
  }

  .hero__eyebrow,
  .hero__heading,
  .hero__subheading,
  .hero__ctas,
  .hero__visual {
    opacity: 1 !important;
    transform: none !important;
  }

  .framework__line-path {
    stroke-dashoffset: 0 !important;
  }

  .framework__stage {
    opacity: 1 !important;
    transform: none !important;
  }
}