/* ============================================================
   THE ATHLETE'S FOOT — Animations CSS
   Scroll animations, keyframes, transitions, parallax
   ============================================================ */

/* ── Keyframes ─────────────────────────────────────────────── */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(-50px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(50px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.88); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-12px) rotate(1deg); }
  66%       { transform: translateY(-6px) rotate(-1deg); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-20px); }
}

@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212,43,43,0); }
  50%       { box-shadow: 0 0 0 12px rgba(212,43,43,0.15); }
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.4); opacity: 0.6; }
}

@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}

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

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

@keyframes rotateIn {
  from { opacity: 0; transform: rotate(-8deg) scale(0.9); }
  to   { opacity: 1; transform: rotate(0deg) scale(1); }
}

@keyframes counterUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes borderPulse {
  0%, 100% { border-color: rgba(212,43,43,0.3); }
  50%       { border-color: rgba(212,43,43,0.8); }
}

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

@keyframes heroTextReveal {
  from { clip-path: inset(0 100% 0 0); }
  to   { clip-path: inset(0 0% 0 0); }
}

/* ── Scroll-triggered Base State ───────────────────────────── */

.anim-fade-up,
.anim-fade-left,
.anim-fade-right,
.anim-fade-in,
.anim-scale-in,
.anim-stagger > * {
  opacity: 0;
  transition: opacity var(--t-slower), transform var(--t-slower);
}

.anim-fade-up      { transform: translateY(40px); }
.anim-fade-left    { transform: translateX(-50px); }
.anim-fade-right   { transform: translateX(50px); }
.anim-fade-in      { transform: none; }
.anim-scale-in     { transform: scale(0.88); }

.anim-stagger > * {
  transform: translateY(30px);
}

/* Revealed state (added by JS IntersectionObserver) */
.anim-fade-up.revealed,
.anim-fade-left.revealed,
.anim-fade-right.revealed,
.anim-fade-in.revealed,
.anim-scale-in.revealed {
  opacity: 1;
  transform: none;
}

.anim-stagger.revealed > *:nth-child(1) { opacity: 1; transform: none; transition-delay: 0ms; }
.anim-stagger.revealed > *:nth-child(2) { opacity: 1; transform: none; transition-delay: 80ms; }
.anim-stagger.revealed > *:nth-child(3) { opacity: 1; transform: none; transition-delay: 160ms; }
.anim-stagger.revealed > *:nth-child(4) { opacity: 1; transform: none; transition-delay: 240ms; }
.anim-stagger.revealed > *:nth-child(5) { opacity: 1; transform: none; transition-delay: 320ms; }
.anim-stagger.revealed > *:nth-child(6) { opacity: 1; transform: none; transition-delay: 400ms; }
.anim-stagger.revealed > *:nth-child(7) { opacity: 1; transform: none; transition-delay: 480ms; }
.anim-stagger.revealed > *:nth-child(8) { opacity: 1; transform: none; transition-delay: 560ms; }
.anim-stagger.revealed > *:nth-child(9) { opacity: 1; transform: none; transition-delay: 640ms; }
.anim-stagger.revealed > *:nth-child(10){ opacity: 1; transform: none; transition-delay: 720ms; }
.anim-stagger.revealed > *:nth-child(11){ opacity: 1; transform: none; transition-delay: 800ms; }
.anim-stagger.revealed > *:nth-child(12){ opacity: 1; transform: none; transition-delay: 880ms; }

/* ── Hero Entrance ─────────────────────────────────────────── */

.hero-title-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-title-char.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── Floating Elements ─────────────────────────────────────── */

.float-slow  { animation: floatSlow 6s ease-in-out infinite; }
.float-fast  { animation: float 4s ease-in-out infinite; }
.float-delay { animation: floatSlow 6s ease-in-out infinite 2s; }

/* ── Marquee (Brand Strip) ─────────────────────────────────── */

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-track:hover { animation-play-state: paused; }

.marquee-track-reverse {
  animation: marquee-reverse 28s linear infinite;
}

/* ── Shimmer Loading ───────────────────────────────────────── */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface) 25%,
    var(--surface-3) 50%,
    var(--surface) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--r-md);
}

/* ── Gradient Background Animation ────────────────────────── */

.gradient-animate {
  background-size: 200% 200%;
  animation: gradientShift 6s ease infinite;
}

/* ── Number Counter ────────────────────────────────────────── */

.stat-number {
  animation: counterUp 600ms ease forwards;
}

/* ── Loading Spinner ───────────────────────────────────────── */

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.15);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 600ms linear infinite;
  display: inline-block;
}

/* ── Parallax Container ────────────────────────────────────── */

.parallax-container {
  overflow: hidden;
  position: relative;
}

.parallax-bg {
  position: absolute;
  inset: -20%;
  background-size: cover;
  background-position: center;
  will-change: transform;
}

/* ── Tilt Card ─────────────────────────────────────────────── */

.tilt-card {
  transform-style: preserve-3d;
  transform: perspective(1000px);
  transition: transform 100ms ease;
  will-change: transform;
}

.tilt-card .tilt-inner {
  transform: translateZ(20px);
  transition: transform 100ms ease;
}

/* ── Hover Lift ────────────────────────────────────────────── */

.hover-lift {
  transition: transform var(--t-slow), box-shadow var(--t-slow);
  cursor: pointer;
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

/* ── Image Zoom ────────────────────────────────────────────── */

.img-zoom {
  overflow: hidden;
}

.img-zoom img {
  transition: transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.img-zoom:hover img {
  transform: scale(1.08);
}

/* ── Underline Hover ───────────────────────────────────────── */

.underline-hover {
  position: relative;
}

.underline-hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width var(--t-slow);
}

.underline-hover:hover::after {
  width: 100%;
}

/* ── Glow Effect ───────────────────────────────────────────── */

.glow-red {
  transition: box-shadow var(--t-slow);
}

.glow-red:hover {
  box-shadow: var(--shadow-red);
}

/* ── Dot Pulse ─────────────────────────────────────────────── */

.dot-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--red);
  animation: pulse-dot 1.5s ease-in-out infinite;
}

/* ── Page Transition ───────────────────────────────────────── */

.page-enter {
  animation: fadeUp 500ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ── Scroll Progress Bar ───────────────────────────────────── */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--red-light));
  transform-origin: left;
  transform: scaleX(0);
  z-index: calc(var(--z-toast) + 1);
  transition: transform 100ms linear;
  box-shadow: 0 0 10px var(--red-glow);
}