/* ================================================
   PREMIUM EFFECTS
   Custom Cursor, Glassmorphism, 3D Tilt,
   Gradient Borders, Loading Screen, Progress Bar
   ================================================ */

/* ---------- Loading Screen ---------- */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-logo {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text);
  opacity: 0;
  animation: loadingFadeIn 0.8s ease forwards;
}

.loading-logo .accent {
  color: var(--accent);
}

.loading-bar-track {
  width: 200px;
  height: 3px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  opacity: 0;
  animation: loadingFadeIn 0.8s ease 0.3s forwards;
}

.loading-bar-fill {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes loadingFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Scroll Progress Bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  z-index: 100;
  transition: width 0.1s linear;
  box-shadow: 0 0 10px var(--accent-glow-strong);
}

/* ---------- Waving Hand ---------- */
.hero-greeting-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hero-wave {
  display: inline-block;
  font-size: 1.7rem;
  line-height: 1;
  transform-origin: 70% 70%;
  animation: heroWave 2.2s ease-in-out infinite;
}

@keyframes heroWave {
  0%, 60%, 100% { transform: rotate(0deg) translateZ(0); }
  10% { transform: rotate(18deg) translateZ(0); }
  20% { transform: rotate(-12deg); }
  30% { transform: rotate(16deg); }
  40% { transform: rotate(-6deg); }
  50% { transform: rotate(10deg); }
}

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

/* ---------- Hero Avatar ---------- */
.hero-avatar {
  position: relative;
  flex-shrink: 0;
  width: clamp(200px, 22vw, 300px);
  height: clamp(270px, 31vw, 420px);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  transform-style: preserve-3d;
  perspective: 1000px;
  animation: avatarFloat 4.5s ease-in-out infinite;
  cursor: pointer;
}

.hero-avatar:hover {
  animation-play-state: paused;
}

/* Breathing glow behind the person */
.hero-avatar::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 120%;
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(circle, rgba(34, 211, 238, 0.35), rgba(6, 182, 212, 0.12) 40%, transparent 70%);
  filter: blur(70px);
  animation: avatarGlow 5s ease-in-out infinite;
  z-index: 0;
  pointer-events: none;
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-avatar.glow-boost::before {
  opacity: 1;
  filter: blur(55px);
}

@keyframes avatarGlow {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(0.9); }
  50%      { opacity: 0.85; transform: translate(-50%, -50%) scale(1.12); }
}

/* The person cutout — transparent, no card styling */
.avatar-img {
  position: relative;
  z-index: 1;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  animation: avatarIntro 1s cubic-bezier(0.16, 1, 0.3, 1) both;
  transform-style: preserve-3d;
  will-change: transform, filter;
  transition: transform 0.18s cubic-bezier(0.2, 0.8, 0.2, 1), filter 0.2s ease;
  filter: drop-shadow(0 15px 35px rgba(0, 0, 0, 0.55));
}

/* Entrance: fade-in + scale-up + slide-up, decelerating */
@keyframes avatarIntro {
  0%   { opacity: 0; transform: translateY(30px) scale(0.9); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

/* Gentle floating with a slight rotation */
@keyframes avatarFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-10px) rotate(1.5deg); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-avatar { animation: none; }
  .hero-avatar::before { animation: none; }
  .avatar-img { animation: none; transition: none; }
}

@media (max-width: 768px) {
  .hero-avatar { display: none; }
}

/* ---------- Bulle Flottante & Main qui Salue au Survol ---------- */
.hero-greeting-tooltip {
  position: absolute;
  top: 12%;
  left: -28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: color-mix(in srgb, var(--surface) 86%, var(--accent) 14%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid var(--accent);
  padding: 0.45rem 0.95rem;
  border-radius: 20px;
  box-shadow: 
    0 12px 30px rgba(0, 0, 0, 0.5),
    0 0 18px rgba(34, 211, 238, 0.35);
  z-index: 10;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.6) translateY(14px) rotate(-8deg);
  transform-origin: bottom right;
  transition: opacity 0.3s cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.hero-greeting-tooltip::after {
  content: "";
  position: absolute;
  bottom: -6px;
  right: 22px;
  width: 10px;
  height: 10px;
  background: color-mix(in srgb, var(--surface) 86%, var(--accent) 14%);
  border-right: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(45deg);
}

.hero-avatar:hover .hero-greeting-tooltip {
  opacity: 1;
  transform: scale(1) translateY(0) rotate(0deg);
}

.hero-greeting-hand {
  font-size: 1.35rem;
  display: inline-block;
  transform-origin: 70% 70%;
  animation: heroHandWave 1.4s infinite ease-in-out;
}

.hero-greeting-msg {
  font-size: 0.92rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

@keyframes heroHandWave {
  0%, 100% { transform: rotate(0deg); }
  20%, 60% { transform: rotate(24deg); }
  40%, 80% { transform: rotate(-14deg); }
}

[dir="rtl"] .hero-greeting-tooltip {
  left: auto;
  right: -28px;
  transform-origin: bottom left;
}

[dir="rtl"] .hero-greeting-tooltip::after {
  right: auto;
  left: 22px;
  border-right: none;
  border-left: 1.5px solid var(--accent);
}

/* ---------- Glassmorphism ---------- */
.glass {
  background: rgba(21, 27, 46, 0.6) !important;
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border: 1px solid rgba(34, 211, 238, 0.08) !important;
}

[data-theme="light"] .glass {
  background: rgba(255, 255, 255, 0.65) !important;
  border: 1px solid rgba(0, 0, 0, 0.06) !important;
}

/* ---------- 3D Tilt ---------- */
.tilt-card {
  transform-style: preserve-3d;
  perspective: 1000px;
  will-change: transform, filter;
}

.tilt-card-inner {
  transition: transform 0.15s ease-out;
  transform-style: preserve-3d;
}

.tilt-card .tilt-shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(34, 211, 238, 0.12),
    transparent 40%
  );
  z-index: 1;
}

.tilt-card:hover .tilt-shine {
  opacity: 1;
}

/* ---------- Animated Gradient Borders ---------- */
.gradient-border {
  position: relative;
  overflow: visible;
}

.gradient-border::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius) + 2px);
  background: linear-gradient(
    var(--gradient-angle, 0deg),
    var(--accent),
    transparent 40%,
    transparent 60%,
    var(--accent-strong)
  );
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s ease;
  animation: gradientRotate 4s linear infinite;
}

.gradient-border:hover::before {
  opacity: 1;
}

@keyframes gradientRotate {
  0% { --gradient-angle: 0deg; }
  100% { --gradient-angle: 360deg; }
}

@property --gradient-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0deg;
}

/* ---------- Stagger Reveal ---------- */
.stagger-reveal > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-reveal.revealed > * {
  opacity: 1;
  transform: none;
}

.stagger-reveal.revealed > *:nth-child(1) { transition-delay: 0s; }
.stagger-reveal.revealed > *:nth-child(2) { transition-delay: 0.08s; }
.stagger-reveal.revealed > *:nth-child(3) { transition-delay: 0.16s; }
.stagger-reveal.revealed > *:nth-child(4) { transition-delay: 0.24s; }
.stagger-reveal.revealed > *:nth-child(5) { transition-delay: 0.32s; }
.stagger-reveal.revealed > *:nth-child(6) { transition-delay: 0.4s; }
.stagger-reveal.revealed > *:nth-child(7) { transition-delay: 0.48s; }
.stagger-reveal.revealed > *:nth-child(8) { transition-delay: 0.56s; }

/* ---------- Floating Back-to-Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 40;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  box-shadow: var(--shadow);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent);
  color: #04121a;
  border-color: var(--accent);
  transform: translateY(-3px);
}

@media (pointer: coarse) {
  .back-to-top { bottom: 1rem; right: 1rem; }
}

/* ---------- Counter Animation ---------- */
.counter-animate {
  display: inline-block;
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .loading-screen { display: none; }
  .scroll-progress { display: none; }
  .gradient-border::before { animation: none; }
  .stagger-reveal > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .back-to-top { transition: none; }
}

/* ---------- Mobile: cursor is native ---------- */