/* ============================================
   BASANT JOSHI PORTFOLIO — ANIMATIONS
   ============================================ */

/* ---- REVEAL ANIMATIONS ---- */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-up   { transform: translateY(50px); }
.reveal-left { transform: translateX(-60px); }
.reveal-right{ transform: translateX(60px); }

.reveal-up.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0);
}

/* ---- DELAY CLASSES ---- */
.delay-1 { transition-delay: 0.1s !important; }
.delay-2 { transition-delay: 0.22s !important; }
.delay-3 { transition-delay: 0.34s !important; }
.delay-4 { transition-delay: 0.46s !important; }
.delay-5 { transition-delay: 0.58s !important; }

/* ---- SHIMMER EFFECT ---- */
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}
.shimmer-text {
  background: linear-gradient(90deg,
    var(--text-primary) 0%,
    var(--accent) 40%,
    var(--accent-2) 60%,
    var(--text-primary) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

/* ---- GRADIENT BORDER ANIMATION ---- */
@keyframes gradientBorder {
  0%   { border-color: var(--accent); }
  33%  { border-color: var(--accent-2); }
  66%  { border-color: var(--accent-3); }
  100% { border-color: var(--accent); }
}

/* ---- CARD TILT EFFECT ---- */
.skill-card, .project-card {
  transform-style: preserve-3d;
  will-change: transform;
}

/* ---- GLOW PULSE ANIMATION ---- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(42,133,200,0.15); }
  50%       { box-shadow: 0 0 50px rgba(42,133,200,0.30), 0 0 80px rgba(26,95,160,0.10); }
}
.avatar-placeholder {
  animation: glowPulse 4s ease-in-out infinite;
}

/* ---- SLIDE IN FROM BOTTOM ---- */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- FADE IN ---- */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ---- TYPING EFFECT (managed by JS) ---- */
.typed-text { display: inline; }

/* ---- NAV ACTIVE INDICATOR ANIMATION ---- */
.nav-link::after {
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              background 0.3s ease;
}

/* ---- SKILL BAR ANIMATION ---- */
.skill-fill {
  position: relative;
  overflow: hidden;
}
.skill-fill::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  animation: skillShimmer 2s ease-in-out infinite 1.5s;
}
@keyframes skillShimmer {
  0%   { left: -100%; }
  100% { left: 200%; }
}

/* ---- HERO GRADIENT ANIMATION ---- */
@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.name-gradient {
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite;
}

/* ---- SECTION ENTRY ---- */
.skills, .projects, .about, .contact {
  overflow: hidden;
}

/* ---- LOADER ANIMATION ---- */
@keyframes loaderFadeOut {
  to { opacity: 0; visibility: hidden; pointer-events: none; }
}

/* ---- FLOATING PARTICLES ---- */
.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  animation: particleFloat linear infinite;
}
@keyframes particleFloat {
  0%   { transform: translateY(0) rotate(0deg); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.3; }
  100% { transform: translateY(-800px) rotate(360deg); opacity: 0; }
}

/* ---- HOVER MAGNETIC EFFECT (applied via JS) ---- */
.magnetic {
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- FORM INPUT RIPPLE ---- */
.form-group input:focus,
.form-group textarea:focus {
  animation: inputFocus 0.3s ease forwards;
}
@keyframes inputFocus {
  0%   { box-shadow: 0 0 0 0 rgba(0,212,255,0.2); }
  100% { box-shadow: 0 0 0 4px rgba(0,212,255,0.08); }
}

/* ---- BUTTON RIPPLE ---- */
.btn-primary, .btn-submit {
  position: relative;
  overflow: hidden;
}
.btn-primary::before, .btn-submit::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 0; height: 0;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease, opacity 0.6s ease;
}
.btn-primary:active::before, .btn-submit:active::before {
  width: 300px; height: 300px;
  opacity: 0;
}

/* ---- SCROLL BAR ANIMATION ---- */
.scroll-line {
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to bottom, rgba(0,212,255,0.8), transparent);
  animation: scrollGlow 2s ease-in-out infinite;
}
@keyframes scrollGlow {
  0%   { top: -100%; }
  100% { top: 200%; }
}

/* ---- CONTACT ICON BOUNCE ---- */
.contact-item:hover .contact-icon {
  animation: iconBounce 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes iconBounce {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.15); }
  70%  { transform: scale(0.95); }
  100% { transform: scale(1.05); }
}

/* ---- BACK TO TOP ANIMATION ---- */
.back-to-top:hover i {
  animation: arrowBounce 0.6s ease infinite;
}
@keyframes arrowBounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-4px); }
}

/* ---- PROJECT CARD SHINE ---- */
.project-card::after {
  content: '';
  position: absolute;
  top: -50%; left: -100%;
  width: 60%;
  height: 200%;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.04) 50%, transparent 60%);
  transform: skewX(-15deg);
  transition: left 0.6s ease;
  pointer-events: none;
}
.project-card {
  position: relative;
  overflow: hidden;
}
.project-card:hover::after {
  left: 160%;
}