/* ============================================
   ANIMATIONS & KEYFRAMES — Premium
   ============================================ */

/* ── Reduced Motion Support ── */
@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;
  }
}

/* ── Reveal Animations ── */
.reveal,
.reveal-scale,
.reveal-left,
.reveal-right {
  opacity: 0;
  transform: translateY(40px);
}

.reveal.revealed,
.reveal-scale.revealed,
.reveal-left.revealed,
.reveal-right.revealed {
  opacity: 1;
  transform: translateY(0);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-delay-1 { transition-delay: 0.12s; }
.reveal-delay-2 { transition-delay: 0.24s; }
.reveal-delay-3 { transition-delay: 0.36s; }
.reveal-delay-4 { transition-delay: 0.48s; }

.reveal-scale {
  transform: scale(0.92) translateY(40px);
}

.reveal-scale.revealed {
  transform: scale(1) translateY(0);
}

.reveal-left {
  transform: translateX(-60px) translateY(0);
}

.reveal-left.revealed {
  transform: translateX(0) translateY(0);
}

.reveal-right {
  transform: translateX(60px) translateY(0);
}

.reveal-right.revealed {
  transform: translateX(0) translateY(0);
}

/* ── Smooth Page Load ── */
body.loaded section {
  opacity: 1;
  transition: all 0.3s ease;
}

body.loaded {
  animation: fadeIn 0.5s ease;
}

/* ── Keyframe Animations ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.4); }
  50% { box-shadow: 0 0 40px rgba(99, 102, 241, 0.8); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

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

@keyframes ripple-anim {
  from { transform: scale(0); opacity: 1; }
  to { transform: scale(4); opacity: 0; }
}

@keyframes bounceIn {
  0% { opacity: 0; transform: scale(0.3); }
  50% { opacity: 1; transform: scale(1.05); }
  100% { transform: scale(1); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-100px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── Pulse Badge ── */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.pulse::before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* ══════════════════════════════════════
   PREMIUM CARD EFFECTS
   ══════════════════════════════════════ */

/* Animated border gradient on hover */
.card-glow {
  position: relative;
  overflow: hidden;
}

.card-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 300%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(99, 102, 241, 0.03) 25%,
    rgba(139, 92, 246, 0.06) 50%,
    rgba(99, 102, 241, 0.03) 75%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 1;
}

.card-glow:hover::before {
  opacity: 1;
  animation: cardShine 1.5s ease-in-out;
}

@keyframes cardShine {
  0% { transform: translateX(-30%); }
  100% { transform: translateX(30%); }
}

/* ── Hero Title Gradient Animation ── */
.text-gradient {
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899, #06b6d4);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 8s ease infinite;
}

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

/* ── Loading Animation ── */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(99, 102, 241, 0.3);
  border-top-color: #6366f1;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ── Skeleton Loader ── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-secondary) 25%,
    var(--bg-tertiary) 50%,
    var(--bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* ══════════════════════════════════════
   BUTTON INTERACTIONS — Premium
   ══════════════════════════════════════ */

.btn {
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease-out-expo);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 0.1s;
}

/* Magnetic button effect class (applied via JS) */
.btn-magnetic {
  transition: transform 0.2s var(--ease-out-expo);
}

/* ══════════════════════════════════════
   CARD HOVER EFFECTS — Enhanced
   ══════════════════════════════════════ */

.card {
  transition: all 0.45s var(--ease-out-expo);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(99, 102, 241, 0.12), 
              0 0 0 1px rgba(99, 102, 241, 0.08);
}

/* Spotlight cursor follow effect — positioned via JS */
.card-spotlight {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.card:hover .card-spotlight {
  opacity: 1;
}

/* ── Link Underline Animation ── */
/* Only apply to inline text links — NOT nav, buttons, social, cards, etc. */
p a,
.about-text a,
.card-description a,
.contact-info-text a {
  position: relative;
  text-decoration: none;
  transition: color 0.3s ease;
}

p a::after,
.about-text a::after,
.card-description a::after,
.contact-info-text a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s var(--ease-out-expo);
}

p a:hover::after,
.about-text a:hover::after,
.card-description a:hover::after,
.contact-info-text a:hover::after {
  width: 100%;
}

/* ── Form Input Focus ── */
.form-input,
.form-textarea {
  transition: all 0.35s var(--ease-out-expo);
  border-color: var(--border);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow),
              0 4px 16px rgba(99, 102, 241, 0.1);
  transform: translateY(-1px);
}

/* ── Counter Animation ── */
.counter-done {
  animation: bounceIn 0.6s var(--ease-spring);
}

/* ── Mobile Menu Animation ── */
.mobile-nav {
  animation: slideInRight 0.3s var(--ease-out-expo);
}

.mobile-nav.open {
  animation: slideInRight 0.3s var(--ease-out-expo);
}

/* ── Header Scroll Animation ── */
.header {
  transition: all 0.35s var(--ease-out-expo);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(20px) saturate(1.3);
}

/* ══════════════════════════════════════
   STAGGER CASCADE ANIMATION
   ══════════════════════════════════════ */

.stagger-item {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s var(--ease-out-expo),
              transform 0.5s var(--ease-out-expo);
}

.stagger-item.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   BADGE SHIMMER
   ══════════════════════════════════════ */

.badge-accent {
  position: relative;
  overflow: hidden;
}

.badge-accent::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  animation: badgeShimmer 3s ease-in-out infinite;
}

@keyframes badgeShimmer {
  0% { left: -100%; }
  50% { left: 100%; }
  100% { left: 100%; }
}

/* ══════════════════════════════════════
   THEME TOGGLE MORPH
   ══════════════════════════════════════ */

.theme-toggle svg {
  transition: transform 0.5s var(--ease-spring),
              opacity 0.3s ease;
}

.theme-toggle:hover svg {
  transform: rotate(30deg) scale(1.1);
}

[data-theme="light"] .theme-toggle:hover svg {
  transform: rotate(-30deg) scale(1.1);
}

/* ══════════════════════════════════════
   BORDER BEAM ANIMATION
   ══════════════════════════════════════ */

@keyframes borderBeam {
  0% {
    offset-distance: 0%;
  }
  100% {
    offset-distance: 100%;
  }
}

/* ══════════════════════════════════════
   AURORA GRADIENT BACKGROUND
   ══════════════════════════════════════ */

@keyframes auroraShift {
  0% { background-position: 0% 50%; }
  25% { background-position: 50% 0%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 100%; }
  100% { background-position: 0% 50%; }
}

/* ══════════════════════════════════════
   TEXT SPLIT REVEAL
   ══════════════════════════════════════ */

.split-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}

.split-word-inner {
  display: inline-block;
  transform: translateY(105%);
  transition: transform 0.6s var(--ease-out-expo);
}

.split-word-inner.revealed {
  transform: translateY(0);
}