/* ============================================================
   Luxora Portfolio — Animations CSS
   Keyframes, GSAP helpers, micro-animations
   ============================================================ */

/* ─── Global Reveal Classes (ScrollReveal / GSAP) ─────────── */
.anim-fade-up    { opacity: 0; transform: translateY(40px); }
.anim-fade-down  { opacity: 0; transform: translateY(-40px); }
.anim-fade-left  { opacity: 0; transform: translateX(-40px); }
.anim-fade-right { opacity: 0; transform: translateX(40px); }
.anim-scale-in   { opacity: 0; transform: scale(0.85); }
.anim-done       { opacity: 1 !important; transform: none !important; transition: opacity 0.6s ease, transform 0.6s ease; }

/* ─── Glow Pulse ──────────────────────────────────────────── */
@keyframes glow-pulse {
  0%,100% { box-shadow: 0 0 20px rgba(108,99,255,0.30); }
  50%      { box-shadow: 0 0 50px rgba(108,99,255,0.60), 0 0 100px rgba(108,99,255,0.20); }
}
.glow-pulse { animation: glow-pulse 3s ease-in-out infinite; }

/* ─── Shimmer (skeleton loader) ───────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}
.shimmer {
  background: linear-gradient(90deg,
    var(--bg-card) 25%,
    var(--bg-card-hover) 50%,
    var(--bg-card) 75%
  );
  background-size: 600px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-md);
}

/* ─── Gradient Border Animation ───────────────────────────── */
@keyframes gradient-border-spin {
  to { --angle: 360deg; }
}
@property --angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}
.gradient-border {
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    conic-gradient(from var(--angle), #6C63FF, #a855f7, #38bdf8, #6C63FF) border-box;
  animation: gradient-border-spin 4s linear infinite;
}

/* ─── Text Gradient Animation ─────────────────────────────── */
@keyframes gradient-shift {
  0%,100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}
.animated-gradient-text {
  background: linear-gradient(270deg, #6C63FF, #a855f7, #38bdf8, #10b981, #6C63FF);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 5s ease infinite;
}

/* ─── Tilt Effect Styles ──────────────────────────────────── */
.tilt-card {
  transform-style: preserve-3d;
  transform: perspective(1000px);
  transition: transform 0.1s ease;
  will-change: transform;
}
.tilt-card .tilt-inner {
  transform-style: preserve-3d;
}
.tilt-card .tilt-shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}
.tilt-card:hover .tilt-shine { opacity: 1; }

/* ─── Floating Elements ───────────────────────────────────── */
@keyframes float-slow {
  0%,100% { transform: translateY(0) rotate(0); }
  25%      { transform: translateY(-15px) rotate(2deg); }
  75%      { transform: translateY(10px) rotate(-2deg); }
}
@keyframes float-medium {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-20px); }
}
@keyframes float-fast {
  0%,100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-10px) scale(1.05); }
}
.float-slow   { animation: float-slow 8s ease-in-out infinite; }
.float-medium { animation: float-medium 6s ease-in-out infinite; }
.float-fast   { animation: float-fast 4s ease-in-out infinite; }

/* ─── Counter ─────────────────────────────────────────────── */
.counter-animate {
  display: inline-block;
  transition: opacity 0.3s;
}

/* ─── Skill Progress Ring ─────────────────────────────────── */
.skill-ring {
  position: relative;
  width: 100px;
  height: 100px;
}
.skill-ring svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}
.skill-ring circle {
  fill: none;
  stroke-width: 6;
  stroke-linecap: round;
  transition: stroke-dashoffset 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-ring .ring-bg  { stroke: var(--border-color); }
.skill-ring .ring-fg  { stroke: var(--accent-primary); }
.skill-ring .ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
}

/* ─── Flip Card ───────────────────────────────────────────── */
.flip-card {
  perspective: 1000px;
  height: 340px;
}
.flip-card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.4, 0.2, 0.2, 1);
}
.flip-card:hover .flip-card-inner { transform: rotateY(180deg); }
.flip-card-front,
.flip-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--border-color);
  background: var(--bg-glass);
  backdrop-filter: var(--blur-md);
  transition: border-color var(--transition-base);
}
.flip-card-back {
  transform: rotateY(180deg);
  background: var(--gradient-card);
  border-color: var(--border-accent);
}

/* ─── Smooth Loading Overlay ──────────────────────────────── */
#page-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  transition: opacity 0.5s ease, visibility 0.5s;
}
#page-loader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.loader-logo {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.loader-bar-wrap {
  width: 200px;
  height: 3px;
  background: var(--border-color);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.loader-bar {
  height: 100%;
  background: var(--gradient-text);
  border-radius: var(--radius-full);
  animation: loader-progress 1.2s ease-in-out forwards;
}
@keyframes loader-progress {
  from { width: 0; }
  to   { width: 100%; }
}

/* ─── Cursor ──────────────────────────────────────────────── */
.custom-cursor {
  width: 12px;
  height: 12px;
  background: var(--accent-primary);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: background 0.2s, transform 0.1s;
  will-change: transform;
}
.cursor-follower {
  width: 36px;
  height: 36px;
  border: 2px solid rgba(108,99,255,0.50);
  border-radius: 50%;
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 99998;
  transform: translate(-50%, -50%);
  transition: all 0.12s ease;
  will-change: transform;
}
.cursor-hover .custom-cursor {
  transform: translate(-50%,-50%) scale(2.5);
  background: var(--accent-secondary);
}
.cursor-hover .cursor-follower {
  transform: translate(-50%,-50%) scale(1.5);
  border-color: rgba(168,85,247,0.60);
}

/* ─── Lightbox ────────────────────────────────────────────── */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,15,30,0.95);
  z-index: 9990;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.lightbox-overlay.open {
  opacity: 1;
  visibility: visible;
}
.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}
.lightbox-overlay.open .lightbox-img { transform: scale(1); }
.lightbox-close {
  position: absolute;
  top: 20px; right: 20px;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.lightbox-close:hover { background: var(--bg-card-hover); transform: rotate(90deg); }

/* ─── Filter Tabs ─────────────────────────────────────────── */
.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-xl);
}
.filter-tab {
  padding: 9px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-tab:hover,
.filter-tab.active {
  background: rgba(108,99,255,0.15);
  border-color: var(--border-accent);
  color: var(--accent-primary);
}