/* ═══════════════════════════════════════════════════════
   animations.css — NEXUS Converter Pro
   Keyframes · Motion · Micro-interactions
   ═══════════════════════════════════════════════════════ */

/* ── ENTRANCE ANIMATIONS ────────────────────── */
@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

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

@keyframes cardReveal {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

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

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

/* ── PULSE & GLOW ───────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px currentColor; }
  50%       { opacity: 0.6; box-shadow: 0 0 20px currentColor; }
}

@keyframes glowPulse {
  0%, 100% { filter: brightness(1) drop-shadow(0 0 8px var(--cyan)); }
  50%       { filter: brightness(1.3) drop-shadow(0 0 24px var(--cyan)); }
}

@keyframes borderGlow {
  0%, 100% { box-shadow: 0 0 0 1px var(--cyan-glow); }
  50%       { box-shadow: 0 0 0 3px var(--cyan-glow), 0 0 20px var(--cyan-glow); }
}

/* ── SCAN LINE ──────────────────────────────── */
@keyframes scanLine {
  0%   { transform: translateY(-100%); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateY(100vh); opacity: 0; }
}

.scan-line {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: scanLine 8s linear infinite;
  pointer-events: none;
  z-index: 0;
  opacity: 0.15;
}

/* ── FLOAT ──────────────────────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-8px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-6px) rotate(1deg); }
  66%       { transform: translateY(-3px) rotate(-1deg); }
}

/* ── RIPPLE ─────────────────────────────────── */
@keyframes ripple-anim {
  to { transform: translate(-50%, -50%) scale(4); opacity: 0; }
}

/* ── SPINNER / LOADER ───────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

.spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

/* Processing animation — dual ring */
.loader-ring {
  position: relative;
  width: 48px; height: 48px;
  display: inline-block;
}

.loader-ring::before, .loader-ring::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
}

.loader-ring::before {
  border-top-color: var(--cyan);
  animation: spin 0.9s linear infinite;
}

.loader-ring::after {
  inset: 6px;
  border-bottom-color: var(--magenta);
  animation: spinReverse 0.6s linear infinite;
}

/* ── PROGRESS BAR SHIMMER ───────────────────── */
@keyframes shimmer {
  from { background-position: -400px 0; }
  to   { background-position: 400px 0; }
}

#progress-bar {
  background: linear-gradient(
    90deg,
    var(--cyan) 0%,
    #00BFFF 40%,
    var(--cyan) 60%,
    #00BFFF 100%
  );
  background-size: 400px 100%;
  animation: shimmer 2s linear infinite;
}

/* ── GLITCH EFFECT ──────────────────────────── */
@keyframes glitch1 {
  0%   { clip-path: inset(0 0 95% 0); transform: translateX(-4px); }
  20%  { clip-path: inset(30% 0 50% 0); transform: translateX(4px); }
  40%  { clip-path: inset(80% 0 5% 0); transform: translateX(-2px); }
  60%  { clip-path: inset(10% 0 80% 0); transform: translateX(2px); }
  80%  { clip-path: inset(50% 0 30% 0); transform: translateX(-4px); }
  100% { clip-path: inset(95% 0 0 0); transform: translateX(0); }
}

@keyframes glitch2 {
  0%   { clip-path: inset(0 0 95% 0); transform: translateX(4px); }
  20%  { clip-path: inset(60% 0 20% 0); transform: translateX(-4px); }
  40%  { clip-path: inset(20% 0 60% 0); transform: translateX(3px); }
  60%  { clip-path: inset(75% 0 10% 0); transform: translateX(-3px); }
  80%  { clip-path: inset(5% 0 85% 0); transform: translateX(4px); }
  100% { clip-path: inset(90% 0 0 0); transform: translateX(0); }
}

.glitch-text {
  position: relative;
  display: inline-block;
}

.glitch-text::before,
.glitch-text::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  overflow: hidden;
}

.glitch-text::before {
  color: var(--cyan);
  animation: glitch1 3.5s infinite linear;
  opacity: 0.6;
}

.glitch-text::after {
  color: var(--magenta);
  animation: glitch2 3.5s 0.3s infinite linear;
  opacity: 0.4;
}

/* ── LOGO ANIMATION ─────────────────────────── */
.logo-mark svg {
  animation: glowPulse 3s ease-in-out infinite;
}

/* ── HERO BACKGROUND PARTICLES ──────────────── */
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.particle {
  position: absolute;
  border-radius: 50%;
  animation: floatSlow var(--dur, 8s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
  opacity: 0.4;
}

.particle-1 { width: 4px; height: 4px; background: var(--cyan); top: 20%; left: 10%; --dur: 7s; --delay: 0s; }
.particle-2 { width: 6px; height: 6px; background: var(--magenta); top: 60%; right: 15%; --dur: 9s; --delay: -2s; }
.particle-3 { width: 3px; height: 3px; background: var(--purple); top: 40%; right: 30%; --dur: 6s; --delay: -4s; }
.particle-4 { width: 5px; height: 5px; background: var(--cyan); bottom: 20%; left: 25%; --dur: 11s; --delay: -1s; }
.particle-5 { width: 4px; height: 4px; background: var(--gold); top: 75%; right: 40%; --dur: 8s; --delay: -3s; }
.particle-6 { width: 3px; height: 3px; background: var(--magenta); top: 30%; left: 40%; --dur: 10s; --delay: -5s; }

/* ── PAGE TRANSITIONS ───────────────────────── */
.page-enter {
  animation: fadeIn 0.4s ease both;
}

/* ── NEON BORDERS ANIMATED ──────────────────── */
.neon-border-animated {
  animation: borderGlow 2s ease-in-out infinite;
}

/* ── TYPING CURSOR ───────────────────────────── */
@keyframes blink {
  50% { opacity: 0; }
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--cyan);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 0.8s step-end infinite;
}

/* ── STAGGER DELAY HELPERS ──────────────────── */
.stagger-1 { animation-delay: 0.0s !important; }
.stagger-2 { animation-delay: 0.08s !important; }
.stagger-3 { animation-delay: 0.16s !important; }
.stagger-4 { animation-delay: 0.24s !important; }
.stagger-5 { animation-delay: 0.32s !important; }
.stagger-6 { animation-delay: 0.40s !important; }
.stagger-7 { animation-delay: 0.48s !important; }
.stagger-8 { animation-delay: 0.56s !important; }
.stagger-9 { animation-delay: 0.64s !important; }
.stagger-10 { animation-delay: 0.72s !important; }

/* ── DRAG OVER ───────────────────────────────── */
@keyframes dragPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,245,255,0.3); }
  50%       { box-shadow: 0 0 0 8px rgba(0,245,255,0); }
}

.dropzone.drag-over {
  animation: dragPulse 1s ease-in-out infinite;
}

/* ── SUCCESS CHECKMARK ───────────────────────── */
@keyframes checkDraw {
  from { stroke-dashoffset: 100; }
  to   { stroke-dashoffset: 0; }
}

.check-svg path {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: checkDraw 0.5s ease 0.2s forwards;
}

/* ── ORBIT LINES (decorative) ────────────────── */
@keyframes orbit {
  from { transform: rotate(0deg) translateX(80px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(80px) rotate(-360deg); }
}

/* ── REDUCE MOTION ───────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}