/* ============================================================
   loader.css — Technology Circuit Loader
   Website প্রথম load হওয়ার সময় দেখায়, তারপর fade out
   ============================================================ */

/* ── Loader Overlay ── */
#jt-loader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: #080d19;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#jt-loader.hide {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ── Logo ── */
.loader-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  animation: loaderFadeIn 0.6s ease forwards;
}

.loader-logo img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  filter: drop-shadow(0 0 16px rgba(59,130,246,0.5));
  animation: logoPulse 2s ease-in-out infinite;
}

.loader-brand {
  font-family: 'Sora', 'Inter', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #e2e8f0;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.loader-tagline {
  font-size: 0.65rem;
  color: #3b82f6;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 500;
}

@keyframes logoPulse {
  0%, 100% { filter: drop-shadow(0 0 12px rgba(59,130,246,0.4)); transform: scale(1); }
  50%       { filter: drop-shadow(0 0 24px rgba(59,130,246,0.8)); transform: scale(1.04); }
}

@keyframes loaderFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Circuit SVG Canvas ── */
.loader-circuit {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.18;
}

/* ── Progress Bar ── */
.loader-bar-wrap {
  width: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  animation: loaderFadeIn 0.6s 0.2s ease both;
}

.loader-bar-track {
  width: 100%;
  height: 2px;
  background: rgba(59,130,246,0.2);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #2563eb, #3b82f6, #60a5fa);
  border-radius: 2px;
  animation: barLoad 1.8s cubic-bezier(0.4,0,0.2,1) forwards;
  position: relative;
}

/* fill bar এর শেষে glow dot */
.loader-bar-fill::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #60a5fa;
  box-shadow: 0 0 10px 3px rgba(96,165,250,0.6);
}

@keyframes barLoad {
  0%   { width: 0%; }
  30%  { width: 45%; }
  60%  { width: 72%; }
  85%  { width: 90%; }
  100% { width: 100%; }
}

/* ── Status Text ── */
.loader-status {
  font-size: 0.72rem;
  color: #475569;
  letter-spacing: 1px;
  font-family: monospace;
  animation: statusCycle 1.8s ease forwards;
}

@keyframes statusCycle {
  0%   { content: ''; }
}

/* ── Scanning dots ── */
.loader-dots {
  display: flex;
  gap: 6px;
  align-items: center;
}

.loader-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #2563eb;
  animation: dotBounce 1.2s ease-in-out infinite;
}

.loader-dot:nth-child(1) { animation-delay: 0s; }
.loader-dot:nth-child(2) { animation-delay: 0.2s; }
.loader-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30%            { transform: translateY(-8px); opacity: 1; }
}

/* ── Grid background overlay ── */
#jt-loader::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ── Corner decorations ── */
.loader-corner {
  position: absolute;
  width: 32px;
  height: 32px;
  border-color: rgba(59,130,246,0.4);
  border-style: solid;
}

.loader-corner-tl { top: 24px; left: 24px; border-width: 2px 0 0 2px; }
.loader-corner-tr { top: 24px; right: 24px; border-width: 2px 2px 0 0; }
.loader-corner-bl { bottom: 24px; left: 24px; border-width: 0 0 2px 2px; }
.loader-corner-br { bottom: 24px; right: 24px; border-width: 0 2px 2px 0; }

/* scan line */
.loader-scan {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59,130,246,0.6), transparent);
  animation: scanDown 1.8s linear forwards;
}

@keyframes scanDown {
  from { top: 0%; opacity: 1; }
  to   { top: 100%; opacity: 0; }
}