/* ========================================
   TECH PAGE LOADER - ITAgency
======================================== */

@use '../abstracts/variables' as v;
@use '../abstracts/mixins' as m;
@use 'sass:map';

.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: v.$primary-dark;
  z-index: map.get(v.$z-indices, 'modal') - 1;
  opacity: 1;
  visibility: visible;
  
  @include m.flex(row, center, center);
  @include m.transition(all 0.8s cubic-bezier(0.4, 0, 0.2, 1));

  // Tech grid background pattern
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
      linear-gradient(rgba(v.$primary, 0.1) 1px, transparent 1px),
      linear-gradient(90deg, rgba(v.$primary, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
    opacity: 0.3;
  }

  &.loaded {
    opacity: 0;
    visibility: hidden;
    @include m.transform(scale(1.1));
  }
}

.loader-container {
  text-align: center;
  color: v.$white;
  animation: fadeInUp 0.8s ease-out;
  position: relative;
  z-index: 2;
}

.loader-content {
  @include m.flex(column, center, center);
  gap: map.get(v.$spacers, 4); // 2rem
}

/* Logo styles removed - no logo needed */

/* ========================================
   TECH LOADING SPINNER
======================================== */
.loader-spinner {
  position: relative;
  width: 120px;
  height: 120px;
}

.spinner-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  @include m.transform(translate(-50%, -50%));
  
  // Outer ring
  &::before {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    border: 2px solid transparent;
    border-top: 2px solid v.$primary-light;
    border-right: 2px solid v.$primary-light;
    @include m.border-radius(50%);
    animation: spinnerRotate 2s linear infinite;
    filter: drop-shadow(0 0 10px rgba(v.$primary-light, 0.6));
  }
  
  // Middle ring
  &::after {
    content: '';
    position: absolute;
    top: 15px;
    left: 15px;
    width: 90px;
    height: 90px;
    border: 2px solid transparent;
    border-bottom: 2px solid v.$primary;
    border-left: 2px solid v.$primary;
    @include m.border-radius(50%);
    animation: spinnerRotate 1.5s linear infinite reverse;
    filter: drop-shadow(0 0 8px rgba(v.$primary, 0.8));
  }
  
  // Inner ring
  div {
    position: absolute;
    top: 30px;
    left: 30px;
    width: 60px;
    height: 60px;
    border: 1px solid transparent;
    border-top: 1px solid v.$white;
    @include m.border-radius(50%);
    animation: spinnerRotate 1s linear infinite;
    filter: drop-shadow(0 0 5px rgba(v.$white, 0.9));
    
    &::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 8px;
      height: 8px;
      background: v.$primary-light;
      @include m.border-radius(50%);
      @include m.transform(translate(-50%, -50%));
      animation: centerPulse 1.5s ease-in-out infinite;
      box-shadow: 0 0 15px rgba(v.$primary-light, 0.8);
    }
  }
}

/* ========================================
   TECH PROGRESS BAR
======================================== */
.loader-progress {
  width: 300px;
  height: 4px;
  background: rgba(v.$white, 0.1);
  @include m.border-radius(10px);
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(v.$primary, 0.3);
  
  &::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(90deg, transparent, rgba(v.$primary-light, 0.5), transparent);
    animation: progressScan 2s linear infinite;
  }
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, v.$primary, v.$primary-light, v.$white);
  @include m.border-radius(10px);
  width: 0%;
  @include m.transition(width 0.3s ease);
  position: relative;
  box-shadow: 0 0 20px rgba(v.$primary-light, 0.6);
  
  &::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(v.$white, 0.8));
    animation: progressGlow 1s ease-in-out infinite;
  }
}

/* ========================================
   TECH ANIMATIONS
======================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    @include m.transform(translateY(50px) scale(0.8));
  }
  to {
    opacity: 1;
    @include m.transform(translateY(0) scale(1));
  }
}

@keyframes spinnerRotate {
  0% {
    @include m.transform(translate(-50%, -50%) rotate(0deg));
  }
  100% {
    @include m.transform(translate(-50%, -50%) rotate(360deg));
  }
}

@keyframes centerPulse {
  0%, 100% {
    @include m.transform(translate(-50%, -50%) scale(1));
    opacity: 1;
  }
  50% {
    @include m.transform(translate(-50%, -50%) scale(1.8));
    opacity: 0.6;
  }
}

@keyframes progressScan {
  0% {
    @include m.transform(translateX(-100%));
  }
  100% {
    @include m.transform(translateX(300px));
  }
}

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

@keyframes gridMove {
  0% {
    @include m.transform(translate(0, 0));
  }
  100% {
    @include m.transform(translate(50px, 50px));
  }
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */

@include m.respond-to-max('md') {
  .loader-spinner {
    width: 100px;
    height: 100px;
    
    &::before {
      width: 100px;
      height: 100px;
    }
    
    &::after {
      top: 12px;
      left: 12px;
      width: 76px;
      height: 76px;
    }
    
    div {
      top: 25px;
      left: 25px;
      width: 50px;
      height: 50px;
    }
  }
  
  .loader-progress {
    width: 250px;
  }
}

@include m.respond-to-max('sm') {
  .loader-spinner {
    width: 80px;
    height: 80px;
    
    &::before {
      width: 80px;
      height: 80px;
    }
    
    &::after {
      top: 10px;
      left: 10px;
      width: 60px;
      height: 60px;
    }
    
    div {
      top: 20px;
      left: 20px;
      width: 40px;
      height: 40px;
    }
  }
  
  .loader-progress {
    width: 200px;
    height: 3px;
  }
}

/* ========================================
   BODY OVERFLOW CONTROL
======================================== */

body {
  &.loading {
    overflow: hidden;
    height: 100vh;
  }

  &.loaded {
    overflow: hidden;
    height: auto;
  }
}