* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Hide scrollbar for all elements */
* {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

*::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

html {
  overflow-x: hidden;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

html::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

:root {
  --primary-color: #0088cc;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --glowing-color: #ffd700;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg-color);
  color: var(--text-primary);
  overflow-x: hidden !important;
  overflow-y: auto;
  /* Hide scrollbar */
  scrollbar-width: none !important; /* Firefox */
  -ms-overflow-style: none !important; /* IE and Edge */
}

body::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.app-container {
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-color);
  overflow-x: hidden;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

.app-container::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.app-header {
  background: var(--primary-color);
  color: white;
  padding: 1rem;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.app-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

.app-content {
  flex: 1;
  padding: 1rem;
  padding-bottom: 80px;
  overflow-y: auto;
  /* Hide scrollbar */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

.app-content::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.page {
  display: none;
  animation: fadeIn 0.3s ease-in;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Profile Page */
.profile-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.profile-avatar {
  margin-bottom: 1rem;
}

.avatar-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  margin: 0 auto;
  color: white;
}

.profile-card h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.user-username {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.stats-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.stats-section h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  text-align: center;
  padding: 1rem;
  background: var(--bg-color);
  border-radius: 8px;
}

.stat-value {
  font-size: 2rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.type-stats {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.type-stat-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-color);
  border-radius: 8px;
}

.type-stat-label {
  font-weight: 500;
}

.type-stat-value {
  color: var(--primary-color);
  font-weight: bold;
}

/* Inventory Page */
.lootbox-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.lootbox-count {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin: 1.5rem 0;
}

.lootbox-icon {
  font-size: 4rem;
}

.lootbox-info {
  text-align: left;
}

.lootbox-number {
  font-size: 3rem;
  font-weight: bold;
  color: var(--primary-color);
}

.lootbox-label {
  color: var(--text-secondary);
  font-size: 1rem;
}

.open-lootbox-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  width: 100%;
  margin-top: 1rem;
}

.open-lootbox-btn:hover:not(:disabled) {
  background: #006ba3;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.open-lootbox-btn:disabled {
  background: var(--secondary-color);
  cursor: not-allowed;
  opacity: 0.6;
}

.opened-cards-container {
  margin-top: 1.5rem;
}

.opened-cards-title {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  text-align: center;
}

.opened-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}

/* Collection Page */
.collection-header {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.collection-header h2 {
  margin-bottom: 1rem;
}

.collection-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--border-color);
  background: var(--bg-color);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.9rem;
}

.filter-btn:hover {
  border-color: var(--primary-color);
}

.filter-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.card-item {
  background: transparent;
  border-radius: 12px;
  padding: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s;
  position: relative;
  aspect-ratio: 2 / 3;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Border colors based on card type using pseudo-element with gradient */
.card-border-master::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #e91e63 0%, #9c27b0 100%);
  z-index: 0;
  pointer-events: none;
}

.card-border-grandmaster::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #f44336 0%, #ff9800 100%);
  z-index: 0;
  pointer-events: none;
}

.card-border-challenger::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #00bcd4 0%, #2196f3 100%);
  z-index: 0;
  pointer-events: none;
}

.card-border-pro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #4caf50 0%, #2196f3 100%);
  z-index: 0;
  pointer-events: none;
}

.card-item.glowing {
  box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.card-item.glowing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
  z-index: 1;
  pointer-events: none;
}

/* Holo effect variables */
:root {
  --red: #f80e35;
  --yellow: #eedf10;
  --green: #21e985;
  --blue: #0dbde9;
  --violet: #c929f1;
  --pointer-x: 50%;
  --pointer-y: 50%;
  --card-opacity: 0;
  --pointer-from-center: 0;
  --pointer-from-top: 0.5;
  --pointer-from-left: 0.5;
  --background-x: 50%;
  --background-y: 50%;
}

/* Holo shine and glare layers for glowing cards */
.card-item.glowing .card__shine,
.card-item.glowing .card__glare {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 9px;
  pointer-events: none;
  z-index: 2;
  will-change: transform, opacity, background-image, background-size,
    background-position, background-blend-mode, filter;
  overflow: hidden;
}

.card-item.glowing .card__shine {
  --scanlines-space: 1px;
  --scanlines-light: #666;
  --scanlines-dark: black;
  --bars: 3%;
  --bar-color: hsla(0, 0%, 70%, 1);
  --bar-bg: hsla(0, 0%, 0%, 1);

  background-image: 
    repeating-linear-gradient( 110deg, 
      var(--violet), var(--blue), var(--green), var(--yellow), var(--red), 
      var(--violet), var(--blue), var(--green), var(--yellow), var(--red),
      var(--violet), var(--blue), var(--green), var(--yellow), var(--red)
    ),
    repeating-linear-gradient( 90deg, 
      var(--scanlines-dark) calc(var(--scanlines-space) * 0), var(--scanlines-dark) calc(var(--scanlines-space) * 2),
      var(--scanlines-light) calc(var(--scanlines-space) * 2), var(--scanlines-light) calc(var(--scanlines-space) * 4)
    );

  background-position: 
    calc(((50% - var(--background-x)) * 2.6) + 50%) calc(((50% - var(--background-y)) * 3.5) + 50%),
    center center;

  background-size: 
    400% 400%, 
    cover;

  background-blend-mode: overlay;
  filter: brightness(1.1) contrast(1.1) saturate(1.2);
  mix-blend-mode: color-dodge;
  opacity: var(--card-opacity);
}

.card-item.glowing .card__shine:before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 9px;

  background-image:
    repeating-linear-gradient( 90deg, 
      var(--bar-bg) calc(var(--bars)*2), 
      var(--bar-color) calc(var(--bars)*3), 
      var(--bar-bg) calc(var(--bars)*3.5), 
      var(--bar-color) calc(var(--bars)*4), 
      var(--bar-bg) calc(var(--bars)*5), 
      var(--bar-bg) calc(var(--bars)*14)
    ),
    repeating-linear-gradient( 90deg, 
      var(--bar-bg) calc(var(--bars)*2), 
      var(--bar-color) calc(var(--bars)*3), 
      var(--bar-bg) calc(var(--bars)*3.5), 
      var(--bar-color) calc(var(--bars)*4), 
      var(--bar-bg) calc(var(--bars)*5), 
      var(--bar-bg) calc(var(--bars)*10)
    );

  background-position: 
    calc((((50% - var(--background-x)) * 1.65) + 50% ) + (var(--background-y) * 0.5)) var(--background-x), 
    calc((((50% - var(--background-x)) * -0.9) + 50%) - (var(--background-y) * 0.75) ) var(--background-y);

  background-size: 
    200% 200%,
    200% 200%;

  background-blend-mode: screen;
  filter: brightness( 1.15 ) contrast( 1.1 );
  mix-blend-mode: hard-light;
}

.card-item.glowing .card__shine:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 9px;
    
  background-image: 
    radial-gradient( 
      farthest-corner circle 
        at var(--pointer-x) var(--pointer-y), 
        hsla(0, 0%, 90%, 0.8) 0%, 
        hsla(0, 0%, 78%, 0.1) 25%, 
        hsl(0, 0%, 0%) 90% 
    );
    
  background-position: 
    center center;

  background-size:
    cover;

  mix-blend-mode: luminosity; 
  filter: brightness(0.6) contrast(4);
}

.card-item.glowing .card__glare {
  opacity: calc( var(--card-opacity) * .8 );
  filter: brightness(0.8) contrast(1.5);
  mix-blend-mode: overlay;

  background-image: 
    radial-gradient( 
      farthest-corner circle at var(--pointer-x) var(--pointer-y), 
      hsl(180, 100%, 95%) 5%, 
      hsla(0, 0%, 39%, 0.25) 55%, 
      hsla(0, 0%, 0%, 0.36) 110% 
    );
}

.card-item.glowing .card__glare:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 9px;

  background-image: 
    radial-gradient( 
      farthest-corner circle at var(--pointer-x) var(--pointer-y), 
      hsl(180, 100%, 95%) 5%, 
      hsla(0, 0%, 39%, 0.25) 55%, 
      hsla(0, 0%, 0%, 0.36) 110% 
    );

  mix-blend-mode: overlay;
  filter: brightness(.6) contrast(3);
}

@media screen and (max-width: 900px) {
  .card-item.glowing .card__shine {
    --scanlines-space: .5px;
  }
}

.card-content {
  --card-fill: linear-gradient(145deg, rgba(255, 255, 255, 0.04) 0%, rgba(0, 0, 0, 0.7) 100%);
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1rem;
  position: relative;
  z-index: 1;
  background: #0c0d13;
  border-radius: 9px;
  margin: 3px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  color: #f4f6ff;
  box-shadow: inset 0 0 25px rgba(0, 0, 0, 0.5);
}

.card-content::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-fill);
  opacity: 1;
  z-index: 0;
}

.card-content > * {
  position: relative;
  z-index: 3;
}

.card-fill-master {
  --card-fill: linear-gradient(160deg, rgba(233, 30, 99, 0.65) 0%, rgba(156, 39, 176, 0.8) 45%, rgba(26, 5, 33, 0.95) 100%);
}

.card-fill-grandmaster {
  --card-fill: linear-gradient(155deg,
    rgba(255, 205, 72, 0.85) 0%,
    rgba(255, 134, 63, 0.75) 35%,
    rgba(244, 67, 54, 0.8) 65%,
    rgba(45, 11, 0, 0.9) 100%);
}

.card-fill-challenger {
  --card-fill: linear-gradient(150deg,
    rgba(108, 235, 255, 0.9) 0%,
    rgba(0, 188, 212, 0.85) 25%,
    rgba(41, 167, 255, 0.8) 55%,
    rgba(6, 24, 58, 0.95) 100%);
}

.card-fill-pro {
  --card-fill: linear-gradient(155deg,
    rgba(170, 255, 195, 0.85) 0%,
    rgba(76, 175, 80, 0.8) 35%,
    rgba(33, 150, 243, 0.65) 65%,
    rgba(6, 22, 12, 0.95) 100%);
}

.card-rank-image {
  flex: 0 0 58%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  margin-bottom: 0.5rem;
}

.rank-img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.card-title {
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
  margin-top: auto;
  color: inherit;
  text-align: center;
  line-height: 1.3;
  min-height: 2.2em;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.card-type-text {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-top: 0;
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.empty-state-hint {
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Bottom Navigation */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-around;
  padding: 0.5rem 0;
  z-index: 1000;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  border: none;
  background: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s;
  font-size: 0.75rem;
}

.nav-item svg {
  width: 24px;
  height: 24px;
}

.nav-item.active {
  color: var(--primary-color);
}

.nav-item:hover {
  color: var(--primary-color);
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(0,0,0,0.1);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
  }
}