/* ==========================================================================
   RESPONSIVE STYLES & MOBILE OPTIMIZATIONS
   ========================================================================== */

/* Tablet & Mobile (<= 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero-desc {
    margin: 0 auto 2rem;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
    max-width: 500px;
    margin: 0 auto;
  }

  .lucky-wheel-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .payment-qr-container {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

/* Tablet Small & Large Mobile (<= 768px) */
@media (max-width: 768px) {
  .nav-container {
    height: 64px;
    justify-content: space-between;
    padding: 0 0.75rem;
    gap: 0.5rem;
  }

  .brand-logo {
    gap: 0.55rem;
    flex-shrink: 0 !important;
    min-width: max-content;
  }

  .brand-icon-box {
    width: 38px;
    height: 38px;
    padding: 2px;
    flex-shrink: 0;
  }

  .brand-name {
    font-size: 1.18rem;
    font-weight: 900;
    white-space: nowrap;
  }

  .brand-tagline {
    display: none;
  }

  .nav-actions {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    flex-shrink: 0;
  }

  .mobile-nav-user-slot {
    display: block;
  }

  /* Responsive Header Auth & Profile Badge */
  .header-desktop-actions {
    display: none !important;
  }

  @media (max-width: 640px) {
    .btn-header-register {
      display: none !important;
    }
    .btn-header-login {
      padding: 0.35rem 0.65rem;
      font-size: 0.78rem;
    }
    .user-header-profile-badge {
      gap: 0.35rem;
      padding: 0.2rem 0.45rem 0.2rem 0.22rem;
    }
    .uh-avatar-box {
      width: 28px;
      height: 28px;
    }
    .uh-avatar-icon {
      font-size: 0.82rem;
    }
    .uh-username {
      max-width: 60px;
      font-size: 0.76rem;
    }
    .uh-balance {
      font-size: 0.7rem;
    }
    .uh-inv-badge {
      font-size: 0.62rem;
      padding: 0 0.25rem;
    }
    .mobile-menu-btn {
      display: flex !important;
      flex-shrink: 0 !important;
    }
  }

  .btn-login-pill {
    padding: 0.42rem 0.85rem;
    font-size: 0.8rem;
    gap: 0.35rem;
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.15);
  }

  .btn-login-pill .pill-text {
    font-size: 0.8rem;
    font-weight: 700;
  }

  .user-profile-pill {
    padding: 0.3rem 0.6rem 0.3rem 0.3rem;
    gap: 0.4rem;
  }

  .user-name-tag {
    max-width: 80px;
    font-size: 0.78rem;
  }

  .mobile-menu-btn {
    display: flex;
    width: 36px;
    height: 36px;
    padding: 0;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: -110%;
    width: 100%;
    height: calc(100vh - 64px);
    background: linear-gradient(180deg, #0b0f19 0%, #05080f 100%);
    border-right: 1.5px solid rgba(245, 158, 11, 0.25);
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    padding: 1.25rem 1rem 2rem 1rem !important;
    gap: 0.65rem !important;
    transition: left var(--transition-normal), visibility var(--transition-normal);
    z-index: var(--z-header);
    box-shadow: none;
    visibility: hidden;
    pointer-events: none;
    overflow-y: auto;
  }

  .nav-menu.active {
    left: 0;
    visibility: visible;
    pointer-events: auto;
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.85);
  }

  .mobile-nav-user-slot {
    width: 100% !important;
    display: block !important;
    margin-bottom: 0 !important;
  }

  .nav-menu .nav-link {
    width: 100% !important;
    height: 50px !important;
    min-height: 50px !important;
    box-sizing: border-box !important;
    color: #e2e8f0 !important;
    padding: 0 1.1rem !important;
    background: rgba(30, 41, 59, 0.55) !important;
    border: 1px solid rgba(245, 158, 11, 0.28) !important;
    border-radius: 12px !important;
    font-family: var(--font-gaming) !important;
    font-size: 0.92rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.3px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    transition: all 0.2s ease !important;
    text-decoration: none !important;
  }
  .nav-menu .nav-link::after {
    display: none !important;
  }
  .nav-menu .nav-link:hover,
  .nav-menu .nav-link.active {
    background: rgba(245, 158, 11, 0.16) !important;
    border-color: rgba(245, 158, 11, 0.5) !important;
    color: #fbbf24 !important;
    transform: translateX(4px);
  }

  .nav-menu .btn-left {
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.65rem !important;
  }
  .nav-menu .btn-icon {
    width: 24px !important;
    min-width: 24px !important;
    height: 24px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.15rem !important;
    line-height: 1 !important;
    text-align: center !important;
  }
  .nav-menu .btn-txt {
    display: inline-block !important;
    white-space: nowrap !important;
  }

  .nav-arrow {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: #fbbf24 !important;
    font-size: 0.85rem !important;
    font-weight: 800 !important;
    width: 20px !important;
    transition: transform 0.2s ease !important;
  }
  .nav-menu .nav-link:hover .nav-arrow {
    transform: translateX(3px) !important;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .flash-sale-banner, .flash-wheel-event-card {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem 1rem;
  }

  .flash-left {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .flash-right-wrap {
    justify-content: center;
    width: 100%;
    margin-top: 0.5rem;
  }

  .filter-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    width: 100%;
    margin-bottom: 1.5rem;
  }

  .filter-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    width: 100%;
  }

  .category-chip {
    padding: 0.4rem 0.65rem;
    font-size: 0.76rem;
    flex: 1 1 calc(50% - 0.35rem);
    text-align: center;
    justify-content: center;
  }

  .category-chip:first-child {
    flex: 1 1 100%;
  }

  .search-box {
    width: 100%;
  }

  .wheel-canvas-wrap {
    width: 280px;
    height: 280px;
  }

  .product-grid, .products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.65rem;
  }

  .item-card, .gaming-catalog-card {
    padding: 0.55rem;
    border-radius: 14px;
  }

  .item-card-title {
    font-size: 0.85rem;
    min-height: 2.3rem;
    margin-bottom: 0.35rem;
  }

  .item-card-meta-box {
    padding: 0.3rem 0.45rem;
    gap: 0.25rem;
    margin-bottom: 0.45rem;
  }

  .meta-stats-row {
    font-size: 0.68rem;
  }

  .meta-rating-row {
    font-size: 0.66rem;
  }

  .stars-gold {
    font-size: 0.68rem;
  }

  .item-card-price-row {
    margin-bottom: 0.45rem;
  }

  .price-prefix {
    font-size: 0.58rem;
  }

  .price-val {
    font-size: 1.1rem;
  }

  .price-currency {
    font-size: 0.75rem;
  }

  .price-discount-tag {
    font-size: 0.65rem;
    padding: 0.1rem 0.35rem;
  }

  .btn-card-action {
    padding: 0.42rem 0.5rem;
    font-size: 0.74rem;
  }

  .hero-section {
    padding-bottom: 0.5rem;
  }

  .top-leaderboard-card {
    margin-bottom: 0.35rem;
  }

  #shop-section {
    padding-top: 0.5rem !important;
  }

  .modal-content {
    margin: 0.5rem;
    max-height: 95vh;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
}

/* Small Mobile (<= 480px) */
@media (max-width: 480px) {
  .nav-container {
    padding: 0 0.5rem;
  }

  .brand-logo {
    gap: 0.45rem;
    flex-shrink: 0 !important;
  }

  .brand-name {
    font-size: 1.05rem;
    white-space: nowrap;
  }

  .brand-icon-box {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
  }

  .uph-stats-grid {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .uph-inv-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .user-profile-dialog {
    margin: 0.5rem !important;
    max-height: 94vh !important;
    width: 96% !important;
    max-width: 440px !important;
  }

  .uph-asset-hub {
    margin: 0.75rem 0.85rem 0.5rem 0.85rem !important;
    gap: 0.55rem !important;
  }
  .uph-nav-tabs {
    padding: 0.45rem 0.85rem !important;
    gap: 0.4rem !important;
  }
  .user-profile-body {
    padding: 0.85rem !important;
  }
  .user-profile-header {
    padding: 0.85rem !important;
  }
  .user-profile-footer {
    padding: 0.75rem 0.85rem !important;
    gap: 0.65rem !important;
  }

  @media (max-width: 360px) {
    .brand-name {
      font-size: 0.95rem;
    }
    .btn-header-login {
      padding: 0.28rem 0.5rem;
      font-size: 0.74rem;
    }
  }

  .product-grid, .products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.5rem;
  }

  .item-card, .gaming-catalog-card {
    padding: 0.45rem;
    border-radius: 12px;
  }

  .item-card-title {
    font-size: 0.8rem;
    min-height: 2.15rem;
    margin-bottom: 0.25rem;
  }

  .item-card-meta-box {
    padding: 0.25rem 0.35rem;
    gap: 0.2rem;
    margin-bottom: 0.35rem;
  }

  .meta-stats-row {
    font-size: 0.62rem;
  }

  .meta-rating-row {
    font-size: 0.6rem;
  }

  .trust-badge {
    display: none;
  }

  .price-prefix {
    font-size: 0.55rem;
  }

  .price-val {
    font-size: 0.98rem;
  }

  .price-currency {
    font-size: 0.7rem;
  }

  .price-discount-tag {
    font-size: 0.6rem;
    padding: 0.08rem 0.3rem;
  }

  .btn-card-action {
    padding: 0.38rem 0.4rem;
    font-size: 0.72rem;
  }

  .hero-title {
    font-size: 1.9rem;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .trust-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .carrier-selector {
    grid-template-columns: repeat(3, 1fr);
  }

  .chip-group {
    grid-template-columns: repeat(2, 1fr);
  }

  .top-leaderboard-card {
    padding: 0.85rem 0.65rem;
  }

  .leaderboard-title-luxury {
    font-size: 0.94rem;
  }

  .gold-gradient-text {
    font-size: 0.94rem;
  }

  .badge-month-pill {
    padding: 0.12rem 0.42rem;
    font-size: 0.68rem;
  }

  .leaderboard-item {
    padding: 0.35rem 0.45rem;
    font-size: 0.74rem;
    gap: 0.4rem;
  }

  .rank-badge {
    min-width: 20px;
    height: 20px;
    font-size: 0.68rem;
  }

  .rank-badge.rank-1, .rank-badge.rank-2, .rank-badge.rank-3 {
    min-width: 26px;
    font-size: 0.7rem;
    padding: 0 0.2rem;
  }

  .leaderboard-tag {
    font-size: 0.68rem;
  }

  .floating-lucky-wheel {
    bottom: 68px;
    left: 12px;
    padding: 0.4rem 0.75rem 0.4rem 0.4rem;
    gap: 0.6rem;
  }

  .floating-wheel-disc-wrap {
    width: 46px;
    height: 46px;
  }

  .fw-pill-fire {
    font-size: 0.62rem;
    padding: 0.1rem 0.4rem;
  }

  .fw-timer-pill {
    font-size: 0.62rem;
    padding: 0.08rem 0.35rem;
  }

  .fw-reward-text {
    font-size: 0.72rem;
  }

  .floating-deposit-anchor {
    bottom: 15px;
    right: 12px;
    padding: 0.35rem 0.65rem;
    font-size: 0.72rem;
    gap: 0.4rem;
    max-width: calc(100vw - 24px);
    box-shadow: 0 4px 15px rgba(234, 88, 12, 0.25);
  }

  .anchor-badge {
    padding: 0.1rem 0.35rem;
    font-size: 0.58rem;
  }

  .anchor-method {
    display: none;
  }

  .anchor-time {
    font-size: 0.64rem;
  }

  /* Responsive Garena Trade Modal & Login */
  .trade-modal-dialog {
    width: 96% !important;
    max-height: 96vh !important;
  }

  .garena-dark-login-box {
    margin: 0.25rem 0.5rem 0.4rem !important;
    padding: 0.5rem 0.65rem !important;
  }

  .garena-profile-wrap {
    margin: 0.15rem 0.5rem 0.4rem !important;
  }

  .garena-profile-card {
    padding: 0.5rem 0.75rem !important;
    gap: 0.65rem !important;
  }

  .profile-name-text {
    max-width: 140px !important;
  }

  /* Hiển thị 2 cột trên điện thoại để hình súng to rõ, dễ nhìn, không bị bé */
  .trade-body-container {
    padding: 0.35rem 0.45rem !important;
    grid-template-columns: 1fr 26px 1fr !important;
    gap: 0.35rem !important;
  }

  .trade-panel-box {
    padding: 0.45rem 0.35rem !important;
    max-height: 280px !important;
  }

  .trade-slots-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.4rem !important;
  }

  .trade-slot {
    min-height: 68px !important;
  }
}