/* =====================================================
   VTPROXY — MOBILE RESPONSIVE (≤768px)
   Sticky header + Bottom tab bar, no sidebar
   ===================================================== */

/* Hide mobile UI on desktop */
.mobile-header { display: none; }
.mobile-tabbar  { display: none; }
.hamburger      { display: none; }

@media (max-width: 768px) {

  /* ── Reset ── */
  * { box-sizing: border-box; }
  body { overflow-x: hidden; }

  /* ── Ẩn desktop nav + sidebar ── */
  .nav     { display: none !important; }
  .sidebar { display: none !important; }
  .demo-banner, .announce-banner {
    top: 56px !important;
    font-size: .75rem;
    padding: 7px 12px;
    z-index: 150;
  }

  /* ── Mobile sticky header ── */
  .mobile-header {
    display: flex !important;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 58px;
    background: var(--bg2, #0a1628);
    border-bottom: 1px solid var(--border);
    z-index: 300;
    align-items: center;
    padding: 0 14px;
    justify-content: space-between;
    gap: 8px;
  }
  .mh-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    font-weight: 800;
    color: var(--text);
    white-space: nowrap;
  }
  .mh-title .mh-icon { font-size: 1.2rem; }
  .mh-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }
  .mh-balance-val {
    color: #818cf8;
    font-weight: 800;
    font-size: .9rem;
    white-space: nowrap;
  }
  .mh-balance-label {
    color: var(--text3);
    font-size: .72rem;
    white-space: nowrap;
  }
  .mh-topup-btn {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff !important;
    border: none;
    border-radius: 10px;
    padding: 8px 14px;
    font-size: .8rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none !important;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  }

  /* ── Bottom tab bar ── */
  .mobile-tabbar {
    display: flex !important;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 60px;
    background: var(--card);
    border-top: 1px solid var(--border);
    z-index: 300;
    align-items: center;
    justify-content: space-around;
    padding: 0 4px;
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  .mobile-tabbar a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    text-decoration: none !important;
    color: var(--text3);
    font-size: .6rem;
    font-weight: 600;
    padding: 6px 8px;
    border-radius: 10px;
    flex: 1;
    transition: .15s;
    letter-spacing: .2px;
  }
  .mobile-tabbar a .tab-icon {
    font-size: 1.25rem;
    line-height: 1;
    transition: transform .15s;
  }
  .mobile-tabbar a.tab-active {
    color: #818cf8;
  }
  .mobile-tabbar a.tab-active .tab-icon {
    transform: scale(1.2);
  }

  /* ── Content area ── */
  .dashboard-layout {
    flex-direction: column !important;
  }
  .dash-content {
    padding: 68px 12px 72px !important;
    min-height: 100vh;
  }
  .page-wrap {
    padding: 68px 12px 72px !important;
  }

  /* ── Dashboard metrics ── */
  .card-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 10px !important;
  }
  .metric-card {
    flex-direction: column !important;
    align-items: flex-start !important;
    padding: 14px !important;
    gap: 6px !important;
  }
  .metric-icon { font-size: 1.6rem; }
  .metric-val  { font-size: 1.2rem !important; }
  .metric-lbl  { font-size: .72rem; }

  /* ── Balance bar ── */
  .balance-bar {
    padding: 14px 16px !important;
    margin-bottom: 14px;
    flex-wrap: nowrap;
  }
  .balance-amount { font-size: 1.1rem !important; }

  /* ── Cards ── */
  .card { border-radius: 14px !important; padding: 14px !important; }
  .dash-title { font-size: 1.05rem !important; margin-bottom: 14px !important; }

  /* ── Buy page ── */
  /* Ẩn marquee trên mobile */
  .buy-marquee { display: none !important; }

  /* Wrap chuyển thành column */
  .buy-layout-wrap {
    flex-direction: column !important;
    flex-wrap: wrap !important;
  }

  /* Khu vực tabs + cards — full width */
  .buy-main-area {
    width: 100% !important;
    padding: 12px !important;
    order: 1;
  }

  /* Tabs danh mục: list dọc */
  .buy-tab-row {
    flex-direction: column !important;
    gap: 8px !important;
    flex-wrap: nowrap !important;
    margin-bottom: 16px !important;
    overflow: visible !important;
  }
  .buy-tab-row a {
    width: 100% !important;
    min-width: unset !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 14px 16px !important;
    font-size: .92rem !important;
    border-radius: 12px !important;
  }
  .buy-tab-row a .tab-arrow {
    display: inline-block;
    color: var(--text3);
    font-size: .85rem;
  }

  /* Package cards: 1 cột */
  .buy-pkg-grid {
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }

  /* Order panel — full width, dưới cards */
  .buy-right-panel {
    width: 100% !important;
    position: static !important;
    height: auto !important;
    border-left: none !important;
    border-top: 1px solid var(--border) !important;
    padding: 16px 12px !important;
    order: 2;
  }

  /* Ngày preset grid 3 cột */
  .day-presets {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
  }
  .day-presets button {
    padding: 10px 4px !important;
    font-size: .8rem !important;
    border-radius: 8px !important;
    text-align: center;
  }

  /* Topup preset 2 cột */
  .preset-amounts {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
  }
  .preset-btn {
    padding: 12px 6px !important;
    font-size: .85rem !important;
    font-weight: 700 !important;
    border-radius: 10px !important;
    text-align: center;
  }

  /* Tables */
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  table { min-width: 480px; }
  th, td { font-size: .78rem !important; padding: 8px 10px !important; white-space: nowrap; }

  /* Form */
  .form-row { flex-direction: column !important; gap: 0 !important; }
  .auth-card { padding: 22px 16px !important; border-radius: 16px !important; }
  .form-control { font-size: .95rem !important; }

  /* Topup layout */
  .topup-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  /* Proxy list actions */
  .proxy-actions {
    flex-wrap: wrap;
    gap: 6px;
  }
}

/* ── Tablet ── */
@media (min-width: 769px) and (max-width: 1024px) {
  .sidebar { width: 180px !important; }
  .sidebar-item { font-size: .82rem; }
  .card-grid { grid-template-columns: repeat(2, 1fr) !important; }
}

/* ── Hamburger & nav overlay ── */
@media (max-width: 768px) {
  .hamburger {
    display: flex !important;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--card);
  }
  .hamburger span {
    display: block; width: 20px; height: 2px;
    background: var(--cyan); border-radius: 2px; transition: .3s;
  }
  .hamburger.open span:nth-child(1){ transform:rotate(45deg) translate(5px,5px); }
  .hamburger.open span:nth-child(2){ opacity:0; }
  .hamburger.open span:nth-child(3){ transform:rotate(-45deg) translate(5px,-5px); }

  .nav-links.open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    inset: 0;
    background: rgba(5,10,24,.97);
    z-index: 299;
    padding: 70px 24px 40px;
    gap: 8px;
    overflow-y: auto;
  }
  .nav-links.open .nav-link,
  .nav-links.open .btn {
    padding: 14px 18px; font-size: 1rem;
    border-radius: 10px; text-align: center;
    border: 1px solid var(--border);
    display: block;
  }
  .nav-links.open .nav-balance {
    text-align: center; font-size: 1rem; padding: 12px;
    background: rgba(99,102,241,.1); border-radius: 10px;
  }
  .nav-close {
    position: absolute; top: 16px; right: 16px;
    font-size: 1.4rem; cursor: pointer;
    background: var(--card); border: 1px solid var(--border);
    border-radius: 8px; width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    color: var(--text2);
  }
}