@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a8a;
    --accent: #0ea5e9;
    --success: #059669;
    --danger: #dc2626;
    --warning: #d97706;
    --bg: #f1f5f9;
    --bg-white: #ffffff;
    --card: #ffffff;
    --text: #0f172a;
    --text-2: #334155;
    --muted: #64748b;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --sidebar: #ffffff;
    --shadow: 0 1px 3px rgba(15,23,42,.06), 0 4px 12px rgba(15,23,42,.04);
    --shadow-md: 0 4px 20px rgba(15,23,42,.08);
    --radius: 12px;
    --radius-sm: 8px;
}

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-light); }

/* Auth (legacy — login/register use auth-pages.css) */
body:not(.auth-page) .auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(160deg, #f8fafc 0%, #e2e8f0 100%);
}
body:not(.auth-page) .auth-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 44px 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}
body:not(.auth-page) .auth-card h1 { text-align: center; margin-bottom: 8px; color: var(--primary-dark); font-size: 1.6rem; font-weight: 700; }
body:not(.auth-page) .auth-card .subtitle { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: .95rem; }
body:not(.auth-page) .auth-card .form-footer { text-align: center; margin-top: 20px; color: var(--muted); font-size: .9rem; }

/* Brand logo */
.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}

.site-logo {
    display: block;
    object-fit: cover;
    border-radius: 50%;
    flex-shrink: 0;
    background: #0a0c0f;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.18);
}

.site-logo-sm { width: 36px; height: 36px; }
.site-logo-md { width: 48px; height: 48px; }
.site-logo-lg { width: 72px; height: 72px; }
.site-logo-xl { width: 96px; height: 96px; }

.site-brand-name {
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-brand .site-brand {
    margin-bottom: 10px;
}

.sidebar-brand .site-logo-md {
    width: 56px;
    height: 56px;
}

.mobile-topbar .site-logo-sm {
    width: 34px;
    height: 34px;
}

.auth-card .site-logo-lg,
.auth-card .auth-logo {
    margin: 0 auto 12px;
}

/* Layout */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px; background: var(--sidebar); color: var(--text);
    display: flex; flex-direction: column; position: fixed;
    height: 100vh; overflow-y: auto; z-index: 100;
    border-right: 1px solid var(--border);
    box-shadow: 2px 0 12px rgba(15,23,42,.04);
}
.sidebar-brand {
    padding: 24px 20px; border-bottom: 1px solid var(--border);
}
.sidebar-brand h2 { font-size: 1.2rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 8px; }
.sidebar-brand .badge {
    background: var(--primary); color: #fff;
    padding: 3px 10px; border-radius: 6px; font-size: .72rem; font-weight: 600;
    display: inline-block; margin: 2px 2px 2px 0;
}
.sidebar-nav { flex: 1; padding: 12px 12px 16px; }
.sidebar-nav .nav-section {
    margin-bottom: 12px;
}
.sidebar-nav .nav-section:last-child {
    margin-bottom: 0;
}
.sidebar-nav .nav-section-label {
    display: block;
    padding: 8px 14px 6px;
    font-size: 0.68rem;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
}
.sidebar-nav a {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px; margin-bottom: 2px; color: var(--text-2);
    border-radius: var(--radius-sm); transition: all .2s;
    font-size: .9rem; font-weight: 500;
}
.sidebar-nav a::before { display: none; }
.sidebar-nav a:hover { background: #f1f5f9; color: var(--primary); }
.sidebar-nav a.active {
    background: #eff6ff; color: var(--primary);
    font-weight: 600; border-left: 3px solid var(--primary);
    padding-left: 11px;
}
.sidebar-nav a.logout-link { color: var(--danger); margin-top: 2px; }
.sidebar-nav a.logout-link::before { display: none; }
.sidebar-nav a.logout-link:hover { background: #fef2f2; }

.sidebar-wallet {
    padding: 16px; margin: 12px; border-radius: var(--radius-sm);
    background: #f8fafc; border: 1px solid var(--border);
}
.sidebar-wallet div { margin-bottom: 10px; }
.sidebar-wallet small { display: block; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .4px; font-weight: 600; }
.sidebar-wallet strong { color: var(--success); font-size: 1rem; font-weight: 700; }

.main-content { margin-left: 260px; flex: 1; padding: 28px 32px; min-height: 100vh; background: var(--bg); }

.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border);
}
.page-header h1 { font-size: 1.5rem; font-weight: 700; color: var(--text); }
.user-info { color: var(--muted); font-size: .9rem; }
.user-info strong { color: var(--text); }

/* Cards & Stats */
.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px; margin-bottom: 24px;
}
.stat-card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px 22px;
    box-shadow: var(--shadow); transition: box-shadow .2s;
}
.stat-card:hover { box-shadow: var(--shadow-md); }
.stat-card::before { display: none; }
.stat-card small { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .5px; font-weight: 600; }
.stat-card h3 { font-size: 1.45rem; margin-top: 6px; font-weight: 700; color: var(--text); }

/* Stat card color variants */
.stat-card.blue { border-top: 3px solid #3b82f6; background: linear-gradient(180deg, #eff6ff 0%, #fff 35%); }
.stat-card.green { border-top: 3px solid #10b981; background: linear-gradient(180deg, #ecfdf5 0%, #fff 35%); }
.stat-card.orange { border-top: 3px solid #f59e0b; background: linear-gradient(180deg, #fffbeb 0%, #fff 35%); }
.stat-card.purple { border-top: 3px solid #8b5cf6; background: linear-gradient(180deg, #f5f3ff 0%, #fff 35%); }
.stat-card.teal { border-top: 3px solid #14b8a6; background: linear-gradient(180deg, #f0fdfa 0%, #fff 35%); }
.stat-card.pink { border-top: 3px solid #ec4899; background: linear-gradient(180deg, #fdf2f8 0%, #fff 35%); }
.stat-card.indigo { border-top: 3px solid #6366f1; background: linear-gradient(180deg, #eef2ff 0%, #fff 35%); }
.stat-card.red { border-top: 3px solid #ef4444; background: linear-gradient(180deg, #fef2f2 0%, #fff 35%); }

.stat-card.blue h3 { color: #1d4ed8; }
.stat-card.green h3 { color: #047857; }
.stat-card.orange h3 { color: #b45309; }
.stat-card.purple h3 { color: #6d28d9; }
.stat-card.teal h3 { color: #0f766e; }
.stat-card.pink h3 { color: #be185d; }
.stat-card.indigo h3 { color: #4338ca; }
.stat-card.red h3 { color: #b91c1c; }

.card {
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    margin-bottom: 20px; box-shadow: var(--shadow);
}
.card h2 {
    font-size: 1.05rem; font-weight: 700; margin-bottom: 18px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
    color: var(--text);
}

/* Forms */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: .85rem; color: var(--text-2); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 10px 14px; background: var(--bg-white);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: .95rem; color: var(--text); transition: border-color .2s, box-shadow .2s;
    font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.phone-input-group {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 10px;
}
.phone-input-group select,
.phone-input-group input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: .92rem;
    background: #fff;
    color: var(--text);
}
.phone-input-group select:focus,
.phone-input-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.password-wrap {
    position: relative;
}
.password-wrap input {
    padding-right: 72px;
}
.password-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: #f1f5f9;
    color: var(--primary);
    font-size: .78rem;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: background .2s, color .2s;
}
.password-toggle:hover {
    background: #e2e8f0;
    color: var(--primary-dark);
}

.sponsor-hint {
    margin-top: 8px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    min-height: 0;
    transition: all .2s;
}
.sponsor-hint.found {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}
.sponsor-hint.not-found {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 20px; border: none; border-radius: var(--radius-sm);
    font-size: .9rem; cursor: pointer; font-weight: 600; transition: all .2s;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: .82rem; }
.btn-block { width: 100%; }

/* Tables */
.table-wrap {
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    max-height: min(70vh, 560px);
    overscroll-behavior: contain;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #fff;
}
.table-wrap table {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    margin: 0;
}
.table-wrap table.compact-table,
table.compact-table {
    min-width: 0;
}
.table-wrap thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background: #f8fafc;
    box-shadow: 0 1px 0 var(--border);
}
.table-wrap::-webkit-scrollbar { height: 8px; width: 8px; }
.table-wrap::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 8px; }
.table-wrap::-webkit-scrollbar-track { background: #f1f5f9; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th, td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #f8fafc; font-weight: 600; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .4px; }
tr:hover { background: #f8fafc; }
tr:last-child td { border-bottom: none; }

.badge-tag { display: inline-block; padding: 3px 10px; border-radius: 6px; font-size: .72rem; font-weight: 600; }
.badge-sponsor { background: #dbeafe; color: #1e40af; }
.badge-placement { background: #d1fae5; color: #065f46; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-approved { background: #d1fae5; color: #065f46; }
.badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-processing { background: #dbeafe; color: #1e40af; }
.badge-failed { background: #fecaca; color: #991b1b; }

/* Tabs */
.tabs {
    display: flex; gap: 4px; margin-bottom: 20px;
    border-bottom: 2px solid var(--border); flex-wrap: wrap;
}
.tab {
    padding: 10px 18px; cursor: pointer; color: var(--muted);
    font-weight: 600; font-size: .88rem; transition: all .2s;
    border-bottom: 2px solid transparent; margin-bottom: -2px; background: none; border-top: none; border-left: none; border-right: none;
}
.tab:hover { color: var(--primary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tabs a.tab { text-decoration: none; color: var(--muted); }
.tabs a.tab.active { color: var(--primary); border-bottom-color: var(--primary); background: none; box-shadow: none; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Alerts */
.alert { padding: 14px 18px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: .9rem; border: 1px solid; }
.alert-success { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.alert-info { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }

/* Packages */
.package-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
.package-card {
    border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; text-align: center; transition: all .2s; cursor: pointer; background: var(--card);
}
.package-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow-md); }
.package-card.current { border-color: var(--success); background: #f0fdf4; }
.package-card h4 { margin-bottom: 8px; font-weight: 600; }
.package-card .price { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.package-card .level { font-size: .75rem; color: var(--muted); }

.referral-box {
    background: #f8fafc; border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 14px;
    display: flex; align-items: center; gap: 12px;
}
.referral-box input { flex: 1; background: #fff; }

.admin-layout .sidebar { background: #fff; }
.admin-layout .sidebar-brand h2 { color: var(--primary-dark); }

.admin-layout .admin-customer-link {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: var(--primary) !important;
    font-weight: 600;
    border: 1px solid #bfdbfe;
    margin-top: 8px;
}
.admin-layout .admin-customer-link:hover {
    background: #dbeafe;
    color: var(--primary-dark) !important;
}

.level-summary { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 10px; margin-bottom: 16px; }
.level-box { background: #f8fafc; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; text-align: center; }
.level-box.active { background: #eff6ff; border-color: #93c5fd; }
.level-box .lvl-num { font-size: .72rem; color: var(--muted); text-transform: uppercase; font-weight: 600; }
.level-box .lvl-count { font-size: 1.35rem; font-weight: 700; color: var(--primary); }
.badge-level { background: var(--primary); color: #fff; }
.level-pill { display: inline-block; background: #eff6ff; color: #1e40af; padding: 2px 10px; border-radius: 6px; font-size: .78rem; font-weight: 600; }
.level-pill.pkg { background: #fef3c7; color: #92400e; }
.progress-bar { background: #e2e8f0; border-radius: 6px; height: 8px; margin-top: 10px; overflow: hidden; }
.progress-bar .fill { background: linear-gradient(90deg, var(--primary), var(--accent)); height: 100%; border-radius: 6px; }

.card table th { background: #f8fafc; width: 160px; text-transform: none; letter-spacing: 0; font-size: .85rem; color: var(--muted); }

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.grid-2-auto {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 16px;
    align-items: flex-end;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

/* Mobile top bar + drawer */
.mobile-topbar {
    display: none;
    position: sticky;
    top: 0;
    z-index: 200;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    padding-top: max(12px, env(safe-area-inset-top));
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
}

.mobile-topbar-title {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.mobile-topbar-title strong {
    font-size: 0.95rem;
    color: var(--primary-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-topbar-title small {
    font-size: 0.72rem;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mobile-topbar-id {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary);
    background: #eff6ff;
    padding: 4px 8px;
    border-radius: 6px;
    max-width: 38%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.menu-toggle {
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #f8fafc;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    flex-shrink: 0;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
}

.sidebar-close {
    display: none;
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #f1f5f9;
    color: var(--text);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    z-index: 2;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 190;
}

body.sidebar-open { overflow: hidden; }

@media (max-width: 900px) {
    .mobile-topbar { display: flex; }

    .grid-2,
    .grid-2-auto { grid-template-columns: 1fr; }

    body.sidebar-open .sidebar-backdrop {
        display: block;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: min(300px, 86vw);
        height: 100%;
        height: 100dvh;
        z-index: 210;
        transform: translateX(-105%);
        transition: transform 0.25s ease;
        box-shadow: 8px 0 32px rgba(15, 23, 42, 0.18);
    }

    body.sidebar-open .sidebar { transform: translateX(0); }

    .sidebar-close { display: block; }

    .sidebar-brand { position: relative; padding-right: 48px; }

    .main-content {
        margin-left: 0;
        padding: 16px 14px 28px;
        padding-bottom: max(28px, env(safe-area-inset-bottom));
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }

    .app-layout { flex-direction: column; min-width: 0; }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .page-header h1 { font-size: 1.25rem; }

    .form-row,
    .phone-input-group { grid-template-columns: 1fr; }

    .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }

    .stat-card { padding: 14px 12px; }
    .stat-card h3 { font-size: 1.15rem; word-break: break-word; }

    .card { padding: 16px 14px; }

    .table-wrap {
        overflow: auto;
        -webkit-overflow-scrolling: touch;
        max-height: min(65vh, 480px);
        margin: 0 -2px;
        padding-bottom: 2px;
    }

    .table-wrap table {
        min-width: 560px;
    }

    .package-grid { grid-template-columns: 1fr 1fr; gap: 10px; }

    .referral-box { flex-direction: column; align-items: stretch; }

    .tabs {
        display: flex;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        gap: 4px;
        flex-wrap: nowrap;
        padding-bottom: 4px;
    }

    .tab { white-space: nowrap; flex-shrink: 0; }
}

@media (max-width: 520px) {
    .stats-grid { grid-template-columns: 1fr; }
    .package-grid { grid-template-columns: 1fr; }
    .level-summary { grid-template-columns: repeat(3, 1fr); }

    .btn, .btn-primary, .btn-success, .btn-danger {
        min-height: 44px;
    }

    .page-header > div {
        width: 100%;
        flex-wrap: wrap;
    }
}