:root {
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    --accent: #0ea5e9;
    --accent-hover: #0284c7;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --warning: #f59e0b;
    
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --radius: 16px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background Blobs for Glassmorphism effect */
.background-blobs {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1;
    overflow: hidden;
}
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}
.blob-1 {
    top: -10%; left: -10%;
    width: 300px; height: 300px;
    background: #4338ca;
    animation: float 10s infinite alternate;
}
.blob-2 {
    bottom: -10%; right: -10%;
    width: 400px; height: 400px;
    background: #0369a1;
    animation: float 12s infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* Layout */
.app-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px 16px;
}

/* Custom Login */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}
.login-box {
    width: 100%;
    max-width: 400px;
    padding: 30px 24px;
    border-radius: 24px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.2);
}
.text-center { text-align: center; }

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* Header */
header {
    display: flex;
    flex-direction: column;
    padding: 16px;
    margin-bottom: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
}
.tabs {
    display: flex;
    gap: 8px;
    background: rgba(0,0,0,0.2);
    padding: 4px;
    border-radius: 12px;
}
.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 10px;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.tab-btn.active {
    background: var(--glass-border);
    color: var(--text-main);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Content Area */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out;
}
.tab-content.active {
    display: block;
}
#tab-system {
    max-width: 900px;
    margin: 0 auto;
}
#tab-users {
    width: 100%;
}

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

/* Cards */
.card {
    padding: 20px;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.card h2 {
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.metric-box {
    background: rgba(0,0,0,0.2);
    padding: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
}
.metric-box.full-width {
    grid-column: 1 / -1;
}
.metric-title {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.metric-value {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}
.text-accent { color: var(--accent); }

/* Progress Bar */
.progress-bar-bg {
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
}
.progress-bar-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.5s ease;
}
.progress-bar-fill.warning { background: var(--warning); }
.progress-bar-fill.danger { background: var(--danger); }

/* PM2 Apps List */
.app-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
}
.app-name { font-weight: 600; }
.app-stats { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.status-dot {
    width: 10px; height: 10px; border-radius: 50%; display: inline-block;
}
.status-online { background: var(--success); box-shadow: 0 0 8px var(--success); }
.status-offline { background: var(--danger); box-shadow: 0 0 8px var(--danger); }

/* Forms & Inputs */
.input-group {
    display: flex;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.input-icon {
    padding: 12px 16px;
    color: var(--text-muted);
    background: rgba(255,255,255,0.05);
}
input, select {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    padding: 12px;
    font-family: inherit;
    font-size: 16px;
    outline: none;
}
input::placeholder { color: var(--text-muted); }
select option { background: var(--bg-color); color: var(--text-main); }

.management-filters {
    display: grid;
    grid-template-columns: minmax(220px, 2fr) minmax(150px, 1fr) minmax(170px, 1fr) auto;
    gap: 10px;
    align-items: center;
}
.filter-select {
    width: 100%;
    min-width: 0;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 12px;
}
.table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
}
.users-table {
    width: 100%;
    min-width: 900px;
    border-collapse: collapse;
    font-size: 13px;
}
.users-table th,
.users-table td {
    padding: 12px 10px;
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--glass-border);
}
.users-table th {
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.35px;
    background: rgba(0,0,0,0.18);
}
.users-table tbody tr:last-child td { border-bottom: none; }
.users-table td small {
    display: block;
    color: var(--text-muted);
    margin-top: 3px;
    line-height: 1.35;
}
.table-empty {
    text-align: center !important;
    color: var(--text-muted);
    padding: 28px !important;
}
.table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 14px;
}
.pagination-controls,
.row-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}
.row-actions .btn-icon {
    padding: 7px 9px;
    font-size: 12px;
}

/* Buttons */
.btn {
    border: none;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}
.btn-primary { background: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); }
.btn-success:hover { background: var(--success-hover); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-icon { padding: 8px 12px; background: rgba(255,255,255,0.1); }
.btn-icon:hover { background: rgba(255,255,255,0.2); }
.text-danger { color: var(--danger) !important; }
.w-100 { width: 100%; }

/* User Details */
.user-header {
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 16px;
}
.avatar {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #4338ca);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}
.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}
.badge-success { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge-danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px dashed rgba(255,255,255,0.1);
}
.detail-row span { color: var(--text-muted); }

/* Details/Pre */
details { background: rgba(0,0,0,0.2); border-radius: var(--radius-sm); padding: 12px; border: 1px solid var(--glass-border); }
summary { font-weight: 600; cursor: pointer; outline: none; }
pre { margin-top: 12px; font-size: 12px; color: #a5b4fc; overflow-x: auto; }

/* Utilities */
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.hidden { display: none !important; }

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(2, 6, 23, 0.72);
    backdrop-filter: blur(5px);
}
.modal-card {
    width: min(100%, 460px);
    padding: 20px;
}
.modal-card .card-header { margin-bottom: 0; }
.modal-card .card-header h2 { margin-bottom: 4px; }

.support-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.8fr) minmax(360px, 1.5fr);
    gap: 16px;
}
.support-inbox,
.support-detail { min-width: 0; }
.support-conversation {
    display: block;
    width: 100%;
    padding: 12px;
    text-align: left;
    color: var(--text-main);
    background: rgba(0,0,0,0.18);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-bottom: 8px;
}
.support-conversation:hover,
.support-conversation.active { border-color: var(--accent); background: rgba(14,165,233,0.12); }
.support-conversation strong,
.support-conversation small { display: block; }
.support-conversation small { color: var(--text-muted); margin-top: 3px; }
.support-conversation .badge { float: right; }
.support-filters {
    display: grid;
    grid-template-columns: 1fr 130px auto;
    gap: 8px;
    margin-bottom: 12px;
}
.support-filters input {
    width: 100%;
    min-width: 0;
    background: rgba(0,0,0,0.2);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 10px;
}
.support-messages {
    min-height: 300px;
    max-height: 55vh;
    overflow-y: auto;
    padding: 12px;
    background: rgba(0,0,0,0.18);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
}
.support-message {
    max-width: 82%;
    padding: 10px 12px;
    border-radius: 12px;
    margin-bottom: 10px;
    white-space: pre-wrap;
    word-break: break-word;
}
.support-message.user { background: rgba(255,255,255,0.1); margin-right: auto; }
.support-message.admin { background: rgba(14,165,233,0.25); margin-left: auto; }
.support-message small { display: block; color: var(--text-muted); margin-top: 4px; font-size: 11px; }
.support-reply textarea,
#announcement-form textarea,
#announcement-form input {
    width: 100%;
    display: block;
    background: rgba(0,0,0,0.2);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 12px;
    font: inherit;
    resize: vertical;
    outline: none;
}
#announcement-form input { margin-bottom: 10px; }
.announcement-warning {
    color: #fcd34d;
    background: rgba(245,158,11,0.12);
    border: 1px solid rgba(245,158,11,0.35);
    border-radius: var(--radius-sm);
    padding: 12px;
    font-size: 13px;
}
.announcement-history { border-top: 1px solid var(--glass-border); padding-top: 16px; }
.announcement-history h3 { font-size: 16px; }
.announcement-item { padding: 11px 0; border-bottom: 1px solid var(--glass-border); }
.announcement-item:last-child { border-bottom: none; }
.announcement-item strong,
.announcement-item small { display: block; }
.announcement-item small { color: var(--text-muted); margin-top: 3px; }

/* Toasts */
#toast-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 9999;
    width: 90%;
    max-width: 400px;
}
.toast {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-left: 4px solid var(--accent);
    padding: 16px;
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    animation: slideUp 0.3s ease, fadeOut 0.3s ease 3s forwards;
    display: flex;
    align-items: center;
    gap: 12px;
}
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--success); }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeOut {
    to { opacity: 0; margin-bottom: -60px; }
}

@media (max-width: 760px) {
    body { font-size: 14px; }
    .app-container { width: 100%; padding: 10px 8px 24px; }
    header { padding: 14px 12px; margin-bottom: 14px; }
    .logo { font-size: 18px; margin-bottom: 12px; }
    .tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 3px; padding: 3px; }
    .tab-btn { min-width: 0; padding: 9px 3px; font-size: 10px; gap: 3px; white-space: nowrap; }
    .card { padding: 14px; }
    .card-header { gap: 8px; }
    .card h2 { font-size: 16px; }
    #tab-system { max-width: none; }
    .metrics-grid { grid-template-columns: 1fr; gap: 10px; }
    .metric-box { padding: 13px; }
    .action-buttons .btn { min-width: 0 !important; padding: 11px 8px; font-size: 13px; }
    .management-filters { grid-template-columns: 1fr; gap: 8px; }
    .management-filters .input-group { grid-column: auto; }
    .management-filters .btn { width: 100%; }
    .table-wrap { overflow: visible; border: none; }
    .users-table { min-width: 0; display: block; }
    .users-table thead { display: none; }
    .users-table tbody,
    .users-table tr,
    .users-table td { display: block; width: 100%; }
    .users-table tr {
        margin-bottom: 10px;
        padding: 8px 12px;
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-sm);
        background: rgba(0,0,0,0.14);
    }
    .users-table tr:last-child { margin-bottom: 0; }
    .users-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 9px 0;
        border-bottom: 1px dashed rgba(255,255,255,0.1);
        text-align: right;
    }
    .users-table td:last-child { border-bottom: none; }
    .users-table td::before {
        content: attr(data-label);
        flex: 0 0 auto;
        color: var(--text-muted);
        font-size: 11px;
        text-transform: uppercase;
        letter-spacing: .25px;
        text-align: left;
    }
    .users-table .table-empty::before { display: none; }
    .users-table td:first-child,
    .users-table td:nth-child(4) { align-items: flex-start; }
    .users-table td:first-child > *,
    .users-table td:nth-child(4) > *,
    .users-table td:nth-child(5) > * { text-align: right; }
    .users-table td:first-child strong,
    .users-table td:first-child small { display: block; }
    .users-table td:nth-child(4) small { margin-top: 0; }
    .users-table td:nth-child(5) { align-items: flex-start; }
    .users-table td:nth-child(5) .badge { margin-left: auto; }
    .row-actions { flex-wrap: wrap; justify-content: flex-end; }
    .table-footer { align-items: center; flex-direction: row; }
    .modal-backdrop { padding: 12px; }
    .modal-card { padding: 16px; }
    .support-layout { grid-template-columns: 1fr; }
    .support-filters { grid-template-columns: 1fr 1fr auto; }
    .support-filters input { grid-column: 1 / -1; }
    .support-messages { min-height: 240px; max-height: 48vh; }
    .support-detail { order: -1; }
    .support-message { max-width: 92%; }
}