/* SD-WAN NOC — Dark Enterprise Professional & Fully Responsive */
:root {
    --bg: #0d1117;
    --bg2: #161b22;
    --bg3: #21262d;
    --border: #30363d;
    --text: #c9d1d9;
    --head: #58a6ff;
    --green: #238636;
    --red: #da3633;
    --yellow: #d2991d;
    --white: #f0f6fc;
    --font: "Segoe UI", Tahoma, Verdana, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
    font-family: var(--font);
    font-size: 13px;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

/* Layout */
.page { display: flex; min-height: 100vh; position: relative; }

/* Sidebar Desktop */
.sidebar {
    width: 230px;
    background: var(--bg2);
    border-right: 1px solid var(--border);
    flex-shrink: 0;
    z-index: 100;
    transition: transform 0.25s ease-in-out;
}
.sidebar .brand { 
    padding: 18px 16px; 
    border-bottom: 1px solid var(--border); 
    position: relative;
}
.sidebar .brand h1 { font-size: 17px; color: var(--green); font-weight: 700; word-break: break-word; }
.sidebar .brand p { font-size: 10px; color: #8b949e; margin-top: 2px; letter-spacing: 1px; text-transform: uppercase; }

.mobile-close-btn {
    display: none;
    position: absolute;
    right: 12px;
    top: 16px;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.menu { list-style: none; }
.menu li a {
    display: block; color: #8b949e; padding: 12px 16px; text-decoration: none;
    font-size: 13px; font-weight: 500; border-left: 3px solid transparent;
    transition: background 0.15s ease, color 0.15s ease;
}
.menu li a:hover { color: var(--white); background: rgba(255,255,255,0.04); border-left-color: var(--border); }
.menu li a.active { color: var(--white); background: rgba(35,134,54,0.15); border-left-color: var(--green); font-weight: 600; }

/* Tooltip Desktop */
@media (min-width: 769px) {
    .menu li a[title] { position: relative; }
    .menu li a[title]:hover::after {
        content: attr(title); position: absolute; left: 100%; top: 0;
        background: var(--bg3); color: var(--text); padding: 6px 12px;
        white-space: nowrap; border: 1px solid var(--border); font-size: 11px; z-index: 999;
        border-radius: 4px; box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    }
}

.main { flex: 1; display: flex; flex-direction: column; background: var(--bg); min-width: 0; }

/* Topbar */
.topbar {
    background: var(--bg2); border-bottom: 1px solid var(--border);
    padding: 12px 20px; display: flex; justify-content: space-between; align-items: center;
    gap: 15px; flex-wrap: wrap;
}
.topbar-left { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; }
.topbar-left h2 { font-size: 16px; color: var(--head); font-weight: 600; margin: 0; word-break: break-word; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.user-chip {
    background: var(--bg3); border: 1px solid var(--border); border-radius: 4px;
    padding: 5px 10px; font-size: 12px; color: var(--text); font-weight: 500;
}
.user-actions { display: flex; gap: 6px; align-items: center; }

/* Mobile Menu Hamburger Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}
.mobile-menu-btn .bar {
    width: 100%;
    height: 3px;
    background-color: var(--head);
    border-radius: 2px;
    transition: all 0.2s ease;
}

/* Content & Footer */
.content { flex: 1; padding: 20px; overflow-y: auto; }
.footer {
    background: var(--bg2); border-top: 1px solid var(--border);
    padding: 10px 20px; text-align: right; color: #484f58; font-size: 11px;
}

/* Stat Cards Responsive */
.stat-cards { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); 
    gap: 14px; 
    margin-bottom: 24px; 
}
.stat-card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: 6px;
    padding: 16px; display: flex; flex-direction: column; justify-content: center;
}
.stat-card h3 { font-size: 11px; color: #8b949e; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-num { font-size: 26px; font-weight: 700; color: var(--white); line-height: 1.1; }
.stat-up .stat-num { color: var(--green); }
.stat-down .stat-num { color: var(--red); }
.stat-unknown .stat-num { color: #6e7681; }

/* Section Title */
.section-title {
    margin: 24px 0 12px; font-size: 14px; color: var(--head); font-weight: 600;
    border-bottom: 1px solid var(--border); padding-bottom: 6px;
}

/* Tables & Wrappers */
.table-wrap { 
    overflow-x: auto; 
    margin-bottom: 16px; 
    border: 1px solid var(--border); 
    border-radius: 6px; 
    max-height: 420px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}
.table { width: 100%; border-collapse: collapse; white-space: nowrap; }
.table th {
    background: #21262d; border-bottom: 1px solid var(--border);
    padding: 10px 12px; text-align: left; font-size: 11px; color: #8b949e;
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.4px;
    position: sticky; top: 0; z-index: 5;
}
.table td { padding: 9px 12px; border-bottom: 1px solid var(--border); font-size: 12px; color: var(--text); }
.table tr:last-child td { border-bottom: none; }
.table tr:hover { background: rgba(255,255,255,0.03); }
.table a { color: var(--head); text-decoration: none; font-weight: 500; }
.table a:hover { text-decoration: underline; }

/* Badges */
.badge {
    display: inline-block; padding: 3px 8px; font-size: 10px; font-weight: 600;
    border-radius: 3px; letter-spacing: 0.5px; text-transform: uppercase;
    text-align: center;
}
.badge-up { background: rgba(35,134,54,0.25); color: #3fb950; }
.badge-down { background: rgba(218,54,51,0.25); color: #f85149; }
.badge-unknown { background: rgba(110,118,129,0.2); color: #8b949e; }
.badge-warning { background: rgba(210,153,29,0.2); color: var(--yellow); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 6px 14px; background: var(--bg3); border: 1px solid var(--border);
    border-radius: 4px; color: var(--text); text-decoration: none; font-size: 12px;
    font-weight: 500; cursor: pointer; font-family: var(--font);
    white-space: nowrap; transition: background 0.15s ease;
}
.btn:hover { background: #30363d; }
.btn-primary { background: var(--green); border-color: var(--green); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #2ea043; }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; font-weight: 600; }
.btn-danger:hover { background: #e55c5c; }
.btn-small { padding: 4px 10px; font-size: 11px; border-radius: 3px; }
.btn-block { display: flex; width: 100%; text-align: center; }
.actions { margin-bottom: 16px; display: flex; gap: 8px; flex-wrap: wrap; }

/* Forms & Cards */
.form-card, .card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: 6px;
    padding: 20px; margin: 12px 0; width: 100%; max-width: 600px;
}
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 4px;
    background: var(--bg); color: var(--text); font-family: var(--font); font-size: 13px;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--head); box-shadow: 0 0 0 2px rgba(88,166,255,0.15);
}
.form-group textarea { resize: vertical; min-height: 70px; }
.help { font-size: 11px; color: #8b949e; margin: 6px 0; }

/* Flash Alerts */
.flash-area { display: flex; flex-direction: column; margin-bottom: 16px; }
.flash { padding: 10px 14px; border-radius: 4px; margin-bottom: 6px; font-size: 13px; font-weight: 500; border: 1px solid; }
.flash-success { background: rgba(35,134,54,0.15); border-color: rgba(35,134,54,0.4); color: #3fb950; }
.flash-danger { background: rgba(218,54,51,0.15); border-color: rgba(218,54,51,0.4); color: #f85149; }
.flash-warning { background: rgba(210,153,29,0.12); border-color: rgba(210,153,29,0.4); color: var(--yellow); }
.flash-info { background: rgba(88,166,255,0.1); border-color: rgba(88,166,255,0.3); color: var(--head); }

/* Login Page */
.login-page { 
    display: flex; align-items: center; justify-content: center; 
    min-height: 100vh; padding: 20px; background: var(--bg); 
}
.login-box {
    background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
    padding: 30px 24px; width: 100%; max-width: 360px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.login-box h1 { font-size: 22px; color: var(--green); text-align: center; font-weight: 700; word-break: break-word; }
.login-box .sub { font-size: 11px; color: #6e7681; text-align: center; margin-bottom: 20px; letter-spacing: 1px; text-transform: uppercase; }
.login-box input[type="text"], .login-box input[type="password"] {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 4px;
    background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px;
    margin-bottom: 14px;
}
.login-box input:focus { outline: none; border-color: var(--head); box-shadow: 0 0 0 2px rgba(88,166,255,0.15); }
.login-box label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 5px; text-align: left; }
.login-hint { font-size: 11px; color: #6e7681; text-align: center; margin-top: 14px; }

/* Tabs Responsive */
.tabs { 
    display: flex; 
    gap: 4px; 
    border-bottom: 1px solid var(--border); 
    margin-bottom: 16px; 
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 1px;
}
.tabs .tab {
    padding: 8px 16px; background: var(--bg2); color: var(--text); border: 1px solid var(--border);
    border-bottom: none; border-radius: 4px 4px 0 0; text-decoration: none; font-weight: 600; font-size: 12px;
    flex-shrink: 0;
}
.tabs .tab:hover { background: var(--bg3); }
.tabs .tab.active { background: var(--green); color: #fff; border-color: var(--green); }
.tab-panel { display: none; }

/* Chart Cards */
.chart-box { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }
.chart-card {
    flex: 1; min-width: 280px; background: var(--bg2); border: 1px solid var(--border);
    border-radius: 6px; padding: 14px;
}
.chart-card h4 { font-size: 12px; color: #8b949e; margin-bottom: 10px; font-weight: 600; }
.chart-card canvas { max-height: 220px; width: 100% !important; }

/* Table Filter Search */
.tf-search {
    width: 100%; padding: 8px 12px; margin-bottom: 10px;
    border: 1px solid var(--border); border-radius: 4px;
    background: var(--bg); color: var(--text); font-family: var(--font); font-size: 13px;
}
.tf-search:focus { outline: none; border-color: var(--head); box-shadow: 0 0 0 2px rgba(88,166,255,0.15); }
.tf-sortable { user-select: none; }
.tf-sortable:hover { background: #2b3138; }
.tf-sortable.tf-asc::after { content: " ▲"; font-size: 9px; color: var(--head); }
.tf-sortable.tf-desc::after { content: " ▼"; font-size: 9px; color: var(--head); }

/* Backdrop & Mobile Drawer Styles */
.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 998;
    backdrop-filter: blur(2px);
}
.sidebar-backdrop.active { display: block; }

/* ====================================================
   MOBILE & TABLET RESPONSIVE RULES (<= 768px)
   ==================================================== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 260px;
        transform: translateX(-100%);
        box-shadow: 4px 0 16px rgba(0,0,0,0.5);
        z-index: 999;
    }
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    .mobile-close-btn {
        display: block;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .topbar {
        padding: 10px 14px;
    }
    .topbar-left {
        gap: 10px;
    }
    .topbar-right {
        width: 100%;
        justify-content: space-between;
        margin-top: 8px;
        padding-top: 8px;
        border-top: 1px dashed var(--border);
    }
    .content {
        padding: 14px;
    }
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .stat-card {
        padding: 12px;
    }
    .stat-num {
        font-size: 22px;
    }
    .actions {
        flex-direction: column;
        align-items: stretch;
    }
    .actions .btn {
        width: 100%;
    }
    .chart-card {
        min-width: 100%;
    }
    .form-card, .card {
        padding: 14px;
        max-width: 100%;
    }
    /* Fixed modal responsive centering */
    #edit-modal, #edit-user-modal {
        width: 92% !important;
        max-width: 480px !important;
        left: 4% !important;
        transform: none !important;
        top: 10% !important;
    }
}

@media (max-width: 480px) {
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .user-chip {
        width: 100%;
        text-align: center;
        margin-bottom: 4px;
    }
    .user-actions {
        width: 100%;
        justify-content: space-between;
    }
    .user-actions .btn {
        flex: 1;
        text-align: center;
    }
}