/* ─── Reset & Base ──────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #0f1117;
    --bg-card: #1a1d27;
    --bg-hover: #22263a;
    --bg-input: #12151f;
    --border: #2a2f45;
    --accent: #4f8ef7;
    --accent-dim: #2a4a8a;
    --danger: #e05252;
    --danger-dim: #5a1f1f;
    --success: #3fc97e;
    --warning: #f0a04b;
    --text: #e4e8f5;
    --text-muted: #7a82a0;
    --sidebar-w: 230px;
    --header-h: 54px;
    --radius: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

html,
body {
    height: 100%;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

/* ─── Layout ────────────────────────────────────────────────── */
.layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
}

.sidebar-brand {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 18px;
    border-bottom: 1px solid var(--border);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.3px;
    color: var(--accent);
    flex-shrink: 0;
}
.sidebar-brand svg {
    flex-shrink: 0;
}

.sidebar-section-label {
    padding: 18px 18px 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 18px;
    cursor: pointer;
    border-radius: 0;
    color: var(--text-muted);
    transition:
        background 0.15s,
        color 0.15s;
    user-select: none;
    border-left: 3px solid transparent;
}
.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text);
}
.nav-item.active {
    background: var(--bg-hover);
    color: var(--accent);
    border-left-color: var(--accent);
}
.nav-item svg {
    flex-shrink: 0;
}

.sidebar-footer {
    margin-top: auto;
    padding: 14px 18px;
    border-top: 1px solid var(--border);
}
.sidebar-footer .nav-item {
    padding: 9px 0;
    border-left: none;
}

/* ─── Main ──────────────────────────────────────────────────── */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.topbar {
    height: var(--header-h);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    flex-shrink: 0;
    gap: 14px;
}
.topbar-title {
    font-size: 16px;
    font-weight: 600;
}
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.content {
    flex: 1;
    overflow-y: auto;
    padding: 28px;
}

/* ─── Section visibility ────────────────────────────────────── */
.section {
    display: none;
}
.section.active {
    display: block;
}

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    gap: 12px;
    flex-wrap: wrap;
}
.card-title {
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition:
        opacity 0.15s,
        background 0.15s;
    white-space: nowrap;
}
.btn:hover {
    opacity: 0.85;
}
.btn:active {
    opacity: 0.7;
}
.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-ghost {
    background: var(--bg-hover);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-success {
    background: var(--success);
    color: #000;
}
.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ─── Inputs ────────────────────────────────────────────────── */
.form-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
    min-width: 130px;
}
.form-group label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 8px 10px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.15s;
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
}
.form-group select option {
    background: var(--bg-card);
}

/* ─── Table ─────────────────────────────────────────────────── */
.table-wrap {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
thead tr {
    border-bottom: 2px solid var(--border);
}
tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.1s;
}
tbody tr:hover {
    background: var(--bg-hover);
}
th {
    padding: 9px 12px;
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-muted);
    white-space: nowrap;
}
td {
    padding: 11px 12px;
    vertical-align: middle;
}
td:last-child {
    white-space: nowrap;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.badge-a {
    background: #1a3a5c;
    color: #5fb3f5;
}
.badge-aaaa {
    background: #1a2f4c;
    color: #8ac8f8;
}
.badge-cname {
    background: #2a1f4a;
    color: #a888f8;
}
.badge-mx {
    background: #1f3a2a;
    color: #5fd89a;
}
.badge-txt {
    background: #3a2a1a;
    color: #f0b060;
}
.badge-ns {
    background: #3a1a2a;
    color: #f080b0;
}
.badge-other {
    background: #2a2a2a;
    color: #9090a0;
}
.badge-eu {
    background: #1a2f4c;
    color: #8ac8f8;
}
.badge-us {
    background: #1f3a2a;
    color: #5fd89a;
}
.badge-region {
    background: #2a2a2a;
    color: #9090a0;
}

.status-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    margin-right: 5px;
}
.dot-enabled {
    background: var(--success);
}
.dot-disabled {
    background: var(--danger);
}

/* ─── Toast ─────────────────────────────────────────────────── */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 9999;
}
.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: var(--radius);
    padding: 12px 18px;
    min-width: 260px;
    max-width: 380px;
    box-shadow: var(--shadow);
    animation: slideIn 0.2s ease;
    font-size: 13px;
}
.toast.toast-error {
    border-left-color: var(--danger);
}
.toast.toast-success {
    border-left-color: var(--success);
}
.toast.toast-warning {
    border-left-color: var(--warning);
}
@keyframes slideIn {
    from {
        transform: translateX(60px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ─── Modal ─────────────────────────────────────────────────── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
.modal-backdrop.open {
    opacity: 1;
    pointer-events: all;
}
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow);
    transform: translateY(20px);
    transition: transform 0.2s;
}
.modal-backdrop.open .modal {
    transform: translateY(0);
}
.modal-header {
    padding: 18px 22px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-title {
    font-size: 15px;
    font-weight: 600;
}
.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 20px;
    line-height: 1;
    padding: 2px 6px;
    border-radius: 4px;
}
.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text);
}
.modal-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.modal-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ─── Confirm dialog ────────────────────────────────────────── */
#confirm-backdrop .modal {
    max-width: 380px;
}

/* ─── Login modal ───────────────────────────────────────────── */
#login-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
}
#login-backdrop.hidden {
    display: none;
}
#login-modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 100%;
    max-width: 360px;
    box-shadow: var(--shadow);
}
.login-logo {
    text-align: center;
    padding: 28px 22px 6px;
}
.login-logo svg {
    color: var(--accent);
}
.login-logo h2 {
    margin-top: 10px;
    font-size: 17px;
    font-weight: 700;
    color: var(--accent);
}
.login-logo p {
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-muted);
}
#login-error {
    margin: 0 22px;
    padding: 8px 12px;
    background: var(--danger-dim);
    border: 1px solid var(--danger);
    border-radius: 6px;
    font-size: 12px;
    color: var(--danger);
    display: none;
}

/* ─── Settings ──────────────────────────────────────────────── */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
@media (max-width: 600px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── Empty state ───────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}
.empty-state svg {
    margin-bottom: 14px;
    opacity: 0.4;
}
.empty-state p {
    font-size: 14px;
}

/* ─── Spinner ───────────────────────────────────────────────── */
.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ─── Misc ──────────────────────────────────────────────────── */
.flex-gap {
    display: flex;
    align-items: center;
    gap: 8px;
}
.mono {
    font-family: "Cascadia Code", "Fira Code", monospace;
    font-size: 12px;
}
.text-muted {
    color: var(--text-muted);
}
hr.sep {
    border: none;
    border-top: 1px solid var(--border);
    margin: 10px 0;
}

/* ─── Server notebook tabs ────────────────────────────────── */
.server-tabs {
    display: flex;
    gap: 2px;
    padding: 0 2px;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
    overflow-x: auto;
}
.server-tab {
    padding: 8px 20px 10px;
    cursor: pointer;
    border: 1px solid transparent;
    border-bottom: 2px solid transparent;
    border-radius: 8px 8px 0 0;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    position: relative;
    bottom: -2px;
    user-select: none;
    transition:
        background 0.12s,
        color 0.12s,
        border-color 0.12s;
}
.server-tab:hover {
    background: var(--bg-hover);
    color: var(--text);
    border-color: var(--border);
    border-bottom-color: var(--bg-hover);
}
.server-tab.active {
    background: var(--bg);
    border-color: var(--border);
    border-bottom-color: var(--bg);
    color: var(--text);
}
.server-tab-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ─── Dashboard grid ──────────────────────────────────────── */
.dash-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}
@media (max-width: 900px) {
    .dash-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .dash-span-2 {
        grid-column: span 1;
    }
}
@media (max-width: 600px) {
    .dash-grid {
        grid-template-columns: 1fr;
    }
}
.dash-span-2 {
    grid-column: span 2;
}
.dash-span-3 {
    grid-column: 1 / -1;
}
.dash-grid .card {
    margin-bottom: 0;
}

/* ─── Progress bars ───────────────────────────────────────── */
.prog-wrap {
    background: var(--bg-input);
    border-radius: 4px;
    height: 6px;
    margin-top: 6px;
    overflow: hidden;
}
.prog-bar {
    height: 100%;
    border-radius: 4px;
    transition: width 0.4s ease;
    min-width: 2px;
}
.prog-low {
    background: var(--success);
}
.prog-mid {
    background: var(--warning);
}
.prog-high {
    background: var(--danger);
}

/* ─── Dashboard stat display ──────────────────────────────── */
.dash-stat {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.1;
}
.dash-stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.dash-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 10px;
}
.dash-kv {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    padding: 3px 0;
}
.dash-kv + .dash-kv {
    border-top: 1px solid var(--border);
}

/* ─── Status / risk badges (dashboard) ──────────────────────── */
.badge-green {
    background: #1c3a26;
    color: #5fd89a;
}
.badge-yellow {
    background: #372900;
    color: #f0b060;
}
.badge-red {
    background: #3a1515;
    color: #f07070;
}
.badge-low {
    background: #1c3a26;
    color: #5fd89a;
}
.badge-medium {
    background: #372900;
    color: #f0b060;
}
.badge-high {
    background: #3a1515;
    color: #f07070;
}

/* ─── Action advice items ─────────────────────────────────── */
.action-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 14px;
    background: var(--danger-dim);
    border: 1px solid var(--danger);
    border-radius: 6px;
    font-size: 13px;
    line-height: 1.5;
}
.action-item + .action-item {
    margin-top: 8px;
}
.action-item > svg {
    flex-shrink: 0;
    color: var(--danger);
    margin-top: 2px;
}
.action-ok {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--success);
}

/* ─── Security check rows ────────────────────────────────── */
.sec-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    padding: 3px 0;
}