:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #111827;
    --muted: #667085;
    --line: #e5e7eb;
    --brand: #2563eb;
    --brand-dark: #1d4ed8;
    --danger: #b42318;
    --success: #027a48;
    --sidebar: #0f172a;
    --soft: #f1f5f9;
    --shadow: 0 14px 40px rgba(15, 23, 42, .08);
    --shadow-soft: 0 8px 24px rgba(15, 23, 42, .06);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, .08), transparent 32%),
        linear-gradient(180deg, #f8fafc 0%, var(--bg) 100%);
    color: var(--text);
    font: 14px/1.5 Arial, "Microsoft YaHei", sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
.button,
input,
select {
    min-height: 38px;
    border-radius: 10px;
    font: inherit;
}

input,
select {
    width: 100%;
    border: 1px solid var(--line);
    background: #fff;
    padding: 9px 11px;
    outline: none;
}

input:focus,
select:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(15, 118, 110, .12);
}

button,
.button {
    border: 0;
    background: var(--brand);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 13px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 8px 16px rgba(37, 99, 235, .14);
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}

button:hover,
.button:hover {
    background: var(--brand-dark);
    transform: translateY(-1px);
    box-shadow: 0 12px 22px rgba(37, 99, 235, .2);
}

button:disabled {
    cursor: not-allowed;
    opacity: .55;
}

.danger {
    background: var(--danger);
    box-shadow: 0 8px 16px rgba(180, 35, 24, .12);
}

.danger:hover {
    background: #7a271a;
}

.small {
    min-height: 32px;
    padding: 6px 10px;
    border-radius: 9px;
    font-size: 13px;
}

.secondary {
    background: #eef2ff;
    color: #1e3a8a;
    box-shadow: none;
}

.secondary:hover {
    background: #dbeafe;
    color: #1d4ed8;
}

.ghost {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
}

.ghost:hover {
    background: var(--soft);
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 260px;
    background:
        linear-gradient(180deg, rgba(15, 23, 42, .98), rgba(17, 24, 39, .98));
    color: #fff;
    padding: 22px 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #60a5fa, #22d3ee);
    color: #082f49;
    font-weight: 900;
}

.brand small,
.nav a,
.eyebrow,
.hint,
.empty,
small {
    color: var(--muted);
}

.sidebar .brand small,
.sidebar .nav a {
    color: #cbd5e1;
}

.nav {
    display: grid;
    gap: 6px;
}

.nav a {
    padding: 10px 12px;
    border-radius: 10px;
}

.nav a.active,
.nav a:hover {
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

.app-main {
    margin-left: 260px;
    padding: 30px;
}

.auth-main {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.app-header h1,
.panel h2,
.auth-card h1,
.instance-card h3 {
    margin: 0;
}

.eyebrow {
    margin: 0 0 4px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-chip {
    border: 1px solid var(--line);
    background: #fff;
    border-radius: 999px;
    padding: 8px 12px;
    box-shadow: var(--shadow-soft);
}

.auth-card {
    width: min(900px, 100%);
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(15, 23, 42, .08);
}

.auth-copy {
    background: #111827;
    color: #fff;
    padding: 48px;
    display: grid;
    align-content: center;
    gap: 16px;
}

.auth-copy p {
    color: #cbd5e1;
    max-width: 360px;
}

.form-card,
.form-grid {
    display: grid;
    gap: 12px;
}

.form-card {
    padding: 48px;
    align-content: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.stat-card,
.panel,
.instance-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow-soft);
}

.stat-card {
    padding: 18px;
}

.stat-card span {
    color: var(--muted);
}

.stat-card strong {
    display: block;
    margin-top: 8px;
    font-size: 30px;
}

.panel {
    padding: 20px;
    margin-bottom: 18px;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.page-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 5;
    backdrop-filter: blur(12px);
}

.work-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.compact {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.instance-form {
    grid-template-columns: repeat(6, minmax(0, 1fr)) 120px;
    margin-bottom: 16px;
}

.instance-create-form {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    margin-bottom: 16px;
}

.soft-form {
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
}

.account-grid,
.user-list {
    display: grid;
    gap: 14px;
}

.account-card,
.user-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 16px;
    background: #fff;
}

.card-title {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 14px;
}

.card-title h3 {
    margin: 0;
}

.card-title p {
    margin: 4px 0 0;
    color: var(--muted);
}

.account-edit-row {
    grid-template-columns: 1.2fr 1fr 1fr 1.4fr 1.2fr 86px;
}

.account-form {
    grid-template-columns: repeat(4, minmax(0, 1fr)) 120px;
}

.quota-list {
    background: var(--soft);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 12px;
}

.data-list,
.edit-list,
.log-list {
    display: grid;
    gap: 8px;
    margin-top: 14px;
}

.data-row,
.edit-row,
.log-row,
.assign-row,
.table-row {
    display: grid;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--line);
    padding: 12px 0;
}

.data-row {
    grid-template-columns: 1fr 120px;
}

.table-row {
    grid-template-columns: 1fr 1fr 1.5fr 1fr 100px;
}

.instance-row {
    grid-template-columns: 1fr 1fr 1fr 1.4fr 1fr 1.4fr 86px;
}

.profile-row {
    grid-template-columns: 1fr 1fr 1.4fr 1.2fr 86px;
}

.account-row {
    grid-template-columns: 1.2fr 1fr 1.6fr 1fr 150px;
}

.user-row {
    grid-template-columns: 1fr 110px 100px 340px;
}

.action-row {
    background: #fbfcfe;
    padding-left: 10px;
    padding-right: 10px;
    border-radius: 8px;
}

.row-actions {
    display: flex;
    align-items: center;
}

.table-head {
    color: var(--muted);
    font-weight: 700;
    border-top: 0;
    padding-top: 0;
    font-size: 12px;
    text-transform: uppercase;
}

.assign-row {
    grid-template-columns: 160px 1fr 110px;
}

.checks,
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.checks label,
.tag-list span {
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 7px 10px;
}

.checks input {
    width: auto;
    min-height: auto;
    margin-right: 6px;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.row-actions-four {
    display: grid;
    grid-template-columns: repeat(4, minmax(76px, 1fr));
    gap: 8px;
    align-items: center;
}

.row-actions-four form,
.row-actions-four button {
    width: 100%;
}

.state {
    border-radius: 999px;
    padding: 5px 10px;
    background: var(--soft);
    color: var(--muted);
    font-size: 12px;
    font-weight: 800;
}

.state.running {
    background: #dcfae6;
    color: var(--success);
}

.state.stopped,
.state.terminated,
.state.paused {
    background: #fee4e2;
    color: var(--danger);
}

.assignment-grid {
    display: grid;
    gap: 10px;
}

.assignment-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr 160px;
    gap: 10px;
    align-items: center;
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px;
}

.assignment-item.clean {
    grid-template-columns: 1.25fr 120px 1fr 150px 90px;
    background: #fff;
    box-shadow: inset 0 0 0 1px rgba(226, 232, 240, .9);
}

.assign-check,
.assign-ip {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.assignment-item input[type="checkbox"] {
    width: auto;
    min-height: auto;
    margin-right: 6px;
}

.modal[hidden] {
    display: none;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 20px;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(17, 24, 39, .45);
}

.modal-panel {
    position: relative;
    width: min(680px, 100%);
    background: #fff;
    border-radius: 18px;
    padding: 20px;
    border: 1px solid var(--line);
    box-shadow: 0 30px 90px rgba(15, 23, 42, .24);
}

.modal-panel.wide {
    width: min(980px, 100%);
}

.instance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.modern-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.instance-card {
    padding: 18px;
    display: grid;
    gap: 14px;
}

.modern-instance {
    min-height: 230px;
    align-content: start;
    transition: transform .16s ease, box-shadow .16s ease;
}

.modern-instance:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.instance-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.ip-display {
    display: grid;
    gap: 6px;
    background: #f8fafc;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
}

.ip-display span,
.instance-meta span {
    color: var(--muted);
}

.ip-display strong {
    font-size: 22px;
    word-break: break-all;
}

.instance-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
}

.instance-actions {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 7px;
}

.instance-actions form,
.instance-actions button {
    width: 100%;
}

.user-actions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.instance-card.is-disabled {
    opacity: .72;
}

.instance-card p {
    margin: 4px 0 0;
    color: var(--muted);
}

dl {
    display: grid;
    gap: 8px;
    margin: 0;
}

dl div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

dt {
    color: var(--muted);
}

dd {
    margin: 0;
    font-weight: 700;
    word-break: break-all;
}

code {
    background: var(--soft);
    border: 1px solid var(--line);
    border-radius: 7px;
    padding: 3px 6px;
    word-break: break-all;
}

.api-box {
    display: grid;
    gap: 6px;
}

.api-box span {
    color: var(--muted);
    font-weight: 700;
}

.api-box code {
    display: block;
    padding: 10px;
}

.log-row {
    grid-template-columns: 60px 220px 1fr;
}

.log-row > span {
    text-align: center;
    border-radius: 999px;
    padding: 4px 8px;
    font-weight: 800;
    font-size: 12px;
}

.log-row.ok > span {
    background: #dcfae6;
    color: var(--success);
}

.log-row.fail > span {
    background: #fee4e2;
    color: var(--danger);
}

.flash {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 18px;
    border: 1px solid var(--line);
}

.flash.success {
    background: #ecfdf3;
    color: var(--success);
}

.flash.error {
    background: #fef3f2;
    color: var(--danger);
}

@media (max-width: 1100px) {
    .stats-grid,
    .work-grid,
    .compact,
    .instance-form {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 760px) {
    .sidebar {
        position: static;
        width: auto;
    }

    .app-main {
        margin-left: 0;
        padding: 18px;
    }

    .app-header,
    .header-actions {
        align-items: flex-start;
        flex-direction: column;
    }

    .auth-card,
    .stats-grid,
    .work-grid,
    .compact,
    .instance-form,
    .instance-create-form,
    .page-toolbar,
    .table-row,
    .edit-row,
    .instance-row,
    .profile-row,
    .account-row,
    .user-row,
    .account-edit-row,
    .assignment-item,
    .assign-row,
    .log-row {
        grid-template-columns: 1fr;
    }

    .page-toolbar,
    .instance-main {
        align-items: stretch;
        flex-direction: column;
    }

    .instance-actions,
    .user-actions,
    .row-actions-four {
        grid-template-columns: 1fr 1fr;
    }

    .auth-copy,
    .form-card {
        padding: 28px;
    }
}