:root {
    --bg: #f6f8fc;
    --surface: #ffffff;
    --surface-2: #f9fbff;
    --line: #dbe4f0;
    --line-strong: #b9c8dc;
    --text: #102033;
    --muted: #66758a;
    --cyan: #00a0e4;
    --cyan-dark: #0477ad;
    --green: #15a86d;
    --amber: #d98a12;
    --red: #df3f4b;
    --ink: #16263a;
    --shadow: 0 18px 45px rgba(18, 38, 63, .08);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100%;
    margin: 0;
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background:
        linear-gradient(rgba(0, 160, 228, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 160, 228, .05) 1px, transparent 1px),
        radial-gradient(circle at top left, rgba(21, 168, 109, .12), transparent 32rem),
        var(--bg);
    background-size: 28px 28px, 28px 28px, auto, auto;
}

a {
    color: inherit;
}

code {
    padding: 2px 5px;
    border-radius: 6px;
    background: #edf4fb;
    color: var(--cyan-dark);
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 22px;
    padding: 22px 18px;
    border-right: 1px solid var(--line);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(18px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--cyan), var(--green));
    color: #fff;
    font-weight: 800;
    letter-spacing: 0;
    box-shadow: 0 10px 24px rgba(0, 160, 228, .24);
}

.brand strong,
.brand small {
    display: block;
}

.brand strong {
    font-size: 16px;
}

.brand small {
    margin-top: 2px;
    color: var(--muted);
    font-size: 12px;
}

.nav-list {
    display: grid;
    gap: 7px;
}

.nav-item {
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 11px;
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--muted);
    text-decoration: none;
    font-weight: 650;
}

.nav-item:hover,
.nav-item.is-active {
    color: var(--text);
    border-color: rgba(0, 160, 228, .22);
    background: #f3f9ff;
}

.nav-icon {
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    color: var(--cyan-dark);
}

.sidebar-foot {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 9px;
    color: var(--muted);
    font-size: 13px;
}

.pulse-dot {
    width: 9px;
    height: 9px;
    border-radius: 999px;
    background: var(--green);
    box-shadow: 0 0 0 6px rgba(21, 168, 109, .12);
}

.main {
    min-width: 0;
    padding: 28px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 18px;
    margin: 0 auto 24px;
    max-width: 1180px;
}

.topbar h1 {
    margin: 0;
    font-size: clamp(28px, 4vw, 48px);
    line-height: 1.02;
    letter-spacing: 0;
}

.topbar p {
    max-width: 760px;
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 16px;
}

.eyebrow {
    margin: 0 0 8px !important;
    color: var(--cyan-dark) !important;
    font-size: 12px !important;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.icon-button {
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    color: var(--cyan-dark);
    text-decoration: none;
    box-shadow: var(--shadow);
}

.content {
    max-width: 1180px;
    margin: 0 auto;
}

.hero-grid,
.tool-grid,
.metric-grid {
    display: grid;
    gap: 14px;
}

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

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

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

.panel,
.tool-card,
.metric,
.notice {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, .92);
    box-shadow: var(--shadow);
}

.panel {
    padding: 18px;
}

.tool-card {
    min-height: 220px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px;
    text-decoration: none;
}

.tool-card:hover {
    border-color: rgba(0, 160, 228, .44);
    transform: translateY(-1px);
}

.tool-card h2,
.panel h2 {
    margin: 0;
    font-size: 18px;
    letter-spacing: 0;
}

.tool-card p,
.panel p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.tool-icon {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 8px;
    background: #eef8ff;
    color: var(--cyan-dark);
    font-size: 24px;
}

.tool-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: var(--muted);
    font-size: 13px;
}

.metric {
    padding: 14px;
}

.metric span {
    display: block;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.metric strong {
    display: block;
    margin-top: 6px;
    font-size: 26px;
}

.section-stack {
    display: grid;
    gap: 16px;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, .9fr);
    gap: 16px;
    align-items: start;
}

.form-grid {
    display: grid;
    gap: 13px;
}

.field {
    display: grid;
    gap: 7px;
}

.field label {
    color: var(--ink);
    font-size: 13px;
    font-weight: 750;
}

.input,
.select {
    width: 100%;
    min-height: 43px;
    padding: 10px 12px;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

.input:focus,
.select:focus {
    border-color: var(--cyan);
    outline: 3px solid rgba(0, 160, 228, .14);
}

.check-line {
    display: flex;
    gap: 9px;
    align-items: center;
    color: var(--muted);
}

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

.button {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: var(--cyan);
    color: #fff;
    font: inherit;
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
}

.button:hover {
    background: var(--cyan-dark);
}

.button.secondary {
    border-color: var(--line-strong);
    background: #fff;
    color: var(--text);
}

.button.secondary:hover {
    border-color: var(--cyan);
    color: var(--cyan-dark);
}

.notice {
    padding: 13px 14px;
    margin-bottom: 14px;
    color: var(--text);
}

.notice-ok {
    border-color: rgba(21, 168, 109, .28);
    background: #f0fbf6;
}

.notice-warn {
    border-color: rgba(217, 138, 18, .28);
    background: #fff8ea;
}

.notice-error {
    border-color: rgba(223, 63, 75, .28);
    background: #fff1f2;
}

.data-list {
    display: grid;
    gap: 10px;
    margin: 0;
}

.data-row {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--line);
}

.data-row:last-child {
    border-bottom: 0;
}

.data-row dt {
    color: var(--muted);
    font-weight: 700;
}

.data-row dd {
    margin: 0;
    min-width: 0;
    overflow-wrap: anywhere;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 4px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 800;
}

.badge-ok {
    background: rgba(21, 168, 109, .12);
    color: #087348;
}

.badge-warn {
    background: rgba(217, 138, 18, .14);
    color: #8a5509;
}

.badge-alert {
    background: rgba(223, 63, 75, .12);
    color: #aa1f2b;
}

.table-wrap {
    overflow-x: auto;
}

.status-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 780px;
}

.status-table th,
.status-table td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.status-table th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

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

.mini {
    font-size: 12px;
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .nav-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-grid,
    .tool-grid,
    .metric-grid,
    .split {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 620px) {
    .main {
        padding: 18px;
    }

    .topbar {
        align-items: stretch;
    }

    .nav-list {
        grid-template-columns: 1fr;
    }

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