html,
body {
    margin: 0;
    min-height: 100%;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f4f6f9;
    color: #172033;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
}

button,
input,
select,
textarea {
    font: inherit;
}

a {
    color: inherit;
}

.opsstone-brand {
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.muted {
    color: #647084;
}

.app-shell {
    min-height: 100vh;
}

.app-header {
    min-height: 72px;
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    background: #fff;
    border-bottom: 1px solid #e3e8ef;
}

.app-header__brand-block {
    display: flex;
    align-items: center;
    gap: 30px;
    min-width: 0;
}

.brand-link {
    color: inherit;
    text-decoration: none;
    flex: 0 0 auto;
}

.app-header__subtitle {
    margin-top: 4px;
    color: #788497;
    font-size: 13px;
}

.app-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.app-nav a {
    padding: 9px 11px;
    color: #566276;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 650;
}

.app-nav a:hover,
.app-nav a.active {
    background: #f1f4f8;
    color: #172033;
}

.app-header__user {
    display: flex;
    align-items: center;
    gap: 18px;
}

.app-header__user > div {
    display: grid;
    text-align: right;
}

.app-header__user span {
    color: #788497;
    font-size: 12px;
}

.app-main {
    min-height: calc(100vh - 72px);
}

.opsstone-page {
    padding: 40px;
}

.opsstone-page--wide {
    max-width: 1500px;
    margin: 0 auto;
}

.page-heading {
    margin: 0 auto 22px;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
}

.page-heading h1 {
    margin: 9px 0 6px;
    font-size: 32px;
}

.page-heading p {
    margin: 0;
}

.tenant-key {
    max-width: 430px;
    padding: 10px 12px;
    display: grid;
    gap: 4px;
    background: #fff;
    border: 1px solid #e1e6ed;
    border-radius: 10px;
}

.tenant-key span {
    color: #788497;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.tenant-key code {
    overflow-wrap: anywhere;
}

.opsstone-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 38px;
    background: #fff;
    border: 1px solid #e1e6ed;
    border-radius: 16px;
    box-shadow: 0 12px 38px rgba(23, 32, 51, .06);
}

.opsstone-card h1,
.auth-card h1 {
    margin: 12px 0 10px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.settings-card,
.module-section,
.table-card {
    max-width: none;
    margin: 0;
}

.module-section,
.table-card {
    margin-top: 20px;
}

.section-heading {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
}

.section-heading h2 {
    margin: 0 0 6px;
    font-size: 20px;
}

.section-heading p {
    margin: 0;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 16px;
}

.field--wide {
    grid-column: 1 / -1;
}

.card-actions {
    margin-top: 24px;
    display: flex;
    justify-content: flex-end;
}

.status-grid {
    margin-top: 28px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.status-grid--wide {
    margin-top: 0;
}

.status-item {
    padding: 16px;
    display: grid;
    gap: 6px;
    background: #fff;
    border: 1px solid #e2e7ee;
    border-radius: 10px;
}

.status-item span {
    color: #788497;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.home-action-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.home-action-card {
    padding: 22px;
    display: grid;
    gap: 8px;
    background: #fff;
    border: 1px solid #e1e6ed;
    border-radius: 12px;
    text-decoration: none;
}

.home-action-card:hover {
    border-color: #bdc7d4;
    box-shadow: 0 8px 24px rgba(23, 32, 51, .06);
}

.home-action-card span {
    color: #647084;
    line-height: 1.45;
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
}

.module-card {
    padding: 18px;
    border: 1px solid #e0e5ec;
    border-radius: 12px;
    background: #fafbfd;
}

.module-card--enabled {
    background: #fff;
    border-color: #cbd6cf;
}

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

.module-card h3 {
    margin: 0 0 3px;
    font-size: 16px;
}

.module-card p {
    min-height: 62px;
    color: #647084;
    line-height: 1.45;
    font-size: 13px;
}

.module-code {
    color: #8a95a7;
    font-family: Consolas, "Courier New", monospace;
    font-size: 11px;
}

.status-pill {
    padding: 5px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    white-space: nowrap;
}

.status-pill--enabled {
    background: #eaf5ed;
    color: #25613a;
}

.status-pill--disabled {
    background: #eef1f5;
    color: #647084;
}

.module-meta {
    margin: 16px 0;
    display: grid;
    gap: 6px;
}

.module-meta div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.module-meta dt,
.module-meta dd {
    margin: 0;
    font-size: 12px;
}

.module-meta dt {
    color: #788497;
}

.module-meta dd {
    font-weight: 700;
}

.auth-page {
    min-height: 100vh;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-card {
    width: 100%;
    max-width: 430px;
    padding: 38px;
    background: #fff;
    border: 1px solid #e1e6ed;
    border-radius: 16px;
    box-shadow: 0 18px 50px rgba(23, 32, 51, .09);
}

.field {
    margin-top: 18px;
    display: grid;
    gap: 7px;
}

.field label {
    font-size: 13px;
    font-weight: 700;
}

.field small {
    color: #7b8799;
}

.input {
    width: 100%;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #ccd4df;
    border-radius: 8px;
    background: #fff;
    outline: none;
}

.input:focus {
    border-color: #69778b;
    box-shadow: 0 0 0 3px rgba(105, 119, 139, .12);
}

.checkbox-row {
    margin: 18px 0;
    display: flex;
    align-items: center;
    gap: 9px;
    color: #566276;
    font-size: 14px;
}

.button {
    min-height: 40px;
    padding: 9px 15px;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
}

.button:disabled {
    cursor: wait;
    opacity: .65;
}

.button--primary {
    background: #172033;
    color: #fff;
}

.button--secondary {
    background: #fff;
    border-color: #ccd4df;
    color: #263248;
}

.button--full {
    width: 100%;
}

.alert {
    margin: 16px 0;
    padding: 12px 14px;
    border-radius: 8px;
    font-size: 14px;
}

.alert--error {
    border: 1px solid #e3b7b7;
    background: #fff5f5;
    color: #8b2e2e;
}

.alert--success {
    border: 1px solid #bfdbc7;
    background: #f2fbf5;
    color: #285e38;
}

.validation-message {
    color: #9b3030;
    font-size: 12px;
}

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th,
.data-table td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid #e7ebf0;
    vertical-align: top;
}

.data-table th {
    color: #647084;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

@media (max-width: 1000px) {
    .settings-grid {
        grid-template-columns: 1fr;
    }

    .app-header__brand-block {
        gap: 16px;
    }
}

@media (max-width: 780px) {
    .app-header {
        padding: 12px 16px;
        align-items: flex-start;
    }

    .app-header__brand-block {
        display: grid;
    }

    .app-nav {
        flex-wrap: wrap;
    }

    .app-header__user > div {
        display: none;
    }

    .page-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .field--wide {
        grid-column: auto;
    }

    .opsstone-page,
    .auth-page {
        padding: 18px;
    }

    .opsstone-card,
    .auth-card {
        padding: 24px;
    }
}

/* Mega Chunk 9.5 - workspace shell */
.app-shell--sidebar { display: grid; grid-template-columns: 248px minmax(0, 1fr); min-height: 100vh; }
.app-sidebar { position: sticky; top: 0; height: 100vh; padding: 24px 18px 18px; display: flex; flex-direction: column; background: #111827; color: #f8fafc; border-right: 1px solid #1f2937; }
.sidebar-brand { padding: 4px 10px 24px; display: grid; gap: 5px; text-decoration: none; }
.sidebar-brand small { color: #94a3b8; font-size: 12px; }
.sidebar-nav { display: grid; gap: 22px; }
.nav-group { display: grid; gap: 4px; }
.nav-group__label { padding: 0 10px 6px; color: #64748b; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.sidebar-nav a { padding: 9px 10px; color: #cbd5e1; text-decoration: none; border-radius: 8px; font-size: 14px; font-weight: 650; }
.sidebar-nav a:hover { background: #1f2937; color: #fff; }
.sidebar-nav a.active { background: #f8fafc; color: #111827; }
.sidebar-user { margin-top: auto; padding: 16px 10px 4px; display: grid; gap: 12px; border-top: 1px solid #273244; }
.sidebar-user > div { display: grid; gap: 3px; }
.sidebar-user strong { overflow: hidden; text-overflow: ellipsis; font-size: 13px; }
.sidebar-user span { color: #94a3b8; font-size: 11px; }
.sidebar-signout { padding: 7px 0; color: #cbd5e1; text-align: left; background: transparent; border: 0; cursor: pointer; }
.sidebar-signout:hover { color: #fff; }
.app-main--sidebar { min-width: 0; min-height: 100vh; }
.eyebrow { color: #64748b; font-size: 12px; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }
.eyebrow a { color: inherit; text-decoration: none; }
.heading-actions { display: flex; gap: 10px; align-items: center; }
.register-card { max-width: none; margin: 0; }
.context-notice { margin: 18px 0 24px; padding: 13px 15px; display: flex; gap: 10px; align-items: baseline; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 10px; color: #475569; font-size: 13px; }
.context-notice a { font-weight: 700; }
.readonly-field { min-height: 42px; padding: 10px 12px; background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 8px; font-weight: 650; }
.business-settings-hub { margin: 0 0 22px; }
.settings-hub-heading { margin-bottom: 12px; }
.settings-hub-heading h2 { margin: 0 0 4px; }
.settings-hub-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.settings-hub-grid a { min-height: 96px; padding: 17px; display: grid; align-content: center; gap: 5px; background: #fff; border: 1px solid #e1e6ed; border-radius: 12px; text-decoration: none; }
.settings-hub-grid a:hover { border-color: #94a3b8; box-shadow: 0 8px 24px rgba(23,32,51,.06); }
.settings-hub-grid span { color: #64748b; font-size: 13px; line-height: 1.4; }
.dashboard-welcome { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; margin-bottom: 18px; }
.dashboard-welcome > div { padding: 14px 16px; display: grid; gap: 4px; background: #fff; border: 1px solid #e2e8f0; border-radius: 10px; }
.dashboard-welcome span { color: #64748b; font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
.dashboard-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
.dashboard-card { min-height: 150px; padding: 22px; display: grid; align-content: start; gap: 7px; background: #fff; border: 1px solid #e1e6ed; border-radius: 14px; text-decoration: none; }
.dashboard-card:hover { border-color: #94a3b8; box-shadow: 0 10px 28px rgba(23,32,51,.06); }
.dashboard-card > span { color: #64748b; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.dashboard-card strong { font-size: 18px; }
.dashboard-card p { margin: 0; color: #64748b; line-height: 1.5; }
.dashboard-card--primary { background: #172033; color: #fff; border-color: #172033; }
.dashboard-card--primary > span, .dashboard-card--primary p { color: #cbd5e1; }
.dashboard-guidance { max-width: none; margin: 18px 0 0; padding: 24px; }
.workflow-strip { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.workflow-strip span { padding: 9px 12px; background: #f1f5f9; border-radius: 8px; font-weight: 700; }
.workflow-strip b { color: #94a3b8; }
@media (max-width: 1050px) { .app-shell--sidebar { grid-template-columns: 210px minmax(0,1fr); } .settings-hub-grid, .dashboard-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 760px) { .app-shell--sidebar { display: block; } .app-sidebar { position: static; width: 100%; height: auto; } .sidebar-nav { grid-template-columns: repeat(2,minmax(0,1fr)); } .sidebar-user { margin-top: 18px; } .opsstone-page { padding: 22px 16px; } .settings-hub-grid, .dashboard-grid, .dashboard-welcome { grid-template-columns: 1fr; } }

/* Mega Chunk 16 - Automation & communications */
.list-card--attention{border-left:4px solid currentColor}.list-card--vertical{display:block}.list-card--vertical .form-grid{margin-top:1rem}.input--tall{min-height:140px}.settings-link-card code{font-size:.85em}

/* Mobile 18.2 - live operational engineer map */
.live-engineer-layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(300px,.7fr);gap:16px;align-items:start}.live-engineer-map-surface{min-height:520px}.live-engineer-grid{min-height:390px;border:1px solid #dbe4ee;border-radius:18px;background:radial-gradient(circle at 20% 25%,#e0f2fe 0 2px,transparent 3px),radial-gradient(circle at 75% 60%,#dbeafe 0 2px,transparent 3px),linear-gradient(135deg,#f8fafc,#eef6f7);display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;padding:22px;align-content:center}.live-engineer-pin{border:1px solid #cbd5e1;background:#fff;border-radius:16px;padding:14px;text-align:left;display:grid;grid-template-columns:auto 1fr;column-gap:9px;row-gap:2px;box-shadow:0 8px 24px rgba(15,23,42,.08);cursor:pointer}.live-engineer-pin:hover{border-color:#0f766e;transform:translateY(-1px)}.live-engineer-pin__dot{width:12px;height:12px;border-radius:50%;background:#16a34a;grid-row:1/3;margin-top:4px;box-shadow:0 0 0 5px rgba(22,163,74,.12)}.live-engineer-pin.is-stale .live-engineer-pin__dot{background:#f59e0b;box-shadow:0 0 0 5px rgba(245,158,11,.14)}.live-engineer-pin small{color:#64748b}.map-privacy-note{margin-top:12px;padding:12px 14px;background:#f8fafc;border-radius:12px;color:#475569;font-size:.9rem}.detail-list{display:grid;gap:0;margin:16px 0}.detail-list>div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid #e2e8f0}.detail-list dt{color:#64748b}.detail-list dd{margin:0;font-weight:600}@media(max-width:900px){.live-engineer-layout{grid-template-columns:1fr}.live-engineer-map-surface{min-height:auto}}

.live-map-frame{width:100%;height:360px;border:1px solid #dbe4ee;border-radius:16px;margin-bottom:12px;background:#f8fafc}