:root {
    --ink: #15232d;
    --muted: #697985;
    --line: #dfe7eb;
    --line-soft: #edf1f3;
    --panel: #ffffff;
    --brand: #12627a;
    --brand-dark: #092f3e;
    --brand-deep: #071f2b;
    --accent: #1a9a79;
    --accent-soft: #e5f6f1;
    --danger: #c94646;
    --danger-soft: #fff0f0;
    --warning: #b8750b;
    --bg: #f4f7f8;
    --shadow: 0 10px 32px rgba(18, 44, 56, .07);
    font-family: Inter, "Segoe UI", Arial, sans-serif;
}

html { font-size: 15px; min-height: 100%; }
body { min-height: 100vh; margin: 0; color: var(--ink); background: var(--bg); }
a { color: var(--brand); }
.shell { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }

/* Application shell */
.admin-shell { min-height: 100vh; display: grid; grid-template-columns: 270px minmax(0, 1fr); }
.app-sidebar { position: sticky; top: 0; height: 100vh; padding: 22px 16px 16px; background: linear-gradient(180deg, var(--brand-dark), var(--brand-deep)); color: #fff; flex-direction: column; z-index: 10; }
.sidebar-brand { display: flex; align-items: center; gap: 11px; color: inherit; text-decoration: none; min-width: 0; }
.sidebar-brand:hover { color: inherit; }
.sidebar-brand > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.sidebar-brand strong { font-size: 1rem; line-height: 1.2; }
.sidebar-brand small { color: #9dc0cd; font-size: .72rem; margin-top: 2px; }
.brand-icon { display: inline-grid; place-items: center; flex: 0 0 auto; width: 38px; height: 38px; border-radius: 11px; color: #06362f; background: linear-gradient(145deg, #69dec0, #32b696); font-weight: 900; box-shadow: 0 6px 20px #041c2266; }
.side-navigation { display: flex; flex-direction: column; gap: 18px; margin-top: 28px; overflow-y: auto; padding-right: 2px; }
.nav-section { display: flex; flex-direction: column; gap: 5px; }
.nav-section-label { padding: 0 10px 5px; color: #789cab; font-size: .67rem; font-weight: 800; text-transform: uppercase; letter-spacing: .14em; }
.side-link { display: flex; align-items: center; gap: 11px; padding: 9px 10px; color: #c6d8de; text-decoration: none; border-radius: 10px; transition: background .16s ease, color .16s ease, transform .16s ease; }
.side-link:hover { color: #fff; background: #ffffff0d; transform: translateX(2px); }
.side-link.active { color: #fff; background: linear-gradient(90deg, #19836e80, #ffffff0a); box-shadow: inset 3px 0 #5dd9ba; }
.side-link > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.side-link strong { font-size: .88rem; font-weight: 650; }
.side-link small { color: #85a7b3; font-size: .68rem; margin-top: 1px; }
.nav-icon { display: grid; place-items: center; flex: 0 0 auto; width: 29px; height: 29px; border-radius: 8px; color: #9ed4c7; background: #ffffff0a; font-weight: 800; }
.nav-icon svg { width: 16px; height: 16px; fill: currentColor; }
.side-link.active .nav-icon { color: #8af0d6; background: #ffffff12; }
.sidebar-bottom { margin-top: auto; padding-top: 15px; border-top: 1px solid #ffffff14; }
.signed-in-user { display: flex; gap: 9px; align-items: center; margin-bottom: 10px; min-width: 0; }
.signed-in-user > span:last-child { display: flex; flex-direction: column; min-width: 0; }
.signed-in-user small { color: #789cab; font-size: .67rem; }
.signed-in-user strong { max-width: 165px; overflow: hidden; text-overflow: ellipsis; font-size: .76rem; white-space: nowrap; }
.user-avatar { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: #ffffff12; color: #75ddc2; font-weight: 800; }
.side-logout { width: 100%; padding: 8px 12px; border: 1px solid #ffffff1f; border-radius: 9px; color: #d5e2e7; background: transparent; font-size: .8rem; }
.side-logout:hover { color: #fff; background: #ffffff0d; }
.admin-workspace { min-width: 0; display: flex; min-height: 100vh; flex-direction: column; }
.admin-topbar { min-height: 68px; display: flex; align-items: center; gap: 14px; padding: 0 28px; background: #ffffffdd; border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 8; }
.admin-topbar > div { display: flex; flex-direction: column; }
.admin-topbar strong { font-size: .95rem; }
.topbar-kicker { color: var(--muted); font-size: .67rem; text-transform: uppercase; letter-spacing: .1em; }
.service-pill { margin-left: auto; display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px; border: 1px solid #cde3dc; border-radius: 999px; color: #286553; background: #f2fbf8; font-size: .73rem; font-weight: 650; }
.service-pill i { width: 7px; height: 7px; border-radius: 50%; background: #23a87f; box-shadow: 0 0 0 4px #23a87f1c; }
.service-pill.is-checking { color: #725719; border-color: #ead9a8; background: #fffaf0; }
.service-pill.is-checking i { background: #d49b27; box-shadow: 0 0 0 4px #d49b271c; }
.service-pill.is-unhealthy { color: #8f3030; border-color: #f0c8c8; background: #fff3f3; }
.service-pill.is-unhealthy i { background: #d04b4b; box-shadow: 0 0 0 4px #d04b4b1c; }
.mobile-menu-button { border: 0; background: transparent; color: var(--ink); font-size: 1.4rem; padding: 3px; }
.admin-content { width: min(1380px, calc(100% - 56px)); margin-inline: auto; padding: 34px 0 46px; flex: 1; }
.admin-footer { padding: 16px 28px; color: #84929a; border-top: 1px solid var(--line); font-size: .73rem; }
.mobile-sidebar { width: 285px !important; color: #fff; background: var(--brand-dark); }
.mobile-sidebar .offcanvas-header { border-bottom: 1px solid #ffffff14; }

/* Public and authentication pages */
.public-body { display: flex; min-height: 100vh; flex-direction: column; background: linear-gradient(180deg, #f7fafb, #f2f6f7); }
.public-header { background: #ffffffd9; border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.public-nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; }
.public-nav .sidebar-brand { color: var(--ink); }
.public-nav .sidebar-brand small { color: var(--muted); }
.public-nav nav { display: flex; align-items: center; gap: 18px; }
.public-nav nav > a:not(.btn) { color: var(--muted); text-decoration: none; font-size: .86rem; }
.public-content { padding-block: 44px; flex: 1; }
.app-footer { padding: 20px 0; color: #7c8990; border-top: 1px solid var(--line); background: #fff; font-size: .78rem; }

/* Typography and page framing */
.page-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.page-heading h1 { margin: .25rem 0 .35rem; font-size: clamp(1.75rem, 3vw, 2.25rem); letter-spacing: -.035em; }
.page-heading p, .panel-heading p { margin: 0; max-width: 720px; color: var(--muted); }
.eyebrow { color: #18836b; font-size: .67rem; font-weight: 800; text-transform: uppercase; letter-spacing: .14em; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.panel-heading h2 { margin: .28rem 0 .25rem; }

/* Surfaces */
.panel-card, .metric-card, .feature-grid article { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); }
.panel-card { padding: 23px; }
.panel-card h2 { font-size: 1.18rem; letter-spacing: -.015em; }
.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.metric-card { position: relative; overflow: hidden; padding: 19px 20px; }
.metric-card::after { content: ""; position: absolute; top: -18px; right: -18px; width: 65px; height: 65px; border-radius: 50%; background: var(--accent-soft); }
.metric-card span { color: var(--muted); font-size: .76rem; font-weight: 600; }
.metric-card strong { display: block; margin-top: .2rem; font-size: 1.85rem; letter-spacing: -.04em; }
.metric-link { color: inherit; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease; }
.metric-link:hover { color: inherit; transform: translateY(-2px); box-shadow: 0 14px 34px rgba(18, 44, 56, .11); }
.metric-link small { display: block; margin-top: .45rem; color: var(--brand); font-size: .7rem; font-weight: 700; }
.metric-card.positive::after { background: #dff5ea; }
.metric-card.attention { border-color: #e7c99b; background: #fffdf8; }
.metric-card.attention::after { background: #fff0d8; }
.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .8fr); gap: 18px; align-items: start; }
.onboarding-card { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 26px; padding: 23px 25px; border-radius: 16px; color: #fff; background: linear-gradient(125deg, var(--brand-dark), var(--brand)); box-shadow: var(--shadow); }
.onboarding-card h2 { margin: .2rem 0; font-size: 1.25rem; }
.onboarding-card p { margin: 0; color: #cde1e7; }
.onboarding-card .eyebrow { color: #83e6cd; }
.onboarding-steps { display: flex; gap: 10px; }
.onboarding-steps span { display: flex; align-items: center; gap: 7px; color: #d8e9ed; font-size: .74rem; white-space: nowrap; }
.onboarding-steps b { display: grid; place-items: center; width: 25px; height: 25px; border-radius: 50%; color: #07382f; background: #70dec3; }
.two-column { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(430px, 1.5fr); gap: 18px; align-items: start; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(170px, 1fr)); gap: 14px; }
.compact-grid { grid-template-columns: repeat(2, minmax(160px, 1fr)); }
.empty-state { padding: 60px 20px; text-align: center; }
.empty-state h3 { font-size: 1.1rem; }
.empty-state.small { padding: 25px 12px; }
.empty-icon { display: grid; place-items: center; width: 48px; height: 48px; margin: 0 auto 12px; border-radius: 14px; color: var(--brand); background: #e8f3f6; font: 800 .72rem Consolas, monospace; }
.compact-editor { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(420px, 1.3fr); align-items: end; gap: 30px; }
.compact-editor h2 { margin: .2rem 0; }
.inline-create-form { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 12px; }
.form-grid-action { display: flex; align-items: end; }

/* Forms and controls */
.form-label { margin-bottom: .4rem; color: #40515c; font-size: .78rem; font-weight: 650; }
.form-control, .form-select { min-height: 42px; border-color: #d6e0e5; border-radius: 9px; color: var(--ink); background-color: #fbfcfd; font-size: .88rem; }
.form-control:focus, .form-select:focus { border-color: #4da88f; box-shadow: 0 0 0 .22rem #1a9a791a; background: #fff; }
.form-control-sm { min-height: 35px; }
.btn { border-radius: 9px; font-weight: 650; font-size: .84rem; }
.btn-primary { border-color: var(--brand); background: var(--brand); box-shadow: 0 5px 14px #12627a26; }
.btn-primary:hover, .btn-primary:focus { border-color: #0d5065; background: #0d5065; }
.btn-danger { border-color: #c94e4e; background: #c94e4e; }
.btn-success { border-color: #24866d; background: #24866d; }
.btn-outline-primary { color: var(--brand); border-color: #b9d1d9; }
.btn-outline-primary:hover { border-color: var(--brand); background: var(--brand); }
.alert { border-radius: 12px; border-width: 1px; font-size: .86rem; }
.alert-info, .alert-primary { color: #175568; border-color: #c4e0e8; background: #edf8fb; }
.validation-summary-valid { display: none; }
.identity-badge { display: inline-flex; align-items: center; margin-left: .35rem; padding: .18rem .4rem; border-radius: 999px; color: #155f4c; background: #dff5ea; font: 800 .57rem/1 Consolas, monospace; letter-spacing: .04em; vertical-align: middle; }
.identity-badge-config { color: #175568; background: #e1f2f7; }
.field-help { display: block; margin: -.35rem 0 .75rem; color: var(--muted); font-size: .7rem; line-height: 1.35; }
.field-help code { color: var(--brand); font-size: .69rem; }

/* Tables and state */
.table { margin: 0; color: var(--ink); }
.table th { padding: .8rem .65rem; color: #71818b; border-color: var(--line); background: #f8fafb; font-size: .66rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; white-space: nowrap; }
.table td { padding: .82rem .65rem; border-color: var(--line-soft); vertical-align: middle; font-size: .82rem; }
.table tbody tr:hover { background: #f9fbfc; }
.empty-cell { padding: 34px !important; color: var(--muted); text-align: center; }
.mono { font-family: Consolas, "SFMono-Regular", monospace; }
.device-id { max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.status { display: inline-flex; align-items: center; padding: .28rem .58rem; border-radius: 999px; font-size: .65rem; font-weight: 850; letter-spacing: .04em; }
.status-active, .status-issued { color: #176b4d; background: #dff5ea; }
.status-trial { color: #245b9c; background: #e5eefc; }
.status-suspended { color: #8d5600; background: #fff0d8; }
.status-revoked, .status-rejected, .status-expired { color: #9b2929; background: #fde4e4; }
.action-row { display: flex; gap: 5px; flex-wrap: wrap; }
.action-row form { display: inline; }
.search-form { display: flex; gap: 8px; min-width: min(100%, 330px); }
.entity-list, .user-list { display: grid; gap: 8px; }
.entity-row, .user-row { display: grid; grid-template-columns: auto minmax(180px, 1fr) auto auto; align-items: center; gap: 16px; padding: 13px 14px; border: 1px solid var(--line-soft); border-radius: 12px; background: #fbfcfd; }
.entity-row:hover, .user-row:hover { border-color: #cadde3; background: #fff; }
.entity-avatar { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 11px; color: #11634f; background: #dff5ea; font-weight: 850; }
.entity-main h3 { margin: 0 0 2px; font-size: .92rem; }
.entity-main > span:not(.status) { color: var(--muted); font-size: .7rem; }
.entity-stat { display: flex; flex-direction: column; min-width: 72px; text-align: center; }
.entity-stat strong { font-size: 1.2rem; }
.entity-stat span { color: var(--muted); font-size: .65rem; }
.secret-card { margin-bottom: 18px; padding: 18px; border-radius: 13px; color: #fff; background: #12212a; }
.secret-card p { margin: .2rem 0 .8rem; color: #b9c8cf; }
.secret-card code { display: block; padding: 12px; border-radius: 8px; color: #8fe3ce; background: #071116; overflow-wrap: anywhere; }

/* Guided setup and managed installations */
.quick-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.quick-steps div { display: flex; align-items: center; gap: 10px; padding: 13px; border: 1px solid #c9e5dc; border-radius: 12px; background: linear-gradient(145deg, #f1fbf8, #e8f6f2); }
.quick-steps strong { display: grid; place-items: center; min-width: 28px; height: 28px; border-radius: 50%; color: #fff; background: var(--accent); box-shadow: 0 4px 10px #1a9a7933; }
.quick-steps span { font-size: .79rem; font-weight: 650; }
.developer-identity-note { display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px; border: 1px solid #c6e0e7; border-radius: 12px; color: #244f5c; background: #edf8fb; }
.developer-identity-note p { margin: .2rem 0 0; color: #52717b; font-size: .79rem; }
.developer-identity-note code { color: #0d5a70; font-family: Consolas, monospace; }
.identity-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; color: #fff; background: var(--brand); font: 800 .72rem Consolas, monospace; }
.installation-grid { display: grid; grid-template-columns: repeat(3, minmax(240px, 1fr)); gap: 14px; }
.installation-card, .gateway-card { position: relative; border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 13px; padding: 17px; background: #fbfcfc; transition: transform .15s ease, box-shadow .15s ease; }
.installation-card:hover, .gateway-card:hover { transform: translateY(-2px); box-shadow: 0 10px 24px #12212a12; }
.installation-card.is-off, .gateway-card.is-off { border-top-color: var(--danger); background: #fffafa; }
.installation-card h3, .gateway-card h3 { margin: .45rem 0; font-size: 1.08rem; }
.installation-card > p, .gateway-card > p { min-height: 52px; color: var(--muted); font-size: .82rem; }
.customer-name { min-height: 0 !important; margin: 0; }
.installation-card dl, .gateway-card dl { margin-bottom: 13px; font-size: .74rem; }
.installation-card dl div, .gateway-card dl div { display: flex; justify-content: space-between; gap: 8px; padding: .45rem 0; border-top: 1px solid var(--line); }
.installation-card dt, .gateway-card dt { color: var(--muted); font-weight: 500; }
.installation-card dd, .gateway-card dd { margin: 0; text-align: right; }
.gateway-grid { display: grid; grid-template-columns: repeat(4, minmax(205px, 1fr)); gap: 14px; }
.gateway-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.station-chip { display: inline-flex; padding: .23rem .46rem; border-radius: 6px; color: var(--brand); background: #e5f0f3; font: 700 .65rem Consolas, monospace; }
.power-state { padding: .28rem .58rem; border-radius: 999px; color: #176b4d; background: #dff5ea; font-size: .67rem; font-weight: 850; }
.is-off .power-state { color: #9b2929; background: #fde4e4; }
.toggle-form { display: grid; gap: 7px; }
.developer-values { margin: 0 0 13px; padding: 10px 11px; border: 1px solid #d7e6ea; border-radius: 9px; background: #f2f8fa; }
.developer-values > strong { display: block; margin-bottom: 5px; color: #315b67; font-size: .67rem; text-transform: uppercase; letter-spacing: .06em; }
.developer-values > div { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; font-size: .69rem; }
.developer-values > div span { color: var(--muted); }
.developer-values code { color: #0d5a70; font: 700 .69rem Consolas, monospace; text-align: right; overflow-wrap: anywhere; }
.developer-values small { display: block; margin-top: 5px; color: var(--muted); font-size: .64rem; line-height: 1.35; }
.filter-panel { padding: 17px 19px; }
.filter-grid { display: grid; grid-template-columns: minmax(260px, 1.4fr) minmax(180px, .8fr) minmax(180px, .8fr) auto; gap: 12px; align-items: end; }
.filter-grid.activity-filter { grid-template-columns: minmax(280px, 1.5fr) minmax(200px, .7fr) auto; }
.filter-action { display: flex; align-items: center; }
.results-heading { display: flex; justify-content: space-between; align-items: center; margin: 0 2px 13px; color: var(--muted); font-size: .76rem; }
.results-heading strong { color: var(--ink); }
.presence-legend { display: flex; gap: 14px; }
.presence-legend span { display: flex; align-items: center; gap: 5px; }
.presence-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #a7b2b8; box-shadow: 0 0 0 3px #a7b2b81c; }
.presence-dot.online { background: #1ca879; box-shadow: 0 0 0 3px #1ca8791c; }
.presence-dot.recent { background: #d39623; box-shadow: 0 0 0 3px #d396231c; }
.presence-dot.offline, .presence-dot.never { background: #8a9aa3; }
.presence-line { display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 7px; margin: 13px 0; padding: 9px 10px; border-radius: 9px; background: #f1f5f6; font-size: .7rem; }
.presence-line span { margin-left: auto; color: var(--muted); }
.clipped { display: block; max-width: 155px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr auto; gap: 7px; }
.card-actions form { display: contents; }
.btn-icon-danger { display: grid; place-items: center; width: 39px; border: 1px solid #efd0d0; border-radius: 9px; color: var(--danger); background: #fff; font-size: 1.2rem; }
.btn-icon-danger:hover { color: #fff; background: var(--danger); }
.pagination-wrap { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 22px; color: var(--muted); font-size: .76rem; }
.activity-list { display: grid; }
.activity-item { display: grid; grid-template-columns: auto 1fr; gap: 13px; padding: 14px 2px; border-top: 1px solid var(--line-soft); }
.activity-item:first-child { border-top: 0; }
.activity-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; color: #1c6553; background: #e0f4ec; font: 850 .65rem Consolas, monospace; }
.activity-mark.action-lock, .activity-mark.action-delete, .activity-mark.action-deactivate_user, .activity-mark.action-login_failed { color: #9b2929; background: #fde4e4; }
.activity-mark.action-download { color: #245b9c; background: #e5eefc; }
.activity-body > div { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; font-size: .82rem; }
.activity-body p { margin: .3rem 0; color: #52636d; font-size: .78rem; }
.activity-body small { color: #839098; font-size: .68rem; }
.activity-action { padding: .18rem .38rem; border-radius: 5px; color: var(--brand); background: #e7f1f4; font: 750 .61rem Consolas, monospace; }
.compact-activity > div { display: grid; grid-template-columns: auto 1fr; gap: 10px; padding: 10px 0; border-top: 1px solid var(--line-soft); }
.compact-activity > div:first-child { border-top: 0; }
.compact-activity p { display: flex; flex-direction: column; margin: 0; font-size: .76rem; }
.compact-activity p span, .compact-activity p small { color: var(--muted); }
.role-guide { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.role-guide article { display: flex; flex-direction: column; padding: 14px 16px; border: 1px solid #d7e5e9; border-radius: 12px; background: #f8fbfc; }
.role-guide strong { font-size: .8rem; }
.role-guide span { margin-top: 3px; color: var(--muted); font-size: .7rem; }
.user-avatar.large { width: 40px; height: 40px; border-radius: 11px; }
.user-role-form { display: flex; align-items: center; gap: 7px; }
.system-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.system-card { display: flex; gap: 14px; align-items: center; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.system-card span { color: var(--muted); font-size: .7rem; }
.system-card h2 { margin: 2px 0; font-size: 1rem; }
.system-card p { margin: 0; color: var(--muted); font-size: .7rem; }
.system-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; color: #175568; background: #e1f2f7; font: 850 .64rem Consolas, monospace; }
.system-icon.ok { color: #176b4d; background: #dff5ea; }
.system-icon.bad { color: #9b2929; background: #fde4e4; }
.checklist { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.checklist > div { display: flex; gap: 10px; padding: 13px; border: 1px solid var(--line-soft); border-radius: 11px; }
.checklist > div > span { color: var(--accent); font-weight: 900; }
.checklist p { display: flex; flex-direction: column; margin: 0; font-size: .78rem; }
.checklist small { margin-top: 3px; color: var(--muted); }
.modal-content { border: 0; border-radius: 16px; box-shadow: 0 24px 70px #061c2650; }
.modal-header, .modal-footer { border-color: var(--line-soft); }

/* Home, authentication and documentation */
.hero { display: grid; grid-template-columns: 1fr 280px; gap: 40px; align-items: center; padding: 58px; border-radius: 24px; color: #fff; background: radial-gradient(circle at 90% 10%, #1886a0, transparent 38%), linear-gradient(130deg, #082f3e, #105e72); box-shadow: 0 24px 60px #0a45552c; }
.hero .eyebrow { color: #8fe3ce; }
.hero h1 { max-width: 760px; margin: .45rem 0 1rem; font-size: clamp(2.1rem, 4vw, 3.5rem); line-height: 1.06; letter-spacing: -.045em; }
.hero p { max-width: 700px; color: #d9eef4; font-size: 1.05rem; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.signature-card { display: flex; flex-direction: column; padding: 24px; border: 1px solid #ffffff2e; border-radius: 17px; background: #ffffff12; backdrop-filter: blur(8px); }
.signature-card span, .signature-card small { color: #c7e4ec; }
.signature-card strong { margin: .25rem 0; font-size: 2rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 22px 0; }
.feature-grid article { padding: 22px; }
.feature-grid article > span { color: var(--accent); font-weight: 800; }
.feature-grid h2 { margin: .7rem 0; font-size: 1.15rem; }
.feature-grid p { margin: 0; color: var(--muted); }
.api-strip { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; padding: 22px; border: 1px solid #c5e2da; border-radius: 14px; background: var(--accent-soft); }
.api-strip h2 { margin: .35rem 0 0; font: 600 1rem Consolas, monospace; }
.api-strip p { margin: 0; color: #41655d; }
.auth-shell { min-height: 67vh; display: grid; place-items: center; }
.auth-card { width: min(440px, 100%); padding: 34px; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: 0 22px 60px #0d35401a; }
.auth-card h1 { margin: 10px 0 5px; text-align: center; font-size: 1.6rem; letter-spacing: -.03em; }
.auth-card > p { text-align: center; }
.brand-mark { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 15px; color: #fff; background: linear-gradient(145deg, var(--brand), var(--brand-dark)); font-size: 1.4rem; font-weight: 900; box-shadow: 0 10px 24px #12627a30; }
.setup-card .eyebrow { display: block; margin-bottom: .4rem; text-align: center; }
.docs-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 18px; align-items: start; }
.docs-nav { position: sticky; top: 90px; display: flex; flex-direction: column; gap: 7px; }
.docs-nav strong { margin-bottom: 5px; }
.docs-nav a { padding: .4rem .5rem; border-radius: 6px; color: var(--brand); text-decoration: none; }
.docs-nav a:hover { background: #e9f3f5; }
.docs-content { display: grid; gap: 18px; }
.docs-content h2 { margin: .45rem 0 1rem; }
.docs-content li { margin: .45rem 0; }
.docs-content pre { padding: 18px; border-radius: 10px; color: #d5ecf4; background: #0d1b22; overflow: auto; }
.docs-content code { font-family: Consolas, monospace; }
.callout { margin-top: 16px; padding: 14px 16px; border-left: 4px solid var(--accent); border-radius: 6px; background: var(--accent-soft); }
.callout.warning { border-color: #d68811; background: #fff3df; }

@media (max-width: 1100px) {
    .installation-grid { grid-template-columns: repeat(2, 1fr); }
    .gateway-grid { grid-template-columns: repeat(2, 1fr); }
    .quick-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 991.98px) {
    .admin-shell { display: block; }
    .admin-content { width: min(100% - 32px, 1180px); padding-top: 26px; }
    .admin-topbar { padding-inline: 18px; }
    .two-column, .docs-layout { grid-template-columns: 1fr; }
    .docs-nav { position: static; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid, .compact-editor { grid-template-columns: 1fr; }
    .onboarding-card { grid-template-columns: 1fr; }
    .filter-grid, .filter-grid.activity-filter { grid-template-columns: 1fr 1fr; }
    .filter-search { grid-column: 1 / -1; }
    .system-grid { grid-template-columns: 1fr; }
}

@media (max-width: 650px) {
    .shell { width: min(100% - 22px, 1180px); }
    .public-content { padding-block: 24px; }
    .public-nav nav > a:not(.btn), .sidebar-brand small { display: none; }
    .admin-content { width: min(100% - 20px, 1180px); padding-block: 20px 34px; }
    .service-pill { display: none; }
    .page-heading { align-items: flex-start; flex-direction: column; }
    .page-heading h1 { font-size: 1.7rem; }
    .panel-card { padding: 17px; border-radius: 13px; }
    .panel-heading { align-items: flex-start; flex-direction: column; }
    .metric-grid, .feature-grid, .form-grid, .compact-grid, .quick-steps, .installation-grid, .gateway-grid { grid-template-columns: 1fr; }
    .inline-create-form, .filter-grid, .filter-grid.activity-filter, .role-guide, .checklist { grid-template-columns: 1fr; }
    .entity-row, .user-row { grid-template-columns: auto 1fr; }
    .entity-row .entity-stat, .entity-row .action-row, .user-row .user-role-form, .user-row .action-row { grid-column: 1 / -1; }
    .user-role-form { align-items: stretch; flex-direction: column; }
    .search-form { width: 100%; }
    .results-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
    .hero { grid-template-columns: 1fr; padding: 30px 24px; border-radius: 18px; }
    .hero h1 { font-size: 2rem; }
    .signature-card { display: none; }
    .api-strip { align-items: flex-start; flex-direction: column; }
    .auth-card { padding: 25px 20px; border-radius: 16px; }
}