:root {
    color-scheme: light;
    --ink: #102033;
    --muted: #667085;
    --line: #dde4ef;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --teal: #0ea5a3;
    --blue: #2563eb;
    --green: #16a34a;
    --red: #dc2626;
    --amber: #d97706;
}

html,
body {
    min-height: 100%;
    font-family: Inter, "Segoe UI", Arial, sans-serif;
    color: var(--ink);
    background: #f4f7fb;
}

.dark-theme body {
    color: #e5edf7;
    background: #111827;
}

a {
    color: var(--blue);
}

h1,
h2,
p {
    margin: 0;
}

h1 {
    font-size: 1.8rem;
    font-weight: 800;
}

h2 {
    font-size: 1rem;
    font-weight: 800;
}

.btn {
    min-height: 2.5rem;
    border-radius: 0.5rem;
    font-weight: 700;
}

.btn-primary {
    background: var(--blue);
    border-color: var(--blue);
}

.btn-outline-secondary {
    color: #3b4658;
    border-color: #cbd5e1;
}

.form-control,
.form-select {
    min-height: 2.5rem;
    border-radius: 0.5rem;
    border-color: #cbd5e1;
}

.page-heading {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.eyebrow {
    margin-bottom: 0.2rem;
    color: var(--teal);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.6rem;
}

.icon-button {
    display: grid;
    width: 2.5rem;
    height: 2.5rem;
    place-items: center;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    background: #fff;
    color: #334155;
    font-weight: 800;
}

.search-input {
    width: min(22rem, 100%);
}

.compact-control {
    width: 12rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.metric-card,
.panel {
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    background: var(--surface);
    box-shadow: 0 0.75rem 1.75rem rgba(16, 32, 51, 0.06);
}

.metric-card {
    padding: 1rem;
    border-top: 0.25rem solid var(--blue);
}

.metric-card.success {
    border-top-color: var(--green);
}

.metric-card.danger {
    border-top-color: var(--red);
}

.metric-card.warning {
    border-top-color: var(--amber);
}

.metric-card span,
.metric-card small,
td span,
.device-row span,
.feed-item small,
.panel-header p {
    color: var(--muted);
}

.metric-card strong {
    display: block;
    margin-top: 0.35rem;
    font-size: 1.9rem;
}

.work-grid,
.settings-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.panel {
    padding: 1rem;
}

.dark-theme .metric-card,
.dark-theme .panel,
.dark-theme .topbar,
.dark-theme .sidebar,
.dark-theme .icon-button,
.dark-theme .form-control,
.dark-theme .form-select {
    background: #182235;
    border-color: #2f3b50;
    color: #e5edf7;
}

.dark-theme .app-shell,
.dark-theme .main-surface {
    background: #111827;
}

.dark-theme .feed-item,
.dark-theme .device-row,
.dark-theme .setting-row {
    background: #101827;
    border-color: #2f3b50;
}

.dark-theme .table,
.dark-theme .table th,
.dark-theme .table td {
    color: #e5edf7;
}

.action-alert {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border: 1px solid #b7e4df;
    border-radius: 0.5rem;
    background: #ecfdfb;
    color: #0f766e;
    font-weight: 800;
}

.danger-alert {
    border-color: #fecaca;
    background: #fef2f2;
    color: #991b1b;
}

.login-shell {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 1rem;
    background: #f4f7fb;
}

.login-panel {
    display: grid;
    width: min(28rem, 100%);
    gap: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    background: #fff;
    box-shadow: 0 1.5rem 3rem rgba(16, 32, 51, 0.12);
}

.login-brand-header {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.login-logo {
    display: block;
    width: 5rem;
    height: auto;
    flex: 0 0 auto;
    object-fit: contain;
}

.login-copy {
    margin-top: 0.35rem;
    color: var(--muted);
}

.login-form,
.demo-accounts {
    display: grid;
    gap: 0.75rem;
}

.demo-accounts {
    padding-top: 0.75rem;
    border-top: 1px solid #edf1f6;
    color: var(--muted);
    font-size: 0.85rem;
}

.setting-row {
    color: inherit;
    text-decoration: none;
}

.form-panel {
    margin-bottom: 1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.inline-check {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 2.5rem;
    padding: 0 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    background: #fff;
    font-weight: 700;
}

.panel-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.table {
    margin-bottom: 0;
}

.table th {
    color: #536074;
    font-size: 0.78rem;
    text-transform: uppercase;
}

.table td strong,
.table td span {
    display: block;
}

.data-table td,
.data-table th {
    white-space: nowrap;
}

.selected-row {
    outline: 2px solid #0ea5a3;
    outline-offset: -2px;
}

.row-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.btn-sm {
    min-height: 2rem;
    border-radius: 0.4rem;
    font-size: 0.8rem;
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 1.65rem;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    background: #eef2f7;
    color: #334155;
    font-size: 0.78rem;
    font-weight: 800;
}

.status-pill.online {
    background: #dcfce7;
    color: #166534;
}

.status-pill.offline {
    background: #fee2e2;
    color: #991b1b;
}

.status-pill.warning {
    background: #fef3c7;
    color: #92400e;
}

.feed,
.device-list,
.settings-list {
    display: grid;
    gap: 0.75rem;
}

.feed-item,
.device-row,
.setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 1px solid #edf1f6;
    border-radius: 0.5rem;
    background: var(--surface-soft);
}

.feed-item {
    justify-content: flex-start;
}

.feed-dot {
    flex: 0 0 auto;
    width: 0.65rem;
    height: 0.65rem;
    border-radius: 50%;
    background: var(--teal);
}

.device-row strong,
.device-row span,
.feed-item strong,
.feed-item small {
    display: block;
}

.chart-bars {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    align-items: end;
    gap: 0.8rem;
    height: 14rem;
    padding-top: 1rem;
}

.chart-bar {
    position: relative;
    min-height: 2.5rem;
    border-radius: 0.5rem 0.5rem 0 0;
    background: linear-gradient(180deg, #2563eb, #0ea5a3);
}

.chart-bar span {
    position: absolute;
    left: 50%;
    bottom: -1.5rem;
    color: var(--muted);
    transform: translateX(-50%);
}

.segmented {
    display: inline-flex;
    padding: 0.2rem;
    border: 1px solid #cbd5e1;
    border-radius: 0.5rem;
    background: #f8fafc;
}

.segmented button {
    min-width: 4.5rem;
    min-height: 2rem;
    border: 0;
    border-radius: 0.35rem;
    background: transparent;
    font-weight: 800;
}

.segmented .active {
    background: #fff;
    box-shadow: 0 0.2rem 0.6rem rgba(16, 32, 51, 0.08);
}

.command-grid,
.report-filter {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
}

.command-log {
    display: grid;
    gap: 0.4rem;
    margin-top: 1rem;
    color: var(--muted);
    font-size: 0.85rem;
}

.sdk-strip {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.notification-popover {
    position: absolute;
    top: 4rem;
    right: 1rem;
    width: min(22rem, calc(100vw - 2rem));
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 0.5rem;
    background: #fff;
    box-shadow: 0 1rem 2rem rgba(16, 32, 51, 0.16);
}

.notification-item {
    display: grid;
    gap: 0.15rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid #edf1f6;
}

.notification-item span {
    color: var(--muted);
    font-size: 0.86rem;
}

.dark-theme .notification-popover {
    background: #182235;
    border-color: #2f3b50;
}

.setting-row {
    cursor: pointer;
}

.company-logo-preview {
    width: 5rem;
    height: 5rem;
    border: 1px solid var(--line);
    border-radius: 0.75rem;
    object-fit: contain;
    background: #fff;
}

.file-control {
    display: grid;
    gap: 0.35rem;
    height: auto;
}

.usage-list {
    display: grid;
    gap: 0.7rem;
}

.usage-list div,
.connectivity-guide {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.usage-list div {
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--line);
}

.connectivity-guide {
    flex-wrap: wrap;
    margin-bottom: 1rem;
    padding: 1rem;
}

.connectivity-guide div {
    display: grid;
    flex: 1 1 20rem;
    gap: 0.2rem;
}

.connectivity-guide span {
    color: var(--muted);
}

.marketing-page {
    min-height: 100vh;
    background: linear-gradient(180deg, #f1f8ff 0, #fff 34rem);
}

.marketing-nav,
.marketing-hero,
.marketing-section,
.marketing-footer {
    width: min(72rem, calc(100% - 2rem));
    margin-inline: auto;
}

.marketing-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.marketing-nav nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.marketing-nav a {
    text-decoration: none;
    font-weight: 700;
}

.marketing-brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--ink);
    font-size: 1.15rem;
}

.marketing-logo {
    display: block;
    width: 4rem;
    height: auto;
    flex: 0 0 auto;
    object-fit: contain;
}

.marketing-hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 38rem;
    margin-top: 1rem;
    padding: clamp(2rem, 6vw, 5rem);
    overflow: hidden;
    border-radius: 1.25rem;
    isolation: isolate;
    box-shadow: 0 2rem 5rem rgba(16, 32, 51, 0.16);
}

.marketing-hero::after {
    position: absolute;
    z-index: -1;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, rgba(239, 249, 255, 0.98) 0%, rgba(239, 249, 255, 0.9) 38%, rgba(239, 249, 255, 0.15) 68%, transparent 100%);
}

.marketing-hero-image {
    position: absolute;
    z-index: -2;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.marketing-hero-copy {
    width: min(43rem, 58%);
}

.marketing-hero h1 {
    max-width: 48rem;
    margin-bottom: 1rem;
    font-size: clamp(2.4rem, 7vw, 4.8rem);
    line-height: 1.02;
}

.marketing-hero p:not(.eyebrow),
.marketing-section > p,
.marketing-grid p,
.manual-section li,
.marketing-section p,
.contact-details span {
    color: var(--muted);
    line-height: 1.7;
}

.marketing-hero .toolbar {
    margin-top: 1.5rem;
}

.hero-status-card,
.marketing-grid article,
.contact-card {
    display: grid;
    gap: 0.5rem;
    padding: 1.5rem;
    border: 1px solid #dbe8f5;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 1.5rem 4rem rgba(37, 99, 235, 0.12);
}

.hero-status-card strong {
    font-size: 1.5rem;
}

.hero-status-card span,
.hero-status-card small {
    color: var(--teal);
    font-weight: 800;
}

.marketing-section {
    padding: 5rem 0;
    scroll-margin-top: 4rem;
}

.marketing-section h2 {
    max-width: 45rem;
    margin-bottom: 1rem;
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.marketing-grid {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.marketing-grid article strong {
    font-size: 1.15rem;
}

.marketing-feature-image {
    position: relative;
    margin: 2rem 0 0;
    overflow: hidden;
    border-radius: 1rem;
    box-shadow: 0 1.5rem 4rem rgba(16, 32, 51, 0.14);
}

.marketing-feature-image img {
    display: block;
    width: 100%;
    height: clamp(20rem, 45vw, 35rem);
    object-fit: cover;
}

.marketing-feature-image figcaption {
    position: absolute;
    right: 1rem;
    bottom: 1rem;
    display: grid;
    gap: 0.25rem;
    max-width: 26rem;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    background: rgba(16, 32, 51, 0.9);
    color: #fff;
    backdrop-filter: blur(0.5rem);
}

.marketing-feature-image figcaption span {
    color: #dce8f5;
}

.manual-quick-start {
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
}

.manual-quick-start article,
.connection-manual article,
.daily-checklist {
    padding: 1.25rem;
    border: 1px solid #dbe8f5;
    border-radius: 1rem;
    background: #fff;
    box-shadow: 0 1rem 2.5rem rgba(16, 32, 51, 0.06);
}

.manual-quick-start article {
    display: grid;
    gap: 0.45rem;
}

.manual-quick-start article > span,
.manual-guide summary span {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    place-items: center;
    border-radius: 0.6rem;
    background: #dff7f6;
    color: #087f7d;
    font-size: 0.8rem;
    font-weight: 900;
}

.manual-quick-start strong {
    font-size: 1.1rem;
}

.manual-guide {
    display: grid;
    gap: 0.75rem;
}

.manual-guide details {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    background: #fff;
}

.manual-guide summary {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.2rem;
    cursor: pointer;
    color: var(--ink);
    font-weight: 800;
    list-style: none;
}

.manual-guide summary::-webkit-details-marker {
    display: none;
}

.manual-guide summary::after {
    margin-left: auto;
    content: "+";
    color: var(--blue);
    font-size: 1.4rem;
}

.manual-guide details[open] summary::after {
    content: "−";
}

.manual-guide details > div {
    padding: 0 1.25rem 1.25rem 4.25rem;
    border-top: 1px solid #edf1f6;
}

.manual-guide ul,
.manual-guide ol,
.connection-manual ol,
.daily-checklist ul {
    display: grid;
    gap: 0.65rem;
    margin: 1rem 0 0;
    padding-left: 1.25rem;
    color: var(--muted);
    line-height: 1.6;
}

.connection-manual {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.connection-manual h3,
.daily-checklist h3 {
    margin: 0;
    font-size: 1.2rem;
}

.connection-manual strong {
    overflow-wrap: anywhere;
}

.daily-checklist {
    margin-top: 1rem;
    border-left: 0.35rem solid var(--teal);
}

.contact-layout {
    display: grid;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-card a {
    font-size: 1.1rem;
    font-weight: 800;
}

.contact-form,
.contact-details {
    display: grid;
    gap: 1rem;
}

.contact-form {
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: #fff;
    box-shadow: 0 1rem 3rem rgba(16, 32, 51, 0.08);
}

.contact-form-grid {
    display: grid;
    gap: 1rem;
}

.contact-form label {
    display: grid;
    gap: 0.35rem;
    font-weight: 700;
}

.contact-form textarea {
    resize: vertical;
}

.contact-honeypot {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.contact-notice {
    margin-top: 1.25rem;
    padding: 1rem;
    border-radius: 0.75rem;
    font-weight: 700;
}

.contact-notice.success {
    color: #166534;
    background: #dcfce7;
}

.contact-notice.error {
    color: #991b1b;
    background: #fee2e2;
}

.location-map {
    width: 100%;
    min-height: 22rem;
    border: 0;
    border-radius: 1rem;
}

.marketing-footer {
    padding: 2rem 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
}

@media (min-width: 980px) {
    .manual-quick-start {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

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

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

    .contact-layout {
        grid-template-columns: 1.3fr 0.7fr;
    }

    .contact-form-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .work-grid {
        grid-template-columns: 1.2fr 0.8fr;
    }

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

    .span-2 {
        grid-column: span 2;
    }

    .command-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .report-filter {
        grid-template-columns: 11rem minmax(12rem, 1fr) minmax(12rem, 1fr) 7rem;
        margin-bottom: 1rem;
    }
}

@media (max-width: 720px) {
    .marketing-nav {
        align-items: flex-start;
    }

    .marketing-nav nav a:not(.btn) {
        display: none;
    }

    .marketing-hero {
        min-height: 38rem;
        align-items: flex-end;
    }

    .marketing-hero::after {
        background: linear-gradient(0deg, rgba(239, 249, 255, 0.99) 0%, rgba(239, 249, 255, 0.92) 52%, rgba(239, 249, 255, 0.08) 100%);
    }

    .marketing-hero-image {
        object-position: 62% center;
    }

    .marketing-hero-copy {
        width: 100%;
    }

    .marketing-feature-image figcaption {
        right: 0.75rem;
        bottom: 0.75rem;
        left: 0.75rem;
    }

    .manual-guide details > div {
        padding: 0 1rem 1rem;
    }
}