:root {
    --paper: #f2eee6;
    --paper-strong: #fffaf2;
    --ink: #162127;
    --muted: #647177;
    --line: rgba(22, 33, 39, 0.12);
    --line-strong: rgba(22, 33, 39, 0.22);
    --steel: #294754;
    --steel-soft: #406776;
    --brass: #be7e38;
    --olive: #738b53;
    --alert: #b44f3f;
    --surface: rgba(255, 250, 242, 0.8);
    --surface-soft: rgba(255, 255, 255, 0.5);
    --surface-moderate: rgba(255, 255, 255, 0.52);
    --surface-strong: rgba(255, 255, 255, 0.65);
    --surface-code: rgba(255, 255, 255, 0.55);
    --surface-card: rgba(255, 255, 255, 0.48);
    --surface-focus: rgba(214, 228, 236, 0.72);
    --background-shell: linear-gradient(155deg, #ebe5da 0%, #f7f2ea 42%, #e5eceb 100%);
    --backdrop-top: rgba(190, 126, 56, 0.18);
    --backdrop-bottom: rgba(64, 103, 118, 0.18);
    --accent-gradient-start: #294754;
    --accent-gradient-end: #173542;
    --on-accent: #f8fbfc;
    --on-accent-muted: rgba(248, 251, 252, 0.78);
    --secondary-soft: rgba(41, 71, 84, 0.1);
    --brass-soft: rgba(190, 126, 56, 0.14);
    --success-soft: rgba(97, 132, 74, 0.16);
    --warning-soft: rgba(190, 126, 56, 0.16);
    --danger-soft: rgba(180, 79, 63, 0.08);
    --muted-soft: rgba(100, 112, 122, 0.12);
    --brass-ink: #7d4d15;
    --shadow: 0 20px 60px rgba(28, 39, 45, 0.16);
    --radius: 24px;
}

html[data-theme='dark'] {
    --paper: #0e1519;
    --paper-strong: #162127;
    --ink: #ecf2f4;
    --muted: #9babb1;
    --line: rgba(236, 242, 244, 0.12);
    --line-strong: rgba(236, 242, 244, 0.24);
    --steel: #84b6c8;
    --steel-soft: #a5ceda;
    --brass: #d7a45e;
    --olive: #91b46f;
    --alert: #ff9687;
    --surface: rgba(12, 20, 24, 0.82);
    --surface-soft: rgba(22, 33, 39, 0.76);
    --surface-moderate: rgba(26, 38, 45, 0.8);
    --surface-strong: rgba(33, 47, 55, 0.88);
    --surface-code: rgba(17, 28, 34, 0.86);
    --surface-card: rgba(20, 31, 37, 0.74);
    --surface-focus: rgba(42, 67, 79, 0.82);
    --background-shell: linear-gradient(160deg, #081014 0%, #122026 42%, #1a2f37 100%);
    --backdrop-top: rgba(215, 164, 94, 0.14);
    --backdrop-bottom: rgba(132, 182, 200, 0.14);
    --accent-gradient-start: #345b69;
    --accent-gradient-end: #183844;
    --on-accent: #f3f8fa;
    --on-accent-muted: rgba(243, 248, 250, 0.76);
    --secondary-soft: rgba(132, 182, 200, 0.16);
    --brass-soft: rgba(215, 164, 94, 0.18);
    --success-soft: rgba(145, 180, 111, 0.18);
    --warning-soft: rgba(215, 164, 94, 0.18);
    --danger-soft: rgba(255, 150, 135, 0.14);
    --muted-soft: rgba(155, 171, 177, 0.18);
    --brass-ink: #f2cb95;
    --shadow: 0 26px 72px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

html {
    min-height: 100%;
    color-scheme: light;
    background:
        radial-gradient(circle at top left, rgba(190, 126, 56, 0.22), transparent 30%),
        radial-gradient(circle at bottom right, rgba(64, 103, 118, 0.2), transparent 28%),
        var(--background-shell);
}

html[data-theme='dark'] {
    color-scheme: dark;
}

body {
    margin: 0;
    color: var(--ink);
    font-family: "Trebuchet MS", "Gill Sans", sans-serif;
    transition: color 180ms ease;
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}

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

.backdrop {
    position: fixed;
    z-index: 0;
    border-radius: 999px;
    filter: blur(10px);
    pointer-events: none;
}

.backdrop--top {
    width: 32rem;
    height: 32rem;
    top: -10rem;
    right: -8rem;
    background: var(--backdrop-top);
}

.backdrop--bottom {
    width: 26rem;
    height: 26rem;
    left: -8rem;
    bottom: -8rem;
    background: var(--backdrop-bottom);
}

.app-shell {
    position: relative;
    z-index: 1;
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-panel,
.panel,
.subpanel,
.metric-card,
.demo-card,
.session-card,
.list-item,
.view-context,
.module-tab {
    border: 1px solid var(--line);
    background: var(--surface);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.hero-panel {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    padding: 2rem;
    border-radius: calc(var(--radius) + 8px);
    margin-bottom: 1.5rem;
}

.eyebrow,
.panel-kicker {
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 0.76rem;
    color: var(--steel-soft);
}

.hero-panel h1 {
    margin-top: 0.6rem;
    font-family: Georgia, Cambria, "Times New Roman", serif;
    font-size: clamp(2.2rem, 4vw, 4rem);
    line-height: 0.96;
    max-width: 12ch;
}

.hero-copy {
    margin-top: 1rem;
    max-width: 64ch;
    color: var(--muted);
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    flex-wrap: wrap;
}

.module-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
    align-items: stretch;
}

.module-tab {
    display: grid;
    gap: 0.3rem;
    min-width: 9rem;
    padding: 0.9rem 1.05rem;
    border-radius: 20px;
    text-align: left;
    background: var(--surface-soft);
}

.module-tab small {
    min-width: 0;
}

.module-tab span {
    font-weight: 700;
}

.module-tab small {
    color: var(--muted);
}

.module-tab.is-active {
    background: linear-gradient(135deg, var(--accent-gradient-start) 0%, var(--accent-gradient-end) 100%);
    color: var(--on-accent);
    border-color: transparent;
}

.module-tab.is-active small {
    color: var(--on-accent-muted);
}

.view-context {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1.35rem;
    border-radius: calc(var(--radius) - 4px);
    margin-bottom: 1.4rem;
}

.view-context h2 {
    margin-top: 0.35rem;
    font-family: Georgia, Cambria, "Times New Roman", serif;
}

.view-copy {
    margin-top: 0.75rem;
    max-width: 60ch;
    color: var(--muted);
    line-height: 1.6;
}

.view-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    align-items: flex-start;
    justify-content: flex-end;
}

.view-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    padding: 0.55rem 0.85rem;
    background: rgba(41, 71, 84, 0.08);
    color: var(--steel);
    font-size: 0.86rem;
}

.workspace-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.25rem;
}

.panel {
    padding: 1.35rem;
    border-radius: var(--radius);
}

.panel--auth {
    grid-column: span 4;
}

.panel--metrics {
    grid-column: span 8;
}

.panel--wide {
    grid-column: span 8;
}

.panel--full {
    grid-column: span 12;
}

.panel--inspector {
    grid-column: span 4;
}

.panel--operations {
    display: grid;
    gap: 1rem;
}

.panel-head,
.subpanel-head,
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.toolbar {
    flex-wrap: wrap;
    align-items: flex-end;
}

.toolbar > * {
    min-width: 0;
}

.panel-head h2,
.subpanel-head h3,
.overview-hero h3 {
    margin-top: 0.35rem;
    font-family: Georgia, Cambria, "Times New Roman", serif;
}

.auth-form {
    display: grid;
    gap: 0.85rem;
    margin-top: 1.1rem;
}

.auth-form label,
.search-field {
    display: grid;
    gap: 0.35rem;
    font-size: 0.92rem;
    color: var(--muted);
}

.stack-form {
    display: grid;
    gap: 0.9rem;
    padding: 1.1rem;
    border-radius: 20px;
    border: 1px solid var(--line);
    background: var(--surface-moderate);
}

.stack-form--compact {
    margin-top: 0.9rem;
}

.form-caption {
    margin-top: 0.45rem;
    color: var(--muted);
    line-height: 1.5;
}

.form-grid {
    display: grid;
    gap: 0.8rem;
}

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

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

.stack-form label {
    display: grid;
    gap: 0.35rem;
    font-size: 0.92rem;
    color: var(--muted);
}

.auth-form input,
.search-field input,
.search-field select,
.stack-form input,
.stack-form select,
.stack-form textarea {
    width: 100%;
    border: 1px solid var(--line-strong);
    border-radius: 14px;
    padding: 0.85rem 1rem;
    background: var(--surface-strong);
    color: var(--ink);
}

.search-field--compact {
    min-width: 16rem;
}

.stack-form textarea {
    resize: vertical;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--steel);
}

.checkbox-row input {
    width: auto;
    margin: 0;
}

.button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 0.85rem 1.2rem;
    cursor: pointer;
    transition: transform 140ms ease, opacity 140ms ease, background-color 140ms ease;
}

.button:hover,
.demo-card:hover,
.data-table tbody tr:hover {
    transform: translateY(-1px);
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none;
}

.button--primary {
    background: linear-gradient(135deg, var(--accent-gradient-start) 0%, var(--accent-gradient-end) 100%);
    color: var(--on-accent);
}

.button--secondary {
    background: var(--secondary-soft);
    color: var(--steel);
}

.button--ghost {
    background: var(--brass-soft);
    color: var(--brass-ink);
}

.button--danger {
    background: rgba(180, 79, 63, 0.14);
    color: var(--alert);
}

.button--tiny {
    padding: 0.55rem 0.85rem;
    font-size: 0.85rem;
}

.demo-grid {
    display: grid;
    gap: 0.75rem;
    margin-top: 1rem;
}

.demo-card {
    text-align: left;
    border-radius: 18px;
    padding: 0.95rem 1rem;
    background: var(--surface-soft);
}

.demo-card span,
.panel-note,
.session-label,
.mode-pill,
.status-pill,
.subpanel-head span,
.overview-number {
    color: var(--muted);
}

.session-card,
.panel-note,
.subpanel,
.inspector-empty,
.list-item,
.metric-card {
    border-radius: 18px;
}

.session-card,
.panel-note,
.inspector-empty {
    margin-top: 1rem;
    padding: 1rem;
}

.panel-note--compact {
    margin-top: 0.9rem;
    padding: 0.9rem 1rem;
}

.status-pill,
.mode-pill,
.signal-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: 999px;
    padding: 0.45rem 0.8rem;
    background: var(--secondary-soft);
    font-size: 0.8rem;
}

.signal-chip--default,
.signal-chip--info {
    background: var(--secondary-soft);
    color: var(--steel);
}

.signal-chip--success {
    background: var(--success-soft);
    color: var(--olive);
}

.signal-chip--warning {
    background: var(--warning-soft);
    color: var(--brass-ink);
}

.signal-chip--error {
    background: rgba(180, 79, 63, 0.16);
    color: var(--alert);
}

.signal-chip--muted {
    background: var(--muted-soft);
    color: var(--muted);
}

.metric-grid,
.two-column-grid,
.mini-columns,
.overview-summary {
    display: grid;
    gap: 1rem;
}

.ops-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

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

.metric-grid {
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    margin-top: 1rem;
}

.metric-card {
    padding: 1rem;
}

.metric-card strong {
    display: block;
    font-size: 1.8rem;
    margin-top: 0.45rem;
    color: var(--steel);
}

.metric-card small {
    display: block;
    margin-top: 0.35rem;
    color: var(--muted);
}

.metric-card--empty {
    color: var(--muted);
}

.two-column-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 1rem;
}

.subpanel {
    padding: 1rem;
}

.subpanel--feed {
    background: var(--surface-soft);
}

.subpanel--actions {
    margin-top: 1rem;
    background: var(--surface-soft);
}

.subpanel--detail {
    margin-top: 1rem;
    background: var(--surface-soft);
}

.detail-stack {
    display: grid;
    gap: 1rem;
    margin-top: 0.9rem;
}

.detail-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.detail-head h3 {
    margin-top: 0.35rem;
    font-family: Georgia, Cambria, "Times New Roman", serif;
}

.detail-meta,
.detail-columns {
    display: grid;
    gap: 1rem;
}

.detail-meta {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

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

.detail-columns--support-board {
    margin-top: 1rem;
    align-items: start;
}

.detail-code,
.detail-text {
    margin: 0;
    border-radius: 16px;
    padding: 1rem;
    border: 1px solid var(--line);
    background: var(--surface-code);
    color: var(--ink);
    line-height: 1.55;
    white-space: pre-wrap;
    word-break: break-word;
}

.detail-text--preview {
    max-height: 24rem;
    overflow: auto;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.92rem;
}

.detail-note {
    margin: 0.7rem 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.list-stack,
.mini-list {
    display: grid;
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.list-stack--tight {
    gap: 0.6rem;
}

.list-item {
    padding: 0.9rem 1rem;
    background: var(--surface-code);
}

.support-board-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.support-config-grid {
    display: grid;
    gap: 0.85rem;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.support-config-card {
    display: grid;
    gap: 0.75rem;
    padding: 0.9rem;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--surface-card);
}

.support-config-card strong {
    color: var(--steel);
}

.inline-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.85rem;
}

.inline-actions--wrap {
    flex-wrap: wrap;
}

.signal-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.support-status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-top: 0.9rem;
}

.support-status-card {
    padding: 0.75rem 0.85rem;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: var(--surface-soft);
}

.support-status-card span {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
}

.support-status-card strong {
    display: block;
    margin-top: 0.3rem;
    color: var(--steel);
    font-size: 0.98rem;
}

.list-item--success {
    border-left: 4px solid var(--olive);
}

.list-item--error {
    border-left: 4px solid var(--alert);
}

.list-item--focused {
    border-left: 4px solid var(--steel);
    background: var(--surface-focus);
}

.list-item h4,
.list-item strong {
    font-size: 1rem;
}

.list-item p,
.list-item span,
.mini-list p {
    color: var(--muted);
    line-height: 1.45;
}

.list-item--button {
    width: 100%;
    appearance: none;
    text-align: left;
    cursor: pointer;
}

.data-table-wrap {
    margin-top: 1rem;
    overflow: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}

.data-table th,
.data-table td {
    padding: 0.85rem 0.75rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.data-table th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.customer-trigger {
    appearance: none;
    border: 0;
    background: transparent;
    padding: 0;
    color: inherit;
    cursor: pointer;
    text-align: left;
}

.overview-hero {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.overview-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 1rem;
}

.overview-summary .metric-card {
    background: var(--surface-code);
}

.mini-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 1rem;
}

.mini-columns h4 {
    margin-bottom: 0.4rem;
    color: var(--steel);
}

.mini-columns > div {
    min-width: 0;
}

.empty-state,
.error-state {
    padding: 0.9rem 1rem;
    border-radius: 16px;
    background: var(--surface-card);
    color: var(--muted);
}

.error-state {
    color: var(--alert);
    background: var(--danger-soft);
}

@media (max-width: 1200px) {
    .panel--auth,
    .panel--metrics,
    .panel--wide,
    .panel--inspector,
    .panel--full {
        grid-column: span 12;
    }

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

@media (max-width: 980px) {
    .hero-panel,
    .view-context,
    .panel-head,
    .toolbar,
    .overview-hero,
    .support-board-head {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions,
    .view-badges,
    .inline-actions {
        justify-content: flex-start;
    }

    .detail-columns,
    .mini-columns,
    .two-column-grid,
    .overview-summary,
    .support-config-grid,
    .support-status-grid,
    .form-grid--three,
    .ops-grid--secondary {
        grid-template-columns: 1fr;
    }

    .module-nav {
        flex-wrap: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 0 0 0.5rem;
        margin-inline: -0.1rem;
        scroll-snap-type: x proximity;
        -webkit-overflow-scrolling: touch;
    }

    .module-tab {
        flex: 0 0 min(14rem, calc(70vw - 1rem));
        min-width: 0;
        scroll-snap-align: start;
    }

    .workspace-grid {
        gap: 1rem;
    }
}

@media (max-width: 760px) {
    .app-shell {
        padding: 1rem;
    }

    .hero-panel,
    .view-context {
        padding: 1.2rem;
    }

    .module-tab {
        flex-basis: min(15rem, 82vw);
        padding: 0.82rem 0.95rem;
    }

    .two-column-grid,
    .mini-columns,
    .overview-summary,
    .detail-columns,
    .support-config-grid,
    .form-grid--two,
    .form-grid--three {
        grid-template-columns: 1fr;
    }

    .support-board-head {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-panel h1 {
        max-width: none;
    }

    .hero-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .hero-actions .button,
    .toolbar .button,
    .inline-actions .button {
        width: 100%;
        justify-content: center;
    }

    .toolbar .search-field,
    .search-field--compact {
        min-width: 0;
        width: 100%;
    }

    .data-table {
        min-width: 560px;
    }
}

@media (max-width: 560px) {
    .app-shell {
        padding: 0.8rem;
    }

    .hero-panel,
    .view-context,
    .panel,
    .subpanel,
    .session-card,
    .panel-note,
    .inspector-empty {
        border-radius: 18px;
    }

    .hero-panel h1 {
        font-size: clamp(1.9rem, 9vw, 2.6rem);
    }

    .module-nav {
        gap: 0.6rem;
        padding-bottom: 0.35rem;
    }

    .module-tab {
        flex-basis: calc(82vw - 0.4rem);
    }

    .panel,
    .stack-form,
    .detail-code,
    .detail-text,
    .list-item,
    .metric-card,
    .support-config-card,
    .support-status-card {
        padding-left: 0.85rem;
        padding-right: 0.85rem;
    }

    .view-badges {
        gap: 0.45rem;
    }

    .view-badge,
    .status-pill,
    .mode-pill,
    .signal-chip {
        width: 100%;
        justify-content: center;
    }

    .inline-actions {
        display: grid;
        grid-template-columns: 1fr;
    }
}