:root {
    --brand-primary: #003790;
    --brand-accent: #FF8F00;
    --brand-primary-hover: #002a6d;
    --brand-primary-light: #eaf1ff;
    --brand-accent-light: #fff4e3;
    --background: #f6f8fb;
    --surface: #ffffff;
    --surface-subtle: #fbfcff;
    --text-primary: #182033;
    --text-secondary: #647084;
    --border: #dce3ee;
    --danger: #b94646;
    --danger-light: #fff3f3;
    --warning: #9b5b00;
    --shadow: 0 16px 40px rgba(0, 36, 92, 0.08);
    --bg: var(--background);
    --panel: var(--surface);
    --ink: var(--text-primary);
    --muted: var(--text-secondary);
    --line: var(--border);
    --sidebar: var(--surface);
    --sidebar-soft: var(--brand-primary-light);
    --accent: var(--brand-primary);
    --accent-dark: var(--brand-primary-hover);
    --amber: var(--brand-accent);
    --red: var(--danger);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100%;
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
    outline: none;
    box-shadow: none;
}

button:focus-visible,
a:focus-visible,
.button:focus-visible,
.tabs a:focus-visible,
.nav-list a:focus-visible,
.channel-rail a:focus-visible,
.summary-card:focus-visible,
.action-card:focus-visible,
.list-row:focus-visible,
.task-card:focus-visible {
    outline: 1px solid var(--brand-primary);
    outline-offset: 2px;
    border-color: var(--brand-primary);
    box-shadow: none;
}

.app-shell {
    display: grid;
    grid-template-columns: 248px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 20px 16px;
    background: var(--sidebar);
    color: var(--text-primary);
    border-right: 1px solid var(--border);
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 74px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--brand-accent);
    color: var(--brand-primary);
}

.brand-logo {
    display: block;
    width: auto;
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.brand-logo-horizontal {
    max-width: 196px;
    max-height: 52px;
}

.brand-logo-stacked {
    max-width: 220px;
    max-height: 185px;
    margin: 0 auto;
}

.nav-list {
    display: grid;
    gap: 6px;
    margin-top: 32px;
}

.nav-list a {
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 650;
}

.nav-list a:hover,
.nav-list a.active {
    background: var(--brand-primary-light);
    color: var(--brand-primary);
    box-shadow: inset 3px 0 0 var(--brand-accent);
}

.main-area {
    min-width: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 72px;
    padding: 14px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
}

.content {
    width: min(1180px, 100%);
    margin: 0 auto;
    padding: 30px 28px 52px;
}

.eyebrow {
    margin: 0 0 4px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 0;
    font-size: 2rem;
    line-height: 1.15;
}

h2 {
    font-size: 1.1rem;
}

.page-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.button-row,
.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 750;
    line-height: 1.2;
}

.button-primary {
    background: var(--brand-primary);
    color: var(--surface);
}

.button-primary:hover {
    background: var(--brand-primary-hover);
}

.button-secondary {
    border-color: var(--line);
    background: var(--surface);
    color: var(--brand-primary);
}

.button-secondary:hover {
    border-color: var(--brand-accent);
    color: var(--brand-primary-hover);
}

.button-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--muted);
}

.stats-grid,
.cards-grid,
.action-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}

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

.stat-card,
.summary-card,
.action-card,
.panel,
.table-card,
.project-summary {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
}

.stat-card {
    padding: 18px;
}

.stat-card span,
.project-summary span {
    display: block;
    color: var(--muted);
    font-size: 0.9rem;
}

.stat-card strong {
    display: block;
    margin-top: 6px;
    font-size: 2rem;
}

.summary-card,
.action-card {
    display: grid;
    gap: 10px;
    padding: 18px;
}

.summary-card:hover,
.action-card:hover,
.list-row:hover,
.task-card:hover {
    border-color: var(--brand-primary);
}

.summary-card span,
.action-card span,
.summary-card small,
.list-row small,
.task-card span,
.task-card small {
    color: var(--muted);
}

.two-column {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 18px;
}

.panel {
    padding: 18px;
}

.panel-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.panel-heading h2 {
    margin-bottom: 0;
}

.panel-heading a {
    color: var(--brand-primary);
    font-weight: 750;
}

.item-list {
    display: grid;
    gap: 10px;
}

.list-row {
    display: grid;
    gap: 4px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface-subtle);
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.tabs a {
    padding: 8px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    color: var(--muted);
    font-weight: 750;
}

.tabs a.active {
    border-color: var(--brand-primary);
    background: var(--brand-primary-light);
    color: var(--brand-primary);
    box-shadow: inset 0 -3px 0 var(--brand-accent);
}

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

.table-card.flush {
    border: 0;
    box-shadow: none;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th,
td {
    padding: 13px 14px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 0.82rem;
    text-transform: uppercase;
}

td a {
    color: var(--brand-primary);
    font-weight: 750;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 3px 8px;
    border-radius: 8px;
    background: var(--brand-accent-light);
    color: var(--brand-primary);
    font-size: 0.86rem;
    font-weight: 750;
}

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

.detail-list div {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
}

.detail-list dt {
    color: var(--muted);
    font-weight: 750;
}

.detail-list dd {
    margin: 0;
}

.form-panel {
    max-width: 760px;
}

.form-grid,
.form-panel {
    display: grid;
    gap: 16px;
}

.field {
    display: grid;
    gap: 6px;
}

.field label {
    font-weight: 750;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    min-height: 42px;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    color: var(--ink);
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.message-form textarea:focus {
    border-color: var(--brand-primary);
    outline: none;
    box-shadow: none;
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible,
.message-form textarea:focus-visible {
    border-color: var(--brand-primary);
    outline: none;
    box-shadow: none;
}

.field ul {
    display: grid;
    gap: 6px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 0;
    padding: 0;
    list-style: none;
}

.field li label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.field input[type="checkbox"] {
    width: auto;
    min-height: auto;
}

.field-error,
.form-error {
    color: var(--red);
    font-weight: 700;
}

.form-error {
    padding: 10px 12px;
    border: 1px solid rgba(185, 70, 70, 0.35);
    border-radius: 8px;
    background: var(--danger-light);
}

.flash-stack {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.flash {
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.empty-state {
    margin: 0;
    color: var(--muted);
}

.empty-state.compact {
    padding: 12px 0;
}

.project-summary {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    margin-bottom: 18px;
    overflow: hidden;
}

.project-summary div {
    padding: 16px;
    background: var(--surface);
}

.task-board {
    display: grid;
    grid-template-columns: repeat(4, minmax(210px, 1fr));
    gap: 14px;
    align-items: start;
}

.task-column {
    display: grid;
    gap: 10px;
    min-height: 180px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--brand-primary-light);
}

.task-column h2 {
    margin: 0;
    color: var(--brand-primary);
    font-size: 0.95rem;
}

.task-card {
    display: grid;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--line);
    border-left: 4px solid var(--brand-primary);
    border-radius: 8px;
    background: var(--surface);
}

.task-card em {
    color: var(--muted);
    font-size: 0.82rem;
    font-style: normal;
    font-weight: 800;
}

.task-card.priority-high {
    border-left-color: var(--red);
}

.task-card.priority-medium {
    border-left-color: var(--brand-accent);
}

.messages-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 16px;
}

.channel-rail,
.message-panel {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.channel-rail {
    display: grid;
    align-content: start;
    gap: 4px;
    padding: 10px;
}

.channel-rail a {
    padding: 9px 10px;
    border-radius: 8px;
    color: var(--muted);
    font-weight: 750;
}

.channel-rail a.active,
.channel-rail a:hover {
    background: var(--brand-primary-light);
    color: var(--brand-primary);
    box-shadow: inset 3px 0 0 var(--brand-accent);
}

.message-panel {
    display: grid;
    grid-template-rows: minmax(360px, 58vh) auto;
    min-height: 520px;
    overflow: hidden;
}

.message-list {
    overflow-y: auto;
    padding: 18px;
}

.message {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}

.message-meta {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

.message-meta time {
    color: var(--muted);
    font-size: 0.86rem;
}

.message p {
    margin: 6px 0 0;
}

.message-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 14px;
    border-top: 1px solid var(--line);
    background: var(--surface-subtle);
}

.message-form textarea {
    width: 100%;
    min-height: 46px;
    max-height: 160px;
    resize: vertical;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.login-page {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
    background: var(--background);
}

.login-card {
    display: grid;
    gap: 20px;
    width: min(440px, 100%);
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
    border-top: 4px solid var(--brand-accent);
}

.login-brand {
    display: grid;
    place-items: center;
    padding: 8px 0 2px;
}

.login-heading {
    display: grid;
    gap: 4px;
    text-align: center;
}

.login-heading h1 {
    color: var(--brand-primary);
    font-size: 1.45rem;
}

.login-heading p {
    margin: 0;
    color: var(--text-secondary);
    font-weight: 700;
}

@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        height: auto;
        padding: 16px;
    }

    .brand {
        min-height: 64px;
    }

    .brand-logo-horizontal {
        max-width: 220px;
        max-height: 48px;
    }

    .nav-list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        margin-top: 16px;
    }

    .content {
        padding: 22px 16px 40px;
    }

    .stats-grid,
    .cards-grid,
    .action-grid,
    .two-column,
    .project-summary,
    .messages-layout {
        grid-template-columns: 1fr;
    }

    .task-board {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .topbar,
    .page-heading,
    .message-meta,
    .message-form {
        align-items: stretch;
        flex-direction: column;
        grid-template-columns: 1fr;
    }

    .topbar,
    .page-heading {
        display: grid;
    }

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

    .brand-logo-horizontal {
        max-width: 190px;
        max-height: 44px;
    }

    h1 {
        font-size: 1.55rem;
    }

    .field ul {
        grid-template-columns: 1fr;
    }
}