:root {
    --cl-bg: #f4f5f7;
    --cl-surface: #ffffff;
    --cl-border: #d8dce3;
    --cl-text: #1a1f2e;
    --cl-muted: #5c6578;
    --cl-primary: #2c5282;
    --cl-primary-hover: #234163;
    --cl-danger: #9b2c2c;
    --cl-danger-hover: #7b2323;
    --cl-sidebar: #1e2533;
    --cl-sidebar-text: #c5cad4;
    --cl-sidebar-active: #2c5282;
    --cl-radius: 2px;
    --cl-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--cl-font);
    font-size: 0.9375rem;
    color: var(--cl-text);
    background: var(--cl-bg);
    line-height: 1.5;
}

a {
    color: var(--cl-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Layout */
.app-shell {
    display: flex;
    min-height: 100vh;
}

.app-sidebar {
    width: 220px;
    flex-shrink: 0;
    background: var(--cl-sidebar);
    color: var(--cl-sidebar-text);
    display: flex;
    flex-direction: column;
}

.app-sidebar__brand {
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 1rem;
    color: #fff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    letter-spacing: 0.02em;
}

.app-sidebar__nav {
    list-style: none;
    margin: 0;
    padding: 0.75rem 0;
}

.app-sidebar__nav--footer {
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.app-sidebar__nav a {
    display: block;
    padding: 0.5rem 1.25rem;
    color: var(--cl-sidebar-text);
    text-decoration: none;
    border-left: 3px solid transparent;
}

.app-sidebar__nav a:hover,
.app-sidebar__nav a.is-active {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    text-decoration: none;
}

.app-sidebar__nav a.is-active {
    border-left-color: var(--cl-sidebar-active);
    background: rgba(44, 82, 130, 0.25);
}

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.app-topbar {
    background: var(--cl-surface);
    border-bottom: 1px solid var(--cl-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-topbar__title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
}

.app-topbar__user {
    color: var(--cl-muted);
    font-size: 0.875rem;
}

.app-content {
    padding: 1.5rem;
    flex: 1;
}

.app-footer {
    padding: 0.75rem 1.5rem;
    font-size: 0.8125rem;
    color: var(--cl-muted);
    border-top: 1px solid var(--cl-border);
    background: var(--cl-surface);
}

/* Guest (login) */
.guest-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.guest-card {
    width: 100%;
    max-width: 400px;
    background: var(--cl-surface);
    border: 1px solid var(--cl-border);
    padding: 2rem;
}

.guest-card h1 {
    margin: 0 0 0.25rem;
    font-size: 1.375rem;
}

.guest-card .subtitle {
    color: var(--cl-muted);
    margin: 0 0 1.5rem;
    font-size: 0.875rem;
}

/* Cards & tables */
.card-panel {
    background: var(--cl-surface);
    border: 1px solid var(--cl-border);
    padding: 1.25rem;
}

.table-clean {
    width: 100%;
    border-collapse: collapse;
}

.table-clean th,
.table-clean td {
    padding: 0.625rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--cl-border);
}

.table-clean th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--cl-muted);
    font-weight: 600;
}

.table-clean tr:last-child td {
    border-bottom: none;
}

/* Forms */
.form-label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-control,
.form-select {
    display: block;
    width: 100%;
    padding: 0.5rem 0.625rem;
    font-size: 0.9375rem;
    border: 1px solid var(--cl-border);
    border-radius: var(--cl-radius);
    background: #fff;
    color: var(--cl-text);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--cl-primary);
    box-shadow: 0 0 0 2px rgba(44, 82, 130, 0.15);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
}

.form-check input {
    margin: 0;
}

.field-error {
    color: var(--cl-danger);
    font-size: 0.8125rem;
    margin-top: 0.25rem;
}

.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1rem; }
.d-flex { display: flex; }
.gap-2 { gap: 0.5rem; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.text-muted { color: var(--cl-muted); }
.text-end { text-align: right; }

/* Buttons — sharp corners */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: var(--cl-radius);
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover {
    text-decoration: none;
}

.btn-primary {
    background: var(--cl-primary);
    color: #fff;
    border-color: var(--cl-primary);
}

.btn-primary:hover {
    background: var(--cl-primary-hover);
    border-color: var(--cl-primary-hover);
    color: #fff;
}

.btn-secondary {
    background: #fff;
    color: var(--cl-text);
    border-color: var(--cl-border);
}

.btn-secondary:hover {
    background: var(--cl-bg);
    color: var(--cl-text);
}

.btn-danger {
    background: var(--cl-danger);
    color: #fff;
    border-color: var(--cl-danger);
}

.btn-danger:hover {
    background: var(--cl-danger-hover);
    border-color: var(--cl-danger-hover);
    color: #fff;
}

.btn-sm {
    padding: 0.25rem 0.625rem;
    font-size: 0.8125rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border: 1px solid var(--cl-border);
    border-radius: var(--cl-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: #edf7ed;
    border-color: #b8dfc0;
    color: #1e4620;
}

.alert-danger {
    background: #fdf0f0;
    border-color: #e8c4c4;
    color: var(--cl-danger);
}

/* Badge */
.badge-role {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--cl-bg);
    border: 1px solid var(--cl-border);
    border-radius: var(--cl-radius);
}

/* Permissions matrix */
.perm-role-block {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--cl-border);
}

.perm-role-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.perm-role-block h3 {
    margin: 0 0 0.75rem;
    font-size: 1rem;
}

/* Settings tabs */
.settings-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin: -0.5rem 0 1.5rem;
    border-bottom: 1px solid var(--cl-border);
    background: var(--cl-surface);
}

.settings-tabs__link {
    display: inline-block;
    padding: 0.75rem 1rem;
    color: var(--cl-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-weight: 500;
    font-size: 0.875rem;
}

.settings-tabs__link:hover {
    color: var(--cl-text);
    text-decoration: none;
}

.settings-tabs__link.is-active {
    color: var(--cl-primary);
    border-bottom-color: var(--cl-primary);
}

/* Workspace icons */
.workspace-icon {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    vertical-align: middle;
    color: var(--cl-primary);
}

.workspace-icon--table {
    width: 1.125rem;
    height: 1.125rem;
    margin-right: 0.5rem;
}

.workspace-name-cell {
    display: inline-flex;
    align-items: center;
}

.workspace-icon-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(2.75rem, 1fr));
    gap: 0.5rem;
    max-width: 28rem;
}

.workspace-icon-picker__option {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border: 1px solid var(--cl-border);
    border-radius: var(--cl-radius);
    background: var(--cl-surface);
    color: var(--cl-muted);
    cursor: pointer;
}

.workspace-icon-picker__option:hover {
    border-color: var(--cl-primary);
    color: var(--cl-primary);
}

.workspace-icon-picker__option.is-selected {
    border-color: var(--cl-primary);
    background: #e8eef5;
    color: var(--cl-primary);
    box-shadow: inset 0 0 0 1px var(--cl-primary);
}