/* === Design tokens === */
:root {
    --navy: #0A1628;
    --teal: #0BBFAA;
    --teal-dark: #0A9985;
    --green: #22C55E;
    --white: #FFFFFF;
    --off-white: #F7F9FC;
    --muted: #64748B;
    --border: #E2E8F0;
    --shadow-card: 0 1px 3px rgba(10,22,40,.08), 0 4px 12px rgba(10,22,40,.06);
    --shadow-card-hover: 0 4px 12px rgba(10,22,40,.12), 0 8px 24px rgba(10,22,40,.1);
    --shadow-teal: 0 0 20px rgba(11,191,170,.25);
    --radius-card: 12px;
    --transition: 200ms ease;
}

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: var(--off-white);
    color: var(--navy);
    font-size: 16px;
    line-height: 1.625;
}

h1, h2, h3, h4 {
    font-family: 'Fraunces', serif;
    letter-spacing: -0.02em;
    line-height: 1.08;
    margin: 0 0 .75rem;
    color: var(--navy);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--teal-dark); }

.invoice-link {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--teal);
    font: inherit;
    cursor: pointer;
    text-align: left;
    word-break: break-word;
}

.invoice-link:hover {
    color: var(--teal-dark);
}

.invoice-link:disabled {
    cursor: wait;
    color: var(--muted);
}

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

.sidebar {
    width: 240px;
    background: var(--navy);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

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

.top-bar {
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: .75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 1rem;
}

.page-body {
    padding: 2rem 1.5rem;
    width: 100%;
}

/* === Sidebar nav === */
.nav-brand {
    display: block;
    padding: 1.5rem 1.25rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
    margin-bottom: .5rem;
    text-decoration: none;
    transition: background var(--transition);
}

.nav-brand:hover {
    background: rgba(255,255,255,.04);
}

.nav-brand-title {
    font-family: 'Fraunces', serif;
    font-size: 1.125rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--teal), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}

.nav-brand-sub {
    font-size: .75rem;
    color: rgba(255,255,255,.4);
    letter-spacing: .04em;
    text-transform: uppercase;
}

.nav-section {
    padding: .25rem .75rem;
    margin-bottom: .25rem;
}

.nav-section-label {
    font-size: .625rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: rgba(255,255,255,.3);
    padding: .75rem .5rem .25rem;
    display: block;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: .625rem;
    padding: .5rem .75rem;
    border-radius: 8px;
    color: rgba(255,255,255,.65) !important;
    font-size: .875rem;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}

.nav-link:hover {
    background: rgba(255,255,255,.07);
    color: var(--white) !important;
}

.nav-link.active {
    background: rgba(11,191,170,.15);
    color: var(--teal) !important;
}

.nav-link-disabled {
    color: rgba(255,255,255,.25) !important;
    cursor: not-allowed;
    pointer-events: none;
}

.nav-icon { font-size: 1rem; width: 1.25rem; text-align: center; }

/* === Cards === */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    transition: box-shadow var(--transition);
}

.card:hover { box-shadow: var(--shadow-card-hover); }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    padding: .5rem 1.125rem;
    border-radius: 999px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: .875rem;
    font-weight: 600;
    letter-spacing: .01em;
    cursor: pointer;
    border: none;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--teal);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--teal);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--teal-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-teal);
    color: var(--white);
}

.btn-secondary {
    background: transparent;
    color: var(--navy);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--teal);
    color: var(--teal);
    background: rgba(11,191,170,.05);
}

.btn-danger {
    background: transparent;
    color: #DC2626;
    border: 1px solid #FECACA;
}

.btn-danger:hover {
    background: #FEF2F2;
    border-color: #DC2626;
    transform: translateY(-1px);
}

.btn-sm {
    padding: .3rem .75rem;
    font-size: .8rem;
}

.btn-icon {
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    color: var(--muted);
    transition: all var(--transition);
    vertical-align: middle;
    line-height: 1;
    flex: 0 0 2.25rem;
}

.btn-icon:hover {
    border-color: var(--teal);
    color: var(--teal);
    background: rgba(11,191,170,.05);
}

.btn:disabled,
.btn-icon:disabled {
    cursor: not-allowed;
    opacity: .45;
    transform: none;
    box-shadow: none;
}

.btn:disabled:hover,
.btn-icon:disabled:hover {
    transform: none;
    box-shadow: none;
}

.btn-icon:disabled:hover {
    background: transparent;
    border-color: var(--border);
    color: var(--muted);
}

.btn-icon.btn-danger:disabled:hover {
    background: transparent;
    border-color: #FECACA;
    color: #DC2626;
}

/* === Forms === */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: .875rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: .375rem;
}

.form-control, .form-select {
    width: 100%;
    padding: .5rem .75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: .9375rem;
    color: var(--navy);
    background: var(--white);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-control:focus, .form-select:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(11,191,170,.15);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

/* === Table === */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-card);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9375rem;
}

thead {
    background: var(--off-white);
}

th {
    padding: .75rem 1rem;
    text-align: left;
    font-size: .8125rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
}

td {
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--navy);
    vertical-align: middle;
}

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

tbody tr:hover { background: rgba(11,191,170,.03); }

/* === Page header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 { margin: 0; }

/* === Badges === */
.badge {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
    line-height: 1.3;
    vertical-align: middle;
}

.table-badge {
    max-width: min(16rem, 32vw);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.badge-teal  { background: rgba(11,191,170,.12); color: var(--teal-dark); }
.badge-navy  { background: rgba(10,22,40,.08);  color: var(--navy); }
.badge-slate { background: rgba(100,116,139,.12); color: var(--muted); }

/* === Alerts === */
.alert {
    padding: .75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: .9375rem;
}

.alert-success { background: #F0FDF4; border: 1px solid #BBF7D0; color: #166534; }
.alert-danger  { background: #FEF2F2; border: 1px solid #FECACA; color: #991B1B; }
.alert-info    { background: rgba(11,191,170,.08); border: 1px solid rgba(11,191,170,.25); color: var(--teal-dark); }

/* === User chip === */
.user-chip {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .875rem;
    color: var(--muted);
}

.user-avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--teal), var(--green));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: .75rem;
    font-weight: 700;
}

/* === Gradient text === */
.gradient-text {
    background: linear-gradient(135deg, var(--teal), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === Modal === */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(10,22,40,.5);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-dialog {
    background: var(--white);
    border-radius: var(--radius-card);
    box-shadow: 0 24px 64px rgba(10,22,40,.2);
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 { margin: 0; }

.modal-body { padding: 1.5rem; }

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: .75rem;
    justify-content: flex-end;
}

/* === Loading === */
.app-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.loading-progress {
    display: block;
    width: 5rem;
    height: 5rem;
}

.loading-progress circle {
    fill: none;
    stroke: var(--border);
    stroke-width: 0.6rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--teal);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.05s ease-in-out;
}

.loading-progress-text {
    margin-top: 1rem;
    font-size: .875rem;
    color: var(--muted);
}

.loading-progress-text::after {
    content: var(--blazor-load-percentage-text, "Laden...");
}

/* === Blazor error UI === */
#blazor-error-ui {
    background: #FEF2F2;
    border-top: 2px solid #DC2626;
    bottom: 0;
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: .75rem 1.5rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: #991B1B;
    font-size: .875rem;
}

#blazor-error-ui .reload { color: #DC2626; font-weight: 600; margin-left: .5rem; }
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: 1rem; top: .75rem; }

/* === Utility === */
.text-muted { color: var(--muted); }
.text-sm { font-size: .875rem; }
.mt-1 { margin-top: .25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: .75rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.actions { display: flex; gap: .375rem; align-items: center; }

td.actions {
    display: table-cell;
    text-align: right;
    white-space: nowrap;
    width: 1%;
}

td.actions .btn-icon + .btn-icon { margin-left: .375rem; }

.table-icon-cell {
    white-space: nowrap;
}

.table-icon-cell .badge {
    margin-left: .375rem;
}

.amount { font-family: 'Plus Jakarta Sans', monospace; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* === Filter bar === */
.filter-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: .375rem;
    margin-bottom: 1rem;
    padding: .625rem .875rem;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
}

.filter-preset-btn {
    padding: .25rem .65rem;
    border-radius: 999px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: .8125rem;
    font-weight: 600;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
}

.filter-preset-btn:hover {
    border-color: var(--teal);
    color: var(--teal-dark);
    background: rgba(11,191,170,.05);
}

.filter-preset-btn.active {
    background: rgba(11,191,170,.12);
    border-color: var(--teal);
    color: var(--teal-dark);
}

.filter-sep {
    width: 1px;
    height: 1.25rem;
    background: var(--border);
    flex-shrink: 0;
    margin: 0 .125rem;
}

.filter-clear-btn {
    padding: .25rem .5rem;
    border-radius: 999px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: .8125rem;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    white-space: nowrap;
    transition: color var(--transition);
    margin-left: auto;
}

.filter-clear-btn:hover { color: #DC2626; }

.form-control-sm,
.form-select-sm {
    padding: .3rem .6rem;
    font-size: .875rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    color: var(--navy);
    background: var(--white);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control-sm:focus,
.form-select-sm:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(11,191,170,.15);
}

/* === Sortable headers === */
.sortable-th {
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.sortable-th:hover {
    color: var(--teal-dark);
}

.sort-arrow {
    font-size: .65rem;
    margin-left: .25rem;
    color: var(--teal-dark);
}

.sort-arrow-inactive {
    color: var(--border);
}

/* === Totals row === */
tfoot .totals-row td {
    border-top: 2px solid var(--border);
    border-bottom: none;
    background: var(--off-white);
    font-weight: 700;
    font-size: .875rem;
}

/* === Pagination === */
.pagination-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: .75rem;
    flex-wrap: wrap;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.pagination-bar .form-select-sm {
    width: auto;
}