:root {
  color-scheme: light;
  --background: #f3f3f1;
  --panel: #ffffff;
  --border: #d7d7d2;
  --border-strong: #8d8d86;
  --text: #191919;
  --muted: #5f5f59;
  --accent: #161616;
  --success: #e9f5ed;
  --success-text: #235a37;
  --error: #f8e8e8;
  --error-text: #8b2e2e;
  --pending-bg: #f2efe6;
  --pending-text: #6d5721;
  --paid-bg: #e8f2ea;
  --paid-text: #2d5b39;
  --cancelled-bg: #f1ecec;
  --cancelled-text: #6b4040;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
  font-family: "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #fafaf8 0%, var(--background) 100%);
  color: var(--text);
}

a {
  color: inherit;
}

main,
section,
form {
  width: 100%;
}

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 64px;
}

.narrow-shell {
  max-width: 560px;
}

.app-shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 28px 20px;
  background: #ffffff;
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
}

.sidebar-brand {
  padding: 0 4px 8px;
  border-bottom: 1px solid var(--border);
}

.sidebar-eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.sidebar-title {
  margin: 4px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sidebar-link {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.sidebar-link:hover {
  background: #f5f5f2;
  color: var(--text);
}

.sidebar-link[aria-current="page"] {
  background: var(--accent);
  color: #ffffff;
}

.sidebar-footer {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.sidebar-user {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.button-block {
  width: 100%;
}

.content-area {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 40px 32px 64px;
  max-width: 1180px;
  width: 100%;
}

@media (max-width: 880px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
  }

  .sidebar-brand {
    border-bottom: none;
    padding: 0;
  }

  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    flex: 1 1 100%;
    gap: 6px;
  }

  .sidebar-footer {
    flex-direction: row;
    align-items: center;
    border-top: none;
    padding-top: 0;
    gap: 12px;
    flex-wrap: wrap;
  }

  .content-area {
    padding: 24px 16px 48px;
  }
}

.panel,
.invoice-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.panel {
  padding: 28px;
}

.panel-header {
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 8px;
  font-size: clamp(2rem, 4vw, 2.8rem);
}

h2 {
  margin-bottom: 10px;
  font-size: 1.2rem;
}

.muted,
.helper-text {
  color: var(--muted);
}

.helper-text {
  font-size: 0.95rem;
}

.toolbar,
.actions,
.invoice-header,
.invoice-payment-box {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
}

.actions form {
  width: auto;
}

.stack {
  display: grid;
  gap: 18px;
}

.form-grid,
.stats-grid,
.invoice-grid {
  display: grid;
  gap: 18px;
}

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

.invoice-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 28px 0;
}

.invoice-grid-span {
  grid-column: 1 / -1;
}

.invoice-label,
.stat-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fcfcfb;
}

.stat-card strong {
  font-size: 2rem;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
}

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

input,
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
}

textarea {
  resize: vertical;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.button-danger {
  background: #6d2d2d;
  border-color: #6d2d2d;
}

.button-small {
  padding: 8px 12px;
}

.alert {
  margin-bottom: 20px;
  padding: 14px 16px;
  border-radius: 14px;
}

.alert-error {
  background: var(--error);
  color: var(--error-text);
}

.alert-success {
  background: var(--success);
  color: var(--success-text);
}

.error-list {
  margin: 12px 0 0;
  padding-left: 20px;
}

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

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

th,
td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

thead th {
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.status-pending {
  background: var(--pending-bg);
  color: var(--pending-text);
}

.status-paid {
  background: var(--paid-bg);
  color: var(--paid-text);
}

.status-cancelled {
  background: var(--cancelled-bg);
  color: var(--cancelled-text);
}

.empty-state {
  padding: 36px 20px;
  border: 1px dashed var(--border-strong);
  border-radius: 16px;
  text-align: center;
}

.invoice-page {
  background: linear-gradient(180deg, #efefec 0%, #f9f9f7 100%);
}

.invoice-shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.invoice-card {
  padding: 32px;
}

.invoice-total {
  font-size: 2rem;
}

.status-block {
  display: grid;
  gap: 12px;
  justify-items: end;
}

.invoice-description {
  line-height: 1.7;
  white-space: pre-wrap;
}

.invoice-section {
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid var(--border);
}

.terms-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

code {
  padding: 2px 6px;
  border-radius: 8px;
  background: #f1f1ee;
}

@media (max-width: 720px) {
  .toolbar,
  .actions,
  .invoice-header,
  .invoice-payment-box {
    flex-direction: column;
    align-items: stretch;
  }

  .status-block {
    justify-items: start;
  }
}

.panel-tight {
  padding: 24px 28px;
}

.section-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.kpi-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-top: 8px;
}

.kpi-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fcfcfb;
}

.kpi-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.kpi-value {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.kpi-meta {
  font-size: 0.85rem;
  color: var(--muted);
}

.muted-table th,
.muted-table td {
  padding: 10px 12px;
}

.settings-fieldset {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
}

.settings-fieldset legend {
  padding: 0 8px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.toggle-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
}

.toggle-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  background: #fff;
  font-weight: 600;
}

.toggle-option input {
  width: auto;
  margin: 0;
  accent-color: var(--accent);
}

.settings-divider {
  margin: 28px 0;
  border-top: 1px solid var(--border);
}

.test-result {
  margin-bottom: 20px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fcfcfb;
}

.test-result-ok {
  border-color: #b9d6c1;
  background: var(--success);
  color: var(--success-text);
}

.test-result-fail {
  border-color: #d8b6b6;
  background: var(--error);
  color: var(--error-text);
}

.test-result-header {
  margin-bottom: 10px;
  font-weight: 700;
}

.test-result-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 4px;
}

.test-ok {
  font-weight: 700;
  color: var(--paid-text);
}

.test-fail {
  font-weight: 700;
  color: var(--error-text);
}

.test-store {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.test-store-list {
  margin: 6px 0 0;
  padding-left: 20px;
  color: var(--text);
  display: grid;
  gap: 2px;
}