:root {
  --bg: #f5efe6;
  --panel: #fffaf4;
  --ink: #1f2933;
  --muted: #6b7280;
  --line: #dccfbe;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --danger: #b42318;
  --shadow: 0 20px 45px rgba(71, 56, 35, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.14), transparent 28%),
    linear-gradient(180deg, #efe4d4 0%, #f8f4ed 100%);
  min-height: 100vh;
}

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

button,
input,
select {
  font: inherit;
}

.shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 18px 48px;
}

.topbar,
.auth-card,
.card,
.invoice-card {
  background: rgba(255, 250, 244, 0.92);
  border: 1px solid rgba(220, 207, 190, 0.9);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.topbar,
.page-head,
.items-header,
.invoice-card-head,
.topbar-actions,
.topnav,
.item-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar,
.auth-card,
.card,
.invoice-card {
  border-radius: 14px;
}

.topbar {
  padding: 16px 20px;
  margin-bottom: 18px;
}

.topbar h1,
.auth-card h1,
.page-head h2,
.invoice-card h3,
.item-card h4 {
  margin: 0;
}

.topbar p,
.subtitle,
.muted,
.hint,
.eyebrow {
  margin: 0;
  color: var(--muted);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
}

.auth-card {
  width: min(480px, 100%);
  margin: 64px auto 0;
  padding: 32px;
}

.card {
  padding: 18px;
}

.stack {
  display: grid;
  gap: 12px;
}

.stack-compact {
  display: grid;
  gap: 6px;
}

.grid {
  display: grid;
  gap: 10px;
}

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

.grid-3 {
  grid-template-columns: minmax(0, 2fr) minmax(180px, 220px) 160px;
}

.grid-4 {
  grid-template-columns: minmax(0, 2fr) 140px 180px minmax(220px, 1.2fr);
}

.grid-5 {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 5px;
  font-size: 14px;
  font-weight: 600;
}

input,
select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
}

.file-remove-line {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0;
  font-weight: 500;
  color: var(--muted);
}

.file-remove-button {
  justify-self: start;
  width: auto;
  padding: 5px 10px;
  min-height: 28px;
  font-size: 13px;
}

button,
.primary-link,
.secondary-link,
.secondary-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 6px 11px;
  min-height: 30px;
  font-size: 14px;
  line-height: 1.1;
  cursor: pointer;
  transition: 0.2s ease;
}

button,
.primary-link {
  border: none;
  background: var(--accent);
  color: #fff;
}

button:hover,
.primary-link:hover {
  background: var(--accent-dark);
}

.secondary-link,
.secondary-button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
}

.secondary-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.danger-button {
  border: none;
  background: #b42318;
  color: #fff;
}

.danger-button:hover {
  background: #8f1b13;
}

.error-banner {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
}

.flash-banner {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 14px;
}

.flash-success {
  background: rgba(15, 118, 110, 0.12);
  color: var(--accent-dark);
}

.flash-error {
  background: rgba(180, 35, 24, 0.08);
  color: var(--danger);
}

.page-head {
  margin-bottom: 12px;
}

.filter-panel {
  display: none;
  margin-bottom: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 250, 244, 0.7);
}

.filter-panel.is-open {
  display: block;
}

.filter-form {
  display: grid;
  gap: 10px;
  grid-template-columns: 120px minmax(180px, 1.4fr) minmax(160px, 1fr) 140px 140px auto;
  align-items: end;
}

.filter-actions {
  display: flex;
  gap: 8px;
  align-items: end;
}

.invoice-list {
  display: grid;
  gap: 12px;
}

.topnav a {
  color: var(--muted);
  font-weight: 600;
}

.topnav a:hover {
  color: var(--accent-dark);
}

.invoice-card {
  padding: 14px;
}

.invoice-card-meta {
  display: grid;
  gap: 6px;
}

.invoice-date-inline {
  font-size: 18px;
  font-weight: 500;
  color: var(--muted);
}

.action-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.action-row .secondary-link,
.action-row .danger-button,
.action-row .secondary-button {
  padding: 6px 12px;
  min-height: 32px;
  font-size: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 8px 8px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.item-card {
  padding: 12px;
}

.item-row {
  border: 1px solid rgba(220, 207, 190, 0.8);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.55);
}

.write-off-block {
  display: grid;
  gap: 8px;
  padding-top: 8px;
}

.write-off-row {
  align-items: end;
}

.write-off-actions {
  display: flex;
  align-items: flex-end;
}

.file-hint-card,
.file-hint-row {
  display: grid;
  gap: 8px;
}

.file-hint-card {
  align-content: end;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px dashed var(--line);
  background: rgba(255, 255, 255, 0.45);
  font-size: 14px;
}

.item-actions {
  display: flex;
  justify-content: flex-start;
}

#add-item-button {
  min-width: 144px;
}

.users-layout {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
}

@media (max-width: 1100px) {
  .filter-form,
  .grid-5,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .grid-5,
  .filter-form,
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .topbar,
  .page-head,
  .invoice-card-head,
  .topbar-actions,
  .items-header,
  .topnav,
  .item-card-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .users-layout {
    grid-template-columns: 1fr;
  }

  .auth-card,
  .card,
  .topbar,
  .invoice-card {
    padding: 22px;
  }
}