:root {
  --background: #f7f5f0;
  --surface: #ffffff;
  --surface-soft: #fbfaf7;
  --line: #d8d1c3;
  --line-strong: #cfc6b6;
  --ink: #1d2a2a;
  --muted: #5b6765;
  --accent: #1f3d3a;
  --accent-soft: #e5f0ed;
  --warning: #b96d32;
  --warning-soft: #fff4e6;
  --danger: #8a3f22;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
}

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family:
    Arial,
    Helvetica,
    sans-serif;
}

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

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

a {
  text-decoration: none;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  color: #465250;
  font-size: 0.82rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 0.5rem;
  background: var(--surface-soft);
  color: #172423;
  outline: none;
  padding: 0.78rem 0.85rem;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #416761;
  background: var(--surface);
  box-shadow: 0 0 0 3px rgba(65, 103, 97, 0.16);
}

textarea {
  resize: vertical;
}

.app-shell {
  min-height: 100vh;
}

.top-band {
  border-bottom: 1px solid var(--line);
  background: var(--surface-soft);
}

.top-grid,
.content-band {
  width: min(100%, 82rem);
  margin: 0 auto;
  padding-inline: 1.25rem;
}

.top-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(21rem, 0.85fr);
  gap: 2rem;
  padding-block: 2rem;
}

.intro {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
}

.eyebrow {
  margin: 0;
  color: #6f7f7d;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  max-width: 45rem;
  margin: 0.75rem 0 0;
  color: #142221;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.08;
}

.lead {
  max-width: 41rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.metric {
  min-height: 5.25rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
  padding: 0.95rem;
}

.metric span {
  display: block;
  color: #66716f;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 0.45rem;
  color: #162927;
  font-size: clamp(1.15rem, 1.5vw, 1.7rem);
  font-weight: 850;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.invoice-form {
  border: 1px solid #d3cbbb;
  border-radius: 0.5rem;
  background: var(--surface);
  padding: 1.25rem;
  box-shadow: 0 1px 7px rgba(31, 61, 58, 0.07);
}

.form-grid {
  display: grid;
  gap: 1rem;
}

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

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button-row.compact {
  gap: 0.5rem;
}

.primary-button,
.secondary-button {
  min-height: 2.75rem;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  padding: 0.72rem 1rem;
  font-weight: 800;
  transition:
    transform 160ms ease,
    background 160ms ease,
    border-color 160ms ease;
}

.primary-button {
  background: var(--accent);
  color: #ffffff;
}

.secondary-button {
  border-color: #bfb6a6;
  background: #f8f6f0;
  color: var(--accent);
}

.primary-button:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

.small-status {
  margin: 0;
  color: #6c7472;
  font-size: 0.9rem;
}

.reminder-settings {
  display: grid;
  gap: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface-soft);
  padding: 0.95rem;
}

.reminder-settings[hidden] {
  display: none;
}

.content-band {
  padding-block: 1.5rem 2.5rem;
}

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

.segmented-control {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  width: min(100%, 31rem);
  border: 1px solid var(--line-strong);
  border-radius: 0.5rem;
  background: #ebe6dc;
  padding: 0.2rem;
}

.segmented-control button {
  min-height: 2.35rem;
  border: 0;
  border-radius: 0.38rem;
  background: transparent;
  color: #45504e;
  font-weight: 800;
}

.segmented-control button.active {
  background: var(--surface);
  color: #193431;
  box-shadow: 0 1px 4px rgba(31, 61, 58, 0.12);
}

.sort-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sort-actions select {
  min-width: 11rem;
}

.compact-label {
  margin: 0;
}

.invoice-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.sync-status {
  margin: 0.85rem 0 0;
  color: #64706d;
  font-size: 0.88rem;
  font-weight: 700;
}

.sync-status.error {
  color: var(--danger);
}

.invoice-row {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(20rem, 0.9fr) auto;
  gap: 1rem;
  align-items: center;
  border: 1px solid var(--line);
  border-left: 0.35rem solid #7d8d8a;
  border-radius: 0.5rem;
  background: var(--surface);
  padding: 1rem;
}

.invoice-row.urgent {
  border-left-color: var(--warning);
  background: var(--warning-soft);
}

.invoice-row.paid {
  border-left-color: #91a29e;
  background: #f1f3ef;
  color: #53605e;
}

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

.invoice-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.invoice-row h2 {
  margin: 0;
  color: #172423;
  font-size: 1.08rem;
  font-weight: 850;
  line-height: 1.3;
}

.invoice-number,
.invoice-note {
  margin: 0;
  color: #687270;
  font-size: 0.9rem;
}

.invoice-number {
  margin-top: 0.35rem;
}

.invoice-note {
  margin-top: 0.75rem;
  color: #4d5957;
  line-height: 1.55;
}

.status-pill {
  border-radius: 999px;
  background: var(--accent-soft);
  color: #234f49;
  font-size: 0.78rem;
  font-weight: 850;
  padding: 0.28rem 0.62rem;
}

.urgent .status-pill {
  background: #f8e4cd;
  color: #7a421b;
}

.paid .status-pill {
  background: #e2e6df;
  color: #55615f;
}

.invoice-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.invoice-facts div {
  min-height: 4.25rem;
  border: 1px solid #e3ddcf;
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.72);
  padding: 0.72rem;
}

.invoice-facts span {
  display: block;
  color: #6b7472;
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
}

.invoice-facts strong {
  display: block;
  margin-top: 0.28rem;
  color: #1b2d2b;
  font-size: 0.95rem;
  overflow-wrap: anywhere;
}

.invoice-actions {
  display: flex;
  gap: 0.45rem;
}

.icon-button {
  display: grid;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 1px solid #bfc8c5;
  border-radius: 0.45rem;
  background: #f7fbfa;
  color: #1e4c45;
  font-size: 1.1rem;
  font-weight: 900;
}

.icon-button:hover {
  background: #e8f2ef;
}

.icon-button.danger {
  border-color: #e0b9a5;
  background: #fff8f4;
  color: var(--danger);
}

.icon-button.danger:hover {
  background: #fae8de;
}

.empty-state {
  border: 1px dashed #bdb4a4;
  border-radius: 0.5rem;
  background: var(--surface-soft);
  padding: 2rem;
  color: #606b69;
  font-weight: 700;
  text-align: center;
}

@media (max-width: 980px) {
  .top-grid,
  .toolbar,
  .sort-actions {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .top-grid {
    display: grid;
  }

  .toolbar,
  .sort-actions {
    flex-direction: column;
  }

  .sort-actions {
    width: 100%;
  }

  .invoice-row {
    grid-template-columns: 1fr;
  }

  .invoice-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .top-grid,
  .content-band {
    padding-inline: 1rem;
  }

  .metrics,
  .two-columns,
  .invoice-facts {
    grid-template-columns: 1fr;
  }

  .segmented-control {
    width: 100%;
  }

  .segmented-control button {
    font-size: 0.88rem;
  }

  .primary-button,
  .secondary-button,
  .sort-actions select {
    width: 100%;
  }
}