:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #667085;
  --paper: #f7f8fb;
  --panel: #ffffff;
  --line: #d8dee8;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #13795b;
  --amber: #a15c00;
  --red: #b42318;
  --mint: #e7f6ef;
  --sky: #eaf2ff;
  --sun: #fff4dc;
  --rose: #fee9e7;
  --shadow: 0 18px 45px rgba(23, 32, 51, 0.08);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(37, 99, 235, 0.08), transparent 260px),
    var(--paper);
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.7rem 0.95rem;
  color: var(--ink);
  background: #ffffff;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background 140ms ease;
}

button:hover {
  border-color: #a9b6ca;
  transform: translateY(-1px);
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.24);
  outline-offset: 2px;
}

.primary {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

.primary:hover {
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

.app-header {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 18px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0.35rem;
  font-size: 1.18rem;
}

h3 {
  margin: 0.45rem 0 0;
  font-size: 1.05rem;
  line-height: 1.25;
}

.header-actions,
.form-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 48px;
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(0, 1.25fr);
  gap: 18px;
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.output-panel {
  grid-column: 1 / -1;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.5;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 760;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.78rem 0.82rem;
  color: var(--ink);
  background: #ffffff;
}

textarea {
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.stats div {
  min-height: 86px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px;
  background: #fbfcff;
}

.stats span {
  display: block;
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  font-weight: 850;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.stats small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  line-height: 1.3;
}

.empty {
  border: 1px dashed #b8c2d4;
  border-radius: 8px;
  padding: 18px;
  color: var(--muted);
  background: #fbfcff;
}

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

.return-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #ffffff;
}

.return-card.is-done {
  opacity: 0.68;
}

.card-main {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.deadline {
  margin-bottom: 0;
  color: var(--muted);
  font-weight: 760;
  text-align: right;
  white-space: nowrap;
}

.status {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 840;
}

.status-open {
  color: var(--blue-dark);
  background: var(--sky);
}

.status-soon {
  color: var(--amber);
  background: var(--sun);
}

.status-urgent,
.status-expired {
  color: var(--red);
  background: var(--rose);
}

.status-done {
  color: var(--green);
  background: var(--mint);
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 10px;
}

.meta-grid span {
  display: grid;
  gap: 4px;
  min-height: 58px;
  border-radius: 8px;
  padding: 10px;
  color: var(--muted);
  background: #f5f8fc;
  overflow-wrap: anywhere;
}

.meta-grid strong {
  color: var(--ink);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

.next-action {
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  margin: 0 0 12px;
  padding: 10px 12px;
  color: #24344f;
  background: #f5f8ff;
  line-height: 1.45;
}

.next-action strong {
  display: block;
  margin-bottom: 3px;
  color: var(--blue-dark);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.notes {
  display: grid;
  gap: 6px;
  margin: 0 0 14px;
  color: var(--muted);
  line-height: 1.45;
}

.notes p {
  margin-bottom: 0;
}

.checklist {
  max-height: 340px;
  overflow: auto;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  color: #21304a;
  background: #f9fbff;
  white-space: pre-wrap;
  line-height: 1.5;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: min(360px, calc(100vw - 36px));
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: #ffffff;
  background: #172033;
  box-shadow: 0 16px 40px rgba(23, 32, 51, 0.22);
}

@media (max-width: 900px) {
  .app-header {
    align-items: stretch;
    flex-direction: column;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 640px) {
  .app-header,
  .app-shell {
    width: min(100% - 20px, 1180px);
  }

  .app-header {
    padding-top: 18px;
  }

  .panel {
    padding: 15px;
  }

  .form-grid,
  .stats,
  .meta-grid {
    grid-template-columns: 1fr;
  }

  .card-main {
    align-items: start;
    flex-direction: column;
  }

  .deadline {
    text-align: left;
    white-space: normal;
  }

  .header-actions button,
  .form-actions button,
  .card-actions button {
    flex: 1 1 140px;
  }
}