:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f3f6fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
}

.app {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #566277;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .8rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.intro {
  max-width: 760px;
  color: #566277;
  line-height: 1.6;
}

.settings,
.card,
.results {
  background: white;
  border: 1px solid #dde5f2;
  box-shadow: 0 12px 30px rgba(29, 45, 68, .08);
}

.version-card {
  border-radius: 18px;
  padding: 14px 18px;
  min-width: 130px;
  text-align: center;
}

.version-card span {
  display: block;
  color: #566277;
  font-size: .82rem;
}

.version-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.25rem;
}

.settings {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 16px;
  border-radius: 18px;
  padding: 16px;
  margin-bottom: 24px;
}

.settings label {
  display: grid;
  gap: 8px;
  font-size: .9rem;
  color: #566277;
}

.settings input,
.settings select {
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
  font: inherit;
  color: #172033;
  background: white;
}

.drop-zone {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 190px;
  border: 2px dashed #9aa8bd;
  border-radius: 24px;
  background: white;
  cursor: pointer;
  transition: .2s ease;
}

.drop-zone.dragover {
  border-color: #2f6feb;
  background: #edf4ff;
}

.drop-zone input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.drop-content {
  display: grid;
  gap: 8px;
  text-align: center;
  color: #566277;
}

.drop-content strong {
  color: #172033;
  font-size: 1.25rem;
}

.error {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #fff1f2;
  color: #be123c;
  border: 1px solid #fecdd3;
}

.hidden { display: none !important; }

.format-hint {
  color: #566277;
  min-height: 22px;
}

.summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.card {
  border-radius: 18px;
  padding: 18px;
}

.card span {
  display: block;
  color: #566277;
  margin-bottom: 8px;
}

.card strong {
  font-size: 1.8rem;
}

.saldo-card strong.positive { color: #15803d; }
.saldo-card strong.negative { color: #b91c1c; }

.results {
  border-radius: 24px;
  padding: 22px;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.table-header h2 {
  margin: 0;
}

button {
  border: none;
  border-radius: 12px;
  padding: 10px 14px;
  background: #172033;
  color: white;
  font: inherit;
  cursor: pointer;
}

button:hover { opacity: .9; }

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: .95rem;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid #e5eaf3;
  text-align: left;
  white-space: nowrap;
}

th {
  color: #566277;
  font-weight: 700;
  background: #f8fafc;
}

tr.holiday-row td {
  background: #fff7ed;
}

tr.weekend-row td {
  background: #f8fafc;
}

.positive { color: #15803d; font-weight: 700; }
.negative { color: #b91c1c; font-weight: 700; }
.neutral { color: #566277; font-weight: 700; }

.details {
  margin-top: 20px;
}

.details summary {
  cursor: pointer;
  font-weight: 700;
  margin-bottom: 14px;
}


.app-footer {
  position: fixed;
  right: 16px;
  bottom: 10px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  font-size: 12px;
  color: #6b7280;
  background: rgba(255, 255, 255, .85);
  border: 1px solid #e5eaf3;
  border-radius: 999px;
  padding: 5px 10px;
  box-shadow: 0 6px 18px rgba(29, 45, 68, .08);
  backdrop-filter: blur(6px);
}

.app-footer a {
  color: inherit;
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 820px) {
  .hero { align-items: start; flex-direction: column; }
  .settings { grid-template-columns: 1fr; }
  .summary { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 540px) {
  .summary { grid-template-columns: 1fr; }
  .app-footer { right: 8px; bottom: 8px; font-size: 11px; }
}