:root {
  --bg: #0b1f2a;
  --bg-soft: #102a38;
  --card: #14323f;
  --card-2: #1a3d4c;
  --line: #234a5a;
  --txt: #e8f1f4;
  --muted: #8fb0bd;
  --accent: #19b3a6;
  --accent-2: #2d9cdb;
  --warn: #e0a458;
  --danger: #e06a6a;
  --ok: #4fc78a;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(160deg, var(--bg), #081820);
  color: var(--txt);
  min-height: 100vh;
}
header {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(8,24,32,.6);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
  gap: 12px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand h1 { font-size: 18px; margin: 0; font-weight: 700; letter-spacing: .3px; }
.brand .sub { font-size: 12px; color: var(--muted); }
.logo {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center; font-size: 20px;
}
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
nav { display: flex; gap: 4px; padding: 12px 24px 0; flex-wrap: wrap; }
nav button {
  background: transparent; border: none; color: var(--muted);
  padding: 10px 16px; border-radius: 10px 10px 0 0; cursor: pointer;
  font-size: 14px; font-weight: 600; border-bottom: 2px solid transparent;
}
nav button:hover { color: var(--txt); background: var(--bg-soft); }
nav button.active { color: var(--txt); background: var(--card); border-bottom-color: var(--accent); }
main { padding: 20px 24px 60px; max-width: 1200px; margin: 0 auto; }
.section { display: none; }
.section.active { display: block; animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px);} to {opacity:1; transform:none;} }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px,1fr)); gap: 14px; margin-bottom: 22px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px;
}
.stat .label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.stat .value { font-size: 24px; font-weight: 700; margin-top: 6px; }
.stat .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.stat.accent { border-color: var(--accent); }
.value.ok { color: var(--ok);} .value.warn { color: var(--warn);} .value.danger { color: var(--danger); }

.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; margin-bottom: 20px;
}
.panel h2 { margin: 0 0 4px; font-size: 16px; }
.panel .desc { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-wrap { overflow-x: auto; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; font-weight: 600; }
tbody tr:hover { background: var(--card-2); }
td.num, th.num { text-align: right; }
tfoot td { font-weight: 700; border-top: 2px solid var(--line); border-bottom: none; }
.empty { color: var(--muted); padding: 24px; text-align: center; font-style: italic; }
td.neg, .neg { color: var(--danger); font-weight: 700; }

button.btn {
  background: var(--accent); color: #04221f; border: none; padding: 9px 14px;
  border-radius: 9px; font-weight: 700; cursor: pointer; font-size: 13px;
}
button.btn:hover { filter: brightness(1.08); }
button.btn.ghost { background: transparent; color: var(--txt); border: 1px solid var(--line); }
button.btn.ghost:hover { background: var(--bg-soft); }
button.btn.sm { padding: 6px 10px; font-size: 12px; }
.icon-btn {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  width: 30px; height: 30px; border-radius: 8px; cursor: pointer; font-size: 14px;
}
.icon-btn:hover { color: var(--txt); border-color: var(--accent); }
.icon-btn.danger:hover { color: var(--danger); border-color: var(--danger); }
.row-actions { display: flex; gap: 6px; }

.chip { display:inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11px; background: var(--bg-soft); color: var(--muted); border: 1px solid var(--line); }
.chip.f1 { color: var(--ok); border-color: var(--ok); }
.chip.f2 { color: var(--accent-2); border-color: var(--accent-2); }

.filter-bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filter-bar select {
  background: var(--bg-soft); border: 1px solid var(--line); color: var(--txt);
  padding: 7px 10px; border-radius: 8px; font-size: 13px;
}

/* Cash-flow chart */
.cf-chart { display: flex; gap: 6px; align-items: stretch; height: 160px; margin: 8px 0 4px; }
.cf-col { flex: 1; display: flex; flex-direction: column; align-items: center; }
.cf-bar-area { position: relative; width: 100%; flex: 1; }
.cf-bar-area::before { content:''; position:absolute; left:0; right:0; top:50%; border-top: 1px dashed var(--line); }
.cf-bar { position: absolute; left: 20%; right: 20%; border-radius: 4px; }
.cf-bar.pos { bottom: 50%; background: var(--ok); }
.cf-bar.neg { top: 50%; background: var(--danger); }
.cf-month { font-size: 11px; color: var(--muted); margin-top: 6px; }

.seasonal-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(72px,1fr)); gap: 8px; margin: 6px 0 14px; }
.seasonal-inputs .si { display: flex; flex-direction: column; gap: 3px; }
.seasonal-inputs label { font-size: 11px; color: var(--muted); text-align: center; }
.seasonal-inputs input {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line); color: var(--txt);
  padding: 6px; border-radius: 7px; font-size: 13px; text-align: center;
}
.seasonal-inputs input:focus { outline: none; border-color: var(--accent); }

/* Modal */
.modal-bg {
  position: fixed; inset: 0; background: rgba(4,12,16,.7); display: none;
  align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal-bg.open { display: flex; }
.modal {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  width: 100%; max-width: 460px; padding: 22px; max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin: 0 0 16px; font-size: 17px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--line); color: var(--txt);
  padding: 10px 12px; border-radius: 9px; font-size: 14px; font-family: inherit;
}
.field textarea { min-height: 64px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 8px; }

.note { font-size: 12px; color: var(--muted); margin-top: 10px; line-height: 1.5; }
.premissas-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(200px,1fr)); gap: 14px; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--ok); color: #04221f; padding: 10px 18px; border-radius: 10px;
  font-weight: 700; font-size: 13px; opacity: 0; transition: opacity .3s; pointer-events: none; z-index: 60;
}
.toast.show { opacity: 1; }
@media (max-width: 600px) {
  main { padding: 16px 12px 60px; }
  header { padding: 14px; }
}