:root {
  --bg: #f5f3ee;
  --panel: #ffffff;
  --ink: #1f2933;
  --muted: #687483;
  --line: #ded8cc;
  --accent: #426b5f;
  --accent-dark: #2d4b42;
  --danger: #9b2c2c;
  --good: #2f6f44;
  --warn: #8a5a00;
  --shadow: 0 10px 30px rgba(31, 41, 51, 0.08);
  --radius: 16px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding: 28px clamp(16px, 4vw, 48px) 18px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, #f9f7f1 0%, #edf0ea 100%);
}
h1 { margin: 0; font-size: clamp(28px, 4vw, 46px); letter-spacing: -0.04em; }
h2 { margin: 0 0 12px; font-size: 18px; }
.eyebrow { margin: 0 0 6px; color: var(--accent-dark); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 12px; }
.subline { margin: 8px 0 0; color: var(--muted); }
.header-actions { display: flex; flex-wrap: wrap; gap: 8px; }

button, .file-btn {
  border: 0;
  border-radius: 10px;
  padding: 9px 12px;
  background: var(--accent);
  color: white;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
}
button:hover, .file-btn:hover { background: var(--accent-dark); }
.secondary { background: #e7e2d7; color: var(--ink); }
.secondary:hover { background: #d9d1c3; }
.danger { background: #f4dddd; color: var(--danger); }
.danger:hover { background: #edcaca; }
.small { padding: 6px 9px; min-height: 30px; font-size: 12px; }

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 430px) 1fr;
  gap: 18px;
  padding: 18px clamp(16px, 4vw, 48px) 32px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.controls {
  padding: 16px;
  align-self: start;
  position: sticky;
  top: 12px;
  max-height: calc(100vh - 24px);
  overflow: auto;
}
.controls section {
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
  margin-bottom: 16px;
}
.controls section:last-child { border-bottom: 0; margin-bottom: 0; }
.content { display: grid; gap: 18px; }
.content .panel { padding: 18px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}
.form-grid h2 { grid-column: 1 / -1; }
label { display: grid; gap: 5px; font-size: 13px; color: var(--muted); }
input, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 10px;
  font: inherit;
  color: var(--ink);
  background: #fffdf8;
}
input:focus, select:focus { outline: 2px solid rgba(66, 107, 95, .2); border-color: var(--accent); }
.checkbox-label { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; }
.checkbox-label input { width: auto; }
.scenario-row { display: flex; gap: 8px; margin-bottom: 8px; }
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.hint { color: var(--muted); margin: 0; font-size: 13px; }

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 13px; }
.card .value { font-size: clamp(22px, 2vw, 30px); font-weight: 800; letter-spacing: -0.03em; margin-top: 6px; }
.card .note { color: var(--muted); font-size: 12px; margin-top: 6px; }
.good { color: var(--good); }
.warn { color: var(--warn); }
.bad { color: var(--danger); }

.table-wrap { width: 100%; overflow: auto; border: 1px solid var(--line); border-radius: 12px; }
.table-wrap.tall { max-height: 460px; }
.table-wrap.compact { margin-bottom: 12px; }
table { width: 100%; border-collapse: collapse; min-width: 640px; }
.controls table { min-width: 360px; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { position: sticky; top: 0; background: #f7f4ed; z-index: 1; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
tbody tr:last-child td { border-bottom: 0; }
.total-row td { font-weight: 800; background: #fbf8f0; }
.negative { color: var(--danger); }
.positive { color: var(--good); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
canvas { width: 100%; border: 1px solid var(--line); border-radius: 12px; background: #fffdf8; }
footer { padding: 0 clamp(16px, 4vw, 48px) 28px; color: var(--muted); font-size: 13px; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  .controls { position: static; max-height: none; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two-col { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .app-header { align-items: stretch; flex-direction: column; }
  .form-grid, .cards { grid-template-columns: 1fr; }
  .scenario-row { flex-wrap: wrap; }
}