:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --panel: #ffffff;
  --ink: #1f2927;
  --muted: #67716e;
  --line: #dce3df;
  --green: #24725f;
  --green-soft: #e1f1eb;
  --blue: #315f7f;
  --blue-soft: #e7f0f6;
  --shadow: 0 12px 30px rgba(31, 41, 39, 0.08);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  background: #fbfcfb;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--green);
  color: #ffffff;
  font-weight: 800;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.2;
}

.tabs {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(118px, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #edf2ef;
}

.tab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
}

.tab-button.is-active {
  color: var(--ink);
  background: var(--panel);
  box-shadow: 0 1px 4px rgba(31, 41, 39, 0.12);
}

.tab-button svg,
.icon-button svg {
  width: 17px;
  height: 17px;
}

.shell-body {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 38px 24px;
}

.panel-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(320px, 1.1fr);
  gap: 18px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 68px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.panel-header h2 {
  font-size: 15px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 18px;
}

.form-grid.compact {
  grid-template-columns: 1fr;
}

.field {
  display: grid;
  gap: 7px;
  min-width: 0;
}

label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #ffffff;
  color: var(--ink);
  padding: 0 12px;
  outline: 0;
}

input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}

.output-grid {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.output-grid.simple {
  grid-template-columns: 1fr;
}

.metric {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.metric span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.metric strong {
  text-align: right;
  font-size: 24px;
  line-height: 1.1;
}

.metric.primary {
  min-height: 92px;
  background: var(--green-soft);
  border-color: #b6d9cb;
}

.metric.primary strong {
  color: var(--green);
  font-size: 34px;
}

.metric.secondary {
  background: var(--blue-soft);
  border-color: #c7dbe8;
}

.metric.secondary strong {
  color: var(--blue);
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #e8eeeb;
  color: var(--ink);
}

.icon-button:hover {
  background: var(--green-soft);
}

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px;
  }

  .tabs {
    width: 100%;
  }

  .shell-body {
    padding: 18px 14px;
  }

  .panel-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .metric {
    align-items: flex-start;
    flex-direction: column;
  }

  .metric strong {
    text-align: left;
  }

  .metric.primary strong {
    font-size: 30px;
  }
}