:root {
  --bg: #f4f7fb;
  --bg-soft: #e9eef6;
  --panel: #ffffff;
  --panel-soft: #f8fafc;
  --text: #172033;
  --heading: #0f172a;
  --muted: #64748b;
  --line: #d9e2ef;
  --line-strong: #c5d1e2;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-soft: #e8f0ff;
  --success: #15803d;
  --warning: #a16207;
  --danger: #b45309;
  --shadow: 0 10px 26px rgba(15, 23, 42, 0.07);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 42%, #eef3fa 100%);
}

button,
input,
select {
  font: inherit;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 20;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: var(--accent);
}

.skip-link:focus {
  top: 16px;
}

.top-bar,
.app-header,
.dashboard-shell,
.app-footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.top-bar {
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--heading);
  font-weight: 850;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.top-bar nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.top-bar nav a {
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.top-bar nav a:hover {
  color: var(--accent);
}

.app-header {
  padding: 38px 0 26px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 28px;
  align-items: end;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 14px;
  color: var(--heading);
  font-size: clamp(2.15rem, 4.7vw, 4.15rem);
  line-height: 1.03;
  letter-spacing: -0.062em;
}

h2 {
  margin-bottom: 0;
  color: var(--heading);
  font-size: 1.08rem;
  letter-spacing: -0.02em;
}

.lede {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.action-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
}

.action-label {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.header-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.source-status {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.source-status strong {
  color: var(--heading);
}

#csvUpload {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.button {
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text);
  background: var(--panel);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.14s ease, border-color 0.14s ease, background 0.14s ease, box-shadow 0.14s ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.button.primary {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}

.button.primary:hover {
  background: var(--accent-dark);
}

.button.secondary,
.button.ghost {
  color: var(--text);
}

.notice-card,
.controls-panel,
.panel,
.kpi-card,
.use-case-grid article {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.notice-card {
  padding: 14px 16px;
  border-radius: var(--radius);
  color: var(--muted);
  margin-bottom: 16px;
}

.notice-card strong {
  color: var(--warning);
  margin-right: 8px;
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.use-case-grid article {
  border-radius: var(--radius);
  padding: 18px;
}

.use-case-grid span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  border-radius: 8px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 0.78rem;
  font-weight: 850;
}

.use-case-grid h2 {
  margin-bottom: 8px;
}

.use-case-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.controls-panel {
  border-radius: var(--radius);
  padding: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr)) auto;
  gap: 14px;
  align-items: end;
  margin-bottom: 16px;
}

.control-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
}

.control-group input,
.control-group select {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 10px 11px;
  color: var(--text);
  background: #fff;
}

.control-group input:focus,
.control-group select:focus {
  outline: 3px solid rgba(37, 99, 235, 0.12);
  border-color: var(--accent);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  margin-bottom: 16px;
}

.kpi-card {
  border-radius: 14px;
  padding: 18px;
}

.kpi-card span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.kpi-card strong {
  display: block;
  margin-top: 8px;
  color: var(--heading);
  font-size: 1.72rem;
  letter-spacing: -0.045em;
}

.kpi-card p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.panel {
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

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

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  background: var(--panel-soft);
  font-size: 0.82rem;
  white-space: nowrap;
}

.insight-list,
.quality-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.insight-list li,
.quality-list li {
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--muted);
  background: var(--panel-soft);
  line-height: 1.5;
}

.quality-list li.warning {
  border-left-color: var(--warning);
}

.quality-list li.danger {
  border-left-color: var(--danger);
}

.project-note {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 18px;
  align-items: start;
}

.project-note p {
  margin-bottom: 12px;
  color: var(--muted);
  line-height: 1.65;
}

.project-note ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.7;
}

.table-panel {
  margin: 16px 0 32px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 820px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 10px;
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  background: var(--panel-soft);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

td {
  color: #293548;
}

tr:hover td {
  background: #f8fbff;
}

.app-footer {
  padding: 0 0 36px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

.app-footer p {
  margin-bottom: 0;
}

.app-footer div {
  display: flex;
  gap: 14px;
}

.app-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

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

@media (max-width: 950px) {
  .app-header {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }

  .controls-panel,
  .kpi-grid,
  .content-grid,
  .use-case-grid,
  .project-note {
    grid-template-columns: 1fr;
  }

  .panel.wide {
    grid-column: auto;
  }

  .app-footer {
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .top-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .app-header {
    padding-top: 30px;
  }

  h1 {
    font-size: 2.35rem;
  }

  .header-actions,
  .button {
    width: 100%;
  }

  .button {
    text-align: center;
  }
}

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .top-bar,
  .app-header,
  .dashboard-shell,
  .app-footer {
    width: 100%;
  }

  .top-bar,
  .app-header,
  .controls-panel,
  .use-case-grid,
  .project-note,
  .table-panel,
  .app-footer {
    display: none;
  }

  .notice-card,
  .panel,
  .kpi-card {
    box-shadow: none;
    border-color: #ccc;
  }

  .dashboard-shell {
    padding: 0;
  }

  .kpi-grid,
  .content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}