:root {
  --bg: #f5f7f9;
  --card: #ffffff;
  --text: #17202a;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #315f8c;
  --accent-dark: #234768;
  --accent-soft: #eef4fa;
  --good: #1f8a5b;
  --bad: #b54747;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button, input { font: inherit; }

button {
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 0 16px;
  cursor: pointer;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(49, 95, 140, .2);
  outline-offset: 2px;
}

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

.secondary {
  background: white;
  border-color: var(--border);
  color: var(--text);
}
.secondary:hover { background: #fafafa; }

.text-btn {
  border: 0;
  background: transparent;
  color: var(--accent);
  padding: 0;
  min-height: 36px;
  font-weight: 700;
}
.text-btn:hover { text-decoration: underline; }

.app-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 40px auto;
}

.hidden { display: none !important; }

.auth-card {
  width: min(440px, 100%);
  margin: 70px auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 28px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: white;
  font-weight: 800;
  letter-spacing: .02em;
}

.brand h1, .brand p { margin: 0; }
.brand h1 { font-size: 29px; }
.brand p { color: var(--muted); margin-top: 4px; }

.auth-panel { min-width: 0; }

.panel-heading {
  margin-bottom: 4px;
}
.panel-heading h2 {
  margin: 0;
  font-size: 22px;
}
.panel-heading p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.stack { display: grid; gap: 16px; }

label {
  display: grid;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
}

input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: white;
  color: var(--text);
}

input:focus {
  border-color: var(--accent);
}

.message {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.message.error { color: var(--bad); }
.message.success { color: var(--good); }

.divider {
  position: relative;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin: 1px 0;
}
.divider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: var(--border);
}
.divider span {
  position: relative;
  background: white;
  padding: 0 10px;
}

.auth-switch-text {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.topbar h2 { margin: 4px 0; font-size: clamp(26px, 4vw, 42px); }
.eyebrow { margin: 0; font-size: 12px; letter-spacing: .14em; font-weight: 800; color: var(--accent); }
.muted { color: var(--muted); margin: 4px 0 0; }
.topbar-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.grid {
  display: grid;
  gap: 16px;
}

.hero-grid {
  grid-template-columns: 2fr repeat(3, 1fr);
  margin-bottom: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.hero-card { min-height: 188px; }
.label { color: var(--muted); font-size: 13px; font-weight: 700; }
.hero-value { display: block; font-size: 44px; margin: 10px 0 24px; }
.metric-value { display: block; font-size: 30px; margin-top: 10px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.split strong { display: block; margin-top: 6px; }

.chart-card { margin-bottom: 16px; }
.section-head { display: flex; justify-content: space-between; margin-bottom: 14px; }
.section-head h3 { margin: 4px 0 0; }

.measurements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.measurement {
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.measurement strong {
  display: block;
  font-size: 20px;
  margin-top: 4px;
}

.good { color: var(--good); }
.bad { color: var(--bad); }

dialog {
  width: min(760px, calc(100% - 28px));
  border: 0;
  border-radius: 18px;
  padding: 0;
  box-shadow: 0 24px 80px rgba(0,0,0,.2);
}

dialog::backdrop { background: rgba(0,0,0,.45); }

.dialog-form { padding: 24px; }
.dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.dialog-head h3 { margin: 4px 0 0; font-size: 26px; }

.icon-btn {
  width: 44px;
  padding: 0;
  background: transparent;
  border-color: var(--border);
  font-size: 24px;
}

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

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 22px;
}

@media (max-width: 840px) {
  .hero-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-card { grid-column: 1 / -1; }
  .measurements-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .app-shell { width: min(100% - 20px, 1120px); margin: 18px auto; }
  .auth-card { margin: 22px auto; padding: 22px; }
  .brand h1 { font-size: 25px; }
  .topbar { flex-direction: column; }
  .topbar-actions { width: 100%; }
  .topbar-actions button { flex: 1; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { grid-column: auto; }
  .measurements-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
}