:root {
  --bg: #0f1113;
  --bg-elev: #181c20;
  --bg-card: #20262b;
  --line: #303940;
  --line-bright: #3f4b54;
  --text: #f4f1ea;
  --text-dim: #a9b0b3;
  --text-muted: #6f777b;
  --accent: #42d6c5;
  --accent-2: #6aa8ff;
  --danger: #ff6b5f;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(at 0% 0%, rgba(66, 214, 197, 0.06), transparent 38%),
    radial-gradient(at 100% 0%, rgba(106, 168, 255, 0.05), transparent 35%),
    var(--bg);
  color: var(--text);
  font-family: "Inter Tight", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
  max-width: 100%;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 72px;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 2px solid var(--line);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0;
  font-family: "Archivo Black", Impact, sans-serif;
  font-size: clamp(40px, 8vw, 84px);
  line-height: 0.92;
  letter-spacing: 0;
  text-transform: uppercase;
  max-width: 760px;
}

h2 {
  font-size: 24px;
  margin-bottom: 22px;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.main-nav a,
button,
.link-button {
  min-height: 42px;
  border: 1px solid var(--line-bright);
  border-radius: 8px;
  background: var(--accent);
  color: #0f1113;
  cursor: pointer;
  font-weight: 700;
  text-decoration: none;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  background: var(--bg-card);
  color: var(--text);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  border-color: var(--accent);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(28, 31, 25, 0.9);
  padding: 18px;
}

.metric span,
label,
dt,
time {
  color: var(--text-dim);
  font-size: 13px;
}

.metric strong {
  display: block;
  margin-top: 6px;
  font-size: 30px;
  line-height: 1.1;
}

.entry-layout {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  min-width: 0;
}

.entry-form,
.entry-card,
.chart-card,
.login-card,
.setup,
.empty {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(22, 24, 19, 0.95);
}

.entry-form {
  position: sticky;
  top: 20px;
  padding: 22px;
  min-width: 0;
}

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

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line-bright);
  border-radius: 8px;
  background: #10120d;
  color: var(--text);
  padding: 12px;
  outline: none;
}

textarea {
  resize: vertical;
}

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

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  min-width: 0;
}

.type-tab {
  flex: 1 1 120px;
  background: var(--bg-card);
  color: var(--text);
  overflow-wrap: anywhere;
}

.type-tab.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #0f1113;
}

.entry-panel {
  display: none;
}

.entry-panel.active {
  display: block;
}

.blood-pressure-grid {
  display: grid;
  gap: 12px;
}

.blood-pressure-grid fieldset {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.blood-pressure-grid label {
  margin-bottom: 0;
  font-size: 12px;
}

.blood-pressure-grid legend {
  color: var(--accent);
  font-weight: 700;
  padding: 0 6px;
}

.entry-form button,
.filters button,
.login-card button {
  width: 100%;
  padding: 0 18px;
}

.filters {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 120px;
  gap: 10px;
  margin-bottom: 14px;
}

.entry-card {
  padding: 20px;
  margin-bottom: 14px;
  min-width: 0;
}

.entry-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.entry-card-head > div {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: 999px;
  background: rgba(66, 214, 197, 0.12);
  color: var(--accent);
  padding: 0 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.entry-card p {
  color: var(--text-dim);
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}

.entry-meta div {
  min-width: 96px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
}

.entry-meta dd {
  margin: 2px 0 0;
  font-weight: 700;
}

.link-button {
  min-height: 34px;
  padding: 0 10px;
  background: transparent;
  color: var(--danger);
}

.empty,
.setup {
  padding: 24px;
  color: var(--text-dim);
}

.analysis-actions {
  display: flex;
  justify-content: flex-end;
  margin: 28px 0 16px;
}

.action-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line-bright);
  border-radius: 8px;
  background: var(--accent);
  color: #0f1113;
  padding: 0 16px;
  font-weight: 800;
  text-decoration: none;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.chart-card {
  padding: 18px;
}

.chart-card h2 {
  margin-bottom: 14px;
}

.chart-card canvas {
  display: block;
  width: 100%;
  height: 320px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #10120d;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  padding: 28px;
}

.login-card h1 {
  margin-bottom: 24px;
  font-size: 48px;
}

.error {
  border: 1px solid rgba(255, 107, 74, 0.45);
  border-radius: 8px;
  background: rgba(255, 107, 74, 0.12);
  color: #ffb199;
  padding: 10px 12px;
}

code {
  color: var(--accent);
}

@media (max-width: 900px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-content: stretch;
    width: 100%;
  }

  .main-nav a {
    min-height: 46px;
    padding: 0 10px;
    text-align: center;
  }

  .metric-grid,
  .entry-layout,
  .chart-grid {
    grid-template-columns: 1fr;
  }

  .entry-form {
    position: static;
  }
}

@media (max-width: 560px) {
  .shell {
    width: min(100% - 20px, 1180px);
    padding-top: 16px;
    padding-bottom: 44px;
  }

  h1 {
    font-size: clamp(38px, 13vw, 58px);
  }

  h2 {
    font-size: 22px;
    margin-bottom: 16px;
  }

  .topbar {
    gap: 18px;
    padding-bottom: 20px;
  }

  .main-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .main-nav a {
    min-height: 48px;
    font-size: 14px;
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin: 18px 0;
  }

  .metric {
    padding: 14px;
  }

  .metric strong {
    font-size: 24px;
  }

  .entry-layout {
    gap: 16px;
  }

  .entry-form,
  .entry-card,
  .chart-card {
    padding: 16px;
  }

  .type-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow-x: visible;
    margin-left: 0;
    margin-right: 0;
    padding: 0;
  }

  .type-tab {
    min-width: 0;
    min-height: 46px;
    padding: 0 8px;
    white-space: normal;
  }

  .filters,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .blood-pressure-grid fieldset {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 14px;
  }

  .blood-pressure-grid input {
    min-height: 46px;
  }

  .entry-card-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .entry-meta div {
    flex: 1 1 calc(50% - 10px);
    min-width: 0;
  }

  .analysis-actions {
    justify-content: stretch;
    margin: 18px 0 14px;
  }

  .action-button {
    justify-content: center;
    width: 100%;
    min-height: 48px;
  }

  .chart-grid {
    gap: 14px;
  }

  .chart-card canvas {
    height: 360px;
  }
}

.archive-block {
  margin-top: 24px;
}

.archive-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text-dim);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
  list-style: none;
  margin-bottom: 0;
}

.archive-toggle::-webkit-details-marker { display: none; }

.archive-toggle::before {
  content: '▶';
  font-size: .7rem;
  transition: transform .15s;
}

.archive-block[open] .archive-toggle::before {
  transform: rotate(90deg);
}

.archive-block[open] .archive-toggle {
  border-radius: 10px 10px 0 0;
  border-bottom-color: transparent;
  margin-bottom: 0;
}

.archive-block[open] > .entry-card:last-child {
  margin-bottom: 0;
}