:root {
  color-scheme: light;
  --background: #f5f7fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #667085;
  --primary: #3157d5;
  --primary-dark: #233f9e;
  --border: #dfe4ec;
  --danger: #b42318;
  --shadow: 0 16px 40px rgb(23 32 51 / 8%);
}

* {
  box-sizing: border-box;
}

body {
  background: var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  margin: 0;
}

a {
  color: var(--primary);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.container {
  margin: 0 auto;
  max-width: 1080px;
  padding-inline: 24px;
}

.site-header {
  background: rgb(255 255 255 / 94%);
  border-bottom: 1px solid var(--border);
}

.nav,
.nav-links,
.actions,
.page-heading,
.note-meta,
.pagination {
  align-items: center;
  display: flex;
  gap: 16px;
}

.nav,
.page-heading {
  justify-content: space-between;
}

.nav {
  min-height: 70px;
}

.nav-links form {
  margin: 0;
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
}

.link-button {
  background: none;
  border: 0;
  color: var(--primary);
  cursor: pointer;
  font: inherit;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.main-content {
  min-height: calc(100vh - 150px);
  padding-block: 64px;
}

.hero {
  max-width: 760px;
  padding-block: 32px 56px;
}

.hero h1,
.page-heading h1,
.form-card h1 {
  font-size: clamp(2rem, 6vw, 4.5rem);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 8px 0 20px;
}

.page-heading h1,
.form-card h1 {
  font-size: clamp(2rem, 4vw, 3rem);
}

.eyebrow {
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lead {
  color: var(--muted);
  font-size: 1.2rem;
  max-width: 680px;
}

.feature-grid,
.note-list {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.note-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 32px;
}

.card,
.form-card,
.empty-state {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.form-card {
  margin: 0 auto;
  max-width: 680px;
}

.button {
  background: var(--primary);
  border: 1px solid var(--primary);
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  display: inline-block;
  font: inherit;
  font-weight: 700;
  padding: 10px 16px;
  text-decoration: none;
}

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

.button-secondary {
  background: transparent;
  color: var(--primary);
}

.button-danger {
  background: var(--danger);
  border-color: var(--danger);
}

.danger-link,
.error {
  color: var(--danger);
}

.badge,
.message {
  background: #e9eeff;
  border-radius: 999px;
  color: var(--primary-dark);
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
}

.note-meta {
  color: var(--muted);
  font-size: 0.85rem;
  justify-content: space-between;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
textarea {
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  padding: 10px 12px;
  width: 100%;
}

.errorlist {
  color: var(--danger);
}

.footer {
  color: var(--muted);
  padding-block: 24px;
}

@media (max-width: 760px) {
  .feature-grid,
  .note-list {
    grid-template-columns: 1fr;
  }

  .nav,
  .page-heading {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 16px;
  }

  .nav-links {
    flex-wrap: wrap;
  }
}