:root {
  color-scheme: light;
  --bg: #eef4f8;
  --surface: #ffffff;
  --surface-muted: #f3f8fc;
  --text: #09213a;
  --text-muted: #3f5a73;
  --primary: #0054a6;
  --primary-hover: #004385;
  --primary-soft: #e8f2ff;
  --accent: #13a456;
  --accent-soft: #e7f8ee;
  --border: #c9dced;
  --shadow: 0 16px 36px rgba(5, 45, 88, 0.14);
  --success-bg: #ecfdf3;
  --success-text: #046f42;
  --danger-bg: #fef2f2;
  --danger-text: #b91c1c;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: radial-gradient(circle at top, #dcefff 0%, #eaf4fb 35%, var(--bg) 100%);
  color: var(--text);
  font-family:
    "Inter",
    "Segoe UI",
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

.app-shell {
  margin: 0 auto;
  max-width: 1120px;
  padding: 2.25rem 1rem 3rem;
}

.topbar {
  background: linear-gradient(135deg, #fbfdff 0%, #eff6fc 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.1rem;
  padding: 1rem 1.1rem;
}

.topbar-main {
  display: grid;
  gap: 0.45rem;
}

.topbar-subtitle {
  color: var(--text-muted);
  font-size: 0.86rem;
  font-weight: 500;
  margin: 0;
}

.topbar-actions {
  align-items: center;
  display: flex;
  gap: 0.6rem;
}

.user-chip {
  background: #f0f7ff;
  border: 1px solid #c6dbf2;
  border-radius: 999px;
  color: #11365a;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.2rem 0.65rem;
}

.main-nav {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 22px rgba(4, 41, 80, 0.08);
  display: grid;
  gap: 0.95rem;
  margin-bottom: 1.1rem;
  padding: 0.9rem;
}

.mobile-menu-toggle {
  block-size: 1px;
  inline-size: 1px;
  opacity: 0;
  pointer-events: none;
  position: absolute;
}

.mobile-menu-button {
  display: none;
}

.nav-group {
  display: grid;
  gap: 0.5rem;
}

.nav-group-title {
  color: #0d4d88;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.nav-link {
  background: var(--primary-soft);
  border: 1px solid #bfd8f2;
  border-radius: 999px;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 0.36rem 0.8rem;
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: #dcecff;
  border-color: #a8cbef;
  color: #003c77;
  text-decoration: none;
  transform: translateY(-1px);
}

.nav-link.is-active {
  background: linear-gradient(120deg, var(--primary) 0%, #1463ba 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 16px rgba(0, 84, 166, 0.28);
}

.brand {
  align-items: center;
  color: #0b1320;
  display: inline-flex;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 0;
  letter-spacing: 0.01em;
}

.brand-logo {
  display: block;
  height: auto;
  max-height: 52px;
  width: min(280px, 100%);
}

.content-card {
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-muted) 100%);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 1.6rem;
}

h1,
h2,
h3 {
  color: #0b1320;
  line-height: 1.2;
  margin-top: 0;
}

h1 {
  font-size: 1.75rem;
  margin-bottom: 0.85rem;
}

h2 {
  border-top: 1px solid var(--border);
  font-size: 1.15rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
}

p {
  color: var(--text-muted);
  margin: 0.5rem 0 1rem;
}

ul {
  display: grid;
  gap: 0.65rem;
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}

li {
  background: #f5faff;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: #153759;
  padding: 0.7rem 0.85rem;
}

.metrics-grid,
.link-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  margin-bottom: 1rem;
}

.metric-card,
.screen-link {
  background: #f5faff;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: block;
  padding: 0.8rem;
}

.metric-label {
  color: #334155;
  font-size: 0.85rem;
  margin: 0;
}

.metric-value {
  color: #0f172a;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0.2rem 0 0;
}

.data-table {
  border-collapse: collapse;
  margin-top: 0.6rem;
  width: 100%;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid #d7e2ef;
  padding: 0.5rem 0.4rem;
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: #334155;
  font-size: 0.82rem;
  text-transform: uppercase;
}

a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--primary-hover);
  text-decoration: underline;
}

.flash {
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 1rem;
  padding: 0.7rem 0.9rem;
}

.flash-notice {
  background: var(--success-bg);
  border: 1px solid #a7f3d0;
  color: var(--success-text);
}

.flash-alert {
  background: var(--danger-bg);
  border: 1px solid #fecaca;
  color: var(--danger-text);
}

form {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
  max-width: 420px;
}

.guest-session .app-shell {
  max-width: 560px;
}

.guest-session .topbar {
  justify-content: center;
}

.guest-session .topbar-actions {
  display: none;
}

.guest-session .content-card {
  margin: 0 auto;
}

.sign-in-shell {
  margin: 0 auto;
  max-width: 420px;
}

.sign-in-brand {
  margin-bottom: 1rem;
}

.sign-in-logo {
  display: block;
  height: auto;
  margin-bottom: 0.8rem;
  max-width: 100%;
  width: min(360px, 100%);
}

.sign-in-shell h1 {
  font-size: 1.45rem;
  margin-bottom: 0.35rem;
}

label {
  color: #1e293b;
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  min-height: 42px;
  outline: none;
  padding: 0.55rem 0.75rem;
  width: 100%;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.16);
}

button,
input[type="submit"] {
  background: var(--primary);
  border: 1px solid transparent;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  min-height: 42px;
  padding: 0.55rem 0.95rem;
  transition: background-color 0.18s ease;
}

button:hover,
input[type="submit"]:hover {
  background: var(--primary-hover);
}

.inline-form {
  display: inline-flex;
  gap: 0;
  margin: 0;
  max-width: none;
}

.btn-secondary {
  background: var(--accent-soft);
  border-color: #b9e8c8;
  color: #0f6a3d;
}

.btn-secondary:hover {
  background: #d7f3e2;
}

.action-hint {
  background: var(--primary-soft);
  border: 1px solid #c9ddf3;
  border-radius: 999px;
  color: #3f5a73;
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.2;
  margin-left: 0.45rem;
  max-width: 24rem;
  padding: 0.2rem 0.55rem;
}

@media (max-width: 640px) {
  .app-shell {
    padding: 1.25rem 0.75rem 2rem;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.85rem;
  }

  .topbar-actions {
    width: 100%;
  }

  .user-chip {
    width: fit-content;
  }

  .brand {
    width: 100%;
  }

  .brand-logo {
    height: auto;
    max-height: 44px;
    max-width: min(240px, 100%);
    width: auto;
  }

  .content-card {
    border-radius: 12px;
    padding: 1rem;
  }

  .main-nav {
    gap: 0.8rem;
    padding: 0.8rem;
  }

  .mobile-menu-button {
    align-items: center;
    background: linear-gradient(120deg, #f5faff 0%, #e7f2ff 100%);
    border: 1px solid #b8d2ec;
    border-radius: 12px;
    color: #0e4f8c;
    cursor: pointer;
    display: inline-flex;
    font-size: 0.9rem;
    font-weight: 700;
    justify-content: space-between;
    margin: 0 0 0.75rem;
    min-height: 42px;
    padding: 0.55rem 0.8rem;
    width: 100%;
  }

  .mobile-menu-button::after {
    color: #0e4f8c;
    content: "+";
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1;
  }

  .main-nav {
    display: none;
  }

  .mobile-menu-toggle:checked + .mobile-menu-button::after {
    content: "−";
  }

  .mobile-menu-toggle:checked + .mobile-menu-button + .main-nav {
    display: grid;
  }

  .guest-session .topbar {
    margin-bottom: 0.75rem;
  }

  .sign-in-logo {
    width: min(300px, 100%);
  }
}