:root {
  --color-background: #f5f6fa;
  --color-surface: #ffffff;
  --color-text: #1f2933;
  --color-muted: #6b7280;
  --color-primary: #2a9d8f;
  --color-primary-dark: #23867b;
  --color-border: #e1e7f0;
  --shadow-soft: 0 16px 40px rgb(15 23 42 / 10%);
  --radius-lg: 18px;
  --radius-md: 12px;
  --gap: 24px;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--color-primary-dark);
}

main.container {
  padding-block: 2rem 3rem;
}

.section-gap {
  gap: var(--gap);
}

/* Navigation */
.appbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgb(15 23 42 / 6%);
  padding-block: 0.35rem;
}

.appbar .navbar-brand {
  font-weight: 700;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.appbar .navbar-brand span {
  color: var(--color-primary);
}

.appbar .navbar-brand:hover,
.appbar .navbar-brand:focus {
  color: var(--color-primary);
}

.appbar .navbar-nav .nav-link {
  color: var(--color-muted);
  font-weight: 600;
  padding: 0.75rem 1rem;
  transition: color 0.2s ease, background-color 0.2s ease;
  border-radius: var(--radius-md);
}

.appbar .navbar-nav .nav-link:hover,
.appbar .navbar-nav .nav-link:focus {
  color: var(--color-primary);
  background: rgba(42, 157, 143, 0.08);
}

.appbar .navbar-nav .nav-link.active {
  color: var(--color-primary);
  background: rgba(42, 157, 143, 0.1);
}

.appbar .navbar-toggler {
  border: none;
  padding: 0.35rem 0.5rem;
}

.appbar .navbar-toggler:focus {
  box-shadow: none;
}

/* Cards */
.card {
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.75rem;
}

.card h5 {
  font-weight: 700;
  color: var(--color-text);
}

.card + .card {
  margin-top: var(--gap);
}

/* KPI blocks */
.kpi {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  height: 100%;
}

.kpi-label {
  color: var(--color-muted);
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.kpi-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
}

/* Lists */
.list-group {
  --bs-list-group-bg: transparent;
  --bs-list-group-border-color: transparent;
  --bs-list-group-border-width: 0;
}

.list-group-item {
  background: transparent;
  border: none;
  padding: 0.75rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.list-group-item + .list-group-item {
  border-top: 1px solid var(--color-border);
  margin-top: 0.5rem;
  padding-top: 1.25rem;
}

.list-item-actions a {
  color: var(--color-muted);
  font-size: 1.1rem;
  transition: color 0.2s ease;
}

.list-item-actions a:hover {
  color: var(--color-primary);
}

/* Tables */
.table {
  --bs-table-color: var(--color-text);
  --bs-table-bg: transparent;
  --bs-table-border-color: transparent;
  margin-bottom: 0;
}

.table thead th {
  color: var(--color-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.75rem;
}

.table tbody tr {
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.table tbody tr:hover {
  background-color: rgba(42, 157, 143, 0.06);
}

.table tbody td {
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table td.text-end,
.table th.text-end {
  text-align: right;
}

/* Buttons */
.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding-inline: 1.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  box-shadow: 0 12px 24px rgb(42 157 143 / 28%);
  transform: translateY(-1px);
}

.btn-outline-primary {
  color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
  border-radius: var(--radius-md);
  padding-inline: 1.1rem;
  transition: color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  color: #ffffff;
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 10px 20px rgb(42 157 143 / 25%);
}

.btn-link {
  color: var(--color-primary);
}

.btn-link:hover,
.btn-link:focus {
  color: var(--color-primary-dark);
}

/* Floating action button */
.fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 2rem;
  display: grid;
  place-items: center;
  box-shadow: 0 18px 36px rgb(42 157 143 / 35%);
  transition: background 0.2s ease, transform 0.2s ease;
}

.fab:hover,
.fab:focus {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* Utility text colors */
.text-muted,
.text-secondary {
  color: var(--color-muted) !important;
}

/* Responsive adjustments */
@media (min-width: 768px) {
  main.container {
    padding-block: 3rem 4rem;
  }

  .kpi {
    padding: 1.75rem;
  }

  .card {
    padding: 2rem;
  }
}

@media (max-width: 767.98px) {
  .appbar .navbar-nav .nav-link {
    padding: 0.5rem 0.75rem;
  }

  .navbar-collapse {
    padding-block: 0.75rem;
  }

  main.container {
    padding-inline: 1rem;
  }

  .list-group-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .list-item-actions {
    width: 100%;
    justify-content: flex-end;
  }

  .kpi,
  .card {
    padding: 1.4rem;
  }
}

/* ── Auth pages (přihlášení, registrace) ─────────────────────────── */
.auth-wrap {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-block: 2rem 4rem;
}

.auth-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.auth-logo-icon {
  font-size: 1.5rem;
}

.auth-logo-name {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
}

.auth-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.auth-subtitle {
  color: var(--color-muted);
  margin-bottom: 1.75rem;
  font-size: 0.95rem;
}

.auth-field {
  margin-bottom: 1.1rem;
}

.auth-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

.auth-field input {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-background);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.auth-field input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.15);
}

.auth-error {
  color: #dc3545;
  font-size: 0.85rem;
  margin-top: 0.3rem;
}

.auth-help {
  color: var(--color-muted);
  font-size: 0.8rem;
  margin-top: 0.3rem;
}

.auth-remember {
  margin-bottom: 1.25rem;
}

.auth-check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  cursor: pointer;
}

.auth-check-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.auth-btn {
  width: 100%;
  padding: 0.75rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.auth-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(42, 157, 143, 0.3);
}

.auth-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* ── Landing page ────────────────────────────────────────────────── */
.landing-hero {
  text-align: center;
  padding-block: 4rem 3rem;
}

.landing-hero-inner {
  max-width: 640px;
  margin-inline: auto;
}

.landing-badge {
  display: inline-block;
  background: rgba(42, 157, 143, 0.12);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.landing-headline {
  font-size: clamp(1.8rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.landing-subline {
  font-size: 1.1rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.landing-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.landing-features {
  padding-block: 2rem 3rem;
}

.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1.75rem;
  height: 100%;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 48px rgb(15 23 42 / 14%);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.feature-text {
  font-size: 0.92rem;
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0;
}

.landing-cta-bottom {
  text-align: center;
  padding-block: 3rem 4rem;
}

.landing-cta-bottom h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.landing-cta-bottom p {
  color: var(--color-muted);
  margin-bottom: 1.5rem;
}