/* =====================================================
   static/css/style.css – Navy-Blue Theme komplett
   • Reset & Basis
   • Navbar & Mobile-Menu
   • Alerts
   • Buttons
   • Form Controls
   • Grids & Cards
   • Page Titles
   • Gruppen-Übersicht
   • Balance-Summary (zentriert)
   • Link zu allen Ständen
   • Teilnehmer-Dropdown & Chips
   • Payments-Liste mit Unterscheidung & Lösch-Warning
   • Balances-Übersicht
   • Responsive Tabellen
   • Footer
   ===================================================== */

/* ——————————————————————————————————————————————
   Farb- und Layout-Variablen
———————————————————————————————————————————————— */
:root {
  --color-primary:     #001F3F;  /* Navy Blue */
  --color-secondary:   #003366;  /* Dunkles Navy */
  --color-accent:      #004C99;  /* Royal Blue */
  --color-bg: #f0f9fd;  /* Sehr helles Blau */
  --color-card:        #FFFFFF;  /* Weiß */
  --color-text:        #001F3F;  /* Navy für Text */
  --color-text-muted:  #64748B;  /* Gedämpftes Grau-Blau */
  --color-paid-me:     #E3FFEA;  /* helle Grün-Tönung */
  --color-paid-other:  #FFE3E3;  /* helle Rot-Tönung */
  --radius-lg:         0.75rem;
  --radius-md:         0.5rem;
  --space:             1.5rem;
  --transition:        0.3s ease;
}

/* ——————————————————————————————————————————————
   Reset & Basis
———————————————————————————————————————————————— */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Inter', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-accent);
}
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1rem;
}

/* ——————————————————————————————————————————————
   Navbar & Mobile-Menu (komplett neu)
———————————————————————————————————————————————— */
header.navbar {
  background: var(--color-primary);
  padding: 0 var(--space);
  position: relative;
  z-index: 1000;
}

.nav-container {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: none;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: background var(--transition);
}
.hamburger:hover span {
  background: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-links a,
.nav-links .nav-text,
.nav-links .btn.cta {
  color: #fff;
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links .btn.cta:hover,
.nav-links .nav-text:hover {
  color: var(--color-accent);
}

/* Call-to-Action Button */
.btn.cta {
  background: var(--color-accent);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  transition: background var(--transition);
}
.btn.cta:hover {
  background: var(--color-secondary);
}

/* Admin-Dropdown */
.nav-links .dropdown {
  position: relative;
}
.nav-links .dropdown-toggle {
  background: none;
  border: none;
  color: #fff;
  font-weight: 500;
  cursor: pointer;
  padding: 0.5rem 1rem;
}
.nav-links .dropdown-toggle::after {
  content: "▾";
  margin-left: 0.25rem;
  font-size: 0.75rem;
}
.nav-links .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-card);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  flex-direction: column;
  min-width: 160px;
  z-index: 1001;
}
.nav-links .dropdown-menu a {
  padding: 0.5rem 1rem;
  color: var(--color-text);
  font-weight: 500;
  white-space: nowrap;
}
.nav-links .dropdown.open .dropdown-menu,
.nav-links .dropdown:hover .dropdown-menu {
  display: flex;
}

/* Mobile Styles */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }
  .nav-links {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .nav-links.open {
    max-height: 400px; /* ausreichend Platz für alle Links */
  }
  .nav-links a,
  .nav-links .nav-text,
  .nav-links .btn.cta,
  .nav-links .dropdown-toggle {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
  }
  /* Dropdown im Mobile-Modus */
  .nav-links .dropdown-menu {
    position: static;
    box-shadow: none;
    background: var(--color-primary);
  }
  .nav-links .dropdown-menu a {
    color: #fff;
  }
}



/* ——————————————————————————————————————————————
   Alerts
———————————————————————————————————————————————— */
.alerts {
  margin-bottom: var(--space);
}
.alert {
  background: #ffeeba;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  position: relative;
  margin-bottom: 0.5rem;
}
.alert .close-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
}

/* ——————————————————————————————————————————————
   Buttons
———————————————————————————————————————————————— */
.btn {
  display: inline-block;
  font-weight: 500;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
}
.btn-primary:hover {
  background: var(--color-accent);
}
.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
  padding: 0.5rem 1rem;
}
.btn-secondary:hover {
  background: var(--color-primary);
}
.btn-danger {
  background: #c82333;
  color: #fff;
  padding: 0.25rem 0.5rem;
  font-size: 0.85rem;
}
.btn-link {
  background: none;
  color: var(--color-primary);
  text-decoration: underline;
  padding: 0;
}
.btn-block {
  width: 100%;
  padding: 0.75rem;
}

/* ——————————————————————————————————————————————
   Form Controls
———————————————————————————————————————————————— */
.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(0,31,63,0.25);
  outline: none;
}
.form-group {
  margin-bottom: 1rem;
}

/* ——————————————————————————————————————————————
   Grids & Cards
———————————————————————————————————————————————— */
.grid-two {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space);
  margin-bottom: var(--space);
}
@media (max-width: 768px) {
  .grid-two {
    grid-template-columns: 1fr;
  }
}
.form-card,
.payments-card,
.auth-card,
.group-card,
.balance-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  padding: 2rem;
  margin-bottom: var(--space);
  transition: transform var(--transition), box-shadow var(--transition);
}
.form-card:hover,
.payments-card:hover,
.auth-card:hover,
.group-card:hover,
.balance-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

/* ——————————————————————————————————————————————
   Page Titles
———————————————————————————————————————————————— */
.page-title {
  margin-bottom: var(--space);
  font-size: 1.75rem;
  color: var(--color-primary);
}

/* ——————————————————————————————————————————————
   Gruppen-Übersicht
———————————————————————————————————————————————— */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space);
  margin-bottom: var(--space);
}
.group-card {
  display: block;
  color: var(--color-text);
  text-decoration: none;
}
.group-card h2 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}
.group-card .group-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* ——————————————————————————————————————————————
   Balance-Summary (zentriert)
———————————————————————————————————————————————— */
.balance-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space);
  margin-bottom: var(--space);
}
.bs-item {
  flex: 1 1 30%;
  min-width: 120px;
  background: var(--color-card);
  border-radius: var(--radius-md);
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.bs-item .icon {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--color-secondary);
}
.bs-item .value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.bs-item .label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* ——————————————————————————————————————————————
   Link zu allen Ständen
———————————————————————————————————————————————— */
.balances-link-wrapper {
  margin-bottom: var(--space);
}
.balances-btn {
  background: var(--color-secondary);
  color: #fff;
}
.balances-btn:hover {
  background: var(--color-primary);
}

/* ——————————————————————————————————————————————
   Teilnehmer-Dropdown & Chips
———————————————————————————————————————————————— */
.participant-group {
  position: relative;
}
.dropdown-wrapper {
  position: relative;
  display: inline-block;
  width: 100%;
}
#open-participants {
  width: 100%;
  text-align: left;
  margin-bottom: 0.5rem;
}
.participants-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  width: 300px;
  max-height: 260px;
  background: var(--color-card);
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  padding: 1rem;
  overflow-y: auto;
  z-index: 100;
  display: none;
}
.participants-dropdown input {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
}
.participants-dropdown ul {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
  max-height: 160px;
  overflow-y: auto;
}
.participant-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  margin-bottom: 0.25rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition);
}
.participant-item:not(.selected):hover {
  background: var(--color-bg);
}
.participant-item.selected {
  background: var(--color-paid-me);
}
.participant-item.paid-by-other.selected {
  background: var(--color-paid-other);
}
.participant-name {
  flex: 1;
}
.checkmark {
  display: none;
  color: #fff;
  font-weight: bold;
}
.participant-item.selected .checkmark {
  display: inline;
}

/* Chips */
.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  min-height: 2.5rem;
  margin-bottom: 0.5rem;
}
.chip {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 0.25rem 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}
.chip .remove-chip {
  cursor: pointer;
  font-weight: bold;
}
#select-all-btn {
  display: block;
  width: 100%;
  text-align: right;
  font-size: 0.875rem;
  text-decoration: underline;
  color: var(--color-secondary);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

/* ——————————————————————————————————————————————
   Payments-Liste mit Unterscheidung & Lösch-Warning
———————————————————————————————————————————————— */
.payments-card h3 {
  margin-bottom: 1rem;
}
.payments-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.payment-item {
  margin-bottom: 1rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.payment-item.paid-by-me {
  background: var(--color-paid-me);
}
.payment-item.paid-by-other {
  background: var(--color-paid-other);
}
.payment-item:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.payment-item summary {
  list-style: none;
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.payment-item summary::-webkit-details-marker {
  display: none;
}
.payment-item[open] summary {
  background: var(--color-bg);
}
.pi-details {
  padding: 1rem;
  background: var(--color-card);
  border-top: 1px solid #e2e8f0;
}
.pi-details p {
  margin-bottom: 0.5rem;
}
.pi-title {
  font-weight: 500;
}
.pi-amount {
  font-weight: 600;
  color: var(--color-primary);
}

/* ——————————————————————————————————————————————
   Balances-Übersicht
———————————————————————————————————————————————— */
.balance-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  padding: var(--space);
  text-align: center;
  margin-bottom: var(--space);
  transition: transform var(--transition), box-shadow var(--transition);
}
.balance-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.balance-card.active {
  border: 2px solid var(--color-primary);
}
.balance-details {
  list-style: none;
  margin-top: 1rem;
}
.balance-details li {
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
}

/* ——————————————————————————————————————————————
   Responsive Tabellen
———————————————————————————————————————————————— */
.table {
  border-collapse: separate;
  border-spacing: 0 0.5rem;
  margin-bottom: var(--space);
}
.table th,
.table td {
  vertical-align: middle;
  padding: 0.75rem 1rem;
  background: var(--color-card);
  border: none;
}
.table thead th {
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.table-success td {
  background-color: rgba(0,100,80,0.1) !important;
}
.table-danger td {
  background-color: rgba(200,30,45,0.1) !important;
}
@media (max-width: 576px) {
  .table thead {
    display: none;
  }
  .table,
  .table tbody,
  .table tr,
  .table td {
    display: block;
    width: 100%;
  }
  .table tr {
    cursor: pointer;
    margin-bottom: 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    overflow: hidden;
  }
  .table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .table td:before {
    content: attr(data-label) ": ";
    font-weight: 600;
    margin-right: 0.5rem;
    white-space: nowrap;
    color: var(--color-text-muted);
  }
  .table td:nth-child(2),
  .table td:nth-child(3) {
    display: flex;
  }
  .table tr.expanded td {
    display: flex;
  }
}

/* ——————————————————————————————————————————————
   Footer
———————————————————————————————————————————————— */
.footer {
  padding: 1rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}