:root {
  --green-900: #123d2b;
  --green-800: #1f6541;
  --green-700: #28764d;
  --green-100: #e7f2eb;
  --surface: #ffffff;
  --surface-soft: #f6f8f5;
  --line: #dce5dd;
  --text: #1d2a22;
  --muted: #65736b;
  --danger: #a12727;
  --danger-soft: #fbe9e9;
  --shadow: 0 18px 45px rgba(18, 61, 43, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--surface-soft);
  color: var(--text);
  font-family: Inter, "Segoe UI", Tahoma, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

a {
  color: var(--green-800);
  text-decoration: none;
}

a:hover {
  color: var(--green-900);
}

.main-header,
body > header {
  background: var(--green-900);
  color: #fff;
  box-shadow: 0 10px 30px rgba(18, 61, 43, 0.22);
}

.main-header .container,
.admin-header-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.logo span,
.admin-title {
  font-size: 1.25rem;
  font-weight: 800;
}

nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.container,
main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

h1,
h2,
h3 {
  color: var(--green-900);
  line-height: 1.2;
  margin: 0 0 16px;
}

h1 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

h2 {
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
}

.page-actions,
.top-actions,
.event-actions,
.helper-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

button,
a.btn,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  background: var(--green-800);
  color: #fff;
  padding: 9px 14px;
  font: inherit;
  font-weight: 750;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

button:hover,
a.btn:hover,
.btn:hover {
  background: var(--green-700);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(18, 61, 43, 0.18);
  text-decoration: none;
}

.btn.small {
  min-height: 34px;
  padding: 7px 10px;
  font-size: 0.9rem;
}

.btn.danger,
.btn-delete,
a[href*="delete_"] {
  background: var(--danger);
  color: #fff;
}

.btn.secondary,
.btn-back {
  background: var(--green-100);
  color: var(--green-900);
}

.event-list {
  display: grid;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}

.event-list li,
.task-box,
.task-card,
.admin-status,
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.event-list li,
.task-box,
.task-card,
.admin-status,
.panel {
  padding: 18px;
}

.event-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.event-header strong,
.task-card strong {
  color: var(--green-900);
  font-size: 1.05rem;
}

.admin-status ul {
  display: grid;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.admin-status li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 650;
}

.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.online {
  background: #1f9d55;
}

.offline {
  background: #b7c1ba;
}

form {
  display: grid;
  gap: 12px;
  max-width: 640px;
  padding: 22px;
  margin-bottom: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

label {
  display: block;
  color: var(--text);
  font-weight: 700;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="tel"],
select,
textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--green-700);
  box-shadow: 0 0 0 3px rgba(40, 118, 77, 0.15);
  outline: none;
}

.zeitgruppe {
  display: grid;
  grid-template-columns: 1fr 1fr minmax(120px, 0.8fr);
  gap: 10px;
  margin-bottom: 10px;
}

.time-options {
  display: grid;
  gap: 8px;
}

.time-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
  font-weight: 650;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  background: var(--green-900);
  color: #fff;
}

tr:last-child td {
  border-bottom: 0;
}

.login-page {
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(180deg, rgba(231, 242, 235, 0.95), rgba(246, 248, 245, 1)),
    var(--surface-soft);
}

.login-container {
  width: min(100%, 420px);
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.login-container h2 {
  text-align: center;
}

.login-container form {
  padding: 0;
  margin: 0;
  border: 0;
  box-shadow: none;
}

.error {
  margin-bottom: 14px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--danger-soft);
  color: var(--danger);
  text-align: center;
  font-weight: 700;
}

.helper-row {
  margin: 10px 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-soft);
}

.helper-times {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.time-chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--green-100);
  color: var(--green-900);
  font-size: 0.9rem;
  font-weight: 750;
}

@media (max-width: 760px) {
  .main-header .container,
  .admin-header-inner,
  .event-header,
  nav,
  .event-actions,
  .top-actions {
    align-items: stretch;
    flex-direction: column;
  }

  a.btn,
  .btn,
  button {
    width: 100%;
  }

  .zeitgruppe {
    grid-template-columns: 1fr;
  }

  table,
  thead,
  tbody,
  th,
  td,
  tr {
    display: block;
  }

  thead {
    display: none;
  }

  tr {
    padding: 12px;
    border-bottom: 1px solid var(--line);
  }

  tr:last-child {
    border-bottom: 0;
  }

  td {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    border: 0;
    padding: 8px 0;
  }

  td::before {
    content: attr(data-label);
    color: var(--muted);
    font-weight: 700;
  }
}