/* ==============================================================================
   Schulweg-Sicherheit - Pure Vanilla CSS Design System
   Zero build step · Zero npm/Node.js dependencies · Lightweight & Mobile-First
   ============================================================================== */

:root {
  --primary: #047857;
  --primary-hover: #065f46;
  --primary-light: #ecfdf5;
  --primary-border: #a7f3d0;
  --primary-text: #064e3b;

  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-alt: #f1f5f9;

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;

  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --red: #dc2626;
  --red-hover: #b91c1c;
  --red-bg: #fef2f2;
  --red-border: #fecaca;
  --red-text: #991b1b;

  --amber: #d97706;
  --amber-hover: #b45309;
  --amber-bg: #fffbeb;
  --amber-border: #fde68a;
  --amber-text: #92400e;

  --green: #10b981;
  --green-bg: #ecfdf5;
  --green-border: #a7f3d0;
  --green-text: #065f46;

  --blue-bg: #eff6ff;
  --blue-border: #bfdbfe;
  --blue-text: #1d4ed8;

  --purple-bg: #faf5ff;
  --purple-border: #e9d5ff;
  --purple-text: #6b21a8;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

[x-cloak] {
  display: none !important;
}

/* Layout Containers */
.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 1.25rem 1rem;
  flex: 1;
}

.container-admin {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
  flex: 1;
}

/* Header */
.app-header {
  background: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-content {
  max-width: 600px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.125rem;
}

.header-badge {
  font-size: 0.75rem;
  background: #065f46;
  border: 1px solid #059669;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: #d1fae5;
}

/* Cards & Panels */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.25;
}

.card-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
}

/* Typography & Links */
h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 800;
}

a {
  color: var(--primary);
  text-decoration: underline;
}

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

.text-muted { color: var(--text-muted); }
.text-small { font-size: 0.75rem; }
.text-center { text-align: center; }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.05s ease;
  line-height: 1.25;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary { background: var(--primary); color: #ffffff; }
.btn-primary:hover { background: var(--primary-hover); color: #ffffff; }

.btn-dark { background: #0f172a; color: #ffffff; }
.btn-dark:hover { background: #1e293b; color: #ffffff; }

.btn-danger { background: var(--red); color: #ffffff; }
.btn-danger:hover { background: var(--red-hover); color: #ffffff; }

.btn-secondary { background: var(--surface-alt); color: var(--text-main); border-color: var(--border-strong); }
.btn-secondary:hover { background: #e2e8f0; }

.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.75rem; border-radius: var(--radius-sm); }
.btn-block { display: flex; width: 100%; }

/* Alerts & Notices */
.alert {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  border-left: 4px solid;
}

.alert-success { background: var(--green-bg); border-color: var(--green); color: var(--green-text); }
.alert-warning { background: var(--amber-bg); border-color: var(--amber); color: var(--amber-text); }
.alert-danger  { background: var(--red-bg);   border-color: var(--red);   color: var(--red-text); }
.alert-info    { background: var(--blue-bg);  border-color: #3b82f6;      color: var(--blue-text); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.badge-primary { background: var(--primary-light); color: var(--primary-text); border: 1px solid var(--primary-border); }
.badge-warning { background: var(--amber-bg); color: var(--amber-text); border: 1px solid var(--amber-border); }
.badge-danger  { background: var(--red-bg); color: var(--red-text); border: 1px solid var(--red-border); }
.badge-info    { background: var(--blue-bg); color: var(--blue-text); border: 1px solid var(--blue-border); }
.badge-purple  { background: var(--purple-bg); color: var(--purple-text); border: 1px solid var(--purple-border); }
.badge-neutral { background: #e2e8f0; color: #475569; }

/* Calendar Controls */
.nav-month {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.month-title {
  font-size: 1rem;
  font-weight: 800;
  text-transform: capitalize;
}

.legend-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  display: flex;
  justify-content: space-around;
  margin-bottom: 1rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot-red { background: var(--red); }
.dot-amber { background: var(--amber); }
.dot-green { background: var(--green); }
.dot-gray { background: var(--border-strong); }

/* Day Cards */
.day-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
}

.day-card-inactive {
  background: var(--surface-alt);
  opacity: 0.75;
}

.day-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
}

.day-title {
  font-size: 1rem;
  font-weight: 800;
}

/* Slot Selection Buttons */
.slot-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slot-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: all 0.1s ease;
}

.slot-red    { background: var(--red-bg);   border-color: var(--red-border);   color: var(--red-text); }
.slot-orange { background: var(--amber-bg); border-color: var(--amber-border); color: var(--amber-text); }
.slot-green  { background: var(--green-bg); border-color: var(--green-border); color: var(--green-text); }
.slot-past   { background: #f1f5f9; border-color: #e2e8f0; color: #94a3b8; cursor: not-allowed; opacity: 0.65; }

.slot-btn:not(.slot-past):hover {
  filter: brightness(0.97);
}

.slot-selected {
  outline: 2px solid var(--primary) !important;
  background: #d1fae5 !important;
  border-color: var(--primary) !important;
}

/* Sticky Bottom Action Bar */
.sticky-bar {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  max-width: 568px;
  margin: 0 auto;
  background: #0f172a;
  color: #ffffff;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 50;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal-dialog {
  background: var(--surface);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-light);
  cursor: pointer;
  line-height: 1;
}
.close-btn:hover { color: var(--text-main); }

/* Forms */
.form-group {
  margin-bottom: 0.875rem;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-family: inherit;
  font-size: 0.875rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--text-main);
  outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* Tables (Admin) */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  text-align: left;
}

.table th {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border-strong);
  color: var(--text-light);
  font-weight: 700;
}

.table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tbody tr:hover {
  background-color: var(--surface-alt);
}

/* Tabs */
.nav-tabs {
  display: flex;
  gap: 1.5rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.25rem;
}

.nav-tab {
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.5rem 0 0.65rem 0;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Global Footer */
.app-footer {
  background: #e2e8f0;
  color: #475569;
  font-size: 0.75rem;
  padding: 2rem 1rem;
  border-top: 1px solid #cbd5e1;
}

.duty-info-content p {
  margin-bottom: 0.5rem;
}
.duty-info-content p:last-child {
  margin-bottom: 0;
}
.duty-info-content ul, 
.duty-info-content ol {
  padding-left: 1.25rem;
  margin: 0.35rem 0;
}
.duty-info-content ul {
  list-style-type: disc;
}
.duty-info-content ol {
  list-style-type: decimal;
}
.duty-info-content a {
  color: inherit;
  font-weight: 700;
  text-decoration: underline;
}