:root {
  --bg:        #f1f5f9;
  --surface:   #ffffff;
  --card:      #ffffff;
  --border:    #e2e8f0;
  --border-md: #cbd5e1;
  --text:      #0f172a;
  --text-md:   #334155;
  --muted:     #64748b;
  --subtle:    #94a3b8;

  --blue:      #3b82f6;
  --blue-dk:   #2563eb;
  --blue-bg:   #eff6ff;
  --green:     #10b981;
  --green-bg:  #ecfdf5;
  --red:       #ef4444;
  --red-bg:    #fef2f2;
  --amber:     #f59e0b;
  --amber-bg:  #fffbeb;
  --indigo:    #6366f1;
  --indigo-bg: #eef2ff;

  --radius:    8px;
  --radius-lg: 12px;
  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --sidebar:   240px;
  --topbar-h:  56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; font-size: 14px; line-height: 1.5; }

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dk); }

/* ── LAYOUT ── */
.admin-wrap { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar); flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; height: 100vh;
  z-index: 100;
  transition: transform .25s ease;
}
.sidebar-brand {
  height: var(--topbar-h);
  display: flex; align-items: center; gap: .6rem;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: .95rem; font-weight: 700; color: var(--text);
}
.sidebar-brand-icon {
  width: 28px; height: 28px;
  background: var(--blue); border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  font-size: .85rem; color: #fff; flex-shrink: 0;
}
.sidebar-nav { flex: 1; padding: .75rem .75rem 0; overflow-y: auto; }
.sidebar-nav a {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .85rem; border-radius: var(--radius);
  color: var(--muted); font-size: .875rem; font-weight: 500;
  transition: background .15s, color .15s; margin-bottom: 2px;
}
.sidebar-nav a:hover { background: var(--bg); color: var(--text-md); }
.sidebar-nav a.active { background: var(--blue-bg); color: var(--blue-dk); font-weight: 600; }
.sidebar-nav .nav-icon { width: 18px; text-align: center; font-size: .9rem; flex-shrink: 0; }
.sidebar-section {
  padding: 1rem .75rem .25rem;
  font-size: .7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .07em; color: var(--subtle);
}
.sidebar-footer { padding: .75rem; border-top: 1px solid var(--border); }
.sidebar-footer a {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .85rem; border-radius: var(--radius);
  color: var(--muted); font-size: .875rem; font-weight: 500;
  transition: background .15s, color .15s;
}
.sidebar-footer a:hover { background: var(--red-bg); color: var(--red); }

/* Overlay (mobile) */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.35); z-index: 99;
}

.main-content { margin-left: var(--sidebar); flex: 1; display: flex; flex-direction: column; min-height: 100vh; min-width: 0; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--topbar-h);
  background: var(--surface); border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.topbar-left { display: flex; align-items: center; gap: .75rem; }
.topbar h1 { font-size: 1rem; font-weight: 600; color: var(--text); }
.topbar-right { display: flex; align-items: center; gap: .75rem; }
.topbar-user { display: flex; align-items: center; gap: .5rem; font-size: .8rem; color: var(--muted); }
.topbar-avatar {
  width: 28px; height: 28px; background: var(--indigo-bg);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: .75rem; color: var(--indigo); font-weight: 700;
}

/* Hamburger */
.btn-hamburger {
  display: none; background: none; border: none; cursor: pointer;
  padding: .35rem; border-radius: var(--radius);
  color: var(--muted); font-size: 1.2rem; line-height: 1;
  transition: background .15s; flex-shrink: 0;
}
.btn-hamburger:hover { background: var(--bg); color: var(--text); }

.content { padding: 1.5rem; flex: 1; }

/* ── STAT CARDS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem; margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.25rem;
  box-shadow: var(--shadow); display: flex; flex-direction: column; gap: .3rem;
}
.stat-icon {
  width: 36px; height: 36px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; margin-bottom: .25rem;
}
.stat-value { font-size: 1.75rem; font-weight: 800; line-height: 1; color: var(--text); }
.stat-label { font-size: .75rem; color: var(--muted); font-weight: 500; }
.stat-blue   .stat-icon { background: var(--blue-bg);   color: var(--blue); }
.stat-green  .stat-icon { background: var(--green-bg);  color: var(--green); }
.stat-red    .stat-icon { background: var(--red-bg);    color: var(--red); }
.stat-amber  .stat-icon { background: var(--amber-bg);  color: var(--amber); }
.stat-indigo .stat-icon { background: var(--indigo-bg); color: var(--indigo); }

/* ── CARDS ── */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow); margin-bottom: 1.25rem;
}
.card-header {
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  font-weight: 600; font-size: .9rem; color: var(--text); flex-wrap: wrap;
}
.card-body { padding: 1.25rem; }

/* ── TABLE ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 480px; }
th {
  padding: .6rem 1rem; text-align: left;
  font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .06em; color: var(--muted);
  background: var(--bg); border-bottom: 1px solid var(--border); white-space: nowrap;
}
td {
  padding: .75rem 1rem; border-bottom: 1px solid var(--border);
  font-size: .875rem; color: var(--text-md); vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #fafbff; }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .2rem .6rem; border-radius: 20px;
  font-size: .72rem; font-weight: 600; white-space: nowrap;
}
.badge-pending   { background: var(--amber-bg);  color: #b45309; border: 1px solid #fde68a; }
.badge-confirmed { background: var(--green-bg);  color: #065f46; border: 1px solid #a7f3d0; }
.badge-cancelled { background: #f8fafc;          color: var(--muted); border: 1px solid var(--border); }
.badge-active    { background: var(--blue-bg);   color: var(--blue-dk); border: 1px solid #bfdbfe; }
.badge-inactive  { background: #f8fafc;          color: var(--muted);   border: 1px solid var(--border); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .45rem 1rem; border-radius: var(--radius);
  font-size: .85rem; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: all .15s;
  text-decoration: none; white-space: nowrap;
  font-family: inherit; line-height: 1.4;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: none; box-shadow: none; }
.btn-primary { background: var(--blue);     color: #fff;       border-color: var(--blue-dk); }
.btn-primary:hover { background: var(--blue-dk); color: #fff; }
.btn-success { background: var(--green-bg); color: #065f46;    border-color: #a7f3d0; }
.btn-success:hover { background: #d1fae5; }
.btn-danger  { background: var(--red-bg);   color: #991b1b;    border-color: #fecaca; }
.btn-danger:hover { background: #fee2e2; }
.btn-ghost   { background: var(--bg);       color: var(--text-md); border-color: var(--border); }
.btn-ghost:hover { background: var(--border); }
.btn-indigo  { background: var(--indigo-bg); color: #4338ca;   border-color: #c7d2fe; }
.btn-indigo:hover { background: #e0e7ff; }
.btn-sm { padding: .3rem .7rem; font-size: .78rem; }

/* ── FORMS ── */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: .85rem; }
.field { display: flex; flex-direction: column; gap: .3rem; }
label { font-size: .78rem; font-weight: 600; color: var(--text-md); }
input, select, textarea {
  background: var(--surface); border: 1px solid var(--border-md);
  color: var(--text); border-radius: var(--radius);
  padding: .55rem .8rem; font-size: .875rem;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit; width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}
textarea { resize: vertical; min-height: 80px; }

/* ── FLASH ── */
.flash {
  padding: .75rem 1rem; border-radius: var(--radius);
  margin-bottom: 1.25rem; font-size: .875rem; font-weight: 500;
  display: flex; align-items: center; gap: .5rem;
}
.flash-success { background: var(--green-bg); border: 1px solid #a7f3d0; color: #065f46; }
.flash-error   { background: var(--red-bg);   border: 1px solid #fecaca; color: #991b1b; }

/* ── FILTER TABS ── */
.filter-tabs { display: flex; gap: .4rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.filter-tab {
  padding: .35rem .85rem; border-radius: 20px; font-size: .8rem; font-weight: 500;
  border: 1px solid var(--border); color: var(--muted); cursor: pointer;
  text-decoration: none; transition: all .15s; background: var(--surface);
}
.filter-tab:hover { border-color: var(--blue); color: var(--blue); }
.filter-tab.active { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ── EMPTY STATE ── */
.empty { text-align: center; padding: 3rem 1rem; color: var(--muted); }
.empty-icon { font-size: 2rem; margin-bottom: .75rem; opacity: .5; }

/* ── ACTIONS ── */
.actions { display: flex; gap: .35rem; flex-wrap: wrap; align-items: center; }

/* ── DROPDOWN (Bearbeiten) ── */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
  position: absolute; right: 0; top: calc(100% + .35rem);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  padding: 1.1rem; z-index: 200; min-width: 280px;
}
.dropdown summary { list-style: none; }
.dropdown summary::-webkit-details-marker { display: none; }

/* ── LOGIN ── */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center;
  justify-content: center; padding: 1.5rem; background: var(--bg);
}
.login-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2.25rem 2rem;
  width: 100%; max-width: 380px; box-shadow: var(--shadow-md);
}
.login-logo { display: flex; align-items: center; gap: .6rem; margin-bottom: 1.5rem; }
.login-logo-icon {
  width: 36px; height: 36px; background: var(--blue);
  border-radius: 9px; display: flex; align-items: center;
  justify-content: center; font-size: 1rem; color: #fff;
}
.login-logo-text { font-size: 1rem; font-weight: 700; color: var(--text); }
.login-logo-text small { display: block; font-size: .75rem; font-weight: 400; color: var(--muted); }
.login-card .field { margin-bottom: .9rem; }
.login-card .btn-primary { width: 100%; justify-content: center; padding: .65rem; margin-top: .25rem; }

hr { border: none; border-top: 1px solid var(--border); margin: 1.25rem 0; }

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-md); }
  .sidebar-overlay.open { display: block; }
  .btn-hamburger { display: flex; }
  .main-content { margin-left: 0; }
  .content { padding: 1rem; }
  .topbar { padding: 0 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: .75rem; }
  .stat-card { padding: 1rem; }
  .stat-value { font-size: 1.4rem; }
  .form-grid { grid-template-columns: 1fr; }
  .dropdown-menu { right: auto; left: 0; min-width: 260px; }
  .actions { gap: .25rem; }
  .btn-sm { padding: .28rem .6rem; font-size: .75rem; }
}

@media (max-width: 420px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: .6rem; }
  .filter-tabs { gap: .3rem; }
  .filter-tab { font-size: .75rem; padding: .3rem .7rem; }
  .login-card { padding: 1.75rem 1.25rem; }
}