/* ============================================================
   Raumbuchung Plugin – Frontend Styles
   ============================================================ */
:root {
  --rb-primary:    #1a5276;
  --rb-primary-h:  #154360;
  --rb-accent:     #2ecc71;
  --rb-accent-h:   #27ae60;
  --rb-danger:     #c0392b;
  --rb-warn-bg:    #fff3cd;
  --rb-success-bg: #d4efdf;
  --rb-bg:         #f8f9fa;
  --rb-card:       #ffffff;
  --rb-border:     #dee2e6;
  --rb-text:       #212529;
  --rb-muted:      #6c757d;
  --rb-radius:     10px;
  --rb-shadow:     0 4px 20px rgba(0,0,0,.08);
  --rb-trans:      .2s ease;
}

/* Wrapper */
.rb-app {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  max-width: 780px;
  margin: 0 auto;
  color: var(--rb-text);
  line-height: 1.5;
}

/* Schritt-Container */
.rb-step { animation: rbFadeIn .3s ease; }
.rb-hidden { display: none !important; }

@keyframes rbFadeIn {
  from { opacity:0; transform:translateY(12px); }
  to   { opacity:1; transform:translateY(0);    }
}

/* Heading */
.rb-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--rb-primary);
  margin: 0 0 1.25rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--rb-primary);
}

/* Step Header mit Back-Button */
.rb-step-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.rb-step-header .rb-heading { margin-bottom: 0; border-bottom: none; }

/* ── RAUMKARTEN ── */
.rb-rooms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}

.rb-room-card {
  background: var(--rb-card);
  border: 2px solid var(--rb-border);
  border-radius: var(--rb-radius);
  padding: 1.2rem .8rem;
  cursor: pointer;
  text-align: center;
  transition: border-color var(--rb-trans), transform var(--rb-trans), box-shadow var(--rb-trans);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .4rem;
}
.rb-room-card:hover {
  border-color: var(--rb-primary);
  transform: translateY(-3px);
  box-shadow: var(--rb-shadow);
}
.rb-room-card.active {
  border-color: var(--rb-primary);
  background: #eaf1f8;
}
.rb-room-icon  { font-size: 2rem; }
.rb-room-label { font-weight: 700; font-size: .95rem; color: var(--rb-primary); }
.rb-room-kap   { font-size: .75rem; color: var(--rb-muted); }

/* ── BADGE GEWÄHLTER RAUM ── */
.rb-selected-room-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: #eaf1f8;
  border: 1px solid var(--rb-primary);
  border-radius: 20px;
  padding: .35rem 1rem;
  font-weight: 600;
  color: var(--rb-primary);
  margin-bottom: 1rem;
  font-size: .9rem;
}

/* ── DATUM ── */
.rb-date-wrap {
  margin-bottom: 1.25rem;
}
.rb-date-wrap label {
  display: block;
  font-weight: 600;
  margin-bottom: .4rem;
}

/* ── ZEITGITTER ── */
.rb-time-legend {
  display: flex;
  gap: 1rem;
  font-size: .82rem;
  margin-bottom: .6rem;
  flex-wrap: wrap;
}
.rb-time-legend span { display:flex; align-items:center; gap:.35rem; }
.rb-time-legend span::before { content:''; width:16px; height:16px; border-radius:4px; display:inline-block; }
.rb-legend-free::before     { background:#e9ecef; border:1px solid #ced4da; }
.rb-legend-belegt::before   { background:#c0392b; }
.rb-legend-selected::before { background:var(--rb-primary); }

.rb-time-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 1rem;
}
@media (min-width: 500px) {
  .rb-time-grid { grid-template-columns: repeat(8, 1fr); }
}
@media (min-width: 700px) {
  .rb-time-grid { grid-template-columns: repeat(12, 1fr); }
}

.rb-time-slot {
  padding: .4rem .2rem;
  text-align: center;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  background: #e9ecef;
  border: 1px solid #ced4da;
  transition: background var(--rb-trans), color var(--rb-trans);
  user-select: none;
}
.rb-time-slot.belegt {
  background: #c0392b;
  color: #fff;
  cursor: not-allowed;
  border-color: #c0392b;
}
.rb-time-slot.selected {
  background: var(--rb-primary);
  color: #fff;
  border-color: var(--rb-primary);
}
.rb-time-slot:not(.belegt):hover {
  background: #aed6f1;
  border-color: var(--rb-primary);
}

.rb-time-selection-info {
  font-size: .88rem;
  color: var(--rb-primary);
  font-weight: 600;
  min-height: 1.4em;
  margin-bottom: .75rem;
}

/* ── FORMULAR ── */
.rb-booking-summary {
  background: var(--rb-warn-bg);
  border: 1px solid #ffc107;
  border-radius: var(--rb-radius);
  padding: .9rem 1.1rem;
  margin-bottom: 1.25rem;
  font-size: .9rem;
}
.rb-booking-summary strong { color: var(--rb-primary); }

.rb-form { display: flex; flex-direction: column; gap: .9rem; }

.rb-field label {
  display: block;
  font-weight: 600;
  margin-bottom: .3rem;
  font-size: .9rem;
}
.rb-required { color: var(--rb-danger); }
.rb-optional  { color: var(--rb-muted); font-weight: 400; font-size: .82rem; }

/* ── INPUTS ── */
.rb-input {
  width: 100%;
  padding: .6rem .9rem;
  border: 1.5px solid var(--rb-border);
  border-radius: var(--rb-radius);
  font-size: 1rem;
  transition: border-color var(--rb-trans), box-shadow var(--rb-trans);
  box-sizing: border-box;
  background: var(--rb-card);
}
.rb-input:focus {
  outline: none;
  border-color: var(--rb-primary);
  box-shadow: 0 0 0 3px rgba(26,82,118,.15);
}

/* ── CHECKBOX ── */
.rb-privacy { }
.rb-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  font-size: .87rem;
  cursor: pointer;
}
.rb-checkbox-label input { margin-top: 3px; }

/* ── BUTTONS ── */
.rb-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.4rem;
  border: none;
  border-radius: var(--rb-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--rb-trans), transform var(--rb-trans);
}
.rb-btn:active { transform: scale(.97); }

.rb-btn-primary {
  background: var(--rb-primary);
  color: #fff;
}
.rb-btn-primary:hover { background: var(--rb-primary-h); }

.rb-btn-secondary {
  background: var(--rb-accent);
  color: #fff;
}
.rb-btn-secondary:hover { background: var(--rb-accent-h); }

.rb-btn-submit { width: 100%; justify-content: center; }

.rb-back {
  background: none;
  border: none;
  color: var(--rb-primary);
  font-size: .9rem;
  cursor: pointer;
  padding: 0;
  font-weight: 600;
  white-space: nowrap;
}
.rb-back:hover { text-decoration: underline; }

/* ── ALERTS ── */
.rb-alert {
  padding: .85rem 1.1rem;
  border-radius: var(--rb-radius);
  margin: 1rem 0;
  font-weight: 600;
}
.rb-alert-success {
  background: var(--rb-success-bg);
  color: #155724;
  border: 1px solid #c3e6cb;
}
.rb-alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* ── ERFOLG ── */
.rb-success-box {
  text-align: center;
  padding: 2.5rem 1rem;
  background: var(--rb-card);
  border-radius: var(--rb-radius);
  box-shadow: var(--rb-shadow);
}
.rb-success-icon { font-size: 3.5rem; margin-bottom: .5rem; }
.rb-success-box h2 { color: var(--rb-accent); margin-bottom: .5rem; }
.rb-success-box p  { color: var(--rb-muted); margin-bottom: 1.25rem; }

/* ── SPINNER ── */
.rb-btn-spinner { animation: rb-spin 1s linear infinite; display: inline-block; }
@keyframes rb-spin { to { transform: rotate(360deg); } }

/* ── RESPONSIVE ── */
@media (max-width: 480px) {
  .rb-rooms-grid { grid-template-columns: repeat(2, 1fr); }
  .rb-step-header { flex-direction: column; align-items: flex-start; }
}