/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --brand:      #C8102E;
  --brand-dark: #a00d24;
  --brand-light: #fce4e8;
  --green:      #16a34a;
  --green-bg:   #dcfce7;
  --red:        #C8102E;
  --red-bg:     #fce4e8;
  --yellow-bg:  #fef9c3;
  --yellow:     #ca8a04;
  --gray-50:    #f9fafb;
  --gray-100:   #f3f4f6;
  --gray-200:   #e5e7eb;
  --gray-400:   #9ca3af;
  --gray-600:   #4b5563;
  --gray-700:   #374151;
  --gray-900:   #333333;
  --radius:     8px;
  --shadow-sm:  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);
  --shadow-lg:  0 10px 25px rgba(0,0,0,.12), 0 4px 10px rgba(0,0,0,.08);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--gray-100);
  color: var(--gray-900);
  min-height: 100vh;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
.site-header {
  background: #fff;
  color: #333333;
  padding: 1rem 1.5rem;
  border-bottom: 2px solid #C8102E;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.header-logo { height: 2.5rem; width: auto; display: block; }
.site-header h1 { font-size: 1.35rem; font-weight: 700; }
.header-sub { font-size: .85rem; color: #333333; margin-top: .15rem; }

/* ── Main layout ──────────────────────────────────────────────────────────── */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* ── Date bar ─────────────────────────────────────────────────────────────── */
.date-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: .75rem 1.25rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.date-label { font-weight: 600; color: var(--gray-700); white-space: nowrap; }
.date-nav { display: flex; align-items: center; gap: .5rem; }
.btn-icon {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.btn-icon:hover { background: var(--brand-light); border-color: var(--brand); }
input[type="date"] {
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: .4rem .75rem;
  font-size: .95rem;
  font-family: var(--font);
  outline: none;
  transition: border-color .15s;
}
input[type="date"]:focus { border-color: var(--brand); }
.tz-note { font-size: .8rem; color: var(--gray-400); margin-left: auto; }

/* ── Banner ───────────────────────────────────────────────────────────────── */
.banner {
  padding: .8rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: .9rem;
}
.banner.error   { background: var(--red-bg);   color: var(--red);   border: 1px solid #f5a7b3; }
.banner.success { background: var(--green-bg); color: var(--green); border: 1px solid #86efac; }

/* ── Loading ──────────────────────────────────────────────────────────────── */
.loading-state {
  display: flex; flex-direction: column; align-items: center;
  gap: 1rem; padding: 3rem 0; color: var(--gray-600);
}
.spinner {
  width: 2.5rem; height: 2.5rem;
  border: 3px solid var(--gray-200);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Room grid ────────────────────────────────────────────────────────────── */
.room-grid { display: grid; gap: 1.25rem; }

.room-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.room-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.25rem;
  border-bottom: 1px solid var(--gray-100);
}
.room-name { font-weight: 700; font-size: 1rem; }
.room-status-pill {
  font-size: .75rem;
  font-weight: 600;
  padding: .2rem .65rem;
  border-radius: 999px;
}
.room-status-pill.available { background: var(--green-bg); color: var(--green); }
.room-status-pill.busy      { background: var(--red-bg);   color: var(--red);   }

/* ── Timeline ─────────────────────────────────────────────────────────────── */
.timeline-wrap {
  padding: .75rem 1.25rem 1rem;
}
.timeline-hours {
  display: flex;
  margin-bottom: .35rem;
  user-select: none;
}
.timeline-hour-label {
  flex: 1;
  font-size: .7rem;
  color: var(--gray-400);
  text-align: left;
  padding-left: 2px;
}
.timeline {
  position: relative;
  height: 36px;
  background: var(--gray-100);
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--gray-200);
}
.timeline:hover { border-color: var(--brand); }
.timeline-free-hint {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .75rem;
  color: var(--gray-400);
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s;
}
.timeline:hover .timeline-free-hint { opacity: 1; }
.timeline-block {
  position: absolute;
  top: 0; bottom: 0;
  border-radius: 4px;
  cursor: pointer;
  box-sizing: border-box;
  border-left: 2px solid #fff;
  border-right: 2px solid #fff;
}
.timeline-block.busy      { background: var(--red);    opacity: .85; }
.timeline-block.tentative { background: var(--yellow);  opacity: .7;  }

.book-btn {
  margin-top: .75rem;
  display: inline-block;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: .45rem 1rem;
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.book-btn:hover { background: var(--brand-dark); }

/* ── Event popover ────────────────────────────────────────────────────────── */
.event-popover {
  position: fixed;
  z-index: 200;
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: .6rem .9rem;
  max-width: 220px;
}
.event-popover-subject {
  font-weight: 600;
  font-size: .875rem;
  color: var(--gray-900);
  margin-bottom: .2rem;
}
.event-popover-time {
  font-size: .8rem;
  color: var(--gray-600);
}

/* ── Legend ───────────────────────────────────────────────────────────────── */
.legend {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.25rem;
  justify-content: center;
}
.legend-item { display: flex; align-items: center; gap: .4rem; font-size: .8rem; color: var(--gray-600); }
.swatch { width: 1rem; height: 1rem; border-radius: 3px; display: inline-block; }
.swatch-free      { background: var(--gray-100); border: 1px solid var(--gray-200); }
.swatch-busy      { background: var(--red);    opacity: .85; }
.swatch-tentative { background: var(--yellow); opacity: .7; }

/* ── Modal backdrop ───────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  display: none; align-items: center; justify-content: center;
  z-index: 100;
  padding: 1rem;
  animation: fadeIn .15s ease;
}
@keyframes fadeIn { from { opacity: 0; } }
.modal-backdrop:not([hidden]) { display: flex; }

.modal {
  background: #fff;
  border-radius: calc(var(--radius) * 1.5);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  width: 100%;
  max-width: 560px;
  position: relative;
  z-index: 1;
  animation: slideUp .2s ease;
  max-height: 90vh;
  overflow-y: auto;
}
@keyframes slideUp { from { transform: translateY(1.5rem); opacity: 0; } }

.modal-close {
  position: absolute; top: 1rem; right: 1rem;
  background: var(--gray-100);
  border: none; border-radius: 50%;
  width: 2rem; height: 2rem;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-600);
  transition: background .15s;
}
.modal-close:hover { background: var(--gray-200); }
.modal h2 { font-size: 1.3rem; margin-bottom: 1.25rem; color: var(--gray-900); }

/* ── Form ─────────────────────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--gray-700); }
.form-group input, .form-group textarea {
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: .5rem .75rem;
  font-size: .95rem;
  font-family: var(--font);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(200,16,46,.12);
}
.input-readonly { background: var(--gray-50); color: var(--gray-600); cursor: default; }
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}
.form-group + .form-group,
.form-row + .form-group,
.form-group + .form-row,
.form-row + .form-row { margin-top: 1rem; }

.req { color: var(--red); }

.form-error {
  margin-top: .75rem;
  background: var(--red-bg);
  color: var(--red);
  border: 1px solid #f5a7b3;
  border-radius: 6px;
  padding: .6rem .9rem;
  font-size: .875rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
  margin-top: 1.5rem;
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  padding: .55rem 1.25rem;
  border-radius: 6px;
  font-size: .925rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background .15s, opacity .15s;
  font-family: var(--font);
}
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn-primary   { background: var(--brand);     color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--brand-dark); }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-secondary:hover:not(:disabled) { background: var(--gray-200); }

.btn-label   { display: inline; }
.btn-spinner {
  width: 1em; height: 1em;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: inline-block;
}

/* ── Success state ────────────────────────────────────────────────────────── */
.booking-success {
  text-align: center;
  padding: 1rem 0;
}
.success-icon {
  width: 3.5rem; height: 3.5rem;
  background: var(--green-bg);
  color: var(--green);
  border-radius: 50%;
  font-size: 1.75rem;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1rem;
  font-weight: 700;
}
.booking-success h3 { font-size: 1.25rem; margin-bottom: .5rem; }
.booking-success p  { color: var(--gray-600); margin-bottom: 1.5rem; font-size: .925rem; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (min-width: 700px) {
  .room-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
  .date-bar { gap: .5rem; }
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: .8rem;
  color: var(--gray-600);
}
.footer-mailto {
  display: inline-block;
  padding: .35rem .9rem;
  border: 1px solid #C8102E;
  border-radius: 6px;
  color: #C8102E;
  background: #fff;
  font-size: .8rem;
  font-family: var(--font);
  text-decoration: none;
  transition: background .15s, color .15s;
}
.footer-mailto:hover {
  background: #C8102E;
  color: #fff;
}