/* Minimal custom styles for mobile-friendly look */
.body-reset {
  margin: 0;
}
html, body { margin: 0; padding: 0; width: 100%; }
body{margin:0;background:#f4f6f8}
.card {box-shadow: 0 6px 18px rgba(15,15,15,0.06); border-radius:8px}
.table-responsive {overflow-x:auto}
.navbar-brand .bi{margin-right:8px}
.nav-link{color:rgba(255,255,255,0.9)}
@media (max-width:576px){
  .navbar-brand{font-size:1rem}
  main.container{padding:0.5rem}
}
.is-invalid{border-color:#dc3545}
.invalid-feedback{display:block}
.card h3{margin-bottom:1rem}

 /* Theme tweaks */
:root { --theme-primary: #0b66ff; --theme-accent: #0b5ed7; --muted: #6c757d; --card-bg: #ffffff; --theme-primary-contrast: #fff; }
.nav-inner{background-color:var(--theme-primary);border-radius:10px;margin:0 0 1.25rem 0;padding:.75rem 1rem}
.nav-inner .navbar-brand{color:var(--theme-primary-contrast);padding-left:0}
.nav-inner .nav-link{color:rgba(255,255,255,0.98);font-weight:500}
.navbar{position:static;width:auto}
.main-offset{padding-top:0}
.btn-primary{background-color:var(--theme-accent);border-color:var(--theme-accent);box-shadow:0 6px 18px rgba(11,94,215,0.08)}
.btn-primary:hover{background-color:#094fb0;border-color:#094fb0}
.btn .bi{margin-right:6px}
.btn-sm .bi{margin-right:4px;font-size:0.9em}

/* Dashboard room tiles */
.room-tile{background:#fff;border:1px solid rgba(0,0,0,0.06);border-radius:10px;box-shadow:0 6px 14px rgba(10,10,10,0.04);transition:transform .12s ease,box-shadow .12s ease;padding:1rem;text-align:left}
.room-tile:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(10,10,10,0.07)}
.room-name{font-size:1rem}
.room-tile .badge{font-size:0.75rem}
.room-tile:disabled{cursor:not-allowed;transform:none;opacity:0.7}

@media (max-width:576px){
  .room-tile{padding:.75rem}
}

/* Floating alert (custom in-page modal notification) */
#floating-alert{min-width:280px;max-width:720px;border-radius:8px;padding:.9rem 1rem;font-size:0.95rem}
#floating-alert.fade{opacity:0}

/* Semi-formal tweaks */
body { font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; color:#222 }
.card h2, .card h3 { font-weight:600 }
.brand-title{font-weight:700;letter-spacing:0.2px}
.navbar .nav-link i{opacity:0.95}
.teacher-row .bi{color:var(--theme-accent);margin-right:8px}

/* Icon accent for tiles */
.room-tile .room-name:before{content:'\1F4CB';display:inline-block;margin-right:8px;font-size:0.98em}

/* Teacher list row */
.teacher-row td{vertical-align:middle}
.teacher-row .name-cell{font-weight:600}
.teacher-row .room-cell .bi{color:var(--muted);opacity:0.9;margin-left:6px}

/* =========================
   Extra color & button styles
   ========================= */
:root{
  --accent-emerald: #16a34a;
  --accent-coral: #ff6b6b;
  --accent-sky: #06b6d4;
  --btn-radius: 10px;
}

/* richer palette for buttons */
.btn-emerald { background: linear-gradient(180deg,var(--accent-emerald), #0f8b3a); border: none; color:#fff; }
.btn-coral   { background: linear-gradient(180deg,var(--accent-coral), #e04f4f); border: none; color:#fff; }
.btn-sky     { background: linear-gradient(180deg,var(--accent-sky), #059fb6); border: none; color:#fff; }

.btn, .btn-primary, .btn-secondary {
  border-radius: var(--btn-radius);
  transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
  padding: 0.5rem .9rem;
}

.btn:active { transform: translateY(1px) scale(.995); }
.btn:hover  { filter: brightness(.98); box-shadow: 0 10px 30px rgba(10,10,25,0.08); }

/* emoji burst: container and animation */
.btn-emoji { position: relative; overflow: visible; }

.emoji-burst {
  position: absolute;
  left: 50%;
  top: -6px;
  transform: translateX(-50%) translateY(0);
  pointer-events: none;
  font-size: 1.2rem;
  opacity: 0;
  animation: emoji-pop 900ms cubic-bezier(.2,.9,.2,1);
  filter: drop-shadow(0 6px 18px rgba(0,0,0,0.12));
}

@keyframes emoji-pop {
  0%   { transform: translateX(-50%) translateY(0) scale(.6); opacity:0; }
  20%  { transform: translateX(-50%) translateY(-8px) scale(1.05); opacity:1; }
  60%  { transform: translateX(-50%) translateY(-36px) scale(1); opacity:1; }
  100% { transform: translateX(-50%) translateY(-64px) scale(.9); opacity:0; }
}

/* small responsive tweak so icon-only view on tiny screens */
@media (max-width:420px) {
  .btn .bi { margin-right: 6px; }
  .btn .btn-label { display:inline-block; }
}

/* Layout spacing: ให้ทั้งหน้าไม่ชิดขอบหน้าต่าง */
html, body {
  box-sizing: border-box;
  padding: 18px; /* ปรับค่าเป็น 12/24/32 ตามความชอบ */
  background: #f5f7f8; /* ถ้าต้องการพื้นหลังนวล ๆ */
}

/* จำกัดความกว้างของเนื้อหาและจัดกึ่งกลาง */
.container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* ให้ navbar/กล่องมีมุมมนและไม่ชนขอบภายในพื้นที่ padding */
.navbar {
  border-radius: 10px;
  overflow: visible;
}

/* Theme / spacing tweaks */
:root{
  --primary:#1672ff;
  --primary-dark:#0f5fd4;
  --accent:#e6f0ff;
  --muted:#6c757d;
  --card-border:rgba(16,24,40,0.04);
}

body{
  background: linear-gradient(180deg,#f7f9fb 0%,#eef3f7 100%);
  color:#213547;
  padding:18px;
}

/* ทำให้ navbar ดูเด่นขึ้น แต่ไม่ชนกับขอบ */
.navbar{
  background:var(--primary) !important;
  box-shadow:0 8px 24px rgba(16,89,255,0.10);
  border-radius:12px;
  padding:.6rem 1rem;
  margin-bottom:12px; /* ลดระยะห่างจากข้างล่าง */
}

/* ลดช่องว่างระหว่าง navbar กับเนื้อหา */
main.container.my-4{
  margin-top:8px !important;
  margin-bottom:18px !important;
  max-width:1200px;
}

/* ให้กล่องเนื้อหาดูเป็นการ์ดนวล ๆ */
.rounded-3,
.card,
.panel,
.table-wrapper{
  background: linear-gradient(180deg,#ffffff 0%, #fbfdff 100%);
  border:1px solid var(--card-border);
  box-shadow:0 10px 30px rgba(19,37,68,0.04);
  border-radius:12px;
  padding:1rem 1.25rem;
}

/* ตารางดูสะอาดมีไฮไลต์ */
.table thead th{
  color:var(--primary-dark);
  font-weight:700;
  border-bottom:2px solid rgba(0,0,0,0.06);
}
.table>tbody>tr:nth-child(odd){
  background:rgba(230,240,255,0.25);
}
.table-hover tbody tr:hover{
  background: rgba(22,114,255,0.06);
  transition:background .12s;
}

/* ปรับปุ่มให้มีเงาเล็กน้อย */
.btn-primary{
  background:var(--primary);
  border-color:var(--primary);
  box-shadow:0 8px 20px rgba(22,114,255,0.12);
}
.btn-outline-secondary{
  border-color:#6c757d;
  color:#495057;
}

/* Search box / pill button */
.input-group .form-control{
  border-radius:8px 0 0 8px;
}
.input-group .btn{
  border-radius:0 8px 8px 0;
}

/* Footer นุ่มขึ้น */
footer.bg-light{
  background:transparent;
  color:#6b7280;
  margin-top:18px;
}

/* Status indicator animations */
.status {
  display:flex;
  align-items:center;
  gap:.6rem;
  white-space:nowrap;
}
.status-dot{
  width:14px;
  height:14px;
  border-radius:50%;
  display:inline-block;
  position:relative;
  flex:0 0 14px;
  box-shadow:0 2px 8px rgba(18,40,80,0.08);
  /* default dot color: gray when no room */
  background: #6c757d;
  transition:transform .12s ease, box-shadow .12s;
}
.status-label{
  font-size:.9rem;
  color:var(--muted,#6b7280);
}

/* states */
.status-dot.in-room::after{
  content:"";
  position:absolute;
  left:50%; top:50%;
  transform:translate(-50%,-50%);
  width:14px;height:14px;border-radius:50%;
  box-shadow:0 0 0 rgba(40,167,69,0.25);
  animation:status-pulse 1.6s infinite;
  pointer-events:none;
}
.status-dot.busy{ background:#ff7a00; }            /* orange */
.status-dot.away{ background:#ffc107; }
.status-dot.offline{ opacity:.9; transform:scale(.98); }

/* small glow on hover */
.status-dot:hover{ transform:scale(1.06); box-shadow:0 6px 18px rgba(16,24,40,0.12); }

/* pulse animation */
@keyframes status-pulse{
  0%{ transform:translate(-50%,-50%) scale(1); opacity:0.55; }
  50%{ transform:translate(-50%,-50%) scale(1.9); opacity:0.18; }
  100%{ transform:translate(-50%,-50%) scale(2.6); opacity:0; }
}

/* compact for small screens */
@media (max-width:720px){
  /* keep the status/room label visible on small screens but truncated to save space */
  .status-label{
    display:inline-block;
    max-width:120px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    font-size:.85rem;
    vertical-align:middle;
  }
  .status-dot{ width:12px; height:12px; }
}

/* When an element has a room, force the dot to green and keep it persistent */
.status.has-room .status-dot { background: #28a745 !important; }

/* Mobile-first improvements */
:root{
  --mobile-gap: 12px;
}

/* make tables scrollable on small devices and touch-friendly */
.table-responsive{
  -webkit-overflow-scrolling: touch;
  overflow-x: auto;
  padding-bottom: 6px;
}

/* compact paddings on small screens */
@media (max-width: 767.98px){
  body{
    padding:12px;
    background: linear-gradient(180deg,#fbfdff 0%,#f2f6f9 100%);
  }

  .navbar{
    padding: .5rem .75rem;
    border-radius:10px;
  }

  .navbar .navbar-brand{ font-size:1.05rem; }
  .nav-label{ display:none; } /* show icons only to save space */

  main.container{
    padding:0;
    margin-top:8px;
  }

  /* search box full width and stacked */
  .page-actions{
    display:flex;
    gap:8px;
    flex-direction:column;
  }
  .page-actions .input-group{ width:100%; }

  /* table: make rows feel like cards while keeping columns */
  .table{
    min-width:700px; /* allow horizontal scroll if needed */
  }

  /* buttons larger touch targets */
  .btn{
    padding:.5rem .8rem;
    font-size:.95rem;
  }

  /* smaller labels in status */
  .status-label{ font-size:.85rem; }

  /* footer spacing */
  footer.bg-light{ padding: 14px 8px; font-size:.85rem; }

  /* card look for table wrapper */
  .table-wrapper{
    border-radius:10px;
    padding:.6rem;
  }
}

/* Optional: nicer card layout for very small screens (<420px) */
@media (max-width:420px){
  .navbar .bi{ font-size:1.05rem; }
  .navbar .navbar-brand{ font-size:1rem; }
  /* still show a compact truncated label on very small screens */
  .status-label{
    display:inline-block;
    max-width:90px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    font-size:.78rem;
    vertical-align:middle;
  }
}

/* แสดง/ซ่อนป้ายเมนูอย่างถูกต้องบนมือถือ:
   - ซ่อนป้ายเพื่อประหยัดพื้นที่ในบาร์แถวเดียว
   - แต่ถ้าเปิดเมนู (collapsed show) ให้แสดงป้ายด้วย */
@media (max-width: 767.98px) {
  .nav-label { display: none; }

  /* เมื่อเมนูถูกขยาย (ผู้ใช้กดปุ่ม) ให้แสดงข้อความข้างไอคอน */
  .navbar-collapse.show .nav-label,
  .navbar-collapse .nav-link .nav-label { display: inline-block; margin-left: .45rem; }

  /* ถ้าต้องการให้ไอคอน+ข้อความเรียงแนวตั้งในเมนูเปิด */
  .navbar-collapse.show .navbar-nav { flex-direction: column; gap: .6rem; }
  .navbar-collapse.show .nav-link { color: #ffffff; padding: .45rem 0; }
}

/* ปรับขนาดปุ่ม toggler ถ้าใหญ่เกินไป */
.navbar-toggler { padding: .25rem .5rem; border-radius: 8px; }