:root{
  --primary:#1e3a8a;
  --primary-2:#0c4a6e;
  --primary-dark:#0f1d54;
  --accent:#0891b2;
  --gold:#b45309;
  --success:#15803d;
  --warning:#d97706;
  --danger:#b91c1c;
  --bg:#f4f6fa;
  --bg-2:#eaeef5;
  --surface:#ffffff;
  --surface-2:#fbfcfe;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e2e8f0;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04),0 1px 3px rgba(15,23,42,.05);
  --shadow:0 6px 24px rgba(15,23,42,.06),0 2px 6px rgba(15,23,42,.04);
  --shadow-lg:0 24px 48px -12px rgba(15,23,42,.18);
  --radius:14px;
  --radius-sm:10px;
}
/* Dark mode — toggled via data-theme="dark" on <html> */
html[data-theme="dark"]{
  --bg:#0b1220;
  --bg-2:#0f172a;
  --surface:#1e293b;
  --surface-2:#172033;
  --text:#e2e8f0;
  --muted:#94a3b8;
  --border:#334155;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 6px 24px rgba(0,0,0,.4),0 2px 6px rgba(0,0,0,.3);
}
html[data-theme="dark"] body{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%);color:var(--text)}
html[data-theme="dark"] .card,html[data-theme="dark"] .modal-content,html[data-theme="dark"] .dropdown-menu{background:var(--surface);color:var(--text);border-color:var(--border)}
html[data-theme="dark"] .form-control,html[data-theme="dark"] .form-select{background:var(--surface-2);color:var(--text);border-color:var(--border)}
html[data-theme="dark"] .form-control::placeholder{color:var(--muted)}
html[data-theme="dark"] .table{color:var(--text);--bs-table-bg:transparent}
html[data-theme="dark"] .table thead th,html[data-theme="dark"] th{background:var(--surface-2)!important;color:var(--text);border-color:var(--border)}
html[data-theme="dark"] .text-muted{color:var(--muted)!important}
html[data-theme="dark"] .border-bottom,html[data-theme="dark"] .border-top,html[data-theme="dark"] .border{border-color:var(--border)!important}
html[data-theme="dark"] .modal-header,html[data-theme="dark"] .modal-footer{border-color:var(--border)}
html[data-theme="dark"] .btn-close{filter:invert(1) grayscale(1) brightness(2)}
html[data-theme="dark"] h1,html[data-theme="dark"] h2,html[data-theme="dark"] h3,html[data-theme="dark"] h4,html[data-theme="dark"] h5{color:#cbd5e1}
html[data-theme="dark"] .alert-light{background:var(--surface-2);color:var(--text);border-color:var(--border)}
html[data-theme="dark"] .bg-light{background:var(--surface-2)!important;color:var(--text)}
html[data-theme="dark"] .progress{background:var(--surface-2)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Heebo',system-ui,-apple-system,sans-serif;
  background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%);
  background-attachment:fixed;
  color:var(--text);
  direction:rtl;
  font-size:15px;
  line-height:1.55;
  letter-spacing:-.005em;
  min-height:100vh;
}
h1,h2,h3,h4,h5,h6{font-family:'Frank Ruhl Libre','Heebo',serif;letter-spacing:-.015em;font-weight:700;color:var(--primary-dark)}
h3{font-size:1.6rem;margin-bottom:.6rem}
h5{font-size:1.15rem}
h6{font-size:.95rem;color:var(--text);font-family:'Heebo',sans-serif;font-weight:600}

/* Navbar - elegant institutional gradient */
.navbar{
  background:linear-gradient(115deg,#0f1d54 0%,#1e3a8a 45%,#0c4a6e 100%)!important;
  color:#fff;
  padding:.85rem 0;
  box-shadow:0 8px 32px rgba(15,29,84,.18);
  border-bottom:3px solid rgba(255,255,255,.06);
  position:relative;
  overflow:hidden;
}
.navbar::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 85% 50%,rgba(8,145,178,.18) 0%,transparent 60%);
  pointer-events:none;
}
.navbar .container{position:relative;z-index:1}
.navbar-brand{
  display:flex;align-items:center;gap:14px;
  font-weight:700;font-size:1.35rem;color:#fff!important;
  font-family:'Frank Ruhl Libre',serif;letter-spacing:.01em;
}
.brand-logo{
  width:46px;height:46px;
  background:rgba(255,255,255,.97);
  border-radius:50%;
  padding:5px;
  box-shadow:0 6px 18px rgba(0,0,0,.18),inset 0 0 0 2px rgba(255,255,255,.4);
  object-fit:contain;
  flex-shrink:0;
}
.brand-text{font-size:1.35rem;line-height:1;text-shadow:0 2px 8px rgba(0,0,0,.18)}
#user-info{font-size:.92rem;font-weight:500}
#user-info .btn{font-size:.78rem;padding:.18rem .55rem;border-radius:6px;border-width:1px}

/* Cards - polished */
.card{
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  border:1px solid var(--border);
  background:var(--surface);
  transition:transform .25s cubic-bezier(.4,0,.2,1),box-shadow .25s,border-color .25s;
}
.card:hover{box-shadow:var(--shadow);border-color:#cbd5e1}
.card-tile{
  padding:2rem 1.25rem;
  text-align:center;cursor:pointer;
  background:linear-gradient(160deg,#fff 0%,#f8fafc 100%);
  border-top:3px solid transparent;
  position:relative;overflow:hidden;
}
.card-tile::after{
  content:'';position:absolute;top:0;right:0;left:0;height:3px;
  background:linear-gradient(90deg,var(--primary) 0%,var(--accent) 100%);
  transform:scaleX(0);transform-origin:center;
  transition:transform .35s cubic-bezier(.4,0,.2,1);
}
.card-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-tile:hover::after{transform:scaleX(1)}
.card-tile i{transition:transform .35s cubic-bezier(.4,0,.2,1);display:inline-block}
.card-tile:hover i{transform:scale(1.12) rotate(-3deg)}
.card-tile h5{margin-top:.85rem;color:var(--primary-dark)}
.card-tile p{font-size:.85rem;color:var(--muted);margin-bottom:0}

/* Buttons - refined */
.btn{font-weight:500;border-radius:9px;padding:.5rem 1.1rem;transition:all .2s;letter-spacing:.005em}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 100%);
  border:none;color:#fff;
  box-shadow:0 4px 12px rgba(30,58,138,.22);
}
.btn-primary:hover{
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);
  box-shadow:0 8px 20px rgba(30,58,138,.32);transform:translateY(-1px);
}
.btn-success{background:var(--success);border-color:var(--success)}
.btn-success:hover{background:#166534;border-color:#166534}
.btn-danger{background:var(--danger);border-color:var(--danger)}
.btn-outline-primary{color:var(--primary);border-color:var(--primary)}
.btn-outline-primary:hover{background:var(--primary);border-color:var(--primary)}
.btn-link{color:var(--primary);text-decoration:none;font-weight:500}
.btn-link:hover{color:var(--primary-dark);text-decoration:underline}

/* Login page - hero card */
#page-login .card{
  padding:2.5rem 2rem!important;
  margin-top:3rem!important;
  background:linear-gradient(160deg,#fff 0%,#fafbfd 100%);
  box-shadow:var(--shadow-lg),0 0 0 1px var(--border);
  border:none;
}
#page-login h3{
  text-align:center;
  font-size:1.75rem;color:var(--primary-dark);
  margin-bottom:1.75rem!important;
  font-family:'Frank Ruhl Libre',serif;
}

/* Avatars and badges */
.avatar{
  width:42px;height:42px;border-radius:50%;
  background:linear-gradient(135deg,#dbeafe,#bfdbfe);
  color:#1e40af;display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.95rem;
  margin-left:8px;flex-shrink:0;
  box-shadow:inset 0 0 0 2px #fff,0 2px 6px rgba(30,58,138,.18);
}
.cat-badge{
  display:inline-block;padding:4px 14px;border-radius:16px;
  font-size:.8rem;font-weight:500;
  background:#dbeafe;color:#1e40af;
  border:1px solid #bfdbfe;
}

/* Severity rows */
.severity-high{border-right:4px solid var(--danger);background:linear-gradient(to left,#fef2f2 0%,#fff 35%)}
.severity-mid{border-right:4px solid var(--warning);background:linear-gradient(to left,#fffbeb 0%,#fff 35%)}
.severity-low{border-right:4px solid var(--success);background:linear-gradient(to left,#f0fdf4 0%,#fff 35%)}

/* Role badges */
.role-admin{background:linear-gradient(135deg,#fef3c7,#fde68a);color:#78350f;font-weight:600;padding:.3rem .8rem}
.role-rabbi{background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:#1e3a8a;font-weight:600;padding:.3rem .8rem}
.role-readonly{background:#f1f5f9;color:#475569;font-weight:500;padding:.3rem .8rem}

/* Form controls */
.form-control,.form-select{
  border:1.5px solid var(--border);
  padding:.65rem .95rem;
  border-radius:var(--radius-sm);
  font-size:.95rem;
  background:var(--surface-2);
  transition:border-color .2s,box-shadow .2s,background .2s;
}
.form-control:hover,.form-select:hover{background:#fff}
.form-control:focus,.form-select:focus{
  box-shadow:0 0 0 4px rgba(30,58,138,.12);
  border-color:var(--primary);
  background:#fff;
}
.form-label{font-weight:500;font-size:.88rem;color:var(--text);margin-bottom:.4rem}

/* Tables - refined */
.table{font-size:.92rem;color:var(--text)}
.table thead th{
  background:linear-gradient(180deg,#f8fafc,#f1f5f9);
  font-weight:600;font-size:.78rem;
  border-bottom:2px solid var(--border);
  color:var(--muted);
  text-transform:uppercase;letter-spacing:.04em;
  padding:.85rem .75rem;
}
.table tbody td{padding:.75rem;border-color:#f1f5f9;vertical-align:middle}
.table-hover tbody tr{transition:background .15s,transform .15s}
.table-hover tbody tr:hover{background:#f8fafc}

/* Modal - polished */
.modal-content{
  border-radius:var(--radius);
  border:none;
  box-shadow:0 32px 80px rgba(15,23,42,.22);
  overflow:hidden;
}
.modal-header{
  background:linear-gradient(135deg,#f8fafc,#f1f5f9);
  border-bottom:1px solid var(--border);
  padding:1.1rem 1.4rem;
}
.modal-header h5{margin:0;font-family:'Frank Ruhl Libre',serif;color:var(--primary-dark)}
.modal-body{padding:1.4rem}

/* Stats display */
.display-6{
  font-weight:800;
  color:var(--primary);
  font-family:'Frank Ruhl Libre',serif;
  letter-spacing:-.02em;
}

/* Misc */
.text-muted{color:var(--muted)!important}
.alert-success{background:#dcfce7;color:#166534;border:1px solid #86efac;border-radius:var(--radius-sm)}
.alert-danger{background:#fef2f2;color:#991b1b;border:1px solid #fca5a5;border-radius:var(--radius-sm)}

/* Sync indicator */
.sync-indicator{
  position:fixed;bottom:20px;left:20px;
  padding:.55rem 1rem;border-radius:24px;
  background:#fff;box-shadow:var(--shadow);
  font-size:.82rem;font-weight:500;
  z-index:1000;
  border:1px solid var(--border);
  display:flex;align-items:center;gap:.5rem;
}
.sync-online{color:var(--success)}
.sync-offline{color:var(--warning)}

/* Toast notifications */
.toast-container{position:fixed;top:24px;left:24px;z-index:9999}
.toast-msg{
  background:#fff;border-radius:var(--radius-sm);
  box-shadow:0 16px 40px rgba(15,23,42,.18);
  padding:14px 20px;margin-bottom:12px;
  display:flex;align-items:center;gap:12px;
  animation:slideIn .35s cubic-bezier(.4,0,.2,1);
  border-right:4px solid var(--primary);
  max-width:400px;font-weight:500;
}
.toast-msg.success{border-color:var(--success)}
.toast-msg.error{border-color:var(--danger)}
.toast-msg.warn{border-color:var(--warning)}
@keyframes slideIn{from{transform:translateX(-30px);opacity:0}to{transform:translateX(0);opacity:1}}
@keyframes fadeOut{to{opacity:0;transform:translateX(-30px)}}
.toast-msg.fadeOut{animation:fadeOut .3s ease forwards}

/* Loading overlay */
.loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.85);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:9998}

/* Mobile */
@media (max-width:768px){
  body{font-size:14.5px;padding-bottom:80px}
  .navbar{padding:.7rem 0}
  .brand-logo{width:38px;height:38px}
  .brand-text{font-size:1.05rem}
  .card-tile{padding:1.25rem .75rem}
  .card-tile h5{font-size:.95rem}
  .table{font-size:.85rem}
  .display-6{font-size:1.5rem}
  h3{font-size:1.35rem}
  #page-login .card{padding:1.75rem 1.25rem!important;margin-top:1.5rem!important}
  /* Bigger tap targets (Apple HIG: 44px min) */
  .btn,.form-control,.form-select,.btn-sm{min-height:44px}
  .btn-sm{font-size:.85rem;padding:.4rem .65rem}
  /* No horizontal scroll on tables */
  .table-responsive{overflow-x:auto;-webkit-overflow-scrolling:touch}
  /* Modals full-screen on mobile for easier interaction */
  .modal-dialog{margin:0;max-width:100%;height:100%}
  .modal-content{border-radius:0;min-height:100vh}
  .modal-fullscreen-on-mobile .modal-body{max-height:calc(100vh - 180px);overflow-y:auto}
  /* Calendar table cells smaller text */
  #cal-grid table{font-size:.75rem}
  #cal-grid td{height:60px!important;padding:2px!important}
  #cal-grid td .small{font-size:.6rem!important}
  /* Compact dashboard cards */
  .display-6{font-size:1.4rem!important}
  /* Group filter cards into single column */
  .row.g-2>.col-md-3,.row.g-2>.col-md-4,.row.g-2>.col-md-6{margin-bottom:.5rem}
  /* Sticky bottom action bar (for primary actions) */
  .sticky-bottom-bar{
    position:fixed;bottom:0;left:0;right:0;
    background:#fff;border-top:1px solid var(--border);
    padding:.6rem .75rem;display:flex;gap:.5rem;
    box-shadow:0 -4px 12px rgba(0,0,0,.08);z-index:1020;
  }
  .sticky-bottom-bar .btn{flex:1;min-height:48px}
  /* Hide secondary actions in compact mode */
  .mobile-hide{display:none!important}
  /* Force wrap of long content */
  .text-break-all{word-break:break-all}
  /* Bigger student avatars for tap */
  .avatar{width:44px!important;height:44px!important}
  /* Toast positioned higher for mobile */
  .toast-container{bottom:80px!important;top:auto!important}
}

/* Tablet */
@media (max-width:1024px) and (min-width:769px){
  .btn,.form-control,.form-select{min-height:40px}
  #cal-grid td{height:75px}
}

/* Page enter animation */
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
[id^="page-"]:not(.d-none){animation:pageIn .3s cubic-bezier(.4,0,.2,1)}

/* Round-12 UX polish: skeleton loaders, better focus, smoother transitions */
@keyframes shimmer{0%{background-position:-200px 0}100%{background-position:calc(200px + 100%) 0}}
.skeleton{
  background:#f1f5f9;
  background-image:linear-gradient(90deg,#f1f5f9 0px,#e2e8f0 40px,#f1f5f9 80px);
  background-size:200px 100%;background-repeat:no-repeat;
  animation:shimmer 1.4s infinite linear;
  border-radius:6px;height:1.25rem;display:inline-block;width:100%;
}
.btn:focus-visible,.form-control:focus-visible,.form-select:focus-visible{
  outline:2px solid var(--primary);outline-offset:2px;
}
.card:hover{transition:box-shadow .2s ease;}
.card-tile:hover{transform:translateY(-2px);transition:transform .2s ease,box-shadow .2s ease;box-shadow:var(--shadow-lg)}

/* Better empty states */
.empty-state{text-align:center;padding:3rem 1rem;color:var(--muted)}
.empty-state .bi{font-size:3rem;color:var(--border);margin-bottom:.5rem;display:block}

/* Better error toasts */
.toast-msg.error{border-right-color:var(--danger);background:#fef2f2}
.toast-msg.warn{border-right-color:var(--warning);background:#fffbeb}
.toast-msg.success{border-right-color:var(--success);background:#f0fdf4}

/* Disabled buttons clearer */
.btn:disabled,.btn[disabled]{opacity:.55;cursor:not-allowed}

/* Smooth scrollbar */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#f1f5f9}
::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:#94a3b8}
