/* ============================================================
   DREXORA SCHOOL PORTAL — Main Stylesheet
   Color Scheme: Blue, White, Gold
   ============================================================ */

/* ---------- CSS Variables / Theming ---------- */
:root {
  /* Primary Palette */
  --blue-50:  #e3f2fd;
  --blue-100: #bbdefb;
  --blue-200: #90caf9;
  --blue-300: #64b5f6;
  --blue-400: #42a5f5;
  --blue-500: #2196f3;
  --blue-600: #1e88e5;
  --blue-700: #1976d2;
  --blue-800: #1565c0;
  --blue-900: #0d47a1;

  --gold-300: #ffe082;
  --gold-400: #ffd54f;
  --gold-500: #ffca28;
  --gold-600: #ffb300;
  --gold-700: #f9a825;
  --gold-800: #f57f17;

  /* Semantic tokens (light mode) */
  --primary:        #1565c0;
  --primary-light:  #1976d2;
  --primary-dark:   #0d47a1;
  --secondary:      #f9a825;
  --secondary-dark: #f57f17;

  --bg:         #f0f4f8;
  --surface:    #ffffff;
  --surface-2:  #f8fafc;
  --border:     #e2e8f0;
  --text:       #1a202c;
  --text-muted: #718096;
  --text-inv:   #ffffff;

  --success: #16a34a;
  --warning: #d97706;
  --danger:  #dc2626;
  --info:    #0284c7;

  --sidebar-width: 260px;
  --sidebar-bg:    #0d2b6e;
  --sidebar-text:  #cbd5e1;
  --sidebar-active:#f9a825;
  --topbar-h:      64px;

  --radius:   12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow:   0 4px 20px rgba(0,0,0,.08);
  --shadow-md:0 8px 30px rgba(0,0,0,.12);
  --shadow-lg:0 20px 60px rgba(0,0,0,.15);

  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --bg:         #0f172a;
  --surface:    #1e293b;
  --surface-2:  #0f172a;
  --border:     #334155;
  --text:       #f1f5f9;
  --text-muted: #94a3b8;
  --text-inv:   #ffffff;
  --shadow:   0 4px 20px rgba(0,0,0,.35);
  --shadow-md:0 8px 30px rgba(0,0,0,.45);
  --sidebar-bg: #020c22;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Segoe UI',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  transition:background var(--transition),color var(--transition);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button,input,select,textarea{font-family:inherit}
ul{list-style:none}

/* ---------- Typography ---------- */
h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2}
h2{font-size:clamp(1.4rem,3vw,2rem);font-weight:700}
h3{font-size:clamp(1.1rem,2.5vw,1.4rem);font-weight:600}
h4{font-size:1.1rem;font-weight:600}
p{color:var(--text-muted)}

/* ---------- Layout ---------- */
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}
.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.5rem}
.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.25rem}
.flex{display:flex}
.flex-center{display:flex;align-items:center;justify-content:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.flex-col{display:flex;flex-direction:column}
.gap-1{gap:.5rem}.gap-2{gap:1rem}.gap-3{gap:1.5rem}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.65rem 1.4rem;border-radius:var(--radius-sm);
  font-size:.9rem;font-weight:600;border:none;cursor:pointer;
  transition:all var(--transition);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 20px rgba(21,101,192,.35)}
.btn-secondary{background:var(--secondary);color:#1a202c}
.btn-secondary:hover{background:var(--secondary-dark);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{background:#b91c1c}
.btn-success{background:var(--success);color:#fff}
.btn-success:hover{background:#15803d}
.btn-ghost{background:transparent;color:var(--text-muted)}
.btn-ghost:hover{background:var(--border);color:var(--text)}
.btn-sm{padding:.4rem .9rem;font-size:.8rem}
.btn-lg{padding:.85rem 2rem;font-size:1rem}
.btn-block{width:100%;justify-content:center}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important}
.btn-icon{padding:.5rem;border-radius:50%;aspect-ratio:1}

/* ---------- Form Elements ---------- */
.form-group{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1.2rem}
.form-label{font-size:.85rem;font-weight:600;color:var(--text)}
.form-control{
  width:100%;padding:.7rem 1rem;border-radius:var(--radius-sm);
  border:1.5px solid var(--border);background:var(--surface);
  color:var(--text);font-size:.9rem;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.15)}
.form-control::placeholder{color:var(--text-muted)}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23718096' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;background-size:1.2rem;padding-right:2.5rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-hint{font-size:.78rem;color:var(--text-muted)}
.input-group{position:relative}
.input-group .form-control{padding-left:2.8rem}
.input-group .input-icon{position:absolute;left:.9rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1rem;pointer-events:none}
.input-group .toggle-pass{position:absolute;right:.9rem;top:50%;transform:translateY(-50%);color:var(--text-muted);cursor:pointer;background:none;border:none;padding:.25rem;display:flex}

/* ---------- Cards ---------- */
.card{
  background:var(--surface);border-radius:var(--radius);
  padding:1.5rem;box-shadow:var(--shadow);
  border:1px solid var(--border);
  transition:box-shadow var(--transition),transform var(--transition);
}
.card:hover{box-shadow:var(--shadow-md)}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.25rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}
.card-title{font-size:1rem;font-weight:700;color:var(--text)}
.card-body{color:var(--text-muted)}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;padding:.2rem .65rem;border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.03em}
.badge-primary{background:var(--blue-50);color:var(--primary)}
.badge-gold{background:#fef3c7;color:#92400e}
.badge-success{background:#dcfce7;color:#166534}
.badge-danger{background:#fee2e2;color:#991b1b}
.badge-warning{background:#fef9c3;color:#854d0e}
[data-theme="dark"] .badge-primary{background:rgba(21,101,192,.2);color:#90caf9}
[data-theme="dark"] .badge-gold{background:rgba(249,168,37,.15);color:#fcd34d}
[data-theme="dark"] .badge-success{background:rgba(22,163,74,.2);color:#86efac}
[data-theme="dark"] .badge-danger{background:rgba(220,38,38,.2);color:#fca5a5}

/* ---------- Tables ---------- */
.table-wrapper{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--border)}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:.8rem 1rem;text-align:left;font-size:.85rem;border-bottom:1px solid var(--border)}
.table th{background:var(--surface-2);font-weight:700;color:var(--text);letter-spacing:.03em;text-transform:uppercase;font-size:.75rem}
.table tbody tr:last-child td{border-bottom:none}
.table tbody tr:hover{background:var(--bg)}
.table tbody tr{transition:background var(--transition)}

/* ---------- Avatar ---------- */
.avatar{
  width:100px;height:100px;border-radius:50%;
  object-fit:cover;border:3px solid var(--primary);
  background:var(--blue-50);
}
.avatar-sm{width:40px;height:40px;border-width:2px}
.avatar-lg{width:140px;height:140px;border-width:4px}
.avatar-placeholder{
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;font-weight:700;font-size:1.4rem;
}

/* ---------- Loading Spinner ---------- */
.spinner-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.45);
  display:flex;align-items:center;justify-content:center;
  z-index:9999;opacity:0;pointer-events:none;
  transition:opacity .2s;
}
.spinner-overlay.active{opacity:1;pointer-events:all}
.spinner{
  width:52px;height:52px;border-radius:50%;
  border:5px solid rgba(255,255,255,.15);
  border-top-color:var(--secondary);
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Toast Notifications ---------- */
#toast-container{
  position:fixed;bottom:1.5rem;right:1.5rem;
  z-index:10000;display:flex;flex-direction:column;gap:.75rem;
}
.toast{
  display:flex;align-items:center;gap:.75rem;
  padding:.9rem 1.25rem;border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text);
  box-shadow:var(--shadow-md);border:1px solid var(--border);
  font-size:.88rem;font-weight:500;min-width:280px;max-width:380px;
  transform:translateX(120%);transition:transform .3s cubic-bezier(.175,.885,.32,1.275);
}
.toast.show{transform:translateX(0)}
.toast-icon{font-size:1.1rem;flex-shrink:0}
.toast-success{border-left:4px solid var(--success)}.toast-success .toast-icon{color:var(--success)}
.toast-error{border-left:4px solid var(--danger)}.toast-error .toast-icon{color:var(--danger)}
.toast-info{border-left:4px solid var(--info)}.toast-info .toast-icon{color:var(--info)}
.toast-warning{border-left:4px solid var(--warning)}.toast-warning .toast-icon{color:var(--warning)}
.toast-close{margin-left:auto;cursor:pointer;background:none;border:none;color:var(--text-muted);font-size:1rem;padding:0;display:flex;line-height:1}
.toast-close:hover{color:var(--text)}

/* ---------- Modal ---------- */
.modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.55);
  display:flex;align-items:center;justify-content:center;
  z-index:5000;opacity:0;pointer-events:none;
  transition:opacity .25s;padding:1rem;
}
.modal-overlay.active{opacity:1;pointer-events:all}
.modal{
  background:var(--surface);border-radius:var(--radius-lg);
  padding:2rem;width:100%;max-width:540px;
  box-shadow:var(--shadow-lg);
  transform:scale(.95) translateY(10px);
  transition:transform .25s;
}
.modal-overlay.active .modal{transform:scale(1) translateY(0)}
.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}
.modal-title{font-size:1.15rem;font-weight:700}
.modal-close{background:none;border:none;font-size:1.2rem;cursor:pointer;color:var(--text-muted);padding:.25rem;border-radius:var(--radius-sm)}
.modal-close:hover{background:var(--border);color:var(--text)}
.modal-footer{display:flex;justify-content:flex-end;gap:.75rem;margin-top:1.5rem;padding-top:1rem;border-top:1px solid var(--border)}

/* ---------- Dashboard Layout ---------- */
.portal-layout{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{
  width:var(--sidebar-width);min-width:var(--sidebar-width);
  background:var(--sidebar-bg);
  display:flex;flex-direction:column;
  position:fixed;top:0;left:0;height:100vh;
  z-index:200;
  transform:translateX(0);
  transition:transform var(--transition);
}
.sidebar.collapsed{transform:translateX(-100%)}
.sidebar-brand{
  padding:1.5rem;border-bottom:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;gap:.75rem;
}
.sidebar-logo{
  width:42px;height:42px;background:var(--secondary);
  border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;
  font-weight:900;font-size:1.2rem;color:#0d2b6e;flex-shrink:0;
}
.sidebar-brand-text{color:#fff}
.sidebar-brand-name{font-size:1rem;font-weight:800;letter-spacing:-.01em}
.sidebar-brand-tagline{font-size:.68rem;color:rgba(255,255,255,.5);margin-top:.1rem}

.sidebar-nav{flex:1;padding:1rem 0;overflow-y:auto}
.nav-section-label{
  font-size:.65rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:rgba(255,255,255,.3);
  padding:.75rem 1.25rem .25rem;
}
.nav-link{
  display:flex;align-items:center;gap:.75rem;
  padding:.72rem 1.25rem;margin:.1rem .5rem;border-radius:var(--radius-sm);
  color:var(--sidebar-text);font-size:.88rem;font-weight:500;
  transition:all var(--transition);cursor:pointer;
}
.nav-link:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-link.active{background:var(--secondary);color:#0d2b6e;font-weight:700}
.nav-link .nav-icon{font-size:1rem;width:1.2rem;flex-shrink:0}
.nav-link .nav-badge{margin-left:auto;background:var(--danger);color:#fff;border-radius:999px;font-size:.65rem;font-weight:700;padding:.1rem .4rem}

.sidebar-footer{
  padding:1rem;border-top:1px solid rgba(255,255,255,.08);
}
.user-pill{
  display:flex;align-items:center;gap:.75rem;
  padding:.75rem;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.06);cursor:pointer;
}
.user-pill:hover{background:rgba(255,255,255,.12)}
.user-pill-avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;background:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem;flex-shrink:0}
.user-pill-info{flex:1;min-width:0}
.user-pill-name{font-size:.82rem;font-weight:600;color:#fff;truncate:ellipsis;overflow:hidden;white-space:nowrap}
.user-pill-role{font-size:.7rem;color:rgba(255,255,255,.4)}
.user-pill-arrow{color:rgba(255,255,255,.3);font-size:.8rem}

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

/* Top bar */
.topbar{
  height:var(--topbar-h);background:var(--surface);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 1.75rem;position:sticky;top:0;z-index:100;
  box-shadow:0 1px 8px rgba(0,0,0,.06);
}
.topbar-left{display:flex;align-items:center;gap:1rem}
.menu-toggle{
  background:none;border:none;cursor:pointer;padding:.4rem;
  color:var(--text);border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:1.3rem;
  display:none;
}
.menu-toggle:hover{background:var(--bg)}
.topbar-title{font-size:1.05rem;font-weight:700}
.topbar-right{display:flex;align-items:center;gap:.75rem}
.topbar-btn{
  width:38px;height:38px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:none;border:none;cursor:pointer;
  color:var(--text-muted);font-size:1rem;transition:all var(--transition);
  position:relative;
}
.topbar-btn:hover{background:var(--bg);color:var(--text)}
.topbar-notif-dot{
  position:absolute;top:5px;right:5px;width:8px;height:8px;
  border-radius:50%;background:var(--danger);border:1.5px solid var(--surface);
}

/* Page content */
.page-content{padding:2rem 1.75rem;flex:1}
.page-header{margin-bottom:2rem}
.page-header h1{font-size:1.6rem;margin-bottom:.25rem}
.page-header p{font-size:.88rem;color:var(--text-muted)}

/* Sidebar overlay (mobile) */
.sidebar-overlay{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:199;
}
.sidebar-overlay.active{display:block}

/* ---------- Stat Cards ---------- */
.stat-card{
  background:var(--surface);border-radius:var(--radius);padding:1.4rem;
  border:1px solid var(--border);box-shadow:var(--shadow);
  display:flex;align-items:center;gap:1.2rem;
  transition:transform var(--transition),box-shadow var(--transition);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.stat-icon{
  width:54px;height:54px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  font-size:1.4rem;flex-shrink:0;
}
.stat-icon-blue{background:var(--blue-50);color:var(--primary)}
.stat-icon-gold{background:#fef3c7;color:#92400e}
.stat-icon-green{background:#dcfce7;color:#166534}
.stat-icon-red{background:#fee2e2;color:#991b1b}
[data-theme="dark"] .stat-icon-blue{background:rgba(21,101,192,.2);color:#90caf9}
[data-theme="dark"] .stat-icon-gold{background:rgba(249,168,37,.15);color:#fcd34d}
[data-theme="dark"] .stat-icon-green{background:rgba(22,163,74,.2);color:#86efac}
[data-theme="dark"] .stat-icon-red{background:rgba(220,38,38,.2);color:#fca5a5}
.stat-info{}
.stat-value{font-size:1.6rem;font-weight:800;line-height:1}
.stat-label{font-size:.78rem;color:var(--text-muted);margin-top:.2rem}

/* ---------- Search Bar ---------- */
.search-bar{
  display:flex;align-items:center;gap:.5rem;
  background:var(--bg);border:1.5px solid var(--border);
  border-radius:var(--radius-sm);padding:.5rem .9rem;
  transition:border-color var(--transition);
}
.search-bar:focus-within{border-color:var(--primary)}
.search-bar i{color:var(--text-muted)}
.search-bar input{background:none;border:none;outline:none;color:var(--text);font-size:.88rem;width:100%}
.search-bar input::placeholder{color:var(--text-muted)}

/* ---------- Empty State ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;
  justify-content:center;padding:4rem 2rem;text-align:center;
  color:var(--text-muted);
}
.empty-state i{font-size:3.5rem;margin-bottom:1rem;opacity:.4}
.empty-state h3{font-size:1.1rem;color:var(--text);margin-bottom:.5rem}
.empty-state p{font-size:.88rem;max-width:360px}

/* ---------- Info Row (student profile details) ---------- */
.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-top:1rem}
.info-item{
  background:var(--bg);border-radius:var(--radius-sm);padding:1rem 1.2rem;
  border:1px solid var(--border);
}
.info-item-label{font-size:.72rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.3rem}
.info-item-value{font-size:.95rem;font-weight:600;color:var(--text)}

/* ---------- Responsive Breakpoints ---------- */
@media(max-width:1024px){
  .form-row{grid-template-columns:1fr}
}
@media(max-width:768px){
  :root{--topbar-h:58px}
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main-content{margin-left:0}
  .menu-toggle{display:flex}
  .page-content{padding:1.25rem 1rem}
  .topbar{padding:0 1rem}
  .modal{max-width:calc(100vw - 2rem)}
  .form-row{grid-template-columns:1fr}
  #toast-container{left:1rem;right:1rem}
  .toast{min-width:0}
}

/* ---------- Utilities ---------- */
.text-center{text-align:center}
.text-right{text-align:right}
.text-primary{color:var(--primary)}
.text-secondary{color:var(--secondary)}
.text-success{color:var(--success)}
.text-danger{color:var(--danger)}
.text-muted{color:var(--text-muted)}
.fw-700{font-weight:700}
.fw-800{font-weight:800}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}
.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}
.w-full{width:100%}
.d-none{display:none!important}
.truncate{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.divider{border:none;border-top:1px solid var(--border);margin:1.5rem 0}
.rounded{border-radius:var(--radius)}
.rounded-full{border-radius:999px}

/* ---------- Announcement / Notification Card ---------- */
.notif-card{
  border-left:4px solid var(--primary);padding:1.1rem 1.3rem;
  background:var(--surface);border-radius:var(--radius-sm);
  box-shadow:var(--shadow);margin-bottom:1rem;
  transition:transform var(--transition);
}
.notif-card:hover{transform:translateX(3px)}
.notif-card.urgent{border-left-color:var(--danger)}
.notif-card.info{border-left-color:var(--info)}
.notif-card.general{border-left-color:var(--success)}
.notif-title{font-weight:700;font-size:.95rem;margin-bottom:.3rem}
.notif-body{font-size:.85rem;color:var(--text-muted);margin-bottom:.5rem}
.notif-meta{font-size:.75rem;color:var(--text-muted);display:flex;align-items:center;gap:1rem;flex-wrap:wrap}

/* ---------- Skeleton Loader ---------- */
.skeleton{
  background:linear-gradient(90deg,var(--border) 25%,var(--bg) 50%,var(--border) 75%);
  background-size:200% 100%;animation:shimmer 1.4s infinite;
  border-radius:var(--radius-sm);
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

/* ---------- Print Styles ---------- */
@media print{
  .sidebar,.topbar,.btn,.no-print{display:none!important}
  .main-content{margin:0!important}
  .page-content{padding:0!important}
  body{background:#fff;color:#000}
  .card,.stat-card{box-shadow:none;border:1px solid #ddd}
}