/* ============================================================
   منصّة إنجازك التعليمية — نظام تصميم لوحة التحكم الفاخرة
   Shared premium admin design system (dark "glow" theme)
   يعيد تنسيق مكوّنات Bootstrap القياسية فقط — لا يغيّر أي منطق.
   ============================================================ */

:root{
  --bg-deep:        #0a0f1e;
  --bg-page:        #0a0f1e;
  --bg-card:        #0f1628;
  --bg-card2:       #131d35;
  --bg-elevated:    #17213a;
  --sidebar-bg:     #0b1122;
  --topbar-bg:      rgba(15,22,40,.86);

  --accent-blue:    #2563eb;
  --accent-cyan:    #06b6d4;
  --accent-gold:    #f59e0b;
  --accent-green:   #10b981;
  --accent-pink:    #ec4899;
  --accent-purple:  #8b5cf6;
  --accent-red:     #ef4444;

  --brand-grad: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);

  --text-primary:   #f0f4ff;
  --text-secondary: #c3cde3;
  --text-muted:     #6b7fa3;
  --border:         rgba(255,255,255,.07);
  --border-soft:    rgba(255,255,255,.04);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --shadow-card: 0 10px 30px rgba(0,0,0,.35);

  --sidebar-w: 272px;
  --sidebar-w-collapsed: 84px;
  --topbar-h: 68px;
}

:root[data-admin-theme="light"]{
  --bg-deep:      #eef1f8;
  --bg-page:      #eef1f8;
  --bg-card:      #ffffff;
  --bg-card2:     #f6f8fc;
  --bg-elevated:  #ffffff;
  --sidebar-bg:   #101a33;
  --topbar-bg:    rgba(255,255,255,.9);
  --text-primary: #131a2c;
  --text-secondary:#3c465e;
  --text-muted:   #7783a0;
  --border:       rgba(16,26,51,.09);
  --border-soft:  rgba(16,26,51,.05);
  --shadow-card:  0 10px 26px rgba(20,30,60,.08);
}

*{ box-sizing:border-box; }

html{ overflow-x:hidden; }

body.admin-body{
  background: var(--bg-page);
  color: var(--text-primary);
  font-family:'Cairo','Tajawal',sans-serif;
  min-height:100vh;
  max-width:100vw;
  overflow-x:hidden;
  position:relative;
}

/* حماية عامة من انفلات العناصر أفقياً على الجوال (واجهات فقط) */
img, video, iframe, canvas, svg{ max-width:100%; height:auto; }
table{ max-width:100%; }
pre, code{ white-space:pre-wrap; word-break:break-word; }

.table-responsive{
  width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}

body.admin-body::before{
  content:'';
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background:
    radial-gradient(ellipse 70% 40% at 10% 5%,  rgba(37,99,235,.14) 0%, transparent 55%),
    radial-gradient(ellipse 55% 35% at 90% 85%, rgba(6,182,212,.10) 0%, transparent 55%),
    radial-gradient(ellipse 40% 30% at 50% 45%, rgba(139,92,246,.06) 0%, transparent 55%);
}
:root[data-admin-theme="light"] body.admin-body::before{ opacity:.5; }

body.admin-body::after{
  content:'';
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.014) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.014) 1px, transparent 1px);
  background-size:40px 40px;
}

a{ text-decoration:none; }
::-webkit-scrollbar{ width:6px; height:6px; }
::-webkit-scrollbar-track{ background:var(--bg-deep); }
::-webkit-scrollbar-thumb{ background:rgba(255,255,255,.12); border-radius:4px; }

/* ================= SIDEBAR ================= */
.admin-sidebar{
  position:fixed; inset-inline-start:0; top:0; bottom:0;
  width:var(--sidebar-w);
  background:var(--sidebar-bg);
  border-inline-end:1px solid var(--border);
  z-index:1030;
  display:flex; flex-direction:column;
  transition:width .25s ease;
  overflow:hidden;
}
body.admin-sidebar-collapsed .admin-sidebar{ width:var(--sidebar-w-collapsed); }

.admin-sidebar-brand{
  display:flex; align-items:center; gap:.7rem;
  padding:1.25rem 1.15rem;
  border-bottom:1px solid var(--border);
  flex-shrink:0;
  white-space:nowrap;
}
.admin-sidebar-brand .logo-badge{
  width:42px; height:42px; border-radius:12px;
  background:var(--brand-grad);
  display:flex; align-items:center; justify-content:center;
  font-size:1.25rem; color:#fff; flex-shrink:0;
  box-shadow:0 6px 16px rgba(37,99,235,.35);
}
.admin-sidebar-brand .brand-text{ overflow:hidden; }
.admin-sidebar-brand .brand-title{
  font-family:'Tajawal',sans-serif; font-weight:800; font-size:1rem;
  background:linear-gradient(135deg,#fff 0%,var(--accent-cyan) 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.admin-sidebar-brand .brand-sub{ font-size:.7rem; color:var(--text-muted); }
body.admin-sidebar-collapsed .admin-sidebar-brand .brand-text{ display:none; }

.admin-sidebar-nav{ flex:1; overflow-y:auto; padding:.9rem .7rem 1.5rem; }
.nav-group{ margin-bottom:1.1rem; }
.nav-group-title{
  font-size:.68rem; font-weight:700; letter-spacing:1.5px;
  color:var(--text-muted); text-transform:uppercase;
  padding:0 .6rem; margin-bottom:.45rem; white-space:nowrap;
}
body.admin-sidebar-collapsed .nav-group-title{ display:none; }

.nav-item{
  display:flex; align-items:center; gap:.7rem;
  padding:.62rem .7rem; margin-bottom:.15rem;
  border-radius:10px; color:var(--text-secondary);
  font-size:.87rem; font-weight:600; white-space:nowrap;
  transition:background .15s, color .15s;
}
.nav-item i{ font-size:1.05rem; width:22px; text-align:center; flex-shrink:0; color:var(--text-muted); transition:color .15s; }
.nav-item:hover{ background:rgba(255,255,255,.05); color:var(--text-primary); }
.nav-item:hover i{ color:var(--accent-cyan); }
.nav-item.active{ background:linear-gradient(90deg, rgba(37,99,235,.18), rgba(6,182,212,.08)); color:#fff; box-shadow:inset 0 0 0 1px rgba(37,99,235,.25); }
.nav-item.active i{ color:var(--accent-cyan); }
.nav-item .nav-label{ overflow:hidden; text-overflow:ellipsis; }
body.admin-sidebar-collapsed .nav-item .nav-label{ display:none; }
body.admin-sidebar-collapsed .nav-item{ justify-content:center; }

.admin-sidebar-foot{
  padding:.9rem 1rem; border-top:1px solid var(--border); flex-shrink:0;
}
.sidebar-collapse-btn{
  width:100%; display:flex; align-items:center; justify-content:center; gap:.5rem;
  background:rgba(255,255,255,.04); border:1px solid var(--border);
  color:var(--text-muted); border-radius:10px; padding:.5rem; cursor:pointer;
  font-size:.8rem; transition:all .15s;
}
.sidebar-collapse-btn:hover{ color:var(--text-primary); background:rgba(255,255,255,.08); }

/* ================= TOPBAR ================= */
.admin-topbar{
  position:sticky; top:0; z-index:1020;
  height:var(--topbar-h);
  margin-inline-start:var(--sidebar-w);
  background:var(--topbar-bg);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 1.5rem;
  transition:margin-inline-start .25s ease;
}
body.admin-sidebar-collapsed .admin-topbar{ margin-inline-start:var(--sidebar-w-collapsed); }

.topbar-left{ display:flex; align-items:center; gap:1rem; }
.topbar-toggle-mobile{ display:none; background:none; border:none; color:var(--text-primary); font-size:1.3rem; cursor:pointer; }
.topbar-title{ font-family:'Tajawal',sans-serif; font-weight:800; font-size:1.05rem; }
.topbar-right{ display:flex; align-items:center; gap:.7rem; }

.topbar-icon-btn{
  width:38px; height:38px; border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  background:rgba(255,255,255,.05); border:1px solid var(--border);
  color:var(--text-secondary); cursor:pointer; font-size:1rem;
  transition:all .15s;
}
.topbar-icon-btn:hover{ background:rgba(255,255,255,.1); color:#fff; }

.topbar-user{
  display:flex; align-items:center; gap:.6rem;
  padding:.3rem .8rem .3rem .4rem;
  border-radius:50px; background:rgba(255,255,255,.05); border:1px solid var(--border);
}
.topbar-user .avatar{
  width:32px; height:32px; border-radius:50%;
  background:var(--brand-grad); color:#fff;
  display:flex; align-items:center; justify-content:center; font-weight:700; font-size:.8rem;
}
.topbar-user .u-name{ font-size:.82rem; font-weight:700; }

/* ================= MAIN CONTENT ================= */
.admin-main{
  margin-inline-start:var(--sidebar-w);
  position:relative; z-index:1;
  min-height:calc(100vh - var(--topbar-h));
  padding:1.75rem;
  transition:margin-inline-start .25s ease;
}
body.admin-sidebar-collapsed .admin-main{ margin-inline-start:var(--sidebar-w-collapsed); }

@media (max-width: 991px){
  .admin-sidebar{ inset-inline-start:calc(-1 * var(--sidebar-w)); box-shadow:0 0 40px rgba(0,0,0,.4); }
  body.admin-sidebar-mobile-open .admin-sidebar{ inset-inline-start:0; }
  .admin-topbar, .admin-main{ margin-inline-start:0 !important; }
  .topbar-toggle-mobile{ display:flex; align-items:center; }
  .admin-sidebar-backdrop{
    display:none; position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:1025;
  }
  body.admin-sidebar-mobile-open .admin-sidebar-backdrop{ display:block; }

  .admin-main{ padding:1.1rem; }
  .admin-topbar{ padding:0 .9rem; }
}

@media (max-width: 768px){
  :root{ --topbar-h:60px; }
  .admin-main{ padding:.85rem; }
  .topbar-title{ font-size:.92rem; }
  .topbar-right{ gap:.4rem; }
  .topbar-user .u-name{ display:none; }
  .topbar-user{ padding:.3rem; }
  .topbar-icon-btn{ width:34px; height:34px; font-size:.9rem; }

  .page-heading h1{ font-size:1.15rem; }
  .page-heading p{ font-size:.78rem; }

  .stat-card{ padding:.9rem 1rem; gap:.75rem; }
  .stat-card .stat-icon{ width:42px; height:42px; font-size:1.1rem; }
  .stat-card .stat-value{ font-size:1.25rem; }

  .quick-card{ padding:.85rem .6rem; }
  .quick-card .qc-icon{ width:38px; height:38px; font-size:1rem; }
  .quick-card .qc-label{ font-size:.72rem; }

  .section-panel{ padding:1rem; }

  /* لا تدَع أي جدول يكسر عرض الصفحة على الجوال */
  .table{ font-size:.82rem; }

  /* محرر Summernote يجب أن يبقى ضمن عرض الشاشة داخل أي نموذج أو مودال */
  .note-editor.note-frame, .note-editor.note-airframe{ width:100% !important; max-width:100% !important; }
  .modal-dialog{ margin:.6rem; max-width:calc(100% - 1.2rem); }
}

@media (max-width: 420px){
  .stats-row{ grid-template-columns:1fr !important; }
  .quick-links{ grid-template-columns:repeat(2, 1fr) !important; }
  .row.g-3 > [class*="col-"]{ min-width:0; }
}

/* ================= BOOTSTRAP OVERRIDES ================= */
.card{
  background:var(--bg-card) !important;
  border:1px solid var(--border) !important;
  border-radius:var(--radius-md) !important;
  color:var(--text-primary);
  box-shadow:var(--shadow-card);
}
.card-header{
  background:var(--bg-card2) !important;
  border-bottom:1px solid var(--border) !important;
  color:var(--text-primary) !important;
  font-weight:700; font-family:'Tajawal',sans-serif;
  border-radius:var(--radius-md) var(--radius-md) 0 0 !important;
}
.card-header.bg-primary, .card-header.bg-success, .card-header.bg-danger,
.card-header.bg-warning, .card-header.bg-info, .card-header.bg-dark, .card-header.bg-light{
  background:var(--bg-card2) !important; color:var(--text-primary) !important;
  border-bottom:2px solid var(--accent-blue) !important;
}
.table{ color:var(--text-primary); }
.table > :not(caption) > * > *{ background:transparent; color:var(--text-primary); border-color:var(--border); }
.table thead th{ color:var(--text-muted); font-weight:700; font-size:.78rem; text-transform:uppercase; letter-spacing:.5px; border-bottom:2px solid var(--border) !important; }
.table-hover > tbody > tr:hover > *{ background:rgba(255,255,255,.04); }
.table-striped > tbody > tr:nth-of-type(odd) > *{ background:rgba(255,255,255,.02); }

.form-control, .form-select{
  background:var(--bg-deep) !important; border:1px solid var(--border) !important;
  color:var(--text-primary) !important; border-radius:10px !important;
}
.form-control:focus, .form-select:focus{
  border-color:var(--accent-blue) !important; box-shadow:0 0 0 3px rgba(37,99,235,.15) !important;
  background:var(--bg-deep) !important; color:var(--text-primary) !important;
}
.form-control::placeholder{ color:var(--text-muted); }
.form-label{ color:var(--text-secondary); font-weight:600; font-size:.85rem; }
.form-select option{ background:var(--bg-card); color:var(--text-primary); }

.btn{ border-radius:10px !important; font-weight:700; }
.btn-primary{ background:var(--brand-grad) !important; border:none !important; }
.btn-success{ background:linear-gradient(135deg, var(--accent-green), #059669) !important; border:none !important; }
.btn-danger{ background:linear-gradient(135deg, var(--accent-red), #b91c1c) !important; border:none !important; }
.btn-warning{ background:linear-gradient(135deg, var(--accent-gold), #b45309) !important; border:none !important; color:#fff !important; }
.btn-info{ background:linear-gradient(135deg, var(--accent-cyan), #0e7490) !important; border:none !important; color:#fff !important; }
.btn-outline-primary{ color:var(--accent-blue) !important; border-color:var(--accent-blue) !important; }
.btn-outline-secondary{ color:var(--text-secondary) !important; border-color:var(--border) !important; }

.badge.bg-primary{ background:color-mix(in srgb, var(--accent-blue) 25%, transparent) !important; color:#93b4ff !important; }
.badge.bg-success{ background:color-mix(in srgb, var(--accent-green) 25%, transparent) !important; color:#6ee7b7 !important; }
.badge.bg-danger{ background:color-mix(in srgb, var(--accent-red) 25%, transparent) !important; color:#fca5a5 !important; }
.badge.bg-warning{ background:color-mix(in srgb, var(--accent-gold) 25%, transparent) !important; color:#fcd34d !important; }
.badge.bg-info{ background:color-mix(in srgb, var(--accent-cyan) 25%, transparent) !important; color:#67e8f9 !important; }
.badge.bg-secondary{ background:rgba(255,255,255,.08) !important; color:var(--text-secondary) !important; }

.alert{ border-radius:12px !important; border:1px solid var(--border) !important; }
.alert-success{ background:color-mix(in srgb, var(--accent-green) 14%, var(--bg-card)) !important; color:#6ee7b7 !important; }
.alert-danger{ background:color-mix(in srgb, var(--accent-red) 14%, var(--bg-card)) !important; color:#fca5a5 !important; }
.alert-info{ background:color-mix(in srgb, var(--accent-cyan) 14%, var(--bg-card)) !important; color:#67e8f9 !important; }
.alert-warning{ background:color-mix(in srgb, var(--accent-gold) 14%, var(--bg-card)) !important; color:#fcd34d !important; }

.modal-content{ background:var(--bg-card) !important; border:1px solid var(--border) !important; color:var(--text-primary); }
.modal-header, .modal-footer{ border-color:var(--border) !important; }
.list-group-item{ background:var(--bg-card) !important; border-color:var(--border) !important; color:var(--text-primary) !important; }
.pagination .page-link{ background:var(--bg-card) !important; border-color:var(--border) !important; color:var(--text-secondary) !important; }
.pagination .page-item.active .page-link{ background:var(--brand-grad) !important; border-color:transparent !important; }

/* ================= STAT / QUICK CARDS ================= */
.stat-card{
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:1.15rem 1.3rem; display:flex; align-items:center; gap:1rem;
  box-shadow:var(--shadow-card); height:100%;
}
.stat-card .stat-icon{
  width:52px; height:52px; border-radius:14px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center; font-size:1.35rem; color:#fff;
  background:var(--icon-bg, var(--brand-grad));
}
.stat-card .stat-value{ font-family:'Tajawal',sans-serif; font-weight:800; font-size:1.55rem; line-height:1.15; }
.stat-card .stat-label{ font-size:.78rem; color:var(--text-muted); margin-top:.15rem; }

.quick-card{
  background:var(--bg-card); border:1px solid var(--border); border-radius:14px;
  padding:1.1rem .9rem; text-align:center; display:flex; flex-direction:column; align-items:center; gap:.55rem;
  color:var(--text-secondary); transition:transform .15s, border-color .15s, box-shadow .15s;
}
.quick-card:hover{ transform:translateY(-3px); border-color:color-mix(in srgb, var(--qc-color,var(--accent-blue)) 45%, var(--border)); box-shadow:0 10px 24px rgba(0,0,0,.3); color:var(--text-primary); }
.quick-card .qc-icon{
  width:46px; height:46px; border-radius:12px;
  display:flex; align-items:center; justify-content:center; font-size:1.2rem;
  background:color-mix(in srgb, var(--qc-color,var(--accent-blue)) 18%, transparent);
  color:var(--qc-color,var(--accent-blue));
}
.quick-card .qc-label{ font-size:.8rem; font-weight:700; }

/* ================= MEDIA LIBRARY ================= */
.media-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(180px,1fr)); gap:1rem; }
.media-item{
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-md);
  overflow:hidden; box-shadow:var(--shadow-card); display:flex; flex-direction:column;
}
.media-thumb{
  aspect-ratio:1/1; background:var(--bg-card2); display:flex; align-items:center; justify-content:center;
  overflow:hidden; position:relative;
}
.media-thumb img, .media-thumb video{ width:100%; height:100%; object-fit:cover; }
.media-thumb .media-type-icon{ font-size:2.4rem; color:var(--text-muted); }
.media-item .media-meta{ padding:.65rem .8rem; }
.media-item .media-name{ font-size:.78rem; font-weight:700; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.media-item .media-sub{ font-size:.7rem; color:var(--text-muted); margin-top:.15rem; }
.media-item .media-actions{ display:flex; gap:.4rem; padding:0 .8rem .8rem; }
.media-item .media-actions .btn{ flex:1; padding:.35rem; font-size:.75rem; }

/* ================= MISC ================= */
.page-heading{ margin-bottom:1.5rem; }
.page-heading h1{ font-family:'Tajawal',sans-serif; font-weight:800; font-size:1.4rem; margin:0; }
.page-heading p{ color:var(--text-muted); font-size:.85rem; margin:.25rem 0 0; }

.section-panel{
  background:var(--bg-card); border:1px solid var(--border); border-radius:var(--radius-md);
  padding:1.4rem; box-shadow:var(--shadow-card);
}

.fade-up{ animation:adminFadeUp .5s ease both; }
@keyframes adminFadeUp{ from{opacity:0; transform:translateY(12px);} to{opacity:1; transform:translateY(0);} }