/* =====================================================
   DCA Institute — Global Stylesheet v2.0
   ===================================================== */
:root{--primary:#1a56db;--primary-dk:#1341b0;--accent:#06b6d4;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--dark:#0f172a;--sidebar-bg:#0f172a;--sidebar-w:260px;--body-bg:#f1f5f9;--card-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--radius:12px;--shadow:0 2px 15px rgba(0,0,0,.07);--font:'Outfit',sans-serif}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--body-bg);color:var(--text-main);font-size:15px}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dk)}
img{max-width:100%}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.3}
.fw-500{font-weight:500!important}.fw-600{font-weight:600!important}.fw-700{font-weight:700!important}.fw-800{font-weight:800!important}
.text-muted{color:var(--text-muted)!important}
code{background:#f1f5f9;padding:.1rem .35rem;border-radius:4px;color:#e11d48;font-size:.8rem}

/* Admin Layout */
.admin-wrapper{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--sidebar-bg);color:#cbd5e1;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:1050;transition:transform .3s ease;overflow-y:auto}
.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:10px}
.sidebar-header{padding:1.25rem 1.25rem 1rem;border-bottom:1px solid rgba(255,255,255,.07);flex-shrink:0}
.logo-wrap{display:flex;align-items:center;gap:.75rem}
.logo-icon{width:42px;height:42px;background:var(--primary);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;color:#fff;flex-shrink:0}
.logo-title{font-size:1rem;font-weight:700;color:#fff}.logo-sub{font-size:.7rem;color:#94a3b8}
.sidebar-body{flex:1;padding:.75rem 0}
.nav-section{padding:.6rem 1.25rem .3rem;font-size:.65rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#475569}
.sidebar .nav-link{color:#94a3b8;padding:.5rem 1.25rem;border-radius:8px;margin:1px .5rem;font-size:.875rem;font-weight:500;transition:all .2s;display:flex;align-items:center}
.sidebar .nav-link:hover{color:#fff;background:rgba(255,255,255,.07)}
.sidebar .nav-link.active{color:#fff;background:var(--primary)}
.sidebar-footer{padding:1rem 1.25rem;border-top:1px solid rgba(255,255,255,.07);flex-shrink:0}
.admin-navbar{position:sticky;top:0;z-index:1040;background:#fff;border-bottom:1px solid var(--border);height:60px;display:flex;align-items:center;padding:0 1.5rem;gap:1rem;box-shadow:0 1px 8px rgba(0,0,0,.05)}
.navbar-title{font-size:1rem;font-weight:600;flex:1;color:var(--text-main)}
.navbar-right{display:flex;align-items:center;gap:.5rem}
.sidebar-toggle{background:none;border:none;font-size:1.4rem;color:var(--text-muted);cursor:pointer;padding:.25rem}
.nav-icon-btn{position:relative;color:var(--text-muted)!important;font-size:1.1rem;padding:.4rem}
.badge-dot{position:absolute;top:2px;right:2px;background:var(--danger);color:#fff;font-size:.6rem;border-radius:50%;width:16px;height:16px;display:flex;align-items:center;justify-content:center}
.nav-user-btn{display:flex;align-items:center;gap:.5rem;color:var(--text-main)!important;font-weight:500}
.user-avatar{width:34px;height:34px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:.9rem}
.user-name{font-size:.875rem}
.main-content{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100vh}
.content-area{padding:1.5rem;flex:1}

/* Cards */
.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-header{background:transparent;border-bottom:1px solid var(--border);padding:1rem 1.25rem;font-weight:600}

/* Stat Cards */
.stat-card{border-radius:var(--radius);padding:1.25rem;color:#fff;position:relative;overflow:hidden}
.stat-card .stat-icon{position:absolute;right:1rem;top:50%;transform:translateY(-50%);font-size:3rem;opacity:.2}
.stat-card .stat-value{font-size:1.75rem;font-weight:800}
.stat-card .stat-label{font-size:.8rem;opacity:.85}
.stat-card.primary{background:linear-gradient(135deg,#1a56db,#06b6d4)}
.stat-card.success{background:linear-gradient(135deg,#10b981,#059669)}
.stat-card.warning{background:linear-gradient(135deg,#f59e0b,#d97706)}
.stat-card.danger{background:linear-gradient(135deg,#ef4444,#dc2626)}
.stat-card.info{background:linear-gradient(135deg,#8b5cf6,#7c3aed)}
.stat-card.dark{background:linear-gradient(135deg,#374151,#111827)}

/* Tables */
.table{font-size:.875rem}
.table thead th{background:#f8fafc;font-weight:600;font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);border-bottom:2px solid var(--border)}
.table td{vertical-align:middle}
.table-hover tbody tr:hover{background:#f8fafc}

/* Buttons */
.btn{font-weight:500;border-radius:8px}
.btn-primary{background:var(--primary);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dk);border-color:var(--primary-dk)}
.btn-sm{font-size:.8rem;padding:.3rem .75rem}
.btn-xs{font-size:.7rem;padding:.2rem .5rem;border-radius:6px;display:inline-flex;align-items:center;gap:.2rem}

/* Forms */
.form-control,.form-select{border-radius:8px;border:1.5px solid var(--border);font-size:.875rem;padding:.5rem .75rem}
.form-control:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(26,86,219,.12)}
.form-label{font-weight:500;font-size:.85rem;margin-bottom:.35rem}
.alert{border-radius:var(--radius);font-size:.875rem}

/* Page Title */
.page-title{font-size:1.4rem;font-weight:700;margin-bottom:1.25rem}
.page-title small{font-size:.75rem;font-weight:400;color:var(--text-muted);display:block}

/* Avatar */
.avatar-circle{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;flex-shrink:0}
.avatar-lg{width:80px;height:80px;font-size:1.5rem}
.badge{font-size:.7rem;font-weight:600}

/* Login */
.login-wrapper{min-height:100vh;background:linear-gradient(135deg,#0f172a 0%,#1e3a5f 50%,#0f172a 100%);display:flex;align-items:center;justify-content:center}
.login-card{background:#fff;border-radius:20px;padding:2.5rem;width:100%;max-width:430px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.login-logo{width:64px;height:64px;background:var(--primary);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.75rem;color:#fff;margin:0 auto 1.25rem}

/* Frontend Navbar */
.front-navbar{background:rgba(15,23,42,.95);backdrop-filter:blur(8px)}
.front-navbar .navbar-brand{font-weight:800;font-size:1.2rem;color:#fff!important}
.front-navbar .nav-link{color:rgba(255,255,255,.8)!important;font-weight:500}
.front-navbar .nav-link:hover,.front-navbar .nav-link.active{color:#fff!important}

/* Hero */
.hero{background:linear-gradient(135deg,#0f172a 0%,#1a56db 60%,#06b6d4 100%);color:#fff;padding:5rem 0 4rem;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23fff' fill-opacity='.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E")}
.hero-content{position:relative;z-index:2}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800}
.hero p.lead{opacity:.85;font-size:1.1rem}

/* Course Cards */
.course-card{border-radius:var(--radius);border:1px solid var(--border);transition:transform .2s,box-shadow .2s;overflow:hidden;background:#fff}
.course-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.12)}
.course-card .course-head{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:1.25rem;text-align:center}
.course-card .course-icon{font-size:2.5rem}
.course-card .course-body{padding:1.25rem}

/* Footer */
.front-footer{background:var(--dark);color:#94a3b8;padding:3rem 0 1.5rem}
.front-footer h5{color:#fff;font-weight:700}
.front-footer a{color:#94a3b8}
.front-footer a:hover{color:#fff}

/* Misc */
.progress{height:8px;border-radius:10px}
.notif-dropdown{min-width:280px}
.section-divider{border:none;border-top:2px solid var(--border);margin:1.5rem 0}
.search-bar{max-width:280px}
.table-responsive{border-radius:var(--radius);overflow:hidden}
.action-btns{white-space:nowrap}
.chart-container{position:relative;height:250px}

/* Responsive */
@media(max-width:991.98px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main-content{margin-left:0}
  .sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:1049}
  .sidebar-overlay.active{display:block}
}
@media print{
  .sidebar,.admin-navbar,.btn,.no-print{display:none!important}
  .main-content{margin:0!important}
}