@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  --primary: #0061f2;
  --primary-dark: #0045ac;
  --primary-light: #e8f0fe;
  --dark: #0d0d1a;
  --dark2: #1e1e2e;
  --gray: #6b7280;
  --light: #f4f6fb;
  --white: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --shadow: 0 4px 24px rgba(0,97,242,0.10);
  --shadow-dark: 0 8px 32px rgba(0,0,0,0.18);
  --radius: 14px;
  --transition: all 0.25s cubic-bezier(.4,0,.2,1);
}

*{margin:0;padding:0;box-sizing:border-box;font-family:'Outfit',sans-serif;}
body{background:var(--light);color:var(--dark);overflow-x:hidden;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:6px;height:6px;}
::-webkit-scrollbar-track{background:#f0f0f0;}
::-webkit-scrollbar-thumb{background:var(--primary);border-radius:10px;}

/* ── Loader ── */
#page-loader{position:fixed;inset:0;background:var(--white);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999;transition:opacity .5s;}
#page-loader.hide{opacity:0;pointer-events:none;}
.loader-ring{width:56px;height:56px;border:5px solid var(--primary-light);border-top-color:var(--primary);border-radius:50%;animation:spin 0.9s linear infinite;}
.loader-text{margin-top:14px;font-size:.85rem;color:var(--gray);font-weight:500;letter-spacing:.05em;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ── Layout ── */
.app-wrapper{display:flex;min-height:100vh;}

/* ── Sidebar ── */
.sidebar{width:260px;background:var(--dark2);color:#fff;position:fixed;top:0;left:0;height:100vh;z-index:1000;display:flex;flex-direction:column;transition:var(--transition);overflow-y:auto;}
.sidebar-brand{padding:24px 20px;border-bottom:1px solid rgba(255,255,255,0.07);display:flex;align-items:center;gap:12px;}
.sidebar-brand img{width:42px;height:42px;border-radius:10px;object-fit:cover;}
.sidebar-brand .brand-name{font-weight:700;font-size:1rem;line-height:1.2;}
.sidebar-brand .brand-sub{font-size:.65rem;opacity:.5;text-transform:uppercase;letter-spacing:.08em;}
.sidebar-section{padding:18px 16px 6px;font-size:.6rem;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,0.3);font-weight:600;}
.nav-link{display:flex;align-items:center;gap:12px;padding:11px 20px;color:rgba(255,255,255,0.6);font-size:.875rem;font-weight:500;border-left:3px solid transparent;transition:var(--transition);}
.nav-link i{width:18px;text-align:center;font-size:.9rem;}
.nav-link:hover,.nav-link.active{background:rgba(0,97,242,0.18);color:#fff;border-left-color:var(--primary);}
.nav-link.active{color:var(--primary);}
.sidebar-footer{margin-top:auto;padding:16px 20px;border-top:1px solid rgba(255,255,255,0.07);}

/* ── Main ── */
.main-content{flex:1;margin-left:260px;transition:var(--transition);min-height:100vh;display:flex;flex-direction:column;}

/* ── Topbar ── */
.topbar{height:68px;background:var(--white);display:flex;align-items:center;justify-content:space-between;padding:0 28px;box-shadow:0 1px 0 #e5e7eb;position:sticky;top:0;z-index:900;}
.topbar-left{display:flex;align-items:center;gap:16px;}
#sidebar-toggle{background:none;border:none;font-size:1.2rem;color:var(--gray);cursor:pointer;padding:6px;border-radius:8px;transition:var(--transition);}
#sidebar-toggle:hover{background:var(--primary-light);color:var(--primary);}
.greeting-text{font-weight:600;font-size:.95rem;color:var(--dark);}
.greeting-sub{font-size:.75rem;color:var(--gray);}
.topbar-right{display:flex;align-items:center;gap:6px;}
.tool-icon-btn{background:none;border:none;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--gray);font-size:1rem;cursor:pointer;transition:var(--transition);}
.tool-icon-btn:hover{background:var(--primary-light);color:var(--primary);}
.clock-badge{background:var(--primary-light);color:var(--primary);padding:6px 12px;border-radius:20px;font-weight:600;font-size:.85rem;display:flex;align-items:center;gap:6px;}
.user-pill{display:flex;align-items:center;gap:10px;background:var(--light);padding:6px 14px 6px 6px;border-radius:30px;cursor:pointer;}
.user-pill img{width:34px;height:34px;border-radius:50%;object-fit:cover;}
.user-pill .u-name{font-weight:600;font-size:.85rem;}
.user-pill .u-role{font-size:.7rem;color:var(--gray);text-transform:capitalize;}

/* ── Page Content ── */
.page-content{padding:28px;flex:1;}
.page-header{margin-bottom:24px;}
.page-header h1{font-size:1.5rem;font-weight:700;color:var(--dark);}
.page-header p{font-size:.875rem;color:var(--gray);margin-top:2px;}
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:.78rem;color:var(--gray);margin-bottom:8px;}
.breadcrumb a{color:var(--primary);}

/* ── Cards ── */
.card{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:24px;border:1px solid #f0f0f0;}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.card-title{font-size:1rem;font-weight:700;color:var(--dark);}
.card-title small{display:block;font-size:.75rem;color:var(--gray);font-weight:400;margin-top:2px;}

/* ── Stat Cards ── */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:24px;}
.stat-card{background:var(--white);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;align-items:center;gap:18px;border:1px solid #f0f0f0;}
.stat-icon{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0;}
.stat-icon.blue{background:rgba(0,97,242,0.12);color:var(--primary);}
.stat-icon.green{background:rgba(16,185,129,0.12);color:var(--success);}
.stat-icon.orange{background:rgba(245,158,11,0.12);color:var(--warning);}
.stat-icon.red{background:rgba(239,68,68,0.12);color:var(--danger);}
.stat-icon.cyan{background:rgba(6,182,212,0.12);color:var(--info);}
.stat-value{font-size:1.6rem;font-weight:800;line-height:1;}
.stat-label{font-size:.78rem;color:var(--gray);font-weight:500;margin-top:4px;}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 20px;border-radius:9px;font-weight:600;font-size:.85rem;border:none;cursor:pointer;transition:var(--transition);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,97,242,0.35);}
.btn-success{background:var(--success);color:#fff;}
.btn-danger{background:var(--danger);color:#fff;}
.btn-warning{background:var(--warning);color:#fff;}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary);}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-sm{padding:6px 14px;font-size:.78rem;border-radius:7px;}
.btn-lg{padding:13px 28px;font-size:.95rem;border-radius:12px;}
.btn-icon{width:36px;height:36px;padding:0;border-radius:8px;justify-content:center;}

/* ──/* Tables */
.table-wrap { overflow-x: auto; margin-top: 15px; border-radius: 12px; border: 1px solid #eef2f6; }
.data-table { width: 100%; border-collapse: collapse; min-width: 600px; }
.data-table th { background: #f8fafc; padding: 14px 16px; text-align: left; font-size: .8rem; font-weight: 700; color: #64748b; text-transform: uppercase; letter-spacing: .05em; border-bottom: 2px solid #eef2f6; }
.data-table td { padding: 16px; border-bottom: 1px solid #f1f5f9; font-size: .875rem; color: #1e293b; vertical-align: middle; transition: .2s; }
.data-table tr:hover td { background: #f8faff; }
.data-table tr:last-child td { border-bottom: none; }

/* Analog Clock */
.analog-clock { width: 50px; height: 50px; border-radius: 50%; border: 2px solid #fff; position: relative; background: rgba(255,255,255,0.1); margin-right: 15px; }
.clock-hand { position: absolute; bottom: 50%; left: 50%; transform-origin: bottom; background: #fff; border-radius: 5px; }
.hand-h { width: 3px; height: 12px; }
.hand-m { width: 2px; height: 18px; }
.hand-s { width: 1px; height: 20px; background: #fbbf24; }
.clock-center { width: 4px; height: 4px; border-radius: 50%; background: #fff; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); }
table.data-table tbody tr:hover{background:#fafbff;}
table.data-table tbody tr:last-child td{border-bottom:none;}

/* ── Forms ── */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;}
.form-group{display:flex;flex-direction:column;gap:6px;}
.form-group label{font-size:.82rem;font-weight:600;color:var(--dark);}
.form-control{width:100%;padding:10px 14px;border:1.5px solid #e5e7eb;border-radius:9px;font-size:.875rem;outline:none;transition:var(--transition);background:#fff;}
.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,97,242,0.12);}
select.form-control{cursor:pointer;}
textarea.form-control{resize:vertical;min-height:90px;}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:20px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;}
.badge-primary{background:var(--primary-light);color:var(--primary);}
.badge-success{background:rgba(16,185,129,0.12);color:var(--success);}
.badge-danger{background:rgba(239,68,68,0.12);color:var(--danger);}
.badge-warning{background:rgba(245,158,11,0.12);color:var(--warning);}
.badge-gray{background:#f3f4f6;color:var(--gray);}

/* ── Modal Overlay ── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.45);backdrop-filter:blur(3px);display:none;align-items:center;justify-content:center;z-index:2000;padding:20px;}
.modal-overlay.open{display:flex;}
.modal-box{background:var(--white);border-radius:18px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-dark);animation:slideUp .25s ease;}
.modal-header{padding:22px 24px 0;display:flex;align-items:center;justify-content:space-between;}
.modal-header h5{font-size:1.05rem;font-weight:700;}
.modal-body{padding:20px 24px;}
.modal-footer{padding:0 24px 22px;display:flex;gap:10px;justify-content:flex-end;}
.btn-close-modal{background:none;border:none;font-size:1.2rem;color:var(--gray);cursor:pointer;width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;}
.btn-close-modal:hover{background:var(--light);color:var(--danger);}
@keyframes slideUp{from{opacity:0;transform:translateY(24px);}to{opacity:1;transform:translateY(0);}}

/* ── Tool Panels (Calculator, Notes, Tasks) ── */
.tool-panel{position:fixed;top:68px;right:0;width:340px;height:calc(100vh - 68px);background:var(--white);box-shadow:-4px 0 24px rgba(0,0,0,0.12);z-index:800;transform:translateX(100%);transition:var(--transition);display:flex;flex-direction:column;}
.tool-panel.open{transform:translateX(0);}
.tool-panel-header{padding:18px 20px;border-bottom:1px solid #f0f0f0;display:flex;align-items:center;justify-content:space-between;font-weight:700;}
.tool-panel-body{flex:1;padding:16px;overflow-y:auto;}

/* ── Analog Clock ── */
#analog-clock{width:80px;height:80px;position:relative;}
#analog-clock canvas{border-radius:50%;}

/* ── App Mobile (Student/Teacher) ── */
.app-shell{max-width:480px;margin:0 auto;min-height:100vh;background:var(--white);position:relative;padding-bottom:72px;}
.app-topbar{background:var(--primary);color:#fff;padding:20px 20px 30px;border-radius:0 0 26px 26px;}
.app-topbar h2{font-size:1.3rem;font-weight:700;}
.app-topbar p{font-size:.8rem;opacity:.85;margin-top:2px;}
.app-topbar .avatar{width:46px;height:46px;border-radius:50%;border:2px solid rgba(255,255,255,0.5);object-fit:cover;}
.app-stats{display:flex;gap:10px;padding:0 16px;margin-top:-18px;overflow-x:auto;scrollbar-width:none;}
.app-stats::-webkit-scrollbar{display:none;}
.app-stat-chip{background:#fff;border-radius:14px;padding:12px 16px;min-width:130px;box-shadow:0 4px 18px rgba(0,97,242,0.12);flex-shrink:0;}
.app-stat-chip .value{font-size:1.2rem;font-weight:800;color:var(--primary);}
.app-stat-chip .label{font-size:.68rem;color:var(--gray);font-weight:500;margin-top:2px;}
.app-menu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:20px 16px 10px;}
.app-menu-item{background:#fff;border-radius:16px;padding:18px 10px;display:flex;flex-direction:column;align-items:center;gap:8px;box-shadow:0 2px 12px rgba(0,0,0,0.06);text-decoration:none;color:var(--dark);transition:var(--transition);border:1px solid #f0f0f0;}
.app-menu-item:active,.app-menu-item:hover{transform:scale(.97);background:var(--primary-light);}
.app-menu-item .icon-wrap{width:52px;height:52px;border-radius:14px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:1.3rem;color:var(--primary);}
.app-menu-item span{font-size:.75rem;font-weight:600;text-align:center;line-height:1.2;}
.app-bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;background:#fff;display:flex;border-top:1px solid #f0f0f0;box-shadow:0 -4px 20px rgba(0,0,0,0.06);z-index:900;}
.app-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;padding:10px 0 8px;color:var(--gray);font-size:.68rem;font-weight:600;text-decoration:none;gap:3px;transition:var(--transition);}
.app-nav-item i{font-size:1.2rem;}
.app-nav-item.active{color:var(--primary);}
.app-section-title{padding:4px 16px 8px;font-size:.8rem;font-weight:700;color:var(--gray);text-transform:uppercase;letter-spacing:.06em;}
.app-list-item{display:flex;align-items:center;gap:14px;padding:14px 16px;border-bottom:1px solid #f4f4f4;text-decoration:none;color:var(--dark);}
.app-list-item .icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;}
.app-list-item .info{flex:1;}
.app-list-item .title{font-weight:600;font-size:.9rem;}
.app-list-item .sub{font-size:.75rem;color:var(--gray);margin-top:2px;}
.app-list-item .right{text-align:right;}

/* ── Responsive ── */
@media(max-width:992px){
  .sidebar{left:-260px;}
  .sidebar.open{left:0;}
  .main-content{margin-left:0;}
}
@media(max-width:600px){
  .page-content{padding:16px;}
  .stat-grid{grid-template-columns:1fr 1fr;}
  .topbar{padding:0 16px;}
}