:root{--navy:#111844;--indigo:#4B5694;--blue:#7288AE;--cream:#EAE0CF;--white:#fff;--text:#172033;--muted:#697386;--line:#e7eaf1;--danger:#b42318;--success:#087443;--shadow:0 22px 50px rgba(17,24,68,.12);--radius:22px}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,#f7f8fc 0%,#eef2f8 55%,#f7f0df 100%);color:var(--text)}a{text-decoration:none;color:inherit}.app-shell{min-height:100vh;display:flex}.sidebar{position:fixed;inset:0 auto 0 0;width:286px;background:linear-gradient(180deg,var(--navy),#20295f);color:#fff;padding:24px;display:flex;flex-direction:column;gap:22px;box-shadow:12px 0 36px rgba(17,24,68,.25);z-index:5}.brand{display:flex;align-items:center;gap:13px;font-weight:900;font-size:22px;letter-spacing:.2px}.brand img{width:54px;height:54px;object-fit:contain;border-radius:14px;background:#fff;padding:4px}.user-mini{padding:16px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(255,255,255,.08)}.user-mini strong{display:block}.user-mini small{display:block;color:#d8e0f2;margin-top:4px}.sidebar nav{display:grid;gap:8px}.sidebar nav a,.logout{padding:13px 14px;border-radius:14px;color:#eef3ff;transition:.2s}.sidebar nav a:hover,.logout:hover{background:rgba(234,224,207,.14);transform:translateX(3px)}.logout{margin-top:auto;background:rgba(255,255,255,.08)}.main{margin-left:286px;width:calc(100% - 286px);padding:28px}.main-full{margin:0;width:100%;padding:0}.topbar{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:22px;background:rgba(255,255,255,.72);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.8);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow)}.topbar h1{margin:0;font-size:28px;color:var(--navy)}.topbar p{margin:6px 0 0;color:var(--muted)}.pill{display:inline-flex;align-items:center;border-radius:999px;background:var(--cream);color:var(--navy);padding:9px 14px;font-weight:800}.grid{display:grid;gap:18px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.9);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.stat{display:flex;justify-content:space-between;align-items:center}.stat b{font-size:34px;color:var(--navy)}.stat span{color:var(--muted);font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:11px 15px;background:var(--navy);color:#fff;font-weight:800;cursor:pointer}.btn:hover{filter:brightness(1.08)}.btn.secondary{background:var(--indigo)}.btn.soft{background:#eef2f8;color:var(--navy)}.btn.danger{background:var(--danger)}.actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.form{display:grid;gap:14px}.field label{display:block;font-weight:800;margin-bottom:7px;color:var(--navy)}input,select,textarea{width:100%;padding:12px 14px;border:1px solid #d8deea;border-radius:14px;background:#fff;font:inherit}textarea{min-height:115px;resize:vertical}.table{width:100%;border-collapse:separate;border-spacing:0 10px}.table th{text-align:left;color:var(--muted);font-size:13px;padding:0 12px}.table td{background:#fff;padding:14px 12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.table td:first-child{border-left:1px solid var(--line);border-radius:14px 0 0 14px}.table td:last-child{border-right:1px solid var(--line);border-radius:0 14px 14px 0}.alert{padding:14px 16px;border-radius:16px;margin-bottom:16px;font-weight:700}.alert.success{background:#e7f8ef;color:var(--success)}.alert.error{background:#fdecea;color:var(--danger)}.alert.info{background:#eef2f8;color:var(--navy)}.auth-page{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}.auth-hero{padding:58px;background:linear-gradient(145deg,var(--navy),var(--indigo));color:#fff;display:flex;flex-direction:column;justify-content:center}.auth-hero img{width:190px;border-radius:28px;background:#fff;padding:8px;margin-bottom:24px}.auth-hero h1{font-size:50px;margin:0 0 12px}.auth-hero p{font-size:18px;line-height:1.7;color:#e4e9f7}.auth-box{display:flex;align-items:center;justify-content:center;padding:32px}.auth-card{width:min(470px,100%)}.course-head{background:linear-gradient(135deg,var(--navy),var(--indigo));color:#fff;border-radius:28px;padding:28px;box-shadow:var(--shadow);margin-bottom:20px}.course-head h2{font-size:32px;margin:0 0 8px}.course-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px}.course-meta span{border-radius:999px;background:rgba(255,255,255,.14);padding:9px 12px;font-weight:800}.meeting-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px}.meeting-card{position:relative;overflow:hidden;background:#fff;border:1px solid #e3e8f3;border-radius:22px;padding:18px;min-height:154px;box-shadow:0 14px 34px rgba(17,24,68,.08);transition:.2s}.meeting-card:before{content:"";position:absolute;right:-28px;top:-28px;width:92px;height:92px;border-radius:50%;background:var(--cream)}.meeting-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.meeting-card h3{margin:0;color:var(--navy);font-size:20px}.meeting-card p{color:var(--muted);min-height:36px}.meeting-no{display:inline-flex;width:38px;height:38px;border-radius:13px;align-items:center;justify-content:center;background:var(--navy);color:#fff;font-weight:900;margin-bottom:10px}.badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.badge{font-size:12px;font-weight:900;color:var(--navy);background:#eef2f8;border-radius:999px;padding:6px 9px}.tabs{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:18px}.tab{padding:10px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:800;color:var(--navy)}.tab.active{background:var(--navy);color:#fff}.content-list{display:grid;gap:12px}.content-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px}.content-item h4{margin:0 0 6px;color:var(--navy)}.content-item p{color:var(--muted);margin:0 0 10px}.progress{height:10px;background:#edf1f7;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--indigo),var(--blue))}.muted{color:var(--muted)}.empty{text-align:center;padding:36px;color:var(--muted);background:#fff;border-radius:22px;border:1px dashed #cbd5e1}.section-title{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:22px 0 12px}.section-title h2{margin:0;color:var(--navy)}
@media(max-width:1100px){.grid-4,.meeting-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:800px){.sidebar{position:relative;width:100%;inset:auto}.app-shell{display:block}.main{margin:0;width:100%;padding:16px}.topbar{display:block}.auth-page{grid-template-columns:1fr}.auth-hero{padding:32px}.auth-hero h1{font-size:36px}.grid-2,.grid-3,.grid-4,.meeting-grid{grid-template-columns:1fr}.table{font-size:14px}}