:root{--g:#146b46;--g2:#0d4d34;--bg:#f4f7f6;--line:#d8e1dd;--txt:#1c2b25}
*{box-sizing:border-box}body{margin:0;background:var(--bg);font:14px Arial,sans-serif;color:var(--txt)}
.topbar{background:white;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:12px 5%;gap:20px}
.brand{display:flex;align-items:center;gap:12px}.brand img{width:52px;height:52px;object-fit:contain}.brand strong{display:block;font-size:20px;color:var(--g2)}.brand span,.userbox span{display:block;color:#68756f;font-size:12px}
.userbox{text-align:right}.nav{background:var(--g2);padding:0 5%;display:flex;flex-wrap:wrap}.nav a{color:white;text-decoration:none;padding:12px 14px}.nav a:hover{background:var(--g)}
.container{max-width:1200px;margin:22px auto;padding:0 16px;min-height:70vh}h1{font-size:25px;color:var(--g2)}h2,h3{color:var(--g2)}
.card{background:white;border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:16px;box-shadow:0 3px 12px rgba(0,0,0,.03)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}.stat strong{display:block;font-size:28px;color:var(--g)}.stat span{color:#667}
.btn{display:inline-block;border:0;border-radius:8px;background:var(--g);color:white;padding:9px 13px;text-decoration:none;cursor:pointer}.btn.secondary{background:#5c6b65}.btn.danger{background:#a73535}.btn.light{background:#e8f0ed;color:var(--g2)}
table{width:100%;border-collapse:collapse;background:white}th,td{border:1px solid var(--line);padding:9px;text-align:left;vertical-align:top}th{background:#e9f3ef;color:var(--g2)}.table-wrap{overflow:auto}
input,select,textarea{width:100%;padding:9px;border:1px solid #bfcac5;border-radius:7px;background:white}textarea{min-height:90px}label{font-weight:bold;display:block;margin:8px 0 5px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.alert{padding:11px;border-radius:8px;margin:10px 0}.success{background:#e4f6eb;color:#145d35}.danger{background:#fde8e8;color:#8a2727}.warning{background:#fff3d6;color:#75500a}
.badge{display:inline-block;padding:3px 8px;border-radius:999px;background:#e7efec;font-size:12px}.muted{color:#738079}.small{font-size:12px;color:#728078}
.loginbox{max-width:430px;margin:55px auto}.loginbox .logo{text-align:center}.loginbox .logo img{width:90px}
.actions{display:flex;gap:8px;flex-wrap:wrap}.course-card h3{margin-top:0}.meeting{background:#eef6ff;border-left:4px solid #2d68aa;padding:12px;margin:10px 0}
footer{text-align:center;padding:25px;color:#728078}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}.topbar{align-items:flex-start}.brand strong{font-size:16px}.nav{padding:0}.nav a{padding:10px}.userbox{display:none}}