*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

:root{
  --green:#2E7D5B;
  --blue:#4F7CFF;
  --purple:#8B5CF6;
  --orange:#F59E0B;
  --bg:#F5F8F7;
  --text:#1F2A2E;
  --muted:#6B7280;
  --border:#E5E7EB;
}

body{
  font-family:'Inter',sans-serif;
  background:var(--bg);
  color:var(--text);
}

.notifications-page{
  max-width:1400px;
  margin:auto;
  padding:40px;
}

.notifications-header{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-bottom:40px;
}

.eyebrow{
  color:var(--green);
  font-size:13px;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:1px;
  margin-bottom:8px;
}

.notifications-header h1{
  font-size:52px;
  margin-bottom:8px;
}

.notifications-header span{
  color:var(--muted);
}

.back-btn{
  text-decoration:none;
  background:var(--green);
  color:#fff;
  padding:14px 22px;
  border-radius:14px;
  font-weight:700;
}

.notification-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-bottom:40px;
}

.stat-card{
  background:#fff;
  padding:28px;
  border-radius:24px;
  text-align:center;
  border:1px solid var(--border);
  box-shadow:0 10px 30px rgba(0,0,0,.05);
}

.stat-card h2{
  font-size:42px;
  color:var(--green);
  margin-bottom:10px;
}

.stat-card p{
  color:var(--muted);
}

.filter-section{
  display:flex;
  gap:20px;
  margin-bottom:35px;
}

.filter-section input{
  flex:1;
  height:58px;
  border:1px solid var(--border);
  border-radius:16px;
  padding:0 20px;
  font-size:15px;
}

.filter-buttons{
  display:flex;
  gap:10px;
}

.filter-btn{
  border:none;
  background:#fff;
  border:1px solid var(--border);
  padding:12px 18px;
  border-radius:12px;
  font-weight:700;
  cursor:pointer;
}

.filter-btn.active{
  background:var(--green);
  color:#fff;
}

.notifications-list{
  display:flex;
  flex-direction:column;
  gap:18px;
}

.notification-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:24px;
  padding:22px;
  display:flex;
  gap:18px;
  box-shadow:0 12px 35px rgba(0,0,0,.05);
  cursor:pointer;
  transition:.3s;
}

.notification-card:hover{
  transform:translateY(-4px);
}

.notification-card.unread{
  border-left:5px solid var(--green);
}

.notify-icon{
  width:60px;
  height:60px;
  border-radius:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:26px;
  flex-shrink:0;
}

.assignment{
  background:#FFF3DD;
}

.live{
  background:#EAF0FF;
}

.certificate{
  background:#EAF6EF;
}

.notify-content{
  flex:1;
}

.notify-top{
  display:flex;
  justify-content:space-between;
  gap:20px;
  margin-bottom:8px;
}

.notify-top h3{
  font-size:22px;
}

.notify-top span{
  background:#EAF6EF;
  color:var(--green);
  padding:6px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
}

.notify-top .read{
  background:#F3F4F6;
  color:var(--muted);
}

.notify-content p{
  color:var(--muted);
  line-height:1.7;
  margin-bottom:8px;
}

.notify-content small{
  color:var(--muted);
}

.mark-all-btn{
  margin-top:30px;
  width:100%;
  height:56px;
  border:none;
  border-radius:16px;
  background:var(--green);
  color:#fff;
  font-weight:800;
  cursor:pointer;
}

@media(max-width:1100px){
  .notification-stats{
    grid-template-columns:repeat(2,1fr);
  }

  .filter-section{
    flex-direction:column;
  }
}

@media(max-width:768px){
  .notifications-page{
    padding:20px;
  }

  .notifications-header{
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
  }

  .notifications-header h1{
    font-size:40px;
  }

  .notification-stats{
    grid-template-columns:1fr;
  }

  .filter-buttons{
    overflow:auto;
  }

  .notification-card{
    flex-direction:column;
  }

  .notify-top{
    flex-direction:column;
  }
}