* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #0f0f0f;
  color: #f0f0f0;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  padding: 30px 20px;
}
.card {
  background: #1a1a1a;
  border-radius: 16px;
  padding: 30px;
  width: 100%;
  max-width: 520px;
}
h1 { color: #c9a84c; margin-bottom: 6px; font-size: 1.4rem; }
p.subtitle { color: #666; font-size: 0.85rem; margin-bottom: 28px; }
label {
  display: block;
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 6px;
}
input[type="text"], select {
  width: 100%;
  padding: 10px;
  background: #111;
  border: 1px solid #333;
  border-radius: 8px;
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 16px;
  outline: none;
}
input[type="text"]:focus,
select:focus { border-color: #c9a84c; }
select option { background: #111; }
.row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}
.row .col { flex: 1; }
.row .col label { margin-bottom: 6px; }
.row .col input {
  width: 100%;
  padding: 10px;
  background: #111;
  border: 1px solid #333;
  border-radius: 8px;
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  margin-bottom: 0;
}
.row .col input:focus { border-color: #c9a84c; }
button {
  width: 100%;
  padding: 12px;
  background: #c9a84c;
  color: #000;
  font-size: 1rem;
  font-weight: bold;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 4px;
}
button:hover { background: #e0c068; }
.stats {
  display: flex;
  justify-content: space-between;
  background: #111;
  border: 1px solid #222;
  border-radius: 10px;
  padding: 14px 16px;
  margin: 24px 0 16px;
  font-size: 0.82rem;
  color: #666;
}
.stats b { color: #c9a84c; }
#log h2 {
  font-size: 0.85rem;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.entry {
  background: #111;
  border: 1px solid #222;
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
}
.entry-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}
.entry-topic { font-weight: bold; font-size: 1rem; }
.entry-date { font-size: 0.75rem; color: #555; }
.entry-scores { font-size: 0.82rem; color: #888; margin-bottom: 8px; }
.entry-scores b { color: #c9a84c; }
.subject-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: bold;
  margin-right: 8px;
}
.Physics   { background: #1a2a3a; color: #4a9eff; border: 1px solid #4a9eff; }
.Chemistry { background: #1a3a2a; color: #4caf50; border: 1px solid #4caf50; }
.Maths     { background: #3a1a3a; color: #c97aff; border: 1px solid #c97aff; }
.acc-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: bold;
}
.acc-high { background: #1a3a1a; color: #4caf50; border: 1px solid #4caf50; }
.acc-mid  { background: #3a3a1a; color: #c9a84c; border: 1px solid #c9a84c; }
.acc-low  { background: #3a1a1a; color: #e05c5c; border: 1px solid #e05c5c; }
.entry-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
}
.delete-btn {
  background: none;
  border: none;
  color: #444;
  font-size: 0.8rem;
  cursor: pointer;
}
.delete-btn:hover { color: #e05c5c; }
.empty {
  color: #444;
  font-size: 0.85rem;
  text-align: center;
  padding: 16px 0;
}