:root{
  --pink: #F43676;
  --bg: #ffffff;
  --card: #ffffff;
  --text: #111;
  --muted: #666;
  --radius: 14px;
  --shadow: 0 6px 18px rgba(18,18,18,0.06);
  --maxw: 820px;
  --gap: 12px;
}

#ucp-calc{ 
  max-width: var(--maxw);
  margin: 18px auto;
  padding: 16px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color: var(--text);
  background: var(--bg);
}

.ucp-header{
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 12px;
}
.ucp-header h2{
  font-size:18px;
  margin:0;
  color:var(--pink);
  letter-spacing:0.2px;
}

/* Mode row */
.mode-row{
  display:flex;
  gap:12px;
  margin-bottom:10px;
  flex-wrap:wrap;
}
.mode-row label{
  background:#f6f6f6;
  padding:8px 12px;
  border-radius:999px;
  font-size:13px;
  cursor:pointer;
}
.mode-row input{ margin-right:8px; }

/* Main area */
.calc-area{
  background:var(--card);
  border-radius:var(--radius);
  padding:14px;
  box-shadow:var(--shadow);
}

/* Semester card */
.semester{
  border:1px solid #eee;
  border-radius:12px;
  padding:10px;
  margin-bottom:12px;
  background:linear-gradient(180deg, rgba(255,255,255,0.6), rgba(255,255,255,0.9));
}
.semester-head{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:10px;
  margin-bottom:8px;
}
.semester-head h3{ margin:0; font-size:15px; color:var(--pink); }
.semester-controls button{ font-size:13px; padding:6px 8px; border-radius:8px; }

/* Course row */
.course-row{
  display:grid;
  grid-template-columns: 1fr 88px 110px 36px;
  gap:8px;
  align-items:center;
  margin-bottom:8px;
}
.course-row input[type="text"],
.course-row select,
.course-row input[type="number"]{
  width:100%;
  padding:8px 10px;
  border-radius:8px;
  border:1px solid #ddd;
  font-size:13px;
}
.course-row .remove-course{
  background:transparent;
  border:0;
  color:var(--muted);
  cursor:pointer;
  font-size:18px;
}

/* Controls */
.controls{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-top:8px;
  align-items:center;
}
.btn{
  background:#fafafa;
  border:1px solid #eee;
  padding:8px 12px;
  border-radius:10px;
  cursor:pointer;
  font-size:14px;
}
.btn.small{ padding:6px 10px; font-size:13px; }
.btn.primary{
  background:var(--pink);
  color:#fff;
  border:0;
}
.btn:active{ transform:translateY(1px); }

/* Result card (no table) */
.result-card{
  margin-top:14px;
  padding:12px;
  border-radius:12px;
  background:linear-gradient(180deg, #fff, #fff);
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}
.result-head h2{ margin:0 0 6px 0; color:var(--pink); font-size:16px; }
.result-body p{ margin:6px 0; font-size:14px; color:var(--text); }


/* Mobile-first adjustments */
@media(min-width:700px){
  .course-row{ grid-template-columns: 1fr 110px 140px 36px; }
  :root{ --maxw:840px; }
}

/* Dark mode */
body.dark #ucp-calc,
#ucp-calc.dark{
  --bg: #0f1113;
  --card: #0f1113;
  --text: #e6e6e6;
  --muted: #b8b8b8;
  --shadow: 0 8px 30px rgba(0,0,0,0.6);
}