:root{
  --pink:#F43676;
  --bg:#ffffff;
  --text:#222222;
  --muted:#6b7280;
  --card:#ffffff;
  --border:#e5e7eb;
}

[data-theme="dark"]{
  --bg:#111315;
  --text:#eeeeee;
  --muted:#a3a3a3;
  --card:#161a1e;
  --border:#2a2f35;
}

*{box-sizing:border-box}
.uitm-cgpa-app{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  background:var(--bg);
  color:var(--text);
  padding:16px;
  max-width:1000px;
  margin:0 auto;
}

.app-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.app-header h2{
  margin:0;
  font-size:1.6rem;
  color:var(--text);
}
.header-actions{display:flex; align-items:center; gap:8px;}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:16px;
  box-shadow:0 6px 26px rgba(0,0,0,.06);
  margin-bottom:14px;
}

.row{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:12px;
}
.col{ grid-column: span 12; }
@media(min-width:640px){ .col{ grid-column: span 4; } }

.lbl{ display:block; font-weight:600; margin-bottom:6px; }
input, select{
  width:100%;
  background:transparent;
  border:1px solid var(--border);
  border-radius:12px;
  padding:10px 12px;
  color:var(--text);
  outline:none;
}
input:focus, select:focus{ border-color:var(--pink); box-shadow:0 0 0 2px color-mix(in srgb, var(--pink) 30%, transparent); }

.semester{
  margin-bottom:12px;
}
.semester-head{
  display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:8px;
}
.semester-title{ font-weight:700; }
.semester-actions{ display:flex; gap:8px; }

.table{
  width:100%;
  border-collapse:separate;
  border-spacing:0 8px;
}
.table thead th{
  text-align:left; font-size:.9rem; color:var(--muted); font-weight:600; padding:6px 8px;
}
.table tbody tr{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  overflow:hidden;
}
.table td{
  padding:6px 8px;
}
.table input[type="text"]{ min-width:140px; }
.table .credit-input{ width:90px; }
.table .grade-select{ width:140px; }
.row-actions{ display:flex; gap:6px; }

.btn{
  background:var(--pink);
  color:#fff;
  border:none;
  padding:10px 14px;
  border-radius:12px;
  cursor:pointer;
  font-weight:600;
  box-shadow:0 6px 20px rgba(244,54,118,.25);
}
.btn:hover{ filter:brightness(.95); }
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--pink); }
.btn-outline{
  background:transparent;
  color:var(--text);
  border:1px solid var(--border);
  box-shadow:none;
}
.btn-danger{
  background:#ef4444;
  box-shadow:0 6px 20px rgba(239,68,68,.25);
}
.btn-small{ padding:6px 10px; border-radius:10px; font-size:.9rem; }

.actions{ display:flex; align-items:center; gap:10px; margin-bottom:10px; flex-wrap:wrap; }

.metric{ background:var(--card); border:1px solid var(--border); border-radius:16px; padding:14px; }
.metric-label{ color:var(--muted); font-weight:600; }
.metric-value{ font-size:1.6rem; font-weight:800; color:var(--pink); }

.results h3{ margin-top:0; }
.download-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top:12px; }
.notes{ color:var(--muted); font-size:.9rem; margin-top:10px; }

/* Tooltips (on click) */
.tooltip-wrap{ position:relative; display:inline-block; }
.info-btn{
  background:transparent; border:1px solid var(--border); color:var(--text);
  font-weight:700; width:28px; height:28px; border-radius:999px; cursor:pointer;
}
.tooltip{
  position:absolute; z-index:50; min-width:240px; max-width:320px;
  background:var(--card) color:var(--text); border:1px solid var(--border);
  border-radius:12px; padding:12px; box-shadow:0 10px 30px rgba(0,0,0,.2);
  top:36px; right:0; display:none;
}
.tooltip h4{ margin:.2rem 0 .4rem; }
.tooltip-close{
  margin-top:8px; background:transparent; border:1px solid var(--border);
  color:var(--text); padding:6px 10px; border-radius:10px; cursor:pointer;
}
.tooltip[aria-hidden="false"]{ display:block; }

.grade-grid{
  display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap:6px; font-size:.92rem;
}

/* Print */
@media print{
  #themeToggle, .info-btn, #addSemesterBtn, #calcBtn, #downloadCsvBtn, #printBtn, .btn-danger, .btn-small { display:none !important; }
  .uitm-cgpa-app{ padding:0; box-shadow:none; background:#fff; color:#000; }
  .card{ box-shadow:none; border:1px solid #ddd; }
}