:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --border: #e3e8ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-700: #1d4ed8;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 10% -10%, #eef2ff, transparent), var(--bg);
  color: var(--text);
  font-weight: 500;
}

.app-header {
  padding: 24px 24px 8px;
}
.app-header h1 { margin: 0 0 6px; font-weight: 650; }
.subtitle { margin: 0; color: var(--muted); }

.container { max-width: 1200px; margin: 0 auto; padding: 16px 24px 48px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 10px 25px rgba(16, 24, 40, 0.05);
  transition: box-shadow .2s ease, transform .2s ease;
}
.card:hover { box-shadow: 0 12px 30px rgba(16, 24, 40, 0.08); }
.card-title { margin: 4px 0 12px; font-size: 18px; font-weight: 700; }
.hidden { display: none; }

#dropZone { position: relative; padding: 0; overflow: hidden; }
.drop-inner {
  display: grid; place-items: center; gap: 8px;
  height: 160px; cursor: pointer; text-align: center;
  color: var(--muted);
  background: linear-gradient(180deg, #ffffff, #fafafa);
  border-bottom: 1px dashed var(--border);
  transition: background-color .2s ease, outline-color .2s ease, transform .15s ease;
}
.drop-inner.dragover { outline: 2px dashed var(--primary); outline-offset: -10px; color: var(--text); background: #f0f7ff; transform: scale(1.01); }
.drop-title { font-weight: 700; font-size: 16px; }
.drop-subtitle { font-size: 12px; opacity: 0.9; }
.file-meta { border-top: 1px dashed var(--border); padding: 10px 12px; font-size: 12px; color: var(--muted); background: #fafafa; }

.controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) {
  .controls-grid { grid-template-columns: 1fr; }
}

.control-row { display: grid; gap: 6px; margin-bottom: 12px; }
.control-label { font-size: 12px; color: var(--muted); }
.radio-group { display: flex; gap: 12px; flex-wrap: wrap; }
.small-row { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; }
.auto-apply { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }

input[type="text"], select {
  background: #ffffff; border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 10px 12px; outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="text"]:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.fullwidth { width: 100%; }
.hint { color: var(--muted); font-size: 12px; }

.buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.btn {
  padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: #ffffff; color: var(--text); cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease, transform .05s ease;
  font-weight: 600;
}
.btn:hover { border-color: var(--primary); box-shadow: 0 2px 6px rgba(16,24,40,.08); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: linear-gradient(180deg, var(--primary), var(--primary-700)); border-color: transparent; color: #ffffff; font-weight: 700; }
.btn.success { background: linear-gradient(180deg, #10b981, var(--success)); border-color: transparent; color: #ffffff; font-weight: 700; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.kpi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 12px; }
.kpi { background: #ffffff; border: 1px solid var(--border); border-radius: 10px; padding: 10px; }
.kpi-label { color: var(--muted); font-size: 12px; }
.kpi-value { font-size: 22px; font-weight: 700; }

.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 900px) { .charts { grid-template-columns: 1fr; } }
.chart-item { background: #ffffff; border: 1px solid var(--border); border-radius: 10px; padding: 10px; }
.chart-title { margin: 0 0 8px; font-size: 14px; color: var(--muted); }

.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; }
thead th { position: sticky; top: 0; background: #f3f4f6; border-bottom: 1px solid var(--border); padding: 10px; text-align: left; font-weight: 700; color: var(--text); }
tbody td { border-top: 1px solid #eef2f7; padding: 10px; vertical-align: top; }
tbody tr:hover { background: #f9fafb; transition: background-color .15s ease; }
.muted { color: var(--muted); text-align: center; }

.table-controls { display: flex; justify-content: flex-end; gap: 12px; margin-bottom: 8px; }
.table-controls select { min-width: 80px; }
.table-controls .spacer { flex: 1; }
.copy-actions { display: flex; gap: 8px; }

.pagination { display: flex; gap: 6px; align-items: center; justify-content: flex-end; margin-top: 12px; flex-wrap: wrap; }
.pagination .page-btn { padding: 6px 10px; border: 1px solid var(--border); background: #ffffff; color: var(--text); border-radius: 6px; cursor: pointer; transition: border-color .15s ease, box-shadow .15s ease; }
.pagination .page-btn:hover { border-color: var(--primary); box-shadow: 0 2px 6px rgba(16,24,40,.08); }
.pagination .page-btn.active { background: var(--primary); color: #ffffff; border-color: transparent; font-weight: 700; }
.pagination .page-info { color: var(--muted); font-size: 12px; margin-right: 6px; }

.dosen-list { color: var(--text); font-size: 13px; line-height: 1.6; font-weight: 600; }
.dosen-list .pill { display: inline-block; margin: 4px; padding: 6px 10px; border-radius: 999px; background: #ffffff; border: 1px solid var(--border); color: var(--muted); }
.note { color: var(--muted); font-size: 12px; margin-top: 10px; }

.app-footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }

/* Filter summary chips */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chips .chip { background: #ffffff; border: 1px solid var(--border); color: var(--text); padding: 6px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }

/* Links in light mode */
a { color: var(--primary); }
a:hover { color: var(--primary-700); }