:root {
  --bg: #f7f7fa;
  --card: #ffffff;
  --btn: #f3f4f6;
  --btn-text: #111827;
  --btn-hover: #e5e7eb;
  --btn-active: #111827;
  --btn-active-text: #ffffff;
  --muted: #6b7280;
  --text: #0f172a;
  --border: #d1d5db;
  --flash-bg: #ecfeff;
  --flash-border: #a5f3fc;
  --flash-text: #0e7490;
  --success: #16a34a;
  --progress: #16a34a;
}
*{box-sizing:border-box}
body{margin:0;font-family:Calibri, Segoe UI, Roboto, Arial, sans-serif;background:var(--bg);color:var(--text)}
.container{max-width:980px;margin:32px auto;padding:0 16px}
.card{background:var(--card);border-radius:14px;padding:20px;border:1px solid var(--border);box-shadow:0 8px 24px rgba(0,0,0,.04)}
h1,h2,h3{margin:0 0 10px}
a{color:inherit;text-decoration:none}
a.button, button, input[type=submit]{
  display:inline-flex; align-items:center; justify-content:center;
  background:var(--btn);color:var(--btn-text);border:1px solid var(--border);
  padding:10px 16px;border-radius:10px;font-weight:600;cursor:pointer;height:40px;line-height:20px;
  font-size:14px;min-width:120px;text-align:center;transition:background .15s ease,border-color .15s ease,color .15s ease;
}
a.button:hover, button:hover, input[type=submit]:hover{ background:var(--btn-hover); border-color:#cbd5e1 }
a.button.active, .button.active{ background:var(--btn-active); color:var(--btn-active-text); border-color:var(--btn-active) }
.button.small, button.small, input[type=submit].small{min-width:120px;height:36px;font-size:13px;padding:8px 12px}
button.success, .success{ background: var(--success) !important; color: #fff !important; border-color: var(--success) !important; }
input,select{width:100%;padding:10px 12px;margin:6px 0 12px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text)}
table{width:100%;border-collapse:collapse;margin-top:12px;background:var(--card);border:1px solid var(--border);border-radius:10px;overflow:hidden}
th,td{padding:10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:middle}
tr:last-child td{border-bottom:none}
.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:10px}
.nav{display:flex;gap:10px;align-items:center;flex-wrap:nowrap;overflow:auto;white-space:nowrap}
.userchip{font-size:12px;color:var(--muted)}
ul.course-list{list-style:none;padding:0;margin:0}
.course-list li{margin:8px 0}
.progressbar{height:10px;background:#eef2f7;border-radius:999px;overflow:hidden;border:1px solid var(--border)}
.progressbar>div{height:10px;background:var(--progress);width:0}
footer{opacity:.7;font-size:12px;margin-top:32px;text-align:center}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.5px}
.logo svg{width:28px;height:28px}
.small{font-size:12px;color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:16px 0}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.flash{background:var(--flash-bg);border:1px solid var(--flash-border);color:var(--flash-text);padding:8px 12px;border-radius:10px;margin:8px 0 margin-top:8px; margin-bottom:8px; position:relative;  display:block; margin:12px 0; position:relative; }
.pager a{display:inline-block;margin:6px 6px 0 0;padding:6px 10px;border:1px solid var(--border);border-radius:8px;background:var(--card);color:inherit}
.pager a.active{background:var(--btn-active);color:var(--btn-active-text);border-color:var(--btn-active)}
.align-table{width:100%;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--card);margin-top:12px}
.align-table th, .align-table td{padding:10px;border-bottom:1px solid var(--border)}
.align-table tr:last-child td{border-bottom:none}
.drag-hint{font-size:12px;color:var(--muted);margin-bottom:6px}
.drag-row{cursor:grab}
.drag-row:active{cursor:grabbing}

.admin-menu{display:flex;flex-direction:column;gap:14px;margin-top:8px}
.admin-item{display:flex;gap:14px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px}
.admin-item p{margin:0;color:var(--muted)}
a.button.disabled{opacity:.5;pointer-events:none}

.form-inline{display:flex;gap:12px;align-items:center}
.form-inline > label{margin:0;width:auto}
.form-inline > select,.form-inline > input{width:auto;min-width:220px}
#dragTable td .actions{border-bottom:0;padding-bottom:0;margin-bottom:0}

/* Ensure only one divider line between lesson rows */
#dragTable td { border-bottom: 1px solid var(--border); }
#dragTable td .actions { border-bottom: 0 !important; }
#dragTable tr td:last-child .button { margin-right: 6px; }

.page-head{display:flex;align-items:center;justify-content:space-between;gap:12px}

.mt-16{margin-top:16px}

.mt-24{margin-top:24px}


/* v28: Better form wrapping */
.form-inline{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.form-inline > label{margin:0;width:auto}
.form-inline > select,.form-inline > input{width:auto;max-width:320px}
.form-group{margin-bottom:12px}
@media (max-width: 640px){
  input,select{width:100% !important;max-width:100%}
}