/* Week 5 - Turn 1 - Mã đề A: Đặt lịch khám bệnh */
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Arial, sans-serif; background: #f0fdfa; color: #134e4a; }
header.trang-header { background: #0f766e; color: #ffffff; padding: 22px 28px; }
header.trang-header h1 { margin: 0 0 6px; font-size: 1.5rem; }
header.trang-header p { margin: 0; color: #ccfbf1; }
nav.dieu-huong-nho { padding: 10px 28px; background: #ccfbf1; }
nav.dieu-huong-nho a { color: #0f766e; margin-right: 14px; text-decoration: none; font-weight: 600; }
nav.dieu-huong-nho a:hover { text-decoration: underline; }
main { max-width: 980px; margin: 0 auto; padding: 24px 20px 48px; }
.khung-gioi-thieu, .khung-giai-trinh { background: #ffffff; border: 1px solid #99f6e4; border-radius: 8px; padding: 18px 22px; margin-bottom: 22px; }
.khung-gioi-thieu h2, .khung-giai-trinh h2 { color: #0f766e; margin-top: 0; }
form.form-dang-ky { background: #ffffff; border: 1px solid #99f6e4; border-radius: 10px; padding: 22px; margin-bottom: 22px; }
.bo-cuc-kham { display: flex; flex-wrap: wrap; gap: 20px; }
fieldset.nhom-benh-nhan, fieldset.nhom-chi-so, fieldset.nhom-lich-hen {
  flex: 1 1 280px; border: 1px solid #5eead4; border-radius: 8px; padding: 16px; margin: 0;
}
legend { font-weight: bold; color: #0f766e; padding: 0 8px; }
.truong { margin-bottom: 14px; display: flex; flex-direction: column; }
.truong label { margin-bottom: 6px; font-weight: 600; font-size: 0.92rem; }
.truong input, .truong textarea, .truong select {
  padding: 8px 10px; border: 1px solid #99f6e4; border-radius: 6px; font-family: inherit; font-size: 0.95rem;
}
.truong input[type="range"] { padding: 0; cursor: pointer; }
.truong input[type="color"] { padding: 2px; height: 38px; cursor: pointer; }
.truong input:focus, .truong textarea:focus {
  outline: none; border-color: #0f766e; box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.25); background: #f0fdfa;
}
.nhom-radio, .nhom-checkbox { margin-bottom: 14px; display: flex; flex-direction: column; gap: 6px; }
.nhom-radio span, .nhom-checkbox span { font-weight: 600; font-size: 0.92rem; margin-bottom: 4px; }
.nhom-radio label, .nhom-checkbox label { font-weight: normal; font-size: 0.9rem; display: flex; align-items: center; gap: 6px; cursor: pointer; }
.nhom-radio input, .nhom-checkbox input { cursor: pointer; }
.nhom-radio input:focus, .nhom-checkbox input:focus { outline: 2px solid #0f766e; outline-offset: 2px; }
aside.chu-y-y-te { flex: 1 1 100%; background: #e6fffa; border-left: 4px solid #0f766e; padding: 12px 16px; border-radius: 4px; margin-top: 6px; }
aside.chu-y-y-te h3 { margin: 0 0 6px; font-size: 1rem; color: #0f766e; }
aside.chu-y-y-te p { margin: 0; font-size: 0.88rem; }
.nut-gui {
  margin-top: 18px; background: #0f766e; color: #ffffff; border: none; padding: 12px 28px;
  border-radius: 6px; font-size: 1rem; font-weight: 600; cursor: pointer;
}
.nut-gui:hover { background: #115e59; }
.nut-gui:focus { outline: 3px solid #2dd4bf; outline-offset: 2px; }
table.bang-giai-trinh { width: 100%; border-collapse: collapse; background: #ffffff; }
table.bang-giai-trinh th, table.bang-giai-trinh td { border: 1px solid #99f6e4; padding: 9px 12px; text-align: left; font-size: 0.9rem; }
table.bang-giai-trinh th { background: #0f766e; color: #ffffff; }
table.bang-giai-trinh tr:nth-child(even) td { background: #f0fdfa; }
footer.trang-footer { text-align: center; padding: 16px; color: #0f766e; font-size: 0.85rem; }