/* =====================================================================
   Course components – notes, programs, outputs, Q/A, MCQ, references
   Theme: #8892BE · #4F5B93 · #99CC99
   ===================================================================== */

/* ---- inline code ---- */
code, code.inl { font-family: "DejaVu Sans Mono", Consolas, "Courier New", monospace; font-size: .9em; color: #3d4774; background: #eef0f8; padding: 1px 5px; border-radius: 4px; word-break: break-word; }
.card-title code { font-size: .85em; }

/* ---- notes ---- */
.notes p, .notes li { line-height: 1.7; }
.notes ul, .notes ol { padding-left: 1.4rem; }
h6.sub { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--indigo); font-size: 16.5px; margin: 20px 0 10px; padding-left: 10px; border-left: 4px solid var(--peri); }
.topic-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.topic-meta span { background: #fff; border: 1px solid var(--border); border-radius: 30px; padding: 4px 12px; font-size: 13.5px; color: var(--muted); }
.topic-meta span i { color: var(--indigo); vertical-align: -2px; }
.topic-meta .tm-part { background: var(--indigo); color: #fff; border-color: var(--indigo); }
.topic-meta .tm-part i { color: var(--green); }

/* ---- objectives / takeaways ---- */
.objectives { background: var(--green-tint); border-left: 5px solid var(--green); border-radius: 6px; padding: 14px 18px; }
.objectives p { margin-bottom: 6px; }
.objectives .objl { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--green-dark); }
.objectives ul { margin-bottom: 0; }
.takeaways { background: var(--peri-tint); border-left: 5px solid var(--peri); border-radius: 6px; padding: 14px 18px 6px; }
.takeaways li { margin-bottom: 6px; }

/* ---- note / info / warn ---- */
.note, .info, .warn { border-radius: 6px; padding: 12px 16px; margin: 14px 0; }
.note { background: var(--peri-tint2); border: 1px solid var(--border); border-left: 5px solid var(--peri); }
.info { background: #f3f4fa; border: 1px solid var(--border); border-left: 5px solid var(--indigo); }
.info .infot { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--indigo); margin-bottom: 4px; }
.warn { background: #fff8e6; border: 1px solid #f1dfb0; border-left: 5px solid #d9a21b; }
.note p:last-child, .info p:last-child, .warn p:last-child { margin-bottom: 0; }

/* ---- program code ---- */
.codewrap { margin: 14px 0 0; border-radius: 8px; overflow: hidden; border: 1px solid #2c3354; position: relative; }
.codelabel { background: var(--indigo); color: #fff; font-family: "DejaVu Sans Mono", Consolas, monospace; font-size: 12.5px; padding: 7px 90px 7px 14px; word-break: break-all; }
pre.code {
  margin: 0; padding: 14px 16px; background: #232842; color: #eceffa; font-family: "DejaVu Sans Mono", Consolas, "Courier New", monospace;
  font-size: 13.5px; line-height: 1.55; overflow-x: auto; white-space: pre; tab-size: 4;
}
.codewrap .copy-btn {
  position: absolute; right: 8px; top: 5px; border: 1px solid rgba(255,255,255,.4); background: rgba(255,255,255,.12); color: #fff;
  font-size: 12px; border-radius: 4px; padding: 1px 8px; cursor: pointer; font-family: "Poppins", sans-serif;
}
.codewrap .copy-btn:hover { background: var(--green); color: #102010; border-color: var(--green); }
.codewrap.nolabel .copy-btn { top: 8px; }
.codewrap + .output { margin-top: 0; border-top-left-radius: 0; border-top-right-radius: 0; }

/* ---- program output ---- */
.output { border: 2px solid var(--green); border-radius: 8px; margin: 10px 0 16px; overflow: hidden; background: #fff; }
.output .outhead { background: var(--green); color: #1d331d; padding: 5px 12px; font-size: 12.5px; }
.output .outtag { font-family: "Poppins", sans-serif; font-weight: 700; letter-spacing: 1.5px; margin-right: 6px; }
.output .outlabel { font-family: "DejaVu Sans Mono", Consolas, monospace; word-break: break-all; }
.output pre.outtext { margin: 0; padding: 12px 14px; background: #f7fbf7; color: #1f2a1f; font-family: "DejaVu Sans Mono", Consolas, monospace; font-size: 13.5px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; }
.output .shot { padding: 10px; background: #f7fbf7; border-bottom: 1px solid #e3efe3; }
.output .shot img { max-width: 100%; height: auto; border: 1px solid #cfd8cf; border-radius: 4px; box-shadow: 0 2px 6px rgba(0,0,0,.08); background: #fff; }
.output .dim { color: #7a8a7a; font-style: italic; }
.output.sqlout { border-color: var(--peri); }
.output.sqlout .outhead { background: var(--peri); color: #141833; }
.output.sqlout pre.outtext { background: #f6f7fb; color: #23284a; font-size: 12.5px; white-space: pre; overflow-x: auto; word-break: normal; }

/* ---- figures / flow ---- */
.figure { text-align: center; margin: 12px 0; }
.figure img { max-width: 100%; height: auto; border: 1px solid var(--border); border-radius: 6px; }
.caption { text-align: center; color: var(--muted); font-size: 13.5px; font-style: italic; }
.flow { max-width: 620px; margin: 14px auto; }
.flow .fbox { border: 2px solid var(--peri); border-radius: 8px; padding: 8px 14px; background: var(--peri-tint2); }
.flow .ft { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--indigo); }
.flow .arrow { text-align: center; color: var(--green-dark); font-size: 20px; line-height: 1.2; }
.tbl td code { white-space: normal; }

/* ---- Q/A ---- */
.qa-list .accordion-button { font-size: 15px; font-weight: 500; color: var(--text); padding: 12px 14px; }
.qa-list .qa-no { font-family: "Poppins", sans-serif; font-weight: 700; color: var(--indigo); }
.qa-list .accordion-body { background: var(--peri-tint2); border-left: 4px solid var(--green); line-height: 1.65; }
.qa-list .accordion-body p:last-child { margin-bottom: 0; }

/* ---- MCQ ---- */
.mcq { border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; margin-bottom: 14px; background: #fff; }
.mcq-q { font-weight: 600; margin-bottom: 10px; }
.mcq-no { font-family: "Poppins", sans-serif; color: var(--indigo); }
.mcq-options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 10px; }
@media (max-width: 767px) { .mcq-options { grid-template-columns: 1fr; } }
.mcq-opt { display: block; border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; cursor: pointer; transition: .2s; margin: 0; }
.mcq-opt:hover { background: var(--peri-tint); border-color: var(--peri); }
.mcq-opt input { accent-color: var(--indigo); margin-right: 4px; }
.mcq-opt.correct { background: #e7f4e7; border-color: var(--green); box-shadow: inset 4px 0 0 var(--green); }
.mcq-opt.wrong { background: #fdeeee; border-color: #e3a0a0; box-shadow: inset 4px 0 0 #d46a6a; }
.mcq-result { font-weight: 600; margin-left: 8px; font-size: 14px; }
.mcq-result.ok { color: var(--green-dark); }
.mcq-result.no { color: #b23b3b; }
.mcq-answer { margin-top: 8px; }
.mcq-answer summary { color: var(--indigo); cursor: pointer; font-size: 14px; font-weight: 600; }
.mcq-answer p { background: var(--green-tint); border-left: 4px solid var(--green); padding: 8px 12px; margin: 8px 0 0; border-radius: 4px; font-size: 14.5px; }
.mcq-answer .src { color: var(--muted); font-size: 13px; }
.mcq-actions { margin-top: 6px; }
.mcq-score { font-family: "Poppins", sans-serif; font-weight: 600; margin-left: 10px; color: var(--indigo); }
.mcq-score.pass { color: var(--green-dark); }

/* ---- references ---- */
.ref-note { background: var(--peri-tint2); border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; font-size: 13.5px; color: var(--muted); }
.ref-note i { color: var(--indigo); }
.ref-list li { margin-bottom: 8px; line-height: 1.55; word-break: break-word; }
.ref-list a { font-size: 13.5px; }

/* ---- program files / videos ---- */
.res-list { list-style: none; padding-left: 0; }
.res-list li { padding: 8px 12px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 8px; background: var(--peri-tint2); }
.res-list li i { color: var(--indigo); font-size: 20px; vertical-align: -4px; margin-right: 4px; }
.video-wrap { position: relative; padding-top: 56.25%; margin-bottom: 12px; }
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 8px; }
.video-title { font-weight: 600; margin-bottom: 6px; }
.vl-toc a, .qp-toc a { display: inline-block; margin: 0 6px 8px 0; padding: 4px 10px; border: 1px solid var(--border); border-radius: 4px; font-size: 13.5px; background: #fff; }
.vl-toc a:hover, .qp-toc a:hover { border-color: var(--peri); background: var(--peri-tint); text-decoration: none; }
.vl-search, .qp-search { max-width: 460px; }
.vl-topic { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 14px; }
.vl-topic:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.vl-topic h6 { font-weight: 600; color: var(--indigo); margin-bottom: 10px; }
.vl-topic h6 .chn { color: var(--green-dark); margin-right: 6px; }
.vl-card { border: 1px solid var(--border); background: #fff; height: 100%; border-radius: 6px; overflow: hidden; }
.vl-play { position: relative; display: block; width: 100%; padding: 0; border: 0; background: #232842; aspect-ratio: 16 / 9; cursor: pointer; overflow: hidden; }
.vl-play img { width: 100%; height: 100%; object-fit: cover; display: block; opacity: .9; }
.vl-play .vl-icon { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 64px; height: 44px; border-radius: 12px; background: rgba(79, 91, 147, .92); display: flex; align-items: center; justify-content: center; }
.vl-play .vl-icon i { color: #fff; font-size: 30px; }
.vl-card iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; display: block; }
.vl-meta { padding: 8px 12px; font-size: 14px; }
.vl-empty { display: none; }

/* ---- home page ---- */
.xampp-strip { background: linear-gradient(120deg, var(--indigo), #5f6ba3 60%, var(--peri)); border: 0; }
.xampp-strip .card-title, .xampp-strip p { color: #fff; }
.xampp-strip .card-title::after { display: none; }
.xampp-strip code.inl { background: rgba(255,255,255,.18); color: #fff; }
.xampp-strip .btn-primary { background: var(--green); border-color: var(--green); color: #102010; }
.xampp-strip .btn-primary:hover { background: var(--green-hover) !important; border-color: var(--green-hover) !important; color: #102010 !important; }
.xampp-strip .btn-outline-primary { background: transparent; border-color: #fff; color: #fff; }
.xampp-strip .btn-outline-primary:hover { background: #fff !important; color: var(--indigo) !important; border-color: #fff !important; }
.ebook-cover { max-height: 300px; border-radius: 6px; box-shadow: 0 8px 22px rgba(79,91,147,.35); }
.stat-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; margin: 6px 0 16px; }
@media (max-width: 991px) { .stat-row { grid-template-columns: repeat(3, 1fr); } }
.stat { border: 1px solid var(--border); border-top: 4px solid var(--green); border-radius: 8px; text-align: center; padding: 10px 6px; background: var(--peri-tint2); }
.stat b { display: block; font-family: "Poppins", sans-serif; font-size: 26px; color: var(--indigo); line-height: 1.2; }
.stat span { font-size: 12.5px; color: var(--muted); }
.feature-box { display: flex; gap: 12px; padding: 12px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 14px; min-height: 150px; background: #fff; }
.feature-box .ic { flex: 0 0 46px; height: 46px; border-radius: 10px; background: var(--indigo); display: flex; align-items: center; justify-content: center; }
.feature-box .ic i { color: var(--green); font-size: 24px; }
.feature-box h6 { font-weight: 600; color: var(--indigo); margin-bottom: 4px; }
.feature-box p { font-size: 13.5px; color: var(--muted); margin: 0; }
.part-title { font-family: "Poppins", sans-serif; font-weight: 600; color: var(--indigo); font-size: 16px; padding: 6px 12px; background: var(--peri-tint); border-left: 4px solid var(--indigo); border-radius: 4px; margin: 8px 0 12px; }
.chapter-card { display: block; height: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 14px; background: #fff; color: var(--text); transition: .2s; border-top: 3px solid var(--peri); }
.chapter-card:hover { text-decoration: none; border-color: var(--peri); border-top-color: var(--green); box-shadow: 0 6px 16px rgba(79,91,147,.15); transform: translateY(-2px); color: var(--text); }
.chapter-card .chn { font-family: "Poppins", sans-serif; font-size: 12px; font-weight: 600; letter-spacing: 1.2px; color: var(--indigo); margin-bottom: 4px; }
.chapter-card .chn .pc { background: var(--green-tint); color: var(--green-dark); border-radius: 20px; padding: 1px 8px; letter-spacing: 0; font-weight: 600; }
.chapter-card h6 { font-weight: 600; color: var(--indigo-dark); margin-bottom: 6px; }
.chapter-card p { font-size: 13.5px; color: var(--muted); margin: 0; }
.expert { display: flex; gap: 24px; align-items: center; }
.expert-photo { width: 150px; height: 150px; border-radius: 50%; border: 6px solid var(--peri); box-shadow: 0 0 0 3px var(--green); object-fit: cover; flex: 0 0 auto; }
@media (max-width: 767px) { .expert { flex-direction: column; text-align: center; } }
.expert h4 { color: var(--muted); font-size: 16px; margin: 0; text-transform: uppercase; letter-spacing: 2px; }
.expert h3 { color: var(--indigo); font-weight: 700; margin: 4px 0; }
.hashtags span { display: inline-block; margin: 0 8px 6px 0; color: var(--indigo); background: var(--peri-tint); border-radius: 20px; padding: 2px 10px; font-size: 13.5px; }

/* ---- mock papers ---- */
.paper-bar { display: flex; flex-wrap: wrap; gap: 10px 22px; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--peri-tint2); font-size: 14px; }
.paper-bar i { color: var(--indigo); vertical-align: -2px; }

/* ---- previous / next ---- */
.chapter-nav { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 4px; }