/* course.css — editorial course player styles, scoped under .course-root
   Adapted from landing/course/course.css. */

.course-root {
  --p-bg:           #FAF6EF;
  --p-bg-soft:      #F2EADD;
  --p-bg-deep:      #EADFCA;
  --p-card:         #FFFFFF;
  --p-ink:          #1A1410;
  --p-ink-soft:     #5C4F44;
  --p-ink-mute:     #8A7B6D;
  --p-line:         #E4DCCD;
  --p-line-strong:  #C9B79B;

  --creator-accent:      #C75B3F;
  --creator-accent-deep: #9A3E28;
  --creator-accent-tint: #F4E4DC;
  --creator-accent-ink:  #3D1E15;

  --p-serif: "Fraunces", "Newsreader", Georgia, serif;
  --p-sans:  "Inter", system-ui, sans-serif;
  --p-mono:  "JetBrains Mono", ui-monospace, monospace;

  --p-r-sm: 10px;
  --p-r-md: 16px;
  --p-r-lg: 24px;
  --p-r-pill: 999px;

  --c-video-bg: #0D0907;
  --c-sidebar-w: 360px;

  min-height: 100vh;
  background: var(--p-bg);
  color: var(--p-ink);
  font-family: var(--p-sans);
}
body:has(.course-root) { background: var(--p-bg); }
.course-root *, .course-root *::before, .course-root *::after { box-sizing: border-box; }

/* ============ TOP BAR ============ */
.cbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px 32px;
  background: var(--p-bg);
  border-bottom: 1px solid var(--p-line);
  position: sticky; top: 0; z-index: 30;
}
.cbar-back {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--p-ink-soft); text-decoration: none;
  font-size: 13px; font-weight: 500;
  padding: 8px 12px; border-radius: var(--p-r-pill);
  transition: background 0.15s, color 0.15s;
}
.cbar-back:hover { background: var(--p-bg-soft); color: var(--p-ink); }
.cbar-title {
  display: flex; align-items: baseline; gap: 10px;
  min-width: 0;
}
.cbar-title-crumb {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--p-ink-mute); font-weight: 500;
}
.cbar-title-main {
  font-family: var(--p-serif); font-weight: 500; font-size: 17px;
  letter-spacing: -0.3px; color: var(--p-ink);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cbar-right { display: flex; align-items: center; gap: 14px; }
.cbar-progress {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 14px 7px 12px; border-radius: var(--p-r-pill);
  background: var(--p-bg-soft); border: 1px solid var(--p-line);
  font-size: 12px; color: var(--p-ink-soft);
}
.cbar-progress-ring {
  width: 22px; height: 22px;
  flex-shrink: 0;
}
.cbar-progress strong {
  color: var(--p-ink); font-weight: 600; font-family: var(--p-serif);
  font-size: 14px;
}
.cbar-user-avatar {
  width: 34px; height: 34px; border-radius: var(--p-r-pill);
  background: var(--p-bg-deep); color: var(--p-ink);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; letter-spacing: 0.3px;
}
.cbar-lessons-btn {
  display: none;
  align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: var(--p-r-pill);
  background: var(--p-ink); color: var(--p-bg);
  border: none; cursor: pointer; font-size: 13px; font-weight: 500;
  font-family: inherit;
}

/* ============ LAYOUT ============ */
.cgrid {
  display: grid;
  grid-template-columns: 1fr var(--c-sidebar-w);
  min-height: calc(100vh - 63px);
}
.cmain {
  overflow-x: hidden;
  min-width: 0;
}
.csidebar {
  border-left: 1px solid var(--p-line);
  background: var(--p-bg-soft);
  position: sticky; top: 63px;
  height: calc(100vh - 63px);
  overflow-y: auto;
  display: flex; flex-direction: column;
}

/* ============ VIDEO ============ */
.cvideo {
  background: var(--c-video-bg);
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.cvideo iframe, .cvideo video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  border: 0; display: block;
}
.cvideo-empty {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 12px; color: rgba(255,255,255,0.6);
  background:
    radial-gradient(ellipse at 30% 30%, rgba(199, 91, 63, 0.25), transparent 55%),
    radial-gradient(ellipse at 70% 70%, rgba(122, 140, 107, 0.18), transparent 55%),
    linear-gradient(180deg, #1F1612 0%, #0D0907 100%);
  font-size: 13px; letter-spacing: 0.3px;
}
.cvideo-empty svg { opacity: 0.7; }

/* ============ LESSON META ============ */
.clesson-meta {
  padding: 36px 44px 24px;
  max-width: 860px;
}
.clesson-meta-crumb {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--p-ink-mute); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.clesson-meta-crumb .dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--p-ink-mute); opacity: 0.5;
}
.clesson-title {
  font-family: var(--p-serif); font-weight: 400; font-size: 42px;
  letter-spacing: -1.2px; line-height: 1.1; margin: 0 0 14px;
  color: var(--p-ink);
}
.clesson-title em { font-style: italic; color: var(--creator-accent); }
.clesson-meta-row {
  display: flex; align-items: center; gap: 18px;
  font-size: 13px; color: var(--p-ink-soft);
  margin-bottom: 24px; flex-wrap: wrap;
}
.clesson-meta-row .dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--p-ink-mute); opacity: 0.5;
}
.clesson-meta-row strong { color: var(--p-ink); font-weight: 500; }
.clesson-desc {
  font-family: var(--p-serif); font-size: 18px; line-height: 1.55;
  color: var(--p-ink-soft); margin: 0 0 24px;
  max-width: 640px;
}

/* Action bar */
.clesson-actions {
  display: flex; align-items: center; gap: 14px;
  padding: 20px 0 8px;
  border-top: 1px solid var(--p-line);
  flex-wrap: wrap;
}
.cbtn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--p-r-pill);
  font-family: inherit; font-size: 13.5px; font-weight: 500;
  border: 1px solid var(--p-line-strong);
  background: transparent; color: var(--p-ink);
  cursor: pointer; text-decoration: none;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.cbtn:hover { background: var(--p-bg-soft); }
.cbtn:active { transform: translateY(1px); }
.cbtn-primary {
  background: var(--p-ink); color: var(--p-bg);
  border-color: var(--p-ink);
}
.cbtn-primary:hover { background: #2D2218; color: var(--p-bg); }
.cbtn-complete {
  background: var(--creator-accent); color: #fff;
  border-color: var(--creator-accent);
}
.cbtn-complete:hover { background: var(--creator-accent-deep); border-color: var(--creator-accent-deep); color: #fff; }
.cbtn-complete.is-complete {
  background: transparent; color: var(--creator-accent);
  border: 1px solid var(--creator-accent);
}
.cbtn-spacer { flex: 1; }

/* ============ CONTENT BLOCKS ============ */
.ccontent {
  padding: 8px 44px 40px;
  max-width: 740px;
}
.cblock { margin-bottom: 36px; }
.cblock-eyebrow {
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--p-ink-mute); margin-bottom: 14px; font-weight: 500;
}
.cblock-text, .cblock-body {
  font-size: 16.5px; line-height: 1.7;
  color: var(--p-ink-soft);
  font-family: var(--p-serif); font-weight: 400;
  letter-spacing: -0.1px;
  white-space: pre-wrap;
}
.cblock-text p, .cblock-body p { margin: 0 0 14px; }
.cblock-text strong, .cblock-body strong { color: var(--p-ink); font-weight: 500; }
.cblock-text em, .cblock-body em { color: var(--creator-accent-deep); }

.cblock-image {
  border-radius: var(--p-r-md);
  overflow: hidden;
  border: 1px solid var(--p-line);
  background: var(--p-bg-soft);
  display: block;
}
.cblock-image img { width: 100%; height: auto; display: block; }

.cblock-video {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--p-r-md);
  overflow: hidden;
  position: relative;
}
.cblock-video iframe, .cblock-video video {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
}

/* ============ NEXT UP ============ */
.cnextup {
  margin: 24px 44px 48px;
  max-width: 740px;
  background: var(--p-ink); color: var(--p-bg);
  border-radius: var(--p-r-lg);
  padding: 30px 36px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  position: relative; overflow: hidden;
}
.cnextup::before {
  content: ''; position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: var(--creator-accent);
  opacity: 0.2;
}
.cnextup-body { position: relative; z-index: 1; }
.cnextup-eyebrow {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: rgba(246,239,230,0.6); margin-bottom: 10px;
}
.cnextup-title {
  font-family: var(--p-serif); font-weight: 500; font-size: 26px;
  letter-spacing: -0.5px; line-height: 1.2; margin: 0 0 6px;
  color: var(--p-bg);
}
.cnextup-meta {
  font-size: 13px; color: rgba(246,239,230,0.65);
}
.cnextup-cta { position: relative; z-index: 1; }
.cnextup .cbtn-primary {
  background: var(--p-bg); color: var(--p-ink);
  border-color: var(--p-bg);
  padding: 12px 22px;
}
.cnextup .cbtn-primary:hover { background: #fff; color: var(--p-ink); }

.cnextup.end { background: var(--creator-accent); }
.cnextup.end::before { background: var(--p-ink); opacity: 0.25; }
.cnextup.end .cnextup-eyebrow { color: rgba(255,255,255,0.8); }
.cnextup.end .cnextup-title,
.cnextup.end .cnextup-meta { color: #fff; }

/* ============ SIDEBAR ============ */
.csidebar-head {
  padding: 26px 24px 20px;
  border-bottom: 1px solid var(--p-line);
  background: var(--p-bg);
  position: relative;
}
.csidebar-course-eyebrow {
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--p-ink-mute); margin-bottom: 10px;
  display: flex; justify-content: space-between; align-items: center;
}
.csidebar-course-title {
  font-family: var(--p-serif); font-weight: 500; font-size: 19px;
  letter-spacing: -0.3px; line-height: 1.25; margin: 0 0 16px;
  color: var(--p-ink);
}
.csidebar-course-title em { font-style: italic; color: var(--creator-accent); }
.csidebar-progress-row {
  display: flex; align-items: baseline; gap: 8px;
  margin-bottom: 8px;
}
.csidebar-progress-count {
  font-family: var(--p-serif); font-weight: 500; font-size: 20px;
  letter-spacing: -0.3px; color: var(--p-ink);
}
.csidebar-progress-count em { font-style: italic; color: var(--creator-accent); }
.csidebar-progress-total {
  font-size: 13px; color: var(--p-ink-mute);
}
.csidebar-progress-label {
  font-size: 11px; color: var(--p-ink-mute); margin-left: auto;
  font-family: var(--p-mono);
}
.csidebar-progress-bar {
  height: 3px; background: var(--p-line); border-radius: 2px;
  overflow: hidden;
}
.csidebar-progress-bar div {
  height: 100%; background: var(--creator-accent);
  border-radius: 2px; transition: width 0.4s ease;
}
.csidebar-close {
  display: none;
  position: absolute; top: 18px; right: 18px;
  background: var(--p-bg-soft); border: none;
  width: 36px; height: 36px; border-radius: 50%;
  align-items: center; justify-content: center;
  cursor: pointer; color: var(--p-ink);
}

.csidebar-modules {
  padding: 8px 0 40px;
  flex: 1;
}
.cmodule { border-bottom: 1px solid var(--p-line); }
.cmodule:last-child { border-bottom: none; }
.cmodule-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 16px 24px;
  background: transparent;
  width: 100%; text-align: left;
}
.cmodule-head-num {
  font-family: var(--p-mono); font-size: 10.5px;
  color: var(--p-ink-mute); letter-spacing: 1px;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--p-bg); border: 1px solid var(--p-line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.cmodule-head-num.complete {
  background: var(--creator-accent);
  border-color: var(--creator-accent);
  color: #fff;
}
.cmodule-head-body { min-width: 0; }
.cmodule-head-title {
  font-family: var(--p-serif); font-weight: 500; font-size: 15px;
  letter-spacing: -0.2px; color: var(--p-ink); line-height: 1.3;
}
.cmodule-head-meta {
  font-size: 11px; color: var(--p-ink-mute);
  margin-top: 3px; font-family: var(--p-mono); letter-spacing: 0.3px;
}
.cmodule-lessons { padding: 0 0 14px; }

.clesson-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px 24px 10px 64px;
  color: inherit; text-decoration: none;
  position: relative;
  transition: background 0.15s;
}
.clesson-item:hover { background: var(--p-bg); }
.clesson-item.active { background: var(--p-bg); }
.clesson-item.active::before {
  content: ''; position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px; background: var(--creator-accent);
  border-radius: 0 2px 2px 0;
}
.clesson-item-check {
  width: 18px; height: 18px; border-radius: 50%;
  border: 1.5px solid var(--p-line-strong);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  background: var(--p-bg);
  color: transparent;
  transition: all 0.2s;
}
.clesson-item.complete .clesson-item-check {
  background: var(--creator-accent);
  border-color: var(--creator-accent);
  color: #fff;
}
.clesson-item-body { min-width: 0; }
.clesson-item-title {
  font-size: 13.5px; font-weight: 500;
  color: var(--p-ink); line-height: 1.35;
}
.clesson-item.complete .clesson-item-title {
  color: var(--p-ink-soft); text-decoration: line-through;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(138, 123, 109, 0.4);
}
.clesson-item-meta {
  font-size: 11px; color: var(--p-ink-mute);
  font-family: var(--p-mono); letter-spacing: 0.3px;
  margin-top: 2px;
  display: flex; align-items: center; gap: 8px;
}

/* ============ EMPTY ============ */
.cempty {
  padding: 80px 32px;
  text-align: center;
  color: var(--p-ink-mute);
}
.cempty h2 {
  font-family: var(--p-serif); font-weight: 400; font-size: 28px;
  color: var(--p-ink); margin: 0 0 8px;
}
.cempty p { margin: 0 0 18px; }

/* ============ MOBILE ============ */
@media (max-width: 960px) {
  .course-root { --c-sidebar-w: 320px; }
  .clesson-meta { padding: 28px 28px 20px; }
  .ccontent { padding: 8px 28px 32px; }
  .cnextup { margin: 20px 28px 36px; padding: 26px 28px; }
  .clesson-title { font-size: 34px; }
}

@media (max-width: 720px) {
  .cbar {
    padding: 12px 16px;
    grid-template-columns: auto 1fr auto;
    gap: 10px;
  }
  .cbar-back { padding: 6px 10px; font-size: 12px; }
  .cbar-back span { display: none; }
  .cbar-title { display: none; }
  .cbar-progress { padding: 6px 12px; font-size: 11px; }
  .cbar-user-avatar { display: none; }
  .cbar-lessons-btn { display: inline-flex; }

  .cgrid { grid-template-columns: 1fr; }
  .csidebar {
    position: fixed; inset: 63px 0 0 0;
    height: calc(100vh - 63px);
    z-index: 50;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-left: none;
    background: var(--p-bg);
  }
  .csidebar.open { transform: translateX(0); box-shadow: -20px 0 40px rgba(0,0,0,0.2); }
  .csidebar-close { display: flex; }

  .clesson-meta { padding: 24px 20px 16px; }
  .clesson-title { font-size: 28px; letter-spacing: -0.8px; line-height: 1.15; }
  .clesson-meta-row { flex-wrap: wrap; gap: 6px 12px; font-size: 12.5px; }
  .clesson-actions { gap: 10px; padding-top: 16px; }
  .cbtn-spacer { display: none; }
  .cbtn-complete { flex: 1; justify-content: center; }

  .ccontent { padding: 8px 20px 24px; }
  .cblock { margin-bottom: 28px; }

  .cnextup {
    margin: 16px 20px 32px;
    grid-template-columns: 1fr;
    padding: 24px 24px 28px;
    gap: 18px;
  }
  .cnextup-title { font-size: 22px; }
  .cnextup-cta { display: flex; }
  .cnextup-cta .cbtn { flex: 1; justify-content: center; }

  .clesson-item { padding: 10px 20px 10px 56px; }
}