/* ═════════════════════════════════════════════════════════════
   NARTON ATLAS — COURSE DETAIL (.cd-) & PROFILE (.pf-)
   Requires atlas-ui.css + browse.css.
═════════════════════════════════════════════════════════════ */

/* ═════════════════ COURSE HERO ═════════════════ */
.cd-hero { padding-bottom: clamp(4rem, 7vw, 5rem); border-bottom: 0; }
.cd-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
}

.cd-media { position: relative; }
.cd-media::before {   /* soft coloured halo behind the media */
  content: ''; position: absolute; inset: 8% -4% -6% 6%; z-index: -1;
  border-radius: 28px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--c) 35%, transparent), transparent 70%);
  filter: blur(30px);
}
.cd-player, .cd-thumb {
  position: relative; display: block; width: 100%;
  aspect-ratio: 16 / 9;
  border: 0; padding: 0;
  border-radius: 20px;
  overflow: hidden;
  background: var(--c-soft);
  box-shadow: 0 30px 60px -30px rgba(15,23,42,.45);
}
.cd-thumb { object-fit: cover; }
.cd-thumb--ph .ac-ph span, .cd-player .ac-ph span { font-size: 5rem; }
.cd-player { cursor: pointer; }
.cd-player img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease-out), filter .4s; }
.cd-player:hover img { transform: scale(1.04); filter: brightness(.85); }
.cd-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.cd-play {
  position: absolute; left: 50%; top: 50%;
  width: 78px; height: 78px; margin: -39px 0 0 -39px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 2.4rem; color: var(--c);
  background: rgba(255,255,255,.96);
  box-shadow: 0 14px 40px -10px rgba(0,0,0,.45);
  transition: transform .4s var(--ease-out);
}
.cd-play i { margin-left: 4px; }
.cd-play::after {
  content: ''; position: absolute; inset: -8px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.75);
  animation: apRipple 2.2s ease-out infinite;
}
.cd-player:hover .cd-play { transform: scale(1.1); }
.cd-play-label {
  position: absolute; left: 1rem; bottom: 1rem;
  font: 600 .78rem var(--font-body); color: #fff;
  background: rgba(15,23,42,.65); backdrop-filter: blur(6px);
  padding: .35rem .75rem; border-radius: 50px;
}
.cd-player.is-playing .cd-play,
.cd-player.is-playing .cd-play-label,
.cd-player.is-playing img { display: none; }

.cd-badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.cd-badge {
  font-size: .74rem; font-weight: 600;
  color: var(--c); background: var(--c-soft);
  padding: .28rem .7rem; border-radius: 50px;
  display: inline-flex; align-items: center; gap: .3rem;
}
.cd-badge--pick { background: #fef3c7; color: #92400e; }
.cd-badge--free { background: #dcfce7; color: #15803d; }

.cd-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 700; letter-spacing: -.02em; line-height: 1.12;
  color: var(--ink); margin: 0 0 .6rem;
}
.cd-byline {
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem;
  font-size: .95rem; color: var(--muted); margin-bottom: 1rem;
}
.cd-byline b { color: var(--c); font-weight: 600; }
.cd-short { font-size: 1.02rem; line-height: 1.7; color: #334155; margin-bottom: 1rem; max-width: 560px; }

.cd-rating-mini {
  display: inline-flex; align-items: center; gap: .45rem;
  font-size: .85rem; color: var(--muted) !important;
  margin-bottom: 1.4rem;
}
.cd-rating-mini b { color: var(--ink); }
.cd-rating-mini:hover { color: var(--ink) !important; }
.cd-stars { display: inline-flex; gap: .1rem; color: #f59e0b; }
.cd-stars--empty { color: #cbd5e1; }

.cd-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: 1rem; }
.cd-actions .ap-btn { padding: .85rem 1.35rem; font-size: .95rem; }
.cd-btn-yt { background: #dc2626; border-color: #dc2626; box-shadow: 0 10px 24px -12px rgba(220,38,38,.7); }
.cd-btn-yt:hover { box-shadow: 0 16px 30px -14px rgba(220,38,38,.8); }

.cd-save { display: flex; flex-wrap: wrap; gap: .5rem; }
.cd-save form { margin: 0; }
.cd-save-btn {
  display: inline-flex; align-items: center; gap: .45rem;
  font: 500 .85rem var(--font-body);
  color: var(--ink) !important;
  background: rgba(255,255,255,.85);
  border: 1px solid var(--border);
  padding: .55rem .95rem; border-radius: 10px;
  cursor: pointer;
  transition: border-color .2s, background .2s, color .2s, transform .2s var(--ease-out);
}
.cd-save-btn i { color: var(--c); font-size: 1rem; transition: transform .35s var(--ease-out); }
.cd-save-btn:hover { border-color: var(--c); transform: translateY(-1px); }
.cd-save-btn:hover i { transform: scale(1.15); }
.cd-save-btn.is-on { background: var(--c-soft); border-color: color-mix(in srgb, var(--c) 45%, transparent); color: var(--c) !important; font-weight: 600; }
.cd-save-btn--done i { color: #16a34a; }
.cd-save-btn--done.is-on { background: #dcfce7; border-color: #86efac; color: #15803d !important; }
.cd-save-btn.is-on i { animation: cdPop .5s var(--ease-out); }
@keyframes cdPop { 40% { transform: scale(1.4); } }

/* Facts strip (overlaps hero bottom) */
.cd-facts-wrap { position: relative; z-index: 2; margin-top: -2.75rem; }
.cd-facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 20px 50px -25px rgba(15,23,42,.25);
  overflow: hidden;
}
.cd-fact {
  position: relative;
  display: flex; flex-direction: column; gap: .15rem;
  padding: 1.15rem 1.25rem;
}
.cd-fact + .cd-fact::before {
  content: ''; position: absolute; left: 0; top: 22%; bottom: 22%;
  width: 1px; background: var(--border);
}
.cd-fact-icon {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 10px;
  background: var(--c-soft); color: var(--c);
  margin-bottom: .45rem;
}
.cd-fact-label { font-size: .72rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.cd-fact-value { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--ink); display: inline-flex; align-items: center; gap: .3rem; }
.cd-fact-value.is-yes { color: #15803d; }
.cd-fact-value.is-no  { color: var(--muted); font-weight: 600; }
.cd-meter { display: flex; gap: 3px; margin-top: .35rem; }
.cd-meter span { width: 18px; height: 5px; border-radius: 3px; background: var(--border); }
.cd-meter span.on { background: var(--c); }

/* ═════════════════ COURSE BODY ═════════════════ */
.cd-body { padding-top: clamp(2.25rem, 4vw, 3rem); }
.cd-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1.5rem;
  align-items: start;
}
.cd-main { display: flex; flex-direction: column; gap: 1.25rem; }
.cd-card {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  scroll-margin-top: 80px;
}
.cd-sticky { position: sticky; top: 84px; }
.cd-h2 {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 700;
  color: var(--ink); margin: 0 0 1rem;
}
.cd-h2 i { color: var(--c); font-size: 1.05rem; }
.cd-h2--sm { font-size: 1.05rem; }
.cd-prose { color: #334155; line-height: 1.8; font-size: .98rem; }
.cd-prose p:last-child { margin-bottom: 0; }

/* Ratings */
.cd-ratings {
  display: grid; grid-template-columns: 180px minmax(0, 1fr);
  gap: 1.5rem; align-items: center;
  padding-bottom: 1.25rem; margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.cd-score { display: flex; flex-direction: column; align-items: center; text-align: center; gap: .25rem; }
.cd-score-num { font-family: var(--font-display); font-size: 3rem; font-weight: 700; line-height: 1; color: var(--ink); }
.cd-score .cd-stars { font-size: 1.1rem; }
.cd-score-sub { font-size: .8rem; color: var(--muted); }
.cd-tutor { font-size: .76rem; color: var(--muted); margin-top: .35rem; }
.cd-dist { display: flex; flex-direction: column; gap: .4rem; }
.cd-dist-row { display: grid; grid-template-columns: 36px 1fr 28px; align-items: center; gap: .6rem; font-size: .8rem; color: var(--muted); }
.cd-dist-row i { color: #f59e0b; font-size: .7rem; }
.cd-dist-bar { height: 8px; border-radius: 8px; background: var(--bg); overflow: hidden; }
.cd-dist-bar span {
  display: block; height: 100%; width: var(--w); border-radius: inherit;
  background: linear-gradient(90deg, #fbbf24, #f59e0b);
  transform-origin: left;
  transition: transform 1s var(--ease-out) .2s;
}
html.js .cd-card.reveal:not(.is-visible) .cd-dist-bar span { transform: scaleX(0); }
.cd-dist-n { text-align: right; font-variant-numeric: tabular-nums; }

.cd-rate { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; margin: 0; }
.cd-rate-label { font-weight: 600; font-size: .92rem; color: var(--ink); }
.cd-rate-stars { display: inline-flex; gap: .15rem; }
.cd-rate-star {
  border: 0; background: transparent; padding: .1rem;
  font-size: 1.7rem; line-height: 1; color: #e2e8f0;
  cursor: pointer;
  transition: color .15s, transform .25s var(--ease-out);
}
.cd-rate-star.is-on, .cd-rate-star.is-hover { color: #f59e0b; }
.cd-rate-star:hover { transform: scale(1.18) rotate(-8deg); }
.cd-rate-star:focus-visible { outline: 2px solid var(--c); outline-offset: 2px; border-radius: 6px; }
.cd-rate-stars.is-previewing .cd-rate-star.is-on:not(.is-hover) { color: #e2e8f0; }
.cd-rate-hint { font-size: .82rem; color: var(--muted); min-width: 90px; }
.cd-rate-remove {
  border: 0; background: none; padding: 0;
  font-size: .8rem; color: var(--muted); text-decoration: underline;
  cursor: pointer;
}
.cd-rate-remove:hover { color: #dc2626; }
.cd-login { margin: 0; font-size: .9rem; color: var(--muted); }
.cd-login a { color: var(--c) !important; font-weight: 600; }

.cd-mirrors { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .4rem; }
.cd-mirrors a {
  display: flex; align-items: center; gap: .55rem;
  font-size: .88rem; color: var(--c) !important; word-break: break-all;
  padding: .55rem .75rem; border-radius: 10px; background: var(--bg);
  transition: background .2s;
}
.cd-mirrors a:hover { background: var(--c-soft); }

/* Sidebar */
.cd-topics { list-style: none; padding: 0; margin: 0 0 1rem; display: flex; flex-direction: column; gap: .45rem; }
.cd-topics a {
  display: flex; align-items: center; gap: .75rem;
  padding: .65rem .75rem; border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--ink) !important;
  transition: border-color .2s, background .2s, transform .25s var(--ease-out);
}
.cd-topics a:hover { border-color: var(--c); background: var(--c-soft); transform: translateX(3px); }
.cd-topics a > span:nth-child(2) { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.cd-topics b { font-size: .9rem; font-weight: 600; }
.cd-topics small { font-size: .75rem; color: var(--muted); }
.cd-topics .bi-chevron-right { color: var(--muted); font-size: .8rem; }
.cd-topic-icon {
  display: grid; place-items: center; flex-shrink: 0;
  width: 34px; height: 34px; border-radius: 10px;
  background: var(--c-soft); color: var(--c);
}
.cd-credit { font-size: .85rem; color: var(--muted); margin: 0 0 1rem; }
.cd-credit i { color: #e11d48; margin-right: .2rem; }
.cd-credit b { color: var(--ink); }
.cd-share { display: flex; flex-direction: column; align-items: flex-start; gap: .65rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.cd-suggest-link { font-size: .82rem; color: var(--muted) !important; }
.cd-suggest-link:hover { color: var(--c) !important; text-decoration: underline !important; }
[data-copy-link].is-copied { border-color: #16a34a !important; color: #15803d !important; }

/* ═════════════════ PROFILE ═════════════════ */
.pf-hero { padding-bottom: clamp(2rem, 4vw, 2.75rem); }
.pf-head { display: flex; align-items: center; gap: 1.5rem; margin: .5rem 0 1.75rem; }
.pf-avatar { position: relative; width: 112px; height: 112px; flex-shrink: 0; }
.pf-ring { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.pf-ring circle { fill: none; stroke-width: 6; }
.pf-ring-bg { stroke: color-mix(in srgb, var(--c) 14%, transparent); }
.pf-ring-fg {
  stroke: #16a34a; stroke-linecap: round;
  stroke-dasharray: 339.3;
  stroke-dashoffset: calc(339.3 - 339.3 * var(--p) / 100);
  animation: pfRing 1.4s var(--ease-out) both .3s;
}
@keyframes pfRing { from { stroke-dashoffset: 339.3; } }
.pf-initial {
  position: absolute; inset: 12px;
  display: grid; place-items: center; border-radius: 50%;
  font: 700 2.4rem var(--font-display); color: #fff;
  background: linear-gradient(140deg, #4b78f0, var(--blue) 55%, var(--blue-dark));
  box-shadow: 0 14px 30px -12px rgba(26,78,216,.6);
}
.pf-who .ap-title { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-bottom: .35rem; }
.pf-tutor {
  display: inline-flex; align-items: center; gap: .35rem;
  font: 600 .8rem var(--font-body); letter-spacing: 0;
  color: #92400e; background: #fef3c7;
  padding: .3rem .7rem; border-radius: 50px;
}
.pf-since { margin: 0; color: var(--muted); font-size: .92rem; }
.pf-since b { color: #15803d; }

.pf-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; }
.pf-stat {
  --s: var(--c);
  display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto;
  column-gap: .8rem; align-items: center;
  padding: 1rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--ink) !important;
  transition: transform .3s var(--ease-out), border-color .25s, box-shadow .25s;
}
.pf-stat:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--s) 45%, transparent); box-shadow: 0 14px 30px -20px color-mix(in srgb, var(--s) 70%, transparent); }
.pf-stat-icon {
  grid-row: span 2;
  display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: 13px;
  font-size: 1.2rem;
  color: var(--s); background: color-mix(in srgb, var(--s) 12%, #fff);
}
.pf-stat b { font: 700 1.5rem var(--font-display); line-height: 1.1; }
.pf-stat small { font-size: .78rem; color: var(--muted); }
.pf-stat--done { --s: #16a34a; }
.pf-stat--rate { --s: #d97706; }
.pf-stat--sugg { --s: #7c3aed; }

.pf-tabs {
  position: relative;
  display: inline-flex; gap: .25rem;
  padding: .3rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 1.75rem;
  max-width: 100%;
  overflow-x: auto; scrollbar-width: none;
}
.pf-tabs::-webkit-scrollbar { display: none; }
.pf-tabs-pill {
  position: absolute; top: .3rem; bottom: .3rem; left: 0; width: 0;
  background: var(--ink); border-radius: 10px;
  transition: transform .45s var(--ease-out), width .45s var(--ease-out);
}
.pf-tab {
  position: relative; z-index: 1;
  display: inline-flex; align-items: center; gap: .45rem;
  border: 0; background: transparent;
  font: 500 .88rem var(--font-body); color: var(--muted);
  padding: .55rem 1rem; border-radius: 10px;
  white-space: nowrap; cursor: pointer;
  transition: color .3s;
}
.pf-tab span {
  font-size: .72rem; font-weight: 600;
  background: var(--bg); color: var(--muted);
  padding: .05rem .45rem; border-radius: 50px;
  transition: background .3s, color .3s;
}
.pf-tab:hover { color: var(--ink); }
.pf-tab.is-active { color: #fff; }
.pf-tab.is-active span { background: rgba(255,255,255,.2); color: #fff; }
.pf-tab:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.pf-panel[hidden] { display: none; }
.pf-panel.is-active { animation: hpIn .5s var(--ease-out) both; }

.pf-item { display: flex; flex-direction: column; gap: .5rem; }
.pf-item .ac-card { flex: 1; }
.pf-item-actions { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.pf-item-actions form { margin: 0; }
.pf-item-actions form:first-child:last-child { margin-left: auto; }
.pf-act {
  display: inline-flex; align-items: center; gap: .35rem;
  font: 500 .8rem var(--font-body); color: var(--muted);
  background: var(--paper); border: 1px solid var(--border);
  padding: .4rem .75rem; border-radius: 9px;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.pf-act:hover { color: #dc2626; border-color: #fecaca; background: #fef2f2; }
.pf-act--done { color: #15803d; }
.pf-act--done:hover { color: #fff; background: #16a34a; border-color: #16a34a; }
.pf-item--done .ac-card { border-color: #bbf7d0; }
.pf-done-date { font-size: .8rem; font-weight: 500; color: #15803d; display: inline-flex; align-items: center; gap: .35rem; }

.pf-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .5rem; }
.pf-row {
  display: flex; align-items: center; gap: 1rem;
  padding: .9rem 1.1rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--ink) !important;
  transition: border-color .2s, transform .25s var(--ease-out);
}
.pf-row:hover { border-color: var(--c); transform: translateX(3px); }
.pf-row-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.pf-row-main b { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-row-main small { font-size: .78rem; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pf-row-go { color: var(--muted); }
.pf-status { font-size: .74rem; font-weight: 600; padding: .25rem .65rem; border-radius: 50px; white-space: nowrap; }
.pf-status--pending  { background: #fef3c7; color: #92400e; }
.pf-status--added    { background: #dcfce7; color: #15803d; }
.pf-status--rejected { background: #f1f5f9; color: #64748b; }
.pf-suggest-after { margin-top: 1.25rem; }

/* ═════════════════ RESPONSIVE ═════════════════ */
@media (max-width: 991.98px) {
  .cd-hero-grid { grid-template-columns: 1fr; }
  .cd-layout { grid-template-columns: 1fr; }
  .cd-sticky { position: static; }
  .pf-stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 575.98px) {
  .cd-facts { grid-template-columns: repeat(2, 1fr); }
  .cd-fact:nth-child(odd)::before { display: none; }
  .cd-fact:nth-child(n+3) { border-top: 1px solid var(--border); }
  .cd-ratings { grid-template-columns: 1fr; }
  .cd-actions .ap-btn { flex: 1; }
  .pf-head { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .pf-avatar { width: 88px; height: 88px; }
  .pf-initial { inset: 10px; font-size: 1.9rem; }
}