/* ==========================================================================
   black-friday.css — "Black Friday, feature-led" page visuals.
   Fig. 01 discount → experience creative (.bf-shift) · Fig. 02 surface map
   phones (.bf-surf) · Fig. 03 campaign beats (.bf-beats).
   Colours: tokens only, except inside .phone__screen.
   ========================================================================== */

.bf-illus {
  display: inline-flex; align-items: center; gap: .45rem; padding: .35rem .6rem; border-radius: 6px;
  border: 1px dashed var(--line-strong); background: var(--surface); color: var(--muted);
}

/* ---------- Fig. 01 · from discount to experience ---------- */
.bf-shift { display: grid; gap: 1.5rem; }
.bf-shift__top, .bf-surf__top { display: flex; flex-wrap: wrap; gap: .75rem 1rem; justify-content: space-between; align-items: center; }
.bf-shift__body { display: grid; gap: 1.5rem; align-items: start; }
@media (min-width: 900px) { .bf-shift__body { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(28px, 4vw, 56px); } }

.bf-ad {
  position: relative; display: grid; gap: 1rem; padding: clamp(20px, 3vw, 32px);
  background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
.bf-ad__kicker { color: var(--signal-ink); }
.bf-ad__head { font: 400 clamp(1.8rem, 3.6vw, 2.7rem)/1.02 var(--font-serif); letter-spacing: -.025em; color: var(--ink); min-height: 2.04em; }
.bf-ad__head em { font-family: var(--font-serif); }

.bf-ad__visual {
  position: relative; display: grid; grid-template-columns: minmax(0, 1fr); align-items: center;
  min-height: 150px; padding: 1rem; border-radius: var(--radius-sm); background: var(--paper-2);
}
@media (min-width: 520px) { .bf-ad__visual { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1rem; } }
.bf-tm { width: 100%; max-width: 210px; color: var(--ink); justify-self: center; }
.bf-tag {
  position: absolute; top: 14px; left: 14px; padding: .45rem .75rem; border-radius: 4px;
  background: var(--ink); color: var(--paper); font: 600 .8rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase;
  transform: rotate(-6deg); transition: opacity .5s var(--ease-out), transform .6s var(--ease-out);
}
.bf-bundle { display: grid; gap: 6px; align-content: center; }
.bf-bundle__i {
  justify-self: start; padding: .4rem .7rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--line-strong);
  font: 500 .74rem/1.2 var(--font-mono); letter-spacing: .03em; color: var(--ink);
  transition: opacity .5s var(--ease-out), transform .6s var(--ease-out); transition-delay: calc(var(--k, 0) * 80ms);
}
.bf-bundle__i:nth-child(1) { --k: 0; } .bf-bundle__i:nth-child(2) { --k: 1; }
.bf-bundle__i:nth-child(3) { --k: 2; } .bf-bundle__i:nth-child(4) { --k: 3; border-color: var(--signal); color: var(--signal-ink); }

.bf-proof { display: grid; }
.bf-proof > * { grid-area: 1 / 1; transition: opacity .5s var(--ease-out); }
.bf-proof__urgency { align-self: center; font: 500 .8rem/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.bf-proof__story { display: grid; gap: .45rem; padding: .8rem 1rem; border-left: 2px solid var(--signal); background: var(--signal-soft); border-radius: 0 6px 6px 0; }
.bf-proof__story .mono { color: var(--signal-ink); }
.bf-skel { display: block; height: 8px; width: var(--w); border-radius: 99px; background: color-mix(in srgb, var(--ink) 16%, transparent); }
.bf-ad__cta {
  justify-self: start; display: inline-flex; align-items: center; height: 44px; padding: 0 1.2rem; border-radius: 999px;
  background: var(--ink); color: var(--paper); font: 500 .9rem/1 var(--font-sans);
}

/* mode states */
.bf-shift[data-mode="discount"] .bf-bundle__i { opacity: 0; transform: translateX(-10px); }
.bf-shift[data-mode="discount"] .bf-proof__story { opacity: 0; visibility: hidden; }
.bf-shift[data-mode="feature"] .bf-tag { opacity: 0; transform: rotate(-6deg) scale(.8); }
.bf-shift[data-mode="feature"] .bf-proof__urgency { opacity: 0; visibility: hidden; }
.bf-shift[data-mode="discount"] .bf-ad__kicker { color: var(--muted); }

.bf-diff { display: grid; gap: 1rem; }
.bf-diff__list { display: grid; margin: 0; border-top: 1px solid var(--line-strong); }
.bf-diff__list > div { display: grid; grid-template-columns: 6.5rem 1fr; gap: .75rem; padding: .85rem 0; border-bottom: 1px solid var(--line); }
.bf-diff__list dt { font: 500 var(--fs-mono)/1.6 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.bf-diff__list dd { display: grid; gap: .15rem; font-size: .95rem; line-height: 1.4; }
.bf-diff__list s { color: var(--muted); text-decoration-color: var(--before); transition: color .4s; }
.bf-diff__list b { font-weight: 500; color: var(--ink); transition: opacity .45s var(--ease-out), transform .55s var(--ease-out); }
.bf-diff__list b::before { content: "→ "; color: var(--signal-ink); }
.bf-shift[data-mode="discount"] .bf-diff__list s { text-decoration: none; color: var(--ink); }
.bf-shift[data-mode="discount"] .bf-diff__list b { opacity: 0; transform: translateY(-4px); }

/* ---------- Fig. 02 · surface map ---------- */
.bf-surf { display: grid; gap: 1.5rem; }
.bf-surf__row { display: grid; gap: 2rem; }
.bf-surf__item { display: grid; gap: 1rem; justify-items: center; align-content: start; }
.bf-phone { width: min(100%, 260px); }
.bf-surf__cap { max-width: 26ch; text-align: center; font-size: .92rem; color: var(--ink-2); line-height: 1.45; }
.bf-surf__cap b { display: block; font: 500 var(--fs-mono)/1.6 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--signal-ink); }
@media (max-width: 899px) {
  .bf-surf__item { display: none; }
  .bf-surf[data-active="paywall"] [data-surf-item="paywall"],
  .bf-surf[data-active="push"] [data-surf-item="push"],
  .bf-surf[data-active="home"] [data-surf-item="home"] { display: grid; animation: bf-in .6s var(--ease-out); }
}
@media (min-width: 900px) {
  .bf-surf__tabs { display: none; }
  .bf-surf__row { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2vw, 32px); }
  .bf-phone { width: min(100%, 240px); }
}
@keyframes bf-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* phone UIs — hard-coded colours allowed inside .phone__screen */
.bfp { position: absolute; inset: 0; display: flex; flex-direction: column; padding: 46px 16px 18px; font-family: var(--font-sans); font-size: 12px; }
.bfp__badge {
  align-self: flex-start; padding: 5px 8px; border-radius: 999px; background: #ef4f16; color: #fff;
  font: 600 9px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase;
}
.bfp__badge--light { background: #15140f; color: #f4f1ea; }

.bfp--pay { gap: 10px; background: radial-gradient(120% 60% at 50% 0%, #2a1a12 0%, #121210 60%); }
.bfp__x { position: absolute; top: 40px; right: 16px; font-size: 18px; color: rgba(239,235,226,.5); }
.bfp__title { font: 400 25px/1.05 var(--font-serif); letter-spacing: -.02em; color: #efebe2; margin-top: 4px; }
.bfp__feats { display: grid; gap: 8px; margin: 4px 0 0; }
.bfp__feats li { display: grid; gap: 1px; padding: 8px 10px 8px 28px; position: relative; border-radius: 10px; background: rgba(239,235,226,.06); }
.bfp__feats li::before { content: "✓"; position: absolute; left: 10px; top: 8px; color: #ff6a33; font-weight: 700; }
.bfp__feats b { font-size: 12px; color: #efebe2; font-weight: 600; }
.bfp__feats span { font-size: 10.5px; color: rgba(239,235,226,.6); line-height: 1.35; }
.bfp__bundle { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding: 10px 12px; border-radius: 10px; box-shadow: inset 0 0 0 1.5px #ff6a33; color: #efebe2; font-size: 11px; }
.bfp__bundle span:last-child { font: 500 9px/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: #ff8a5c; }
.bfp__cta { display: grid; place-items: center; height: 40px; border-radius: 999px; background: #ef4f16; color: #fff; font-weight: 600; font-size: 12.5px; }
.bfp__fine { text-align: center; font-size: 9.5px; color: rgba(239,235,226,.45); }

.bfp--lock { align-items: center; padding-top: 52px; background: linear-gradient(170deg, #2b2a25 0%, #121210 55%, #23140d 100%); color: #efebe2; }
.bfp__day { font-size: 12px; font-weight: 500; color: rgba(239,235,226,.75); }
.bfp__time { font: 300 58px/1 var(--font-sans); letter-spacing: -.03em; margin-top: 2px; }
.bfp__notif {
  width: 100%; margin-top: 28px; padding: 10px 12px 12px; border-radius: 16px;
  background: rgba(239,235,226,.14); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.bfp__notif b { display: block; margin-top: 6px; font-size: 12px; font-weight: 600; }
.bfp__notif p { margin-top: 2px; font-size: 11px; line-height: 1.35; color: rgba(239,235,226,.8); }
.bfp__nhead { display: flex; align-items: center; gap: 6px; font-size: 9.5px; letter-spacing: .04em; text-transform: uppercase; color: rgba(239,235,226,.6); }
.bfp__nhead span:last-child { margin-left: auto; text-transform: none; }
.bfp__app { width: 18px; height: 18px; border-radius: 5px; display: grid; place-items: center; background: #ef4f16; color: #fff; font: 700 10px/1 var(--font-sans); }
.bfp__notif--ghost { margin-top: 8px; height: 46px; width: 92%; opacity: .45; }

.bfp--home { gap: 10px; color: #15140f; }
.bfp__hello { font: 500 9.5px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: #6c685f; }
.bfp__h { font: 400 23px/1.05 var(--font-serif); letter-spacing: -.02em; }
.bfp__streak { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border-radius: 12px; background: #fff; box-shadow: 0 0 0 1px rgba(21,20,15,.08); font-weight: 600; font-size: 11.5px; }
.bfp__dots { display: flex; gap: 3px; }
.bfp__dots i { width: 8px; height: 8px; border-radius: 50%; background: #15140f; }
.bfp__dots i.off { background: #e2ddd2; }
.bfp__banner { display: grid; gap: 6px; padding: 12px; border-radius: 14px; background: #ffe7dc; box-shadow: inset 0 0 0 1.5px #ef4f16; }
.bfp__banner b { font: 400 18px/1.1 var(--font-serif); letter-spacing: -.01em; }
.bfp__banner span:last-child { font-size: 10.5px; font-weight: 600; color: #c63d0b; }
.bfp__tile { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding: 14px; border-radius: 14px; background: #15140f; color: #f4f1ea; font-weight: 600; }
.bfp__play { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: #f4f1ea; color: #15140f; font-size: 10px; }

/* ---------- Fig. 03 · campaign beats ---------- */
.bf-beats { display: grid; gap: 1.25rem; }
.bf-beats__legend { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; font: 500 var(--fs-mono)/1.4 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.bf-beats__legend span { display: inline-flex; align-items: center; gap: .45rem; }
.bf-lane { display: inline-block; width: 10px; height: 10px; border-radius: 3px; flex: none; }
.bf-lane--pm { background: var(--signal); }
.bf-lane--mk { background: var(--ink); }
.bf-lane--ds { background: var(--ink-2); opacity: .6; }
.bf-lane--en { background: transparent; box-shadow: inset 0 0 0 1.5px var(--ink); }

.bf-beats__list { display: grid; gap: 6px; margin: 0; position: relative; }
@media (min-width: 760px) { .bf-beats__list { grid-template-columns: repeat(5, minmax(0, 1fr)); } }
.bf-beat {
  width: 100%; height: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .6rem;
  min-height: 52px; padding: .8rem .9rem; text-align: left; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--line);
  transition: border-color .3s, transform .45s var(--ease-out), box-shadow .3s;
}
@media (min-width: 760px) { .bf-beat { grid-template-columns: 1fr; align-content: start; gap: .5rem; min-height: 112px; } }
.bf-beat:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.bf-beat[aria-pressed="true"] { border-color: var(--ink); box-shadow: var(--shadow); }
.bf-beat__n { color: var(--muted); }
.bf-beat[aria-pressed="true"] .bf-beat__n { color: var(--signal-ink); }
.bf-beat__t { font: 500 .98rem/1.25 var(--font-sans); color: var(--ink); letter-spacing: -.01em; }
.bf-beat__who { display: inline-flex; gap: 4px; }
@media (min-width: 760px) { .bf-beat__who { margin-top: auto; } }
.bf-beat[data-beat="3"] { background: var(--signal-soft); }

.bf-beats__detail { display: grid; gap: .4rem; padding: 1.1rem 1.25rem; border-radius: var(--radius-sm); background: var(--surface); border-left: 2px solid var(--signal); }
.bf-beats__detail p { color: var(--ink-2); font-size: .97rem; line-height: 1.55; max-width: 70ch; }

/* refinements */
.bfp__bundle { gap: 8px; }
.bfp__bundle span { white-space: nowrap; }
.bf-shift[data-mode="discount"] .bf-ad__visual { grid-template-columns: minmax(0, 1fr); }
.bf-shift[data-mode="discount"] .bf-bundle { display: none; }