/* ==========================================================================
   Case-study cards (homepage "Work" section, v2.13)
   Moved from the old /work/ selection page; same look as Colours 2.0.
   Light brand cards: chapter colour on the top rule, metric and sketch.
   Public: no client names here (they stay inside the password-protected case studies).
   ========================================================================== */

.card--jpm { --c-accent: #B08D57; --c-accent-text: #8A6634; --c-line: #E6DCCB; --c-card: #F5EFE6; --c-sketch: #A07C48; }
.card--cmc { --c-accent: #2F7DE1; --c-accent-text: #1F63B5; --c-line: #D3E2F5; --c-card: #EAF2FC; --c-sketch: #2F7DE1; }
.card--mar { --c-accent: #E8A07A; --c-accent-text: #A4512F; --c-line: #F0DAD0; --c-card: #FBEEE7; --c-sketch: #C9785A; --c-glow: #F3C4AC; }
.card--jpm, .card--cmc { --c-glow: color-mix(in srgb, var(--c-sketch) 30%, transparent); }

/* Section */
.work { padding: var(--s-9) var(--gutter); border-top: var(--hair); }
.work__inner { max-width: 90rem; margin: 0 auto; }
.work__intro { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--s-4); margin-bottom: var(--s-6); }
.work__title { font-weight: 400; font-size: var(--step-4); line-height: 1; letter-spacing: var(--display-track); }
.work__title em { font-style: normal; color: var(--secondary); }
.work__note { font-family: var(--mono); font-size: var(--step--2); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); max-width: 30ch; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.card {
  position: relative; display: flex; flex-direction: column; min-height: min(36rem, 70svh);
  padding: var(--s-6); border-radius: 20px; overflow: hidden;
  background: var(--c-card); color: var(--ink); text-decoration: none;
  border: 1px solid var(--c-line); border-top: 4px solid var(--c-accent);
  transition: transform var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out);
}
.card::after { /* soft glow in the accent colour */
  content: ""; position: absolute; right: -30%; bottom: -30%; width: 90%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(closest-side, color-mix(in srgb, var(--c-accent) 18%, transparent), transparent);
  pointer-events: none; transition: transform var(--dur-3) var(--ease-out);
}
.card:hover, .card:focus-visible { transform: translateY(-6px); box-shadow: 0 30px 60px -34px rgba(0,0,0,0.28); }
.card:hover::after { transform: scale(1.12); }
.card:focus-visible { outline-color: var(--c-accent); }
.card__top { display: flex; justify-content: space-between; color: var(--ink-3); font-family: var(--mono); font-size: var(--step--2); letter-spacing: 0.1em; text-transform: uppercase; }
.card__client { margin-top: var(--s-6); font-size: var(--step-1); color: var(--ink-2); }
.card__hook { margin-top: var(--s-3); font-size: var(--step-2); line-height: 1.15; letter-spacing: -0.02em; max-width: 16ch; }
.card__metric { margin-top: var(--s-5); padding-top: var(--s-6); display: flex; align-items: end; justify-content: space-between; gap: var(--s-4); position: relative; z-index: 1; }
.card__metric b { display: block; font-weight: 400; font-size: var(--step-4); line-height: 0.95; letter-spacing: -0.05em; color: var(--c-accent-text); }
.card__metric small { display: block; margin-top: var(--s-2); font-size: var(--step--1); color: var(--ink-3); max-width: 18ch; }
.card__go {
  width: 52px; height: 52px; flex: none; border-radius: 50%; display: grid; place-items: center; font-size: 1.2rem;
  border: 1px solid color-mix(in srgb, var(--ink) 30%, transparent); color: var(--ink);
  transition: background var(--dur-2), color var(--dur-2), border-color var(--dur-2);
}
.card:hover .card__go, .card:focus-visible .card__go { background: var(--signal); border-color: var(--signal); color: #fff; }

/* Line sketches (v2.7) */
.card__art { display: block; margin-top: auto; padding-top: var(--s-5); position: relative; z-index: 1; }
.card__art svg { display: block; width: 100%; max-width: 320px; height: auto; overflow: visible; }
.card__art :is(path, circle, rect) { fill: none; stroke: var(--c-sketch, var(--c-accent)); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* Hover-only details start hidden */
.card__art .hv-lens, .card__art .hv-flag, .card__art .hv-waves path { opacity: 0; }
.card__art .hv-lens { transform-box: view-box; }

/* Draw on scroll (only when JS has opted in, so no-JS shows the finished drawing) */
.cards--anim .card__art :is(path, circle, rect) { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.4s var(--ease-out); }
.cards--anim .card__art .s2 :is(path, circle, rect) { transition-delay: 0.35s; }
.cards--anim .card__art .s3 :is(path, circle, rect) { transition-delay: 0.7s; }
.cards--anim .card.is-drawn .card__art :is(path, circle, rect) { stroke-dashoffset: 0; }
.cards--anim .card__art :is(.hv-lens, .hv-flag, .hv-waves) :is(path, circle) { stroke-dashoffset: 0; transition: none; }

@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  /* Banking: a magnifier screens the document, then a line gets flagged */
  .card--jpm:is(:hover, :focus-visible) .hv-lens { animation: lens 2.4s var(--ease-in-out, ease-in-out) infinite; }
  .card--jpm:is(:hover, :focus-visible) .hv-flag { opacity: 1; transition: opacity 0.3s 0.9s; }
  @keyframes lens {
    0%   { opacity: 0; transform: translate(0, 0); }
    10%  { opacity: 1; }
    30%  { transform: translate(18px, 0); }
    45%  { transform: translate(0, 12px); }
    65%  { transform: translate(14px, 24px); }
    85%  { opacity: 1; transform: translate(4px, 34px); }
    100% { opacity: 0; transform: translate(4px, 34px); }
  }
  /* Telecom: signal ripples out, status lights come on in sequence */
  .card--cmc:is(:hover, :focus-visible) .hv-waves path { animation: wave 1.6s ease-out infinite; }
  .card--cmc:is(:hover, :focus-visible) .hv-waves .w2 { animation-delay: 0.2s; }
  .card--cmc:is(:hover, :focus-visible) .hv-waves .w3 { animation-delay: 0.4s; }
  @keyframes wave { 0% { opacity: 0; } 30% { opacity: 1; } 100% { opacity: 0; } }
  .card__art .led { transition: fill 0.25s; }
  .card--cmc:is(:hover, :focus-visible) .led { fill: var(--c-sketch); }
  .card--cmc:is(:hover, :focus-visible) .led:nth-of-type(2) { transition-delay: 0.15s; }
  .card--cmc:is(:hover, :focus-visible) .led:nth-of-type(3) { transition-delay: 0.3s; }
  .card--cmc:is(:hover, :focus-visible) .led:nth-of-type(4) { transition-delay: 0.45s; }
  .card--cmc:is(:hover, :focus-visible) .led:nth-of-type(5) { transition-delay: 0.6s; }
  /* Hospitality: windows light up one by one, the flag waves */
  .card__art .win { transition: fill 0.3s; }
  .card--mar:is(:hover, :focus-visible) .win { fill: var(--c-glow); }
  .card--mar:is(:hover, :focus-visible) .win:nth-of-type(3n+2) { transition-delay: 0.2s; }
  .card--mar:is(:hover, :focus-visible) .win:nth-of-type(3n) { transition-delay: 0.4s; }
  .card--mar:is(:hover, :focus-visible) .win:nth-of-type(4n+1) { transition-delay: 0.6s; }
  .card--mar:is(:hover, :focus-visible) .hv-flag { opacity: 1; transform-box: fill-box; transform-origin: left center; animation: flag 1.2s ease-in-out infinite alternate; }
  @keyframes flag { from { transform: skewY(-6deg) scaleX(0.92); } to { transform: skewY(6deg) scaleX(1); } }
}
@media (prefers-reduced-motion: reduce) {
  .card, .card::after { transition: none; }
  .card:hover, .card:focus-visible { transform: none; }
  .card__art .hv-flag { opacity: 1; }
}

/* Stack on smaller screens */
@media (max-width: 1100px) {
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 22rem; }
}
@media (max-width: 720px) { .card__art svg { max-width: 240px; } }