/* ============================================================
   Braindoos — Case Studies page styles
   ============================================================ */

/* ---------- CS HERO ---------- */
.cshero {
  position: relative; background: var(--navy-900); color: #fff;
  padding: calc(var(--nav-h) + 72px) 0 64px; overflow: hidden;
}
.cshero__bg { position: absolute; inset: 0; background:
  radial-gradient(760px 480px at 84% 12%, rgba(34,211,238,.14), transparent 60%),
  radial-gradient(700px 520px at 8% 100%, rgba(59,91,196,.28), transparent 62%),
  linear-gradient(180deg, var(--navy-900), var(--navy-800) 80%); }
.cshero__grid { position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 80%); -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 80%); }
.cshero .wrap { position: relative; z-index: 2; }
.cshero__badge { display: inline-flex; align-items: center; gap: 9px; padding: 8px 16px; border-radius: 100px; background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); font-size: 12.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.cshero h1 { color: #fff; font-size: 54px; letter-spacing: -0.03em; margin-top: 24px; max-width: 800px; }
.cshero h1 .grad { background: linear-gradient(100deg, #6FE9FB, var(--accent) 50%, #7C8FF0); -webkit-background-clip: text; background-clip: text; color: transparent; }
.cshero__sub { margin-top: 22px; font-size: 19px; color: rgba(225,233,250,.78); max-width: 600px; }
.cshero__stats { margin-top: 46px; display: grid; grid-template-columns: repeat(4, max-content); gap: 56px; }
.cshero__stat .n { font-family: var(--font-display); font-weight: 600; font-size: 42px; letter-spacing: -0.03em; line-height: 1; color: #fff; }
.cshero__stat .n .suffix { color: var(--accent); }
.cshero__stat .l { margin-top: 8px; font-size: 13.5px; font-weight: 600; color: rgba(225,233,250,.62); }

/* ---------- FILTER BAR ---------- */
.csfilter { position: sticky; top: var(--nav-h); z-index: 40; background: rgba(255,255,255,.86); backdrop-filter: saturate(180%) blur(16px); -webkit-backdrop-filter: saturate(180%) blur(16px); border-bottom: 1px solid var(--line); }
.csfilter__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px 0; flex-wrap: wrap; }
.csfilter__group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.csfilter__label { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-200); margin-right: 4px; }
.csfilter__btn { font-family: var(--font-body); font-weight: 600; font-size: 13.5px; padding: 8px 15px; border-radius: 100px; cursor: pointer; background: var(--bg); border: 1px solid var(--line-strong); color: var(--ink-700); transition: all .18s ease; }
.csfilter__btn:hover { border-color: var(--primary-400); color: var(--primary); }
.csfilter__btn.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 4px 12px rgba(11,42,107,.22); }
.csfilter__count { font-size: 13.5px; font-weight: 600; color: var(--muted); white-space: nowrap; }
.csfilter__count b { color: var(--primary); font-weight: 700; }

/* ---------- FEATURED ---------- */
.csfeat { background: var(--bg); padding: 72px 0 12px; }
.csfeat__card { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; border-radius: var(--r-xl); overflow: hidden; background: linear-gradient(150deg, var(--navy-800), var(--navy-900) 72%); color: #fff; box-shadow: var(--shadow-lg); }
.csfeat__media { position: relative; min-height: 460px; overflow: hidden; }
.csfeat__media .ph-label { position: absolute; left: 20px; bottom: 18px; font-family: var(--font-display); font-size: 11px; letter-spacing: .1em; color: rgba(255,255,255,.7); background: rgba(6,15,43,.55); padding: 6px 12px; border-radius: 8px; }
.csfeat__media::after { content:""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 40%, rgba(6,15,43,.6)); }
.csfeat__body { position: relative; z-index: 2; padding: 52px; display: flex; flex-direction: column; justify-content: center; }
.csfeat__tags { display: flex; gap: 8px; flex-wrap: wrap; }
.csfeat__tag { font-size: 11.5px; font-weight: 700; letter-spacing: .04em; padding: 6px 12px; border-radius: 100px; background: rgba(34,211,238,.16); color: var(--accent); border: 1px solid rgba(34,211,238,.28); }
.csfeat__tag--ghost { background: rgba(255,255,255,.06); color: rgba(225,233,250,.82); border-color: rgba(255,255,255,.14); }
.csfeat__client { margin-top: 22px; font-family: var(--font-display); font-weight: 700; font-size: 14px; letter-spacing: .02em; color: rgba(225,233,250,.7); }
.csfeat__body h2 { color: #fff; font-size: 34px; line-height: 1.14; margin-top: 10px; }
.csfeat__body p { margin-top: 16px; font-size: 16px; color: rgba(225,233,250,.76); line-height: 1.6; max-width: 460px; }
.csfeat__metrics { margin-top: 30px; display: flex; gap: 40px; }
.csfeat__metric .n { font-family: var(--font-display); font-weight: 600; font-size: 38px; letter-spacing: -0.03em; line-height: 1; }
.csfeat__metric .n .suffix { color: var(--accent); }
.csfeat__metric .l { margin-top: 6px; font-size: 13px; color: rgba(225,233,250,.62); }
.csfeat__link { margin-top: 34px; display: inline-flex; align-items: center; gap: 9px; font-weight: 700; font-size: 15px; color: #fff; align-self: flex-start; padding: 13px 22px; border-radius: 12px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.2); transition: all .2s ease; }
.csfeat__link:hover { background: rgba(34,211,238,.16); border-color: rgba(34,211,238,.4); transform: translateY(-2px); }
.csfeat__link svg { width: 17px; height: 17px; transition: transform .2s ease; }
.csfeat__link:hover svg { transform: translateX(4px); }

/* ---------- GRID ---------- */
.csgrid { background: var(--bg); padding: 56px 0 110px; }
.csgrid__inner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cscard { position: relative; display: flex; flex-direction: column; border-radius: var(--r-lg); overflow: hidden; background: var(--bg); border: 1px solid var(--line); box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .3s ease, border-color .2s ease; cursor: pointer; }
.cscard:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--line-strong); z-index: 2; }
.cscard__media { position: relative; height: 190px; overflow: hidden; }
.cscard__media::after { content:""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,15,43,.05), rgba(6,15,43,.45)); }
.cscard__chip { position: absolute; top: 14px; left: 14px; z-index: 2; font-size: 11px; font-weight: 700; letter-spacing: .04em; padding: 6px 11px; border-radius: 100px; background: rgba(255,255,255,.92); color: var(--primary); backdrop-filter: blur(6px); }
.cscard__body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.cscard__client { font-family: var(--font-display); font-weight: 700; font-size: 12.5px; letter-spacing: .04em; color: var(--accent-600); text-transform: uppercase; }
.cscard h3 { font-size: 19px; margin-top: 10px; line-height: 1.22; }
.cscard p { margin-top: 10px; color: var(--muted); font-size: 14.5px; flex: 1; }
.cscard__stats { margin-top: 20px; display: flex; gap: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.cscard__stat .n { font-family: var(--font-display); font-weight: 600; font-size: 24px; letter-spacing: -0.02em; color: var(--primary); line-height: 1; }
.cscard__stat .n .suffix { color: var(--accent-600); }
.cscard__stat .l { margin-top: 5px; font-size: 11.5px; font-weight: 600; color: var(--muted); }
.cscard__foot { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; }
.cscard__cap { font-size: 12px; font-weight: 600; color: var(--ink-700); background: var(--panel); border: 1px solid var(--line); padding: 5px 11px; border-radius: 100px; white-space: nowrap; }
.cscard__arrow { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--panel); color: var(--primary); transition: background .2s ease, color .2s ease, transform .2s ease; }
.cscard:hover .cscard__arrow { background: var(--primary); color: #fff; }
.cscard__arrow svg { width: 16px; height: 16px; transition: transform .2s ease; }
.cscard.is-hidden { display: none; }
.cscard.pop { animation: cardPop .42s cubic-bezier(.2,.7,.2,1); }
@keyframes cardPop { from { opacity: .3; transform: translateY(10px) scale(.98); } to { opacity: 1; transform: none; } }

.csgrid__empty { display: none; text-align: center; padding: 60px 0; color: var(--muted); font-size: 16px; }
.csgrid__empty.show { display: block; }

/* ---------- RESULTS BAND ---------- */
.csband { background: var(--navy-900); color: #fff; position: relative; overflow: hidden; }
.csband__bg { position: absolute; inset: 0; background:
  radial-gradient(640px 420px at 88% 10%, rgba(34,211,238,.13), transparent 60%),
  radial-gradient(620px 440px at 4% 98%, rgba(59,91,196,.24), transparent 62%); }
.csband .wrap { position: relative; z-index: 2; }
.csband__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.csband__item { text-align: center; }
.csband__item .n { font-family: var(--font-display); font-weight: 600; font-size: 50px; letter-spacing: -0.03em; line-height: 1; }
.csband__item .n .suffix { color: var(--accent); }
.csband__item .l { margin-top: 12px; font-size: 14.5px; color: rgba(225,233,250,.66); }

/* striped placeholder tints (extend) */
.ph--g { background-color: #0F2E55; }
.ph--h { background-color: #16244c; }
.ph--i { background-color: #112a50; }

@media (max-width: 1080px) {
  .csfeat__card { grid-template-columns: 1fr; }
  .csgrid__inner { grid-template-columns: repeat(2, 1fr); }
  .cshero__stats { grid-template-columns: repeat(2, max-content); gap: 32px; }
  .csband__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .csgrid__inner, .csband__grid { grid-template-columns: 1fr; }
  .cshero__stats { grid-template-columns: 1fr; gap: 16px; }
}

/* WordPress theme overrides — keep mock hover behaviour */
body.page-case-studies .cscard,
body.page-template-mock-page .csgrid .cscard {
  transition: transform .25s ease, box-shadow .3s ease, border-color .2s ease !important;
}

body.page-case-studies .cscard:hover,
body.page-template-mock-page .csgrid .cscard:hover {
  transform: translateY(-6px) !important;
  box-shadow: var(--shadow-lg) !important;
  border-color: var(--line-strong) !important;
  z-index: 2;
}

body.page-case-studies .cscard:hover .cscard__arrow,
body.page-template-mock-page .csgrid .cscard:hover .cscard__arrow {
  background: var(--primary) !important;
  color: #fff !important;
}

body.page-case-studies .cscard h3,
body.page-template-mock-page .csgrid .cscard h3 {
  font-family: var(--font-display) !important;
  font-size: 19px !important;
  line-height: 1.22 !important;
  font-weight: 600 !important;
  color: var(--ink) !important;
}

body.page-case-studies .csfeat__link,
body.page-case-studies .csfeat__link:hover,
body.page-template-mock-page .csfeat__link,
body.page-template-mock-page .csfeat__link:hover {
  color: #fff !important;
}

body.page-case-studies .csfilter__btn,
body.page-template-mock-page .csfilter__btn {
  appearance: none;
  -webkit-appearance: none;
  font-family: var(--font-body) !important;
}

body.page-case-studies .csfilter__btn:hover,
body.page-template-mock-page .csfilter__btn:hover {
  border-color: var(--primary-400) !important;
  color: var(--primary) !important;
  background: var(--bg) !important;
}

body.page-case-studies .csfilter__btn.active,
body.page-template-mock-page .csfilter__btn.active {
  background: var(--primary) !important;
  color: #fff !important;
  border-color: var(--primary) !important;
  box-shadow: 0 4px 12px rgba(11,42,107,.22) !important;
}

@media (prefers-reduced-motion: reduce) {
  body.page-case-studies .cscard,
  body.page-template-mock-page .csgrid .cscard {
    transition: none !important;
  }

  body.page-case-studies .cscard:hover,
  body.page-template-mock-page .csgrid .cscard:hover {
    transform: none !important;
  }
}