/* ============================================================================
   hack.courses — trading cards
   ============================================================================ */
.tcg-bar { display: flex; align-items: center; gap: var(--space-5); flex-wrap: wrap; margin-top: var(--space-5); }
.tcg-stat .n { font-family: 'Space Grotesk', sans-serif; font-size: 30px; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.tcg-stat .n span { font-size: 18px; color: var(--text-3); }
.tcg-stat .n.hc { color: var(--accent-1); }
.tcg-stat .l { font-size: 12px; color: var(--text-3); text-transform: uppercase; letter-spacing: .08em; margin-top: 4px; }
.tcg-progress { height: 6px; border-radius: 999px; background: var(--surface-2); margin-top: var(--space-5); overflow: hidden; }
.tcg-progress span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-1), var(--accent-2)); }

.tcg-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: var(--space-5); }

/* ── the card ─────────────────────────────────────────────────────────────── */
.tcard { --rc: #8b93a7; display: block; text-decoration: none; perspective: 900px; }
.tcard.big { max-width: 300px; margin: 0 auto; }
.tcard-frame {
  position: relative; aspect-ratio: 63 / 88; border-radius: 14px; overflow: hidden;
  background: #0b0e16; border: 2px solid var(--rc);
  box-shadow: 0 10px 30px -14px rgba(0,0,0,.7), 0 0 0 1px rgba(255,255,255,.04) inset;
  transition: transform .18s ease, box-shadow .18s ease; transform-style: preserve-3d;
}
.tcard:hover .tcard-frame { transform: translateY(-6px) rotateX(4deg); box-shadow: 0 22px 44px -18px var(--rc); }
.tcard-art { position: relative; height: 62%; overflow: hidden; background: #11151f; }
.tcard-art img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tcard-art::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, #0b0e16); }
.tcard-type { position: absolute; top: 8px; left: 8px; font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; padding: 2px 8px; border-radius: 999px; background: rgba(0,0,0,.55); color: #fff; backdrop-filter: blur(3px); }
.tcard-count { position: absolute; top: 8px; right: 8px; font-family: 'Space Grotesk', sans-serif; font-weight: 700;
  font-size: 12px; padding: 2px 8px; border-radius: 999px; background: rgba(0,0,0,.6); color: #fff; }
.tcard-new { position: absolute; bottom: 8px; right: 8px; font-size: 10px; font-weight: 800; letter-spacing: .1em;
  padding: 2px 8px; border-radius: 4px; background: var(--accent-2); color: #fff; box-shadow: 0 2px 10px var(--accent-2); }
.tcard-body { position: relative; height: 38%; padding: 10px 12px; display: flex; flex-direction: column;
  justify-content: space-between; background: linear-gradient(180deg, #0b0e16, #0e1320); z-index: 2; }
.tcard-name { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 14px; line-height: 1.15; color: #fff;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.tcard.big .tcard-name { font-size: 18px; }
.tcard-foot { display: flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--rc); }
.tcard-foot .gem { width: 9px; height: 9px; border-radius: 2px; transform: rotate(45deg); background: var(--rc); box-shadow: 0 0 8px var(--rc); }

/* rarity colours */
.tcard.r-common    { --rc: #8b93a7; }
.tcard.r-uncommon  { --rc: #32d296; }
.tcard.r-rare      { --rc: #4b8bff; }
.tcard.r-legendary { --rc: #f5b301; }

/* holographic sheen for rare + legendary */
.tcard-holo, .tcard-shine { position: absolute; inset: 0; pointer-events: none; z-index: 3; border-radius: 12px; }
.tcard-holo { opacity: 0; transition: opacity .2s; mix-blend-mode: color-dodge;
  background: linear-gradient(115deg, transparent 20%, rgba(75,139,255,.5), rgba(236,72,153,.5), rgba(50,210,150,.5), transparent 80%);
  background-size: 300% 300%; }
.tcard.r-rare .tcard-holo, .tcard.r-legendary .tcard-holo { opacity: .35; animation: holoShift 6s linear infinite; }
.tcard:hover .tcard-holo { opacity: .6; }
.tcard.r-legendary .tcard-frame { box-shadow: 0 10px 30px -10px rgba(245,179,1,.5), 0 0 0 1px rgba(245,179,1,.3) inset; }
.tcard-shine { background: linear-gradient(115deg, transparent 40%, rgba(255,255,255,.22) 50%, transparent 60%);
  background-size: 250% 250%; background-position: 120% 0; transition: background-position .5s ease; }
.tcard:hover .tcard-shine { background-position: -40% 0; }
@keyframes holoShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }

/* locked / not collected */
.tcard.is-locked .tcard-frame { border-color: var(--border-strong); }
.tcard.is-locked .tcard-art img { filter: grayscale(1) brightness(.4); }
.tcard.is-locked .tcard-name { color: var(--text-3); }
.tcard.is-locked .tcard-art::before { content: "🔒"; position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 30px; opacity: .7; z-index: 2; }
.tcard.is-locked .tcard-holo, .tcard.is-locked .tcard-shine { display: none; }

/* ── pack reveal ──────────────────────────────────────────────────────────── */
.rc-stage { display: flex; gap: var(--space-5); flex-wrap: wrap; justify-content: center; align-items: center;
  min-height: 420px; perspective: 1400px; }
.reveal-card { width: 200px; position: relative; }
.rc-flipper { position: relative; aspect-ratio: 63 / 88; transform-style: preserve-3d;
  transition: transform .6s cubic-bezier(.2,.9,.25,1.4); }
.reveal-card.flipped .rc-flipper { transform: rotateY(180deg); }
.rc-back, .rc-front { position: absolute; inset: 0; backface-visibility: hidden; border-radius: 14px; }
.rc-front { transform: rotateY(180deg); }
.rc-front .tcard { display: block; }
.rc-front .tcard-frame { transform: none !important; }
.rc-back { background: linear-gradient(160deg, #141a2b, #0b0e16); border: 2px solid var(--border-strong);
  display: grid; place-items: center; overflow: hidden; cursor: pointer;
  box-shadow: 0 10px 30px -14px rgba(0,0,0,.7); }
.rc-logo { font-family: 'JetBrains Mono', monospace; font-size: 40px; font-weight: 700;
  color: var(--accent-1); text-shadow: 0 0 18px var(--accent-1); z-index: 2; }
.rc-back-glow { position: absolute; inset: -40%; background: conic-gradient(from 0deg, transparent, rgba(75,139,255,.25), transparent 40%);
  animation: rcSpin 4s linear infinite; }
@keyframes rcSpin { to { transform: rotate(360deg); } }
.reveal-card.is-active .rc-back { border-color: var(--accent-1); animation: rcPulse 1.1s ease-in-out infinite; }
.reveal-card.is-active::after { content: "tap"; position: absolute; left: 50%; bottom: -26px; transform: translateX(-50%);
  font-size: 11px; letter-spacing: .15em; text-transform: uppercase; color: var(--text-3); }
@keyframes rcPulse { 0%,100% { box-shadow: 0 0 0 0 rgba(75,139,255,.0); } 50% { box-shadow: 0 0 28px 2px rgba(75,139,255,.5); } }

/* charge-up before flip (suspense) */
.reveal-card.charging .rc-flipper { animation: rcShake .5s ease-in-out infinite; }
.reveal-card.charging .rc-back { box-shadow: 0 0 40px 6px var(--accent-1); }
.reveal-card.charge-rare .rc-back { box-shadow: 0 0 46px 8px #4b8bff; }
.reveal-card.charge-legendary .rc-back { box-shadow: 0 0 60px 14px #f5b301; }
@keyframes rcShake { 0%,100%{transform:translate(0,0) rotate(0)} 25%{transform:translate(-2px,1px) rotate(-1deg)} 75%{transform:translate(2px,-1px) rotate(1deg)} }

.reveal-card.lit.r-legendary .rc-front .tcard-frame { box-shadow: 0 0 44px -4px #f5b301, 0 0 0 1px rgba(245,179,1,.4) inset; }
.reveal-card.lit.r-rare .rc-front .tcard-frame { box-shadow: 0 0 38px -8px #4b8bff; }
.rc-newtag { position: absolute; top: -10px; right: -8px; z-index: 5; font-size: 11px; font-weight: 800; letter-spacing: .1em;
  padding: 3px 9px; border-radius: 6px; background: var(--accent-2); color: #fff; box-shadow: 0 4px 14px var(--accent-2); transform: rotate(6deg); }

/* glitter particles */
.rc-glitter { position: fixed; inset: 0; pointer-events: none; z-index: 300; }
.rc-glitter i { position: fixed; border-radius: 50%; opacity: 0; transform: translate(-50%, -50%);
  box-shadow: 0 0 8px currentColor; animation-name: rcSpark; animation-timing-function: cubic-bezier(.1,.7,.3,1); animation-fill-mode: forwards; }
@keyframes rcSpark { 0% { opacity: 1; transform: translate(-50%,-50%) scale(1); }
  100% { opacity: 0; transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(.2); } }

/* rarity flash + banner */
.rc-flash { position: fixed; inset: 0; z-index: 250; pointer-events: none; opacity: 0; transition: opacity .12s; }
.rc-flash.show { opacity: .5; }
.rc-flash.rare { background: radial-gradient(circle at 50% 45%, rgba(75,139,255,.45), transparent 60%); }
.rc-flash.legendary { background: radial-gradient(circle at 50% 45%, rgba(245,179,1,.6), transparent 62%); opacity: .7; }
.rc-banner { position: fixed; top: 22%; left: 50%; transform: translateX(-50%) scale(.6); z-index: 260; pointer-events: none;
  font-family: 'Space Grotesk', sans-serif; font-weight: 800; font-size: 44px; letter-spacing: .1em;
  color: #f5b301; text-shadow: 0 0 30px #f5b301, 0 2px 0 #7a5a00; opacity: 0; }
.rc-banner.show { animation: rcBanner 1.4s ease forwards; }
@keyframes rcBanner { 0%{opacity:0;transform:translateX(-50%) scale(.6)} 20%{opacity:1;transform:translateX(-50%) scale(1.05)} 80%{opacity:1} 100%{opacity:0;transform:translateX(-50%) scale(1)} }

.rc-actions, .rc-done { text-align: center; margin-top: var(--space-6); }
@media (max-width: 640px) { .reveal-card { width: 150px; } .rc-stage { min-height: 320px; gap: var(--space-4); } }

/* detail */
.tcg-detail { display: grid; grid-template-columns: 300px 1fr; gap: var(--space-6); align-items: start; }
.tcg-detail-info h1 { font-family: 'Space Grotesk', sans-serif; font-size: 34px; letter-spacing: -0.02em; margin: var(--space-2) 0; }
.r-label { font-weight: 700; } .r-label.r-common{color:#8b93a7} .r-label.r-uncommon{color:#32d296} .r-label.r-rare{color:#4b8bff} .r-label.r-legendary{color:#f5b301}
@media (max-width: 720px) { .tcg-detail { grid-template-columns: 1fr; } .tcg-detail-card { max-width: 280px; margin: 0 auto; } }

/* responsive hero bar */
.tcg-bar .tcg-stat { flex: none; }
.tcg-bar .tcg-spacer { flex: 1 1 auto; }
@media (max-width: 640px) {
  .tcg-bar { gap: var(--space-4); }
  .tcg-bar form, .tcg-bar > a.btn { flex: 1 1 100%; }
  .tcg-bar form .btn, .tcg-bar > a.btn { width: 100%; text-align: center; }
}

/* rarity breakdown + filters */
.tcg-raritybar { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-4); }
.rstat { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .05em; padding: 5px 11px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); color: var(--text-2); }
.rstat strong { color: var(--text); }
.rstat .gem { width: 8px; height: 8px; border-radius: 2px; transform: rotate(45deg); }
.rstat.r-common .gem{background:#8b93a7} .rstat.r-uncommon .gem{background:#32d296} .rstat.r-rare .gem{background:#4b8bff} .rstat.r-legendary .gem{background:#f5b301}
.rstat.dupes { color: var(--text-3); }

.tcg-filters { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: var(--space-5); }
.fbtn { background: var(--surface); border: 1px solid var(--border); color: var(--text-2); font-size: 13px; font-weight: 500;
  padding: 6px 14px; border-radius: 999px; cursor: pointer; transition: all .12s; }
.fbtn:hover { color: var(--text); border-color: var(--border-strong); }
.fbtn.on { background: var(--accent-1); border-color: var(--accent-1); color: #fff; }
.fsep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }