/* ---------- Case studies ---------- */
.case {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 88px);
  align-items: center;
  padding: clamp(40px, 7vh, 88px) 0;
  border-bottom: 1px solid var(--line);
}
.case--flip .case__text { order: 2; }
.case--flip .case__visual { order: 1; }

.case__top { display: flex; align-items: center; gap: 16px; color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.case__no { color: var(--red); }
.case__status { display: inline-flex; align-items: center; }
.case__top .track__eq { margin-left: auto; }

.case__title {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(52px, 7.4vw, 116px);
  line-height: .98;
  text-transform: uppercase;
  letter-spacing: -.01em;
  margin-bottom: 16px;
  transition: color .4s, text-shadow .4s;
}
.case:hover .case__title { color: var(--red); text-shadow: 0 0 40px rgba(var(--red-rgb), .35); }
.case__sub { color: var(--red); font-size: 16px; margin-bottom: 20px; line-height: 1.45; }
.case__desc { color: var(--fg-2); font-size: clamp(16px, 1.25vw, 18px); max-width: 58ch; margin-bottom: 24px; }
.case__facts {
  max-width: 58ch;
  margin-bottom: 16px;
  padding-left: 14px;
  border-left: 2px solid rgba(var(--red-rgb), .45);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}
.case__stack { color: var(--fg-2); font-size: 14px; }
.case__note { color: var(--muted); font-size: 13px; margin-top: 16px; line-height: 1.5; }

.case__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  margin-top: 26px;
  padding: 0 22px;
  border: 1px solid rgba(var(--red-rgb), .55);
  border-radius: 999px;
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--fg);
  transition: background-color .3s, color .3s;
}
.case__link svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; transition: transform .3s var(--ease); }
.case__link:hover { background: var(--red); color: #0a0000; }
.case__link:hover svg { transform: translate(2px, -2px); }

.track__eq { display: inline-flex; align-items: flex-end; gap: 3px; height: 22px; }
.track__eq i {
  width: 3px; height: 100%;
  background: var(--red);
  border-radius: 2px;
  transform-origin: 50% 100%;
  transform: scaleY(.14);
  transition: transform .12s linear;
  opacity: .5;
}
.case:hover .track__eq i, .track__eq.is-on i { opacity: 1; }
.case:hover .track__eq i:nth-child(1), .track__eq.is-on i:nth-child(1) { transform: scaleY(calc(.14 + var(--bass) * .86)); }
.case:hover .track__eq i:nth-child(2), .track__eq.is-on i:nth-child(2) { transform: scaleY(calc(.14 + var(--mid) * .95)); }
.case:hover .track__eq i:nth-child(3), .track__eq.is-on i:nth-child(3) { transform: scaleY(calc(.14 + var(--beat) * .86)); }
.case:hover .track__eq i:nth-child(4), .track__eq.is-on i:nth-child(4) { transform: scaleY(calc(.14 + var(--high) * 1.4)); }
.case:hover .track__eq i:nth-child(5), .track__eq.is-on i:nth-child(5) { transform: scaleY(calc(.14 + var(--mid) * .6 + var(--bass) * .3)); }

.case--hidden {
  display: block;
  padding: clamp(40px, 7vh, 80px) 0;
  border-bottom: 0;
}
.case--hidden .case__title { font-size: clamp(40px, 5.5vw, 84px); }
.case__status--live { color: var(--red); }

/* ---------- Browser frame with real screenshot ---------- */
.case__visual { position: relative; perspective: 1400px; }
.case__visual::before {
  content: "";
  position: absolute;
  inset: 4% 6% auto;
  height: 70%;
  border-radius: 40px;
  background: radial-gradient(closest-side, rgba(var(--glow, var(--red-rgb)), .5), transparent);
  opacity: calc(.14 + var(--beat) * .4);
  transform: scale(1.15);
  pointer-events: none;
  will-change: opacity;
}
#case-myrathis .case__visual { --glow: 123, 92, 255; }
.frame {
  position: relative;
  margin: 0;
  border: 1px solid rgba(242, 238, 233, .14);
  border-radius: 14px;
  overflow: hidden;
  display: block;
  background: #0b0a0f;
  box-shadow: 0 40px 80px rgba(0, 0, 0, .55);
  transition: border-color .3s;
}
.frame:hover { border-color: rgba(var(--red-rgb), .5); }
.frame__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(20, 18, 26, .95);
}
.frame__bar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(242, 238, 233, .16); }
.frame__bar i:first-child { background: var(--red); }
.frame__bar span { margin-left: 10px; font-size: 10px; color: var(--muted); letter-spacing: .06em; text-transform: none; }
.frame img { display: block; width: 100%; height: auto; }

/* ---------- Mini demos ---------- */
.demo {
  position: relative;
  z-index: 2;
  width: min(92%, 420px);
  margin: -64px 0 0 auto;
  padding: 18px 18px 14px;
  border: 1px solid rgba(var(--red-rgb), .35);
  border-radius: 18px;
  background: rgba(12, 11, 17, .95);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55);
}
.case--flip .demo { margin-left: 0; margin-right: auto; }
.demo__head { display: flex; justify-content: space-between; gap: 10px; color: var(--red); font-size: 13px; margin-bottom: 12px; }
.demo__score { color: var(--fg); font-family: var(--f-mono); font-size: 12px; font-variant-numeric: tabular-nums; }
.demo__foot { color: var(--muted); font-size: 12px; margin-top: 10px; }

.demo__line { font-size: 16px; line-height: 1.9; color: var(--fg-2); }
.w {
  display: inline;
  min-height: 0;
  padding: 1px 3px;
  margin: 0 -1px;
  border-radius: 6px;
  color: var(--fg);
  background: rgba(242, 238, 233, .05);
  box-shadow: inset 0 -1px 0 rgba(242, 238, 233, .25);
  transition: background-color .2s, color .2s;
}
.w:hover { background: rgba(var(--red-rgb), .16); }
.w.is-fixed { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--red); background: none; box-shadow: none; }
.w.is-fixed::after {
  content: attr(data-fix);
  margin-left: 6px;
  color: #4be39a;
  text-decoration: none;
  display: inline-block;
  animation: pop .4s var(--ease);
}
.w.is-nope { animation: nope .4s ease; }
@keyframes pop { from { transform: translateY(6px) scale(.9); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes nope { 20%, 60% { transform: translateX(-4px); } 40%, 80% { transform: translateX(4px); } }

.demo__card {
  min-height: 3.2em;
  display: grid;
  align-items: center;
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.2;
  color: var(--fg);
  transition: opacity .25s, transform .35s var(--ease);
}
.demo__card.is-out { opacity: 0; transform: translateX(-24px); }
.demo__card.is-right { color: #4be39a; }
.demo__card.is-wrong { color: var(--red); }
.demo__choices { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }
.demo__choice { min-height: 44px; padding: 0 12px; }
.demo__choice:hover { background: rgba(var(--red-rgb), .14); }

/* ---------- Telegram mockup (Myrathis) ---------- */
.tg {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: min(100%, 460px);
  height: 560px;
  margin: 0 auto;
  border: 1px solid rgba(242, 238, 233, .14);
  border-radius: 28px;
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 10%, rgba(123, 92, 255, .18), transparent 40%),
    radial-gradient(circle at 90% 90%, rgba(var(--red-rgb), .14), transparent 45%),
    #0c0b12;
  box-shadow: 0 40px 90px rgba(0, 0, 0, .6);
}
.tg__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(18, 16, 26, .9);
}
.tg__ava {
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: conic-gradient(from 200deg, #ffcf5a, #ff2a3d, #7b5cff, #ffcf5a);
  color: #0a0612;
  font-family: var(--f-name);
  font-size: 20px;
}
.tg__who { display: grid; line-height: 1.3; }
.tg__who strong { font-size: 15px; }
.tg__status { font-size: 12px; color: #8fb6ff; }
.tg__demo { margin-left: auto; font-size: 11px; padding: 3px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); }

.tg__feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
}
.msg { max-width: 88%; animation: msgIn .45s var(--ease); }
.msg p { margin: 0; padding: 10px 14px; border-radius: 16px; font-size: 14px; line-height: 1.45; }
.msg--bot { align-self: flex-start; }
.msg--bot p { background: rgba(38, 34, 52, .95); border-bottom-left-radius: 4px; }
.msg--me { align-self: flex-end; }
.msg--me p { background: linear-gradient(135deg, #7b5cff, #5a3fe0); border-bottom-right-radius: 4px; color: #fff; font-family: var(--f-mono); font-size: 13px; }
.msg--luna p { background: linear-gradient(135deg, rgba(60, 40, 110, .95), rgba(30, 20, 60, .95)); border: 1px solid rgba(160, 130, 255, .35); }
.msg--luna p b { color: #c9b8ff; }
@keyframes msgIn { from { opacity: 0; transform: translateY(10px) scale(.97); } to { opacity: 1; transform: none; } }

.typing { display: inline-flex; gap: 4px; padding: 12px 14px; border-radius: 16px; border-bottom-left-radius: 4px; background: rgba(38, 34, 52, .95); align-self: flex-start; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: typing 1s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; }
.typing i:nth-child(3) { animation-delay: .3s; }
@keyframes typing { 0%, 60%, 100% { transform: translateY(0); opacity: .4; } 30% { transform: translateY(-4px); opacity: 1; } }

/* profile card inside the chat */
.pcard {
  width: min(300px, 100%);
  padding: 14px;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(255, 207, 90, .16), transparent 50%),
    linear-gradient(160deg, #2a1845, #120b22);
  border: 1px solid rgba(255, 207, 90, .45);
  box-shadow: inset 0 0 30px rgba(255, 207, 90, .08);
}
.pcard__top { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.pcard__ava { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, #ff2a3d, #7b5cff); font-family: var(--f-name); font-size: 22px; }
.pcard__name { font-weight: 600; font-size: 16px; }
.rank {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 3px;
  padding: 2px 8px 2px 4px;
  border-radius: 999px;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
  color: #1a0f00;
  background: linear-gradient(90deg, #ffe39a, #ffb43d);
}
.rank::before { content: ""; width: 12px; height: 12px; clip-path: polygon(50% 0, 100% 38%, 82% 100%, 18% 100%, 0 38%); background: #7a2cff; }
.pcard__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.pcard__stats div { padding: 8px; border-radius: 10px; background: rgba(0, 0, 0, .3); text-align: center; }
.pcard__stats b { display: block; font-family: var(--f-display); font-size: 18px; }
.pcard__stats span { font-family: var(--f-mono); font-size: 8px; letter-spacing: .1em; color: var(--muted); text-transform: uppercase; }

.ladder { display: grid; gap: 5px; width: min(300px, 100%); }
.ladder li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 10px;
  border-radius: 8px;
  font-family: var(--f-mono); font-size: 11px; letter-spacing: .06em;
  background: rgba(0, 0, 0, .28);
  color: var(--muted);
  opacity: 0;
  animation: rise .4s var(--ease) forwards;
  animation-delay: calc(var(--k) * 90ms);
}
.ladder li.is-me { color: #1a0f00; background: linear-gradient(90deg, #ffe39a, #ffb43d); font-weight: 700; }

.floorbar { width: min(300px, 100%); height: 8px; border-radius: 8px; background: rgba(0, 0, 0, .35); overflow: hidden; margin-top: 8px; }
.floorbar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #7b5cff, #ff2a3d); transition: width 1.2s var(--ease); }

.tg__cmds {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 12px;
  border-top: 1px solid var(--line);
  background: rgba(18, 16, 26, .92);
}
.tg__cmd {
  flex: 1 1 auto;
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid rgba(123, 92, 255, .45);
  border-radius: 12px;
  color: #cfc4ff;
  font-family: var(--f-mono);
  font-size: 12px;
  transition: background-color .25s, color .25s;
}
.tg__cmd:hover { background: rgba(123, 92, 255, .22); color: #fff; }
.tg__cmd:disabled { opacity: .45; cursor: wait; }

/* ---------- Stack equalizer ---------- */
.eqwrap { margin-top: clamp(48px, 8vw, 104px); }
.eqwrap__label { font-size: 14px; }
.eqwrap__head { display: grid; grid-template-columns: auto 1fr; gap: 10px 40px; align-items: baseline; margin-bottom: 26px; }
.eqwrap__note { color: var(--fg-2); max-width: 70ch; }
.eqwrap__tip { display: block; margin-top: 8px; color: var(--red); font-size: 14px; min-height: 1.6em; }

.eq {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: 6px;
  height: 300px;
  align-items: end;
}
.eq__bar {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding: 0;
  border-radius: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.eq__fill {
  width: 100%;
  height: 100%;
  border-radius: 6px;
  transform-origin: 50% 100%;
  transform: scaleY(.05);
  will-change: transform;
  background: linear-gradient(to top, rgba(var(--red-rgb), .95), rgba(255, 180, 90, .8) 70%, rgba(242, 238, 233, .9));
  opacity: .82;
  transition: opacity .2s;
}
.eq__peak {
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 2px;
  background: var(--fg);
  will-change: transform;
}
.eq__label {
  position: absolute;
  bottom: 10px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
  mix-blend-mode: difference;
  pointer-events: none;
}
.eq__bar:hover .eq__fill, .eq__bar.is-active .eq__fill { opacity: 1; background: linear-gradient(to top, var(--fg), var(--fg)); }

/* ---------- Concert mode ---------- */
.concert {
  position: fixed;
  inset: 0;
  z-index: 35;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity .8s ease;
}
.concert__title {
  font-family: var(--f-name);
  font-size: clamp(64px, 17vw, 300px);
  line-height: .9;
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(242, 238, 233, .75);
  transform: scale(calc(1 + var(--bass) * .06));
  text-shadow: 0 0 40px rgba(var(--red-rgb), .7);
  will-change: transform;
}
.concert__scope {
  position: absolute;
  left: 0; top: 50%;
  width: 100%;
  height: 60vh;
  transform: translateY(-50%);
  mix-blend-mode: screen;
}
.concert__title, .concert__meta, .concert__hint { position: relative; }
.concert__meta { color: var(--fg-2); }
.concert__hint { color: var(--muted); font-size: 10px; margin-top: 18px; }
body.is-concert .concert { opacity: 1; }
body.is-concert main, body.is-concert .topbar { opacity: 0; pointer-events: none; transition: opacity .8s; }

main { transition: opacity .8s; }

/* ---------- Responsive ---------- */
@media (max-width: 1020px) {
  .case, .case--flip { grid-template-columns: 1fr; }
  .case--flip .case__text, .case--flip .case__visual { order: 0; }
  .demo, .case--flip .demo { margin: -40px 12px 0 auto; }
}

@media (max-width: 720px) {
  .case { padding: 40px 0; gap: 28px; }
  .demo, .case--flip .demo { width: auto; margin: -28px 8px 0; }
  .demo__line { font-size: 15px; }
  .tg { height: 520px; border-radius: 22px; }
  .eqwrap__head { grid-template-columns: 1fr; }
  .eq { gap: 3px; height: 240px; }
  .eq__label { font-size: 9px; bottom: 6px; letter-spacing: .02em; }
}