/* ============================================================
   ВПЕРЁД／前进 — 至上主义 × 构成主义 先锋电台
   DAY = colour (constructivist red/ink/paper)  |  NIGHT = pure B&W
   ============================================================ */

:root{
  --paper:   #f2ecdf;
  --paper2:  #e6dcc6;
  --ink:     #14110f;
  --red:     #cf1f27;
  --red-d:   #8f1218;
  --line:    #14110f;
  --dim:     rgba(20,17,15,.55);
  --shade:   rgba(20,17,15,.08);
  --grid:    rgba(20,17,15,.14);
  --plate:   #ffffff;
  --shadow:  8px 8px 0 var(--ink);
  --maxw:    1320px;
  --gut:     clamp(16px,3vw,40px);
  --mono:    ui-monospace,"SFMono-Regular","Liberation Mono",Menlo,Consolas,"Noto Sans Mono",monospace;
  --sans:    "Helvetica Neue",Helvetica,Arial,"Liberation Sans","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}

html[data-mode="night"]{
  --paper:   #000000;
  --paper2:  #0b0b0b;
  --ink:     #ffffff;
  --red:     #ffffff;
  --red-d:   #bdbdbd;
  --line:    #ffffff;
  --dim:     rgba(255,255,255,.62);
  --shade:   rgba(255,255,255,.07);
  --grid:    rgba(255,255,255,.16);
  --plate:   #000000;
  --shadow:  8px 8px 0 #ffffff;
}

/* night = strictly monochrome (sections only, so fixed overlays stay put) */
html[data-mode="night"] .topbar,
html[data-mode="night"] main,
html[data-mode="night"] .foot{ filter: grayscale(1) contrast(1.05); }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; overflow-x:clip; }
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:16px; line-height:1.5;
  -webkit-font-smoothing:antialiased;
  transition: background .55s ease, color .55s ease;
}
h1,h2,h3,p,ol,ul,figure{ margin:0; }
ol,ul{ list-style:none; padding:0; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
.mono{ font-family:var(--mono); }
.dim{ opacity:.6; }

/* ── overlays ─────────────────────────────────────────── */
.grain{
  position:fixed; inset:-50%; pointer-events:none; z-index:60; opacity:.3;
  background-image:radial-gradient(var(--grid) .6px, transparent .6px);
  background-size:4px 4px; mix-blend-mode:multiply;
}
html[data-mode="night"] .grain{ mix-blend-mode:screen; opacity:.25; }
.wipe{
  position:fixed; inset:0; z-index:70; pointer-events:none; transform:translateX(-101%);
  background:linear-gradient(105deg,var(--red) 0 42%,var(--ink) 42% 100%);
}
.wipe.go{ animation:wipe .62s cubic-bezier(.76,0,.24,1) both; }
@keyframes wipe{
  0%{ transform:translateX(-101%); }
  48%{ transform:translateX(0); }
  100%{ transform:translateX(101%); }
}

/* ── topbar ───────────────────────────────────────────── */
.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; gap:clamp(12px,2.4vw,32px); flex-wrap:wrap;
  padding:10px var(--gut);
  background:var(--paper); border-bottom:3px solid var(--line);
}
.brand{ display:flex; align-items:center; gap:10px; letter-spacing:.14em; }
.brand b{ font-size:20px; letter-spacing:.2em; }
.brand .sq{ width:20px; height:20px; background:var(--red); display:inline-block; }
.brand .dim{ font-size:11px; letter-spacing:.1em; }
.modes{ display:flex; margin-left:auto; border:3px solid var(--line); }
.modes button{
  display:flex; flex-direction:column; align-items:flex-start; gap:2px;
  padding:7px 16px; letter-spacing:.16em; font-size:13px; font-weight:700;
  border-right:3px solid var(--line); transition:background .2s,color .2s;
}
.modes button:last-child{ border-right:0; }
.modes button span{ font-family:var(--mono); font-size:10px; letter-spacing:.06em; opacity:.7; font-weight:400; }
.modes button:hover{ background:var(--shade); }
.modes button[aria-pressed="true"]{ background:var(--red); color:var(--paper); }
html[data-mode="night"] .modes button[aria-pressed="true"]{ color:#000; }
.meta{ display:flex; align-items:center; gap:10px; font-size:12px; letter-spacing:.1em; }
.meta .dot{ width:9px; height:9px; background:var(--red); border-radius:50%; animation:pulse 2s infinite; }
@keyframes pulse{ 50%{ opacity:.25; } }

/* ── hero ─────────────────────────────────────────────── */
main{ max-width:var(--maxw); margin:0 auto; padding:0 var(--gut); }
.hero{
  display:grid; grid-template-columns:1.05fr 1fr; gap:clamp(20px,4vw,64px);
  align-items:center; padding:clamp(28px,5vw,72px) 0;
}
.hero__art{ position:relative; border:3px solid var(--line); box-shadow:var(--shadow); background:var(--paper2); }
.hero__art svg{ display:block; width:100%; height:auto; }
.hero__art figcaption{
  position:absolute; left:0; bottom:0; padding:5px 10px; font-size:10px; letter-spacing:.14em;
  background:var(--ink); color:var(--paper);
}
.kicker{ font-size:11px; letter-spacing:.3em; text-transform:uppercase; color:var(--dim); margin-bottom:14px; }
.hero__type h1{
  font-size:clamp(60px,11vw,148px); line-height:.86; letter-spacing:-.03em; font-weight:800;
  text-transform:uppercase;
}
.hero__type h1 em{ display:block; font-style:normal; font-size:clamp(20px,3.4vw,44px); letter-spacing:.4em; color:var(--red); margin-top:10px; }
.sub{ margin-top:18px; font-size:clamp(15px,1.6vw,20px); font-weight:600; }
.tiny{ margin-top:18px; font-size:11.5px; line-height:1.9; letter-spacing:.06em; color:var(--dim); border-left:5px solid var(--red); padding-left:12px; }

/* ── wedge band ───────────────────────────────────────── */
.wedge{
  border-top:3px solid var(--line); border-bottom:3px solid var(--line);
  background:var(--red); color:var(--paper); overflow:hidden; margin:0 calc(-50vw + 50%);
}
html[data-mode="night"] .wedge{ background:#fff; color:#000; }
.wedge__row{ display:flex; gap:34px; padding:9px 0; white-space:nowrap; font-size:12px; letter-spacing:.28em; animation:slide 26s linear infinite; }
@keyframes slide{ to{ transform:translateX(-50%); } }

/* ── radio / phonograph ───────────────────────────────── */
.radio{ padding:clamp(34px,6vw,84px) 0; }
.radio__head{ margin-bottom:clamp(20px,3vw,40px); border-bottom:3px solid var(--line); padding-bottom:18px; }
.radio__head h2,.gallery__head h2,.chronicle__head h2{
  font-size:clamp(34px,5.6vw,72px); line-height:.95; letter-spacing:-.02em; font-weight:800; text-transform:uppercase;
}
.radio__head h2 em,.gallery__head h2 em,.chronicle__head h2 em{
  font-style:normal; display:block; font-size:clamp(16px,2.2vw,28px); letter-spacing:.36em; color:var(--red); margin-top:8px;
}
.lede{ margin-top:14px; max-width:62ch; color:var(--dim); }

.radio__body{ display:grid; grid-template-columns:minmax(0,1fr) minmax(0,1.15fr); gap:clamp(22px,4vw,58px); align-items:start; }

/* deck */
.deck{ text-align:center; }
.platter{
  position:relative; width:100%; max-width:440px; margin:0 auto; aspect-ratio:1/1;
  border:3px solid var(--line); background:
    repeating-linear-gradient(45deg,var(--shade) 0 6px,transparent 6px 12px), var(--paper2);
  padding:14px; box-shadow:var(--shadow);
}
.vinyl{
  position:absolute; inset:14px; border-radius:50%;
  background:
    repeating-radial-gradient(circle at 50% 50%,
      #141414 0 1.5px, #1f1f1f 1.5px 3px, #0e0e0e 3px 4.6px, #242424 4.6px 6px),
    radial-gradient(circle at 32% 26%, rgba(255,255,255,.16), transparent 42%),
    #0b0b0b;
  box-shadow: inset 0 0 0 3px #000, inset 0 0 60px rgba(0,0,0,.9), 0 12px 26px rgba(0,0,0,.4);
  display:grid; place-items:center;
  animation:spin 3.4s linear infinite; animation-play-state:paused;
}
.radio.is-playing .vinyl{ animation-play-state:running; }
@keyframes spin{ to{ transform:rotate(360deg); } }
.grooves{ position:absolute; inset:0; border-radius:50%; background:
  repeating-radial-gradient(circle at 50% 50%, transparent 0 7px, rgba(255,255,255,.05) 7px 8px); }
.label{
  position:relative; width:34%; aspect-ratio:1; border-radius:50%; background:var(--red); color:var(--paper);
  display:grid; place-content:center; gap:3px; text-align:center; border:3px solid #0b0b0b;
}
html[data-mode="night"] .label{ color:#000; }
.label__top,.label__bot{ font-size:8.5px; letter-spacing:.16em; opacity:.85; }
.label__mid{ font-size:13px; font-weight:800; letter-spacing:.05em; }
.spindle{ position:absolute; left:50%; top:50%; width:14px; height:14px; margin:-7px 0 0 -7px; border-radius:50%; background:#ddd; border:2px solid #000; z-index:3; }

.tonearm{
  position:absolute; top:1%; right:2%; width:64px; height:94%;
  transform-origin:50% 6%; transform:rotate(-9deg);
  transition:transform 1.05s cubic-bezier(.34,.85,.2,1); z-index:5; pointer-events:none;
}
.radio.is-playing .tonearm{ transform:rotate(14deg); }
.tonearm .pivot{ position:absolute; top:0; left:50%; transform:translateX(-50%); width:46px; height:46px; border-radius:50%; background:var(--ink); border:3px solid var(--line); }
.tonearm .pivot::after{ content:""; position:absolute; inset:13px; border-radius:50%; background:var(--paper); }
.tonearm .arm{
  position:absolute; top:26px; left:50%; transform:translateX(-50%); width:10px; height:66%;
  background:linear-gradient(90deg,#9a9a9a, #f2f2f2 45%, #8a8a8a); border:2px solid var(--line);
}
.tonearm .head{
  position:absolute; bottom:13%; left:50%; transform:translateX(-50%) rotate(13deg);
  width:30px; height:46px; background:var(--ink); border:3px solid var(--line);
}
.tonearm .head::after{ content:""; position:absolute; left:50%; bottom:-6px; transform:translateX(-50%); width:4px; height:12px; background:var(--paper); }
.deck__badge{ margin-top:16px; font-size:11px; letter-spacing:.24em; color:var(--dim); }

/* console */
.console{ border:3px solid var(--line); box-shadow:var(--shadow); background:var(--plate); padding:clamp(16px,2.4vw,26px); }
.now__mode{ font-size:10.5px; letter-spacing:.24em; color:var(--dim); }
.now h3{ font-size:clamp(26px,3.6vw,44px); line-height:1.02; letter-spacing:-.02em; margin:8px 0 6px; font-weight:800; }
.now__sub{ font-size:12px; letter-spacing:.14em; color:var(--red); }
.now__note{ margin-top:10px; font-size:13px; color:var(--dim); }
#viz{ width:100%; height:72px; margin:16px 0 6px; display:block; border-top:2px solid var(--line); border-bottom:2px solid var(--line); }

.progress{ margin:14px 0 10px; }
.bar{ position:relative; height:16px; border:2px solid var(--line); background:var(--paper2); cursor:pointer; }
.fill{ position:absolute; inset:0 auto 0 0; width:0%; background:var(--red); }
.knob{ position:absolute; top:-4px; left:0%; width:6px; height:20px; background:var(--ink); transform:translateX(-3px); }
.times{ display:flex; justify-content:space-between; font-size:11px; margin-top:6px; letter-spacing:.1em; }

.controls{ display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin:6px 0 20px; }
.controls button{
  width:56px; height:48px; border:3px solid var(--line); background:var(--paper); font-size:14px; letter-spacing:.05em;
  transition:transform .12s, background .18s, color .18s;
}
.controls button:hover{ background:var(--shade); }
.controls button:active{ transform:translate(2px,2px); }
.controls .play{ width:96px; height:56px; background:var(--red); color:var(--paper); font-size:20px; border-color:var(--line); }
html[data-mode="night"] .controls .play{ color:#000; }
.controls .play:hover{ background:var(--red-d); }
.vol{ margin-left:auto; display:flex; align-items:center; gap:10px; font-size:11px; letter-spacing:.16em; }
.vol input{ width:130px; accent-color:var(--red); }

.playlist__tabs{ display:flex; border-bottom:3px solid var(--line); }
.playlist__tabs button{ padding:9px 16px; font-size:12px; letter-spacing:.16em; font-weight:700; border:2px solid transparent; border-bottom:0; }
.playlist__tabs button[aria-selected="true"]{ background:var(--ink); color:var(--paper); }
html[data-mode="night"] .playlist__tabs button[aria-selected="true"]{ color:#000; }

.tracks{ max-height:314px; overflow:auto; }
.tracks li{
  display:grid; grid-template-columns:34px 1fr auto; gap:12px; align-items:baseline;
  padding:9px 8px; border-bottom:1px dashed var(--grid); cursor:pointer; transition:background .15s,padding-left .15s;
}
.tracks li:hover{ background:var(--shade); padding-left:14px; }
.tracks li.on{ background:var(--red); color:var(--paper); }
html[data-mode="night"] .tracks li.on{ color:#000; }
.tracks .no{ font-family:var(--mono); font-size:11px; opacity:.7; }
.tracks .tt{ font-weight:600; font-size:15px; }
.tracks .tt i{ display:block; font-style:normal; font-size:11.5px; font-weight:400; letter-spacing:.06em; opacity:.7; }
.tracks .du{ font-family:var(--mono); font-size:11px; opacity:.7; }
.playlist__note{ margin-top:12px; font-size:10.5px; letter-spacing:.06em; color:var(--dim); }

/* ── gallery ──────────────────────────────────────────── */
.gallery{ padding:clamp(30px,5vw,70px) 0; border-top:3px solid var(--line); }
.gallery__head{ margin-bottom:clamp(20px,3vw,38px); }
.plates{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:clamp(18px,2.6vw,32px); }
.plate{ border:3px solid var(--line); background:var(--plate); box-shadow:var(--shadow); display:flex; flex-direction:column; }
.plate svg{ display:block; width:100%; height:auto; border-bottom:3px solid var(--line); }
.plate figcaption{ padding:14px 16px 20px; }
.tag{ font-size:10px; letter-spacing:.24em; color:var(--dim); }
.plate h3{ font-size:22px; margin:7px 0 8px; font-weight:800; letter-spacing:-.01em; }
.plate h3 em{ display:block; font-style:normal; font-size:10.5px; letter-spacing:.16em; color:var(--red); margin-top:5px; font-weight:400; }
.plate p{ font-size:13px; color:var(--dim); }
.svg-type{ font-family:var(--sans); font-weight:800; font-size:38px; letter-spacing:.06em; }
.svg-type--sm{ font-size:22px; letter-spacing:.08em; }
.svg-mono{ font-family:var(--mono); font-size:15px; }

/* ── chronicle ────────────────────────────────────────── */
.chronicle{ padding:clamp(28px,4.4vw,60px) 0; border-top:3px solid var(--line); }
.chronicle__head{ margin-bottom:22px; }
.timeline{ display:flex; flex-wrap:wrap; gap:0; border-top:2px solid var(--line); border-left:2px solid var(--line); }
.timeline li{ flex:1 1 160px; border-right:2px solid var(--line); border-bottom:2px solid var(--line); padding:14px 14px 18px; }
.timeline li b{ display:block; font-size:26px; font-weight:700; letter-spacing:-.02em; }
.timeline li span{ display:block; font-size:11px; letter-spacing:.06em; color:var(--dim); margin-top:6px; }

/* ── footer ───────────────────────────────────────────── */
.foot{ margin:0 calc(-50vw + 50%); border-top:3px solid var(--line); background:var(--paper2); padding:clamp(28px,5vw,60px) var(--gut); text-align:center; }
.foot__big{ font-size:clamp(40px,9vw,110px); font-weight:800; letter-spacing:-.02em; line-height:.9; display:flex; align-items:center; justify-content:center; gap:.25em; }
.foot__big span:first-of-type{ color:var(--red); font-size:.5em; }
.foot__big #year{ font-size:.34em; letter-spacing:.2em; }
.foot__small{ margin-top:14px; font-size:11.5px; letter-spacing:.2em; }
.foot__colophon{ margin-top:10px; font-size:10px; letter-spacing:.12em; color:var(--dim); }

/* ── responsive ───────────────────────────────────────── */
@media (max-width:1000px){
  .hero{ grid-template-columns:1fr; }
  .hero__art{ order:-1; }
  .radio__body{ grid-template-columns:1fr; }
  .platter{ max-width:380px; }
}
@media (max-width:640px){
  .topbar{ gap:10px; }
  .meta{ width:100%; }
  .modes button{ padding:6px 10px; }
  .tracks li{ grid-template-columns:26px 1fr auto; }
  .vol{ margin-left:0; }
}
@media (prefers-reduced-motion:reduce){
  *{ animation-duration:.001s !important; transition-duration:.001s !important; }
  .vinyl{ animation:none !important; }
}