/* ===== DNK-PC · Конфигуратор (стиль Neon Arcade) ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0A0A12;
  --bg2: #10101E;
  --card: rgba(20, 20, 38, 0.7);
  --violet: #7A5CFF;
  --cyan: #00E5FF;
  --magenta: #FF2BD6;
  --green: #2AF598;
  --red: #FF5470;
  --text: #EAEAF6;
  --muted: #9292B0;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.55;
  overflow-x: hidden;
  cursor: none;
}
a, button { cursor: none; }
::selection { background: var(--magenta); color: #fff; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(var(--violet), var(--cyan)); border-radius: 5px; }

.grid-floor {
  position: fixed; inset: auto 0 0 0; height: 30vh; z-index: 0;
  perspective: 380px; overflow: hidden; pointer-events: none;
  mask-image: linear-gradient(transparent, #000 55%);
  -webkit-mask-image: linear-gradient(transparent, #000 55%);
}
.grid-floor-inner {
  position: absolute; inset: -120% -50% -100% -50%;
  background-image:
    linear-gradient(rgba(122,92,255,.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.3) 1px, transparent 1px);
  background-size: 46px 46px;
  transform-origin: 50% 100%;
  transform: rotateX(62deg);
  animation: gridflow 5.5s linear infinite;
}
@keyframes gridflow { from { background-position: 0 0; } to { background-position: 0 46px; } }

.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 200; pointer-events: none;
  border-radius: 50%; transform: translate(-50%, -50%);
}
.cursor-dot { width: 8px; height: 8px; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.cursor-ring {
  width: 38px; height: 38px;
  border: 1.5px solid rgba(122,92,255,.75);
  transition: width .25s, height .25s, border-color .25s;
}
.cursor-ring.hover { width: 56px; height: 56px; border-color: var(--magenta); }

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; gap: 32px;
  padding: 16px 4vw;
  background: rgba(10,10,18,.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(122,92,255,.25);
}
.logo-link {
  display: inline-block;
  text-decoration: none;
  border-radius: 8px;
  transition: filter .2s, transform .2s;
}
.logo-link:hover { filter: brightness(1.25) drop-shadow(0 0 10px rgba(0,229,255,.5)); }
.logo-link:active { transform: scale(.97); }
.logo { font-family: var(--font-display); font-weight: 900; font-size: 22px; color: #fff; }
.logo span { color: var(--cyan); text-shadow: 0 0 12px var(--cyan); }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--muted); text-decoration: none;
}
.nav-links a:hover, .nav-links a.active { color: #fff; text-shadow: 0 0 10px var(--cyan); }
.nav-phone { font-weight: 700; color: var(--text); text-decoration: none; }

.page { position: relative; z-index: 1; max-width: 1280px; margin: 0 auto; padding: 130px 4vw 80px; }

.hero-cfg { margin-bottom: 44px; }
.hero-cfg h1 {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(30px, 5vw, 58px);
  text-transform: uppercase; letter-spacing: 2px; color: #fff;
  text-shadow: 0 0 24px rgba(122,92,255,.5);
}
.hero-cfg h1 span {
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-cfg p { color: var(--muted); max-width: 640px; margin-top: 12px; font-size: 19px; }

.cfg-layout { display: grid; grid-template-columns: 1fr 360px; gap: 30px; align-items: start; }

/* шаги */
.cfg-steps { display: flex; flex-direction: column; gap: 14px; }
.cfg-step {
  background: var(--card);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.cfg-step.open { border-color: var(--cyan); box-shadow: 0 0 24px -8px rgba(0,229,255,.35); }
.cfg-step.done { border-color: rgba(42,245,152,.4); }
.step-head {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 22px;
  cursor: none;
  user-select: none;
}
.step-head h3 {
  font-family: var(--font-display); font-size: 14px; letter-spacing: 1.5px;
  text-transform: uppercase; color: #fff;
  display: flex; align-items: center; gap: 12px;
  flex: 1;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 8px;
  background: rgba(122,92,255,.18);
  border: 1px solid rgba(122,92,255,.55);
  color: var(--violet);
  font-size: 13px;
}
.cfg-step.open .step-num { background: rgba(0,229,255,.14); border-color: var(--cyan); color: var(--cyan); }
.cfg-step.done .step-num { background: rgba(42,245,152,.12); border-color: var(--green, #2AF598); color: var(--green); }
.step-chosen { font-size: 14px; color: var(--muted); flex: 1.2; text-align: right; padding-right: 8px; }
.step-chosen.has { color: var(--green); }
.step-arrow { color: var(--muted); transition: transform .25s; }
.cfg-step.open .step-arrow { transform: rotate(180deg); }

.step-body { display: none; padding: 4px 22px 20px; }
.cfg-step.open .step-body { display: block; }
.step-toolbar { display: flex; gap: 10px; margin-bottom: 12px; }
.step-toolbar input, .step-toolbar select {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(122,92,255,.35);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
}
.step-toolbar input { flex: 1; }
.step-toolbar input:focus { border-color: var(--cyan); }

.opts-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; max-height: 420px; overflow-y: auto; padding-right: 6px; }
.opts-empty { grid-column: 1 / -1; color: var(--muted); font-size: 15px; padding: 12px 0; }
.opt {
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(255,255,255,.02);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  text-align: left;
  cursor: none;
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.opt b { display: block; font-size: 15.5px; margin-bottom: 2px; }
.opt small { display: block; color: var(--muted); font-size: 12.5px; margin-bottom: 5px; }
.opt .p { color: var(--cyan); font-size: 13px; }
.opt:hover { border-color: rgba(122,92,255,.6); background: rgba(122,92,255,.08); }
.opt.sel {
  border-color: var(--green);
  background: rgba(42,245,152,.1);
  box-shadow: 0 0 16px -6px rgba(42,245,152,.5);
}
.opt.sel::after { content: ' ✓ выбрано'; color: var(--green); font-size: 12px; }
.opt.incompatible { opacity: .45; }
.opt.incompatible::after {
  content: '⚠ не совместимо';
  display: block;
  color: var(--red);
  font-size: 12px;
  margin-top: 3px;
}
.opts-more {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 8px;
  border: 1px dashed rgba(255,255,255,.18);
  border-radius: 8px;
}

/* боковая колонка */
.cfg-side { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 16px; }
.panel {
  background: var(--card);
  border: 1px solid rgba(122,92,255,.3);
  border-radius: 14px;
  padding: 24px 24px 20px;
  backdrop-filter: blur(8px);
}
.panel h3 {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 2px;
  color: var(--muted); margin-bottom: 16px; text-transform: uppercase;
}
.watt-row { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.watt span { display: block; color: var(--muted); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; }
.watt b { font-family: var(--font-display); font-size: 20px; color: #fff; text-shadow: 0 0 14px rgba(0,229,255,.45); }
.psu-bar { height: 12px; background: #0c1a22; border: 1px solid rgba(122,92,255,.35); border-radius: 6px; overflow: hidden; margin-bottom: 8px; }
.psu-bar i {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 12px rgba(0,229,255,.5);
  transition: width .6s cubic-bezier(.2,.8,.2,1), background .4s;
}
.psu-bar i.over { background: linear-gradient(90deg, var(--red), var(--magenta)); }
.psu-bar-caption { color: var(--muted); font-size: 13px; margin-bottom: 8px; }

.issues { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.issues li {
  font-size: 14px; line-height: 1.45;
  color: #FFD3DC;
  background: rgba(255,84,112,.1);
  border: 1px solid rgba(255,84,112,.35);
  border-radius: 8px;
  padding: 9px 12px;
}
.ok-badge {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 1.5px;
  color: var(--green);
  border: 1px solid rgba(42,245,152,.4);
  background: rgba(42,245,152,.08);
  border-radius: 8px;
  padding: 10px 12px;
  text-align: center;
}

.total-price { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 14px; }
.total-price span { color: var(--muted); font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase; }
.total-price b { font-family: var(--font-display); font-size: 24px; color: #fff; text-shadow: 0 0 18px rgba(0,229,255,.55); }
.picked { list-style: none; display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.picked li { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; border-bottom: 1px dashed rgba(255,255,255,.12); padding: 6px 0; }
.picked span { color: var(--muted); flex-shrink: 0; }
.picked b { font-weight: 600; text-align: right; }
.picked b.no { color: var(--muted); font-weight: 400; }

/* кнопки */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px; letter-spacing: 2px; text-transform: uppercase;
  padding: 15px 30px;
  border: none; border-radius: 6px;
  transition: transform .2s, box-shadow .3s;
}
.btn-primary {
  background: linear-gradient(120deg, var(--violet), var(--magenta));
  color: #fff;
  box-shadow: 0 0 22px rgba(122,92,255,.45);
  margin-top: 10px;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 34px rgba(122,92,255,.7); }
.btn-primary[disabled] { opacity: .5; box-shadow: none; }
.btn-ghost {
  background: transparent; color: var(--cyan);
  border: 1.5px solid rgba(0,229,255,.55);
  width: 100%;
}
.btn-ghost:hover { background: rgba(0,229,255,.1); }
.submit-msg { min-height: 24px; font-size: 15px; color: var(--cyan); margin-top: 8px; }
.submit-msg.err { color: var(--red); }

/* футер */
.footer {
  position: relative; z-index: 1;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  padding: 34px 4vw; border-top: 1px solid rgba(122,92,255,.25);
  color: var(--muted); font-size: 13px;
}
.footer div:last-child { color: var(--cyan); }

/* модалка */
.modal-overlay {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(5,5,12,.75);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal-overlay[hidden] { display: none; }
.modal {
  width: 100%; max-width: 440px;
  background: var(--bg2);
  border: 1px solid rgba(122,92,255,.5);
  border-radius: 14px;
  padding: 30px 30px 24px;
  box-shadow: 0 0 60px -18px rgba(122,92,255,.6);
}
.modal h3 { font-family: var(--font-display); font-size: 16px; letter-spacing: 1.5px; margin-bottom: 18px; text-transform: uppercase; }
.modal input, .modal textarea {
  width: 100%;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(122,92,255,.35);
  border-radius: 8px;
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--font-body); font-size: 16px;
  outline: none; margin-bottom: 12px; resize: vertical;
}
.modal input:focus, .modal textarea:focus { border-color: var(--cyan); }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn-ghost { width: auto; }

@media (max-width: 1020px) {
  .cfg-layout { grid-template-columns: 1fr; }
  .cfg-side { position: static; }
  .opts-list { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { cursor: auto; font-size: 16px; }
  a, button { cursor: pointer; }
  .cursor-dot, .cursor-ring { display: none; }
  .nav {
    position: sticky;
    flex-wrap: wrap;
    gap: 12px 16px;
    padding: calc(12px + env(safe-area-inset-top, 0px)) 16px 12px;
  }
  .logo { white-space: nowrap; font-size: 20px; }
  .nav-phone { margin-inline-start: auto; font-size: 15px; white-space: nowrap; }
  .nav-links { order: 3; width: 100%; margin-inline-start: 0; gap: 14px; overflow-x: auto; scrollbar-width: none; }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: 10px; letter-spacing: 1px; white-space: nowrap; }
  .page { padding: 112px 16px 48px; }
  .hero-cfg { margin-bottom: 28px; }
  .hero-cfg h1 { font-size: clamp(28px, 9vw, 44px); line-height: 1.1; text-wrap: balance; }
  .hero-cfg p { font-size: 17px; line-height: 1.45; text-wrap: pretty; }
  .cfg-layout { gap: 20px; }
  .step-head { gap: 8px; padding: 14px 16px; }
  .step-head h3 { min-width: 0; font-size: 12px; gap: 8px; }
  .step-chosen { min-width: 0; overflow-wrap: anywhere; font-size: 12px; }
  .step-body { padding: 4px 16px 16px; }
  .step-toolbar { flex-direction: column; }
  .step-toolbar input, .step-toolbar select { width: 100%; min-height: 44px; font-size: 16px; }
  .opt { min-height: 44px; }
  .panel { padding: 18px 16px; }
  .footer { padding: 26px 16px calc(26px + env(safe-area-inset-bottom, 0px)); font-size: 13px; }
  .footer div { max-width: 100%; overflow-wrap: anywhere; }
  .modal { padding: 24px 18px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}