:root {
  --ev4x-la-bg: #070b18;
  --ev4x-la-card: rgba(255,255,255,.08);
  --ev4x-la-card2: rgba(255,255,255,.12);
  --ev4x-la-border: rgba(255,255,255,.16);
  --ev4x-la-text: #f8fafc;
  --ev4x-la-muted: #b9c4d3;
  --ev4x-la-accent: #8b5cf6;
  --ev4x-la-accent2: #06b6d4;
  --ev4x-la-good: #22c55e;
  --ev4x-la-bad: #ef4444;
  --ev4x-la-warn: #f59e0b;
}

.ev4x-la,
.ev4x-la * {
  box-sizing: border-box;
}

.ev4x-la {
  width: 100%;
  margin: 24px auto;
  color: var(--ev4x-la-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.ev4x-la-shell {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--ev4x-la-border);
  background:
    radial-gradient(circle at 12% 15%, rgba(139,92,246,.25), transparent 34%),
    radial-gradient(circle at 88% 10%, rgba(6,182,212,.20), transparent 32%),
    linear-gradient(145deg, #070b18, #10172a 58%, #0b1020);
  box-shadow: 0 24px 90px rgba(0,0,0,.34);
}

.ev4x-la-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.16) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .22;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 72%);
  pointer-events: none;
}

.ev4x-la-shell > * {
  position: relative;
  z-index: 1;
}

.ev4x-la h2,
.ev4x-la h3,
.ev4x-la p {
  margin-top: 0;
}

.ev4x-la-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 22px;
  align-items: stretch;
  margin-bottom: 24px;
}

.ev4x-la-kicker {
  color: #67e8f9;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 12px;
  margin-bottom: 8px;
}

.ev4x-la h2 {
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.04;
  letter-spacing: -0.05em;
  margin-bottom: 10px;
}

.ev4x-la-hero-text p:last-child {
  max-width: 870px;
  color: var(--ev4x-la-muted);
  line-height: 1.6;
  font-size: 16px;
  margin-bottom: 0;
}

.ev4x-la-hero-card,
.ev4x-la-panel,
.ev4x-la-main,
.ev4x-la-card,
.ev4x-la-summary-card,
.ev4x-la-log-wrap {
  border: 1px solid var(--ev4x-la-border);
  background: var(--ev4x-la-card);
  backdrop-filter: blur(14px);
  border-radius: 24px;
}

.ev4x-la-hero-card {
  min-height: 190px;
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
}

.ev4x-la-core {
  width: 96px;
  height: 96px;
  display: grid;
  place-items: center;
  border-radius: 28px;
  background: linear-gradient(135deg, var(--ev4x-la-accent), var(--ev4x-la-accent2));
  box-shadow: 0 0 42px rgba(139,92,246,.35);
  transform: rotate(8deg);
  margin-bottom: 10px;
}

.ev4x-la-core span {
  font-size: 58px;
  font-weight: 950;
  transform: rotate(-8deg);
}

.ev4x-la-hero-score strong {
  display: block;
  font-size: 32px;
  letter-spacing: -0.04em;
}

.ev4x-la-hero-score span {
  color: var(--ev4x-la-muted);
  font-size: 13px;
}

.ev4x-la-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 22px;
}

.ev4x-la-panel,
.ev4x-la-main {
  padding: 18px;
}

.ev4x-la-label {
  display: block;
  color: var(--ev4x-la-muted);
  font-weight: 800;
  font-size: 13px;
  margin: 13px 0 7px;
}

.ev4x-la-input {
  width: 100%;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.24);
  color: var(--ev4x-la-text);
  border-radius: 14px;
  padding: 12px 13px;
  outline: none;
}

.ev4x-la-input:focus {
  border-color: var(--ev4x-la-accent2);
  box-shadow: 0 0 0 4px rgba(6,182,212,.13);
}

.ev4x-la-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.ev4x-la-actions-secondary {
  margin-top: 10px;
}

.ev4x-la-btn {
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 14px;
  padding: 11px 13px;
  color: var(--ev4x-la-text);
  background: rgba(255,255,255,.08);
  font-weight: 900;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, opacity .15s ease;
}

.ev4x-la-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(255,255,255,.13);
}

.ev4x-la-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.ev4x-la-btn-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--ev4x-la-accent), var(--ev4x-la-accent2));
}

.ev4x-la-btn-soft {
  font-size: 13px;
  padding: 10px;
}

.ev4x-la-tip {
  margin-top: 17px;
  color: var(--ev4x-la-muted);
  background: rgba(0,0,0,.18);
  padding: 13px;
  border-radius: 16px;
  line-height: 1.55;
  font-size: 14px;
}

.ev4x-la-statusbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.ev4x-la-statusbar > div,
.ev4x-la-summary-card {
  padding: 12px;
  border-radius: 16px;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.10);
}

.ev4x-la-statusbar span,
.ev4x-la-summary-card span {
  display: block;
  color: var(--ev4x-la-muted);
  font-size: 12px;
  margin-bottom: 3px;
}

.ev4x-la-statusbar strong,
.ev4x-la-summary-card strong {
  font-size: 21px;
}

.ev4x-la-card {
  padding: clamp(18px, 3vw, 28px);
  min-height: 430px;
  display: flex;
  flex-direction: column;
}

.ev4x-la-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}

.ev4x-la-badge,
.ev4x-la-timer {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 7px 12px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.12);
  color: var(--ev4x-la-muted);
  font-weight: 900;
  font-size: 13px;
}

.ev4x-la-card h3 {
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.ev4x-la-question {
  color: var(--ev4x-la-text);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.55;
  padding: 16px;
  border-radius: 18px;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.10);
  margin-bottom: 16px;
  white-space: pre-wrap;
}

.ev4x-la-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: auto;
}

.ev4x-la-option {
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08);
  color: var(--ev4x-la-text);
  border-radius: 18px;
  padding: 15px;
  display: grid;
  grid-template-columns: 42px 1fr;
  align-items: center;
  gap: 12px;
  text-align: left;
  cursor: pointer;
  min-height: 76px;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}

.ev4x-la-option:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(255,255,255,.12);
  border-color: rgba(6,182,212,.5);
}

.ev4x-la-option:disabled {
  cursor: default;
}

.ev4x-la-option span {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.14);
  font-weight: 950;
}

.ev4x-la-option strong {
  font-size: 15px;
  line-height: 1.45;
}

.ev4x-la-option.is-correct {
  border-color: rgba(34,197,94,.8);
  background: rgba(34,197,94,.18);
}

.ev4x-la-option.is-wrong {
  border-color: rgba(239,68,68,.8);
  background: rgba(239,68,68,.18);
}

.ev4x-la-feedback {
  margin-top: 16px;
  border-radius: 18px;
  padding: 15px;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.14);
  line-height: 1.55;
}

.ev4x-la-feedback.good {
  background: rgba(34,197,94,.14);
  border-color: rgba(34,197,94,.45);
}

.ev4x-la-feedback.bad {
  background: rgba(239,68,68,.14);
  border-color: rgba(239,68,68,.45);
}

.ev4x-la-feedback.hint {
  background: rgba(245,158,11,.15);
  border-color: rgba(245,158,11,.45);
}

.ev4x-la-card-actions {
  margin-top: 16px;
  display: flex;
  justify-content: flex-end;
}

.ev4x-la-summary {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.ev4x-la-log-wrap {
  padding: 16px;
  margin-top: 14px;
  background: rgba(0,0,0,.14);
}

.ev4x-la-log {
  display: grid;
  gap: 8px;
}

.ev4x-la-log-item {
  display: grid;
  grid-template-columns: 70px 1fr 96px;
  gap: 10px;
  align-items: center;
  padding: 9px 11px;
  border-radius: 14px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--ev4x-la-muted);
  font-size: 13px;
}

.ev4x-la-log-item strong {
  color: var(--ev4x-la-text);
}

.ev4x-la-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 4px 8px;
  min-width: 66px;
  font-weight: 950;
  color: #fff;
  background: rgba(255,255,255,.15);
}

.ev4x-la-pill.good {
  background: var(--ev4x-la-good);
}

.ev4x-la-pill.bad {
  background: var(--ev4x-la-bad);
}

.ev4x-la-muted {
  color: var(--ev4x-la-muted);
  margin-bottom: 0;
}

@media (max-width: 960px) {
  .ev4x-la-hero,
  .ev4x-la-layout {
    grid-template-columns: 1fr;
  }

  .ev4x-la-hero-card {
    min-height: 150px;
  }
}

@media (max-width: 680px) {
  .ev4x-la-shell {
    padding: 14px;
    border-radius: 20px;
  }

  .ev4x-la-statusbar,
  .ev4x-la-summary,
  .ev4x-la-options,
  .ev4x-la-actions {
    grid-template-columns: 1fr;
  }

  .ev4x-la-card-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .ev4x-la-log-item {
    grid-template-columns: 1fr;
  }
}