/*
  AV LÜ™ Answer Trail Visual System v2.2.0
  Designed, created, and owned by AVLU.
  Front-end presentation only.
  © 2026 AVLU. All rights reserved.
*/

.avlu-answer-rail {
  --trail-ink: #07101d;
  --trail-paper: #f4f0e6;
  --trail-blue: #5f91ff;
  --trail-red: #ed3f35;
  --trail-green: #147955;
  position: fixed;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 1200;
  width: min(calc(100% - 32px), 980px);
  min-height: 72px;
  display: grid;
  grid-template-columns: minmax(230px, 1.35fr) repeat(2, minmax(120px, 0.55fr)) minmax(132px, 0.62fr);
  align-items: stretch;
  border: 1px solid rgba(255, 255, 255, 0.24);
  color: #fff;
  background:
    linear-gradient(90deg, rgba(95, 145, 255, 0.12), transparent 34%),
    rgba(5, 12, 22, 0.97);
  box-shadow:
    0 2px 0 rgba(255, 255, 255, 0.08) inset,
    0 10px 0 rgba(0, 0, 0, 0.2),
    0 30px 74px rgba(0, 0, 0, 0.46);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, calc(100% + 42px)) scale(0.98);
  transition: opacity 180ms ease, transform 260ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.avlu-answer-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, transparent 0 48px, rgba(255, 255, 255, 0.035) 49px);
}

.avlu-answer-rail[data-state="visible"] {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, 0) scale(1);
}

.avlu-answer-rail__return,
.avlu-answer-rail__math {
  position: relative;
  z-index: 1;
  border: 0;
  color: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.avlu-answer-rail__return {
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 3px;
  padding: 12px 20px;
  text-align: left;
  background: transparent;
}

.avlu-answer-rail__return > span {
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.avlu-answer-rail__return strong {
  color: var(--trail-red);
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 1.45rem;
  letter-spacing: -0.045em;
  line-height: 1;
}

.avlu-answer-rail__return strong span {
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.avlu-answer-rail__metric {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 12px 18px;
  border-left: 1px solid rgba(255, 255, 255, 0.13);
}

.avlu-answer-rail__metric span {
  color: rgba(255, 255, 255, 0.54);
  font-size: 0.62rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.avlu-answer-rail__metric strong {
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
}

.avlu-answer-rail__metric.is-gap strong {
  color: #ff8d86;
}

.avlu-answer-rail__math {
  margin: 10px;
  padding: 0 18px;
  border: 1px solid #fff;
  color: var(--trail-ink);
  background: var(--trail-paper);
  box-shadow: 0 5px 0 rgba(255, 255, 255, 0.16);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  transition: transform 110ms ease, box-shadow 110ms ease, background 110ms ease;
}

.avlu-answer-rail__return:hover,
.avlu-answer-rail__math:hover {
  background-color: rgba(255, 255, 255, 0.075);
}

.avlu-answer-rail__math:hover {
  color: #fff;
  background: #3157c8;
}

.avlu-answer-rail__return:active,
.avlu-answer-rail__math:active {
  transform: translateY(3px);
}

.avlu-answer-rail__math:active {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.12);
}

.avlu-answer-rail__return:focus-visible,
.avlu-answer-rail__math:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

.avlu-answer-result__actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.avlu-answer-result__actions button {
  min-height: 48px;
}

.avlu-answer-result__actions [data-avlu-open-math] {
  color: #fff;
  background: #07101d;
}

.avlu-answer-result__actions [data-avlu-copy-offer] {
  color: #07101d;
  background: #fffdf7;
}

.avlu-answer-result__actions [data-avlu-copy-offer][data-state="copied"] {
  border-color: var(--trail-green);
  color: #fff;
  background: var(--trail-green);
  box-shadow: 0 4px 0 #0b4d37;
}

.avlu-answer-result__actions [data-avlu-answer-reset] {
  grid-column: 1 / -1;
  min-height: 34px;
  border: 0;
  color: #4f5a67;
  background: transparent;
  box-shadow: none;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.avlu-answer-result__actions [data-avlu-answer-reset]:hover {
  color: #07101d;
  background: rgba(8, 17, 31, 0.05);
}

.avlu-math-snap {
  position: relative;
  margin: 0 0 14px;
  padding: clamp(18px, 2.6vw, 28px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #fff;
  background:
    linear-gradient(100deg, rgba(95, 145, 255, 0.16), transparent 38%),
    #07101d;
  box-shadow: 0 12px 0 rgba(8, 17, 31, 0.14);
}

.avlu-math-snap::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.16;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(255, 255, 255, 0.14) 40px),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(255, 255, 255, 0.09) 40px);
}

.avlu-math-snap__label,
.avlu-math-snap__equation,
.avlu-math-snap p {
  position: relative;
  z-index: 1;
}

.avlu-math-snap__label {
  display: inline-flex;
  margin-bottom: 12px;
  color: #a9c2ff;
  font-size: 0.68rem;
  font-weight: 950;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.avlu-math-snap__equation {
  display: grid;
  grid-template-columns: repeat(7, max-content);
  align-items: end;
  gap: clamp(10px, 2vw, 24px);
}

.avlu-math-snap__equation > span {
  display: grid;
  gap: 4px;
}

.avlu-math-snap__equation small {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.63rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.avlu-math-snap__equation strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(1.05rem, 2vw, 1.45rem);
  line-height: 1;
}

.avlu-math-snap__equation b {
  color: rgba(255, 255, 255, 0.45);
  font-size: 1.5rem;
  line-height: 1;
}

.avlu-math-snap__equation .is-answer {
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.08);
}

.avlu-math-snap__equation .is-answer strong {
  color: #7da8ff;
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
}

.avlu-math-snap p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.76rem;
  line-height: 1.45;
}

.craft-number-row {
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.craft-number-row[data-math-step="active"] {
  transform: translateX(8px);
  background: rgba(95, 145, 255, 0.15);
  box-shadow: -4px 0 0 #3157c8;
}

.craft-number-row[data-math-step="done"] {
  background: rgba(95, 145, 255, 0.055);
}

.craft-number-aside[data-math-landed="true"] {
  box-shadow: 0 0 0 3px rgba(49, 87, 200, 0.18), 0 22px 48px rgba(8, 17, 31, 0.12);
}

.craft-number-aside[data-math-landed="true"] .craft-big-number {
  animation: avlu-answer-land 560ms cubic-bezier(0.2, 1.25, 0.35, 1);
}

@keyframes avlu-answer-land {
  0% { transform: translateY(14px) scale(0.9); filter: blur(2px); }
  58% { transform: translateY(-4px) scale(1.08); filter: blur(0); }
  100% { transform: translateY(0) scale(1); }
}

.avlu-carfax-details {
  margin-top: 22px;
  border-top: 2px solid #08111f;
  border-bottom: 1px solid rgba(8, 17, 31, 0.34);
  background: rgba(255, 255, 255, 0.28);
}

.avlu-carfax-details > summary {
  min-height: 76px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, auto) 40px;
  align-items: center;
  gap: 18px;
  padding: 14px 0;
  color: #08111f;
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

.avlu-carfax-details > summary::-webkit-details-marker {
  display: none;
}

.avlu-carfax-details > summary > span:first-child {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2.4vw, 2rem);
  font-weight: 700;
}

.avlu-carfax-details > summary strong {
  justify-self: end;
  font-size: 0.7rem;
  font-weight: 950;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.avlu-carfax-details__mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid #08111f;
  border-radius: 50%;
  font-family: Arial, sans-serif;
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 180ms ease, color 180ms ease, background 180ms ease;
}

.avlu-carfax-details[open] .avlu-carfax-details__mark {
  color: #fff;
  background: #08111f;
  transform: rotate(45deg);
}

.avlu-carfax-details .avlu-carfax-table-wrap {
  margin: 0;
  padding: 0 0 24px;
  animation: avlu-carfax-unfold 260ms ease both;
}

@keyframes avlu-carfax-unfold {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.avlu-carfax-details > summary:focus-visible {
  outline: 3px solid #3157c8;
  outline-offset: 5px;
}

@media (max-width: 760px) {
  .avlu-answer-rail {
    bottom: max(10px, env(safe-area-inset-bottom));
    width: calc(100% - 20px);
    min-height: 86px;
    grid-template-columns: minmax(0, 1.3fr) minmax(108px, 0.7fr);
    grid-template-areas:
      "answer math"
      "metrics math";
  }

  .avlu-answer-rail__return {
    grid-area: answer;
    padding: 10px 12px 3px;
  }

  .avlu-answer-rail__return > span {
    font-size: 0.56rem;
  }

  .avlu-answer-rail__return strong {
    font-size: 1.22rem;
  }

  .avlu-answer-rail__metric {
    min-width: 0;
    display: inline-grid;
    grid-template-columns: max-content max-content;
    align-items: center;
    gap: 5px;
    padding: 2px 12px 9px;
    border-left: 0;
  }

  .avlu-answer-rail__metric:nth-of-type(2) {
    grid-area: metrics;
    justify-self: start;
  }

  .avlu-answer-rail__metric.is-gap {
    grid-area: metrics;
    justify-self: end;
    margin-right: 4px;
  }

  .avlu-answer-rail__metric span {
    font-size: 0.52rem;
  }

  .avlu-answer-rail__metric strong {
    font-size: 0.76rem;
  }

  .avlu-answer-rail__math {
    grid-area: math;
    margin: 8px;
    padding: 0 10px;
  }

  .avlu-answer-result__actions {
    grid-template-columns: 1fr;
  }

  .avlu-answer-result__actions [data-avlu-answer-reset] {
    grid-column: auto;
  }

  .avlu-math-snap__equation {
    grid-template-columns: 1fr 22px 1fr;
    align-items: center;
  }

  .avlu-math-snap__equation > span {
    min-width: 0;
  }

  .avlu-math-snap__equation > b:nth-of-type(3) {
    display: none;
  }

  .avlu-math-snap__equation .is-answer {
    grid-column: 1 / -1;
    margin-top: 4px;
  }

  .avlu-carfax-details > summary {
    grid-template-columns: 1fr 38px;
    gap: 12px;
  }

  .avlu-carfax-details > summary strong {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: start;
  }

  .avlu-carfax-details__mark {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .avlu-answer-rail,
  .avlu-answer-rail__math,
  .avlu-answer-rail__return,
  .craft-number-row,
  .avlu-carfax-details__mark {
    transition: none;
  }

  .craft-number-aside[data-math-landed="true"] .craft-big-number,
  .avlu-carfax-details .avlu-carfax-table-wrap {
    animation: none;
  }
}