:root {
  --font-display: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  --font-body: "Gill Sans", "Noto Sans", "Lucida Grande", sans-serif;
  --ink-strong: #1f2933;
  --ink-soft: #52606d;
  --surface: #f4f2ec;
  --surface-panel: #fffaf1;
  --surface-card: #fffdf8;
  --line-soft: #d9cdb7;
  --line-strong: #2f3e4d;
  --accent: #df5f2f;
  --accent-strong: #bb4522;
  --accent-alt: #1a7a80;
  --shadow-soft: 0 16px 30px rgba(31, 41, 51, 0.14);
  --shadow-lift: 0 28px 54px rgba(31, 41, 51, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--ink-strong);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 100% -20%, rgba(223, 95, 47, 0.22), transparent 44%),
    radial-gradient(circle at 8% 14%, rgba(26, 122, 128, 0.24), transparent 42%),
    linear-gradient(175deg, #f8f3e7 0%, #efe5d5 52%, #e9ddc8 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.2;
  background-image:
    linear-gradient(38deg, rgba(47, 62, 77, 0.08) 1px, transparent 1px),
    linear-gradient(-38deg, rgba(47, 62, 77, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: -1;
}

button,
input,
select {
  font: inherit;
}

.app {
  width: min(1320px, calc(100vw - 1rem));
  margin: 0.7rem auto 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.back-nav {
  display: flex;
  padding-left: 0.35rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 100vmax;
  border: 1px solid rgba(47, 62, 77, 0.25);
  background: rgba(255, 250, 241, 0.75);
  color: var(--ink-strong);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.94rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.back-link:hover,
.back-link:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 20px rgba(31, 41, 51, 0.14);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  flex-wrap: wrap;
  padding: clamp(1rem, 2vw, 1.45rem);
  border-radius: 1.7rem;
  border: 1px solid var(--line-soft);
  background: linear-gradient(152deg, rgba(255, 253, 248, 0.96), rgba(253, 244, 229, 0.95));
  box-shadow: var(--shadow-lift);
  animation: rise-in 320ms ease-out both;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  line-height: 0.95;
}

.hero p,
.hero .info p {
  margin: 0.3rem 0;
  color: var(--ink-soft);
  line-height: 1.5;
}

.hero-copy,
.hero-info {
  display: grid;
  gap: 0.15rem;
}

main {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(270px, 320px);
  gap: 1rem;
  align-items: start;
}

.board-panel {
  display: grid;
  gap: 0.85rem;
}

.play-area {
  display: grid;
  gap: 0.85rem;
}

.board-container {
  width: min(100%, 84vh, 760px);
  aspect-ratio: 1;
  margin-inline: auto;
  display: grid;
  place-items: center;
  border-radius: 1.7rem;
  border: 1px solid var(--line-soft);
  padding: clamp(0.35rem, 0.8vw, 0.65rem);
  background: rgba(255, 253, 248, 0.72);
  box-shadow: var(--shadow-soft);
}

.board {
  width: 100%;
  height: 100%;
  position: relative;
  border-radius: 1.3rem;
  background:
    radial-gradient(circle at 16% 14%, rgba(26, 122, 128, 0.26), rgba(26, 122, 128, 0) 34%),
    radial-gradient(circle at 88% 88%, rgba(223, 95, 47, 0.24), rgba(223, 95, 47, 0) 32%),
    linear-gradient(160deg, #2f3e4d 0%, #21303e 100%);
  overflow: hidden;
}

.board::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: calc(100% / var(--cols)) calc(100% / var(--rows));
  background-image:
    linear-gradient(rgba(236, 248, 255, 0.25) 1px, transparent 1px),
    linear-gradient(90deg, rgba(236, 248, 255, 0.25) 1px, transparent 1px);
  pointer-events: none;
}

.board::after {
  content: "";
  position: absolute;
  width: 16%;
  right: 0;
  top: calc(var(--exit-row) * 100% / var(--rows));
  height: calc(100% / var(--rows));
  background: rgba(255, 250, 241, 0.38);
  border-left: 2px dashed rgba(255, 250, 241, 0.95);
  pointer-events: none;
}

.car {
  position: absolute;
  border-radius: 0.95rem;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.32),
    0 12px 24px rgba(19, 28, 35, 0.35);
  display: grid;
  place-items: center;
  color: #fffaf4;
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 1.3vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 3px rgba(15, 23, 42, 0.45);
  cursor: grab;
  user-select: none;
  touch-action: none;
  transition: transform 130ms ease, box-shadow 130ms ease;
}

.car:active {
  cursor: grabbing;
}

.car.selected {
  transform: scale(1.02);
  box-shadow:
    0 0 0 4px rgba(255, 250, 241, 0.48),
    inset 0 0 0 1px rgba(255, 255, 255, 0.44);
}

.car.target {
  background: linear-gradient(160deg, #d74f24, #bf2f18);
}

.status-panel,
.control-card {
  border-radius: 1.2rem;
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(255, 253, 248, 0.96), rgba(253, 247, 236, 0.94));
  padding: 0.95rem;
  box-shadow: var(--shadow-soft);
}

.status-panel {
  display: grid;
  gap: 0.65rem;
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.85rem;
}

.status-row span {
  color: var(--ink-soft);
  font-weight: 600;
}

.status-row strong {
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.status-panel p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.45;
}

.controls {
  display: grid;
  gap: 0.85rem;
}

.control-card h2 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 1.15rem;
}

.card-head {
  display: flex;
  align-items: center;
}

label {
  display: grid;
  gap: 0.36rem;
  margin-bottom: 0.8rem;
  color: var(--ink-soft);
  font-weight: 600;
}

input[type="number"],
select {
  width: 100%;
  min-height: 2.7rem;
  padding: 0.65rem 0.8rem;
  border-radius: 0.8rem;
  background: var(--surface-card);
  border: 1px solid var(--line-soft);
  color: var(--ink-strong);
}

button {
  width: 100%;
  min-height: 2.8rem;
  border: none;
  border-radius: 0.86rem;
  padding: 0.7rem 1rem;
  background: linear-gradient(130deg, var(--accent), var(--accent-strong));
  color: #fffaf4;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 12px 18px rgba(187, 69, 34, 0.25);
  transition: transform 150ms ease, filter 150ms ease;
}

button:hover {
  transform: translateY(-1px);
  filter: saturate(1.08) brightness(1.03);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
.back-link:focus-visible {
  outline: 3px solid rgba(26, 122, 128, 0.55);
  outline-offset: 3px;
}

ul {
  padding-left: 1.1rem;
  margin: 0;
  color: var(--ink-soft);
}

li {
  margin-bottom: 0.55rem;
  line-height: 1.45;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(25, 39, 50, 0.76);
  backdrop-filter: blur(2px);
  display: grid;
  place-items: center;
  padding: 1rem;
  z-index: 20;
}

.overlay.hidden {
  display: none;
}

.overlay-panel {
  background: linear-gradient(145deg, rgba(255, 253, 248, 0.98), rgba(255, 245, 230, 0.97));
  border: 1px solid var(--line-soft);
  border-radius: 1.45rem;
  padding: 1.5rem;
  width: min(450px, 100%);
  text-align: center;
  box-shadow: var(--shadow-lift);
}

.overlay-panel h2 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.04;
}

.overlay-panel p {
  margin: 0 0 1rem;
  color: var(--ink-soft);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  main {
    grid-template-columns: 1fr;
  }

  .board-container {
    width: min(100%, 90vh, 760px);
  }
}

@media (max-width: 620px) {
  .app {
    width: calc(100vw - 0.5rem);
    margin-top: 0.4rem;
    gap: 0.7rem;
  }

  .hero,
  .overlay-panel,
  .status-panel,
  .control-card {
    padding: 0.8rem;
    border-radius: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0s !important;
  }
}