:root {
  color-scheme: dark;
  --gold: #d8be82;
  --muted: #94a69e;
  --ink: #0a1412;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #0b1513 radial-gradient(ellipse at 50% 42%, #25413955, transparent 65%);
  color: #f6f2e8;
  font-family: 'DM Sans', sans-serif;
}

button {
  font: inherit;
  cursor: pointer;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid #f8d991;
  outline-offset: 5px;
}

/* Header */

header {
  height: 88px;
  margin: 0 5%;
  border-bottom: 1px solid #ffffff12;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 26px;
  letter-spacing: .04em;
}

.brand span {
  color: var(--gold);
  margin-right: 12px;
}

nav {
  display: flex;
  gap: 10px;
}

/* Buttons */

.quiet {
  border: 1px solid #ffffff20;
  border-radius: 30px;
  background: transparent;
  color: #b9c6bd;
  padding: 10px 18px;
  font-size: 12px;
}

.quiet:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.primary {
  padding: 13px 29px;
  background: var(--gold);
  color: #1d291f;
  border: 1px solid #e4cc96;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 5px 22px #0003;
}

.primary:hover {
  background: #e9d39f;
}

/* Intro */

main {
  max-width: 1240px;
  margin: auto;
  padding: 35px 30px 0;
}

.intro {
  text-align: center;
}

.eyebrow {
  text-transform: uppercase;
  color: var(--gold);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .26em;
}

h1 {
  font: 500 clamp(38px, 5vw, 61px)/1.1 'Cormorant Garamond', Georgia, serif;
  margin: 12px 0;
}

h1 em {
  color: var(--gold);
  font-weight: 400;
}

.subtitle {
  color: #aab9b0;
  font-size: 13px;
  line-height: 1.7;
  margin: 0;
}

/* Progress steps */

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  margin: 22px 0 10px;
  color: #7b9085;
  font-size: 10px;
  letter-spacing: .12em;
}

.steps span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.steps b {
  border: 1px solid #5a7063;
  border-radius: 50%;
  height: 23px;
  width: 23px;
  display: grid;
  place-items: center;
  font-size: 10px;
}

.steps .active {
  color: var(--gold);
}

.steps .active b {
  border-color: var(--gold);
  background: #d8be8210;
}

.line {
  width: 45px;
  height: 1px;
  background: #ffffff15;
}

/* Table */

.game {
  position: relative;
  perspective: 1300px;
  margin: 0 auto;
  max-width: 1000px;
}

.table {
  position: relative;
  padding: 28px 60px 24px;
  min-height: 440px;
  border-radius: 44% 44% 30px 30px / 15% 15% 30px 30px;
  background: radial-gradient(ellipse at 50% 0, #2f5947, #183c2e 60%, #153126);
  border: 1px solid #7e98654a;
  box-shadow:
    0 17px 0 #0a1812,
    0 19px 0 #51634777,
    0 40px 70px #0008,
    inset 0 0 65px #071c1588;
  transform: rotateX(10deg);
  transform-style: preserve-3d;
}

.table::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px solid #a6ad6f28;
  border-radius: inherit;
  pointer-events: none;
}

.piles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  position: relative;
  transform-style: preserve-3d;
}

.pile {
  position: relative;
  border-radius: 16px;
  padding: 12px 14px 15px;
  transition: background .3s;
  transform-style: preserve-3d;
}

.pile:hover {
  background: #ffffff04;
}

.pile-label {
  text-align: center;
  font-size: 10px;
  color: #b5c6ad;
  letter-spacing: .22em;
  margin-bottom: 14px;
}

.cards {
  height: 283px;
  position: relative;
  transform-style: preserve-3d;
}

/* Cards */

.card {
  position: absolute;
  left: 50%;
  width: 108px;
  height: 146px;
  margin-left: -54px;
  border-radius: 7px;
  transform-style: preserve-3d;
  transition: transform .85s cubic-bezier(.22, .8, .18, 1), opacity .6s;
  box-shadow: 0 3px 7px #0005;
  background: #faf5e8;
  color: #243d32;
  border: 1px solid #e2d9bc;
  user-select: none;
}

.card.red {
  color: #aa4243;
}

.face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 6px;
  background: linear-gradient(125deg, #fffdf5, #ece5d6);
  overflow: hidden;
}

.corner {
  position: absolute;
  top: 7px;
  left: 9px;
  font: 600 19px/1 Georgia, serif;
  display: flex;
  gap: 4px;
  align-items: center;
}

.corner small {
  font-size: 15px;
}

.bottom {
  top: auto;
  left: auto;
  bottom: 7px;
  right: 9px;
  transform: rotate(180deg);
}

.pip {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font: 46px Georgia;
}

.back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  transform: rotateY(180deg);
  border: 5px solid #e9dfc1;
  border-radius: 6px;
  background: repeating-linear-gradient(45deg, #244f43 0 3px, #1c3b33 3px 7px);
  display: grid;
  place-items: center;
  color: #e4cc92;
  font-size: 38px;
}

.select {
  display: block;
  width: 100%;
  max-width: 190px;
  margin: 12px auto 0;
  padding: 11px 5px;
  background: #0c231a77;
  border: 1px solid #94a77765;
  border-radius: 6px;
  color: #e8e6cf;
  font-size: 12px;
  transition: .2s;
}

.select:hover {
  background: #d8be82;
  color: #14251c;
  border-color: #d8be82;
}

.select:disabled {
  opacity: .3;
  cursor: default;
}

.select kbd {
  float: right;
  margin-right: 8px;
  opacity: .5;
}

/* Status and controls below the table */

.below {
  text-align: center;
  position: relative;
  margin: 29px auto 20px;
  min-height: 66px;
}

.status {
  color: #e3d1a4;
  font-size: 13px;
  min-height: 20px;
}

#start {
  margin-top: 12px;
}

.hint {
  font-size: 11px;
  color: var(--muted);
  margin: 13px 0;
}

.footer {
  border-top: 1px solid #ffffff10;
  margin-top: 28px;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  color: #72877c;
  font-size: 10px;
  letter-spacing: .04em;
}

.footer a {
  color: #9aac9c;
  text-decoration: none;
}

/* Reveal */

.reveal {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: #10251ce8;
  border-radius: inherit;
  z-index: 40;
  transform: translateZ(90px);
}

.reveal.show {
  display: flex;
}

.reveal h2 {
  font: 36px 'Cormorant Garamond', serif;
  color: #f4e8cc;
  margin: 0;
}

.reveal p {
  font-size: 12px;
  color: #a5b9a6;
}

.hero-card {
  width: 134px;
  height: 182px;
  position: relative;
  transform-style: preserve-3d;
  animation: float 4s ease-in-out infinite;
  margin: 16px 0 20px;
}

.hero-card .card {
  position: relative;
  margin: 0;
  left: 0;
  width: 134px;
  height: 182px;
  box-shadow: 0 0 70px #d6bd6e44;
  animation: turn 1.2s ease both;
}

.hero-card .pip {
  font-size: 66px;
}

.spark {
  position: absolute;
  width: 3px;
  height: 3px;
  background: #d8be82;
  box-shadow: 0 0 10px #e6cd92;
  border-radius: 50%;
  pointer-events: none;
  animation: glimmer 5s infinite ease-in-out;
}

/* Help dialog */

.dialog {
  border: 1px solid #60705a;
  background: #14261e;
  color: #eee8d8;
  border-radius: 15px;
  max-width: 450px;
  width: 90%;
  padding: 30px;
  box-shadow: 0 25px 100px #0008;
}

.dialog::backdrop {
  background: #000a;
  backdrop-filter: blur(7px);
}

.dialog h2 {
  font: 32px Georgia;
  margin-top: 0;
}

.dialog p,
.dialog li {
  font-size: 14px;
  line-height: 1.8;
  color: #b8c4b5;
}

.dialog a {
  color: var(--gold);
}

#closeHelp {
  margin-top: 22px;
}

/* Animations */

@keyframes turn {
  from { transform: rotateY(180deg) scale(.7); }
  to   { transform: rotateY(0) scale(1); }
}

@keyframes float {
  50% { transform: translateY(-10px) rotateZ(2deg); }
}

@keyframes glimmer {
  50% { opacity: .15; transform: translateY(-30px); }
}

/* Small screens */

@media (max-width: 650px) {
  header {
    height: 68px;
  }

  .brand {
    font-size: 22px;
  }

  nav {
    gap: 5px;
  }

  .quiet {
    font-size: 10px;
    padding: 8px 10px;
  }

  main {
    padding: 24px 12px 0;
  }

  h1 {
    font-size: 42px;
  }

  .subtitle {
    font-size: 12px;
    padding: 0 8px;
  }

  .steps {
    gap: 7px;
    margin: 20px 0 16px;
    letter-spacing: 0;
  }

  .line {
    width: 15px;
  }

  .table {
    padding: 25px 8px 16px;
    min-height: 420px;
    border-radius: 30px;
    transform: rotateX(5deg);
  }

  .piles {
    gap: 2px;
  }

  .pile {
    padding: 7px 3px;
  }

  .pile-label {
    font-size: 9px;
  }

  .card {
    width: 84px;
    height: 120px;
    margin-left: -42px;
  }

  .corner {
    font-size: 18px;
    left: 6px;
    top: 5px;
  }

  .corner small {
    font-size: 14px;
  }

  .bottom {
    left: auto;
    top: auto;
    right: 6px;
    bottom: 5px;
  }

  .pip {
    font-size: 35px;
  }

  .select {
    font-size: 10px;
    padding: 12px 1px;
  }

  .select kbd {
    display: none;
  }

  .below {
    margin-top: 27px;
  }

  .footer {
    font-size: 9px;
    gap: 16px;
    line-height: 1.6;
  }

  .reveal h2 {
    font-size: 31px;
  }
}

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