:root{
  --charcoal: #14120f;
  --charcoal-2: #1c1914;
  --steel: #2a2620;
  --brass: #c9a24b;
  --brass-bright: #e8c876;
  --paper: #ece4d3;
  --paper-dim: #a89d87;
  --warm-red: #b5453a;
  --cool-blue: #5c8a92;
  --win-green: #7ea56b;

  --display: 'Oswald', sans-serif;
  --mono: 'Space Mono', monospace;
}

*{ box-sizing: border-box; }

html, body{
  margin:0;
  padding:0;
  background: var(--charcoal);
  color: var(--paper);
  font-family: var(--mono);
  min-height:100vh;
}

body{
  background-image:
    radial-gradient(circle at 20% 10%, rgba(201,162,75,0.06), transparent 40%),
    radial-gradient(circle at 80% 90%, rgba(92,138,146,0.05), transparent 45%);
}

.grain{
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.05;
  z-index: 1;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.stage{
  position: relative;
  z-index: 2;
  max-width: 920px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

/* Header */
.masthead{
  text-align: center;
  margin-bottom: 40px;
}

.eyebrow{
  font-family: var(--mono);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--brass);
  margin: 0 0 10px;
}

.masthead h1{
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(42px, 8vw, 72px);
  letter-spacing: 0.06em;
  margin: 0;
  color: var(--paper);
  text-shadow: 0 0 30px rgba(201,162,75,0.15);
}

.sub{
  max-width: 480px;
  margin: 14px auto 0;
  color: var(--paper-dim);
  font-size: 14px;
  line-height: 1.6;
}
.sub span{ color: var(--brass-bright); font-weight: 700; }

/* Vault room layout */
.vault-room{
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 36px;
  align-items: start;
}

@media (max-width: 720px){
  .vault-room{ grid-template-columns: 1fr; }
}

/* Dial */
.dial-column{
  display:flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.dial-wrap{
  background: radial-gradient(circle at 50% 40%, var(--steel), var(--charcoal-2));
  border: 1px solid rgba(201,162,75,0.25);
  border-radius: 18px;
  padding: 24px;
  width: 100%;
  max-width: 320px;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.5), 0 20px 40px rgba(0,0,0,0.4);
}

.dial{ width: 100%; height: auto; display:block; }

.dial-outer{
  fill: none;
  stroke: var(--brass);
  stroke-width: 2;
  opacity: 0.5;
}

.dial-face{
  fill: #0f0d0b;
  stroke: rgba(201,162,75,0.3);
  stroke-width: 1;
}

.dial-ticks line{
  stroke: var(--paper-dim);
  stroke-width: 1.5;
}
.dial-ticks line.major{
  stroke: var(--brass);
  stroke-width: 2.5;
}

.needle{
  stroke: var(--warm-red);
  stroke-width: 3;
  stroke-linecap: round;
  transform-origin: 160px 160px;
  transform: rotate(0deg);
  transition: transform 0.7s cubic-bezier(.22,1,.36,1), stroke 0.4s ease;
}

.hub{
  fill: var(--brass);
  stroke: var(--charcoal);
  stroke-width: 3;
}

.dial-readout{
  font-family: var(--display);
  font-size: 28px;
  fill: var(--paper);
  letter-spacing: 0.05em;
}

.dial-caption{
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-dim);
  margin: 4px 0 0;
  min-height: 16px;
}

/* Tumblers = attempt pips */
.tumblers{
  display:flex;
  gap: 10px;
}

.tumbler{
  width: 30px;
  height: 12px;
  border-radius: 3px;
  background: var(--steel);
  border: 1px solid rgba(201,162,75,0.3);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.tumbler.used{
  background: var(--brass);
  box-shadow: 0 0 10px rgba(201,162,75,0.6);
}
.tumbler.used.miss{
  background: var(--warm-red);
  box-shadow: 0 0 10px rgba(181,69,58,0.6);
}
.tumbler.used.hit{
  background: var(--win-green);
  box-shadow: 0 0 10px rgba(126,165,107,0.6);
}

/* Console / form */
.console{
  background: var(--charcoal-2);
  border: 1px solid rgba(201,162,75,0.18);
  border-radius: 18px;
  padding: 28px;
}

.guess-form label{
  display:block;
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 13px;
  color: var(--brass);
  margin-bottom: 10px;
}

.input-row{
  display:flex;
  gap: 10px;
}

#guess-input{
  flex: 1;
  background: var(--charcoal);
  border: 1px solid rgba(236,228,211,0.2);
  border-radius: 8px;
  color: var(--paper);
  font-family: var(--mono);
  font-size: 20px;
  padding: 12px 14px;
  min-width: 0;
}
#guess-input:focus{
  outline: none;
  border-color: var(--brass);
  box-shadow: 0 0 0 3px rgba(201,162,75,0.2);
}
#guess-input::-webkit-outer-spin-button,
#guess-input::-webkit-inner-spin-button{
  -webkit-appearance: none;
  margin: 0;
}

#turn-btn{
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 14px;
  font-weight: 600;
  color: var(--charcoal);
  background: var(--brass);
  border: none;
  border-radius: 8px;
  padding: 0 22px;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}
#turn-btn:hover{ background: var(--brass-bright); }
#turn-btn:active{ transform: scale(0.97); }
#turn-btn:disabled{
  background: var(--steel);
  color: var(--paper-dim);
  cursor: not-allowed;
}

/* Feedback */
.feedback{
  margin: 20px 0 0;
  min-height: 44px;
  font-size: 15px;
  line-height: 1.6;
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(201,162,75,0.06);
  border-left: 3px solid var(--brass);
  color: var(--paper);
  transition: border-color 0.3s ease, background 0.3s ease;
}
.feedback.higher{ border-color: var(--cool-blue); }
.feedback.lower{ border-color: var(--warm-red); }
.feedback.correct{ border-color: var(--win-green); background: rgba(126,165,107,0.1); }
.feedback.error{ border-color: var(--warm-red); background: rgba(181,69,58,0.1); }
.feedback.over{ border-color: var(--warm-red); background: rgba(181,69,58,0.12); }

/* Log */
.log{
  margin-top: 24px;
  border-top: 1px solid rgba(236,228,211,0.12);
  padding-top: 14px;
}

.log-head{
  display:grid;
  grid-template-columns: 60px 1fr 1fr;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--paper-dim);
  margin-bottom: 8px;
}

#log-list{
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 180px;
  overflow-y: auto;
}

#log-list li{
  display:grid;
  grid-template-columns: 60px 1fr 1fr;
  font-size: 14px;
  padding: 7px 0;
  border-bottom: 1px dashed rgba(236,228,211,0.08);
}

#log-list li .reading.higher{ color: var(--cool-blue); }
#log-list li .reading.lower{ color: var(--warm-red); }
#log-list li .reading.correct{ color: var(--win-green); font-weight: 700; }

.reset-btn{
  margin-top: 20px;
  width: 100%;
  font-family: var(--display);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 14px;
  font-weight: 600;
  color: var(--brass-bright);
  background: transparent;
  border: 1px solid var(--brass);
  border-radius: 8px;
  padding: 12px;
  cursor: pointer;
  transition: background 0.2s ease;
}
.reset-btn:hover{ background: rgba(201,162,75,0.12); }
.hidden{ display: none; }

.footer{
  text-align: center;
  margin-top: 40px;
  color: var(--paper-dim);
  font-size: 12px;
  letter-spacing: 0.04em;
}

@media (prefers-reduced-motion: reduce){
  .needle{ transition: none; }
}