:root {
  --bg-deep: #140a08;
  --bg-mid: #2a120c;
  --lava: #ff4d1a;
  --lava-hot: #ffcc33;
  --brick: #6b3a28;
  --brick-lite: #8f5340;
  --ink: #fff3e6;
  --muted: #c9a48a;
  --panel: rgba(18, 8, 6, 0.88);
  --accent: #ffd24a;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: "Noto Sans SC", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(ellipse 90% 60% at 50% 110%, rgba(255, 70, 20, 0.35), transparent 55%),
    radial-gradient(ellipse 70% 50% at 80% 0%, rgba(255, 140, 40, 0.12), transparent 50%),
    linear-gradient(180deg, #1c0d0a 0%, var(--bg-deep) 100%);
  display: grid;
  place-items: center;
  padding: 24px 16px 40px;
}

.shell {
  width: min(980px, 100%);
  display: grid;
  gap: 16px;
}

.top h1 {
  font-family: "Press Start 2P", monospace;
  font-size: clamp(18px, 3vw, 26px);
  letter-spacing: 1px;
  color: var(--accent);
  text-shadow: 0 0 18px rgba(255, 180, 40, 0.45);
  animation: title-pulse 2.4s ease-in-out infinite;
}

.tag {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

.stage-wrap {
  position: relative;
  border: 3px solid #4a2418;
  box-shadow:
    0 0 0 1px #2a120c,
    0 20px 50px rgba(0, 0, 0, 0.55),
    inset 0 0 40px rgba(255, 60, 0, 0.08);
  background: #000;
  overflow: hidden;
}

.puzzle-tools {
  position: absolute;
  top: 44px;
  left: 12px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.puzzle-tools.hidden {
  display: none;
}

.fake-btn {
  pointer-events: auto;
  touch-action: none;
  user-select: none;
  cursor: grab;
  border: 2px solid #8a5a28;
  background: linear-gradient(180deg, #3a2418 0%, #24140e 100%);
  color: #ffd24a;
  font-family: "Press Start 2P", monospace;
  font-size: 10px;
  padding: 10px 12px;
  min-width: 84px;
  text-align: center;
  box-shadow: 0 3px 0 #1a0c08, 0 0 0 1px rgba(255, 180, 80, 0.15);
  transition: transform 0.08s ease, filter 0.12s ease;
}

.fake-btn:hover {
  filter: brightness(1.08);
}

.fake-btn:active,
.fake-btn.dragging {
  cursor: grabbing;
  transform: scale(1.04);
  z-index: 20;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.45);
}

.fake-btn.used {
  visibility: hidden;
  pointer-events: none;
}

.fake-btn.locked {
  filter: saturate(0.7);
  animation: btn-deny 0.35s ease;
}

.home-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 6;
  cursor: pointer;
  user-select: none;
  border: 2px solid #8a5a28;
  background: linear-gradient(180deg, #3a2418 0%, #24140e 100%);
  color: #ffd24a;
  font-family: "Press Start 2P", monospace;
  font-size: 10px;
  padding: 10px 14px;
  box-shadow: 0 3px 0 #1a0c08;
  transition: transform 0.08s ease, filter 0.12s ease;
}

.home-btn.hidden {
  display: none;
}

.home-btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.home-btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #1a0c08;
}

.level-select {
  position: absolute;
  inset: 0;
  z-index: 18;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 10%, rgba(255, 120, 40, 0.16), transparent 55%),
    rgba(8, 3, 2, 0.92);
  backdrop-filter: blur(3px);
  overflow: auto;
  padding: 16px;
}

.level-select.hidden {
  display: none;
}

.level-select-card {
  width: min(720px, 100%);
  padding: 22px 18px 18px;
  background: rgba(18, 8, 6, 0.95);
  border: 2px solid #7a3d24;
  animation: panel-in 0.35s cubic-bezier(0.2, 0.9, 0.2, 1);
}

.level-select-card h2 {
  font-family: "Noto Sans SC", sans-serif;
  font-size: 22px;
  color: var(--accent);
  text-align: center;
  margin-bottom: 6px;
}

.level-select-desc {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 14px;
}

.level-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}

.level-cell {
  appearance: none;
  border: 1px solid #7a3d24;
  background: rgba(0, 0, 0, 0.4);
  color: #ffd24a;
  font-family: "Noto Sans SC", sans-serif;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 4px;
  cursor: pointer;
  position: relative;
}

.level-cell:hover {
  filter: brightness(1.12);
}

.level-cell.playable {
  background: linear-gradient(180deg, #3a2418, #24140e);
  border-color: #c47a30;
}

.level-cell.endpoint {
  background: linear-gradient(180deg, #ffe07a, #ff9a2a);
  color: #2a1208;
  border-color: #8a4a18;
}

.level-cell.locked {
  color: #8a7060;
  border-color: #4a3020;
}

.level-cell .badge {
  display: block;
  font-size: 10px;
  font-weight: 500;
  margin-top: 2px;
  opacity: 0.85;
}

.level-tip {
  margin-top: 12px;
  text-align: center;
  color: #ffd24a;
  font-size: 13px;
  min-height: 20px;
}

.level-tip.hidden {
  display: none;
}

#logout-btn {
  appearance: none;
  display: block;
  width: 100%;
  margin-top: 14px;
  border: 1px solid #7a3d24;
  background: rgba(0, 0, 0, 0.35);
  color: var(--muted);
  font-family: "Noto Sans SC", sans-serif;
  font-size: 13px;
  padding: 10px;
  cursor: pointer;
}

#logout-btn:hover {
  color: #ffd24a;
}

.login-screen {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 20%, rgba(255, 120, 40, 0.18), transparent 55%),
    rgba(8, 3, 2, 0.92);
  backdrop-filter: blur(3px);
}

.login-screen.hidden {
  display: none;
}

.login-card {
  width: min(360px, 90%);
  padding: 28px 24px;
  background: rgba(18, 8, 6, 0.95);
  border: 2px solid #7a3d24;
  display: grid;
  gap: 10px;
  animation: panel-in 0.4s cubic-bezier(0.2, 0.9, 0.2, 1);
}

.login-card h2 {
  font-family: "Noto Sans SC", sans-serif;
  font-size: 22px;
  color: var(--accent);
  text-align: center;
  margin-bottom: 4px;
}

.login-desc {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.login-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 8px;
}

.login-tab {
  appearance: none;
  border: 1px solid #7a3d24;
  background: rgba(0, 0, 0, 0.35);
  color: var(--muted);
  font-family: "Noto Sans SC", sans-serif;
  font-size: 12px;
  padding: 8px 4px;
  cursor: pointer;
}

.login-tab.active {
  color: #2a1208;
  background: linear-gradient(180deg, #ffe07a, #ff9a2a);
  border-color: #8a4a18;
  font-weight: 700;
}

.login-pane {
  display: grid;
  gap: 10px;
}

.login-pane.hidden {
  display: none;
}

.sms-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

#sms-btn {
  appearance: none;
  border: 1px solid #8a5a28;
  background: #3a2418;
  color: #ffd24a;
  font-family: "Noto Sans SC", sans-serif;
  font-size: 12px;
  padding: 0 10px;
  cursor: pointer;
  white-space: nowrap;
}

#sms-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.minor-notice {
  margin-top: 4px;
  padding: 14px 12px;
  border: 2px solid #ff7a5c;
  background: rgba(80, 20, 10, 0.55);
  display: grid;
  gap: 12px;
}

.minor-notice.hidden {
  display: none;
}

.minor-notice p {
  color: #ffd24a;
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

#minor-ok {
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: "Noto Sans SC", sans-serif;
  font-size: 14px;
  font-weight: 700;
  padding: 10px;
  color: #2a1208;
  background: linear-gradient(180deg, #ffe07a, #ff9a2a);
}

.login-card label {
  font-size: 13px;
  color: var(--muted);
}

.login-card input {
  appearance: none;
  border: 2px solid #7a3d24;
  background: rgba(0, 0, 0, 0.45);
  color: var(--ink);
  font-family: "Noto Sans SC", sans-serif;
  font-size: 15px;
  padding: 10px 12px;
  outline: none;
  width: 100%;
}

.login-card input:focus {
  border-color: #ffd24a;
}

.login-error {
  color: #ff7a5c;
  font-size: 12px;
  min-height: 16px;
}

.login-error.hidden {
  display: none;
}

#login-submit {
  appearance: none;
  border: none;
  cursor: pointer;
  margin-top: 8px;
  font-family: "Press Start 2P", monospace;
  font-size: 11px;
  padding: 14px 18px;
  color: #2a1208;
  background: linear-gradient(180deg, #ffe07a, #ff9a2a);
  box-shadow: 0 0 0 2px #8a4a18, 0 6px 0 #8a3a10;
}

#login-submit:hover {
  filter: brightness(1.05);
}

#login-submit:active {
  transform: translateY(3px);
  box-shadow: 0 0 0 2px #8a4a18, 0 2px 0 #8a3a10;
}

@keyframes btn-deny {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-4px);
  }
  75% {
    transform: translateX(4px);
  }
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  background: #1a0c09;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(10, 4, 2, 0.72);
  backdrop-filter: blur(2px);
  transition: opacity 0.25s ease;
}

.overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.panel {
  width: min(420px, 90%);
  padding: 28px 24px;
  background: var(--panel);
  border: 2px solid #7a3d24;
  text-align: center;
  animation: panel-in 0.45s cubic-bezier(0.2, 0.9, 0.2, 1);
}

.panel h2 {
  font-family: "Noto Sans SC", sans-serif;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--accent);
  margin-bottom: 14px;
}

.hint.hidden {
  display: none !important;
}

.panel p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}

#start-btn {
  appearance: none;
  border: none;
  cursor: pointer;
  font-family: "Press Start 2P", monospace;
  font-size: 12px;
  padding: 14px 22px;
  color: #2a1208;
  background: linear-gradient(180deg, #ffe07a, #ff9a2a);
  box-shadow: 0 0 0 2px #8a4a18, 0 8px 0 #8a3a10;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

#start-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 2px #8a4a18, 0 10px 0 #8a3a10;
}

#start-btn:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 2px #8a4a18, 0 2px 0 #8a3a10;
}

.hint {
  margin-top: 16px !important;
  margin-bottom: 0 !important;
  font-size: 12px !important;
  opacity: 0.85;
}

.name-form {
  display: grid;
  gap: 10px;
  margin: 0 auto 18px;
  width: min(280px, 100%);
  text-align: left;
}

.name-form.hidden {
  display: none;
}

.name-form label {
  font-size: 13px;
  color: var(--muted);
}

.name-form input {
  appearance: none;
  border: 2px solid #7a3d24;
  background: rgba(0, 0, 0, 0.45);
  color: var(--accent);
  font-family: "Noto Sans SC", sans-serif;
  font-size: 16px;
  font-weight: 700;
  padding: 10px 12px;
  outline: none;
  width: 100%;
}

.name-form input:focus {
  border-color: #ffd24a;
  box-shadow: 0 0 0 2px rgba(255, 210, 74, 0.2);
}

.hud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  font-size: 14px;
  color: var(--muted);
}

.hud strong {
  color: var(--accent);
  font-weight: 700;
}

@keyframes title-pulse {
  0%,
  100% {
    text-shadow: 0 0 12px rgba(255, 180, 40, 0.35);
  }
  50% {
    text-shadow: 0 0 28px rgba(255, 120, 30, 0.7);
  }
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 640px) {
  body {
    padding: 16px 10px 28px;
  }

  .panel {
    padding: 22px 16px;
  }

  .panel h2 {
    font-size: 18px;
  }

  #start-btn {
    font-size: 10px;
    padding: 12px 16px;
  }

  .level-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}