:root {
  color-scheme: dark;
  --dm-text: #e8f1ff;
  --dm-muted: #9fb0d0;
  --dm-surface: rgba(9, 16, 34, 0.8);
  --dm-surface-strong: rgba(9, 16, 34, 0.92);
  --dm-border: rgba(140, 170, 255, 0.35);
  --dm-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  --dm-accent: #6ea8ff;
}

* {
  box-sizing: border-box;
}

.dm-shell {
  width: 100%;
  margin: 0 auto 28px;
  padding: 0;
  border-radius: 24px;
  background: radial-gradient(circle at 20% 0%, #1f2f58, #0a1227 65%);
  box-shadow: var(--dm-shadow);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.dm-app {
  position: relative;
  width: 100%;
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  min-height: 680px;
  background: linear-gradient(155deg, #102347, #0a1430);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.dm-canvas-wrap {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

#dmCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.dm-hud {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  transition: opacity 180ms ease;
}

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

.dm-hud-card,
.dm-hud-actions {
  background: var(--dm-surface);
  border: 1px solid var(--dm-border);
  border-radius: 14px;
  padding: 10px 12px;
  backdrop-filter: blur(8px);
}

.dm-hud-card {
  display: grid;
  grid-template-columns: repeat(4, minmax(80px, 1fr));
  gap: 8px 12px;
  color: var(--dm-text);
  font-family: "Inter", "Segoe UI", sans-serif;
}

.dm-chip {
  font-size: 12px;
  line-height: 1.2;
}

.dm-chip b {
  display: block;
  font-size: 13px;
  color: #fff;
  font-weight: 700;
}

.dm-hud-actions {
  display: flex;
  gap: 8px;
}

.dm-btn {
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(96, 165, 250, 0.26), rgba(59, 130, 246, 0.16));
  color: #e9f2ff;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, filter 120ms ease;
}

.dm-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(59, 130, 246, 0.25);
  filter: brightness(1.06);
}

.dm-btn:active {
  transform: translateY(0);
}

.dm-btn-cta {
  background: linear-gradient(180deg, #60a5fa, #2563eb);
  border-color: rgba(147, 197, 253, 0.75);
}

.dm-layer {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 22px;
  background: rgba(6, 12, 28, 0.62);
  backdrop-filter: blur(6px);
}

.dm-layer.dm-show {
  display: flex;
}

#dmStartScreen.dm-layer {
  background: rgba(6, 12, 28, 0.44);
  backdrop-filter: blur(10px) saturate(1.06);
  flex-direction: column;
  gap: 12px;
}

#dmStartScreen .dm-menu-panel {
  width: min(760px, 100%);
}

.dm-card {
  width: min(100%, 620px);
  border-radius: 18px;
  background: var(--dm-surface-strong);
  border: 1px solid var(--dm-border);
  box-shadow: var(--dm-shadow);
  padding: 22px;
  color: var(--dm-text);
  font-family: "Inter", "Segoe UI", sans-serif;
}

.dm-card h1,
.dm-card h2 {
  margin: 0 0 6px;
}

.dm-card h1 {
  margin: 6px 0 8px;
  font-size: clamp(34px, 5vw, 48px);
}

.dm-menu-panel {
  width: min(760px, 100%);
  min-height: 300px;
  border-radius: 18px;
  border: 1px solid rgba(140, 170, 255, 0.35);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.9));
  box-shadow: 0 16px 30px rgba(2, 6, 23, 0.5);
  padding: 22px;
  text-align: center;
  color: var(--dm-text);
}

.dm-menu-panel h1 {
  margin: 6px 0 8px;
  font-size: clamp(34px, 5vw, 48px);
  color: #f8fafc;
  font-weight: 800;
  letter-spacing: 0.01em;
  text-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
}

.dm-menu-panel .dm-subtitle {
  display: block;
  width: 100%;
  margin: 0 auto;
  text-align: center !important;
}

.dm-subtitle,
.dm-note {
  margin: 0 0 12px;
  color: var(--dm-muted);
}

.dm-muted {
  margin: 14px 0 0;
  color: #94a3b8;
  font-size: 14px;
  text-align: center;
  width: 100%;
}

#dmStartMeta {
  display: block;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  text-align: center !important;
}

.dm-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0;
}

.dm-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 14px;
}

.dm-list {
  margin: 10px 0 14px;
  color: #c9d8f7;
  line-height: 1.45;
  padding-left: 18px;
}

.dm-mw {
  display: table;
  text-align: center;
  margin: 0 auto 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: #e7efff;
  background: rgba(34, 211, 238, 0.18);
  border: 1px solid rgba(34, 211, 238, 0.4);
}

.dm-footer {
  margin-top: 8px;
  font-size: 13px;
  color: #94a3b8;
}

.dm-footer-note {
  margin: 10px 0 0;
  font-size: 13px;
  color: #94a3b8;
}

.dm-footer-sub {
  margin: 5px 0 0;
  font-size: 12px;
  color: #93c5fd;
}

.dm-archive-list {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  max-height: 280px;
  overflow: auto;
}

.dm-archive-item {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(20, 33, 64, 0.78);
  color: #e7efff;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
}

.dm-archive-item:hover {
  background: rgba(24, 41, 79, 0.95);
}

.dm-toast {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translate(-50%, 14px);
  opacity: 0;
  pointer-events: none;
  z-index: 30;
  background: rgba(8, 18, 39, 0.95);
  border: 1px solid rgba(167, 139, 250, 0.5);
  color: #efe7ff;
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 13px;
  transition: opacity 180ms ease, transform 180ms ease;
}

.dm-toast.dm-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.dm-standalone {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1d3064, #0a0f22 60%);
  color: #e9f2ff;
}

.dm-standalone .dm-shell {
  width: min(1200px, 100%);
  margin: 24px auto;
}

@media (max-width: 920px) {
  .dm-app {
    min-height: 560px;
  }

  .dm-hud {
    grid-template-columns: 1fr;
  }

  .dm-hud-card {
    grid-template-columns: repeat(3, minmax(70px, 1fr));
  }
}

@media (max-width: 600px) {
  .dm-shell {
    padding: 10px;
    border-radius: 16px;
  }

  .dm-app {
    min-height: 520px;
    border-radius: 14px;
  }

  .dm-hud-card {
    grid-template-columns: repeat(2, minmax(70px, 1fr));
  }

  .dm-btn {
    padding: 9px 11px;
  }
}