:root {
  --bg0: #eaf2fb;
  --bg1: #d7e8fb;
  --panel: rgba(255, 255, 255, 0.92);
  --border: rgba(61, 124, 186, 0.28);
  --text: #1a2744;
  --muted: rgba(26, 39, 68, 0.62);
  --accent: #ff6b35;
  --accent2: #2d7cc9;
  --radius: 16px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html,
body {
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(900px 500px at 15% 0%, rgba(45, 124, 201, 0.14), transparent),
    radial-gradient(800px 520px at 90% 10%, rgba(255, 107, 53, 0.08), transparent),
    linear-gradient(165deg, #ffffff 0%, var(--bg0) 50%, var(--bg1) 100%);
}

.shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 10px 14px 22px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Mobile layout */
body.is-mobile .shell {
  max-width: 100%;
  padding: 10px 10px 18px;
}

body.is-mobile .top-nav {
  padding: 10px 10px;
}

body.is-mobile .panel {
  max-width: 94vw;
  padding: 14px 14px 12px;
}

body.is-mobile .title {
  font-size: 1.35rem;
}

body.is-mobile .subtitle {
  font-size: 0.88rem;
}

body.is-mobile .btn {
  padding: 14px 14px;
  font-size: 1.02rem;
}

body.is-mobile .game-frame {
  width: min(94vw, 880px);
  max-width: none;
  margin: 0 auto;
  border-radius: 14px;
}

.top-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 10px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--border);
  box-shadow: 0 10px 26px rgba(45, 90, 140, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background: linear-gradient(135deg, #5ab0ff, #2d7cc9);
  box-shadow: 0 8px 18px rgba(45, 124, 201, 0.22);
}

.brand-text {
  font-weight: 900;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.nav-chip {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 107, 53, 0.12);
  border: 1px solid rgba(255, 107, 53, 0.32);
  color: #b5441a;
}

.main-flow {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px 0 20px;
}

.screen {
  width: 100%;
  display: none;
}

.screen.active {
  display: flex;
  justify-content: center;
}

.panel {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  box-shadow: 0 18px 44px rgba(45, 90, 140, 0.12);
}

.title {
  font-weight: 900;
  font-size: 1.6rem;
  letter-spacing: 0.01em;
}

.title.small {
  font-size: 1.25rem;
}

.subtitle {
  margin-top: 6px;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.92rem;
}

.card {
  margin-top: 14px;
  background: rgba(240, 248, 255, 0.92);
  border: 1px solid rgba(61, 124, 186, 0.16);
  border-radius: 14px;
  padding: 12px 12px 12px;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.right {
  text-align: right;
}

.label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.value {
  font-weight: 800;
  margin-top: 4px;
}

.elo {
  margin-top: 12px;
  text-align: center;
  padding: 10px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(61, 124, 186, 0.14);
}

.elo-num {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--accent2);
  line-height: 1;
}

.elo-label {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 700;
}

.actions {
  margin-top: 10px;
  display: grid;
  gap: 10px;
}

.field {
  display: block;
}

.inline {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(61, 124, 186, 0.22);
  background: rgba(255, 255, 255, 0.9);
  color: var(--text);
  font-weight: 800;
  outline: none;
}

.input:focus {
  border-color: rgba(45, 124, 201, 0.55);
  box-shadow: 0 0 0 3px rgba(45, 124, 201, 0.14);
}

.friends {
  list-style: none;
  margin-top: 12px;
  padding: 10px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(61, 124, 186, 0.16);
  display: grid;
  gap: 8px;
}

.friends li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.friend-meta {
  color: var(--muted);
  font-weight: 800;
  font-size: 0.86rem;
}

body.is-mobile .inline {
  grid-template-columns: 1fr;
}

.btn {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 900;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 0.1s ease, filter 0.15s ease, box-shadow 0.15s ease;
}

.btn-accent {
  background: linear-gradient(180deg, #ff9a5a, var(--accent));
  color: #1a0f08;
  box-shadow: 0 6px 0 #b84d1a;
}

.btn-accent:hover {
  filter: brightness(1.04);
  transform: translateY(-1px);
}

.btn-accent:active {
  transform: translateY(2px);
  box-shadow: 0 3px 0 #b84d1a;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(61, 124, 186, 0.22);
  color: var(--text);
}

.btn-ghost:hover {
  filter: brightness(0.99);
  transform: translateY(-1px);
}

.howto {
  margin-top: 10px;
  font-size: 0.88rem;
  line-height: 1.4;
  color: rgba(26, 39, 68, 0.8);
}

.hidden {
  display: none;
}

.search-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: 10px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.9rem;
}

.spinner {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid rgba(61, 124, 186, 0.18);
  border-top-color: var(--accent2);
  animation: spin 0.8s linear infinite;
  margin: 12px auto 10px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.status {
  text-align: center;
  font-weight: 900;
  color: var(--accent2);
}

.log {
  list-style: none;
  margin-top: 10px;
  padding: 8px 10px;
  max-height: 140px;
  overflow: auto;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(61, 124, 186, 0.16);
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.85rem;
}

.log li {
  padding: 6px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.ach-list {
  list-style: none;
  margin-top: 8px;
  padding: 10px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(61, 124, 186, 0.16);
  color: var(--text);
  font-weight: 700;
  font-size: 0.92rem;
}

.ach-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 6px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.ach-list li:last-child {
  border-bottom: none;
}

.ach-badge {
  font-size: 0.8rem;
  font-weight: 900;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(45, 124, 201, 0.22);
  background: rgba(45, 124, 201, 0.08);
  color: #2d7cc9;
  white-space: nowrap;
}

.found {
  margin-top: 10px;
  text-align: center;
  font-weight: 900;
  color: #1a8a52;
  min-height: 1.2em;
}

.game-frame {
  width: min(96vw, 880px);
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(61, 124, 186, 0.28);
  box-shadow: 0 16px 44px rgba(45, 90, 140, 0.16);
  background: rgba(255, 255, 255, 0.96);
  position: relative;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  cursor: none;
  touch-action: none;
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  font-weight: 900;
  font-size: 1.3rem;
}

.overlay.visible {
  display: flex;
}