:root {
  --bg: #0a0f17;
  --panel: #111a26;
  --panel-soft: #1a2636;
  --text: #e6edf7;
  --muted: #9fb2c8;
  --accent: #7dd3fc;
  --danger: #fb7185;
  --safe: #34d399;
  --warn: #f59e0b;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Inter", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 360px at 8% 0%, rgba(125, 211, 252, 0.11), transparent 48%),
    radial-gradient(900px 360px at 100% 0%, rgba(196, 181, 253, 0.1), transparent 45%),
    linear-gradient(180deg, #070b11 0%, #0a0f17 40%, #0a1018 100%);
}

.app {
  width: min(1400px, 96%);
  margin: 0 auto;
  padding: 24px 0 48px;
}

.hero,
.panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero {
  padding: 24px;
  margin-bottom: 16px;
  display: grid;
  gap: 12px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 52px);
  letter-spacing: -0.03em;
  line-height: 1.02;
}

.hero p {
  margin: 0;
  color: #d5e0ef;
  max-width: 100ch;
  line-height: 1.6;
}

h2 {
  margin: 0 0 12px;
  font-size: 18px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 12px;
  color: #d9e7f9;
  background: rgba(255, 255, 255, 0.03);
}

.layout {
  display: grid;
  grid-template-columns: minmax(760px, 1fr) 390px;
  gap: 16px;
}

.panel {
  padding: 16px;
}

.controls {
  display: grid;
  gap: 12px;
  margin-bottom: 12px;
}

.control-row,
.control-row-3 {
  display: grid;
  gap: 10px;
}

.control-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.control-row-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: #ced9e9;
}

input,
select,
textarea,
button {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: var(--panel-soft);
  color: var(--text);
  border-radius: 11px;
  padding: 10px 12px;
  font: inherit;
}

textarea {
  min-height: 100px;
  resize: vertical;
}

button {
  cursor: pointer;
  font-weight: 600;
}

button:hover {
  border-color: rgba(125, 211, 252, 0.55);
}

.button-inline {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.button-inline button {
  width: auto;
  flex: 1 0 auto;
}

.status {
  font-size: 13px;
  color: var(--muted);
  min-height: 20px;
}

.board {
  margin-top: 8px;
  display: grid;
  gap: 4px;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 12px;
  overflow: auto;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
}

.cell {
  width: 48px;
  height: 48px;
  border-radius: 11px;
  border: 1px solid #2a3950;
  background: #121b2a;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 120ms ease, border-color 180ms ease, background 180ms ease;
  user-select: none;
  font-size: 11px;
  text-align: center;
  padding: 4px;
}

.cell:hover {
  transform: translateY(-1px);
  border-color: #4b6889;
}

.center {
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.23), rgba(248, 250, 252, 0.09));
  border-color: rgba(255, 255, 255, 0.38);
  color: #f6fbff;
}

.unlocked {
  background: linear-gradient(180deg, rgba(125, 211, 252, 0.14), rgba(125, 211, 252, 0.06));
  border-color: rgba(125, 211, 252, 0.45);
}

.completed {
  background: linear-gradient(180deg, rgba(196, 181, 253, 0.24), rgba(125, 211, 252, 0.12));
  border-color: rgba(196, 181, 253, 0.55);
  color: #f7f3ff;
}

.mine {
  background: linear-gradient(180deg, rgba(251, 113, 133, 0.26), rgba(251, 113, 133, 0.1));
  border-color: rgba(251, 113, 133, 0.65);
  color: #ffe4e6;
}

.disarmed {
  background: linear-gradient(180deg, rgba(52, 211, 153, 0.2), rgba(52, 211, 153, 0.09));
  border-color: rgba(52, 211, 153, 0.65);
  color: #d1fae5;
}

.reflected {
  box-shadow: inset 0 0 0 2px rgba(245, 158, 11, 0.42);
}

.blocked {
  opacity: 0.45;
}

.selected {
  outline: 2px solid rgba(125, 211, 252, 0.9);
  outline-offset: 1px;
}

.aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.detail {
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #0f1725;
  line-height: 1.55;
  min-height: 150px;
  color: #d8e6f7;
}

.stats {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 10px;
}

.stat {
  background: #0f1825;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 10px;
}

.stat .label {
  font-size: 11px;
  color: var(--muted);
}

.stat .value {
  font-size: 24px;
  font-weight: 700;
  margin-top: 2px;
}

.footnote {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .control-row,
  .control-row-3 {
    grid-template-columns: 1fr;
  }

  .button-inline button {
    flex-basis: calc(50% - 8px);
  }
}