:root {
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color-scheme: dark;
  --bg: #06070b;
  --surface: rgba(18, 21, 32, 0.85);
  --surface-strong: rgba(30, 36, 52, 0.92);
  --accent: #7da6ff;
  --accent-strong: #9cc4ff;
  --text: #f4f6ff;
  --muted: #97a1c1;
  --grid-size: 10;
  --tile-size: 36px;
  background: radial-gradient(circle at 20% 20%, rgba(47, 61, 96, 0.45), transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(37, 45, 71, 0.55), transparent 60%),
    var(--bg);
  color: var(--text);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1rem, 2.5vw, 2rem);
}

.app-header,
.app-footer {
  text-align: center;
  padding-inline: clamp(0.5rem, 3vw, 2rem);
}

.app-header h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: 0.04em;
}

.subtitle {
  margin: 0.5rem auto 0;
  max-width: 52ch;
  color: var(--muted);
  font-size: clamp(1rem, 3.2vw, 1.2rem);
}

.app-footer {
  font-size: 0.9rem;
  color: var(--muted);
}

.layout {
  display: grid;
  gap: clamp(1rem, 2vw, 1.75rem);
  width: min(1080px, 100%);
  margin: 0 auto;
}

@media (min-width: 960px) {
  .layout {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .layout .expedition {
    grid-column: 1 / -1;
  }
}

.panel {
  background: var(--surface);
  border-radius: 20px;
  padding: clamp(1rem, 3vw, 1.75rem);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 40px rgba(5, 7, 15, 0.45);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel h2 {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

.panel-intro {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.budget {
  margin: 0.25rem 0 0.5rem;
  font-weight: 600;
  color: var(--accent-strong);
}

.form-field label {
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.form-field input[type="range"],
.form-field select {
  width: 100%;
  accent-color: var(--accent);
}

.form-field select {
  background: rgba(15, 18, 28, 0.8);
  color: var(--text);
  border: 1px solid rgba(125, 166, 255, 0.35);
  border-radius: 12px;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
}

.form-field input[type="range"] {
  height: 2.25rem;
}

.hint {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

button {
  font: inherit;
  border: none;
  border-radius: 14px;
  padding: 0.7rem 1.2rem;
  cursor: pointer;
  background: rgba(125, 166, 255, 0.15);
  color: var(--accent-strong);
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

button:active {
  transform: translateY(1px) scale(0.99);
}

button:focus-visible {
  outline: 3px solid rgba(125, 166, 255, 0.65);
  outline-offset: 2px;
}

button.primary {
  background: linear-gradient(135deg, var(--accent), #5479ff);
  color: #05070c;
  font-weight: 700;
  box-shadow: 0 12px 22px rgba(77, 129, 255, 0.35);
}

button.primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}

button.ghost {
  align-self: flex-start;
  background: transparent;
  border: 1px solid rgba(125, 166, 255, 0.4);
  color: var(--accent-strong);
  padding-block: 0.5rem;
}

button.ghost:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.expedition-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.mission-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
}

.stat {
  background: rgba(13, 16, 24, 0.75);
  border-radius: 16px;
  padding: 0.75rem 1rem;
  display: grid;
  gap: 0.35rem;
}

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

.stat .value {
  font-size: 1.35rem;
  font-weight: 700;
}

.map-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 860px) {
  .map-wrapper {
    flex-direction: row;
    align-items: flex-start;
  }
}

.map-scroll {
  background: rgba(9, 11, 18, 0.85);
  border-radius: 18px;
  padding: 0.75rem;
  border: 1px solid rgba(125, 166, 255, 0.25);
  overflow: auto;
  max-height: min(70vh, 620px);
  max-width: min(100%, 520px);
}

.map {
  display: grid;
  grid-template-columns: repeat(var(--grid-size), var(--tile-size));
  grid-auto-rows: var(--tile-size);
  gap: 2px;
  width: max-content;
}

.tile {
  border-radius: 8px;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.55rem, 1.5vw, 0.7rem);
  text-align: center;
  padding: 0.15rem;
  min-width: var(--tile-size);
  min-height: var(--tile-size);
  color: rgba(4, 6, 11, 0.9);
  transition: transform 120ms ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tile[data-state="hidden"] {
  background: rgba(18, 21, 32, 0.65);
  color: transparent;
}

.tile[data-state="revealed"] {
  border-color: rgba(255, 255, 255, 0.05);
}

.tile[data-state="current"] {
  transform: scale(1.08);
  box-shadow: 0 8px 20px rgba(84, 121, 255, 0.4);
  border-color: rgba(125, 166, 255, 0.6);
}

.tile[data-inspected="true"] {
  outline: 2px solid rgba(255, 255, 255, 0.55);
  outline-offset: -2px;
}

.tile[data-resource="none"]::after {
  content: "";
}

.tile[data-resource="iron"]::after,
.tile[data-resource="crystal"]::after,
.tile[data-resource="bio"]::after {
  content: "•";
  font-size: 1.2em;
  margin-left: 0.25rem;
  color: rgba(5, 7, 12, 0.7);
}

.tile[data-resource="iron"] {
  background: linear-gradient(135deg, #9aa5b9, #d3dae6);
}

.tile[data-resource="crystal"] {
  background: linear-gradient(135deg, #a371ff, #d0b8ff);
}

.tile[data-resource="bio"] {
  background: linear-gradient(135deg, #76c98c, #c2ffd7);
}

.tile[data-biome="plain"][data-resource="none"] {
  background: linear-gradient(135deg, #6e8fff, #b0c8ff);
}

.tile[data-biome="mountain"][data-resource="none"] {
  background: linear-gradient(135deg, #5c647f, #8a96b6);
}

.tile[data-biome="jungle"][data-resource="none"] {
  background: linear-gradient(135deg, #4d7a59, #7eb789);
}

.tile[data-biome="desert"][data-resource="none"] {
  background: linear-gradient(135deg, #d6b267, #f2e3b0);
}

.tile[data-biome="tundra"][data-resource="none"] {
  background: linear-gradient(135deg, #7f9bb7, #c3d9ef);
}

.tile[data-biome="swamp"][data-resource="none"] {
  background: linear-gradient(135deg, #556f58, #8da78c);
}

.tile[data-biome="lava"][data-resource="none"] {
  background: linear-gradient(135deg, #aa302f, #f5654b);
}

.tile[data-biome="ocean"][data-resource="none"] {
  background: linear-gradient(135deg, #37598d, #5f8ddf);
}

.tile[data-biome="river"][data-resource="none"] {
  background: linear-gradient(135deg, #4a7fb3, #8fceff);
}

.legend {
  margin: 0;
  padding-left: 1rem;
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.legend li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.legend li::before {
  content: "";
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 4px;
  background: currentColor;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.legend-code {
  font-weight: 700;
  color: var(--text);
}

.map-sidebar {
  display: grid;
  gap: 1rem;
  align-content: start;
  width: min(320px, 100%);
}

.legend-panel,
.inspector,
.control-stack,
.testing {
  background: rgba(13, 16, 24, 0.75);
  border-radius: 16px;
  padding: 0.85rem 1rem;
  display: grid;
  gap: 0.6rem;
}

.tile-details {
  display: grid;
  gap: 0.4rem;
  margin: 0;
}

.tile-details div {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.tile-details dt {
  color: var(--muted);
  font-weight: 500;
}

.tile-details dd {
  margin: 0;
  font-weight: 600;
  color: var(--accent-strong);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.control-stack .controls {
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0.75rem;
}

.control-stack .dpad {
  align-self: center;
}

.dpad {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(3, auto);
  justify-items: center;
  gap: 0.35rem;
}

.dpad button {
  width: 4rem;
  height: 4rem;
  border-radius: 16px;
  font-size: 1.5rem;
  background: rgba(125, 166, 255, 0.2);
}

.dpad .middle-row {
  display: grid;
  grid-template-columns: repeat(3, 4rem);
  gap: 0.35rem;
}

.status-message {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.testing-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.testing-buttons button {
  flex: 1 1 120px;
  background: rgba(125, 166, 255, 0.18);
}

@media (max-width: 540px) {
  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .dpad {
    align-self: center;
  }

  .dpad button {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.35rem;
  }
}