/* === Layout base === */
:root {
  --bg: #050712;
  --bg-alt: #0b0f1f;
  --panel: #101528;
  --panel-soft: #141a33;
  --accent: #f6b73c;
  --accent-soft: rgba(246, 183, 60, 0.15);
  --accent-strong: #ffd56a;
  --danger: #ff4b6a;
  --text-main: #f5f7ff;
  --text-muted: #9aa0c5;
  --border-soft: rgba(255, 255, 255, 0.06);
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.7);
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: var(--font-main);
  background: radial-gradient(circle at top, #181c3d 0, #02030a 55%, #000 100%);
  color: var(--text-main);
}

/* === Main layout === */

.layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 16px;
}

/* Top bar */

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(
    90deg,
    rgba(10, 14, 35, 0.9),
    rgba(8, 19, 45, 0.9)
  );
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
}

.logo-title {
  margin: 0;
  font-size: 1.3rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.wallet-status {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Main area */

.main-area {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(320px, 1.1fr);
  gap: 16px;
}

/* Canvas section */

.canvas-wrapper {
  position: relative;
  background: radial-gradient(circle at top, #1a2144 0, #050716 55%, #000 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

canvas#game {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  background: radial-gradient(circle at top, #050716 0, #02020a 60%, #000 100%);
}

/* CTA overlay */

.cta-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: radial-gradient(
    circle at center,
    rgba(0, 0, 0, 0.2),
    rgba(0, 0, 0, 0.9)
  );
  color: var(--accent-strong);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.15s ease, opacity 0.2s ease;
  z-index: 3;
}

.cta-overlay:hover {
  background: radial-gradient(
    circle at center,
    rgba(246, 183, 60, 0.08),
    rgba(0, 0, 0, 0.9)
  );
  transform: scale(1.01);
}

/* Side panel */

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Cards */

.vault-card,
.stage-panel,
.actions-panel {
  background: linear-gradient(145deg, var(--panel), var(--panel-soft));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  padding: 14px 14px 12px;
  box-shadow: var(--shadow-soft);
}

.vault-card h2,
.stage-panel h3,
.actions-panel h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Buttons */

.primary-btn,
.secondary-btn,
.vault-tap-btn,
.giga-btn,
.wallet-btn {
  font-family: inherit;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  padding: 8px 12px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}

/* primary / giga / wallet */

.primary-btn,
.giga-btn,
.wallet-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #1a1205;
  box-shadow: 0 12px 30px rgba(246, 183, 60, 0.4);
}

.primary-btn:hover,
.giga-btn:hover,
.wallet-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(246, 183, 60, 0.55);
}

.primary-btn:disabled,
.giga-btn:disabled {
  background: #3b3e54;
  color: var(--text-muted);
  box-shadow: none;
  cursor: default;
}

/* special ready state */

.giga-btn.ready {
  box-shadow: 0 0 18px rgba(246, 183, 60, 0.95);
  border-color: var(--accent-strong);
}

/* Vault tap */

.vault-tap-btn {
  width: 100%;
  margin: 6px 0 10px;
  background: radial-gradient(circle at top, #313a7a, #181c3a);
  color: var(--accent-strong);
  border-color: rgba(246, 183, 60, 0.4);
}

.vault-tap-btn:hover:not(:disabled) {
  background: radial-gradient(circle at top, #3b468c, #181c3a);
}

.vault-tap-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* Secondary buttons */

.secondary-btn {
  width: 100%;
  margin-top: 6px;
  background: transparent;
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.16);
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* Vault stats & hint */

.vault-stats {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 6px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.hint {
  display: block;
  margin-top: 6px;
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* Stage panel lines */

.stage-panel div {
  display: flex;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

/* Back link style */

.back-link {
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 10px;
  font-size: 0.85rem;
  color: var(--text-main);
  background: rgba(0, 0, 0, 0.1);
}

.back-link:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* Responsive */

@media (max-width: 960px) {
  .main-area {
    grid-template-columns: minmax(0, 1fr);
  }

  .side-panel {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .vault-card,
  .stage-panel,
  .actions-panel {
    flex: 1 1 260px;
  }
}