:root {
  color-scheme: dark;
  font-family: 'Source Sans 3', system-ui, -apple-system, BlinkMacSystemFont,
    'Segoe UI', sans-serif;
  --bg: #0f111a;
  --panel: #181c29;
  --panel-border: #2a3147;
  --text: #f4f5ff;
  --muted: #a7b1d1;
  --primary: #7a5af8;
  --accent: #22d3ee;
  --danger: #fb7185;
  --success: #34d399;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #1f2640, #0b0d17 65%);
  color: var(--text);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url('data:image/svg+xml,%3Csvg width%3D%27200%27 height%3D%27200%27 viewBox%3D%270 0 200 200%27 fill%3D%27none%27 xmlns%3D%27http://www.w3.org/2000/svg%27%3E%3Crect width%3D%27100%25%27 height%3D%27100%25%27 fill%3D%27none%27/%3E%3Cpath d%3D%27M0 100H200M100 0V200%27 stroke%3D%27%2314182c%27 stroke-width%3D%271%27 stroke-opacity%3D%270.3%27/%3E%3C/svg%3E');
  opacity: 0.6;
  pointer-events: none;
}

.app-shell {
  position: relative;
  z-index: 1;
  padding: 3rem clamp(1rem, 4vw, 4rem) 4rem;
}
 
.app-version {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: 0.8;
  z-index: 40;
  pointer-events: none;
}

.hero-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.hero-controls {
  display: flex;
  gap: 0.75rem;
}

.difficulty-banner {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.drop-banner {
  margin-top: 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.hero-header h1 {
  margin: 0.2rem 0 0.6rem;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.8rem;
  color: var(--accent);
}

.lead {
  color: var(--muted);
  margin: 0;
}

.info-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 180px;
  box-shadow: 0 20px 50px rgba(5, 7, 12, 0.4);
}

.panel.span-2 {
  grid-column: span 2;
}

.panel__header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.panel__header p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.panel__body {
  flex: 1;
}

.panel__body.actions {
  display: grid;
  gap: 0.8rem;
}

.panel__footer {
  min-height: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-line {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  margin-bottom: 0.45rem;
}

.bar {
  flex: 1;
  background: #111525;
  border-radius: 999px;
  height: 0.6rem;
  overflow: hidden;
}

.bar > div {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #a855f7);
  transition: width 0.25s ease;
}

.bar.mana > div {
  background: linear-gradient(90deg, #60a5fa, #c084fc);
}

.bar.exp > div {
  background: linear-gradient(90deg, #34d399, #fcd34d);
}

.stat-table {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.6rem;
  margin-top: 0.6rem;
}

.stat-table div {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 0.6rem;
}

.stat-table span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
}

.stat-table strong {
  font-size: 1.1rem;
}

.resource-strip {
  display: flex;
  gap: 1.2rem;
  margin-top: 0.4rem;
}

.resource-strip .label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  transition: transform 0.15s ease, background 0.2s ease;
}

button.primary {
  background: linear-gradient(120deg, #a855f7, #6366f1);
}

button.ghost-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
}

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

.log {
  max-height: 320px;
  overflow: auto;
  font-size: 0.95rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.log-entry {
  padding: 0.6rem 0.75rem;
  border-left: 3px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
}

.log-entry .time {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(6, 8, 15, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  z-index: 20;
}

.modal.visible {
  display: flex;
}

.modal__content {
  background: #121628;
  border: 1px solid #2a3147;
  border-radius: 20px;
  padding: 2rem;
  width: min(960px, 90vw);
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.hero-card {
  padding: 1.2rem;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.02);
}

.hero-card button {
  width: 100%;
  margin-top: 1rem;
}

.hero-card ul {
  padding-left: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.difficulty-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.difficulty-grid button {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.95rem;
}

.difficulty-grid button.active {
  background: linear-gradient(120deg, #22d3ee, #7a5af8);
}

.side-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 85vw);
  background: #13182b;
  border-left: 1px solid #2a3147;
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 15;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow-y: auto;
}

.side-panel.visible {
  transform: translateX(0);
}

.side-panel section {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1rem;
}

.potion-row,
.relic-card {
  border-radius: 12px;
  padding: 0.8rem;
  background: rgba(0, 0, 0, 0.25);
  margin-bottom: 0.6rem;
}

.potion-row header,
.relic-card header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.badge {
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.badge.common {
  background: rgba(148, 163, 184, 0.2);
  color: #cbd5f5;
}

.badge.rare {
  background: rgba(14, 165, 233, 0.2);
  color: #7dd3fc;
}

.badge.epic {
  background: rgba(217, 70, 239, 0.25);
  color: #f9a8d4;
}

.badge.legendary {
  background: rgba(250, 204, 21, 0.25);
  color: #fde68a;
}

.stat-list {
  list-style: none;
  margin: 0.4rem 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.battle-panel {
  display: grid;
  gap: 1.5rem;
}

.battle-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.8rem;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: #111527;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  z-index: 25;
}

@media (max-width: 900px) {
  .hero-header {
    flex-direction: column;
  }
  .panel.span-2 {
    grid-column: span 1;
  }
}