:root {
  color-scheme: light dark;
  --background-color: #f9fafb;
  --foreground-color: #1f2933;
  --muted-color: #6b7280;
  --accent-color: #7c3aed;
  --accent-color-hover: #6d28d9;
  --card-background: #ffffff;
  --card-border: rgba(148, 163, 184, 0.3);
}

:root[data-theme="dark"] {
  --background-color: #0f172a;
  --foreground-color: #f8fafc;
  --muted-color: #cbd5f5;
  --accent-color: #8b5cf6;
  --accent-color-hover: #7c3aed;
  --card-background: #1e293b;
  --card-border: rgba(148, 163, 184, 0.2);
}

body {
  background-color: var(--background-color);
  color: var(--foreground-color);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
}

a {
  color: inherit;
}

.card {
  background: var(--card-background);
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}

.category-chip {
  align-items: center;
  background: var(--chip-bg-light, rgba(99, 102, 241, 0.12));
  border: 1px solid var(--chip-border-light, rgba(99, 102, 241, 0.2));
  border-radius: 999px;
  color: var(--chip-text-light, #312e81);
  display: inline-flex;
  font-size: 0.75rem;
  font-weight: 600;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}

.category-chip:hover {
  background: var(--chip-hover-light, rgba(99, 102, 241, 0.18));
  border-color: var(--chip-hover-light, rgba(99, 102, 241, 0.35));
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.18);
  transform: translateY(-2px);
}

:root[data-theme="dark"] .category-chip {
  background: var(--chip-bg-dark, rgba(99, 102, 241, 0.25));
  border-color: var(--chip-border-dark, rgba(129, 140, 248, 0.4));
  color: var(--chip-text-dark, #ede9fe);
}

:root[data-theme="dark"] .category-chip:hover {
  background: var(--chip-hover-dark, rgba(79, 70, 229, 0.35));
  border-color: var(--chip-hover-dark, rgba(129, 140, 248, 0.55));
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.45);
}

.theme-toggle {
  align-items: center;
  background: transparent;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  color: var(--foreground-color);
  display: inline-flex;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem;
}

.theme-toggle svg {
  height: 1rem;
  width: 1rem;
}

.navbar {
  background: var(--card-background);
  border-bottom: 1px solid var(--card-border);
}

.navbar [data-menu] {
  left: auto;
  right: 0;
  top: 100%;
}

.section-title {
  font-size: clamp(1.5rem, 2vw + 1rem, 2.5rem);
  font-weight: 700;
  margin-bottom: 2rem;
  text-align: center;
}

.game-modal {
  inset: 0;
  align-items: center;
  display: flex;
  justify-content: center;
  padding: clamp(1rem, 2vw + 1rem, 2.5rem);
  position: fixed;
  z-index: 90;
}

.game-modal.hidden {
  display: none;
}

.game-modal__backdrop {
  background: rgba(15, 23, 42, 0.45);
  inset: 0;
  position: absolute;
  backdrop-filter: blur(12px);
}

.game-modal__dialog {
  background: var(--card-background);
  border: 1px solid var(--card-border);
  border-radius: 1.25rem;
  box-shadow: 0 30px 60px rgba(15, 23, 42, 0.28);
  display: flex;
  flex-direction: column;
  height: min(90vh, 720px);
  overflow: hidden;
  position: relative;
  width: min(1100px, 100%);
}

.game-modal__header {
  align-items: center;
  background: var(--card-background);
  border-bottom: 1px solid var(--card-border);
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  z-index: 1;
}

.game-modal__title {
  font-size: clamp(1.1rem, 1vw + 1rem, 1.5rem);
  font-weight: 600;
  margin: 0;
}

.game-modal__close {
  align-items: center;
  background: rgba(124, 58, 237, 0.08);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  color: var(--accent-color);
  display: inline-flex;
  font-size: 1.25rem;
  font-weight: 600;
  height: 2.5rem;
  justify-content: center;
  line-height: 1;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  width: 2.5rem;
}

.game-modal__close:hover,
.game-modal__close:focus-visible {
  background: rgba(124, 58, 237, 0.16);
  border-color: var(--accent-color);
  outline: none;
  transform: translateY(-1px);
}

.game-modal__frame {
  background: #000;
  border: 0;
  flex: 1;
  width: 100%;
}

body.game-modal-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .game-modal {
    padding: 1rem;
  }

  .game-modal__dialog {
    border-radius: 1rem;
  }

  .game-modal__close {
    height: 2.25rem;
    width: 2.25rem;
  }
}