/**
 * Convergent Abstract Strategy Games - Part I
 * Full standalone stylesheet. Just replace your existing styles.css.
 */

 *, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

/* Background atmosphere */
.page-wrapper::before {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 0% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.page-wrapper::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
}

[data-theme="light"] .page-wrapper::before {
  background: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(245, 158, 11, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 50% at 0% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 50%);
}

[data-theme="light"] .page-wrapper::after {
  background-image: 
    linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

/* Page title */
.page-header {
  text-align: center;
  margin-bottom: var(--spacing-6);
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--font-size-28);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

@media (max-width: 768px) {
  .page-title {
    font-size: var(--font-size-24);
  }
}

/* Concept card */
.concept-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-concept);
  padding: var(--radius-theme-gap);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.concept-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, 
    var(--color-theme-information),
    var(--color-theme-termination),
    var(--color-theme-progression),
    var(--color-theme-convergence)
  );
  border-radius: var(--radius-concept) var(--radius-concept) 0 0;
}

.concept-definition {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  margin: var(--spacing-2) var(--spacing-4);
  border-left: 3px solid var(--color-primary);
}

.concept-definition p {
  font-size: var(--font-size-16);
  color: var(--color-text-2);
  line-height: var(--line-height-relaxed);
  font-style: italic;
}

.concept-definition strong {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  font-style: normal;
}

/* Themes grid */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: var(--radius-theme-gap);
  padding: var(--spacing-4);
}

@media (max-width: 960px) {
  .themes-grid {
    grid-template-columns: 1fr;
  }
}

/* Theme cards */
.theme-card {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-theme-inner);
  padding: var(--radius-axiom-gap);
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-slow) var(--ease-out), box-shadow var(--duration-slow) var(--ease-out);
}

.theme-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.theme-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: var(--radius-theme-inner) var(--radius-theme-inner) 0 0;
}

.theme-card--information::before { background: var(--color-theme-information); }
.theme-card--termination::before { background: var(--color-theme-termination); }
.theme-card--progress::before { background: var(--color-theme-balance); }
.theme-card--convergence::before { background: var(--color-theme-convergence); }

.theme-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4);
}

.theme-icon svg {
  width: var(--icon-size-16);
  height: var(--icon-size-16);
}

.theme-card--information .theme-icon { color: var(--color-theme-information); }
.theme-card--termination .theme-icon { color: var(--color-theme-termination); }
.theme-card--progress .theme-icon { color: var(--color-theme-balance); }
.theme-card--convergence .theme-icon { color: var(--color-theme-convergence); }

.theme-title {
  font-family: var(--font-body);
  font-size: var(--font-size-19);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

/* Axiom cards */
.axioms-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.axiom-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-axiom-inner);
  padding: var(--spacing-4);
  transition: background var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}

.axiom-card:hover {
  background: var(--color-surface-hover);
  transform: translateX(4px);
}

.axiom-header {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
}

.axiom-number {
  flex-shrink: 0;
  width: var(--icon-size-18);
  height: var(--icon-size-18);
  font-size: var(--font-size-16);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-2);
  text-align: center;
}

.axiom-title {
  font-size: var(--font-size-16);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.axiom-description {
  font-size: var(--font-size-16);
  color: var(--color-text-2);
  padding-left: calc(var(--icon-size-18) + var(--spacing-2));
}

/* Hover accents */
.theme-card--information .axiom-card:hover { border-left: 2px solid var(--color-theme-information); }
.theme-card--termination .axiom-card:hover { border-left: 2px solid var(--color-theme-termination); }
.theme-card--progress .axiom-card:hover { border-left: 2px solid var(--color-theme-balance); }
.theme-card--convergence .axiom-card:hover { border-left: 2px solid var(--color-theme-convergence); }

/* Consequences preview */
.consequences-preview {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  margin: var(--spacing-6) var(--spacing-4) var(--spacing-4);
  border-left: 3px solid var(--color-primary);
}

.consequences-title {
  font-family: var(--font-display);
  font-size: var(--font-size-22);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-3);
}

.consequences-intro {
  font-size: var(--font-size-16);
  color: var(--color-text-2);
  text-align: center;
  margin-bottom: var(--spacing-5);
  font-style: italic;
}

.consequences-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-5);
}

.consequence-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-16);
  color: var(--color-text);
}

.consequence-item svg {
  width: var(--icon-size-20);
  height: var(--icon-size-20);
  color: var(--color-accent-purple);
}

/* Individual consequence icon colors matching their semantic meaning */
.consequence-item:has([data-lucide="minimize-2"]) svg { color: var(--color-theme-progression); } /* Strategic Compression - orange */
.consequence-item:has([data-lucide="lock"]) svg { color: var(--color-theme-balance); } /* Irreversible Commitment - purple */
.consequence-item:has([data-lucide="alert-triangle"]) svg { color: var(--color-theme-information); } /* Zugzwang Emergence - blue */
.consequence-item:has([data-lucide="layers"]) svg { color: var(--color-theme-termination); } /* Natural Phase Transitions - red */
.consequence-item:has([data-lucide="clock"]) svg { color: var(--color-theme-termination); } /* Tempo as Resource - red */
.consequence-item:has([data-lucide="flame"]) svg { color: var(--color-theme-balance); } /* Sacrifice Necessity - purple */
.consequence-item:has([data-lucide="git-branch"]) svg { color: var(--color-theme-information); } /* Local vs Global - blue */
.consequence-item:has([data-lucide="target"]) svg { color: var(--color-theme-convergence); } /* Decisive Resolution - amber */

.consequences-outro {
  font-size: var(--font-size-16);
  color: var(--color-text-2);
  text-align: center;
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-relaxed);
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.concept-card { animation: scaleIn var(--duration-slow) var(--ease-out) forwards; }

.theme-card {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
}

.theme-card:nth-child(1) { animation-delay: 100ms; }
.theme-card:nth-child(2) { animation-delay: 200ms; }
.theme-card:nth-child(3) { animation-delay: 300ms; }
.theme-card:nth-child(4) { animation-delay: 400ms; }

.consequences-preview {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
  animation-delay: 600ms;
}

.axiom-card {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
}

/* Slight stagger for axiom cards */
.theme-card:nth-child(1) .axiom-card { animation-delay: 250ms; }
.theme-card:nth-child(2) .axiom-card { animation-delay: 350ms; }
.theme-card:nth-child(3) .axiom-card { animation-delay: 450ms; }
.theme-card:nth-child(4) .axiom-card { animation-delay: 550ms; }