/**
 * Popyca Games - Global Design System
 * Clean, tactile, light-warm aesthetic for high-performance browser games.
 * Built with CSS custom properties, zero external heavy frameworks.
 */

:root {
  /* Color Palette - Warm Neutral & Terracotta / Amber */
  --color-bg: #faf7f2;
  --color-surface: #ffffff;
  --color-surface-muted: #f4efe6;
  --color-surface-alt: #ece5d8;
  --color-border: #e6dfd3;
  --color-border-hover: #d1c6b4;

  --color-ink: #1f1d1a;
  --color-ink-secondary: #4a433a;
  --color-ink-muted: #787063;
  --color-ink-subtle: #a09789;

  --color-primary: #e26938;
  --color-primary-hover: #cb5626;
  --color-primary-subtle: #fdf2ec;

  --color-accent: #8c7a65;
  --color-accent-hover: #786753;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Layout */
  --container-max: 1160px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --shadow-sm: 0 1px 3px rgba(31, 29, 26, 0.04), 0 1px 2px rgba(31, 29, 26, 0.03);
  --shadow-md: 0 4px 10px rgba(31, 29, 26, 0.05), 0 2px 4px rgba(31, 29, 26, 0.03);
  --shadow-lg: 0 10px 25px rgba(31, 29, 26, 0.08), 0 4px 10px rgba(31, 29, 26, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Box Sizing & Resets */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-ink);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1 0 auto;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

/* Focus Outline for Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  background: var(--color-ink);
  color: #ffffff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* Global Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Navigation */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

.brand-logo:hover {
  color: var(--color-primary);
}

.brand-icon-svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-ink-secondary);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--color-ink);
}

/* Mobile Navigation Dropdown */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 20px;
    gap: 16px;
    align-items: flex-start;
    box-shadow: var(--shadow-md);
  }

  .site-nav.open {
    display: flex;
  }
}

/* Hero & Portal Intro */
.hero-section {
  padding: clamp(32px, 6vw, 56px) 0 clamp(24px, 4vw, 40px);
  text-align: center;
}

.hero-tagline {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.hero-title {
  font-size: clamp(2rem, 5.5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  line-height: 1.15;
  margin: 0 auto 14px;
  max-width: 780px;
}

.hero-description {
  font-size: clamp(1rem, 2.5vw, 1.15rem);
  color: var(--color-ink-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.55;
}

/* Featured Game Showcase Card */
.featured-showcase-section {
  padding: 0 0 clamp(32px, 5vw, 48px);
}

.featured-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

@media (max-width: 820px) {
  .featured-card {
    grid-template-columns: 1fr;
  }
}

.featured-card:hover {
  box-shadow: var(--shadow-lg);
}

.featured-media {
  background: linear-gradient(135deg, #f7f3ec 0%, #ece5d8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 36px 24px;
  position: relative;
  min-height: 280px;
}

.featured-graphic {
  width: 100%;
  max-width: 280px;
  height: auto;
  filter: drop-shadow(0 8px 16px rgba(45, 38, 30, 0.08));
}

.featured-content {
  padding: clamp(24px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.featured-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0 0 12px;
  line-height: 1.2;
}

.featured-summary {
  font-size: 1rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
  margin: 0 0 24px;
}

.featured-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

.featured-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  box-shadow: 0 3px 8px rgba(226, 105, 56, 0.28);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  width: fit-content;
}

.btn-cta:hover {
  background-color: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 5px 14px rgba(226, 105, 56, 0.35);
}

.btn-cta:active {
  transform: translateY(0);
}

/* Catalog / Games Grid Section */
.catalog-section {
  padding: clamp(24px, 4vw, 48px) 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}

.section-title {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0;
}

.section-subtitle {
  font-size: 0.92rem;
  color: var(--color-ink-muted);
  margin-top: 4px;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

/* Game Card Component */
.game-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
  color: inherit;
}

.game-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

.game-card-media {
  aspect-ratio: 16 / 10;
  background: var(--color-surface-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  overflow: hidden;
}

.game-card-icon {
  width: 80px;
  height: 80px;
  transition: transform var(--transition-fast);
}

.game-card:hover .game-card-icon {
  transform: scale(1.05);
}

.game-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-playable {
  background-color: #2e7d32;
  color: #ffffff;
}

.badge-soon {
  background-color: #796853;
  color: #ffffff;
}

.game-card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.game-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-ink);
  margin: 0 0 6px;
}

.game-card-desc {
  font-size: 0.88rem;
  color: var(--color-ink-muted);
  line-height: 1.5;
  margin: 0 0 16px;
  flex: 1;
}

.game-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.game-card-disabled {
  opacity: 0.85;
  cursor: default;
}

.game-card-disabled:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--color-border);
}

/* Ad Slot System (Monetization Architecture) */
.ad-slot-wrapper {
  width: 100%;
  margin: 24px auto;
  display: flex;
  justify-content: center;
}

.ad-slot {
  display: none; /* Inactive by default; enabled when advertising partner is configured */
  width: 100%;
  max-width: 728px;
  min-height: 90px;
  background-color: var(--color-surface-muted);
  border: 1px dashed var(--color-border-hover);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-ink-subtle);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* When ads are enabled via data-ad-active */
.ad-slot[data-ad-active="true"] {
  display: flex;
}

/* Informational Content Sections */
.info-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 36px);
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.info-card h1 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-top: 0;
  margin-bottom: 16px;
}

.info-card h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--color-ink);
}

.info-card p,
.info-card ul {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--color-ink-secondary);
}

.info-card ul {
  padding-left: 24px;
}

.info-card li {
  margin-bottom: 6px;
}

/* Owner Action Notice in Legal Scaffolds */
.owner-notice-box {
  background-color: #fff9e6;
  border-left: 4px solid #deb02b;
  padding: 14px 18px;
  border-radius: 4px;
  margin-bottom: 24px;
  font-size: 0.9rem;
  color: #5c470a;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0 28px;
  margin-top: auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

@media (max-width: 768px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.footer-brand h3 {
  font-size: 1.15rem;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--color-ink);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  max-width: 380px;
  line-height: 1.55;
  margin: 0;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
  margin: 0 0 12px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-ink-secondary);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-surface-muted);
  font-size: 0.82rem;
  color: var(--color-ink-muted);
  flex-wrap: wrap;
  gap: 12px;
}