/* Modern Emoji Portal Core Styling & Theme Variables */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* HSL Color Schemes */
  --primary-h: 224;
  --primary-s: 70%;
  --primary-l: 45%;
  --primary: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
  --primary-hover: hsl(var(--primary-h), var(--primary-s), calc(var(--primary-l) - 8%));
  
  --secondary: #64748b; /* Cool grey slate */
  --accent: #3b82f6; /* Clean sapphire blue */
  
  /* Shared Defaults */
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Light Theme Variables */
  --bg-color: #f8fafc;
  --bg-card: #ffffff;
  --bg-nav: rgba(255, 255, 255, 0.85);
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.6);
  --ad-bg: #f1f5f9;
  --ad-border: #cbd5e1;
}

[data-theme="dark"] {
  /* Dark Theme Variables */
  --bg-color: #0b0f19;
  --bg-card: #131b2e;
  --bg-nav: rgba(19, 27, 46, 0.85);
  --border-color: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-inset: inset 0 2px 4px 0 rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(19, 27, 46, 0.65);
  --glass-border: rgba(30, 41, 59, 0.5);
  --ad-bg: #1e293b;
  --ad-border: #334155;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
}

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

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

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
header {
  position: sticky;
  top: 16px;
  margin: 16px auto;
  width: calc(100% - 48px);
  max-width: 1200px;
  border-radius: 20px;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.12);
  transition: background-color var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.04em;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.85;
}

.logo .logo-bold {
  font-weight: 800;
  color: var(--text-primary);
}

.logo .logo-thin {
  font-weight: 400;
  color: var(--text-secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Theme Toggle Button */
.theme-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-normal);
}

.theme-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.theme-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.theme-btn .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-btn .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-btn .sun-icon {
  display: block;
}

/* Mobile Menu Button */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle svg {
  width: 28px;
  height: 28px;
}

/* Main Content Area */
main {
  flex-grow: 1;
  padding: 40px 0;
}

/* Hero Section */
.hero {
  text-align: center;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  margin-bottom: 12px;
  line-height: 1.1;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Google AdSense Responsive Placeholders */
.ad-slot {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 30px auto;
  padding: 15px;
  border: 1px dashed var(--ad-border);
  border-radius: 12px;
  background-color: var(--ad-bg);
  position: relative;
  min-height: 100px;
  max-width: 100%;
  overflow: hidden;
}

.ad-slot::before {
  content: "ADVERTISEMENT";
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
}

.ad-slot-header {
  width: 728px;
  height: 90px;
  max-width: 100%;
}

.ad-slot-sidebar {
  width: 300px;
  height: 250px;
}

.ad-slot-inline {
  width: 100%;
  min-height: 100px;
  max-height: 280px;
}

.ad-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* Footer Section */
footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: auto;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 16px;
  max-width: 280px;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.footer-social {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.footer-social-link:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.footer-social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 30px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: var(--text-muted);
}

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

/* Custom Toast Notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary);
  color: var(--text-primary);
  padding: 16px 20px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 250px;
  opacity: 0;
  transform: translateY(20px);
  animation: toast-in 0.3s forwards, toast-out 0.3s 2.7s forwards;
  pointer-events: auto;
}

@keyframes toast-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

/* Responsive Styles */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background-color: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    align-items: stretch;
    display: none;
    box-shadow: var(--shadow-lg);
    z-index: 99;
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-link {
    font-size: 1.15rem;
    padding: 12px;
    text-align: center;
    border-bottom: none;
    border-radius: 8px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
  }
  
  .nav-link.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .ad-slot-header {
    width: 100%;
    height: auto;
    aspect-ratio: 728/90;
  }
}

/* --- Breadcrumbs (shared across all pages) --- */
.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 18px 0 4px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs .crumb-sep { color: var(--text-muted); opacity: 0.6; }
.breadcrumbs .crumb-current { color: var(--text-primary); font-weight: 600; }