/*
Theme Name: nugucall Custom Design
Description: Custom CSS for nugucall.com (Modern UI, Responsive, Dark Mode)
Version: 1.0.0
*/

/* ==========================================================================
   1. CSS Variables (Core UI tokens)
   ========================================================================== */
:root {
  /* Colors - Light Theme */
  --nugu-bg-color: #FFFFFF;
  --nugu-bg-alt: #F8F9FA;
  --nugu-text-primary: #1F2937; /* Tailwind Gray 800 */
  --nugu-text-secondary: #6B7280; /* Tailwind Gray 500 */
  
  --nugu-primary-color: #2563EB; /* Modern Blue */
  --nugu-primary-hover: #1D4ED8;
  
  --nugu-border-color: #E5E7EB;
  
  --nugu-card-bg: #FFFFFF;
  --nugu-card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --nugu-card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* Typography */
  --nugu-font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  /* Spacing & Layout */
  --nugu-border-radius: 12px;
  --nugu-transition: all 0.3s ease;
  --nugu-max-width: 1200px;
}

/* Colors - Dark Theme (prefers-color-scheme) */
@media (prefers-color-scheme: dark) {
  :root {
    --nugu-bg-color: #111827; /* Tailwind Gray 900 */
    --nugu-bg-alt: #1F2937;
    --nugu-text-primary: #F9FAFB;
    --nugu-text-secondary: #9CA3AF;
    
    --nugu-primary-color: #3B82F6;
    --nugu-primary-hover: #60A5FA;
    
    --nugu-border-color: #374151;
    
    --nugu-card-bg: #1F2937;
    --nugu-card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --nugu-card-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
  }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
body {
  font-family: var(--nugu-font-family);
  background-color: var(--nugu-bg-color);
  color: var(--nugu-text-primary);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--nugu-transition), color var(--nugu-transition);
}

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

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

/* ==========================================================================
   2. Modern Layouts (Grid & Flexbox)
   ========================================================================== */

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

/* Hero Section (Search) */
.nugu-hero {
  background-color: var(--nugu-bg-alt);
  padding: 60px 20px;
  text-align: center;
  border-bottom: 1px solid var(--nugu-border-color);
}

.nugu-hero h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  font-weight: 700;
}

.nugu-search-bar {
  display: flex;
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--nugu-card-shadow);
  border-radius: var(--nugu-border-radius);
  overflow: hidden;
}

.nugu-search-bar input {
  flex: 1;
  padding: 16px 24px;
  border: 1px solid var(--nugu-border-color);
  border-right: none;
  border-radius: var(--nugu-border-radius) 0 0 var(--nugu-border-radius);
  font-size: 1rem;
  outline: none;
  background: var(--nugu-card-bg);
  color: var(--nugu-text-primary);
}

.nugu-search-bar button {
  padding: 16px 32px;
  background-color: var(--nugu-primary-color);
  color: white;
  border: none;
  border-radius: 0 var(--nugu-border-radius) var(--nugu-border-radius) 0;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background-color var(--nugu-transition);
}

.nugu-search-bar button:hover {
  background-color: var(--nugu-primary-hover);
}

/* Quick Categories (Horizontal Scroll for Mobile) */
.nugu-quick-categories {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding: 24px 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
}

.nugu-quick-categories::-webkit-scrollbar {
  display: none; /* Chrome, Safari */
}

.nugu-category-badge {
  flex: 0 0 auto;
  padding: 12px 24px;
  background-color: var(--nugu-card-bg);
  border: 1px solid var(--nugu-border-color);
  border-radius: 30px;
  font-weight: 500;
  color: var(--nugu-text-primary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  transition: var(--nugu-transition);
}

.nugu-category-badge:hover {
  border-color: var(--nugu-primary-color);
  color: var(--nugu-primary-color);
}

/* Grid Layout for Listings */
.nugu-listing-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
  padding: 40px 0;
}

/* Responsive Grid using Media Queries */
@media (min-width: 640px) {
  .nugu-listing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .nugu-listing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   3. Cards & Animations
   ========================================================================== */

.nugu-card {
  background-color: var(--nugu-card-bg);
  border: 1px solid var(--nugu-border-color);
  border-radius: var(--nugu-border-radius);
  padding: 24px;
  box-shadow: var(--nugu-card-shadow);
  transition: var(--nugu-transition);
  display: flex;
  flex-direction: column;
}

/* Hover Animation Effect */
.nugu-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--nugu-card-shadow-hover);
  border-color: var(--nugu-primary-color);
}

.nugu-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--nugu-text-primary);
}

.nugu-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--nugu-text-secondary);
  margin-bottom: 16px;
}

.nugu-badge-status {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #DEF7EC;
  color: #03543F; /* Green for Open */
}

/* For Dark mode badge adjustment */
@media (prefers-color-scheme: dark) {
  .nugu-badge-status {
    background-color: rgba(3, 84, 63, 0.4);
    color: #31C48D;
  }
}

.nugu-card-info-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.nugu-card-info-row svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--nugu-primary-color);
  margin-top: 2px;
}

/* ==========================================================================
   Single Post Details
   ========================================================================== */
.nugu-single-header {
  padding: 40px 0;
  border-bottom: 1px solid var(--nugu-border-color);
}

.nugu-single-title {
  font-size: 2rem;
  margin: 0 0 16px 0;
}

.nugu-single-info-box {
  background-color: var(--nugu-card-bg);
  border: 1px solid var(--nugu-border-color);
  border-radius: var(--nugu-border-radius);
  padding: 32px;
  margin: 40px 0;
  box-shadow: var(--nugu-card-shadow);
}

/* ==========================================================================
   4. Mobile CTA (Sticky Bottom)
   ========================================================================== */
.nugu-mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--nugu-card-bg);
  padding: 16px 20px;
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.05);
  border-top: 1px solid var(--nugu-border-color);
  z-index: 100;
  /* Flex layout for buttons */
}

@media (max-width: 768px) {
  .nugu-mobile-cta {
    display: flex;
    gap: 12px;
  }
  
  /* Add padding to body so sticky CTA doesn't cover content */
  body {
    padding-bottom: 80px; 
  }
}

.nugu-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: var(--nugu-border-radius);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: var(--nugu-transition);
}

.nugu-btn-primary {
  background-color: var(--nugu-primary-color);
  color: white;
  border: none;
}

.nugu-btn-primary:hover {
  background-color: var(--nugu-primary-hover);
  color: white;
}

.nugu-btn-secondary {
  background-color: transparent;
  color: var(--nugu-text-primary);
  border: 1px solid var(--nugu-border-color);
}

.nugu-btn-secondary:hover {
  background-color: var(--nugu-bg-alt);
}