/* ==========================================================================
   ADSENSE FINANCE BLOG - PREMIUM DESIGN SYSTEM (STYLE.CSS)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+KR:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Dark Theme (Default) */
  --bg-primary: #070a13;
  --bg-secondary: #0e1424;
  --bg-tertiary: #162035;
  --bg-card: rgba(17, 25, 42, 0.75);
  --bg-card-hover: rgba(24, 35, 58, 0.9);
  --bg-glass: rgba(14, 20, 36, 0.8);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(14, 165, 233, 0.3);
  --border-subtle: rgba(255, 255, 255, 0.04);

  /* Financial Brand Accents */
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.25);
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-gold: #f59e0b;
  --accent-red: #ef4444;

  --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
  --gradient-bull: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
  --gradient-dark: linear-gradient(180deg, #0e1424 0%, #070a13 100%);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 36px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --font-sans: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  --max-width: 1240px;
  --header-height: 72px;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;

  --border-color: rgba(15, 23, 42, 0.08);
  --border-highlight: rgba(6, 182, 212, 0.35);
  --border-subtle: rgba(15, 23, 42, 0.04);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 20px 35px -8px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.15);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.12), transparent 70%),
    radial-gradient(ellipse 60% 40% at 90% 60%, rgba(139, 92, 246, 0.06), transparent 60%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   TOP TICKER BAR (실시간 마켓 티커)
   ========================================================================== */
.market-ticker-wrap {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: 0.82rem;
  overflow: hidden;
  height: 36px;
  display: flex;
  align-items: center;
}

.ticker-label {
  background: var(--accent-cyan);
  color: #070a13;
  font-weight: 700;
  padding: 0 14px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  z-index: 2;
  white-space: nowrap;
}

.ticker-track {
  display: flex;
  gap: 32px;
  white-space: nowrap;
  animation: tickerSlide 35s linear infinite;
  padding-left: 20px;
}

.ticker-track:hover {
  animation-play-state: paused;
}

@keyframes tickerSlide {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.ticker-name {
  font-weight: 600;
  color: var(--text-primary);
}

.ticker-val {
  font-family: var(--font-mono);
  font-weight: 500;
}

.ticker-up {
  color: var(--accent-red);
  font-weight: 600;
}

.ticker-down {
  color: var(--accent-blue);
  font-weight: 600;
}

/* ==========================================================================
   HEADER & NAVBAR (GLASSMORPHISM)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.15rem;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}

.logo-text {
  white-space: nowrap;
  background: linear-gradient(120deg, var(--text-primary) 60%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-tag {
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.3);
  font-weight: 700;
  text-transform: uppercase;
  margin-left: 2px;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.nav-link {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  color: var(--accent-cyan);
  font-weight: 600;
}

.nav-link-badge {
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 99px;
  background: var(--accent-emerald);
  color: #070a13;
  font-weight: 800;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
}

/* ==========================================================================
   HERO BANNER
   ========================================================================== */
.hero-section {
  padding: 48px 0 32px;
  position: relative;
}

.hero-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 99px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--accent-emerald);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 18px;
}

.hero-title span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 28px;
}

.hero-stats {
  display: flex;
  gap: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.hero-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-img-wrap:hover img {
  transform: scale(1.03);
}

/* ==========================================================================
   CATEGORY BAR & QUICK TAGS
   ========================================================================== */
.category-filter-wrap {
  margin: 32px 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.category-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.cat-tab {
  padding: 8px 18px;
  border-radius: 99px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cat-tab:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

.cat-tab.active {
  background: var(--gradient-primary);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}

.search-box {
  position: relative;
  min-width: 260px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border-radius: 99px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ==========================================================================
   MAIN LAYOUT (CONTENT + STICKY SIDEBAR)
   ========================================================================== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 36px;
  margin: 32px 0 64px;
  align-items: start;
}

.content-area {
  min-width: 0;
}

.sidebar-area {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ==========================================================================
   FEATURED / POST CARDS GRID
   ========================================================================== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.45rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title-badge {
  font-size: 0.75rem;
  padding: 3px 9px;
  border-radius: 99px;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  font-weight: 700;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.post-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.post-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-thumb {
  transform: scale(1.05);
}

.post-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(7, 10, 19, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  z-index: 2;
}

.post-badge.undervalued {
  color: var(--accent-cyan);
  border-color: rgba(6, 182, 212, 0.4);
}

.post-badge.breakout {
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.4);
}

.post-badge.dividend {
  color: var(--accent-gold);
  border-color: rgba(245, 158, 11, 0.4);
}

.post-badge.tax {
  color: var(--accent-purple);
  border-color: rgba(139, 92, 246, 0.4);
}

.post-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.post-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.post-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.post-card:hover .post-title {
  color: var(--accent-cyan);
}

.post-excerpt {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
}

.author-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text-secondary);
}

.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 99px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
}

.read-more-link {
  font-weight: 700;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   SIDEBAR WIDGETS
   ========================================================================== */
.widget-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.widget-title span {
  color: var(--accent-cyan);
}

/* Stock Mini Calculator Widget */
.quick-calc-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  font-family: var(--font-mono);
}

.form-input:focus {
  border-color: var(--accent-cyan);
}

.btn-primary {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: var(--gradient-primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
}

.calc-mini-res {
  margin-top: 10px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  text-align: center;
  display: none;
}

.calc-mini-res.show {
  display: block;
}

.calc-mini-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-emerald);
  font-family: var(--font-mono);
}

/* Popular Posts Widget */
.popular-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.popular-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.popular-rank {
  font-size: 1.1rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-muted);
  width: 20px;
}

.popular-item:nth-child(1) .popular-rank { color: var(--accent-gold); }
.popular-item:nth-child(2) .popular-rank { color: var(--accent-cyan); }
.popular-item:nth-child(3) .popular-rank { color: var(--accent-emerald); }

.popular-link {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.popular-link:hover {
  color: var(--accent-cyan);
}

/* Tag Cloud Widget */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-item {
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.tag-item:hover {
  background: var(--accent-cyan);
  color: #070a13;
  font-weight: 700;
}

/* ==========================================================================
   FOOTER (COMPLIANCE & SEO)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.footer-disclaimer-box {
  padding: 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 30px;
}

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

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE / TABLET)
   ========================================================================== */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
  .sidebar-area {
    position: static;
    margin-top: 20px;
  }
  .hero-card {
    grid-template-columns: 1fr;
    padding: 32px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }
  .posts-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .hero-title {
    font-size: 1.9rem;
  }
  .hero-stats {
    flex-direction: column;
    gap: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}