:root {
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-primary: #2563eb;
  --accent-secondary: #4f46e5;
  --positive: #10b981;
  --negative: #ef4444;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px -2px rgba(0,0,0,0.05);
  --font-main: 'Pretendard', sans-serif;

  /* Risk Level Colors */
  --risk-1: #ff4d4d; --risk-2: #ff944d; --risk-3: #ffdb4d;
  --risk-4: #a3ff4d; --risk-5: #4dff88; --risk-6: #4d94ff;

  /* Summary Themes */
  --gainer-theme: #059669; --average-theme: #2563eb; --dividend-theme: #d97706;
}

* { box-sizing: border-box; margin: 0; padding: 0; scroll-behavior: smooth; }

body { font-family: var(--font-main); background-color: var(--bg-color); color: var(--text-primary); line-height: 1.6; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 1.5rem; }

/* AdSense Placeholder */
.ad-placeholder { background: #f1f5f9; border: 1px dashed var(--border-color); color: var(--text-secondary); text-align: center; padding: 1.5rem; border-radius: 12px; margin: 2rem 0; font-size: 0.9rem; font-style: italic; }

/* Top Navigation */
.top-nav { background: #fff; border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; }
.nav-inner { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--accent-primary); letter-spacing: -0.05em; }
.nav-links { display: flex; list-style: none; gap: 2rem; }
.nav-links a { text-decoration: none; color: var(--text-secondary); font-weight: 600; font-size: 0.95rem; transition: color 0.2s; }
.nav-links a:hover { color: var(--accent-primary); }

/* Header */
.main-header { padding: 3rem 0; }
.header-content { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.title-group h1 { font-size: 2.8rem; font-weight: 800; color: var(--text-primary); letter-spacing: -0.03em; margin-bottom: 0.5rem; }
.search-wrapper { position: relative; flex: 1; max-width: 400px; }
#etf-search { width: 100%; background: #fff; border: 2px solid var(--border-color); padding: 0.9rem 1rem 0.9rem 3.2rem; border-radius: 16px; font-size: 1rem; }
.search-icon { position: absolute; left: 1.2rem; top: 50%; transform: translateY(-50%); opacity: 0.4; }

/* Summary Cards */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-bottom: 4rem; }
.summary-card { display: flex; align-items: center; gap: 1.5rem; background: #fff; border: 1px solid var(--border-color); padding: 2rem; border-radius: 24px; box-shadow: var(--shadow-md); transition: transform 0.3s; }
.summary-card:hover { transform: translateY(-8px); }
.card-icon { font-size: 2.5rem; width: 60px; height: 60px; display: flex; align-items: center; justify-content: center; background: #f8fafc; border-radius: 18px; }
.summary-card .value { font-size: 2.4rem; font-weight: 900; line-height: 1.1; }
.card-gainer .value { color: var(--gainer-theme); }
.card-average .value { color: var(--average-theme); }
.card-dividend .value { color: var(--dividend-theme); }

/* Dashboard Nav & Pills */
.nav-filter-wrapper { background: #fff; border: 1px solid var(--border-color); border-radius: 24px; padding: 2rem; margin-bottom: 2rem; box-shadow: var(--shadow-sm); }
.category-nav { display: flex; gap: 1rem; padding-bottom: 1.5rem; border-bottom: 1px dashed var(--border-color); margin-bottom: 1.5rem; flex-wrap: wrap; }
.nav-btn { background: #f1f5f9; border: 1px solid var(--border-color); color: var(--text-secondary); padding: 0.7rem 1.8rem; border-radius: 12px; cursor: pointer; font-weight: 700; transition: all 0.2s; }
.nav-btn.active { background: var(--text-primary); color: #fff; border-color: var(--text-primary); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.category-pills { display: flex; gap: 0.8rem; overflow-x: auto; padding-bottom: 0.5rem; }
.pill { background: transparent; border: 1px solid var(--border-color); color: var(--text-secondary); padding: 0.5rem 1.4rem; border-radius: 50px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.pill.active { background: var(--accent-primary); color: #fff; border-color: var(--accent-primary); }

/* Table Section */
.dashboard-card { background: #fff; border: 1px solid var(--border-color); border-radius: 28px; padding: 1.5rem; box-shadow: var(--shadow-md); margin-bottom: 4rem; overflow: hidden; }
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: separate; border-spacing: 0 10px; min-width: 950px; }
th { padding: 1rem; text-align: left; font-size: 0.9rem; color: var(--text-secondary); font-weight: 700; }
td { padding: 1.5rem 1rem; background: #fff; border-top: 1px solid #f1f5f9; border-bottom: 1px solid #f1f5f9; vertical-align: middle; }
td:first-child { border-left: 1px solid #f1f5f9; border-radius: 16px 0 0 16px; }
td:last-child { border-right: 1px solid #f1f5f9; border-radius: 0 16px 16px 0; }
tr:hover td { background: #f8fafc; }

.etf-name { font-weight: 800; font-size: 1.1rem; color: var(--text-primary); }
.risk-badge { font-size: 0.75rem; padding: 4px 10px; border-radius: 6px; font-weight: 800; color: #000 !important; }
.risk-1 { background-color: var(--risk-1); } .risk-2 { background-color: var(--risk-2); }
.risk-3 { background-color: var(--risk-3); } .risk-4 { background-color: var(--risk-4); }
.risk-5 { background-color: var(--risk-5); } .risk-6 { background-color: var(--risk-6); }

/* [AdSense Content Section] Content Hub */
.content-hub { padding: 5rem 0; background: #fff; border-radius: 40px; margin: 4rem 0; box-shadow: var(--shadow-sm); }
.section-title { text-align: center; font-size: 2.2rem; font-weight: 800; margin-bottom: 3rem; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2.5rem; padding: 0 3rem; }
.info-article { background: #f8fafc; padding: 2.5rem; border-radius: 24px; border: 1px solid var(--border-color); }
.article-tag { display: inline-block; background: var(--accent-primary); color: #fff; font-size: 0.75rem; font-weight: 800; padding: 4px 12px; border-radius: 100px; margin-bottom: 1.2rem; }
.info-article h3 { font-size: 1.4rem; margin-bottom: 1rem; line-height: 1.4; color: var(--text-primary); }
.info-article p { font-size: 1rem; color: var(--text-secondary); line-height: 1.8; }

/* Contact Section */
.simple-contact { padding: 4rem 0; }
.contact-inner { max-width: 800px; margin: 0 auto; }
.contact-form-simple { background: #fff; padding: 2.5rem; border-radius: 24px; border: 1px solid var(--border-color); box-shadow: var(--shadow-md); display: flex; flex-direction: column; gap: 1.2rem; }
.input-group { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.contact-form-simple input, .contact-form-simple textarea { background: #f8fafc; border: 1px solid var(--border-color); padding: 1rem 1.2rem; border-radius: 12px; font-size: 1rem; font-family: inherit; }
.simple-submit { background: var(--text-primary); color: #fff; padding: 1.2rem; border-radius: 14px; border: none; font-weight: 800; font-size: 1.1rem; cursor: pointer; transition: all 0.3s; }
.simple-submit:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }

/* Footer & Legal */
footer { padding: 6rem 0; border-top: 1px solid var(--border-color); background: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 4rem; margin-bottom: 4rem; }
.footer-brand p { font-size: 0.95rem; color: var(--text-secondary); margin-top: 1rem; }
.footer-nav h4, .footer-sources h4 { margin-bottom: 1.5rem; font-size: 1.1rem; font-weight: 800; }
.policy-links, .footer-sources ul { list-style: none; display: flex; flex-direction: column; gap: 0.8rem; }
.policy-links a, .footer-sources li { text-decoration: none; color: var(--text-secondary); font-size: 0.9rem; }
.final-notice { background: #f8fafc; padding: 2rem; border-radius: 16px; border-left: 5px solid var(--accent-primary); margin-bottom: 3rem; }
.final-notice p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.5rem; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr; }
  .header-content { flex-direction: column; align-items: flex-start; }
  .article-grid { padding: 0 1.5rem; }
}