:root {
      --primary-color: #2e7d32;
      --primary-light: #4caf50;
      --primary-dark: #1b5e20;
      --secondary-color: #ffb300;
      --accent-color: #e11d48;
      --bg-color: #f8fafc;
      --card-bg: #ffffff;
      --text-primary: #0f172a;
      --text-secondary: #64748b;
      --border-color: #e2e8f0;
      --glass-bg: rgba(255, 255, 255, 0.8);
      --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 -2px rgba(0, 0, 0, 0.05);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

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

body {
      font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background-color: var(--bg-color);
      color: var(--text-primary);
      line-height: 1.6;
}

.container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
}

/* Header */
.app-header {
      background: var(--glass-bg);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 1000;
      padding: 1rem 0;
}

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

.logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      text-decoration: none;
      color: var(--primary-dark);
      font-weight: 800;
      font-size: 1.25rem;
}

.logo i {
      font-size: 1.5rem;
      color: var(--primary-color);
}

.desktop-nav ul {
      display: flex;
      list-style: none;
      gap: 2.5rem;
}

.desktop-nav a {
      text-decoration: none;
      color: var(--text-secondary);
      font-weight: 600;
      font-size: 1rem;
      transition: var(--transition);
}

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

.nav-actions {
      display: flex;
      align-items: center;
      gap: 1.5rem;
}

.btn-icon {
      background: none;
      border: none;
      font-size: 1.1rem;
      color: var(--text-secondary);
      cursor: pointer;
}

.btn-primary {
      background-color: var(--primary-color);
      color: white;
      border: none;
      padding: 0.6rem 1.5rem;
      border-radius: 0.5rem;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
}

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

/* Hero Section */
.hero-section {
      padding: 5rem 0;
      background: linear-gradient(135deg, rgba(46, 125, 50, 0.05) 0%, rgba(255, 179, 0, 0.05) 100%);
      text-align: center;
}

.badge {
      background-color: rgba(46, 125, 50, 0.1);
      color: var(--primary-color);
      padding: 0.4rem 1rem;
      border-radius: 2rem;
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 1.5rem;
      display: inline-block;
}

.hero-section h1 {
      font-size: 3.5rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 1.5rem;
}

.highlight {
      color: var(--primary-color);
}

.hero-section p {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 700px;
      margin: 0 auto 3rem;
}

.hero-stats {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 3rem;
}

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

.stat-label {
      font-size: 0.9rem;
      color: var(--text-secondary);
}

.stat-value {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--primary-dark);
}

.divider {
      width: 1px;
      height: 40px;
      background-color: var(--border-color);
}

/* Dashboard Section */
.section-header {
      margin-bottom: 2.5rem;
}

.section-header h2 {
      font-size: 1.75rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 0.75rem;
}

.dashboard-section {
      padding: 4rem 1.5rem;
}

.dashboard-grid {
      display: grid;
      grid-template-columns: 2.5fr 1fr;
      gap: 2rem;
}

.card {
      background: var(--card-bg);
      border-radius: 1.25rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      padding: 1.5rem;
}

.chart-card {
      min-height: 400px;
      display: flex;
      flex-direction: column;
}

.card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
}

.chart-legend {
      display: flex;
      gap: 1.5rem;
      font-size: 0.9rem;
      font-weight: 600;
}

.legend-item i.color-primary {
      color: var(--primary-color);
}

.legend-item i.color-secondary {
      color: var(--secondary-color);
}

.chart-body {
      flex: 1;
      position: relative;
      width: 100%;
      height: 300px;
}

.stats-column {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
}

.mini-card {
      display: flex;
      align-items: center;
      gap: 1.25rem;
      padding: 1.25rem;
}

.mini-icon {
      width: 54px;
      height: 54px;
      border-radius: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
}

.mini-icon.price-down {
      background: rgba(16, 185, 129, 0.1);
      color: #059669;
}

.mini-icon.price-up {
      background: rgba(225, 29, 72, 0.1);
      color: #e11d48;
}

.mini-icon.best-deal {
      background: rgba(255, 179, 0, 0.1);
      color: #d97706;
}

.mini-info {
      display: flex;
      flex-direction: column;
}

.mini-info .label {
      font-size: 0.8rem;
      color: var(--text-secondary);
}

.mini-info .value {
      font-size: 1.1rem;
      font-weight: 700;
      margin: 0.2rem 0;
}

.mini-info .change {
      font-size: 0.9rem;
      font-weight: 800;
}

.change.negative {
      color: #059669;
}

.change.positive {
      color: #e11d48;
}

.badge-fresh {
      background: var(--primary-color);
      color: white;
      font-size: 0.7rem;
      padding: 0.2rem 0.5rem;
      border-radius: 0.25rem;
      width: fit-content;
}

/* Comparison Table */
.comparison-section {
      padding-bottom: 4rem;
}

.table-responsive {
      width: 100%;
      overflow-x: auto;
}

.comparison-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 1rem;
}

.comparison-table th {
      text-align: left;
      padding: 1rem;
      border-bottom: 2px solid var(--border-color);
      color: var(--text-secondary);
      font-weight: 700;
}

.comparison-table td {
      padding: 1.25rem 1rem;
      border-bottom: 1px solid var(--border-color);
}

.comparison-row:hover {
      background-color: #f8fafc;
}

/* Tips Section */
.tip-banner {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
      border-radius: 1.5rem;
      padding: 3rem;
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
}

.tip-text h3 {
      font-size: 1.75rem;
      margin-bottom: 1rem;
}

.tip-text p {
      font-size: 1.1rem;
      opacity: 0.9;
      max-width: 600px;
      margin-bottom: 2rem;
}

.btn-outline {
      border: 1px solid rgba(255, 255, 255, 0.5);
      color: white;
      text-decoration: none;
      padding: 0.75rem 1.5rem;
      border-radius: 0.5rem;
      font-weight: 700;
      transition: var(--transition);
}

.btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.1);
}

/* Footer */
.app-footer {
      background-color: #0f172a;
      color: #f8fafc;
      padding: 5rem 0 2rem;
}

.footer-content {
      display: flex;
      justify-content: space-between;
      margin-bottom: 4rem;
}

.footer-brand .logo {
      color: white;
      margin-bottom: 1rem;
}

.footer-brand p {
      color: #94a3b8;
      max-width: 300px;
}

.link-group h4 {
      margin-bottom: 1.5rem;
}

.link-group ul {
      list-style: none;
}

.link-group li {
      margin-bottom: 0.75rem;
}

.link-group a {
      color: #94a3b8;
      text-decoration: none;
}

.link-group a:hover {
      color: white;
}

.footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 2rem;
      text-align: center;
      color: #475569;
}