/* ===== CSS Variables & Reset ===== */
:root {
  --silver-primary: #c0c0c0;
  --silver-dark: #71706e;
  --silver-light: #e8e8e8;
  --silver-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-primary: #0f1119;
  --bg-secondary: #1a1d2e;
  --bg-card: #232740;
  --bg-card-hover: #2a2f4a;
  --text-primary: #f0f0f5;
  --text-secondary: #a0a3b5;
  --text-muted: #6b6f85;
  --accent: #7c83ff;
  --accent-light: #a5abff;
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.1);
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --border: #2e3348;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent-light);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

/* ===== Header ===== */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  padding: 0.85rem 0;
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--silver-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
}

.nav {
  display: flex;
  gap: 0.25rem;
}

.nav a {
  color: var(--text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  color: var(--text-primary);
  background: var(--bg-card);
  text-decoration: none;
  border-bottom-color: var(--accent);
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.breadcrumbs-list {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.breadcrumbs-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs-list li::after {
  content: ">";
  color: var(--text-muted);
}

.breadcrumbs-list li:last-child::after {
  content: none;
}

.breadcrumbs-list a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.breadcrumbs-list a:hover {
  color: var(--accent-light);
}

/* ===== Contextual Intro ===== */
.contextual-intro {
  padding: 0 0 1.5rem;
}

.intro-text {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
}

.intro-text p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.intro-text p:last-child {
  margin-bottom: 0;
}

/* ===== Hero / Price Banner ===== */
.hero {
  padding: 2.5rem 0 1.5rem;
}

.price-banner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
}

.price-main {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.price-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.price-value {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.price-usd {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.price-change {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
  width: fit-content;
}

.price-change.up {
  color: var(--green);
  background: var(--green-bg);
}

.price-change.down {
  color: var(--red);
  background: var(--red-bg);
}

.price-meta {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.meta-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.price-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.price-stat {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  min-width: 140px;
}

.price-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.price-stat-value {
  font-size: 1.15rem;
  font-weight: 700;
}

/* ===== Section titles ===== */
.section {
  padding: 2rem 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title-icon {
  font-size: 1.3rem;
}

/* ===== Chart Section ===== */
.chart-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.range-buttons {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-secondary);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.range-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
}

.range-btn:hover {
  color: var(--text-primary);
}

.range-btn.active {
  background: var(--accent);
  color: #fff;
}

.currency-toggle {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-secondary);
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.currency-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition);
}

.currency-btn:hover {
  color: var(--text-primary);
}

.currency-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.chart-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  min-height: 260px;
}

.chart-wrapper canvas {
  width: 100% !important;
  max-height: 300px;
}

/* ===== Unit Price Table ===== */
.price-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
}

.price-table th {
  background: var(--bg-secondary);
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 600;
  padding: 0.85rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.price-table td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.price-table tr:last-child td {
  border-bottom: none;
}

.price-table tr:hover td {
  background: var(--bg-card-hover);
}

.price-table .unit-label {
  color: var(--text-secondary);
  font-weight: 500;
}

.price-table .price-cell {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ===== Info Cards Grid ===== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition);
}

.info-card:hover {
  border-color: var(--accent);
}

.info-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.info-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== FAQ Section ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  padding: 1.15rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-arrow {
  transition: transform var(--transition);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ===== SEO Description ===== */
.seo-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.seo-section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.seo-section p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  max-width: 900px;
}

.seo-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

/* ===== Latest Articles ===== */
.latest-articles {
  padding: 2rem 0 1rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), border-color var(--transition);
}

.article-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.article-card-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.article-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-card-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.article-card-title a:hover {
  color: var(--accent-light);
  text-decoration: none;
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.article-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

.article-card-link:hover {
  color: var(--accent-light);
  text-decoration: none;
}

/* ===== Compliant Footer ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

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

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 0.75rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-col ul li a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

/* ===== Loading State ===== */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  color: var(--text-muted);
  gap: 0.75rem;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-card) 25%,
    var(--bg-card-hover) 50%,
    var(--bg-card) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ===== Converter Section ===== */
.converter-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.converter-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: end;
}

.converter-field label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.converter-field input,
.converter-field select {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.converter-field input:focus,
.converter-field select:focus {
  outline: none;
  border-color: var(--accent);
}

.converter-swap {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.25rem;
  padding-bottom: 0.25rem;
}

.converter-result {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  text-align: center;
}

.converter-result-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.converter-result-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

@media (max-width: 600px) {
  .converter-grid {
    grid-template-columns: 1fr;
  }

  .converter-swap {
    transform: rotate(90deg);
    padding: 0;
  }
}

/* ===== Disclaimer ===== */
.disclaimer {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== Blog Index ===== */
.page-hero {
  padding: 2.5rem 0 1.5rem;
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.2;
}

.page-hero p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 0.5rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), border-color var(--transition);
}

.blog-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.blog-card-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  background: rgba(124, 131, 255, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  width: fit-content;
  margin-bottom: 0.75rem;
}

.blog-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.blog-card-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.blog-card-title a:hover {
  color: var(--accent-light);
  text-decoration: none;
}

.blog-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.blog-card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* ===== Blog Article ===== */
.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

.article-content h1 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 1rem;
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.article-content h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-content p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.article-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.article-cta {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 2rem;
  margin-top: 2.5rem;
  text-align: center;
}

.article-cta h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  margin-top: 0;
}

.article-cta p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.article-cta .cta-button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition);
}

.article-cta .cta-button:hover {
  background: var(--accent-light);
  text-decoration: none;
}

/* ===== Static Pages ===== */
.static-content {
  max-width: 800px;
  margin: 0 auto;
}

.static-content h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  line-height: 1.25;
}

.static-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.static-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.static-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.static-content ul {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.static-content ul li {
  margin-bottom: 0.35rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  .nav {
    display: none;
    order: 3;
    width: 100%;
  }

  .nav.open {
    display: flex;
    flex-direction: column;
    padding-bottom: 0.75rem;
  }

  .nav.open a {
    padding: 0.6rem 0.85rem;
  }

  .price-banner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .price-value {
    font-size: 2.25rem;
  }

  .price-side {
    grid-template-columns: 1fr 1fr;
  }

  .price-stat {
    min-width: 0;
  }

  .chart-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .range-buttons,
  .currency-toggle {
    justify-content: center;
  }

  .header .container {
    justify-content: space-between;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .price-value {
    font-size: 1.85rem;
  }

  .price-side {
    grid-template-columns: 1fr;
  }

  .range-btn,
  .currency-btn {
    padding: 0.35rem 0.6rem;
    font-size: 0.8rem;
  }

  .chart-wrapper {
    padding: 1rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .article-content h1 {
    font-size: 1.5rem;
  }

  .page-hero h1 {
    font-size: 1.5rem;
  }
}