:root {
  --bg: #020617;
  --bg-elevated: #020617;
  --accent: #22c55e;
  --accent-soft: rgba(34, 197, 94, 0.18);
  --accent-strong: rgba(34, 197, 94, 0.6);
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --border-subtle: #1f2937;
  --border-strong: #334155;
  --radius-lg: 1rem;
  --radius-md: 0.75rem;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.6);
  --container-width: 1120px;
  --nav-height: 68px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top, #0b1120 0, #020617 40%, #000 100%);
  color: var(--text-main);
}

/* Containers & sections */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 3.5rem 0;
}

.section-alt {
  background: radial-gradient(circle at top, rgba(30, 64, 175, 0.4), #020617 65%);
}

.section-intro {
  max-width: 640px;
  color: var(--text-muted);
}

/* Header / nav */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(2, 6, 23, 0.97), rgba(2, 6, 23, 0.9));
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

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

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-main {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

.main-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.main-nav a {
  margin-left: 1.25rem;
  text-decoration: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  position: relative;
  padding-bottom: 0.35rem;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 180ms ease-out;
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a.active {
  color: var(--text-main);
}

.nav-icon {
  font-size: 1.1rem;
  line-height: 1;
  padding-bottom: 0;
}

.nav-icon::after {
  display: none;
}

/* Page hero */

.page-hero {
  padding: 3rem 0 1.5rem;
}

.page-hero h1 {
  font-size: 2rem;
  margin: 0 0 0.4rem;
}

.page-hero p {
  margin: 0;
  color: var(--text-muted);
}

/* Markets hero & grid */

.markets-hero {
  padding-bottom: 0.25rem;
}

.markets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* Market card */

.market-card {
  background: radial-gradient(circle at top left, var(--accent-soft), #020617 60%);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  min-height: 260px;
}

.market-card-header {
  padding: 0.9rem 1.1rem 0.6rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.9);
}

.market-card-header h3 {
  margin: 0 0 0.2rem;
  font-size: 0.98rem;
}

.market-card-header p {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.market-symbol {
  margin-top: 0.4rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.market-card-body {
  flex: 1;
  padding: 0.6rem 0.8rem 0.4rem;
}

.market-card-body canvas {
  width: 100% !important;
  height: 170px !important;
}

.market-card-footer {
  padding: 0.55rem 1.1rem 0.7rem;
  border-top: 1px solid rgba(51, 65, 85, 0.9);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.market-stat-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.market-stat-value {
  display: block;
  margin-top: 0.15rem;
}

/* Layout helpers */

.layout-two {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: flex-start;
}

/* Cards & info */

.info-box,
.info-card {
  background: radial-gradient(circle at top left, rgba(148, 163, 184, 0.18), #020617 60%);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid rgba(75, 85, 99, 0.7);
  box-shadow: var(--shadow-soft);
}

.info-box h3,
.info-card h3 {
  margin-top: 0;
}

.info-box ul,
.info-card ul {
  padding-left: 1.2rem;
  color: var(--text-muted);
}

/* Cards row */

.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem;
}

.downloads-list li + li {
  margin-top: 0.35rem;
}

.downloads-list a {
  color: var(--accent);
  text-decoration: none;
}

.downloads-list a:hover {
  text-decoration: underline;
}

/* Forms */

.contact-form,
.login-form {
  background: radial-gradient(circle at top, var(--accent-soft), #020617 60%);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--accent-strong);
  box-shadow: var(--shadow-soft);
}

.contact-form h3,
.login-form h2 {
  margin-top: 0;
}

.contact-form label,
.login-form label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.contact-form input,
.contact-form textarea,
.login-form input {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 0.65rem;
  border: 1px solid rgba(148, 163, 184, 0.75);
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-main);
  font-size: 0.95rem;
  margin-top: 0.25rem;
  margin-bottom: 0.8rem;
}

.contact-form input:focus,
.contact-form textarea:focus,
.login-form input:focus {
  outline: 1px solid var(--accent);
  border-color: var(--accent);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: none;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  background: linear-gradient(135deg, var(--accent), #4ade80);
  color: #022c22;
  cursor: pointer;
  transition: transform 120ms ease-out, box-shadow 120ms ease-out, filter 120ms ease-out;
  box-shadow: 0 12px 30px rgba(34, 197, 94, 0.4);
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
}

.form-note {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.form-error {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: #f97373;
}

/* Login layout */

.login-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.login-info h3 {
  margin-top: 0;
}

/* Footer */

.site-footer {
  border-top: 1px solid rgba(30, 64, 175, 0.7);
  padding: 1.2rem 0 1.8rem;
  background: linear-gradient(to top, #020617, rgba(2, 6, 23, 0.85));
  margin-top: 1.5rem;
}

.footer-inner {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Utilities */

.note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* Responsive */

@media (max-width: 880px) {
  .layout-two,
  .login-layout {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    height: auto;
    padding: 0.6rem 0 0.8rem;
  }

  .main-nav a {
    margin-left: 0;
    margin-right: 1.1rem;
    margin-top: 0.25rem;
  }
}

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

  .market-card-body canvas {
    height: 190px !important;
  }

.footer {
    background-color: #0b1220;
    color: #cbd5e1;
    padding: 70px 20px 30px;
    font-family: Arial, Helvetica, sans-serif;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-column h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 16px;
}

.footer-column p {
    line-height: 1.7;
    font-size: 14px;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-column ul li a:hover {
    color: #38bdf8;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    margin-top: 50px;
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: #94a3b8;
}

.footer-bottom .disclaimer {
    margin-top: 8px;
    font-size: 12px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 900px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
}