:root {
  --bg-dark: #0a0a0c;
  --bg-card: #131316;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --accent-color: #6366f1;
  --glass-border: rgba(255, 255, 255, 0.05);
  --font-main: 'Outfit', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
}

.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.glass-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(10px);
}

.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: var(--text-secondary); text-decoration: none; font-weight: 500; transition: 0.3s; }
.nav-links a.active { color: var(--text-primary); }

.nav-checkbox, .nav-toggle-btn { display: none; }

.btn-primary {
  background: var(--accent-color);
  color: white; border: none; padding: 0.6rem 1.2rem;
  border-radius: 8px; font-weight: 600; cursor: pointer;
}

/* Grids & Containers */
.section-header { margin: 2.5rem 0 1.5rem; }

.tradingview-chart-container {
  height: 600px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  overflow: hidden;
}

.responsive-widget {
  height: 550px;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  overflow: hidden;
}

.pulse-grid, .intelligence-grid, .etf-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.etf-grid { grid-template-columns: repeat(3, 1fr); }

.chart-example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.chart-example-img { width: 100%; border-radius: 12px; border: 1px solid var(--glass-border); }

.glass-footer { padding: 4rem 0; text-align: center; color: var(--text-secondary); border-top: 1px solid var(--glass-border); margin-top: 4rem; }

/* Mobile View (Below 768px) */
@media (max-width: 768px) {
  .app-container { padding: 0 1rem; }

  /* Hamburger Menu */
  .nav-toggle-btn {
    display: block; width: 25px; height: 18px; position: relative; cursor: pointer;
  }
  .nav-toggle-btn span, .nav-toggle-btn span::before, .nav-toggle-btn span::after {
    content: ''; position: absolute; width: 100%; height: 2px; background: white; transition: 0.3s;
  }
  .nav-toggle-btn span::before { top: -8px; }
  .nav-toggle-btn span::after { top: 8px; }

  .nav-links {
    position: fixed; top: 70px; left: -100%; width: 100%; height: auto;
    background: var(--bg-dark); flex-direction: column; padding: 2rem;
    transition: 0.4s; border-bottom: 1px solid var(--glass-border);
  }

  .nav-checkbox:checked ~ .nav-links { left: 0; }
  .user-actions { display: none; }

  /* Stacking Logic */
  .pulse-grid, .intelligence-grid, .etf-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tradingview-chart-container { height: 400px; }
  .responsive-widget { height: 450px; }
}