/* ==========================================================================
   Global Styles & Dark Theme
   Cryptocurrency Trading Platform
   ========================================================================== */

/* --- CSS Variables --- */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent-primary: #58a6ff;
  --accent-green: #3fb950;
  --accent-red: #f85149;
  --accent-yellow: #d29922;
  --accent-purple: #bc8cff;
  --signal-buy-bg: rgba(63, 185, 80, 0.1);
  --signal-sell-bg: rgba(248, 81, 73, 0.1);
  --signal-hold-bg: rgba(210, 153, 34, 0.1);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 8px;
  --gap: 16px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

ul, ol {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

img, svg {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* --- Body --- */
body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 0.5em;
}

small {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

code, .mono {
  font-family: var(--font-mono);
}

.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-yellow { color: var(--accent-yellow); }
.text-blue { color: var(--accent-primary); }
.text-purple { color: var(--accent-purple); }
.text-muted { color: var(--text-secondary); }

/* --- Navbar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: rgba(22, 27, 34, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  white-space: nowrap;
}

.navbar-logo img,
.navbar-logo svg {
  width: 28px;
  height: 28px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-links a,
.navbar-links .nav-link {
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background-color 0.2s;
  cursor: pointer;
}

.navbar-links a:hover,
.navbar-links .nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

.navbar-links a.active,
.navbar-links .nav-link.active {
  color: var(--accent-primary);
  background-color: rgba(88, 166, 255, 0.1);
}

.navbar-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* --- Disclaimer Banner --- */
.disclaimer-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  background-color: rgba(210, 153, 34, 0.12);
  border-bottom: 1px solid rgba(210, 153, 34, 0.25);
  font-size: 0.82rem;
  color: var(--accent-yellow);
  line-height: 1.4;
}

.disclaimer-banner .disclaimer-icon {
  flex-shrink: 0;
  font-size: 1.1rem;
}

.disclaimer-banner .disclaimer-close {
  margin-left: auto;
  flex-shrink: 0;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  color: var(--accent-yellow);
  transition: background-color 0.2s;
}

.disclaimer-banner .disclaimer-close:hover {
  background-color: rgba(210, 153, 34, 0.2);
}

/* --- Price Ticker --- */
.price-ticker {
  overflow: hidden;
  white-space: nowrap;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 0;
  position: relative;
}

.price-ticker::before,
.price-ticker::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  z-index: 2;
  pointer-events: none;
}

.price-ticker::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.price-ticker::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.ticker-track {
  display: inline-flex;
  gap: 32px;
  animation: ticker-scroll 40s linear infinite;
}

.ticker-track:hover {
  animation-play-state: paused;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.ticker-item .ticker-symbol {
  font-weight: 600;
  color: var(--text-primary);
}

.ticker-item .ticker-price {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.ticker-item .ticker-change {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 2px 6px;
  border-radius: 4px;
}

.ticker-item .ticker-change.up {
  color: var(--accent-green);
  background-color: var(--signal-buy-bg);
}

.ticker-item .ticker-change.down {
  color: var(--accent-red);
  background-color: var(--signal-sell-bg);
}

/* --- Sections --- */
.section {
  display: none;
  padding: 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.section.active {
  display: block;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Card Base --- */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: var(--gap);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.card:hover {
  border-color: #484f58;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.card-header h3,
.card-header h4 {
  font-size: 0.95rem;
  font-weight: 600;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.1s;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  user-select: none;
}

.btn:hover {
  background-color: #2d333b;
  border-color: #484f58;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #ffffff;
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background-color: #79b8ff;
  border-color: #79b8ff;
}

.btn-success {
  background-color: var(--accent-green);
  color: #ffffff;
  border-color: var(--accent-green);
}

.btn-success:hover {
  background-color: #56d364;
  border-color: #56d364;
}

.btn-danger {
  background-color: var(--accent-red);
  color: #ffffff;
  border-color: var(--accent-red);
}

.btn-danger:hover {
  background-color: #ff6e6a;
  border-color: #ff6e6a;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.8rem;
  border-radius: 6px;
}

.btn-icon {
  padding: 6px;
  border-radius: 6px;
}

/* --- Footer --- */
.footer {
  padding: 20px 24px;
  margin-top: 40px;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
}

.footer a {
  color: var(--accent-primary);
  transition: color 0.2s;
}

.footer a:hover {
  color: #79b8ff;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 8px;
}

/* --- Utility --- */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: 8px; }
.gap-md { gap: var(--gap); }
.gap-lg { gap: 24px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #484f58;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .section {
    padding: 16px;
  }

  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.3rem; }
}

@media (max-width: 768px) {
  .navbar {
    padding: 0 16px;
    height: 50px;
  }

  .navbar-links {
    display: none;
  }

  .navbar-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 50px;
    left: 0;
    right: 0;
    background: rgba(22, 27, 34, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    gap: 4px;
  }

  .navbar-links.open a,
  .navbar-links.open .nav-link {
    padding: 10px 14px;
    width: 100%;
  }

  .section {
    padding: 12px;
  }

  .disclaimer-banner {
    padding: 8px 16px;
    font-size: 0.75rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 8px;
  }

  h1 { font-size: 1.4rem; }
  h2 { font-size: 1.15rem; }
  h3 { font-size: 1.05rem; }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .section {
    padding: 10px;
  }

  .card {
    padding: 12px;
  }

  .btn {
    padding: 6px 12px;
    font-size: 0.82rem;
  }
}