/* ============================================================
   GLOBAL.CSS — Reset, Typography, Layout, Header, Footer
   best-platform-to-sell-bitcoin-in-nigeria.com
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --bg:        #0C0E14;
  --surface:   #13161F;
  --surface-2: #1A1E2B;
  --border:    #232840;
  --border-2:  #2E3450;
  --text:      #E8ECF4;
  --muted:     #6B7590;
  --accent:    #F7931A;
  --accent-dk: #D4780F;
  --accent-2:  #4F8EF7;
  --green:     #10B981;
  --red:       #EF4444;
  --yellow:    #F59E0B;

  --max-width: 1100px;
  --radius:    10px;
  --radius-sm: 6px;

  --font-display: 'Outfit', 'Trebuchet MS', sans-serif;
  --font-body:    'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono:    'IBM Plex Mono', 'Courier New', monospace;
}

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

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  color: var(--accent);
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.site-header .container {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.site-logo__img {
  height: 36px;
  width: auto;
  display: block;
}

/* --- Nav --- */
.site-nav {
  display: none;
  flex-direction: column;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  gap: 0;
}

.site-nav.is-open {
  display: flex;
}

.site-nav a {
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s;
}

.site-nav a:last-child {
  border-bottom: none;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--accent);
}

/* --- Hamburger --- */
.nav-toggle {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Desktop nav --- */
@media (min-width: 768px) {
  .site-nav {
    display: flex;
    flex-direction: row;
    position: static;
    background: none;
    border: none;
    padding: 0;
    gap: 0.25rem;
    margin-left: auto;
  }

  .site-nav a {
    padding: 0.4rem 0.75rem;
    border-bottom: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
  }

  .site-nav a:hover,
  .site-nav a.active {
    background: var(--surface-2);
    color: var(--accent);
  }

  .nav-toggle {
    display: none;
  }
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 2.5rem 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.footer-nav a {
  color: var(--muted);
  transition: color 0.15s;
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-disclaimer {
  font-size: 0.8rem;
  line-height: 1.6;
  max-width: 720px;
}

@media (min-width: 768px) {
  .site-footer .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .footer-right {
    text-align: right;
    flex-shrink: 0;
  }
}

/* --- Utility --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}