/* ============================================
   Chatmail Forge – Local Fonts & Mobile Style
   ============================================ */

/* ---------- Local Fonts ---------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./fonts/inter-400.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('./fonts/inter-600.ttf') format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('./fonts/inter-800.ttf') format('truetype');
}
@font-face {
  font-family: 'Fira Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('./fonts/firamono-400.ttf') format('truetype');
}

:root {
  --bg-body: #1a1e1e;
  --bg-surface: #1f2424;
  --bg-card: #232828;
  --bg-card-inner: #1c2222;
  --bg-hover: #2b3535;
  --bg-code: #191d1d;
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --text-muted: #8c9b9d;
  --accent: #e67e22;
  --accent-hover: #f0932e;
  --border: #2e3636;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 70px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; transition: all var(--transition); }
a:hover { color: var(--accent-hover); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(26, 30, 30, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  transition: transform var(--transition);
}
.nav-brand:hover { transform: scale(1.02); }

.nav-brand img { height: 36px; width: auto; }

/* Desktop Links */
.nav-links { display: flex; gap: 0.5rem; list-style: none; align-items: center; }
.nav-links a {
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition);
  display: flex;
  align-items: center;
}
.nav-links a:hover { color: var(--text-primary); background: rgba(255, 255, 255, 0.06); }

.nav-links a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  font-weight: 600;
}

.nav-cta { 
  background: var(--accent) !important; 
  color: var(--bg-body) !important; 
  font-weight: 700 !important;
  display: flex !important;
  align-items: center;
  gap: 6px;
}
.nav-cta:hover { 
  background: var(--accent-hover) !important; 
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none; border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 1.5rem;
}

/* ---------- Hero ---------- */
.hero { padding: 8rem 0 3rem; text-align: center; }
.hero h1 { font-size: clamp(2.5rem, 8vw, 4.5rem); font-weight: 800; color: #fff; line-height: 1.1; margin-bottom: 1.5rem; letter-spacing: -0.03em; }
.hero-subtitle { font-size: 1.25rem; color: var(--text-muted); max-width: 700px; margin: 0 auto; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2rem;
  transition: transform var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }
.card h3 { color: var(--accent); margin-bottom: 1rem; }

.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin: 3rem 0;
  padding: 3rem;
  background: var(--bg-card-inner);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}
.qr-container img { background: white; padding: 1.25rem; border-radius: 12px; }

.cta-button {
  display: inline-flex;
  background: var(--accent);
  color: var(--bg-body) !important;
  padding: 0.9rem 2.5rem;
  border-radius: 12px;
  font-weight: 700;
  transition: transform 0.2s, background-color 0.2s;
}
.cta-button:hover { background: var(--accent-hover); transform: translateY(-2px); }

/* ---------- Footer ---------- */
.footer { margin-top: 6rem; padding: 5rem 0 3rem; background: var(--bg-surface); border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 3rem; margin-bottom: 4rem; }
.footer-col h4 { color: #fff; margin-bottom: 1.5rem; text-transform: uppercase; font-size: 0.9rem; letter-spacing: 0.1em; }
.footer-col a { display: block; color: var(--text-muted); margin-bottom: 0.8rem; font-size: 0.95rem; }
.footer-bottom { text-align: center; border-top: 1px solid var(--border); padding-top: 2rem; color: var(--text-muted); font-size: 0.85rem; }

/* ---------- Mobile Styles ---------- */
@media (max-width: 850px) {
  .menu-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: var(--nav-height); left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-surface);
    padding: 1rem;
    gap: 0;
    border-bottom: 1px solid var(--border);
    display: none; /* Hidden by default */
  }
  .nav-links.active { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 1rem; width: 100%; border-radius: 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav-cta { margin-top: 0.5rem; border-radius: 8px !important; text-align: center; justify-content: center; }
  
  .hero { padding-top: 7rem; }
  .hero h1 { font-size: 2.8rem; }
}