/* Basic reset */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: Vazirmatn, Tahoma, sans-serif;
  background: url("tina-bg.jpg") no-repeat center center fixed;
  background-size: cover;
  color: #f5f5f7;
  line-height: 1.8;
  direction: rtl;
}

a { color: #8fd0ff; text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 16px; }

/* Header & nav */
header.container {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px;
}
.brand .logo { font-weight: 800; font-size: 22px; color: #fff; }
#site-nav { display: flex; gap: 16px; }
#site-nav a { color: #cfd3dc; padding: 8px 10px; border-radius: 8px; }
#site-nav a:hover { background: rgba(255,255,255,0.06); }

.nav-toggle { display: none; font-size: 22px; background: transparent; border: 1px solid #3a3a3d; color: #fff; padding: 6px 10px; border-radius: 10px; }

/* Hero */
.hero { text-align: center; padding: 56px 0 24px; }
.hero h1 { font-size: 28px; margin-bottom: 12px; }
.hero p { color: #cfd3dc; margin-bottom: 16px; }

.btn { display: inline-block; padding: 10px 16px; border: 1px solid #3a3a3d; border-radius: 10px; color: #fff; }
.btn.primary { background: #3a86ff; border-color: #3a86ff; }
.btn + .btn { margin-right: 10px; }

/* Layout */
.grid.two { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.card { background: #151518; border: 1px solid #2a2a2d; padding: 16px; border-radius: 14px; }

.narrow { max-width: 800px; }

.footer { margin-top: 40px; border-top: 1px solid #2a2a2d; padding-top: 16px; color: #9aa2b1; }
.footer .sub { font-size: 12px; color: #7f8694; }

/* Timeline */
.timeline { list-style: none; margin-top: 12px; }
.timeline li { padding: 8px 0; border-bottom: 1px dashed #2a2a2d; }

/* Responsive */
@media (max-width: 860px) {
  .grid.two { grid-template-columns: 1fr; }
  #site-nav { display: none; flex-direction: column; background: #151518; padding: 12px; border: 1px solid #2a2a2d; border-radius: 14px; position: absolute; right: 16px; top: 60px; min-width: 220px; }
  #site-nav.open { display: flex; }
  .nav-toggle { display: inline-block; }
  header.container { position: relative; }
}