/*
  Arkhivio Backup Framework — Site stylesheet
  Light theme, shared across all pages.
*/

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

:root {
  --bg:       #ffffff;
  --surface:  #f6f8fa;
  --border:   #d0d7de;
  --text:     #1f2328;
  --muted:    #57606a;
  --accent:   #0969da;
  --accent2:  #6e40c9;
  --green:    #1a7f37;
  --orange:   #bc4c00;
  --red:      #cf222e;
  --radius:   8px;
  --font:     -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono:     "SFMono-Regular", Consolas, monospace;
}

body {
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── NAVBAR ── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.navbar-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; gap: 32px;
  padding: 8px 24px; min-height: 56px;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  font-weight: 700; font-size: 16px; color: var(--text);
  flex-shrink: 0;
}
.nav-brand img { height: 56px; width: auto; border-radius: 6px; }
.nav-links { display: flex; gap: 4px; align-items: center; flex: 1; }
.nav-links a {
  text-decoration: none; color: var(--muted);
  font-size: 14px; font-weight: 500;
  padding: 6px 12px; border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface); }

/* ── NAV DROPDOWN ── */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger {
  display: flex; align-items: center; gap: 4px;
  cursor: pointer; color: var(--muted);
  font-size: 14px; font-weight: 500;
  padding: 6px 12px; border-radius: 6px;
  transition: color .2s, background .2s; user-select: none;
}
.nav-dropdown-trigger::after { content: "▾"; font-size: 10px; }
.nav-dropdown:hover .nav-dropdown-trigger { color: var(--text); background: var(--surface); }
.nav-dropdown-menu {
  display: none;
  position: absolute; top: 100%; left: 0;
  padding-top: 8px; /* invisible bridge so hover doesn't break */
  z-index: 200;
}
.nav-dropdown-menu-inner {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); min-width: 200px;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
  padding: 6px 0;
}
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-menu a {
  display: block; padding: 8px 16px;
  text-decoration: none; font-size: 13px; color: var(--muted);
  transition: color .2s, background .2s; white-space: nowrap;
}
.nav-dropdown-menu a:hover { color: var(--accent); background: var(--surface); }
.nav-cta {
  margin-left: auto;
  background: var(--accent); color: #fff;
  text-decoration: none; font-size: 13px; font-weight: 600;
  padding: 7px 18px; border-radius: 6px;
  transition: background .2s; flex-shrink: 0;
}
.nav-cta:hover { background: #0550ae; }

/* ── FOOTER ── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 48px 24px;
  margin-top: 80px;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
}
.footer-brand { display: flex; flex-direction: column; gap: 10px; }
.footer-brand img { width: 100%; max-width: 280px; height: auto; border-radius: 6px; }
.footer-brand-name { font-weight: 700; font-size: 15px; color: var(--text); }
.footer-brand p { font-size: 13px; color: var(--muted); max-width: 240px; line-height: 1.6; }
.footer-col h4 { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
.footer-col a { display: block; text-decoration: none; color: var(--muted); font-size: 13px; margin-bottom: 7px; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: 1100px; margin: 32px auto 0;
  border-top: 1px solid var(--border); padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--muted);
}

/* ── UTILITIES ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 24px; }
.section-sm { padding: 56px 24px; }
.section-label {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--accent); margin-bottom: 12px;
}
h1 { font-size: 48px; font-weight: 800; line-height: 1.1; color: var(--text); }
h2 { font-size: 32px; font-weight: 700; line-height: 1.2; color: var(--text); }
h3 { font-size: 18px; font-weight: 600; color: var(--text); }
.lead { font-size: 18px; color: var(--muted); line-height: 1.7; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }

.btn {
  display: inline-block; text-decoration: none;
  padding: 10px 22px; border-radius: var(--radius);
  font-size: 14px; font-weight: 600; cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #0550ae; border-color: #0550ae; }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { background: var(--surface); border-color: #adb8c5; }
.btn-lg { padding: 13px 30px; font-size: 15px; }

.badge {
  display: inline-block; padding: 3px 10px;
  border-radius: 20px; font-size: 12px; font-weight: 600;
}
.badge-blue { background: #dbeafe; color: #0550ae; }
.badge-green { background: #dcfce7; color: #1a7f37; }
.badge-purple { background: #ede9fe; color: #5b21b6; }
.badge-orange { background: #fff0e0; color: #bc4c00; }

.card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: border-color .2s, box-shadow .2s;
}
.card:hover { border-color: #adb8c5; box-shadow: 0 2px 12px rgba(0,0,0,.06); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; }

.tag {
  display: inline-block; background: var(--surface);
  border: 1px solid var(--border); border-radius: 5px;
  font-size: 12px; font-family: var(--mono); padding: 2px 8px;
  color: var(--muted);
}

code {
  font-family: var(--mono); font-size: 13px;
  background: #e5e7eb; padding: 2px 7px; border-radius: 4px; color: #0550ae;
}

pre {
  background: #f6f8fa; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
  overflow-x: auto; color: var(--text);
}
pre .c-key  { color: #0550ae; }
pre .c-str  { color: #1a7f37; }
pre .c-num  { color: #bc4c00; }
pre .c-mut  { color: #8c959f; }
pre .c-grn  { color: #1a7f37; font-weight: 600; }

.divider { border: none; border-top: 1px solid var(--border); margin: 0; }

/* responsive */
@media (max-width: 768px) {
  h1 { font-size: 32px; }
  h2 { font-size: 24px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .nav-links { display: none; }
}