/* ─────────────────────────────────────────────────────────────────────────────
   asecuritygeek.com — fresh security-focused theme
   Dark slate base · cyan/green "terminal" accent · clean editorial cards
   ───────────────────────────────────────────────────────────────────────────── */

:root {
  --bg:        #0b1120;   /* deep slate navy */
  --bg-2:      #111a2e;
  --surface:   #16213a;
  --surface-2: #1d2b47;
  --border:    #243657;
  --text:      #e6edf6;
  --muted:     #9fb0c9;
  --faint:     #6c7d99;
  --accent:    #22d3aa;   /* terminal teal-green */
  --accent-2:  #38bdf8;   /* sky cyan */
  --accent-ink:#062b22;
  --danger:    #f87171;
  --warn:      #fbbf24;
  --ok:        #34d399;
  --radius:    12px;
  --maxw:      1120px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  font-weight: 600;
  font-size: .95rem;
  padding: 11px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #2ee9bd; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 7px 14px; font-size: .85rem; }

/* ── Header ──────────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,17,32,.85);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.site-logo {
  font-family: var(--mono); font-weight: 700; font-size: 1.12rem;
  color: var(--text); text-decoration: none; letter-spacing: -.02em;
  display: inline-flex; align-items: center; gap: 8px;
}
.site-logo:hover { text-decoration: none; }
.site-logo span { color: var(--accent); }
.logo-mark {
  color: var(--accent); background: var(--surface);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 2px 7px; font-size: .9em;
}
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  color: var(--muted); font-size: .92rem; font-weight: 500;
  padding: 8px 11px; border-radius: 7px; text-decoration: none;
}
.site-nav a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.site-nav a.active { color: var(--accent); }
.site-nav a.nav-strong { color: var(--accent); border: 1px solid var(--border); }
.site-nav a.nav-strong:hover { border-color: var(--accent); }
.site-nav a.nav-search { font-size: 1rem; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  color: var(--text); font-size: 1.3rem; border-radius: 8px;
  width: 42px; height: 40px; cursor: pointer;
}

/* ── Hero (home) ─────────────────────────────────────────────────────────────── */
.hero {
  background:
    radial-gradient(900px 400px at 80% -10%, rgba(34,211,170,.10), transparent),
    radial-gradient(700px 400px at 0% 0%, rgba(56,189,248,.08), transparent),
    var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; padding: 72px 20px 64px; }
.hero .eyebrow {
  font-family: var(--mono); color: var(--accent); font-size: .82rem;
  letter-spacing: .08em; text-transform: uppercase; margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.08; margin: 0 0 18px;
  letter-spacing: -.02em; max-width: 18ch;
}
.hero p { font-size: 1.15rem; color: var(--muted); max-width: 62ch; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Sections ────────────────────────────────────────────────────────────────── */
.section { padding: 56px 0; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 26px; gap: 16px; flex-wrap: wrap;
}
.section-head h2 { font-size: 1.5rem; margin: 0; letter-spacing: -.01em; }
.section-head .link-all { color: var(--accent); font-size: .9rem; font-weight: 600; }
.lead { color: var(--muted); max-width: 65ch; }

/* ── Card grid ───────────────────────────────────────────────────────────────── */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color .15s ease, transform .1s ease;
  display: flex; flex-direction: column;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card-img-link { display: block; margin: -22px -22px 16px; }
.card-img {
  width: 100%; height: 170px; object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0; border-bottom: 1px solid var(--border);
}
.article-hero-img {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: var(--radius); border: 1px solid var(--border); margin: 0 0 4px;
}
.lesson-hero-img {
  width: 100%; max-height: 360px; object-fit: cover;
  border-radius: var(--radius); border: 1px solid var(--border); margin: 24px 0 0;
}
.page-hero-img {
  width: 100%; max-height: 380px; object-fit: cover;
  border-radius: var(--radius); border: 1px solid var(--border); margin: 0 0 24px;
}
.card .cat-tag {
  font-family: var(--mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--accent); margin-bottom: 10px;
}
.card h3 { font-size: 1.12rem; margin: 0 0 10px; line-height: 1.3; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--accent); text-decoration: none; }
.card p { color: var(--muted); font-size: .92rem; margin: 0 0 14px; }
.card .meta { margin-top: auto; color: var(--faint); font-size: .8rem; font-family: var(--mono); }

/* Topic tiles */
.topics { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.topic {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; text-decoration: none; color: var(--text);
  transition: border-color .15s, transform .1s;
}
.topic:hover { border-color: var(--accent); transform: translateY(-2px); text-decoration: none; }
.topic strong { display: block; margin-bottom: 6px; }
.topic span { color: var(--muted); font-size: .85rem; }

/* Feature strip */
.feature {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.feature .body { padding: 34px; }
.feature .cat-tag { font-family: var(--mono); color: var(--accent); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }
.feature h3 { font-size: 1.6rem; margin: 10px 0 14px; line-height: 1.2; }
.feature h3 a { color: var(--text); }
.feature .aside {
  background: linear-gradient(160deg, rgba(34,211,170,.12), rgba(56,189,248,.08)), var(--bg-2);
  display: flex; align-items: center; justify-content: center; padding: 30px;
  font-family: var(--mono); color: var(--accent); font-size: 3rem;
}

/* ── Article body ────────────────────────────────────────────────────────────── */
.article-head { background: var(--bg-2); border-bottom: 1px solid var(--border); }
.article-head .container { padding-top: 48px; padding-bottom: 40px; }
.article-head .cat-tag { font-family: var(--mono); color: var(--accent); text-transform: uppercase; font-size: .78rem; letter-spacing: .07em; }
.article-head h1 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); margin: 12px 0 14px; line-height: 1.12; letter-spacing: -.02em; max-width: 26ch; }
.article-meta { color: var(--faint); font-family: var(--mono); font-size: .82rem; }
.article-wrap { max-width: 760px; margin: 0 auto; padding: 44px 20px 10px; }
.prose { font-size: 1.06rem; }
.prose h2 { font-size: 1.5rem; margin: 2em 0 .6em; letter-spacing: -.01em; }
.prose h3 { font-size: 1.2rem; margin: 1.6em 0 .5em; }
.prose p { margin: 0 0 1.1em; }
.prose ul, .prose ol { margin: 0 0 1.2em; padding-left: 1.4em; }
.prose li { margin-bottom: .5em; }
.prose a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }
.prose img { border-radius: var(--radius); margin: 1.5em 0; border: 1px solid var(--border); }
.prose blockquote {
  border-left: 3px solid var(--accent); margin: 1.5em 0; padding: .4em 1.2em;
  color: var(--muted); background: var(--surface); border-radius: 0 8px 8px 0;
}
.prose code {
  font-family: var(--mono); background: var(--surface); padding: .15em .4em;
  border-radius: 5px; font-size: .9em; border: 1px solid var(--border);
}
.disclosure {
  font-size: .85rem; color: var(--faint); background: var(--surface);
  border: 1px dashed var(--border); border-radius: 8px; padding: 12px 16px; margin: 0 0 28px;
}

/* ── Training ─────────────────────────────────────────────────────────────────── */
.module { margin-bottom: 36px; }
.module > h3 {
  font-family: var(--mono); color: var(--accent); font-size: .85rem;
  text-transform: uppercase; letter-spacing: .07em; margin: 0 0 14px;
  border-bottom: 1px solid var(--border); padding-bottom: 8px;
}
.lesson-row {
  display: flex; gap: 16px; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px; margin-bottom: 12px;
  text-decoration: none; color: var(--text); transition: border-color .15s, transform .1s;
}
.lesson-row:hover { border-color: var(--accent); transform: translateX(3px); text-decoration: none; }
.lesson-num {
  font-family: var(--mono); color: var(--accent); font-weight: 700;
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 8px;
  min-width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
}
.lesson-row h4 { margin: 0 0 4px; font-size: 1.05rem; }
.lesson-row p { margin: 0; color: var(--muted); font-size: .9rem; }

/* ── Tool ─────────────────────────────────────────────────────────────────────── */
.tool-shell { max-width: 720px; margin: 0 auto; padding: 44px 20px; }
.tool-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
}
.tool-box label { display: block; font-weight: 600; margin-bottom: 8px; }
.tool-input {
  width: 100%; font-family: var(--mono); font-size: 1.05rem;
  padding: 14px 16px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--bg-2); color: var(--text);
}
.tool-input:focus { outline: none; border-color: var(--accent); }
.meter { height: 10px; border-radius: 6px; background: var(--bg-2); margin: 18px 0 10px; overflow: hidden; border: 1px solid var(--border); }
.meter > div { height: 100%; width: 0; transition: width .25s ease, background .25s ease; }
.tool-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-top: 18px; }
.tool-stat { background: var(--bg-2); border: 1px solid var(--border); border-radius: 9px; padding: 14px; text-align: center; }
.tool-stat b { display: block; font-family: var(--mono); font-size: 1.3rem; color: var(--accent); }
.tool-stat span { font-size: .78rem; color: var(--muted); }
.tool-feedback { margin-top: 16px; font-size: .92rem; color: var(--muted); min-height: 1.4em; }
.tool-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.tool-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.tool-card.soon { opacity: .6; }
.tool-card h3 { margin: 0 0 8px; font-size: 1.1rem; }
.tool-card .pill { font-family: var(--mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }

/* ── Inline newsletter (tool / lesson capture) ───────────────────────────────── */
.inline-cap {
  background: linear-gradient(160deg, rgba(34,211,170,.10), rgba(56,189,248,.06)), var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; margin: 32px 0; text-align: center;
}
.inline-cap h3 { margin: 0 0 8px; }
.inline-cap p { color: var(--muted); margin: 0 0 16px; }

/* ── Newsletter forms ────────────────────────────────────────────────────────── */
.sub-form { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-top: 8px; }
.sub-form input[type=email] {
  padding: 12px 16px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 1rem; width: 300px; max-width: 100%;
}
.sub-form input[type=email]:focus { outline: none; border-color: var(--accent); }
.sub-msg { margin-top: 12px; font-size: .9rem; min-height: 1.2em; }

/* ── CTA band ────────────────────────────────────────────────────────────────── */
.cta-band {
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(34,211,170,.10), transparent),
    var(--bg-2);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 54px 0; text-align: center;
}
.cta-band h2 { margin: 0 0 8px; font-size: 1.6rem; }
.cta-band p { color: var(--muted); margin: 0 auto; max-width: 52ch; }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
.site-footer { background: var(--bg-2); border-top: 1px solid var(--border); padding: 48px 0 0; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px 36px;
  display: grid; grid-template-columns: 1.3fr 2fr; gap: 40px;
}
.footer-brand .site-logo { margin-bottom: 12px; }
.footer-brand p { color: var(--muted); font-size: .9rem; max-width: 36ch; }
.footer-cols { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.footer-cols h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); margin: 0 0 12px; }
.footer-cols a { display: block; color: var(--muted); font-size: .9rem; padding: 4px 0; }
.footer-cols a:hover { color: var(--accent); text-decoration: none; }
.footer-copy { border-top: 1px solid var(--border); text-align: center; padding: 20px; color: var(--faint); font-size: .82rem; }

/* ── Pagination ──────────────────────────────────────────────────────────────── */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 36px; }
.pagination a, .pagination span {
  padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px;
  color: var(--muted); font-size: .9rem; text-decoration: none;
}
.pagination a:hover { border-color: var(--accent); color: var(--accent); }
.pagination .current { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }

/* ── Search ──────────────────────────────────────────────────────────────────── */
.search-form { display: flex; gap: 10px; margin: 24px 0 32px; }
.search-form input {
  flex: 1; padding: 13px 16px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 1rem;
}
.search-form input:focus { outline: none; border-color: var(--accent); }

/* ── 404 ─────────────────────────────────────────────────────────────────────── */
.error-page { text-align: center; padding: 90px 20px; }
.error-page .code { font-family: var(--mono); font-size: 4rem; color: var(--accent); margin: 0; }

/* ── Page (static) ───────────────────────────────────────────────────────────── */
.page-wrap { max-width: 760px; margin: 0 auto; padding: 44px 20px; }
.page-wrap h1 { font-size: 2.2rem; margin: 0 0 24px; letter-spacing: -.02em; }

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .topics { grid-template-columns: repeat(2, 1fr); }
  .feature { grid-template-columns: 1fr; }
  .feature .aside { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 680px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px; display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 10px; border-radius: 8px; }
  .grid-3, .grid-2, .topics, .tool-grid, .tool-stats { grid-template-columns: 1fr; }
  .tool-stats { grid-template-columns: repeat(3,1fr); }
}