/* ============================================================
   esignmypdf.com — shared stylesheet
   Aligned with the EuKosmos visual language: dark, technical,
   cyan-accented, principled. Used across landing, guides, and
   legal pages. The /sign tool has its own inline styles which
   stay as they are.
   ============================================================ */

/* ── Design tokens ───────────────────────────────────────── */
:root{
  /* Surfaces (darkest → lightest) */
  --bg:        #05080f;
  --surface:   #11131f;
  --surface-2: #1c1e2e;
  --surface-3: #252740;
  --border:    #2a2d4a;
  --border-soft: #1f2238;

  /* Text */
  --text:     #dde1f0;
  --text-2:   #9ba3c0;
  --text-dim: #565e7a;

  /* Accents */
  --accent:        #33d9ff;            /* cyan — same as tool */
  --accent-glow:   #33d9ff33;
  --accent-warm:   #ffb86b;            /* EuKosmos card */
  --accent-warm-glow: #ffb86b22;
  --danger:        #ff5d6b;
  --ok:            #4ade80;

  /* Type */
  --font-body:    "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  /* Layout */
  --max:    1180px;
  --max-narrow: 760px;
  --nav-h:  60px;
}

/* ── Reset ──────────────────────────────────────────────── */
*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0 }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100% }
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
  font-size:16px;
  font-weight:400;
  letter-spacing:-0.005em;
  min-height:100vh;
  /* subtle grid texture + radial glow that fades */
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(51,217,255,0.06), transparent 60%),
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
  background-attachment: fixed, fixed, fixed;
}
img,svg{ display:block; max-width:100% }
a{ color:var(--accent); text-decoration:none; transition:opacity .15s }
a:hover{ opacity:.78 }
button{ font:inherit; color:inherit; background:none; border:none; cursor:pointer }
::selection{ background:var(--accent-glow); color:#fff }

/* ── Typography ─────────────────────────────────────────── */
h1,h2,h3,h4{ font-weight:700; letter-spacing:-0.025em; line-height:1.15; color:#fff }
h1{ font-size:clamp(2.4rem, 5.2vw, 4rem); font-weight:800; letter-spacing:-0.035em }
h2{ font-size:clamp(1.7rem, 3vw, 2.2rem); letter-spacing:-0.028em }
h3{ font-size:1.2rem; letter-spacing:-0.02em }
h4{ font-size:1rem }
p{ color:var(--text); }
.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  text-transform:uppercase;
  letter-spacing:.18em;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:.6em;
}
.eyebrow::before{
  content:"";
  width:18px;height:1px;background:var(--accent);
  display:inline-block;
}
.mono{ font-family:var(--font-mono) }
.dim { color:var(--text-2) }
em{ font-style:italic; color:#fff }

/* ── Container ──────────────────────────────────────────── */
.container{
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding-inline:24px;
}
.container-narrow{ max-width:var(--max-narrow); margin-inline:auto; padding-inline:24px }

/* ── Top nav (used on all pages except /sign which has its own) ── */
.site-nav{
  position:sticky; top:0; z-index:100;
  height:var(--nav-h);
  background:rgba(5,8,15,0.78);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border-soft);
}
.site-nav .container{
  height:100%;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.brand{
  display:flex; align-items:center; gap:9px;
  font-weight:700; font-size:1.02rem; color:#fff;
  letter-spacing:-0.02em;
}
.brand-mark{
  width:26px; height:26px; border-radius:7px;
  background:linear-gradient(135deg, var(--accent) 0%, #1e9fc7 100%);
  display:grid; place-items:center;
  font-family:var(--font-mono); font-weight:700; font-size:.78rem;
  color:#05080f;
  box-shadow:0 0 18px var(--accent-glow);
}
.nav-links{
  display:flex; gap:6px; align-items:center;
  font-size:.92rem;
}
.nav-links a{
  color:var(--text-2);
  padding:7px 12px; border-radius:var(--r-sm);
  transition:background .15s, color .15s;
}
.nav-links a:hover{ color:#fff; background:var(--surface); opacity:1 }
.nav-links .cta{
  background:var(--accent); color:#05080f; font-weight:600;
  padding:8px 14px;
}
.nav-links .cta:hover{ background:#5ce2ff; color:#05080f }

@media (max-width:640px){
  .nav-links a:not(.cta){ display:none }
}

/* ── Buttons ────────────────────────────────────────────── */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:13px 22px;
  font-size:.95rem; font-weight:600;
  border-radius:var(--r-md);
  transition:transform .12s ease, box-shadow .2s ease, background .15s;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent); color:#05080f;
  box-shadow:0 8px 28px var(--accent-glow);
}
.btn-primary:hover{ background:#5ce2ff; transform:translateY(-1px); box-shadow:0 12px 36px var(--accent-glow); opacity:1 }
.btn-ghost{
  background:transparent; color:var(--text);
  border:1px solid var(--border);
}
.btn-ghost:hover{ background:var(--surface); opacity:1 }
.btn-lg{ padding:16px 28px; font-size:1.02rem }

/* ── Cards ──────────────────────────────────────────────── */
.card{
  background:var(--surface);
  border:1px solid var(--border-soft);
  border-radius:var(--r-lg);
  padding:24px;
}
.card-glow:hover{
  border-color:var(--accent);
  box-shadow:0 0 0 1px var(--accent-glow);
}

/* ── EuKosmos card variant (warm accent, distinct from cyan) ── */
.eukosmos-card{
  background:linear-gradient(180deg, rgba(255,184,107,0.04) 0%, transparent 100%), var(--surface);
  border:1px solid rgba(255,184,107,0.25);
  border-radius:var(--r-lg);
  padding:26px;
  position:relative;
  overflow:hidden;
}
.eukosmos-card::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--accent-warm), transparent);
  opacity:.5;
}
.eukosmos-card .ek-label{
  font-family:var(--font-mono);
  font-size:.68rem;
  text-transform:uppercase;
  letter-spacing:.2em;
  color:var(--accent-warm);
  margin-bottom:14px;
}
.eukosmos-card h3{
  color:#fff;
  font-size:1.32rem;
  margin-bottom:10px;
  letter-spacing:-0.025em;
}
.eukosmos-card p{
  color:var(--text-2);
  font-size:.92rem;
  margin-bottom:18px;
}
.eukosmos-card .ek-link{
  display:inline-flex; align-items:center; gap:6px;
  color:var(--accent-warm);
  font-weight:600; font-size:.9rem;
  padding:8px 14px;
  border:1px solid rgba(255,184,107,0.4);
  border-radius:var(--r-sm);
  transition:background .15s;
}
.eukosmos-card .ek-link:hover{
  background:rgba(255,184,107,0.08);
  opacity:1;
}

/* ── Footer ─────────────────────────────────────────────── */
.site-footer{
  margin-top:96px;
  padding:48px 0 32px;
  border-top:1px solid var(--border-soft);
  background:rgba(0,0,0,0.25);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-grid h4{
  font-size:.72rem; font-family:var(--font-mono);
  text-transform:uppercase; letter-spacing:.18em;
  color:var(--text-dim); font-weight:500;
  margin-bottom:14px;
}
.footer-grid ul{ list-style:none; display:flex; flex-direction:column; gap:8px }
.footer-grid a{ color:var(--text-2); font-size:.92rem }
.footer-grid a:hover{ color:#fff; opacity:1 }
.footer-brand{ font-size:.92rem; color:var(--text-2); line-height:1.6 }
.footer-brand strong{ color:#fff }
.footer-meta{
  margin-top:32px; padding-top:24px;
  border-top:1px solid var(--border-soft);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
  font-size:.82rem; color:var(--text-dim);
}
@media (max-width:780px){
  .footer-grid{ grid-template-columns:1fr 1fr; gap:32px }
}
@media (max-width:480px){
  .footer-grid{ grid-template-columns:1fr }
}

/* ── Ad slot (placeholder until AdSense is live) ───────── */
.ad-slot{
  display:block;
  background:#f5f5f7;
  border-radius:var(--r-md);
  padding:24px;
  text-align:center;
  color:#555;
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.05em;
  position:relative;
  min-height:120px;
  display:grid; place-items:center;
}
.ad-slot::before{
  content:"Advertisement";
  position:absolute; top:8px; left:12px;
  font-size:.6rem; text-transform:uppercase; letter-spacing:.18em;
  color:#888;
}
.ad-slot .ad-note{ color:#666; font-size:.78rem }

/* Sticky mobile-only bottom ad */
.ad-sticky-mobile{
  display:none;
  position:fixed; left:0; right:0; bottom:0;
  z-index:90;
  background:#f5f5f7;
  border-top:1px solid #ddd;
  padding:8px 12px;
  text-align:center;
  font-family:var(--font-mono);
  font-size:.7rem;
  color:#666;
  min-height:60px;
  display:none;
  align-items:center; justify-content:center;
}
.ad-sticky-mobile .close{
  position:absolute; top:4px; right:8px;
  background:none; border:none; color:#888;
  font-size:1rem; cursor:pointer; padding:2px 6px;
}
@media (max-width:780px){
  .ad-sticky-mobile{ display:flex }
  body{ padding-bottom:70px } /* reserve space so sticky ad doesn't cover content */
}

/* ── Section primitive ─────────────────────────────────── */
.section{ padding:72px 0 }
.section-sm{ padding:48px 0 }

/* ── Prose (used in guides & legal pages) ──────────────── */
.prose{ max-width:680px; margin-inline:auto }
.prose > * + *{ margin-top:1.1em }
.prose h2{ margin-top:2.4em; padding-bottom:.4em; border-bottom:1px solid var(--border-soft) }
.prose h3{ margin-top:1.8em; color:#fff }
.prose p{ color:var(--text); font-size:1.04rem; line-height:1.72 }
.prose ul,.prose ol{ padding-left:1.4em; color:var(--text) }
.prose li{ margin:.4em 0 }
.prose strong{ color:#fff; font-weight:600 }
.prose code{
  font-family:var(--font-mono); font-size:.88em;
  background:var(--surface); padding:2px 6px; border-radius:4px;
  border:1px solid var(--border-soft);
}
.prose blockquote{
  border-left:3px solid var(--accent);
  padding:8px 0 8px 20px;
  color:var(--text-2);
  font-style:italic;
}
.prose .callout{
  background:var(--surface);
  border:1px solid var(--border-soft);
  border-left:3px solid var(--accent);
  border-radius:var(--r-md);
  padding:16px 20px;
  margin:1.4em 0;
  color:var(--text);
  font-size:.96rem;
}
.prose .callout strong{ color:var(--accent) }
.prose table{
  width:100%;
  border-collapse:collapse;
  margin:1.6em 0;
  font-size:.92rem;
  background:var(--surface);
  border-radius:var(--r-md);
  overflow:hidden;
}
.prose th, .prose td{
  text-align:left;
  padding:10px 14px;
  border-bottom:1px solid var(--border-soft);
  vertical-align:top;
}
.prose th{
  background:var(--surface-2);
  color:#fff;
  font-weight:600;
  font-size:.84rem;
  letter-spacing:.01em;
}
.prose tbody tr:last-child td{ border-bottom:none }
.prose tbody tr:hover{ background:rgba(255,255,255,0.02) }
.prose td code{ font-size:.84em }