/* Post-Quantum Connection Tester — mylesagnew.com
   Self-contained, CSP-clean (external stylesheet). Matches site design tokens. */

@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-v20-latin-regular.woff2') format('woff2');
  font-weight: 400; font-style: normal; font-display: optional;
}
@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-v20-latin-600.woff2') format('woff2');
  font-weight: 600; font-style: normal; font-display: optional;
}
@font-face {
  font-family: 'Playfair Display';
  src: url('fonts/playfair-display-v40-latin-700.woff2') format('woff2');
  font-weight: 700; font-style: normal; font-display: optional;
}

:root {
  --bg: #f3f3f7;
  --bg2: #ebebee;
  --bg3: #e4e4e4;
  --accent: #0066cc;
  --accent2: #1a7add;
  --text: #191a1f;
  --muted: #66656a;
  --border: rgba(1,1,8,0.1);
  --border-accent: rgba(0,102,204,0.3);
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;

  --ok: #0f8a4f;
  --ok-bg: rgba(15,138,79,0.08);
  --ok-border: rgba(15,138,79,0.35);
  --warn: #b26a00;
  --warn-bg: rgba(217,119,6,0.08);
  --warn-border: rgba(178,106,0,0.35);
  --neutral: #55555c;
  --neutral-bg: rgba(85,85,92,0.07);
  --neutral-border: rgba(85,85,92,0.3);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.7;
  font-size: 1rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

code {
  font-family: ui-monospace, 'SFMono-Regular', 'Cascadia Code', Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.08em 0.4em;
  border-radius: 4px;
  word-break: break-word;
}

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 0.6rem 1rem; z-index: 100;
}
.skip-link:focus { left: 0; }

/* NAV */
nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; flex-wrap: wrap;
  padding: 1rem 2rem;
  background: rgba(248,248,250,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.nav-logo {
  font-family: var(--serif); font-weight: 700; font-size: 1.05rem;
  letter-spacing: 0.05em; color: var(--text); text-decoration: none;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  list-style: none; display: flex; gap: 1.4rem; flex-wrap: wrap;
  margin: 0; padding: 0; align-items: center;
}
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 0.82rem;
  letter-spacing: 0.02em; transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a[aria-current="page"] { color: var(--accent); font-weight: 600; }

/* BUTTONS */
.btn-primary, .btn-outline {
  display: inline-block; text-decoration: none; cursor: pointer;
  font-family: var(--sans); font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.02em; padding: 0.7rem 1.3rem; border-radius: 6px;
  transition: background 0.2s, transform 0.15s, border-color 0.2s;
}
.btn-primary {
  background: var(--accent); color: #fff; border: 1px solid var(--accent);
}
.btn-primary:hover { background: var(--accent2); transform: translateY(-1px); }
.btn-outline {
  background: transparent; color: var(--accent);
  border: 1px solid var(--border-accent);
}
.btn-outline:hover { background: rgba(0,102,204,0.07); transform: translateY(-1px); }

/* HERO / TESTER */
.pqc-hero {
  max-width: 820px; margin: 0 auto; padding: 4rem 1.5rem 3rem; text-align: center;
}
.pqc-eyebrow {
  text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.7rem;
  font-weight: 600; color: var(--accent); margin: 0 0 1rem;
}
.pqc-hero h1 {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1;
  letter-spacing: -0.02em; margin: 0 0 1.2rem;
}
.pqc-lede {
  font-size: 1.02rem; color: var(--muted); max-width: 60ch;
  margin: 0 auto 2.5rem; line-height: 1.8;
}
.pqc-lede em { font-style: italic; color: var(--text); }

/* RESULT CARD */
.result-card {
  border: 1px solid var(--border); border-radius: 14px;
  background: #fff; padding: 2.4rem 2rem; text-align: center;
  transition: border-color 0.3s, background 0.3s, box-shadow 0.3s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}
.result-head { margin-bottom: 1.1rem; }

.status-pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; padding: 0.4rem 0.9rem; border-radius: 999px;
  border: 1px solid var(--neutral-border); color: var(--neutral);
  background: var(--neutral-bg);
}
.status-pill::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: currentColor; display: inline-block;
}

.verdict {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.1rem); line-height: 1.15;
  margin: 0 0 0.7rem; letter-spacing: -0.01em;
}
.verdict-sub {
  color: var(--muted); font-size: 0.95rem; margin: 0 auto 1.6rem; max-width: 52ch;
}

.kex-badge {
  display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.6rem;
  justify-content: center; margin: 0 auto 1.8rem;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.7rem 1.1rem;
}
.kex-label {
  font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--muted); font-weight: 600;
}
.kex-value {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  font-size: 0.95rem; font-weight: 600; color: var(--text);
}
.kex-tag {
  font-size: 0.64rem; font-weight: 700; letter-spacing: 0.08em;
  text-transform: uppercase; padding: 0.2rem 0.55rem; border-radius: 5px;
}

.result-actions {
  display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap;
}

/* Loading state */
.result-card.is-loading .status-pill { color: var(--neutral); }
.result-card.is-loading .status-pill::before { animation: pulse 1.1s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 0.3; } 50% { opacity: 1; } }

/* PASS state */
.result-card.is-pass {
  border-color: var(--ok-border);
  background: linear-gradient(180deg, var(--ok-bg), #fff 55%);
}
.result-card.is-pass .status-pill {
  color: var(--ok); border-color: var(--ok-border); background: var(--ok-bg);
}
.result-card.is-pass .verdict { color: #0c6b3d; }
.result-card.is-pass .kex-tag { background: var(--ok-bg); color: var(--ok); }

/* FAIL / classical state */
.result-card.is-fail {
  border-color: var(--warn-border);
  background: linear-gradient(180deg, var(--warn-bg), #fff 55%);
}
.result-card.is-fail .status-pill {
  color: var(--warn); border-color: var(--warn-border); background: var(--warn-bg);
}
.result-card.is-fail .verdict { color: #8a5200; }
.result-card.is-fail .kex-tag { background: var(--warn-bg); color: var(--warn); }

/* UNKNOWN state */
.result-card.is-unknown {
  border-color: var(--neutral-border);
  background: linear-gradient(180deg, var(--neutral-bg), #fff 55%);
}
.result-card.is-unknown .status-pill {
  color: var(--neutral); border-color: var(--neutral-border); background: var(--neutral-bg);
}
.result-card.is-unknown .verdict { color: var(--neutral); }

/* DETAILS */
.details {
  max-width: 820px; margin: 1.8rem auto 0; text-align: left;
  border: 1px solid var(--border); border-radius: 14px;
  background: #fff; padding: 1.8rem;
}
.details-title {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--muted); margin: 0 0 1.2rem; font-weight: 600;
}
.detail-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem 1.6rem; margin: 0;
}
.detail { border-top: 1px solid var(--border); padding-top: 0.8rem; }
.detail dt {
  font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); margin-bottom: 0.3rem;
}
.detail dd {
  margin: 0; font-size: 0.9rem; font-weight: 600; color: var(--text);
  font-family: ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  word-break: break-word;
}
.details-foot {
  margin: 1.4rem 0 0; font-size: 0.8rem; color: var(--muted); line-height: 1.7;
}

/* ENABLE */
.enable {
  max-width: 820px; margin: 1.4rem auto 0; text-align: left;
  border: 1px solid var(--warn-border); border-radius: 14px;
  background: var(--warn-bg); padding: 1.8rem;
}
.enable h3 { margin: 0 0 0.6rem; font-family: var(--serif); font-size: 1.15rem; }
.enable-intro { margin: 0 0 1rem; font-size: 0.9rem; color: var(--muted); }
.enable-list { margin: 0; padding-left: 1.2rem; }
.enable-list li { font-size: 0.88rem; margin-bottom: 0.7rem; line-height: 1.7; }

/* SECTIONS */
.section {
  max-width: 780px; margin: 0 auto; padding: 3.5rem 1.5rem;
}
.section-alt {
  max-width: none; background: var(--bg2);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.section-alt > * { max-width: 780px; margin-left: auto; margin-right: auto; }
.section-title {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 1.9rem); line-height: 1.2;
  margin: 0 0 1.2rem; letter-spacing: -0.01em;
}
.section-body {
  font-size: 0.96rem; color: #3a3a40; line-height: 1.85; margin: 0 0 1.1rem; max-width: 68ch;
}
.section-body em { color: var(--text); font-style: italic; }

.how-list { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.how-list li { font-size: 0.92rem; color: #3a3a40; margin-bottom: 0.7rem; line-height: 1.75; }

/* FAQ */
.faq { display: grid; gap: 0.8rem; }
.faq details {
  border: 1px solid var(--border); border-radius: 10px;
  background: #fff; padding: 0.2rem 1.1rem;
}
.faq summary {
  cursor: pointer; padding: 0.9rem 0; font-weight: 600; font-size: 0.95rem;
  list-style: none; position: relative; padding-right: 1.5rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; position: absolute; right: 0; top: 0.8rem;
  color: var(--accent); font-size: 1.2rem; line-height: 1; transition: transform 0.2s;
}
.faq details[open] summary::after { content: '\2212'; }
.faq details p {
  margin: 0 0 1rem; font-size: 0.9rem; color: var(--muted); line-height: 1.75;
}

/* CTA BAND */
.cta-band {
  text-align: center; padding: 3.5rem 1.5rem;
  border-top: 1px solid var(--border);
}
.cta-band p {
  font-family: var(--serif); font-size: 1.25rem; margin: 0 0 1.4rem; color: var(--text);
}
.cta-links { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }

/* FOOTER */
footer {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap;
  padding: 2rem; background: var(--bg2);
  border-top: 1px solid var(--border);
  font-size: 0.72rem; color: var(--muted); letter-spacing: 0.02em;
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--accent); }

/* MOTION */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}

/* RESPONSIVE */
@media (max-width: 640px) {
  nav { padding: 0.9rem 1.1rem; }
  .nav-links { gap: 0.9rem; }
  .result-card { padding: 1.8rem 1.2rem; }
  .pqc-hero { padding: 2.5rem 1.1rem 2rem; }
}