/* ============================================================
   PKIPlayground – Landing v2 (preview) — /preview/landing
   Palette follows landing.css (accent #2563eb); dark hero + protocols band.
   ============================================================ */

.lv2 {
    --lv-bg:      #ffffff;
    --lv-tint:    #f6f8fc;
    --lv-border:  #e3e8f0;
    --lv-text:    #0b1324;
    --lv-muted:   #5b6678;
    --lv-accent:  #2563eb;
    --lv-accent2: #1d4ed8;
    --lv-cyan:    #06b6d4;
    --lv-violet:  #7c3aed;
    --lv-dark:    #0a1020;
    --lv-dark2:   #111a30;
    --lv-radius:  1rem;
    --lv-shadow:  0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
    background: var(--lv-bg);
    color: var(--lv-text);
    font-family: 'Inter Variable', 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
html { scroll-behavior: smooth; scroll-padding-top: 4.5rem; }
.lv2 a { text-decoration: none; }

/* ── Nav ─────────────────────────────────────────────────── */
.lv2-nav {
    position: fixed; inset: 0 0 auto 0; z-index: 1030;
    padding: .7rem 0;
    background: rgba(10, 16, 32, .55);
    backdrop-filter: saturate(140%) blur(12px);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, .06);
    transition: background .25s, box-shadow .25s;
}
.lv2-nav.scrolled { background: rgba(10, 16, 32, .92); box-shadow: 0 6px 24px rgba(0, 0, 0, .25); }
.lv2-brand { display: inline-flex; align-items: center; gap: .5rem; font-weight: 800; font-size: 1.25rem; color: #fff; letter-spacing: -.02em; }
.lv2-brand i { color: #60a5fa; font-size: 1.35rem; }
.lv2-brand b { color: #60a5fa; font-weight: 800; }
.lv2-links { gap: 1.6rem; }
.lv2-links a { color: rgba(255, 255, 255, .72); font-size: .92rem; font-weight: 500; transition: color .15s; }
.lv2-links a:hover { color: #fff; }
.lv2-lang {
    color: rgba(255, 255, 255, .8); font-size: .78rem; font-weight: 700; letter-spacing: .04em;
    border: 1px solid rgba(255, 255, 255, .2); border-radius: .5rem; padding: .3rem .55rem;
}
.lv2-lang:hover { color: #fff; border-color: rgba(255, 255, 255, .45); }
.lv2-mobile-links { display: flex; flex-direction: column; padding: .75rem 0 .25rem; }
.lv2-mobile-links a { color: rgba(255, 255, 255, .85); padding: .55rem 0; border-top: 1px solid rgba(255, 255, 255, .07); }

/* ── Buttons ─────────────────────────────────────────────── */
.lv2 .btn { border-radius: .65rem; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; }
.lv2-btn-primary { background: linear-gradient(135deg, #3b82f6, var(--lv-accent2)); color: #fff; border: 0; box-shadow: 0 6px 18px rgba(37, 99, 235, .35); }
.lv2-btn-primary:hover { color: #fff; filter: brightness(1.08); box-shadow: 0 8px 24px rgba(37, 99, 235, .45); }
.lv2-btn-ghost { color: #fff; border: 1px solid rgba(255, 255, 255, .25); background: transparent; }
.lv2-btn-ghost:hover { color: #fff; border-color: rgba(255, 255, 255, .5); background: rgba(255, 255, 255, .06); }
.lv2-btn-outline { color: #e2e8f0; border: 1px solid rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .04); }
.lv2-btn-outline:hover { color: #fff; border-color: rgba(255, 255, 255, .55); background: rgba(255, 255, 255, .08); }
.lv2-btn-light { background: #fff; color: var(--lv-accent2); border: 0; }
.lv2-btn-light:hover { background: #eef4ff; color: var(--lv-accent2); }
.lv2-btn-outline-light { color: #fff; border: 1px solid rgba(255, 255, 255, .55); background: transparent; }
.lv2-btn-outline-light:hover { color: #fff; background: rgba(255, 255, 255, .1); }
.lv2 .btn-lg { padding: .75rem 1.35rem; font-size: 1rem; }

/* ── Hero ────────────────────────────────────────────────── */
.lv2-hero {
    position: relative; overflow: hidden;
    padding: 8.5rem 0 5.5rem;
    color: #e5ecf7;
    background:
        radial-gradient(60rem 30rem at 85% -10%, rgba(37, 99, 235, .35), transparent 60%),
        radial-gradient(40rem 26rem at -10% 110%, rgba(124, 58, 237, .25), transparent 60%),
        linear-gradient(180deg, #0a1020 0%, #0d1530 100%);
}
.lv2-hero-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
}
.lv2-badge {
    display: inline-flex; align-items: center; gap: .5rem;
    font-size: .82rem; font-weight: 600; color: #bfdbfe;
    background: rgba(59, 130, 246, .14); border: 1px solid rgba(96, 165, 250, .3);
    padding: .4rem .85rem; border-radius: 999px; margin-bottom: 1.4rem;
}
.lv2-h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); font-weight: 800; line-height: 1.07; letter-spacing: -.035em; color: #fff; margin-bottom: 1.25rem; }
.lv2-grad { background: linear-gradient(90deg, #60a5fa, #22d3ee 55%, #a78bfa); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lv2-lead { font-size: 1.12rem; line-height: 1.65; color: #b6c2d6; margin-bottom: 1.8rem; max-width: 36rem; }
.lv2-checks { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem 1.4rem; }
.lv2-checks li { display: flex; align-items: center; gap: .45rem; font-size: .92rem; color: #cbd5e1; }
.lv2-checks i { color: #34d399; }
.lv2-checks-col { flex-direction: column; gap: .7rem; }
.lv2-checks-col li { color: var(--lv-text); font-size: 1rem; align-items: flex-start; }
.lv2-checks-col i { color: #10b981; margin-top: .15rem; }

/* Hero mock window */
.lv2-mock {
    border-radius: 1.1rem; overflow: hidden;
    background: rgba(17, 26, 48, .85);
    border: 1px solid rgba(255, 255, 255, .1);
    box-shadow: 0 30px 80px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.lv2-mock-bar { display: flex; align-items: center; gap: .4rem; padding: .7rem .9rem; border-bottom: 1px solid rgba(255, 255, 255, .07); background: rgba(255, 255, 255, .03); }
.lv2-mock-bar span { width: .65rem; height: .65rem; border-radius: 50%; background: #334155; }
.lv2-mock-bar span:nth-child(1) { background: #f87171; } .lv2-mock-bar span:nth-child(2) { background: #fbbf24; } .lv2-mock-bar span:nth-child(3) { background: #34d399; }
.lv2-mock-bar em { font-style: normal; font-size: .8rem; color: #94a3b8; margin-left: .6rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.lv2-mock-body { display: grid; grid-template-columns: 1.35fr 1fr; gap: 1rem; padding: 1.25rem; }
.lv2-tree { position: relative; display: flex; flex-direction: column; gap: .7rem; }
.lv2-tree::before { content: ''; position: absolute; left: 1.15rem; top: 1.5rem; bottom: 1.5rem; width: 2px; background: linear-gradient(#3b82f6, #a78bfa); opacity: .5; }
.lv2-node { position: relative; display: flex; align-items: center; gap: .7rem; padding: .65rem .8rem; border-radius: .75rem; background: rgba(255, 255, 255, .04); border: 1px solid rgba(255, 255, 255, .08); }
.lv2-node i { width: 2rem; height: 2rem; flex: none; display: grid; place-items: center; border-radius: .55rem; font-size: 1rem; color: #fff; z-index: 1; }
.lv2-node b { display: block; color: #f1f5f9; font-size: .88rem; }
.lv2-node small { color: #94a3b8; font-size: .74rem; }
.lv2-node-root i { background: linear-gradient(135deg, #2563eb, #1e40af); }
.lv2-node-sub  { margin-left: 1rem; } .lv2-node-sub i { background: linear-gradient(135deg, #0891b2, #0e7490); }
.lv2-node-iss  { margin-left: 2rem; } .lv2-node-iss i { background: linear-gradient(135deg, #7c3aed, #5b21b6); }
.lv2-node-ee   { margin-left: 3rem; } .lv2-node-ee i { background: linear-gradient(135deg, #059669, #047857); }
.lv2-svc { border-radius: .75rem; background: rgba(255, 255, 255, .03); border: 1px solid rgba(255, 255, 255, .07); padding: .75rem .85rem; }
.lv2-svc-title { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: #94a3b8; margin-bottom: .5rem; font-weight: 700; }
.lv2-svc-row { display: flex; align-items: center; gap: .5rem; padding: .3rem 0; font-size: .82rem; color: #e2e8f0; border-top: 1px dashed rgba(255, 255, 255, .06); }
.lv2-svc-row:first-of-type { border-top: 0; }
.lv2-svc-row em { margin-left: auto; font-style: normal; color: #6ee7b7; font-size: .72rem; }
.lv2-dot { width: .5rem; height: .5rem; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 3px rgba(52, 211, 153, .18); animation: lv2pulse 2.4s infinite; }
@keyframes lv2pulse { 50% { box-shadow: 0 0 0 6px rgba(52, 211, 153, .05); } }

/* ── Sections ────────────────────────────────────────────── */
.lv2-section { padding: 5.5rem 0; }
.lv2-tint { background: var(--lv-tint); }
.lv2-head { max-width: 46rem; margin: 0 auto 2.75rem; text-align: center; }
.lv2-eyebrow { display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--lv-accent); margin-bottom: .7rem; }
.lv2-h2 { font-size: clamp(1.75rem, 3.2vw, 2.45rem); font-weight: 800; letter-spacing: -.03em; line-height: 1.15; margin-bottom: .9rem; }
.lv2-h2-sm { font-size: clamp(1.45rem, 2.4vw, 1.85rem); }
.lv2-h3 { font-size: 1.08rem; font-weight: 700; letter-spacing: -.01em; margin-bottom: .45rem; }
.lv2-sub { font-size: 1.06rem; color: var(--lv-muted); line-height: 1.65; margin: 0; }

.lv2-card { background: #fff; border: 1px solid var(--lv-border); border-radius: var(--lv-radius); padding: 1.5rem; box-shadow: var(--lv-shadow); }
.lv2-card p { color: var(--lv-muted); margin: 0; font-size: .95rem; line-height: 1.6; }
.lv2-card-hover { transition: transform .2s, box-shadow .2s, border-color .2s; }
.lv2-card-hover:hover { transform: translateY(-3px); border-color: #c7d6f5; box-shadow: 0 14px 34px rgba(37, 99, 235, .1); }
.lv2-ico { width: 2.75rem; height: 2.75rem; display: grid; place-items: center; border-radius: .8rem; margin-bottom: 1rem; font-size: 1.25rem; color: var(--lv-accent); background: linear-gradient(135deg, #eff6ff, #e0e7ff); }

.lv2-audience { padding-top: 4rem; padding-bottom: 3rem; }

/* Protocols (dark band) */
.lv2-dark { background: linear-gradient(180deg, #0b1226, #0d1630); color: #e2e8f0; }
.lv2-dark .lv2-h2, .lv2-dark .lv2-h3 { color: #fff; }
.lv2-dark .lv2-sub { color: #9fb0c8; }
.lv2-dark .lv2-eyebrow { color: #60a5fa; }
.lv2-proto { border-radius: var(--lv-radius); padding: 1.35rem 1.4rem; background: rgba(255, 255, 255, .035); border: 1px solid rgba(255, 255, 255, .08); transition: border-color .2s, background .2s; }
.lv2-proto:hover { border-color: rgba(96, 165, 250, .45); background: rgba(59, 130, 246, .07); }
.lv2-proto-name { font-size: 1.3rem; font-weight: 800; letter-spacing: -.01em; background: linear-gradient(90deg, #93c5fd, #67e8f9); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lv2-proto-rfc { font-size: .72rem; color: #94a3b8; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; border: 1px solid rgba(255, 255, 255, .12); padding: .1rem .45rem; border-radius: .4rem; white-space: nowrap; }
.lv2-proto p { color: #aab8cc; font-size: .93rem; line-height: 1.6; margin: 0; }
.lv2-tools-title { font-size: 1.15rem; margin-bottom: 1.1rem; color: #fff; }
.lv2-tool { border-radius: var(--lv-radius); padding: 1.25rem; background: linear-gradient(160deg, rgba(37, 99, 235, .16), rgba(124, 58, 237, .1)); border: 1px solid rgba(147, 197, 253, .18); }
.lv2-tool i { font-size: 1.35rem; color: #93c5fd; display: block; margin-bottom: .6rem; }
.lv2-tool b { display: block; color: #fff; margin-bottom: .35rem; }
.lv2-tool p { color: #b4c2d8; font-size: .9rem; line-height: 1.55; margin: 0; }

/* Utilities grid */
.lv2-utils { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; }   /* 11 tiles → 4 + 4 + 3 */
@media (max-width: 1199.98px) { .lv2-utils { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 767.98px)  { .lv2-utils { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 479.98px)  { .lv2-utils { grid-template-columns: 1fr; } }
.lv2-util { display: flex; gap: .85rem; align-items: flex-start; padding: 1.05rem 1.1rem; border: 1px solid var(--lv-border); border-radius: .85rem; background: #fff; transition: border-color .2s, box-shadow .2s; }
.lv2-util:hover { border-color: #c7d6f5; box-shadow: 0 8px 22px rgba(37, 99, 235, .08); }
.lv2-util > i { font-size: 1.15rem; color: var(--lv-accent); width: 2.2rem; height: 2.2rem; flex: none; display: grid; place-items: center; border-radius: .6rem; background: #eff6ff; }
.lv2-util b { display: block; font-size: .96rem; margin-bottom: .15rem; }
.lv2-util p { margin: 0; color: var(--lv-muted); font-size: .88rem; line-height: 1.5; }

/* Monitoring mock (light) */
.lv2-mock-light { background: #fff; border-color: var(--lv-border); box-shadow: 0 24px 60px rgba(15, 23, 42, .12); }
.lv2-mock-light .lv2-mock-bar { background: #f8fafc; border-bottom-color: var(--lv-border); }
.lv2-mock-light .lv2-mock-bar em { color: var(--lv-muted); }
.lv2-alerts { padding: 1rem; display: flex; flex-direction: column; gap: .6rem; }
.lv2-alert { display: flex; align-items: center; gap: .8rem; padding: .75rem .9rem; border-radius: .7rem; border: 1px solid var(--lv-border); border-left-width: 4px; }
.lv2-alert > i { font-size: 1.1rem; }
.lv2-alert b { display: block; font-size: .9rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-weight: 600; }
.lv2-alert small { color: var(--lv-muted); font-size: .74rem; }
.lv2-alert > span { font-size: .8rem; font-weight: 700; padding: .2rem .55rem; border-radius: .45rem; white-space: nowrap; }
.lv2-alert-danger { border-left-color: #ef4444; } .lv2-alert-danger > i, .lv2-alert-danger > span { color: #b91c1c; } .lv2-alert-danger > span { background: #fee2e2; }
.lv2-alert-warn   { border-left-color: #f59e0b; } .lv2-alert-warn > i, .lv2-alert-warn > span { color: #b45309; } .lv2-alert-warn > span { background: #fef3c7; }
.lv2-alert-info   { border-left-color: #3b82f6; } .lv2-alert-info > i, .lv2-alert-info > span { color: #1d4ed8; } .lv2-alert-info > span { background: #dbeafe; }

/* API */
.lv2-feat-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .85rem; }
.lv2-feat-list li { display: flex; gap: .8rem; align-items: flex-start; font-size: .98rem; line-height: 1.55; }
.lv2-feat-list i { color: var(--lv-accent); font-size: 1.1rem; width: 2rem; height: 2rem; flex: none; display: grid; place-items: center; border-radius: .55rem; background: #eff6ff; }
.lv2-code { border-radius: 1.1rem; overflow: hidden; background: #0b1226; border: 1px solid #1e293b; box-shadow: 0 24px 60px rgba(15, 23, 42, .25); }
.lv2-code pre { margin: 0; padding: 1.25rem 1.35rem; overflow-x: auto; font-size: .82rem; line-height: 1.65; color: #cbd5e1; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.lv2-code .c-cmd { color: #f472b6; } .lv2-code .c-str { color: #86efac; } .lv2-code .c-com { color: #64748b; }
.lv2-code .c-key { color: #93c5fd; } .lv2-code .c-num { color: #fbbf24; }

/* Secondary services */
.lv2-more { padding-top: 4.5rem; padding-bottom: 4rem; }
.lv2-mini { display: flex; gap: 1rem; align-items: flex-start; padding: 1.3rem; border-radius: var(--lv-radius); border: 1px dashed #cdd7e6; background: #fbfcfe; }
.lv2-mini > i { font-size: 1.3rem; color: #475569; width: 2.4rem; height: 2.4rem; flex: none; display: grid; place-items: center; border-radius: .65rem; background: #eef2f7; }
.lv2-mini b { display: block; margin-bottom: .25rem; }
.lv2-mini p { margin: 0; color: var(--lv-muted); font-size: .92rem; line-height: 1.55; }

/* Notice + CTA */
.lv2-notice { display: flex; gap: 1rem; align-items: flex-start; padding: 1.2rem 1.4rem; border-radius: var(--lv-radius); background: #fffbeb; border: 1px solid #fde68a; margin-bottom: 2rem; }
.lv2-notice > i { font-size: 1.4rem; color: #d97706; }
.lv2-notice b { display: block; margin-bottom: .2rem; color: #78350f; }
.lv2-notice p { margin: 0; color: #92400e; font-size: .95rem; line-height: 1.55; }
.lv2-cta {
    text-align: center; color: #fff; border-radius: 1.4rem; padding: 3.5rem 1.5rem;
    background:
        radial-gradient(30rem 16rem at 90% 0%, rgba(34, 211, 238, .35), transparent 60%),
        linear-gradient(135deg, #1d4ed8, #4338ca 60%, #6d28d9);
    box-shadow: 0 24px 60px rgba(37, 99, 235, .3);
}
.lv2-cta h2 { font-weight: 800; letter-spacing: -.03em; font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: .7rem; }
.lv2-cta p { color: #dbe6ff; font-size: 1.05rem; margin: 0 auto 1.6rem; max-width: 36rem; }

/* Contact */
.lv2-contact { padding-top: 1rem; }
.lv2-contact-card { max-width: 40rem; margin: 0 auto; text-align: center; padding: 2.5rem 1.5rem; border: 1px solid var(--lv-border); border-radius: 1.25rem; background: #fff; box-shadow: var(--lv-shadow); }
.lv2-contact-card .lv2-ico { margin: 0 auto 1rem; }
.lv2-contact-mail { display: inline-block; font-size: clamp(1.15rem, 2.4vw, 1.45rem); font-weight: 700; color: var(--lv-accent); letter-spacing: -.01em; border-bottom: 2px solid rgba(37, 99, 235, .25); padding-bottom: .1rem; word-break: break-all; }
.lv2-contact-mail:hover { color: var(--lv-accent2); border-bottom-color: var(--lv-accent2); }
.lv2-footer-links { display: inline-flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: .4rem 1.1rem; }
.lv2-footer-links a { color: var(--lv-accent); font-weight: 600; font-size: .92rem; border-bottom: 1px solid rgba(37, 99, 235, .3); padding-bottom: .05rem; }
.lv2-footer-links a:hover { color: var(--lv-accent2); border-bottom-color: var(--lv-accent2); }

/* Footer */
.lv2-footer { border-top: 1px solid var(--lv-border); padding: 1.6rem 0; color: var(--lv-muted); font-size: .88rem; }
.lv2-brand-sm { font-size: 1.05rem; color: var(--lv-text); }
.lv2-brand-sm b, .lv2-brand-sm i { color: var(--lv-accent); }
.lv2-preview-tag { font-size: .78rem; color: #b45309; background: #fef3c7; border-radius: 999px; padding: .2rem .7rem; }

/* Reveal */
.lv2-reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.lv2-reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .lv2-reveal { opacity: 1; transform: none; transition: none; }
    .lv2-dot { animation: none; }
    html { scroll-behavior: auto; }
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 991.98px) {
    /* g-5's -1.5rem row margins outgrow the container padding on narrow screens. */
    .lv2 .row.g-5 { --bs-gutter-x: 1.5rem; }
    .lv2-hero { padding: 7rem 0 4rem; }
    .lv2-section { padding: 4rem 0; }
}
@media (max-width: 575.98px) {
    .lv2-mock-body { grid-template-columns: 1fr; }
    .lv2-node-sub { margin-left: .5rem; } .lv2-node-iss { margin-left: 1rem; } .lv2-node-ee { margin-left: 1.5rem; }
    .lv2-code pre { font-size: .74rem; }
    .lv2 .btn-lg { width: 100%; }
    .lv2-cta { padding: 2.5rem 1.1rem; }
}

/* Privacy notice modal */
.lv2-privacy { border: 0; border-radius: 1.1rem; box-shadow: var(--lv-shadow); }
.lv2-privacy .modal-header, .lv2-privacy .modal-footer { border-color: var(--lv-border); }
.lv2-privacy .modal-title { font-weight: 700; }
.lv2-privacy-item { display: flex; gap: .9rem; align-items: flex-start; padding: .8rem 0; border-top: 1px solid var(--lv-border); }
.lv2-privacy-item .lv2-ico { flex: 0 0 auto; width: 2.3rem; height: 2.3rem; font-size: 1.05rem; margin: 0; }
.lv2-privacy-item h3 { font-size: .98rem; font-weight: 700; margin: 0 0 .2rem; }
.lv2-privacy-item p { color: var(--lv-muted); font-size: .92rem; line-height: 1.6; margin: 0; }