/* ============================================================================
   albenze.ai — design system (single source of truth)
   "Future-console" aesthetic: aurora + grid backdrop, gradient accent system,
   glass surfaces with gradient-ring hovers, mono data labels, shimmer hero.
   All motion is transform/opacity only → cheap, CWV-safe. No external fonts.
   ========================================================================== */

/* ---- Tokens ---------------------------------------------------------------*/
:root {
  --bg:            #05060c;
  --bg-2:          #080b16;
  --panel:         rgba(20, 28, 50, 0.42);
  --panel-2:       rgba(28, 38, 66, 0.55);
  --border:        rgba(120, 150, 220, 0.16);
  --border-2:      rgba(130, 170, 255, 0.40);
  --text:          #eaf0ff;
  --text-soft:     #aeb9d8;
  --text-dim:      #6f7da3;
  --accent:        #3b82f6;
  --accent-2:      #22d3ee;
  --accent-3:      #8b8cf8;
  --accent-bright: #6ea8ff;
  --grad:          linear-gradient(120deg, #3b82f6, #22d3ee 55%, #8b8cf8);
  --grad-soft:     linear-gradient(120deg, rgba(59,130,246,.16), rgba(34,211,238,.10) 55%, rgba(139,140,248,.14));
  --glow:          0 0 0 1px rgba(110,168,255,.12), 0 24px 70px -24px rgba(34,211,238,.28);
  --maxw:          1180px;
  --radius:        16px;
  --font:          system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:          ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

/* ---- Reset / base ---------------------------------------------------------*/
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 17px;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Layered backdrop: drifting aurora + fine grid + vignette. All fixed, z-1. */
.bg-fx { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-fx::before { /* aurora */
  content: ""; position: absolute; inset: -20%;
  background:
    radial-gradient(38% 44% at 78% 8%,  rgba(34,211,238,.18), transparent 60%),
    radial-gradient(40% 46% at 12% 14%, rgba(59,130,246,.20), transparent 62%),
    radial-gradient(46% 50% at 60% 92%, rgba(139,140,248,.16), transparent 60%);
  filter: blur(8px);
  animation: drift 26s ease-in-out infinite alternate;
}
.bg-fx::after { /* fine grid, masked to fade out toward edges */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(130,170,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(130,170,255,.05) 1px, transparent 1px);
  background-size: 58px 58px;
  -webkit-mask: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
          mask: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 78%);
}
body::after { /* top vignette + base gradient sink */
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, rgba(5,6,12,0) 60%, var(--bg-2));
}
@keyframes drift {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to   { transform: translate3d(2%, 2%, 0) scale(1.08); }
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-bright); text-decoration: none; transition: color .15s; }
a:hover { color: #a9ccff; }
h1, h2, h3, h4 { line-height: 1.12; margin: 0 0 .5em; font-weight: 700; letter-spacing: -0.03em; }
p { margin: 0 0 1.1em; }
::selection { background: rgba(34,211,238,.28); color: #fff; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent-2); margin: 0 0 16px; display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before { content: ""; width: 16px; height: 1px; background: var(--accent-2); opacity: .8; }
.muted { color: var(--text-soft); }
/* screen-reader-only (keeps headings in the a11y outline without visual change) */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 1000;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 8px; font-weight: 600; transition: top .2s;
}
.skip-link:focus { top: 16px; color: #fff; }

/* ---- System status bar (instrument-panel detail) --------------------------*/
.sysbar {
  font-family: var(--mono); font-size: 11px; letter-spacing: 1.5px; color: var(--text-dim);
  border-bottom: 1px solid var(--border); background: rgba(5,6,12,.6); backdrop-filter: blur(8px);
}
.sysbar .container { display: flex; justify-content: space-between; align-items: center; height: 30px; }
.sysbar .dotline { display: inline-flex; align-items: center; gap: 8px; }
.sysbar .live { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); animation: pulse 2.4s ease-in-out infinite; }
.sysbar .hide-sm { color: var(--text-dim); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

/* ---- Buttons --------------------------------------------------------------*/
/* Buttons — pill, uppercase, dark with a cyan ring (ported from albenze.ai.002) */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 26px; border-radius: 999px;
  font-weight: 700; font-size: 14px; letter-spacing: .4px; text-transform: uppercase;
  border: 1px solid var(--border-2); background: rgba(255,255,255,.035); color: var(--text);
  cursor: pointer; transition: transform .18s cubic-bezier(.23,1,.32,1), background .18s, border-color .18s, box-shadow .2s, color .18s;
}
.btn:hover { transform: translateY(-1px); background: rgba(255,255,255,.09); border-color: var(--accent-2); color: #fff; }
.btn-primary { background: linear-gradient(90deg, #0a141f, #11222e); border-color: var(--accent-2); color: #fff;
  box-shadow: 0 0 0 1px rgba(34,211,238,.35), 0 12px 36px -12px rgba(0,0,0,.6); }
.btn-primary:hover { transform: translateY(-1px); color: #fff;
  box-shadow: 0 0 0 1px var(--accent-2), 0 22px 60px -14px rgba(34,211,238,.4); }
.btn-ghost { background: rgba(255,255,255,.02); color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent-2); color: #fff; transform: translateY(-1px); }

/* Inline wordmark for third-person brand mentions: big A · base LBENZE · small .AI */
.wm { font-weight: 700; letter-spacing: .01em; white-space: nowrap; }
.wm-a  { font-size: 1.16em; }
.wm-ai { font-size: .78em; color: var(--accent-2); }

/* ---- Header / nav ---------------------------------------------------------*/
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px) saturate(1.4);
  background: rgba(5, 6, 12, 0.66);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { font-weight: 800; font-size: 19px; letter-spacing: -0.02em; color: var(--text); }
.brand .dot {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand:hover { color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--text-soft); font-size: 15px; font-weight: 500; position: relative; }
.nav-links a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 1px;
  background: var(--grad); transition: width .25s ease;
}
.nav-links a:not(.btn):hover { color: var(--text); }
.nav-links a:not(.btn):hover::after { width: 100%; }
.nav-links .btn { padding: 9px 18px; }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 26px; height: 26px; }
.mobile-menu { display: none; }

/* ---- Hero -----------------------------------------------------------------*/
.hero { position: relative; padding: 110px 0 84px; text-align: center; overflow: hidden; }
.hero::before { /* central glow orb */
  content: ""; position: absolute; top: -10%; left: 50%; width: 760px; height: 760px;
  transform: translateX(-50%); border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(34,211,238,.16), rgba(59,130,246,.08) 40%, transparent 66%);
}
.hero > .container { position: relative; }
.hero h1 {
  font-size: clamp(2.6rem, 6.6vw, 4.6rem); margin-bottom: 20px; letter-spacing: -0.04em; font-weight: 800;
  background: linear-gradient(110deg, #ffffff, #cfe1ff 38%, #8ee7ff 55%, #ffffff 75%);
  background-size: 220% auto;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent;
  animation: shine 9s linear infinite;
}
@keyframes shine { to { background-position: 220% center; } }
.hero-lede { font-size: clamp(1.05rem, 2.2vw, 1.32rem); color: var(--text-soft); max-width: 730px; margin: 0 auto 34px; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---- Sections -------------------------------------------------------------*/
section { position: relative; padding: 80px 0; }
.section-head { max-width: 740px; margin: 0 auto 52px; text-align: center; }
.section-head .eyebrow { justify-content: center; }
.section-head h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); }
.section-head p { color: var(--text-soft); font-size: 1.08rem; }
.rule { border: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--border-2), transparent); margin: 0; }

/* Answer-first extractable block */
.answer-lead {
  position: relative; max-width: 840px; margin: 0 auto; padding: 30px 34px;
  background: var(--grad-soft); border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 1.16rem; color: var(--text); overflow: hidden;
}
.answer-lead::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--grad); }
.answer-lead strong { color: #fff; }

/* ---- Cards / grids --------------------------------------------------------*/
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  position: relative; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 30px; transition: transform .28s ease, background .28s ease;
  display: flex; flex-direction: column; backdrop-filter: blur(6px);
}
.card::before { /* gradient ring on hover (mask trick) */
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: var(--grad); opacity: 0; transition: opacity .3s ease;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.card:hover { transform: translateY(-6px); background: var(--panel-2); }
.card:hover::before { opacity: .7; }
.card h3 { font-size: 1.22rem; }
.card p { color: var(--text-soft); font-size: .98rem; margin-bottom: 18px; }
.card .card-link { margin-top: auto; font-family: var(--mono); font-size: 12.5px; letter-spacing: 1px; color: var(--accent-2); }
.card:hover .card-link { color: #6ff3ff; }
.card-icon { width: 44px; height: 44px; margin-bottom: 20px; color: var(--accent-bright); }
.card-icon svg { width: 100%; height: 100%; stroke: currentColor; fill: none; stroke-width: 1.5; }
.card:hover .card-icon { color: var(--accent-2); }

/* ---- Trust / clients ------------------------------------------------------*/
.trust { text-align: center; }
.client-row { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 16px 14px; margin-top: 8px; }
.client-name {
  font-family: var(--mono); font-weight: 500; font-size: .82rem; color: var(--text-soft);
  letter-spacing: .5px; text-transform: uppercase;
  padding: 9px 16px; border: 1px solid var(--border); border-radius: 100px; background: rgba(255,255,255,.015);
  transition: border-color .25s, color .25s;
}
.client-name:hover { border-color: var(--border-2); color: #fff; }
.client-note { color: var(--text-dim); font-size: .92rem; margin-top: 24px; font-family: var(--mono); letter-spacing: 1px; }

/* ---- Feature list ---------------------------------------------------------*/
.feature-list { list-style: none; padding: 0; margin: 0 0 1.1em; display: grid; gap: 14px; }
.feature-list li { display: flex; gap: 13px; align-items: flex-start; color: var(--text-soft); }
.feature-list li::before {
  content: ""; flex: 0 0 auto; margin-top: 9px; width: 7px; height: 7px; border-radius: 2px;
  background: var(--grad); box-shadow: 0 0 8px rgba(34,211,238,.6); transform: rotate(45deg);
}

/* ---- FAQ ------------------------------------------------------------------*/
.faq { max-width: 820px; margin: 0 auto; }
.faq details {
  border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; background: var(--panel); overflow: hidden;
  transition: border-color .25s;
}
.faq details[open] { border-color: var(--border-2); }
.faq summary {
  cursor: pointer; padding: 20px 24px; font-weight: 600; font-size: 1.05rem; color: var(--text);
  list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-2); font-size: 1.4rem; flex: 0 0 auto; transition: transform .2s; }
.faq details[open] summary::after { content: "–"; }
.faq .faq-body { padding: 0 24px 22px; color: var(--text-soft); }
.faq .faq-body p:last-child { margin-bottom: 0; }

/* ---- Breadcrumb -----------------------------------------------------------*/
.breadcrumb { font-family: var(--mono); font-size: 12px; letter-spacing: .5px; color: var(--text-dim); padding: 22px 0 0; }
.breadcrumb a { color: var(--text-soft); }
.breadcrumb span { margin: 0 8px; opacity: .5; }

/* ---- Article (service page body) -----------------------------------------*/
.article { max-width: 820px; margin: 0 auto; }
.article h2 { font-size: 1.65rem; margin-top: 2em; }
.article h3 { font-size: 1.25rem; margin-top: 1.6em; }
.article p, .article li { color: var(--text-soft); }
.byline {
  display: flex; align-items: center; gap: 13px; margin: 30px 0 0; padding-top: 22px;
  border-top: 1px solid var(--border); color: var(--text-dim); font-size: .95rem;
}
.byline .avatar {
  width: 42px; height: 42px; border-radius: 50%; flex: 0 0 auto; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-weight: 700; box-shadow: 0 0 0 1px rgba(110,168,255,.3);
}
.byline strong { color: var(--text-soft); }

/* ---- CTA band -------------------------------------------------------------*/
.cta-band { text-align: center; }
.cta-inner {
  position: relative; overflow: hidden;
  background: var(--grad-soft); border: 1px solid var(--border-2); border-radius: 22px; padding: 60px 32px;
  box-shadow: var(--glow);
}
.cta-inner::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(60% 120% at 50% -10%, rgba(34,211,238,.16), transparent 60%);
}
.cta-inner > * { position: relative; }
.cta-inner h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); }
.cta-inner p { color: var(--text-soft); max-width: 580px; margin: 0 auto 28px; }

/* ---- Footer ---------------------------------------------------------------*/
.site-footer { border-top: 1px solid var(--border); padding: 60px 0 34px; margin-top: 48px; color: var(--text-dim); }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
.site-footer h2 { color: var(--text); font-size: .8rem; line-height: 1.4; margin: 0 0 .8em; letter-spacing: 1.5px; text-transform: uppercase; font-family: var(--mono); font-weight: 600; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--text-soft); font-size: .95rem; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .85rem;
  font-family: var(--mono); letter-spacing: 1px; color: var(--text-dim);
}

/* ---- Entrance animation (pure CSS, auto-plays on load) --------------------*/
.reveal { animation: fade-up .8s cubic-bezier(.16,1,.3,1) both; }
@keyframes fade-up { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .reveal, .hero h1, .bg-fx::before, .sysbar .live { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- Responsive -----------------------------------------------------------*/
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  body { font-size: 16px; }
  .sysbar .hide-sm { display: none; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-menu.open { display: block; border-bottom: 1px solid var(--border); background: var(--bg-2); }
  .mobile-menu a { display: block; padding: 14px 24px; color: var(--text-soft); border-top: 1px solid var(--border); }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  section { padding: 60px 0; }
  .hero { padding: 72px 0 52px; }
}

/* ---- Forms --------------------------------------------------------------- */
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-family: var(--mono); font-size: .78rem; font-weight: 500;
  letter-spacing: 1px; text-transform: uppercase; color: var(--text-soft); margin-bottom: 8px; }
.form-field label .req { color: var(--accent-2); }
.input, .textarea, .select {
  width: 100%; padding: 13px 15px; font: inherit; color: var(--text); line-height: 1.4;
  background: rgba(255,255,255,.02); border: 1px solid var(--border); border-radius: 10px;
  transition: border-color .2s, background .2s;
}
.input::placeholder, .textarea::placeholder { color: var(--text-dim); }
.input:focus, .textarea:focus, .select:focus { outline: none; border-color: var(--border-2); background: rgba(255,255,255,.04); }
.textarea { min-height: 150px; resize: vertical; }
.select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236ea8ff' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.form-status { padding: 14px 16px; border-radius: 10px; margin-bottom: 18px; font-size: .95rem; display: none; }
.form-status.show { display: block; }
.form-status.ok  { background: rgba(52,211,153,.10); border: 1px solid rgba(52,211,153,.4); color: #9df3c4; }
.form-status.err { background: rgba(248,113,113,.10); border: 1px solid rgba(248,113,113,.4); color: #fecaca; }
@media (max-width: 680px) { .form-row { grid-template-columns: 1fr; } }