/* LynkedUp Pro — Cinematic Neon Design System */

:root {
  --bg: #03060c;
  --bg-2: #060c18;
  --bg-3: #0a1326;
  --ink: #e8f4ff;
  --ink-2: #b6c8df;
  --muted: rgba(232, 244, 255, 0.55);
  --dim: rgba(232, 244, 255, 0.35);

  --cyan: #00d1ff;
  --cyan-2: #38e6ff;
  --cyan-deep: #0070a0;
  --orange: #ff8a1e;
  --orange-2: #ffb24d;
  --green: #2bd49c;
  --violet: #8a6bff;
  --magenta: #ff5cf0;

  --glass: rgba(10, 22, 40, 0.55);
  --glass-2: rgba(10, 22, 40, 0.35);
  --border: rgba(0, 209, 255, 0.18);
  --border-strong: rgba(0, 209, 255, 0.42);

  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;

  --shadow-cyan: 0 0 0 1px rgba(0, 209, 255, 0.25), 0 12px 60px -10px rgba(0, 209, 255, 0.45);
  --shadow-cyan-soft: 0 0 0 1px rgba(0, 209, 255, 0.12), 0 18px 80px -20px rgba(0, 209, 255, 0.35);

  --font-display: "Space Grotesk", "Satoshi", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Page-wide animated backdrop --------------------------------- */
.app {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 100vh;
}

/* Floor + ceiling grid + ambient radial */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 18% -10%, rgba(0, 130, 200, 0.28), transparent 60%),
    radial-gradient(1100px 700px at 95% 10%, rgba(120, 60, 255, 0.18), transparent 65%),
    radial-gradient(800px 500px at 50% 120%, rgba(0, 209, 255, 0.18), transparent 60%),
    linear-gradient(180deg, #03060c 0%, #04081a 50%, #03060c 100%);
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 209, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 209, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 30%, #000 30%, transparent 80%);
  animation: gridPan 60s linear infinite;
}

@keyframes gridPan {
  to { background-position: 60px 60px; }
}

/* Mouse-follow spotlight */
.cursor-glow {
  position: fixed;
  z-index: 0;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 209, 255, 0.18), rgba(0, 209, 255, 0) 60%);
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
  transition: opacity 0.4s ease;
  opacity: 0.9;
}

/* Floating particles */
.particles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.particle {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--cyan), 0 0 18px rgba(0, 209, 255, 0.6);
  opacity: 0.5;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform: translateY(0) translateX(0); opacity: 0; }
  10%  { opacity: 0.7; }
  90%  { opacity: 0.7; }
  100% { transform: translateY(-110vh) translateX(40px); opacity: 0; }
}

/* Typography ---------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  color: var(--cyan-2);
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(0, 209, 255, 0.05);
  backdrop-filter: blur(8px);
}
.eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.h-display {
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-weight: 600;
}
.h-display .accent { color: var(--cyan); }
.h-display .grad {
  background: linear-gradient(180deg, #ffffff 0%, #c1e8ff 60%, #5fc8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.h-display .underline {
  position: relative;
  display: inline-block;
  color: var(--cyan);
}
.h-display .underline::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0.05em;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 0 18px var(--cyan);
}

.h-section {
  font-size: clamp(38px, 5vw, 68px);
  line-height: 1;
  letter-spacing: -0.03em;
}
.h-section .accent { color: var(--cyan); }
.h-card {
  font-size: 20px;
  line-height: 1.15;
  font-weight: 600;
}
.sub {
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.55;
  max-width: 56ch;
}

/* Layout -------------------------------------------------------- */
.shell {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 48px;
}
@media (max-width: 700px) {
  .shell { padding: 0 22px; }
}

section.section {
  position: relative;
  padding: 140px 0;
}
section.section.tight { padding: 90px 0; }

/* Section divider beam */
.beam {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(1100px, 80%);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 209, 255, 0.6), transparent);
  box-shadow: 0 0 30px rgba(0, 209, 255, 0.5);
}
.beam.top { top: 0; }
.beam.bottom { bottom: 0; }

/* Glass card ----------------------------------------------------- */
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(12, 26, 48, 0.7), rgba(6, 14, 28, 0.55));
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(.2,.7,.2,1), border-color 0.3s, box-shadow 0.4s;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    400px circle at var(--mx, 50%) var(--my, 0%),
    rgba(0, 209, 255, 0.18),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.35s;
  pointer-events: none;
}
.card:hover::before { opacity: 1; }
.card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-cyan-soft);
  transform: translateY(-3px);
}

.card .corner {
  position: absolute;
  width: 14px; height: 14px;
  border: 1px solid var(--cyan);
  opacity: 0.7;
}
.card .corner.tl { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.card .corner.tr { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.card .corner.bl { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.card .corner.br { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }

.card .pad { padding: 28px; }
.card .pad-lg { padding: 36px; }
.card .pad-sm { padding: 18px; }

/* Buttons ------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 52px;
  padding: 0 26px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.005em;
  border: 1px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.3s, background 0.3s, border-color 0.3s;
  text-decoration: none;
  color: inherit;
}

.btn-primary {
  background: linear-gradient(180deg, #00d1ff 0%, #0094c8 100%);
  color: #001520;
  box-shadow:
    0 0 0 1px rgba(0, 209, 255, 0.6) inset,
    0 12px 30px -10px rgba(0, 209, 255, 0.7),
    0 0 60px -10px rgba(0, 209, 255, 0.55);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(0, 209, 255, 0.9) inset,
    0 18px 40px -10px rgba(0, 209, 255, 0.9),
    0 0 80px -8px rgba(0, 209, 255, 0.7);
}

.btn-orange {
  background: linear-gradient(180deg, #ffb24d 0%, #ff7a00 100%);
  color: #1a0800;
  box-shadow:
    0 0 0 1px rgba(255, 138, 30, 0.6) inset,
    0 12px 30px -10px rgba(255, 138, 30, 0.7),
    0 0 60px -10px rgba(255, 138, 30, 0.55);
}
.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1px rgba(255, 138, 30, 0.9) inset,
    0 18px 40px -10px rgba(255, 138, 30, 0.9),
    0 0 80px -8px rgba(255, 138, 30, 0.7);
}

.btn-ghost {
  background: rgba(10, 22, 40, 0.5);
  border-color: var(--border);
  color: var(--ink);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--border-strong);
  background: rgba(0, 209, 255, 0.08);
  box-shadow: 0 0 0 1px var(--border-strong), 0 0 30px -8px var(--cyan);
}

.btn .arrow {
  display: inline-block;
  transition: transform 0.25s ease;
}
.btn:hover .arrow { transform: translateX(4px); }

/* Pill / Chip --------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(0, 209, 255, 0.06);
  color: var(--cyan-2);
}
.chip.orange {
  border-color: rgba(255, 138, 30, 0.35);
  background: rgba(255, 138, 30, 0.08);
  color: var(--orange-2);
}
.chip.green {
  border-color: rgba(43, 212, 156, 0.3);
  background: rgba(43, 212, 156, 0.08);
  color: var(--green);
}

/* Reveal animation (scroll trigger) ----------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(.2,.7,.2,1), transform 0.9s cubic-bezier(.2,.7,.2,1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
.reveal.delay-1 { transition-delay: 0.08s; }
.reveal.delay-2 { transition-delay: 0.16s; }
.reveal.delay-3 { transition-delay: 0.24s; }
.reveal.delay-4 { transition-delay: 0.32s; }
.reveal.delay-5 { transition-delay: 0.4s; }

/* Helpers ------------------------------------------------------- */
.row { display: flex; align-items: center; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.muted { color: var(--muted); }
.dim { color: var(--dim); }
.mono { font-family: var(--font-mono); }
.tabular { font-variant-numeric: tabular-nums; }

/* Glow rings */
.ring-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  pointer-events: none;
}

/* Animated counter dot */
.live-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 1.4s ease-in-out infinite;
  display: inline-block;
}

/* Wireframe line drawing */
@keyframes drawIn {
  to { stroke-dashoffset: 0; }
}
.wf-line {
  stroke: var(--cyan);
  fill: none;
  stroke-width: 1.5;
  filter: drop-shadow(0 0 6px rgba(0, 209, 255, 0.7));
}

/* Marquee tape */
.marquee {
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
  background: rgba(0, 209, 255, 0.03);
}
.marquee-track {
  display: flex;
  gap: 64px;
  width: max-content;
  animation: scroll 38s linear infinite;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
}
.marquee-track span.sep { color: var(--cyan); }
@keyframes scroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Generic micro-bar (mini chart) */
.spark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 32px;
}
.spark span {
  flex: 1;
  background: linear-gradient(180deg, var(--cyan), transparent);
  border-radius: 2px;
  opacity: 0.85;
}

/* Section title block */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-bottom: 64px;
  max-width: 800px;
}

/* Two-column split */
.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 1024px) {
  .split { grid-template-columns: 1fr; gap: 50px; }
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
  z-index: 100;
  box-shadow: 0 0 14px var(--cyan);
  transition: width 0.05s;
}

/* Selection */
::selection {
  background: rgba(0, 209, 255, 0.35);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--cyan-deep), #1a3a5a);
  border-radius: 10px;
}

/* ============================================================ */
/* EDITORIAL / BLUEPRINT CHROME — v2 enhancements              */
/* ============================================================ */

/* Section frame with architectural dimension corners */
.frame {
  position: relative;
  padding: 60px 56px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background:
    radial-gradient(800px 400px at 30% -10%, rgba(0,209,255,0.08), transparent 70%),
    linear-gradient(180deg, rgba(6,12,24,0.55), rgba(2,6,14,0.35));
  backdrop-filter: blur(6px);
}
.frame-tight { padding: 36px 36px; }

/* Engineering corner ticks — drawn with conic + line gradients */
.frame::before, .frame::after,
.frame-corners > .ct {
  position: absolute;
  width: 28px; height: 28px;
  border-color: var(--cyan);
  pointer-events: none;
}

/* Blueprint dimension marker (tl/tr/bl/br) — draws an L-shape with ticks */
.dim-corner {
  position: absolute;
  width: 36px;
  height: 36px;
  pointer-events: none;
}
.dim-corner svg { width: 100%; height: 100%; display: block; overflow: visible; }
.dim-corner.tl { top: -10px; left: -10px; }
.dim-corner.tr { top: -10px; right: -10px; transform: scaleX(-1); }
.dim-corner.bl { bottom: -10px; left: -10px; transform: scaleY(-1); }
.dim-corner.br { bottom: -10px; right: -10px; transform: scale(-1, -1); }

/* Section number — oversized mono */
.section-number {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--cyan-2);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.section-number .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 209, 255, 0.6);
}
.section-number::before {
  content: "";
  width: 36px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  display: inline-block;
}

/* Vertical mono label running down the page edge */
.vrail {
  position: absolute;
  left: -8px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--border), transparent);
}
.vrail-label {
  position: absolute;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
  top: 30%;
  left: -22px;
  transform: rotate(180deg);
}

/* Editorial display type — even larger, tighter */
.h-mega {
  font-family: var(--font-display);
  font-size: clamp(64px, 9.5vw, 148px);
  line-height: 0.88;
  letter-spacing: -0.045em;
  font-weight: 600;
  text-wrap: balance;
}
.h-mega .grad {
  background: linear-gradient(180deg, #ffffff 0%, #c1e8ff 55%, #5fc8ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.h-mega .accent { color: var(--cyan); }
.h-mega .orange { color: var(--orange); }
.h-mega .outline {
  -webkit-text-stroke: 1.2px var(--cyan);
  color: transparent;
  text-shadow: 0 0 30px rgba(0,209,255,0.35);
}
.h-mega .ital {
  font-style: italic;
  font-weight: 400;
}

/* Mono dimension marker tag (e.g. "18'-7"") */
.dim-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan-2);
  padding: 4px 10px;
  border: 1px dashed rgba(0, 209, 255, 0.45);
  border-radius: 4px;
  background: rgba(0, 209, 255, 0.04);
}

/* Engineering tick line — used as section dividers */
.tick-line {
  height: 18px;
  background-image:
    repeating-linear-gradient(90deg,
      var(--cyan) 0 1px, transparent 1px 24px);
  mask-image: linear-gradient(180deg, var(--cyan) 0 60%, transparent 60%);
  opacity: 0.45;
}

/* Blueprint dimension callout used inside frames */
.dim-callout {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--cyan-2);
  background: rgba(2, 6, 14, 0.85);
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid rgba(0, 209, 255, 0.3);
  white-space: nowrap;
}

/* "Plate" badge — used for product spec labels */
.plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(4, 12, 24, 0.65);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.plate .pnum {
  color: var(--cyan);
  font-weight: 600;
}

/* Floating system status pill (sticky) */
.sys-pill {
  position: fixed;
  bottom: 22px; right: 22px;
  z-index: 40;
  padding: 10px 16px;
  background: rgba(2, 6, 14, 0.85);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-2);
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 30px -10px rgba(0,209,255,0.35);
}
.sys-pill .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 1.4s ease-in-out infinite;
}

/* Section head v2 — split into rail + content */
.shead {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 60px;
  margin-bottom: 80px;
  align-items: start;
}
.shead .rail {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.shead .rail .num-big {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 80px;
  line-height: 1;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #00d1ff, rgba(0, 209, 255, 0.15));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.shead .rail .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--muted);
  text-transform: uppercase;
}
.shead .rail .ticks {
  width: 80px;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--cyan) 0 1px, transparent 1px 9px);
  opacity: 0.6;
}
@media (max-width: 900px) {
  .shead { grid-template-columns: 1fr; gap: 18px; margin-bottom: 50px; }
  .shead .rail { position: static; }
  .shead .rail .num-big { font-size: 54px; }
}

/* "Ledger" / spec list */
.ledger {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
}
.ledger > .row {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.25s, border-color 0.25s;
}
.ledger > .row:hover {
  background: rgba(0, 209, 255, 0.03);
  border-bottom-color: var(--border-strong);
}
.ledger > .row .lnum {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-2);
}

/* Hero specific tweaks (v2) */
.hero-frame {
  position: relative;
  padding: 100px 56px;
  border: 1px solid var(--border);
  border-radius: 28px;
  background:
    radial-gradient(700px 400px at 20% 0%, rgba(0,130,200,0.18), transparent 60%),
    radial-gradient(900px 600px at 100% 100%, rgba(0,209,255,0.12), transparent 65%),
    linear-gradient(180deg, rgba(4, 10, 22, 0.5), rgba(2, 6, 14, 0.2));
  overflow: hidden;
}
@media (max-width: 900px) {
  .hero-frame { padding: 60px 24px; }
}

/* Sharper card variant (for editorial sections) */
.card-sharp {
  background: linear-gradient(180deg, rgba(8, 18, 36, 0.8), rgba(2, 8, 18, 0.7));
  border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
}
.card-sharp.no-radius {
  border-radius: 4px;
}