/* =========================================================
   8aService — Design system
   Signature: "LED rail" status-light motif borrowed from
   shift-board indicators (confirmed / pending / free).
   Palette: paper white <-> near-black, one intense LED red.
   ========================================================= */

/* =========================================================
   8aService — Design system
   Signature: a sober "status LED" motif — thin light strips
   that read as black on paper, white on ink, borrowed from
   shift-board indicators (confirmed / pending / free).
   Palette: paper white <-> near-black, one strong editorial red
   reserved for words, never for the light elements themselves.
   ========================================================= */

:root{
  --c-bg: #ffffff;
  --c-bg-soft: #f4f4f5;
  --c-surface: #ffffff;
  --c-fg: #0a0a0b;
  --c-fg-muted: #55585f;
  --c-border: rgba(10,10,11,0.14);
  --c-border-strong: rgba(10,10,11,0.38);
  --c-red: #c8102e;
  --c-red-dim: #9c0c24;
  --c-red-glow: rgba(200,16,46,0.30);
  --c-red-glow-soft: rgba(200,16,46,0.14);

  /* Sober LED tokens: black marks on the light page,
     white marks on the dark page. Never red. */
  --c-led: #0a0a0b;
  --c-led-soft: rgba(10,10,11,0.4);
  --c-led-glow: rgba(10,10,11,0.22);
  --c-led-glow-soft: rgba(10,10,11,0.1);

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
  --font-label: 'DM Sans', sans-serif;

  --radius: 2px;
  --hairline: 1px solid var(--c-border);
  --hairline-strong: 1px solid var(--c-border-strong);
  --shadow-card: 0 1px 0 rgba(10,10,11,0.04);
  --ease: cubic-bezier(.2,.8,.2,1);
}

[data-theme="dark"]{
  --c-bg: #0a0a0b;
  --c-bg-soft: #141416;
  --c-surface: #101012;
  --c-fg: #f4f4f5;
  --c-fg-muted: #9c9da3;
  --c-border: rgba(255,255,255,0.14);
  --c-border-strong: rgba(255,255,255,0.34);
  --c-red: #e2233f;
  --c-red-dim: #c8102e;
  --c-red-glow: rgba(226,35,63,0.35);
  --c-red-glow-soft: rgba(226,35,63,0.16);

  --c-led: #f4f4f5;
  --c-led-soft: rgba(244,244,245,0.45);
  --c-led-glow: rgba(244,244,245,0.28);
  --c-led-glow-soft: rgba(244,244,245,0.12);
  --shadow-card: 0 1px 0 rgba(0,0,0,0.4);
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--c-bg);
  color: var(--c-fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background .25s var(--ease), color .25s var(--ease);
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family: var(--font-display); font-weight:700; line-height:1.12; margin:0 0 .5em; letter-spacing:-0.01em; }
p{ margin:0 0 1em; color: var(--c-fg-muted); }
strong{ color: var(--c-fg); }

.container{ max-width: 1140px; margin: 0 auto; padding: 0 24px; }

:focus-visible{
  outline: 2px solid var(--c-red);
  outline-offset: 3px;
}

/* ---------- Eyebrow / labels ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-red);
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  width:6px; height:6px; border-radius:50%;
  background: var(--c-led);
  box-shadow: 0 0 5px 0 var(--c-led-glow);
  animation: pulse 2.8s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{ opacity:1; }
  50%{ opacity:.35; }
}

/* ---------- Neon rule (signature element) ----------
   A physical strip of red LED tubing: a solid core plus
   layered glow, with a brighter pulse of light travelling
   through it, so it reads as something that emits light
   rather than a flat decorative bar. */
.neon-rule{
  position: relative;
  width: 84px; height: 2px;
  margin: 10px 0 28px;
  background: var(--c-led);
  border-radius: 2px;
  overflow: hidden;
  box-shadow:
    0 0 3px 0 var(--c-led-glow),
    0 0 10px 1px var(--c-led-glow-soft);
}
.neon-rule::after{
  content:"";
  position:absolute; top:0; left:-30px; height:100%; width:30px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.9), transparent);
  animation: travel 4.2s ease-in-out infinite;
  mix-blend-mode: overlay;
}
@keyframes travel{
  0%{ left:-30px; }
  45%{ left: 100%; }
  100%{ left: 100%; }
}
.neon-rule.short{ width:44px; }

/* ---------- Corner marks (signature element, every page) ----------
   A straight-line drafting bracket — two perpendicular edges plus
   one diagonal lead — repeated at the top-right of the first
   section and, mirrored, at the bottom-left of the footer on
   every page, so the site reads as one consistent system.
   No circles: only straight strokes, casting a faint LED shadow. */
.corner-frame{ position:relative; overflow:hidden; }
.corner-frame > .container{ position:relative; z-index:1; }
.corner-mark{
  position:absolute; width:170px; height:170px;
  pointer-events:none; z-index:0; overflow:visible;
}
.corner-mark line{
  stroke: var(--c-led);
  stroke-width: 1.4;
  stroke-linecap: square;
  filter:
    drop-shadow(0 0 2px var(--c-led-glow))
    drop-shadow(0 0 9px var(--c-led-glow-soft));
  opacity: 0.5;
}
[data-theme="light"] .corner-mark line{ opacity: 0.32; }
.corner-mark--tr{ top:-14px; right:-14px; }
.corner-mark--bl{ bottom:-14px; left:-14px; transform: rotate(180deg); }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 50;
  background: color-mix(in srgb, var(--c-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: var(--hairline);
}
.nav-wrap{ display:flex; align-items:center; justify-content:space-between; height:72px; gap: 20px; }
.brand{ display:flex; align-items:center; gap:2px; font-family: var(--font-display); font-weight:700; font-size:19px; }
.brand-mark{
  display:inline-flex; align-items:center; justify-content:center;
  width:30px; height:30px; margin-right:8px;
  border: var(--hairline-strong); border-radius: var(--radius);
  font-family: var(--font-label); font-size:12px; font-weight:700;
  color: var(--c-red);
  box-shadow: inset 0 0 0 1px transparent;
}
.brand-text{ letter-spacing:-0.02em; }

.main-nav{ display:flex; align-items:center; gap: 30px; }
.main-nav a:not(.btn){
  position:relative;
  font-size: 14px; font-weight:500; color: var(--c-fg-muted);
  padding: 6px 0;
  transition: color .2s var(--ease);
}
.main-nav a:not(.btn)::after{
  content:""; position:absolute; left:0; right:100%; bottom:-2px; height:2px;
  background: var(--c-red);
  box-shadow: 0 0 6px 0 var(--c-red-glow);
  transition: right .25s var(--ease);
}
.main-nav a:not(.btn):hover{ color: var(--c-fg); }
.main-nav a:not(.btn):hover::after{ right:0; }
.main-nav a[aria-current="page"]{ color: var(--c-fg); }
.main-nav a[aria-current="page"]::after{ right:0; }

.menu-toggle{
  display:none; background:none; border: var(--hairline-strong); border-radius: var(--radius);
  color: var(--c-fg); font-size:18px; width:40px; height:40px; cursor:pointer;
}

.theme-toggle{
  display:inline-flex; align-items:center; gap:8px;
  border: var(--hairline-strong); border-radius: 999px;
  width: 46px; height: 24px; padding: 2px; cursor:pointer;
  background: var(--c-bg-soft);
  position: relative;
}
.theme-toggle .knob{
  width:18px; height:18px; border-radius:50%;
  background: var(--c-fg-muted);
  transition: transform .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
  transform: translateX(0);
}
[data-theme="dark"] .theme-toggle .knob{
  transform: translateX(22px);
  background: var(--c-red);
  box-shadow: 0 0 8px 1px var(--c-red-glow);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 13px 22px;
  font-family: var(--font-body); font-weight:600; font-size:14px;
  color: var(--c-bg);
  background: var(--c-fg);
  border: 1px solid var(--c-fg);
  border-radius: var(--radius);
  cursor:pointer;
  transition: box-shadow .2s var(--ease), transform .2s var(--ease), background .2s var(--ease);
}
.btn:hover{
  background: var(--c-red);
  border-color: var(--c-red);
  box-shadow: 0 0 0 1px var(--c-red), 0 0 22px 2px var(--c-red-glow-soft);
  transform: translateY(-1px);
}
.btn-ghost{
  background: transparent; color: var(--c-fg); border: var(--hairline-strong);
}
.btn-ghost:hover{ background: transparent; color: var(--c-fg); border-color: var(--c-red); box-shadow: 0 0 0 1px var(--c-red), 0 0 18px 0 var(--c-red-glow-soft); }
.btn-small{ padding: 9px 16px; font-size: 13px; }

/* ---------- Hero ---------- */
.hero{ padding: 88px 0 96px; border-bottom: var(--hairline); position:relative; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items:center; position:relative; z-index:1; }
.hero h1{ font-size: clamp(34px, 4.4vw, 54px); margin-bottom: 22px; }
.hero h1 span{ color: var(--c-red); }
.hero-text{ font-size: 17px; max-width: 46ch; }
.hero-actions{ display:flex; gap:14px; margin: 30px 0 44px; flex-wrap:wrap; }
.hero-trust{ display:flex; gap:34px; flex-wrap:wrap; }
.hero-trust div{ display:flex; flex-direction:column; gap:3px; }
.hero-trust strong{ font-family: var(--font-label); font-size:12px; letter-spacing:.06em; text-transform:uppercase; color: var(--c-red); }
.hero-trust span{ font-size:13px; color: var(--c-fg-muted); }

.hero-card{ position: relative; }
.avatar{ width:64px; height:64px; border-radius:50%; border: var(--hairline-strong); margin-bottom:16px; object-fit:cover; }
.dashboard-preview{
  border: var(--hairline-strong); border-radius: var(--radius);
  background: var(--c-surface);
  box-shadow: var(--shadow-card);
  overflow:hidden;
}
.preview-top{
  display:flex; justify-content:space-between; align-items:center;
  padding: 14px 18px; border-bottom: var(--hairline);
  font-family: var(--font-label); font-size:11px; letter-spacing:.06em; text-transform:uppercase;
  color: var(--c-fg-muted);
}
.preview-top .status{ color: var(--c-red); }
.schedule-row{
  display:grid; grid-template-columns: 1fr auto auto; gap:14px; align-items:center;
  padding: 14px 18px; border-bottom: var(--hairline);
  font-size:14px;
}
.schedule-row:last-child{ border-bottom:none; }
.schedule-row span{ color: var(--c-fg-muted); font-family: var(--font-label); font-size:12px; }
.schedule-row em{ font-style:normal; font-size:11px; font-family: var(--font-label); text-transform:uppercase; letter-spacing:.05em; color: var(--c-red); }
.schedule-row em.muted{ color: var(--c-fg-muted); }

/* ---------- Sections ---------- */
.section{ padding: 96px 0; border-bottom: var(--hairline); }
.section:last-of-type{ border-bottom:none; }
.section-light{ background: var(--c-bg-soft); position:relative; overflow:hidden; }
.section-light .video-grid, .section-light .info-card{ position:relative; z-index:1; }
.section-heading{ max-width: 640px; margin-bottom: 52px; position:relative; z-index:1; }
.section-heading.light .eyebrow{ color: var(--c-red); }
.section-heading h2{ font-size: clamp(26px, 3vw, 38px); }

/* ---------- Cards grid (problema) ---------- */
.cards-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--c-border); border: var(--hairline); }
.info-card{ background: var(--c-bg); padding: 30px 26px; }
.info-card .icon{ font-family: var(--font-label); font-size:12px; color: var(--c-red); display:block; margin-bottom:22px; }
.info-card h3{ font-size:17px; margin-bottom:8px; }
.info-card p{ font-size:14px; margin:0; }

/* ---------- Split layout (solucion) ---------- */
.split-layout{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items:start; }
.lead{ font-size:16px; color: var(--c-fg); }
.feature-list li{ display:flex; flex-direction:column; gap:3px; padding: 18px 0; border-bottom: var(--hairline); }
.feature-list li:first-child{ border-top: var(--hairline); }
.feature-list li strong{ font-size:15px; }
.feature-list li span{ font-size:13.5px; color: var(--c-fg-muted); }

.quote-panel{
  border: var(--hairline-strong); border-radius: var(--radius);
  padding: 34px 30px; background: var(--c-surface);
  position: relative;
}
.quote-panel::before{
  content:""; position:absolute; top:0; left:0; width:100%; height:2px;
  background: var(--c-red); box-shadow: 0 0 10px 0 var(--c-red-glow);
}
.quote-panel blockquote{
  margin: 0 0 16px; font-family: var(--font-display); font-size: 19px; font-weight:500;
  line-height:1.4; color: var(--c-fg);
}
.quote-panel p{ font-size:13px; margin:0; font-family: var(--font-label); text-transform:uppercase; letter-spacing:.04em; }

/* ---------- Videos ---------- */
.video-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 26px; position:relative; z-index:1; }
.video-card{ }
.video-placeholder{
  aspect-ratio: 16/10; border: 1px solid rgba(255,255,255,0.16); border-radius: var(--radius);
  background: #000;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; position:relative; overflow:hidden; margin-bottom:16px;
}
.video-placeholder::after{
  content:""; position:absolute; inset:0;
  background: radial-gradient(circle at 50% 50%, var(--c-red-glow-soft), transparent 70%);
  opacity:0; transition: opacity .25s var(--ease);
}
.video-placeholder:hover::after{ opacity:1; }
.play-btn{
  width:56px; height:56px; border-radius:50%; border: 1px solid var(--c-red);
  background: transparent; color: var(--c-red); font-size:16px; cursor:pointer;
  box-shadow: 0 0 0 1px transparent;
  transition: box-shadow .2s var(--ease), transform .2s var(--ease);
}
.video-placeholder:hover .play-btn{ box-shadow: 0 0 24px 3px var(--c-red-glow); transform: scale(1.06); }
.video-card h3{ font-size:16px; margin-bottom:4px; }
.video-card p{ font-size:13.5px; margin:0; }

/* video modal */
.video-modal{
  position: fixed; inset:0; z-index:100; display:none;
  align-items:center; justify-content:center;
  background: rgba(0,0,0,0.85); padding: 24px;
}
.video-modal.open{ display:flex; }
.video-modal-inner{ width:100%; max-width: 880px; aspect-ratio:16/9; position:relative; border: 1px solid rgba(255,255,255,0.2); }
.video-modal-inner iframe{ width:100%; height:100%; border:0; }
.video-modal-close{
  position:absolute; top:-42px; right:0; background:none; border: 1px solid rgba(255,255,255,0.3);
  color:#fff; width:34px; height:34px; border-radius:50%; cursor:pointer; font-size:16px;
}

/* ---------- Steps (como funciona) ---------- */
.steps{ display:grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.step{ border: var(--hairline); border-radius: var(--radius); padding: 28px 24px; position:relative; }
.step span{
  font-family: var(--font-label); font-size:12px; color: var(--c-red);
  display:inline-flex; align-items:center; justify-content:center;
  width:26px; height:26px; border: 1px solid var(--c-red); border-radius:50%;
  margin-bottom:20px;
}
.step h3{ font-size:16px; margin-bottom:6px; }
.step p{ font-size:13.5px; margin:0; }

/* ---------- Calculator ---------- */
.calculator-section{ background: var(--c-bg-soft); }
.calculator-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:56px; align-items:center; }
.calculator-card{
  border: var(--hairline-strong); border-radius: var(--radius);
  background: var(--c-surface); padding: 30px;
}
.calculator-card label{ display:block; font-family: var(--font-label); font-size:12px; text-transform:uppercase; letter-spacing:.05em; color: var(--c-fg-muted); margin-bottom:8px; }
.calculator-card input[type="number"]{
  width:100%; padding: 12px 14px; margin-bottom:16px;
  border: var(--hairline-strong); border-radius: var(--radius);
  background: var(--c-bg); color: var(--c-fg); font-size:15px; font-family: var(--font-body);
}
.calculator-card input:focus{ outline:none; border-color: var(--c-red); box-shadow: 0 0 0 1px var(--c-red); }
.result-box{
  margin-top: 22px; padding: 18px; border: 1px dashed var(--c-border-strong); border-radius: var(--radius);
  font-size:15px;
}
.result-box strong{ color: var(--c-red); }
.calculator-card small{ display:block; margin-top:14px; font-size:12px; color: var(--c-fg-muted); }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns: .85fr 1.15fr; gap: 56px; }
.contact-details{ margin-top: 26px; display:flex; flex-direction:column; gap:8px; font-size:14px; }
.contact-form{
  display:flex; flex-direction:column; gap:18px;
  border: var(--hairline-strong); border-radius: var(--radius);
  padding: 30px; background: var(--c-surface);
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap:18px; }
.contact-form label{ display:flex; flex-direction:column; gap:8px; font-family: var(--font-label); font-size:11px; text-transform:uppercase; letter-spacing:.05em; color: var(--c-fg-muted); }
.contact-form input, .contact-form textarea{
  font-family: var(--font-body); font-size:14px; color: var(--c-fg);
  padding: 11px 13px; border: var(--hairline-strong); border-radius: var(--radius);
  background: var(--c-bg); resize: vertical;
}
.contact-form input:focus, .contact-form textarea:focus{ outline:none; border-color: var(--c-red); box-shadow: 0 0 0 1px var(--c-red); }
.form-note{ font-size:12px; color: var(--c-fg-muted); margin:0; }

/* ---------- Footer ---------- */
.site-footer{ padding: 48px 0; position:relative; overflow:hidden; border-top: var(--hairline); }
.footer-wrap{ display:grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 24px; align-items:start; position:relative; z-index:1; }
.footer-brand{ margin-bottom: 10px; }
.footer-links{ display:flex; flex-direction:column; gap:10px; font-size:14px; }
.footer-links a{ color: var(--c-fg-muted); }
.footer-links a:hover{ color: var(--c-red); }
.footer-wrap p{ font-size:13px; margin:0; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .hero-grid, .split-layout, .contact-grid, .calculator-grid{ grid-template-columns: 1fr; }
  .cards-grid{ grid-template-columns: repeat(2, 1fr); }
  .video-grid{ grid-template-columns: repeat(2, 1fr); }
  .steps{ grid-template-columns: repeat(2, 1fr); }
  .footer-wrap{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px){
  .menu-toggle{ display:inline-flex; align-items:center; justify-content:center; }
  .main-nav{
    position:absolute; top:72px; left:0; right:0;
    flex-direction:column; align-items:flex-start; gap:0;
    background: var(--c-bg); border-bottom: var(--hairline);
    max-height:0; overflow:hidden; transition: max-height .25s var(--ease);
  }
  .main-nav.open{ max-height: 420px; }
  .main-nav a{ width:100%; padding: 16px 24px; border-bottom: var(--hairline); }
  .main-nav a::after{ display:none; }
  .main-nav .btn{ margin: 14px 24px; }
  .cards-grid, .video-grid, .steps{ grid-template-columns: 1fr; }
  .footer-wrap{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .hero{ padding: 56px 0 64px; }
  .section{ padding: 64px 0; }
}