/* ==========================================================================
   Excalt Technology — Design System
   Dark premium • Space Grotesk + DM Sans • indigo → violet → cyan
   Tailwind (Play CDN) handles utilities; this file holds tokens, the
   animated background, component classes, and motion logic.
   ========================================================================== */

:root {
  --ink:        #0A0A0F;
  --ink-2:      #0E0E16;
  --surface:    #13131C;
  --surface-2:  #1A1A26;
  --line:       rgba(255, 255, 255, 0.08);
  --line-strong:rgba(255, 255, 255, 0.14);

  --text:       #F4F4F7;
  --muted:      #A6A6BC;

  --indigo:     #6366F1;
  --violet:     #8B5CF6;
  --cyan:       #22D3EE;
  --fuchsia:    #D946EF;

  --grad:       linear-gradient(120deg, var(--indigo) 0%, var(--violet) 45%, var(--cyan) 100%);
  --grad-soft:  linear-gradient(120deg, rgba(99,102,241,.18), rgba(139,92,246,.14), rgba(34,211,238,.14));

  --ease:       cubic-bezier(0.22, 1, 0.36, 1);
  --nav-h:      84px;
}

/* ---------- Base ---------- */
* { -webkit-tap-highlight-color: transparent; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  background-color: var(--ink);
  color: var(--text);
  font-feature-settings: "ss01", "cv01", "cv02";
  overflow-x: hidden;
}

::selection { background: rgba(139, 92, 246, 0.35); color: #fff; }

/* Subtle, on-brand scrollbar */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--violet), var(--indigo));
  border: 3px solid var(--ink);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: linear-gradient(var(--cyan), var(--violet)); }

/* Anchored sections clear the floating navbar */
section[id] { scroll-margin-top: calc(var(--nav-h) + 8px); }

/* ---------- Animated background ---------- */
/* A fixed aurora layer + a faint dotted grid. Pure CSS, GPU-friendly. */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--ink);
  overflow: hidden;
}
.bg-canvas::before {
  content: "";
  position: absolute;
  inset: -10%;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 34px 34px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 35%, transparent 78%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 35%, transparent 78%);
  opacity: 0.7;
}
.aurora {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  will-change: transform;
}
.aurora--1 {
  width: 46vw; height: 46vw; max-width: 640px; max-height: 640px;
  top: -12%; left: -8%;
  background: radial-gradient(circle at 30% 30%, var(--indigo), transparent 62%);
  animation: drift1 22s var(--ease) infinite alternate;
}
.aurora--2 {
  width: 42vw; height: 42vw; max-width: 580px; max-height: 580px;
  top: 4%; right: -10%;
  background: radial-gradient(circle at 70% 30%, var(--cyan), transparent 62%);
  animation: drift2 26s var(--ease) infinite alternate;
}
.aurora--3 {
  width: 50vw; height: 50vw; max-width: 700px; max-height: 700px;
  bottom: -22%; left: 28%;
  background: radial-gradient(circle at 50% 50%, var(--violet), transparent 64%);
  animation: drift3 30s var(--ease) infinite alternate;
}
@keyframes drift1 { to { transform: translate3d(8%, 12%, 0) scale(1.12); } }
@keyframes drift2 { to { transform: translate3d(-10%, 8%, 0) scale(1.08); } }
@keyframes drift3 { to { transform: translate3d(6%, -10%, 0) scale(1.15); } }

/* ---------- Typographic helpers ---------- */
.font-heading { font-family: "Space Grotesk", ui-sans-serif, system-ui, sans-serif; }

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

.text-balance { text-wrap: balance; }
.text-pretty  { text-wrap: pretty; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--grad);
}

/* ---------- Surfaces ---------- */
.glass {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(14px);
          backdrop-filter: blur(14px);
}

/* Cards with a gradient hairline that lights up on hover */
.card {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: 20px;
  transition: transform .4s var(--ease), border-color .3s var(--ease), background .3s var(--ease);
  overflow: hidden;
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--grad);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0;
  transition: opacity .35s var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-strong); }
.card:hover::after { opacity: 0.6; }

/* Spotlight that follows the cursor (set via JS --mx/--my) */
.spotlight { position: relative; }
.spotlight::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(220px circle at var(--mx, 50%) var(--my, 0%),
              rgba(139, 92, 246, 0.16), transparent 60%);
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}
.spotlight:hover::before { opacity: 1; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  padding: 0.95rem 1.5rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .3s var(--ease),
              background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.55); }

.btn-primary {
  position: relative;
  color: #0A0A0F;
  background: var(--grad);
  background-size: 160% 160%;
  background-position: 0% 50%;
  box-shadow: 0 10px 30px -12px rgba(139, 92, 246, 0.7);
}
.btn-primary:hover {
  background-position: 100% 50%;
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -12px rgba(34, 211, 238, 0.6);
}
.btn-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-2px);
}

/* Animated text link underline */
.link-underline {
  position: relative;
  transition: color .25s var(--ease);
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  height: 1.5px; width: 100%;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.link-underline:hover::after,
.link-underline[aria-current="page"]::after { transform: scaleX(1); }
.link-underline[aria-current="page"] { color: #fff; }

/* ---------- Navbar ---------- */
.nav-shell {
  transition: background-color .35s var(--ease), border-color .35s var(--ease),
              box-shadow .35s var(--ease), transform .35s var(--ease);
}
.nav-shell.scrolled {
  background: rgba(10, 10, 15, 0.72);
  -webkit-backdrop-filter: blur(16px);
          backdrop-filter: blur(16px);
  border-color: var(--line);
  box-shadow: 0 12px 40px -22px rgba(0, 0, 0, 0.9);
}

/* ---------- Marquee ---------- */
.marquee { -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
                   mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track {
  display: flex;
  width: max-content;
  gap: 1rem;
  animation: marquee 38s linear infinite;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Accordion (FAQ) ---------- */
.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s var(--ease);
}
.accordion__panel > div { overflow: hidden; }
.accordion__item[data-open="true"] .accordion__panel { grid-template-rows: 1fr; }
.accordion__item[data-open="true"] .accordion__icon { transform: rotate(45deg); }
.accordion__icon { transition: transform .3s var(--ease); }

/* ---------- Reveal on scroll ----------
   Hidden ONLY when JS is active, so content is always visible without JS. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
  will-change: opacity, transform;
}
.js [data-reveal="left"]  { transform: translateX(-30px); }
.js [data-reveal="right"] { transform: translateX(30px); }
.js [data-reveal="scale"] { transform: scale(.94); }
.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Marker / count-up ---------- */
.stat-num { font-variant-numeric: tabular-nums; }

/* ---------- Back to top ---------- */
.to-top {
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), visibility .3s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }

/* ---------- Scroll progress bar ---------- */
.progress-bar {
  transform-origin: left;
  transform: scaleX(0);
  background: var(--grad);
}

/* ---------- Reduced motion: disable all decorative motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .js [data-reveal] { opacity: 1 !important; transform: none !important; }
  .aurora { animation: none; }
}