/* ============================================================
   SYSAPIEN — GLOBAL STYLESHEET
   Dark precision luxury. Variables, reset, typography, nav, footer.
   ============================================================ */

:root {
  /* Brand colors */
  --bg: #07070F;
  --bg-elev: #0C0C1A;
  --bg-elev-2: #111126;
  --blue: #4F6EF7;
  --blue-light: #7EB2FF;
  --navy: #1A2B6B;
  --navy-dark: #162058;
  --purple: #7B5CF0;
  --teal: #00C9A7;

  --text: #FFFFFF;
  --text-muted: #8896CC;
  --text-dim: #545E84;

  --border: rgba(79, 110, 247, 0.12);
  --border-strong: rgba(79, 110, 247, 0.28);

  /* Typography */
  --font-display: 'Cormorant Garamond', serif;
  --font-body: 'Outfit', sans-serif;

  /* Type scale (1.333 ratio, fluid) */
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);
  --fs-lg: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem);
  --fs-xl: clamp(1.7rem, 1.4rem + 1.4vw, 2.4rem);
  --fs-2xl: clamp(2.2rem, 1.7rem + 2.4vw, 3.4rem);
  --fs-3xl: clamp(2.8rem, 2rem + 3.6vw, 4.8rem);
  --fs-4xl: clamp(3.4rem, 2.2rem + 5.5vw, 6rem);
  --fs-5xl: clamp(3.8rem, 2.2rem + 7.5vw, 7.6rem);

  /* Spacing */
  --space-section: clamp(5rem, 4rem + 5vw, 9rem);
  --container-w: 1320px;
  --gutter: clamp(1.5rem, 4vw, 4rem);

  /* Motion */
  --ease: cubic-bezier(0.65, 0.05, 0.1, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.25s;
  --dur-med: 0.5s;
  --dur-slow: 0.9s;

  --radius: 2px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-md);
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  cursor: none;
}

@media (max-width: 860px), (hover: none) {
  body { cursor: auto; }
}

img, svg { display: block; max-width: 100%; }

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

ul, ol { list-style: none; margin: 0; padding: 0; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text);
}

p { margin: 0; }

::selection {
  background: var(--blue);
  color: #fff;
}

/* Layout helpers */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section {
  position: relative;
  padding: var(--space-section) 0;
}

.section-inner { position: relative; z-index: 2; }

main { display: block; overflow: hidden; }

/* Eyebrow / labels */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--teal);
}

.eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--teal);
}

.eyebrow.muted {
  color: var(--text-muted);
}
.eyebrow.muted::before {
  background: var(--text-muted);
}

/* Headings */
.h-display {
  font-size: var(--fs-5xl);
  font-weight: 600;
}

.h-section {
  font-size: var(--fs-3xl);
  font-weight: 600;
}

.h-card {
  font-size: var(--fs-xl);
  font-weight: 600;
}

.lede {
  font-size: var(--fs-lg);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 46ch;
}

.body-text {
  color: var(--text-muted);
  font-weight: 300;
  max-width: 60ch;
}

.gradient-word {
  background: linear-gradient(120deg, var(--blue-light), var(--blue) 55%, var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Word reveal spans (for stagger animation) */
.reveal-word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}
.reveal-word > span {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}

/* Buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 1.05em 2.2em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: transparent;
  cursor: none;
  overflow: hidden;
  isolation: isolate;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

@media (max-width: 860px), (hover: none) { .btn { cursor: pointer; } }

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-101%);
  transition: transform var(--dur-fast) var(--ease);
  z-index: -1;
}

.btn-primary {
  border-color: var(--teal);
  color: var(--teal);
}
.btn-primary::before { background: var(--teal); }
.btn-primary:hover {
  color: var(--bg);
}
.btn-primary:hover::before { transform: translateX(0); }

.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost::before { background: var(--blue); opacity: 0.12; }
.btn-ghost:hover {
  border-color: var(--blue);
}
.btn-ghost:hover::before { transform: translateX(0); }

.btn-block { width: 100%; }

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

/* Custom cursor */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  will-change: transform;
}

.cursor-dot {
  width: 8px;
  height: 8px;
  background: var(--teal);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  transition: opacity 0.2s ease;
}

.cursor-ring {
  width: 28px;
  height: 28px;
  border: 1px solid var(--teal);
  border-radius: 50%;
  opacity: 0;
  transition: width var(--dur-fast) var(--ease), height var(--dur-fast) var(--ease),
    opacity 0.2s ease, border-radius var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}

.cursor-ring.is-active {
  opacity: 1;
}

.cursor-ring.is-link {
  width: 64px;
  height: 64px;
}

.cursor-ring.is-cross {
  width: 40px;
  height: 40px;
  border-radius: 0;
  transform: translate(-50%, -50%) rotate(45deg);
}

@media (max-width: 860px), (hover: none) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* Grain overlay */
.grain-overlay {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 9998;
  opacity: 0.035;
  mix-blend-mode: overlay;
}

/* Geometric decorative motifs */
.motif {
  position: absolute;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

.motif-diamond {
  border: 1px solid rgba(79, 110, 247, 0.12);
  transform: rotate(45deg);
}

.motif-triangle {
  width: 0;
  height: 0;
  border-style: solid;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.6rem 0;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease),
    backdrop-filter var(--dur-med) var(--ease), padding var(--dur-med) var(--ease);
}

.nav.is-scrolled {
  background: rgba(7, 7, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  height: 30px;
}
.nav__logo svg, .nav__logo img {
  height: 30px;
  width: auto;
  transition: filter var(--dur-fast) var(--ease);
}
.nav__logo:hover svg .icon-pulse,
.nav__logo:hover img {
  filter: drop-shadow(0 0 10px rgba(0, 201, 167, 0.45));
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.6rem;
}

.nav__links a {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
  padding-bottom: 4px;
  white-space: nowrap;
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--teal);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav__links a:hover::after,
.nav__links a.is-active::after {
  transform: scaleX(1);
}

.nav__cta { display: flex; align-items: center; gap: 1.2rem; }
.nav__cta .btn { white-space: nowrap; }

.nav__burger {
  display: none;
  width: 28px;
  height: 20px;
  position: relative;
  background: none;
  border: none;
  cursor: none;
  z-index: 1100;
}
@media (max-width: 860px), (hover: none) { .nav__burger { cursor: pointer; } }

.nav__burger span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--text);
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease), top var(--dur-fast) var(--ease);
}
.nav__burger span:nth-child(1) { top: 0; }
.nav__burger span:nth-child(2) { top: 9px; }
.nav__burger span:nth-child(3) { top: 18px; }

.nav__burger.is-open span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

@media (max-width: 1024px) {
  .nav__links-desktop { display: none; }
  .nav__cta .btn { display: none; }
  .nav__burger { display: block; }
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 1050;
  background: #07070F;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 0 var(--gutter);
  transform: translateY(-100%);
  transition: transform var(--dur-med) var(--ease);
}
.nav-overlay.is-open { transform: translateY(0); }

.nav-overlay__links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.nav-overlay__links a {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 600;
  color: var(--text);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out), color var(--dur-fast) var(--ease);
}
.nav-overlay.is-open .nav-overlay__links a {
  opacity: 1;
  transform: translateY(0);
}
.nav-overlay__links a:hover { color: var(--teal); }

.nav-overlay__links a:nth-child(1) { transition-delay: 0.05s; }
.nav-overlay__links a:nth-child(2) { transition-delay: 0.1s; }
.nav-overlay__links a:nth-child(3) { transition-delay: 0.15s; }
.nav-overlay__links a:nth-child(4) { transition-delay: 0.2s; }
.nav-overlay__links a:nth-child(5) { transition-delay: 0.25s; }

.nav-overlay__cta {
  margin-top: 3rem;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-med) var(--ease-out) 0.3s, transform var(--dur-med) var(--ease-out) 0.3s;
}
.nav-overlay.is-open .nav-overlay__cta {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 1025px) {
  .nav-overlay, .nav__burger { display: none; }
}

/* Footer */
.site-footer {
  position: relative;
  padding: var(--space-section) 0 2rem;
  border-top: 1px solid var(--border);
  overflow: hidden;
}

.site-footer .motif-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue) 50%, transparent);
  opacity: 0.4;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.3fr;
  gap: 3rem;
  padding-bottom: 4rem;
}

.footer__brand .nav__logo { margin-bottom: 1.2rem; height: 28px; }
.footer__brand .nav__logo img, .footer__brand .nav__logo svg { height: 28px; }

.footer__tagline {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  max-width: 32ch;
}

.footer__heading {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.4rem;
}

.footer__links { display: flex; flex-direction: column; gap: 0.8rem; }
.footer__links a {
  font-size: var(--fs-sm);
  color: var(--text);
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}
.footer__links a:hover { color: var(--teal); padding-left: 6px; }

.footer__form {
  display: flex;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 0.6rem;
  margin-top: 1.2rem;
}
.footer__form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: var(--fs-md);
  padding: 0.4rem 0;
}
.footer__form input::placeholder { color: var(--text-dim); }

.footer__form button {
  background: none;
  border: none;
  color: var(--teal);
  cursor: none;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  transition: transform var(--dur-fast) var(--ease);
}
@media (max-width: 860px), (hover: none) { .footer__form button { cursor: pointer; } }
.footer__form button:hover { transform: translateX(4px); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: var(--fs-xs);
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

@media (max-width: 860px) {
  .footer__grid { grid-template-columns: 1fr; gap: 2.4rem; }
  .footer__bottom { flex-direction: column; gap: 0.8rem; text-align: center; }
}

/* Scroll reveal base */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: transform, opacity;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.08s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.16s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.24s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.32s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.4s; }

/* Page loader */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}
.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader__mark {
  width: 80px;
  height: 80px;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}
.preloader.is-revealed .preloader__mark {
  opacity: 1;
  transform: scale(1);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .reveal-stagger > * { opacity: 1; transform: none; }
}

/* Focus states */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* Misc */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--teal);
  color: var(--bg);
  padding: 1rem 1.5rem;
  z-index: 10001;
  font-weight: 600;
}
.skip-link:focus { left: 0; }