/* ==========================================================================
   variant-a.css — AlterOne Variant A "Shader Aurora Hero"
   Linear/Vercel-inspired dark premium layout.
   ========================================================================== */

/* --- Initial hidden states — prevent FOUC flash before GSAP takes over -- */
.hero__content > * {
  opacity: 0;
}
@media (prefers-reduced-motion: reduce) {
  .hero__content > * {
    opacity: 1 !important;
  }
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 2;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
  line-height: 1.15;
}

h1 { font-size: clamp(2.75rem, 6vw, 4.5rem); font-weight: 700; letter-spacing: -0.035em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.03em; }
h3 { font-size: 1.25rem; }

p { color: var(--color-text-secondary); }

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

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 48px;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(19, 21, 26, 0.72);
  border-bottom: 1px solid var(--color-border);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.nav__logo-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--color-primary), #6366F1);
  position: relative;
}

.nav__logo-mark::after {
  content: '';
  position: absolute;
  inset: 4px;
  border-radius: 3px;
  background: var(--color-bg);
}

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.nav__links a:hover { color: var(--color-text); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.825rem;
  font-weight: 500;
  transition: border-color 0.2s, background 0.2s;
}

.nav__cta:hover {
  border-color: var(--color-border-light);
  background: #23252f;
}

@media (max-width: 768px) {
  .nav__links { display: none; }
}

/* --------------------------------------------------------------------------
   Hero — Aurora
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10rem 1.5rem 6rem;
  overflow: hidden;
  isolation: isolate;
}

.hero__aurora {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero__aurora canvas,
.hero__aurora-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* CSS fallback / always-on backdrop layer */
.hero__aurora-fallback {
  background:
    radial-gradient(ellipse 60% 50% at 20% 10%, rgba(99, 102, 241, 0.25), transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 20%, rgba(124, 92, 252, 0.22), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 90%, rgba(6, 182, 212, 0.12), transparent 60%);
  animation: aurora-drift 24s ease-in-out infinite alternate;
}

@keyframes aurora-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(-2%, 1%, 0) scale(1.05); }
  100% { transform: translate3d(2%, -1%, 0) scale(1); }
}

.hero__grain {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: overlay;
}

.hero__fade-bottom {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 30%;
  background: linear-gradient(180deg, transparent, var(--color-bg));
  z-index: 1;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 880px;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--color-border);
  background: rgba(28, 30, 38, 0.7);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 12px rgba(124, 92, 252, 0.6);
}

.hero__title {
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 620px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(28, 30, 38, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
}

.stat-pill::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-success);
}

.hero__ctas {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  line-height: 1;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(124, 92, 252, 0.4), 0 8px 24px -8px rgba(124, 92, 252, 0.5);
}

.btn--primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(124, 92, 252, 0.5), 0 12px 28px -8px rgba(124, 92, 252, 0.6);
}

.btn--secondary {
  background: transparent;
  border-color: var(--color-border-light);
  color: var(--color-text);
}

.btn--secondary:hover {
  background: var(--color-surface);
  border-color: #44475a;
}

.btn--lg { padding: 0.9rem 1.5rem; font-size: 0.9rem; }

/* --------------------------------------------------------------------------
   Generic sections
   -------------------------------------------------------------------------- */
section { padding: 6rem 0; position: relative; }

.section__head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem;
}

.section__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section__title { margin-bottom: 1rem; }
.section__lead { font-size: 1.05rem; line-height: 1.7; }

/* --------------------------------------------------------------------------
   Pillars (3x2)
   -------------------------------------------------------------------------- */
.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 900px) { .pillars__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .pillars__grid { grid-template-columns: 1fr; } }

.pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color 0.25s, transform 0.25s;
  position: relative;
}

.pillar:hover {
  border-color: var(--color-border-light);
  transform: translateY(-2px);
}

.pillar__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(124, 92, 252, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.pillar__icon svg { width: 20px; height: 20px; }

.pillar h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.pillar p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Modules — tabs
   -------------------------------------------------------------------------- */
.modules { background: #101217; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 3rem;
  padding: 0.4rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
  max-width: 100%;
  overflow-x: auto;
}

.tab {
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab:hover { color: var(--color-text); }

.tab.is-active {
  background: var(--color-primary);
  color: #fff;
}

.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fade-in 0.4s ease; }

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  max-width: 900px;
  margin: 0 auto;
}

@media (max-width: 768px) { .modules-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .modules-grid { grid-template-columns: 1fr; } }

.module-item {
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  transition: border-color 0.2s;
}

.module-item:hover { border-color: var(--color-border-light); }

.module-item__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Security — full-bleed darker
   -------------------------------------------------------------------------- */
.security {
  background: #0D0F14;
  text-align: center;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.security__shield {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  color: var(--color-primary);
}

.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  max-width: 900px;
  margin: 3rem auto 0;
}

@media (max-width: 768px) { .certs-grid { grid-template-columns: repeat(2, 1fr); } }

.cert-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem;
}

.cert-card__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.cert-card__meta {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Pricing
   -------------------------------------------------------------------------- */
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 1000px;
  margin: 0 auto;
}

@media (max-width: 900px) { .pricing__grid { grid-template-columns: 1fr; } }

.plan {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.plan--featured {
  background:
    linear-gradient(var(--color-surface), var(--color-surface)) padding-box,
    linear-gradient(135deg, #7C5CFC, #06B6D4) border-box;
  border: 1px solid transparent;
}

.plan__badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.plan__name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.plan__price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.plan__price span {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-secondary);
}

.plan__desc {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}

.plan__list {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.plan__list li {
  font-size: 0.85rem;
  color: var(--color-text);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.plan__list li::before {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(62, 207, 142, 0.15);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%233ECF8E' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
  margin-top: 3px;
}

.plan .btn { width: 100%; justify-content: center; }

/* --------------------------------------------------------------------------
   Testimonials
   -------------------------------------------------------------------------- */
.testimonials { background: #101217; }

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 900px) { .testimonials__grid { grid-template-columns: 1fr; } }

.testimonial {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
}

.testimonial__quote {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  font-size: 2.5rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--color-primary);
  opacity: 0.6;
}

.testimonial p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.testimonial__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), #6366F1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8rem;
  color: #fff;
}

.testimonial__name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.testimonial__role {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   CTA
   -------------------------------------------------------------------------- */
.cta-final {
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(124, 92, 252, 0.08), transparent 70%);
  padding: 8rem 0;
}

.cta-final h2 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  max-width: 680px;
  margin: 0 auto 1rem;
}

.cta-final p {
  max-width: 520px;
  margin: 0 auto 2rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: #0D0F14;
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

@media (max-width: 800px) { .footer__grid { grid-template-columns: 1fr 1fr; } }

.footer__brand { max-width: 280px; }

.footer__brand .nav__logo { margin-bottom: 0.75rem; }

.footer__brand p { font-size: 0.85rem; line-height: 1.6; }

.footer__col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.footer__col ul { list-style: none; margin: 0; padding: 0; }

.footer__col li {
  font-size: 0.825rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.footer__col a:hover { color: var(--color-text); }

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* --------------------------------------------------------------------------
   Reveal animation initial states
   -------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(20px); }

/* ==========================================================================
   Variant A — Cinematic navbar + hero intro
   Minimal top bar with a vertical side rail (Awwwards-style).
   ========================================================================== */

.nav--cinematic {
  background: transparent;
  backdrop-filter: none;
  border-bottom: none;
}
.nav--cinematic .nav__inner { justify-content: space-between; }
.nav--cinematic .nav__links,
.nav--cinematic .nav__cta { display: none; }

.nav__menu-toggle {
  width: 40px;
  height: 40px;
  background: rgba(11, 13, 18, 0.6);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  backdrop-filter: blur(12px);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.nav__menu-toggle:hover { border-color: var(--color-border-light); }
.nav__menu-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 1px;
}

.nav-rail {
  position: fixed;
  top: 50%;
  right: 24px;
  transform: translateY(-50%);
  width: 40px;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.25rem 0.5rem;
}
.nav-rail__item.is-active { color: var(--color-text); }
.nav-rail__item.is-active .nav-rail__num { opacity: 1; }
@media (min-width: 1101px) {
  .wrap { padding-right: calc(1.5rem + 80px); }
}
.nav-rail::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--color-border) 15%, var(--color-border) 85%, transparent);
}
.nav-rail__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.25rem 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav-rail__item:hover { color: var(--color-text); }
.nav-rail__num {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--color-primary);
  opacity: 0.75;
}
.nav-rail__label {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.22em;
}
.nav-rail__item--cta { color: var(--color-text); }
.nav-rail__item--cta .nav-rail__num { opacity: 1; }

@media (max-width: 1100px) { .nav-rail { display: none; } }

/* Hero intro (replaces the SaaS "eyebrow" pill in variant A) */
.hero__intro {
  position: absolute;
  top: calc(48px + 1.25rem + 72px);
  left: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  z-index: 3;
  font-family: var(--font-mono, 'JetBrains Mono', 'Fira Code', monospace);
  pointer-events: none;
}
.hero__intro-tag {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-primary);
  padding: 0.25rem 0;
}
.hero__intro-line {
  display: block;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
}
.hero__intro-caption {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  max-width: 200px;
  line-height: 1.55;
  text-transform: none;
}

@media (max-width: 900px) {
  .hero__intro {
    position: static;
    align-items: center;
    text-align: center;
    margin-bottom: 1.5rem;
  }
  .hero__intro-line { margin: 0 auto; }
}