/* ═══════════════════════════════════════════════════════════════
   REVERSIO — styles.css
   Design: Industrial-Tech Dark with surgical precision
   Primary: #00355D  |  Background: #060F1A  |  Off-white: #F5F7FA
═══════════════════════════════════════════════════════════════ */

/* ─── RESET & BASE ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --col-primary:     #00355D;
  --col-primary-lt:  #0057A0;
  --col-accent:      #00AAFF;
  --col-accent-dim:  rgba(0, 170, 255, 0.15);
  --col-bg:          #060F1A;
  --col-bg-mid:      #0B1929;
  --col-bg-surface:  #0F2035;
  --col-bg-card:     #0D1E30;
  --col-off-white:   #F5F7FA;
  --col-text:        #BDD0E0;
  --col-text-dim:    #6A8FAD;
  --col-text-muted:  #3A5A78;
  --col-border:      rgba(0, 170, 255, 0.12);
  --col-border-mid:  rgba(0, 170, 255, 0.22);
  --col-success:     #00D68F;

  --font-display:    'Syne', sans-serif;
  --font-mono:       'Share Tech Mono', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  --max-w: 1140px;
  --px:    clamp(1.25rem, 5vw, 3rem);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--col-bg);
  color: var(--col-text);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

strong {
  color: var(--col-off-white);
  font-weight: 600;
}

/* ─── UTILITY ─── */
.section-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--px);
}

/* ─── ANIMATIONS ─── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.03; }
  50%       { opacity: 0.07; }
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 170, 255, 0.5); }
  50%       { box-shadow: 0 0 0 6px rgba(0, 170, 255, 0); }
}

@keyframes terminalLine {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Intersection observer classes */
.fade-in {
  opacity: 0;
  animation: none;
}

.fade-in.visible {
  animation: fadeIn 0.65s ease forwards;
}

.fade-in[data-delay="1"].visible { animation-delay: 0.10s; }
.fade-in[data-delay="2"].visible { animation-delay: 0.22s; }
.fade-in[data-delay="3"].visible { animation-delay: 0.34s; }
.fade-in[data-delay="4"].visible { animation-delay: 0.48s; }

.fade-in-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger for cards */
.features-grid .fade-in-up:nth-child(1) { transition-delay: 0s; }
.features-grid .fade-in-up:nth-child(2) { transition-delay: 0.1s; }
.features-grid .fade-in-up:nth-child(3) { transition-delay: 0.2s; }
.features-grid .fade-in-up:nth-child(4) { transition-delay: 0.3s; }

/* ═══════════════════════════════════════
   HEADER
═══════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 var(--px);
  background: rgba(6, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--col-border);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(6, 15, 26, 0.97);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.4);
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  opacity: 0.92;
  transition: opacity var(--transition);
}

.nav-logo:hover {
  opacity: 1;
}

.nav-logo img {
  height: 32px;
  width: auto;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--col-accent);
  border: 1px solid var(--col-accent);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
  letter-spacing: 0.04em;
}

.nav-cta:hover {
  background: var(--col-accent);
  color: var(--col-bg);
  box-shadow: 0 0 20px rgba(0, 170, 255, 0.3);
}

/* ═══════════════════════════════════════
   HERO
═══════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  padding: 120px var(--px) 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* Animated grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--col-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--col-border) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridPulse 6s ease-in-out infinite;
  pointer-events: none;
}

.hero-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%,
    transparent 30%,
    var(--col-bg) 100%
  );
}

/* Scanlines */
.hero-scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.06) 3px,
    rgba(0, 0, 0, 0.06) 4px
  );
  pointer-events: none;
}

/* Glow orb */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0, 53, 93, 0.35) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

/* Eyebrow */
.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.8rem;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--col-accent);
  animation: dotPulse 2.5s ease-in-out infinite;
  flex-shrink: 0;
}

.eyebrow-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--col-accent);
}

/* Heading */
.hero-heading {
  font-size: clamp(2.6rem, 6.5vw, 4.8rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--col-off-white);
  margin-bottom: 1.6rem;
}

.heading-accent {
  color: var(--col-accent);
  position: relative;
}

/* Subtext */
.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--col-text);
  max-width: 520px;
  margin-bottom: 2.2rem;
  line-height: 1.75;
}

/* Actions */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--col-text-dim);
  letter-spacing: 0.02em;
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--col-off-white);
  letter-spacing: 0.04em;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--col-text-muted);
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--col-border-mid);
  flex-shrink: 0;
}

/* Terminal */
.hero-terminal {
  position: absolute;
  right: var(--px);
  bottom: 80px;
  width: min(420px, 42%);
  background: var(--col-bg-card);
  border: 1px solid var(--col-border-mid);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.3),
    0 24px 60px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(0, 170, 255, 0.06);
  z-index: 1;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid var(--col-border);
}

.tbar-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tbar-red    { background: #FF5F57; }
.tbar-yellow { background: #FEBC2E; }
.tbar-green  { background: #28C840; }

.tbar-title {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--col-text-muted);
  margin-left: 6px;
  letter-spacing: 0.06em;
}

.terminal-body {
  padding: 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.terminal-line {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  display: flex;
  gap: 8px;
  opacity: 0;
}

/* JS will trigger visibility via class */
.terminal-line.tline-visible {
  animation: terminalLine 0.3s ease forwards;
}

.t-prompt {
  color: var(--col-accent);
  flex-shrink: 0;
}

.t-cmd {
  color: var(--col-off-white);
}

.t-out {
  color: var(--col-text-dim);
  padding-left: 1rem;
}

.t-success {
  color: var(--col-success);
  padding-left: 1rem;
}

.t-cursor {
  animation: blink 1s step-start infinite;
  color: var(--col-accent);
}

/* ─── BUTTONS ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--col-accent);
  color: var(--col-bg);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition:
    background var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: #29B8FF;
  box-shadow: 0 0 32px rgba(0, 170, 255, 0.45);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary svg {
  transition: transform var(--transition);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-large {
  font-size: 1.05rem;
  padding: 1rem 2.2rem;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--col-accent);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--col-border-mid);
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-sm);
  transition:
    border-color var(--transition),
    background var(--transition),
    transform var(--transition);
}

.btn-secondary:hover {
  border-color: var(--col-accent);
  background: var(--col-accent-dim);
  transform: translateY(-2px);
}

.btn-secondary svg {
  transition: transform var(--transition);
}

.btn-secondary:hover svg {
  transform: translateX(4px);
}

/* ═══════════════════════════════════════
   SHARED SECTION STYLES
═══════════════════════════════════════ */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--col-accent);
  margin-bottom: 1rem;
  position: relative;
  padding-left: 1.2rem;
}

.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 1px;
  background: var(--col-accent);
}

.section-heading {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--col-off-white);
  line-height: 1.12;
  margin-bottom: 1.2rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--col-text);
  max-width: 560px;
  line-height: 1.72;
}

/* ═══════════════════════════════════════
   FEATURES
═══════════════════════════════════════ */
.features {
  padding: 7rem var(--px);
  background: var(--col-bg-mid);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--col-border-mid), transparent);
}

.features::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--col-border-mid), transparent);
}

.section-header {
  margin-bottom: 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5px;
  border: 1.5px solid var(--col-border-mid);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feature-card {
  background: var(--col-bg-card);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: background var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(0, 170, 255, 0.05), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}

.feature-card:hover {
  background: var(--col-bg-surface);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  border: 1px solid var(--col-border-mid);
  background: rgba(0, 170, 255, 0.07);
  color: var(--col-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color var(--transition), background var(--transition);
}

.feature-card:hover .feature-icon {
  border-color: var(--col-accent);
  background: rgba(0, 170, 255, 0.12);
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--col-off-white);
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--col-text);
  line-height: 1.7;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: auto;
  padding-top: 0.6rem;
  border-top: 1px solid var(--col-border);
}

.feature-list li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--col-text-dim);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.02em;
}

.feature-list li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--col-accent);
  flex-shrink: 0;
  opacity: 0.6;
}

/* ═══════════════════════════════════════
   ABOUT
═══════════════════════════════════════ */
.about {
  padding: 7rem var(--px);
  background: var(--col-bg);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.about-desc {
  font-size: 1rem;
  color: var(--col-text);
  line-height: 1.78;
}

.about-desc strong {
  color: var(--col-off-white);
}

.about-pillars {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--col-border-mid);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.pillar {
  padding: 1.8rem 2rem;
  border-bottom: 1px solid var(--col-border);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: background var(--transition);
  position: relative;
}

.pillar:last-child {
  border-bottom: none;
}

.pillar:hover {
  background: var(--col-bg-surface);
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--col-accent);
  letter-spacing: 0.12em;
  opacity: 0.7;
}

.pillar-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--col-off-white);
  letter-spacing: -0.01em;
}

.pillar-desc {
  font-size: 0.88rem;
  color: var(--col-text-dim);
  line-height: 1.6;
}

/* ═══════════════════════════════════════
   CTA SECTION
═══════════════════════════════════════ */
.cta-section {
  padding: 7rem var(--px);
  background: var(--col-bg-mid);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 50% 50%, rgba(0, 53, 93, 0.4), transparent 70%),
    radial-gradient(ellipse 30% 40% at 50% 50%, rgba(0, 170, 255, 0.08), transparent 60%);
  pointer-events: none;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--col-border-mid), transparent);
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.cta-heading {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800;
  color: var(--col-off-white);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.cta-sub {
  font-size: 1.05rem;
  color: var(--col-text);
  max-width: 460px;
  line-height: 1.7;
}

.cta-footnote {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--col-text-muted);
  letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════
   FOOTER
═══════════════════════════════════════ */
.site-footer {
  background: var(--col-bg);
  border-top: 1px solid var(--col-border);
  padding: 2.5rem var(--px);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.footer-logo-block {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-logo-block img {
  height: 26px;
  width: auto;
  opacity: 0.8;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--col-text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.footer-link {
  font-size: 0.85rem;
  color: var(--col-text-dim);
  transition: color var(--transition);
  letter-spacing: 0.02em;
}

.footer-link:hover {
  color: var(--col-accent);
}

.footer-divider {
  color: var(--col-text-muted);
  opacity: 0.5;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--col-text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  width: 100%;
  text-align: right;
}

.footer-disclaimer {
  margin-left: 1em;
  opacity: 0.6;
}

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */
@media (max-width: 1024px) {
  .hero-terminal {
    display: none;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about-pillars {
    max-width: 520px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 100px;
    padding-bottom: 60px;
    min-height: auto;
  }

  .features {
    padding: 5rem var(--px);
  }

  .about {
    padding: 5rem var(--px);
  }

  .cta-section {
    padding: 5rem var(--px);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .hero-stats {
    gap: 1.2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }

  .footer-copy {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .hero-heading {
    font-size: 2.3rem;
  }

  .stat-divider {
    display: none;
  }

  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* ─── FOCUS STYLES (Accessibility) ─── */
:focus-visible {
  outline: 2px solid var(--col-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .fade-in,
  .fade-in-up {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .hero-grid-bg {
    animation: none;
    opacity: 0.05;
  }
}
.logo-r {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: -0.05em;
  color: var(--col-off-white);
  line-height: 1;
  transition: color var(--transition), text-shadow var(--transition);
}

.nav-logo:hover .logo-r {
  color: var(--col-accent);
  text-shadow: 0 0 12px rgba(0,170,255,0.35);
}







.terminal-line {
  opacity: 0;
  transform: translateY(6px);
}

.terminal-line.tline-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.25s ease, transform 0.25s ease;
}