/* ============================================
   VECTRAL SECURITY — Design System & Styles
   ============================================ */

/* --- CSS Variables --- */
:root {
  /* Palette: Deep midnight + electric cyan accent */
  --bg-primary: #06090f;
  --bg-secondary: #0b1018;
  --bg-tertiary: #111827;
  --bg-card: #0d1320;
  --bg-card-hover: #121d2e;

  --text-primary: #e8ecf1;
  --text-secondary: #8892a4;
  --text-muted: #4b5563;

  --accent: #00e5bf;
  --accent-dim: #00e5bf22;
  --accent-glow: #00e5bf44;
  --accent-alt: #0ea5e9;

  --border: #1a2332;
  --border-light: #1e2d3d;

  /* Typography */
  --font-display: 'Sora', sans-serif;
  --font-mono: 'DM Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-pad: clamp(4rem, 10vw, 8rem);
  --container-max: 1200px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-display);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

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

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

::selection {
  background: var(--accent);
  color: var(--bg-primary);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

/* --- Section Headers --- */
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.section-header {
  margin-bottom: 3.5rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  text-decoration: none;
  gap: 0.5rem;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

.btn--primary:hover {
  background: #00f5cc;
  color: var(--bg-primary);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-1px);
}

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

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--full {
  width: 100%;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.nav--scrolled {
  background: rgba(6, 9, 15, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
}

.nav__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
  text-decoration: none;
}

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

.nav__logo-icon {
  color: var(--accent);
}

.nav__logo-text {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease);
  font-weight: 400;
}

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

.nav__link--cta {
  background: var(--accent);
  color: var(--bg-primary) !important;
  padding: 0.55rem 1.25rem;
  border-radius: 5px;
  font-weight: 500;
}

.nav__link--cta:hover {
  background: #00f5cc;
  box-shadow: 0 0 20px var(--accent-glow);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.25s var(--ease);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.25;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero__bg::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-glow);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
  animation: fadeInUp 0.6s var(--ease) both;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s var(--ease) 0.1s both;
}

.hero__title-accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-alt) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.6s var(--ease) 0.2s both;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
  animation: fadeInUp 0.6s var(--ease) 0.3s both;
}

.hero__stats {
  display: flex;
  gap: 3rem;
  animation: fadeInUp 0.6s var(--ease) 0.4s both;
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.hero__stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.hero__scroll-hint {
  position: absolute;
  bottom: 2rem;
  right: clamp(1.25rem, 4vw, 2rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  writing-mode: vertical-rl;
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}

/* ============================================
   TRUST BAR
   ============================================ */
.trust {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

.trust__logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.trust__logo {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  opacity: 0.5;
  transition: opacity 0.3s var(--ease);
}

.trust__logo:hover {
  opacity: 0.8;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  padding: var(--section-pad) 0;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.25rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
}

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

.service-card__icon {
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

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

.service-card__tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  list-style: none;
}

.service-card__tags li {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  border: 1px solid var(--accent-glow);
}

/* ============================================
   APPROACH
   ============================================ */
.approach {
  padding: var(--section-pad) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.approach__timeline {
  display: grid;
  gap: 0;
}

.approach__step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

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

.approach__step-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  width: 40px;
  padding-top: 0.15rem;
}

.approach__step-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.approach__step-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ============================================
   WEB3 SECTION
   ============================================ */
.web3 {
  padding: var(--section-pad) 0;
}

.web3__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.web3__desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.web3__capabilities {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.web3__cap {
  padding: 1rem 0;
  border-top: 1px solid var(--border);
}

.web3__cap h4 {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.3rem;
  color: var(--text-primary);
}

.web3__cap p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Terminal */
.web3__terminal {
  background: #0a0e16;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.8;
}

.web3__terminal-bar {
  display: flex;
  gap: 6px;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.web3__terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.4;
}

.web3__terminal-bar span:first-child { background: #ef4444; opacity: 0.7; }
.web3__terminal-bar span:nth-child(2) { background: #eab308; opacity: 0.7; }
.web3__terminal-bar span:nth-child(3) { background: #22c55e; opacity: 0.7; }

.web3__terminal-content {
  padding: 1.25rem;
  overflow-x: auto;
}

.web3__terminal-content code {
  white-space: pre;
  color: var(--text-secondary);
}

.t-comment { color: #4b5563; }
.t-keyword { color: #c084fc; }
.t-func { color: #00e5bf; }
.t-type { color: #0ea5e9; }
.t-string { color: #fbbf24; }

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
  padding: var(--section-pad) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.testimonial {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
}

.testimonial p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  font-style: italic;
}

.testimonial footer {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.testimonial footer strong {
  font-size: 0.85rem;
  font-weight: 500;
}

.testimonial footer span {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  padding: var(--section-pad) 0;
}

.about__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 3rem;
}

.about__info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about__numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-content: center;
}

.about__num {
  display: flex;
  flex-direction: column;
}

.about__num-value {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--accent);
}

.about__num-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.about__certs {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.about__cert {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 4px;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: var(--section-pad) 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact__info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact__detail {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact__detail-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.contact__detail a,
.contact__detail span {
  font-size: 0.95rem;
  color: var(--text-primary);
}

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s var(--ease);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%234b5563' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-group select option {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.contact__form-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer__links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer__legal {
  display: flex;
  gap: 1.5rem;
}

.footer__legal a {
  font-size: 0.78rem;
  color: var(--text-muted);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  50.1% { transform-origin: bottom; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .web3__layout,
  .about__layout,
  .contact__layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .hero__stats {
    flex-direction: column;
    gap: 1.25rem;
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.3s var(--ease);
  }

  .nav__links--open {
    transform: translateX(0);
  }

  .nav__link--cta {
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: 7rem 0 3rem;
  }

  .hero__scroll-hint {
    display: none;
  }

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

  .about__numbers {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

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

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .trust__logos {
    gap: 1.5rem;
  }
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Skip to content (screen readers) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}