/* =========================================================
   Valdrix Systems — styles.css
   Dark military-tech aesthetic
   ========================================================= */

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

:root {
  --bg:          #0a0a0f;
  --bg-alt:      #0d0d17;
  --accent:      #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.12);
  --accent-dim:  rgba(0, 212, 255, 0.06);
  --border:      rgba(0, 212, 255, 0.14);
  --text:        #dde4f0;
  --text-muted:  #5e6e8a;
  --text-dim:    #3a4a60;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* --- Canvas Background --- */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* --- Layer stacking --- */
nav,
section,
footer {
  position: relative;
  z-index: 1;
}

/* --- Shared Utilities --- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
}

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

.bracket {
  color: var(--accent);
}

.section-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  opacity: 0.75;
  margin-bottom: 1rem;
}

section h2 {
  font-family: var(--mono);
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 3rem;
}

/* --- Navigation --- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 1.2rem 0;
  transition: background 0.35s ease, border-bottom 0.35s ease;
}

#navbar.scrolled {
  background: rgba(10, 10, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.18em;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-logo:hover {
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-links .nav-cta {
  border: 1px solid var(--border);
  padding: 0.45rem 1.1rem;
  color: var(--accent);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.nav-links .nav-cta:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Hero --- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 10rem 2rem 5rem;
  max-width: 1160px;
  margin: 0 auto;
}

.hero-inner {
  max-width: 680px;
}

.hero-overline {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.35em;
  color: var(--accent);
  opacity: 0.8;
  margin-bottom: 1.4rem;
}

.hero-heading {
  font-family: var(--mono);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.01em;
  margin-bottom: 1.6rem;
  color: var(--text);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 0.3rem 0.7rem;
}

/* Primary button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
  padding: 0.85rem 2rem;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: color 0.25s;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s ease;
  z-index: -1;
}

.btn-primary:hover {
  color: var(--bg);
}

.btn-primary:hover::before {
  transform: scaleX(1);
}

.btn-primary .arrow {
  transition: transform 0.2s;
  display: inline-block;
}

.btn-primary:hover .arrow {
  transform: translateX(5px);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.scroll-label {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.35em;
  color: var(--text-dim);
}

.scroll-line {
  width: 1px;
  height: 42px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.2; transform: scaleY(0.7); }
  50%       { opacity: 1;   transform: scaleY(1); }
}

/* --- About --- */
#about {
  padding: 7rem 0;
  background: var(--bg-alt);
}

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

.about-text h2 {
  margin-bottom: 1.75rem;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.85;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  border: 1px solid var(--border);
  padding: 1.5rem 1.25rem;
  background: var(--accent-dim);
  transition: border-color 0.25s, background 0.25s;
}

.stat-card:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.stat-num {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.35rem;
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.4;
}

/* --- Services --- */
#services {
  padding: 7rem 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.service-card {
  border: 1px solid var(--border);
  padding: 2rem 1.75rem;
  background: var(--accent-dim);
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease,
    border-color 0.25s,
    background 0.25s;
}

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

.service-card:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-4px) !important;
}

.service-num {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  opacity: 0.65;
  letter-spacing: 0.1em;
  margin-bottom: 1.2rem;
}

.service-card h3 {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.service-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* --- Tech Stack --- */
#tech {
  padding: 7rem 0;
  background: var(--bg-alt);
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tech-item {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--accent-dim);
  cursor: default;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.tech-item:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* --- Contact --- */
#contact {
  padding: 7rem 0;
}

.contact-sub {
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 3rem;
  line-height: 1.75;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 5rem;
  align-items: start;
}

.contact-item {
  margin-bottom: 2.25rem;
}

.contact-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.75;
  margin-bottom: 0.4rem;
}

.contact-value {
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
  display: block;
}

a.contact-value:hover {
  color: var(--accent);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  background: var(--accent-dim);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.9rem;
  padding: 0.8rem 1rem;
  outline: none;
  resize: none;
  transition: border-color 0.2s, background 0.2s;
  -webkit-appearance: none;
}

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

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
  background: var(--accent-glow);
}

/* --- Footer --- */
#footer {
  padding: 2.25rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-logo {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--text);
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.footer-tag {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  /* Mobile nav */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.97);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a,
  .nav-links .nav-cta {
    display: block;
    padding: 1rem 2rem;
    border: none;
    font-size: 0.8rem;
    border-bottom: 1px solid var(--border);
    width: 100%;
  }

  .nav-links .nav-cta {
    background: none;
    color: var(--accent);
  }

  #hero {
    padding: 8rem 2rem 4rem;
    min-height: 100dvh;
  }

  .hero-heading {
    font-size: clamp(2.2rem, 9vw, 3.5rem);
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .about-stats {
    grid-template-columns: 1fr 1fr;
  }

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