/*
Theme Name: Voxel Form Lab
Theme URI: https://voxelformlab.com
Author: Voxel Form Lab
Author URI: https://voxelformlab.com
Description: Modern, tech-forward WordPress theme for Voxel Form Lab — a 3D / AI technology studio based in Hong Kong. Dark aesthetic with deep navy, cyan accents, and a voxel-inspired design language.
Version: 1.0.0
License: Proprietary
Text Domain: voxel-form-lab
Tags: dark-theme, one-column, custom-logo, responsive, block-styles, full-width-template
*/

/* ═════════════════════════════════════════════
   DESIGN SYSTEM — Voxel Form Lab
   ═════════════════════════════════════════════ */
:root {
  /* palette */
  --c-bg:        #080c18;
  --c-surface:   #0f1429;
  --c-surface-2: #161d3b;
  --c-border:    #1e2750;
  --c-text:      #e2e8f0;
  --c-text-dim:  #8892b0;
  --c-cyan:      #00d4ff;
  --c-cyan-dim:  #0088aa;
  --c-violet:    #7c3aed;
  --c-violet-dim:#5b21b6;
  --c-white:     #ffffff;

  /* typography */
  --ff-body:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --ff-mono:   'JetBrains Mono', 'Fira Code', monospace;
  --ff-display: var(--ff-body);
  --fs-xs:     0.75rem;
  --fs-sm:     0.875rem;
  --fs-base:   1rem;
  --fs-lg:     1.125rem;
  --fs-xl:     1.25rem;
  --fs-2xl:    1.5rem;
  --fs-3xl:    1.875rem;
  --fs-4xl:    2.25rem;
  --fs-5xl:    3rem;
  --fs-6xl:    3.75rem;

  /* spacing */
  --section-gap: 6rem;
  --content-max: 1200px;

  /* effects */
  --radius: 8px;
  --radius-lg: 16px;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
}

/* subtle grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

.site-wrap {
  position: relative;
  z-index: 1;
}

a { color: var(--c-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-white); }

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-white);
}

h1 { font-size: var(--fs-6xl); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-5xl); letter-spacing: -0.015em; }
h3 { font-size: var(--fs-3xl); }

::selection { background: var(--c-cyan); color: var(--c-bg); }

/* ═════════════════════════════════════════════
   CONTAINER
   ═════════════════════════════════════════════ */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ═════════════════════════════════════════════
   HEADER / NAVIGATION
   ═════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(8, 12, 24, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--c-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.site-logo-link {
  display: block;
  line-height: 0;
}

.site-logo-img {
  height: 40px;
  width: auto;
}

.site-logo {
  height: 36px;
  width: auto;
}

.site-title {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--c-white);
  letter-spacing: -0.01em;
}

.site-title span {
  color: var(--c-cyan);
}

.main-navigation { display: flex; align-items: center; gap: 0.5rem; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-menu a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: all var(--transition);
}

.nav-menu a:hover,
.nav-menu .current-menu-item a {
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: var(--c-cyan);
  color: var(--c-bg) !important;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--fs-sm);
  transition: all var(--transition);
}

.nav-cta:hover {
  background: var(--c-white);
  box-shadow: var(--shadow-glow);
}

/* mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.25rem;
  align-items: center;
  justify-content: center;
}

/* ═════════════════════════════════════════════
   HERO SECTION
   ═════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 1.5rem 6rem;
  overflow: hidden;
}

/* animated voxel particles */
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  border: 1px solid var(--c-cyan-dim);
  border-radius: 999px;
  color: var(--c-cyan);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.hero h1 {
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--c-cyan), var(--c-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--fs-xl);
  color: var(--c-text-dim);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--fs-base);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--c-cyan);
  color: var(--c-bg);
}

.btn-primary:hover {
  background: var(--c-white);
  color: var(--c-bg);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid var(--c-border);
  color: var(--c-text);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--c-cyan);
  color: var(--c-white);
  background: rgba(0, 212, 255, 0.05);
}

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce-down 2s infinite;
  color: var(--c-text-dim);
  font-size: 1.5rem;
  cursor: pointer;
}

@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ═════════════════════════════════════════════
   SECTIONS (shared)
   ═════════════════════════════════════════════ */
.section {
  padding: var(--section-gap) 1.5rem;
}

.section-label {
  display: block;
  font-family: var(--ff-mono);
  font-size: var(--fs-xs);
  color: var(--c-cyan);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 1rem;
  font-size: var(--fs-5xl);
}

.section-desc {
  color: var(--c-text-dim);
  font-size: var(--fs-lg);
  max-width: 600px;
  line-height: 1.7;
}

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

/* ═════════════════════════════════════════════
   SERVICES GRID
   ═════════════════════════════════════════════ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-violet));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  border-color: var(--c-cyan-dim);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(124, 58, 237, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: var(--fs-xl);
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

/* ═════════════════════════════════════════════
   ABOUT SECTION
   ═════════════════════════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--c-text-dim);
  margin-bottom: 1.5rem;
  font-size: var(--fs-lg);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.stat-number {
  font-size: var(--fs-5xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--c-cyan), var(--c-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
}

/* ═════════════════════════════════════════════
   PORTFOLIO GRID
   ═════════════════════════════════════════════ */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 12, 24, 0.95), rgba(8, 12, 24, 0.3));
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.portfolio-item:hover .portfolio-overlay { opacity: 1; }
.portfolio-item:hover img { transform: scale(1.05); }

.portfolio-overlay h3 {
  font-size: var(--fs-xl);
  margin-bottom: 0.25rem;
}

.portfolio-overlay .category {
  color: var(--c-cyan);
  font-size: var(--fs-sm);
  font-family: var(--ff-mono);
}

.portfolio-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 2.5rem;
  color: var(--c-text-dim);
  flex-direction: column;
  gap: 1rem;
}

/* ═════════════════════════════════════════════
   CONTACT SECTION
   ═════════════════════════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-info h3 {
  margin-bottom: 1rem;
}

.contact-details {
  list-style: none;
  margin-top: 2rem;
}

.contact-details li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text-dim);
}

.contact-details .detail-icon {
  width: 40px;
  height: 40px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.contact-details strong {
  display: block;
  color: var(--c-white);
  margin-bottom: 0.25rem;
}

.contact-form-wrap {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.contact-form .form-group {
  margin-bottom: 1.5rem;
}

.contact-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-text);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-text);
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--c-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.contact-form textarea { min-height: 140px; resize: vertical; }

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

/* ═════════════════════════════════════════════
   FOOTER
   ═════════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--c-border);
  padding: 4rem 1.5rem 2rem;
  background: var(--c-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  max-width: var(--content-max);
  margin: 0 auto 3rem;
}

.footer-brand p {
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
  color: var(--c-white);
}

.footer-col ul {
  list-style: none;
}

.footer-col li { margin-bottom: 0.75rem; }

.footer-col a {
  color: var(--c-text-dim);
  font-size: var(--fs-sm);
}

.footer-col a:hover { color: var(--c-cyan); }

.footer-bottom {
  max-width: var(--content-max);
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-sm);
  color: var(--c-text-dim);
}

.footer-bottom a { color: var(--c-text-dim); }
.footer-bottom a:hover { color: var(--c-cyan); }

/* ═════════════════════════════════════════════
   PAGE HEADER (internal pages)
   ═════════════════════════════════════════════ */
.page-header {
  padding: 10rem 1.5rem 4rem;
  text-align: center;
  background: linear-gradient(to bottom, var(--c-surface), var(--c-bg));
}

.page-header h1 {
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--c-text-dim);
  font-size: var(--fs-lg);
  max-width: 500px;
  margin: 0 auto;
}

/* ═════════════════════════════════════════════
   RESPONSIVE
   ═════════════════════════════════════════════ */
@media (max-width: 1024px) {
  :root {
    --section-gap: 4rem;
  }

  h1 { font-size: var(--fs-5xl); }
  h2 { font-size: var(--fs-4xl); }
  .section-title { font-size: var(--fs-4xl); }

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

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

@media (max-width: 768px) {
  :root {
    --section-gap: 3rem;
  }

  h1 { font-size: var(--fs-4xl); }
  h2 { font-size: var(--fs-3xl); }
  .section-title { font-size: var(--fs-3xl); }

  .menu-toggle { display: flex; }

  .site-logo-img { height: 32px; }

  .main-navigation {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--c-surface);
    border-left: 1px solid var(--c-border);
    flex-direction: column;
    padding: 5rem 1.5rem 2rem;
    transition: right var(--transition);
    gap: 1rem;
  }

  .main-navigation.active { right: 0; }

  .nav-menu {
    flex-direction: column;
    width: 100%;
  }

  .nav-menu a {
    padding: 0.75rem 1rem;
    font-size: var(--fs-base);
  }

  .hero { padding: 6rem 1rem 4rem; }

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

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  h1 { font-size: var(--fs-3xl); }
  h2 { font-size: var(--fs-2xl); }
  .hero-subtitle { font-size: var(--fs-base); }
  .hero-actions { flex-direction: column; }
  .about-stats { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 1.5rem; }
}

/* ═════════════════════════════════════════════
   ANIMATIONS
   ═════════════════════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* staggered children */
.stagger > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.15s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.2s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.25s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.3s; }

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ═════════════════════════════════════════════
   ADMIN BAR OFFSET
   ═════════════════════════════════════════════ */
.admin-bar .site-header { top: 32px; }
@media (max-width: 782px) {
  .admin-bar .site-header { top: 46px; }
}