/* ============================================================
   WebVrDev — Style Sheet
   ============================================================
   CUSTOMIZE HERE: Change colors, fonts, spacing below.
   All design tokens are CSS custom properties on :root.
   ============================================================ */

:root {
  /* ── Brand colors ── */
  --color-bg:           #0b1120;
  --color-bg-surface:   #111827;
  --color-bg-card:      #162032;
  --color-bg-card-hover:#1c2b44;
  --color-accent:       #7ec8f0;
  --color-accent-dim:   #4a8ab5;
  --color-text:         #e2e8f0;
  --color-text-muted:   #94a3b8;
  --color-text-heading: #f1f5f9;
  --color-border:       #1e293b;
  --color-badge-bg:     #1e3a5f;
  --color-badge-text:   #7ec8f0;
  --color-wip-badge-bg: #2d2215;
  --color-wip-badge-text:#f0c060;
  --color-cookie-bg:    #1a2436;
  --color-link-hover:   #a8dcf8;

  /* ── Fonts ── */
  --font-body:    'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* ── Font sizes ── */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* ── Spacing ── */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* ── Borders & Radius ── */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-full: 9999px;

  /* ── Layout ── */
  --max-width:  1120px;
  --header-h:   64px;
}


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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-link-hover); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 2px; }

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

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


/* ============================================================
   UTILITY
   ============================================================ */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-xl); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }


/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(11, 17, 32, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text-heading);
}

.logo img { height: 32px; width: 32px; }

nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

nav a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color .2s;
}
nav a:hover { color: var(--color-text-heading); }

/* mobile hamburger */
.nav-toggle { display: none; background: none; border: none; color: var(--color-text); cursor: pointer; padding: var(--space-sm); }
.nav-toggle svg { width: 24px; height: 24px; }


/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
  text-align: center;
}

.hero-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-badge-text);
  background: var(--color-badge-bg);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: var(--text-5xl);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-heading);
  margin-bottom: var(--space-lg);
}

.hero h1 .accent { color: var(--color-accent); }

.hero-lead {
  max-width: 680px;
  margin: 0 auto var(--space-xl);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-2xl);
  margin-top: var(--space-2xl);
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat strong {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.2;
}

.hero-stat span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}


/* ============================================================
   SECTION COMMON
   ============================================================ */
section { padding: var(--space-3xl) 0; }

.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: var(--space-md);
}

.section-desc {
  max-width: 640px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}


/* ============================================================
   WHY SECTION  (3-column values)
   ============================================================ */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.why-card {
  padding: var(--space-xl);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.why-card .icon {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-md);
}

.why-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: var(--space-sm);
}

.why-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}


/* ============================================================
   TOOLS GRID
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.tool-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: background .2s, border-color .2s, transform .15s;
}

.tool-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-accent-dim);
  transform: translateY(-2px);
}

.tool-card-head {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.tool-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-badge-bg);
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.tool-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-heading);
}

.tool-card h3 a { color: inherit; }
.tool-card h3 a:hover { color: var(--color-accent); }

.tool-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: var(--space-md);
}

.tool-card .tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tool-tag {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  background: var(--color-bg-surface);
  color: var(--color-text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.tool-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
}

.tool-link svg { width: 16px; height: 16px; transition: transform .2s; }
.tool-card:hover .tool-link svg { transform: translateX(3px); }


/* ============================================================
   WIP SECTION
   ============================================================ */
.wip-badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-wip-badge-text);
  background: var(--color-wip-badge-bg);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

.wip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
}

.wip-card {
  padding: var(--space-lg);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-wip-badge-text);
}

.wip-card h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: var(--space-xs);
}

.wip-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* ============================================================
   ABOUT / PERSONAL
   ============================================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.about-text p strong { color: var(--color-text-heading); font-weight: 600; }

.about-aside {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.about-aside h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: var(--space-md);
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
}

.tech-list li {
  font-size: var(--text-sm);
  font-family: var(--font-mono);
  background: var(--color-bg-card);
  color: var(--color-text-muted);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}


/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-legal a:hover { color: var(--color-text-heading); }

.social-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: color .2s, border-color .2s, background .2s;
}

.social-links a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent-dim);
  background: var(--color-bg-card);
}

.social-links svg { width: 18px; height: 18px; }


/* ============================================================
   COOKIE CONSENT
   ============================================================ */
.cookie-banner {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--color-cookie-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-xl);
  backdrop-filter: blur(12px);
}

.cookie-banner.visible { display: block; }

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

.cookie-inner p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
  min-width: 260px;
}

.cookie-inner p a { text-decoration: underline; }

.cookie-btns {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.btn {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background .2s, color .2s;
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-text-muted); color: var(--color-text); }


/* ============================================================
   LEGAL MODAL
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.modal-overlay.visible { display: flex; }

.modal-box {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--space-2xl);
}

.modal-box h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: var(--space-lg);
}

.modal-box h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-heading);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.modal-box p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.modal-close {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  background: none;
  border: 1px solid var(--color-accent-dim);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background .2s;
}

.modal-close:hover { background: var(--color-badge-bg); }


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .hero h1 { font-size: var(--text-3xl); }
  .hero-stats { gap: var(--space-xl); }
  .why-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .wip-grid { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-legal { justify-content: center; }
  .social-links { justify-content: center; }

  nav ul { display: none; }
  nav ul.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }
  .nav-toggle { display: block; }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
  .hero { padding: var(--space-2xl) 0 var(--space-xl); }
  .hero h1 { font-size: var(--text-2xl); }
  .cookie-inner { flex-direction: column; text-align: center; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
  html { scroll-behavior: auto; }
}