/* ─── Yubi AppGate – GitHub Pages Stylesheet ─────────────────────── */
/* Dark cybersecurity theme with neon accents                         */

/* ─── Custom Properties ─────────────────────────────────────────── */
:root {
  --bg-primary: #06060c;
  --bg-secondary: #0c0c16;
  --bg-card: #10101c;
  --bg-card-hover: #14142a;
  --bg-nav: rgba(6, 6, 12, 0.92);
  --text-primary: #e2e2ea;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent-cyan: #00d4ff;
  --accent-green: #00ff88;
  --accent-purple: #9b59ff;
  --border-subtle: #1a1a2e;
  --border-accent: #00d4ff22;
  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.15);
  --glow-green: 0 0 20px rgba(0, 255, 136, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1100px;
  --nav-height: 64px;
  --transition: 0.25s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

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

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

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin-bottom: 0.5em; }
h3 { font-size: 1.3rem; margin-bottom: 0.4em; }

p { margin-bottom: 1em; }

/* ─── Navigation ────────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-inner {
  width: 100%;
  max-width: var(--max-width);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .logo-icon,
.nav-logo-img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: width var(--transition);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition);
  border-radius: 2px;
}

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

.page-content {
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 4rem;
}

/* ─── Hero ──────────────────────────────────────────────────────── */
.hero {
  padding: calc(var(--nav-height) + 4rem) 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  font-size: 0.82rem;
  color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.05);
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin-bottom: 0.6em;
}

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

.hero-subtitle {
  font-size: clamp(1.05rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 2rem;
}

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

/* ─── Hero / Page Logo ──────────────────────────────────────────── */
.hero-logo {
  margin-bottom: 1.5rem;
}

.hero-logo img {
  height: 78px;
  width: auto;
}

.page-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}

.page-logo img {
  height: 60px;
  width: auto;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), #0099cc);
  color: #000;
  box-shadow: var(--glow-cyan);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
  color: #000;
}

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

.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ─── Section ───────────────────────────────────────────────────── */
.section {
  padding: 4rem 0;
}

.section-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0.5em auto 0;
  font-size: 1.05rem;
}

/* ─── Cards ─────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

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

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 212, 255, 0.15);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.12);
}

.card h3 { color: var(--text-primary); }
.card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0; }

/* ─── Screenshot Showcase ───────────────────────────────────────── */
.screenshots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.screenshot-item {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  transition: all var(--transition);
}

.screenshot-item:hover {
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
  cursor: pointer;
}

/* ─── Lightbox ──────────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  cursor: pointer;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-height: 90vh;
  max-width: 90vw;
  border-radius: 16px;
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.15);
  transform: scale(0.9);
  transition: transform 0.3s ease;
  cursor: default;
}

.lightbox.active .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 2.2rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.7;
  transition: opacity var(--transition);
  z-index: 2001;
}

.lightbox-close:hover {
  opacity: 1;
}

.screenshot-placeholder {
  aspect-ratio: 9 / 19.5;
  background: var(--bg-card);
  border: 1px dashed var(--border-subtle);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1rem;
  gap: 0.5rem;
}

.screenshot-placeholder .placeholder-icon {
  font-size: 2rem;
  opacity: 0.5;
}

/* ─── Steps ─────────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 680px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #000;
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h3 {
  margin-bottom: 0.3em;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* ─── FAQ / Accordion ───────────────────────────────────────────── */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition);
  font-family: inherit;
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-question .faq-toggle {
  font-size: 1.3rem;
  color: var(--accent-cyan);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.open .faq-question .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.2rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ─── Pricing Comparison ────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 680px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}

.pricing-card.featured {
  border-color: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
  position: relative;
}

.pricing-card.featured::before {
  content: "Recommended";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  color: #000;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.9rem;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pricing-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5em;
}

.pricing-price {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 1.5rem;
}

.pricing-features li {
  padding: 0.4rem 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li .check {
  color: var(--accent-green);
  font-weight: 700;
}

.pricing-features li .dash {
  color: var(--text-muted);
}

/* ─── Content Prose ─────────────────────────────────────────────── */
.prose {
  max-width: 720px;
  margin: 0 auto;
}

.prose h2 {
  margin-top: 2em;
  padding-top: 1.5em;
  border-top: 1px solid var(--border-subtle);
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.prose h3 {
  margin-top: 1.5em;
}

.prose ul, .prose ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}

.prose li {
  margin-bottom: 0.4em;
  color: var(--text-secondary);
}

.prose strong { color: var(--text-primary); }

.prose-callout {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1.2rem 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ─── Architecture Diagram (text-based) ─────────────────────────── */
.arch-diagram {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", "Consolas", monospace;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--accent-cyan);
  overflow-x: auto;
  white-space: pre;
  text-align: center;
  margin: 2rem 0;
}

/* ─── CTA Banner ────────────────────────────────────────────────── */
.cta-banner {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  margin-top: 3rem;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-green), transparent);
}

.cta-banner h2 { margin-bottom: 0.5em; }
.cta-banner p { color: var(--text-secondary); margin-bottom: 1.5em; }

/* ─── Footer ────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* ─── Utilities ─────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-accent { color: var(--accent-cyan); }
.text-green { color: var(--accent-green); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-nav);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .nav-links.open {
    max-height: 400px;
  }

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

  .nav-links a {
    display: block;
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links a::after {
    display: none;
  }

  .hero {
    padding: calc(var(--nav-height) + 2rem) 0 2rem;
  }

  .section {
    padding: 2.5rem 0;
  }

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

  .screenshots {
    grid-template-columns: repeat(3, 1fr);
  }

  .step {
    gap: 1rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .screenshots {
    grid-template-columns: repeat(2, 1fr);
    max-width: 360px;
  }

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

/* ─── Animations ────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ─── Accessibility ─────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}