/* ========================================
   CLOSED LOOP SECURITY LABS
   Site Stylesheet
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,700;1,400&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* --- CSS Variables --- */
:root {
  --bg-primary: #08080F;
  --bg-secondary: #0E0E1A;
  --bg-card: #111120;
  --bg-card-hover: #16162A;
  --red: #EF4444;
  --red-glow: rgba(239, 68, 68, 0.3);
  --blue: #3B82F6;
  --blue-glow: rgba(59, 130, 246, 0.3);
  --purple: #8B5CF6;
  --purple-glow: rgba(139, 92, 246, 0.25);
  --text-primary: #F0F0F5;
  --text-secondary: #A0A0B8;
  --text-muted: #6B6B80;
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(139, 92, 246, 0.3);
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1200px;
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--purple); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--blue); }

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

/* --- Noise Texture Overlay --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(8, 8, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-inner {
  max-width: var(--max-width);
  width: 100%;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: 1px;
}

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

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  transition: color 0.2s;
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--purple), var(--blue));
  border-radius: 1px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

.section-sm {
  padding: 3rem 0;
}

/* --- Hero (Home) --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  max-width: 100%;
  opacity: 0.45;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 70% 60% at center, black 40%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at center, black 40%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-logo {
  width: 380px;
  max-width: 80vw;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s ease-out 0.1s backwards;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--red), var(--purple), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.4rem);
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 2rem;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.stat {
  text-align: center;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--red), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 0.25rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--purple), var(--blue));
  color: white;
  box-shadow: 0 4px 20px var(--purple-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--purple-glow);
  color: white;
}

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

.btn-outline:hover {
  border-color: var(--purple);
  color: var(--text-primary);
  background: rgba(139, 92, 246, 0.05);
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 2rem;
  animation: fadeInUp 0.8s ease-out 0.5s backwards;
}

/* --- Section Headers --- */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--purple);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

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

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

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

.card-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Research Table --- */
.research-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
}

.research-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.research-table thead {
  background: var(--bg-secondary);
}

.research-table th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.research-table td {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.research-table tr:last-child td {
  border-bottom: none;
}

.research-table tr:hover td {
  background: rgba(139, 92, 246, 0.03);
}

.defense-rate {
  font-family: var(--font-mono);
  font-weight: 700;
}

.rate-high { color: #22C55E; }
.rate-mid { color: #F59E0B; }
.rate-low { color: #EF4444; }

/* --- Blog Cards --- */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
}

.blog-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.blog-card-body {
  padding: 1.5rem 2rem 2rem;
}

.blog-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 0.75rem;
}

.blog-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 1px;
  margin-right: 6px;
  margin-top: 0.75rem;
}

.tag-red { background: rgba(239, 68, 68, 0.15); color: var(--red); }
.tag-blue { background: rgba(59, 130, 246, 0.15); color: var(--blue); }
.tag-purple { background: rgba(139, 92, 246, 0.15); color: var(--purple); }

/* --- CLAP Protocol Layers --- */
.layer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.layer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  position: relative;
  transition: all 0.3s;
}

.layer-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.layer-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  opacity: 0.08;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}

.layer-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.layer-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* --- Services --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem;
  transition: all 0.3s;
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.25rem;
}

.service-icon.red { background: rgba(239, 68, 68, 0.12); }
.service-icon.blue { background: rgba(59, 130, 246, 0.12); }
.service-icon.purple { background: rgba(139, 92, 246, 0.12); }

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.cert-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.cert-list li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.rig-spec {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  line-height: 2;
}

.rig-spec .label {
  color: var(--text-muted);
}

.rig-spec .value {
  color: var(--purple);
}

/* --- Contact Form --- */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px var(--purple-glow);
}

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

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  margin-top: 4rem;
}

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

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

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

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

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

/* --- Divider --- */
.gradient-divider {
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--purple), var(--blue));
  border: none;
  margin: 2rem auto;
  border-radius: 1px;
}

/* --- Code blocks --- */
.code-block {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.code-block .keyword { color: var(--purple); }
.code-block .string { color: #22C55E; }
.code-block .comment { color: var(--text-muted); }

/* --- Page Header (non-home) --- */
.page-header {
  padding: calc(var(--nav-height) + 4rem) 0 3rem;
  text-align: center;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.page-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.6s ease-out backwards;
}

/* --- Scroll reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(8, 8, 15, 0.97);
    backdrop-filter: blur(20px);
    padding: 1.5rem 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-toggle { display: block; }
  .hero-stats { gap: 1.5rem; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .card-grid, .layer-grid, .services-grid { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
}