/* ==========================================================================
   COBA TECH - Enterprise Cloud & Edge AI Infrastructure Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500;600&family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --bg-dark: #07090e;
  --bg-card: rgba(15, 23, 42, 0.65);
  --bg-card-hover: rgba(30, 41, 59, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(56, 189, 248, 0.3);
  
  --primary: #00f2fe;
  --primary-glow: rgba(0, 242, 254, 0.25);
  --secondary: #4facfe;
  --accent: #a855f7;
  --accent-glow: rgba(168, 85, 247, 0.25);
  --success: #10b981;
  --warning: #f59e0b;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  /* Fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'Fira Code', monospace;
  
  /* Layout */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-glow: 0 0 30px rgba(0, 242, 254, 0.15);
}

/* Reset & Global */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* Background Glowing Elements */
.bg-glow-container {
  position: fixed;
  width: 100vw;
  height: 100vh;
  top: 0;
  left: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-glow-1 {
  position: absolute;
  top: -10%;
  left: 15%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(80px);
}

.bg-glow-2 {
  position: absolute;
  top: 40%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
  filter: blur(90px);
}

.bg-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.6;
}

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

.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, var(--primary) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-alt {
  background: linear-gradient(135deg, var(--primary) 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.825rem;
  font-weight: 600;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid var(--border-highlight);
  color: var(--primary);
  margin-bottom: 1rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-tag .pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.section-title-wrap {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #000;
  font-weight: 700;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 242, 254, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Announcement Bar */
.top-announcement {
  background: linear-gradient(90deg, rgba(0, 242, 254, 0.15), rgba(168, 85, 247, 0.15));
  border-bottom: 1px solid rgba(0, 242, 254, 0.2);
  padding: 0.5rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
}

.top-announcement a {
  color: var(--primary);
  text-decoration: underline;
  margin-left: 0.5rem;
  font-weight: 600;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 14, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-weight: 900;
  font-size: 1.25rem;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.brand-name span {
  color: var(--primary);
}

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4rem 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content h1 {
  font-family: var(--font-heading);
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.trust-badges {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.trust-item svg {
  color: var(--primary);
  width: 18px;
  height: 18px;
}

/* Hero Dashboard Card / Graphic */
.hero-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), var(--shadow-glow);
  position: relative;
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.dashboard-status-tag {
  font-size: 0.75rem;
  font-family: var(--font-code);
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.hero-banner-img {
  width: 100%;
  border-radius: var(--radius-md);
  display: block;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
}

.live-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.metric-mini-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  text-align: center;
}

.metric-mini-box .val {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary);
}

.metric-mini-box .lbl {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Logos Strip */
.logos-section {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  background: rgba(15, 23, 42, 0.3);
}

.logos-title {
  text-align: center;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 2rem;
  font-weight: 600;
}

.logos-flex {
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 2rem;
  opacity: 0.7;
}

.logo-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: opacity 0.2s ease;
}

.logo-item:hover {
  opacity: 1;
  color: var(--text-main);
}

/* Products Section */
.products-section {
  padding: 6rem 0;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

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

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 10px 30px rgba(0, 242, 254, 0.1);
  background: var(--bg-card-hover);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.product-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.product-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.feature-list li svg {
  color: var(--success);
  width: 14px;
  height: 14px;
}

/* Code Developer Sandbox */
.developer-section {
  padding: 6rem 0;
  background: rgba(15, 23, 42, 0.4);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.code-window {
  background: #0b0f19;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.code-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
  padding: 0 1rem;
}

.code-tabs {
  display: flex;
  gap: 0.5rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.85rem 1.25rem;
  font-family: var(--font-code);
  font-size: 0.85rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: rgba(0, 242, 254, 0.05);
}

.copy-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  font-size: 0.75rem;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.1);
}

.code-body {
  padding: 1.5rem;
  font-family: var(--font-code);
  font-size: 0.9rem;
  color: #e2e8f0;
  overflow-x: auto;
  line-height: 1.6;
}

.code-body .kw { color: #f472b6; }
.code-body .str { color: #a3e635; }
.code-body .fn { color: #38bdf8; }
.code-body .cm { color: #64748b; font-style: italic; }

.run-test-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  background: rgba(0, 0, 0, 0.4);
  border-top: 1px solid var(--border-color);
  font-family: var(--font-code);
  font-size: 0.85rem;
}

.test-output {
  color: var(--success);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Architecture & Live Ping */
.network-section {
  padding: 6rem 0;
}

.network-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.node-status-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.flag-icon {
  font-size: 1.5rem;
}

.node-name {
  font-weight: 600;
  font-size: 1rem;
}

.node-region {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.node-ping {
  text-align: right;
  font-family: var(--font-code);
}

.ping-val {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.ping-lbl {
  font-size: 0.7rem;
  color: var(--success);
}

/* Pricing Section */
.pricing-section {
  padding: 6rem 0;
  background: rgba(15, 23, 42, 0.2);
}

.billing-toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  font-weight: 600;
}

.switch {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 34px;
  transition: 0.3s;
  border: 1px solid var(--border-color);
}

.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--primary);
  border-radius: 50%;
  transition: 0.3s;
}

input:checked + .slider:before {
  transform: translateX(24px);
}

.discount-badge {
  background: rgba(168, 85, 247, 0.15);
  color: var(--accent);
  border: 1px solid rgba(168, 85, 247, 0.3);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: 0 0 35px rgba(0, 242, 254, 0.15);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.8) 0%, rgba(0, 242, 254, 0.05) 100%);
}

.featured-label {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.25rem 1rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.plan-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.plan-price {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.plan-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
}

.plan-features li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-features li svg {
  color: var(--primary);
  width: 16px;
  height: 16px;
}

/* Team / Credibility Section */
.team-section {
  padding: 6rem 0;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

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

.avatar-placeholder {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  margin: 0 auto 1.25rem auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  color: #000;
  border: 3px solid rgba(255, 255, 255, 0.1);
}

.member-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
}

.member-role {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.member-bio {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* CTA Bottom Banner */
.cta-banner {
  padding: 5rem 0;
}

.cta-box {
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
  backdrop-filter: blur(20px);
}

.cta-box h2 {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-box p {
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 2rem auto;
  font-size: 1.1rem;
}

/* Footer */
footer {
  background: #030509;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  color: var(--text-dim);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  color: var(--text-main);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-heading);
}

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

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  font-size: 0.85rem;
}

/* Responsive Rules */
@media (max-width: 992px) {
  .hero-grid, .products-grid, .network-grid, .pricing-grid, .team-grid {
    grid-template-columns: 1fr;
  }
  .hero-content h1 {
    font-size: 2.5rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
}