/* ==========================================================================
   TERNS TECHNOLOGY - ENTERPRISE PRODUCT ENGINEERING STUDIO
   THEME: ULTRA-MODERN LUXE DARK GLASSMORPHISM
   Typography: Outfit (Headings), Inter (Body)
   Colors: Obsidian Navy (#0b0f19), Electric Cyan (#00f0ff), Cobalt (#3b82f6), Emerald (#10b981)
   ========================================================================== */

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

:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(18, 26, 43, 0.7);
  --bg-card-hover: rgba(28, 40, 66, 0.85);
  --bg-glass: rgba(13, 19, 33, 0.8);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 240, 255, 0.3);
  
  --primary-cyan: #00f0ff;
  --primary-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.15);
  
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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;
  -webkit-font-smoothing: antialiased;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

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

.gradient-amber {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-amber) 70%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* LAYOUT UTILITIES */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-padding {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  color: var(--primary-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.badge-amber {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--accent-amber);
}

.section-title {
  font-size: 2.75rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.section-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-cyan) 0%, var(--primary-blue) 100%);
  color: #0b0f19;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.5);
  background: linear-gradient(135deg, #33f3ff 0%, #2563eb 100%);
}

.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(0, 240, 255, 0.1);
  border-color: var(--primary-cyan);
  color: #ffffff;
  transform: translateY(-2px);
}

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-smooth);
  background: rgba(11, 15, 25, 0.65);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(11, 15, 25, 0.92);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  background: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  backdrop-filter: none;
  position: relative;
  z-index: 999999;
  transition: var(--transition-fast);
}

.logo:hover {
  opacity: 0.9;
  background: transparent;
  border: none;
  box-shadow: none;
}

.logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: none;
  position: relative;
  z-index: 999999;
  mix-blend-mode: normal;
  opacity: 1;
}

.navbar.scrolled .logo-img {
  height: 34px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-cyan);
}

/* HERO SECTION */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 140px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.15) 0%, rgba(11, 15, 25, 1) 70%);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 0;
  filter: contrast(1.1) brightness(0.9);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(11, 15, 25, 0.4) 0%, rgba(11, 15, 25, 0.85) 60%, rgba(11, 15, 25, 1) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.hero-headline {
  font-size: 3.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  line-height: 1.1;
}

.hero-subhead {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-features-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #e2e8f0;
}

.hero-feature-item i {
  color: var(--primary-cyan);
  font-size: 1.1rem;
}

/* HERO LIVE INFRASTRUCTURE CARD */
.hero-visual-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 24px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  position: relative;
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.telemetry-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: 0.4; }
  100% { transform: scale(1); opacity: 1; }
}

.env-switchers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.env-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

.env-btn:hover, .env-btn.active {
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--primary-cyan);
  color: #ffffff;
}

.env-btn i {
  font-size: 1.3rem;
  margin-bottom: 4px;
  color: var(--primary-cyan);
}

.env-btn span {
  font-size: 0.85rem;
  font-weight: 700;
}

.env-btn small {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.live-telemetry-box {
  background: rgba(0, 0, 0, 0.4);
  border-radius: 12px;
  padding: 16px;
  font-size: 0.88rem;
}

.telemetry-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.telemetry-val {
  color: #ffffff;
  font-weight: 600;
}

/* 3 PILLARS SECTION */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px 24px;
  transition: var(--transition-smooth);
  position: relative;
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  transform: translateY(-8px);
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.pillar-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-cyan);
  font-size: 1.6rem;
  margin-bottom: 24px;
}

.pillar-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.pillar-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.pillar-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.pillar-link {
  color: var(--primary-cyan);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
}

.pillar-link:hover {
  gap: 10px;
}

/* ARCHITECTURE DEMO SHOWCASE */
.architecture-showcase {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  margin-top: 60px;
  padding: 40px;
}

.arch-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
  overflow-x: auto;
}

.arch-tab {
  padding: 12px 24px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.arch-tab:hover, .arch-tab.active {
  background: rgba(0, 240, 255, 0.1);
  border-color: var(--primary-cyan);
  color: #ffffff;
}

.arch-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.arch-info h3 {
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.arch-info p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.arch-list {
  list-style: none;
  margin-bottom: 30px;
}

.arch-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  color: #e2e8f0;
}

.arch-list li i {
  color: var(--primary-cyan);
  font-size: 1.2rem;
  margin-top: 2px;
}

.arch-image-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
}

.arch-image-wrap img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
}

/* CLOUD ECOSYSTEM SECTION (AWS, Azure, GCP) */
.cloud-ecosystem {
  background: radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.08) 0%, rgba(11, 15, 25, 1) 70%);
}

.cloud-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.cloud-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition-smooth);
  cursor: pointer;
}

.cloud-card:hover, .cloud-card.active {
  transform: translateY(-6px);
  border-color: var(--primary-cyan);
  box-shadow: var(--shadow-glow);
  background: rgba(22, 34, 58, 0.9);
}

.cloud-logo-box {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.cloud-card-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

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

.cloud-detail-box {
  margin-top: 40px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
}

.cloud-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.cloud-spec-item {
  background: rgba(0, 0, 0, 0.3);
  padding: 20px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.cloud-spec-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-cyan);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.cloud-spec-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* FEATURED WORKS / CASE STUDIES */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.case-img-wrap {
  height: 220px;
  position: relative;
  overflow: hidden;
}

.case-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.case-card:hover .case-img-wrap img {
  transform: scale(1.05);
}

.case-body {
  padding: 24px;
}

.case-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.case-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.case-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.case-metric {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 700;
  color: var(--accent-amber);
  font-size: 0.9rem;
}

/* CONTACT & RFP PORTAL */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: flex-start;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-cyan);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 36px;
  backdrop-filter: blur(16px);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(11, 15, 25, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* FOOTER */
.footer {
  background: #070a12;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h5 {
  font-size: 1rem;
  color: #ffffff;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
  }
  .hero-headline {
    font-size: 3rem;
  }
  .pillars-grid, .cloud-cards-grid, .cases-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hero-headline {
    font-size: 2.3rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .arch-content, .cloud-detail-grid {
    grid-template-columns: 1fr;
  }
}