@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --bg-obsidian: #07090e;
  --bg-trench: #0e1219;
  --bg-glass: rgba(14, 18, 25, 0.92);
  --bg-card: #121722;
  --bg-card-hover: #171e2c;
  --emerald-glow: #00ff9d;
  --emerald-dim: rgba(0, 255, 157, 0.12);
  --emerald-border: rgba(0, 255, 157, 0.3);
  --gold-beam: #ffb703;
  --gold-glow: rgba(255, 183, 3, 0.18);
  --gold-border: rgba(255, 183, 3, 0.35);
  --bronze-accent: #e0a96d;
  --text-main: #f0f4f8;
  --text-muted: #95a3b5;
  --font-heading: 'Chakra Petch', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
  --radius-lg: 14px;
  --radius-md: 6px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-hud: 0 10px 30px rgba(0, 0, 0, 0.75), 0 0 18px rgba(0, 255, 157, 0.12);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--bg-obsidian);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% -10%, #17201b 0%, #0d1217 50%, var(--bg-obsidian) 90%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--emerald-glow);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--gold-beam);
}

/* Header & Nav - Ultra Slim HUD Design */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 9, 14, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 255, 157, 0.2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.75), inset 0 -1px 0 rgba(0, 255, 157, 0.15);
}

.nav-container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #fff;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-logo svg {
  width: 22px;
  height: 22px;
  filter: drop-shadow(0 0 6px var(--emerald-glow));
}

.brand-logo .brand-badge {
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--emerald-glow);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald-glow);
  animation: pulse-hud 2s infinite ease-in-out;
  margin-left: 2px;
}

@keyframes pulse-hud {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.nav-wrapper {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: #fff;
  background: rgba(0, 255, 157, 0.06);
}

.nav-links a.active {
  color: var(--emerald-glow);
  background: rgba(0, 255, 157, 0.1);
  box-shadow: inset 0 0 0 1px var(--emerald-border);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--emerald-glow);
  box-shadow: 0 0 8px var(--emerald-glow);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.mobile-nav-toggle {
  display: none;
  background: rgba(0, 255, 157, 0.08);
  border: 1px solid var(--emerald-border);
  color: var(--emerald-glow);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  transition: var(--transition);
}

.mobile-nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--emerald-glow);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.mobile-nav-toggle.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.mobile-nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.mobile-nav-toggle.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 992px) {
  .mobile-nav-toggle {
    display: flex;
  }

  .nav-wrapper {
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: rgba(7, 9, 14, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--emerald-border);
    padding: 1rem 1.25rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    display: none;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.9);
  }

  .nav-wrapper.nav-open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .nav-links a {
    padding: 0.65rem 1rem;
    font-size: 0.88rem;
    width: 100%;
  }

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

.btn-hud {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--emerald-dim);
  border: 1px solid var(--emerald-glow);
  color: var(--emerald-glow);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 0 10px rgba(0, 255, 157, 0.2);
  white-space: nowrap;
}

.btn-hud:hover {
  background: var(--emerald-glow);
  color: var(--bg-obsidian);
  box-shadow: 0 0 20px var(--emerald-glow);
}

.btn-gold {
  border-color: var(--gold-beam);
  color: var(--gold-beam);
  background: var(--gold-glow);
  box-shadow: 0 0 10px rgba(255, 183, 3, 0.2);
}

.btn-gold:hover {
  background: var(--gold-beam);
  color: var(--bg-obsidian);
  box-shadow: 0 0 20px var(--gold-beam);
}

.btn-emerald {
  border-color: var(--emerald-glow);
  color: var(--emerald-glow);
  background: var(--emerald-dim);
  box-shadow: 0 0 10px rgba(0, 255, 157, 0.2);
}

.btn-emerald:hover {
  background: var(--emerald-glow);
  color: var(--bg-obsidian);
  box-shadow: 0 0 20px var(--emerald-glow);
}

/* Page Containers */
.page-wrapper {
  flex: 1;
}

.hero-section {
  padding: 3.5rem 1.5rem 3rem;
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 0.35rem 1.1rem;
  background: var(--emerald-dim);
  border: 1px solid var(--emerald-glow);
  border-radius: 20px;
  color: var(--emerald-glow);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  margin-bottom: 1.25rem;
  box-shadow: 0 0 12px rgba(0, 255, 157, 0.18);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.4rem;
  line-height: 1.1;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  background: linear-gradient(180deg, #ffffff 0%, #d1fae5 50%, #00ff9d 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  max-width: 820px;
  margin: 0 auto 2.25rem;
  font-size: 1.1rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-banner-image {
  margin-top: 3rem;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--emerald-border);
  box-shadow: 0 18px 45px rgba(0, 255, 157, 0.15);
}

.hero-banner-image img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 9, 14, 0.15) 0%, rgba(7, 9, 14, 0.88) 100%);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 1.75rem;
}

/* Grid & Cards */
.section-block {
  max-width: 1280px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.section-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-header p {
  color: var(--text-muted);
  max-width: 650px;
  margin: 0.5rem auto 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.hydro-card {
  background: var(--bg-card);
  border: 1px solid var(--emerald-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-hud);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hydro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--emerald-glow), var(--gold-beam), transparent);
  opacity: 0.8;
}

.hydro-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--emerald-glow);
  box-shadow: 0 14px 38px rgba(0, 255, 157, 0.2);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: #fff;
}

.card-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Media & Image Container Cards */
.card-media-box {
  width: 100%;
  height: 210px;
  border-radius: var(--radius-md);
  border: 1px solid var(--emerald-border);
  margin-bottom: 1.25rem;
  position: relative;
  overflow: hidden;
  background: #090e15;
}

.card-media-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hydro-card:hover .card-media-box img {
  transform: scale(1.05);
}

.tech-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(7, 9, 14, 0.92) 100%);
  display: flex;
  align-items: flex-end;
  padding: 0.85rem;
}

.tech-tag {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--emerald-glow);
  background: rgba(7, 9, 14, 0.9);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--emerald-glow);
  box-shadow: 0 0 8px rgba(0, 255, 157, 0.25);
}

/* Telemetry Stats Bar */
.telemetry-strip {
  background: rgba(14, 18, 25, 0.96);
  border-top: 1px solid var(--emerald-border);
  border-bottom: 1px solid var(--emerald-border);
  padding: 2.25rem 0;
  margin: 2.5rem 0;
  box-shadow: inset 0 0 25px rgba(0, 255, 157, 0.05);
}

.telemetry-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--emerald-glow);
  text-shadow: 0 0 10px rgba(0, 255, 157, 0.4);
}

.stat-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Interactive Calculator Module */
.calculator-module {
  background: var(--bg-card);
  border: 1px solid var(--emerald-glow);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-hud);
}

.form-group {
  margin-bottom: 1.35rem;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  color: var(--text-main);
  margin-bottom: 0.45rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 0.95rem;
  background: rgba(7, 9, 14, 0.85);
  border: 1px solid var(--emerald-border);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--emerald-glow);
  box-shadow: 0 0 10px rgba(0, 255, 157, 0.4);
}

/* Feature Showcase Box */
.showcase-image-frame {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--emerald-border);
  overflow: hidden;
  box-shadow: var(--shadow-hud);
  position: relative;
}

.showcase-image-frame img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  display: block;
}

/* Technical Briefing Modal Drawer System */
.briefing-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 11, 0.88);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.briefing-modal-backdrop.active {
  display: flex;
}

.briefing-modal-content {
  background: var(--bg-card);
  border: 1px solid var(--emerald-glow);
  border-radius: var(--radius-lg);
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9), 0 0 30px rgba(0, 255, 157, 0.25);
  position: relative;
}

.briefing-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: rgba(0, 255, 157, 0.1);
  border: 1px solid var(--emerald-glow);
  color: var(--emerald-glow);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
}

.briefing-close-btn:hover {
  background: var(--emerald-glow);
  color: var(--bg-obsidian);
}

/* Footer Specification */
.site-footer {
  background: #04060a;
  border-top: 1px solid var(--emerald-border);
  padding: 3.5rem 1.5rem 1.75rem;
  margin-top: auto;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-branding h3 {
  font-family: var(--font-heading);
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links h4,
.footer-legal-links h4,
.footer-company-details h4 {
  font-family: var(--font-heading);
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 1.1rem;
  text-transform: uppercase;
}

.footer-links ul,
.footer-legal-links ul {
  list-style: none;
}

.footer-links li,
.footer-legal-links li {
  margin-bottom: 0.55rem;
}

.footer-links a,
.footer-legal-links a {
  color: var(--text-muted);
}

.footer-links a:hover,
.footer-legal-links a:hover {
  color: var(--emerald-glow);
}

.footer-company-details p {
  margin-bottom: 0.45rem;
  line-height: 1.4;
}

.footer-bottom-bar {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.82rem;
}

/* Legal Documents Styling */
.legal-content-card {
  background: var(--bg-card);
  border: 1px solid var(--emerald-border);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow-hud);
}

.legal-content-card h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  color: #fff;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.legal-content-card h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--emerald-glow);
  margin: 2rem 0 0.75rem;
}

.legal-content-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.7;
}

.legal-content-card ul {
  color: var(--text-muted);
  margin: 0.5rem 0 1.25rem 1.5rem;
  line-height: 1.7;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .telemetry-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: 1fr; }
  .legal-content-card { padding: 1.75rem 1.25rem; }
}