:root {
  --navy: #0a1628;
  --navy-light: #1a2d4a;
  --navy-lighter: #2a4066;
  --cyan: #00d4ff;
  --cyan-light: #5ce1ff;
  --cyan-dark: #00a8cc;
  --cyan-glow: rgba(0, 212, 255, 0.3);
  --white: #ffffff;
  --gray-100: #f0f4f8;
  --gray-200: #d9e2ec;
  --gray-300: #bcccdc;
  --gray-400: #829ab1;
  
  --font-display: 'Rubik', sans-serif;
  --font-body: 'Heebo', sans-serif;
  
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50px;
  
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--gray-100);
  background: var(--navy);
  overflow-x: hidden;
}

/* Visually Hidden (for screen readers) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan);
  color: var(--navy);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 500;
  z-index: 10000;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-sm);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: 1200px;
  margin-inline: auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--white);
}

.logo-icon {
  width: 40px;
  height: 40px;
  color: var(--cyan);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-list a {
  color: var(--gray-200);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-list a:hover,
.nav-list a:focus {
  color: var(--cyan);
}

.nav-cta {
  background: var(--cyan);
  color: var(--navy) !important;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-weight: 600 !important;
  direction: ltr;
}

.nav-cta:hover,
.nav-cta:focus {
  background: var(--white) !important;
  color: var(--navy) !important;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  background: transparent;
  border: none;
  cursor: pointer;
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--navy-light);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-md);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-nav-list a {
  display: block;
  color: var(--white);
  text-decoration: none;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mobile-nav-list a:hover,
.mobile-nav-list a:focus {
  background: rgba(255, 255, 255, 0.05);
}

.mobile-phone-link {
  background: rgba(0, 212, 255, 0.1) !important;
  color: var(--cyan) !important;
  font-weight: 500;
  text-align: center;
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
}

/* Hero */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: var(--space-xl);
  padding: calc(80px + var(--space-xl)) var(--space-md) var(--space-xl);
  max-width: 1400px;
  margin-inline: auto;
}

.hero-content {
  padding-inline-start: var(--space-lg);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--cyan-light);
  margin-bottom: var(--space-md);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  margin-bottom: var(--space-md);
}

.title-line {
  display: block;
}

.title-accent {
  color: var(--cyan);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--gray-300);
  max-width: 480px;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-fast);
}

.btn:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--cyan);
  color: var(--navy);
}

.btn-primary:hover {
  background: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 10px 40px var(--cyan-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 3px;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

.btn-icon-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon-arrow {
  transform: translateX(-4px);
}

.btn-full {
  width: 100%;
}

/* Hero Visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.pipe-system {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
}

.pipe-svg {
  width: 100%;
  height: 100%;
}

.pipe {
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
  animation: drawPipe 2s ease forwards;
}

.pipe-1 { animation-delay: 0s; }
.pipe-2 { animation-delay: 0.5s; }
.pipe-3 { animation-delay: 1s; }

@keyframes drawPipe {
  to { stroke-dashoffset: 0; }
}

.joint {
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

.pipe-svg .joint:nth-child(4) { animation-delay: 0.5s; }
.pipe-svg .joint:nth-child(5) { animation-delay: 1s; }
.pipe-svg .joint:nth-child(6) { animation-delay: 1.5s; }

@keyframes fadeIn {
  to { opacity: 1; }
}

.water-drop {
  opacity: 0;
}

.drop-1 {
  animation: flowDrop1 3s ease-in-out 2s infinite;
}

.drop-2 {
  animation: flowDrop2 3s ease-in-out 2.5s infinite;
}

.drop-3 {
  animation: flowDrop3 3s ease-in-out 3s infinite;
}

@keyframes flowDrop1 {
  0% { opacity: 0; transform: translate(50px, 200px); }
  10% { opacity: 1; }
  50% { opacity: 1; transform: translate(250px, 100px); }
  90% { opacity: 1; }
  100% { opacity: 0; transform: translate(350px, 200px); }
}

@keyframes flowDrop2 {
  0% { opacity: 0; transform: translate(50px, 200px); }
  10% { opacity: 1; }
  50% { opacity: 1; transform: translate(150px, 200px); }
  90% { opacity: 1; }
  100% { opacity: 0; transform: translate(150px, 300px); }
}

@keyframes flowDrop3 {
  0% { opacity: 0; transform: translate(150px, 300px); }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { opacity: 0; transform: translate(300px, 300px); }
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: calc(80px + var(--space-lg));
  }
  
  .hero-content {
    padding-inline-start: 0;
  }
  
  .hero-subtitle {
    margin-inline: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .pipe-system {
    max-width: 280px;
  }
}

/* Section Styles */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-header-start {
  text-align: start;
}

.section-tag {
  display: inline-block;
  color: var(--cyan-light);
  font-size: 0.9375rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-sm);
}

.section-title {
  color: var(--white);
}

/* Services */
.services {
  padding: var(--space-2xl) 0;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.service-card {
  position: relative;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  grid-column: span 4;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.service-card-featured {
  grid-column: span 6;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 168, 204, 0.05) 100%);
  border-color: rgba(0, 212, 255, 0.2);
}

.service-card-wide {
  grid-column: span 6;
}

.service-card-half {
  grid-column: span 6;
}

@media (max-width: 1024px) {
  .service-card {
    grid-column: span 6;
  }
  
  .service-card-featured,
  .service-card-wide,
  .service-card-half {
    grid-column: span 12;
  }
}

@media (max-width: 600px) {
  .service-card,
  .service-card-featured,
  .service-card-wide,
  .service-card-half {
    grid-column: span 12;
  }
}

.card-badge {
  position: absolute;
  top: var(--space-md);
  inset-inline-start: var(--space-md);
  background: var(--cyan);
  color: var(--navy);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--cyan);
  margin-bottom: var(--space-md);
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card-title {
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.card-text {
  color: var(--gray-300);
  font-size: 0.9375rem;
  max-width: 50ch;
}

/* Why Us */
.why-us {
  padding: var(--space-2xl) 0;
  background: var(--navy-light);
}

.why-us-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.benefits-list {
  list-style: none;
  margin-top: var(--space-lg);
}

.benefit-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.benefit-item:last-child {
  border-bottom: none;
}

.benefit-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--cyan);
  opacity: 0.4;
  min-width: 48px;
}

.benefit-content h3 {
  color: var(--white);
  margin-bottom: 4px;
  font-weight: 500;
}

.benefit-content p {
  color: var(--gray-300);
  font-size: 0.9375rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.stat-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
  transition: border-color var(--transition-base);
}

.stat-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
}

.stat-card-highlight {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 168, 204, 0.05) 100%);
  border-color: rgba(0, 212, 255, 0.2);
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--cyan);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-value-text {
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.stat-unit {
  font-size: 0.5em;
  font-weight: 400;
  margin-inline-start: 0.1em;
}

.stat-label {
  color: var(--gray-300);
  font-size: 0.9375rem;
}

@media (max-width: 900px) {
  .why-us-layout {
    grid-template-columns: 1fr;
  }
  
  .why-us-visual {
    order: -1;
  }
}

/* Contact */
.contact {
  padding: var(--space-2xl) 0;
  background: var(--navy);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-text {
  color: var(--gray-300);
  margin-top: var(--space-md);
  margin-bottom: var(--space-lg);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  margin: calc(var(--space-sm) * -1);
  transition: background var(--transition-fast);
}

.contact-method-phone:hover,
.contact-method-phone:focus {
  background: rgba(0, 212, 255, 0.1);
}

.contact-method-phone:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}

.method-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}

.method-icon svg {
  width: 24px;
  height: 24px;
}

.method-label {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-400);
}

.method-value {
  display: block;
  color: var(--white);
  font-weight: 500;
}

.contact-method-phone .method-value {
  font-size: 1.25rem;
  direction: ltr;
  display: inline-block;
}

/* Form */
.contact-form {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-200);
  margin-bottom: var(--space-xs);
}

.label-optional {
  font-weight: 400;
  color: var(--gray-400);
}

.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: var(--gray-400);
}

.form-input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-glow);
}

.form-input.error {
  border-color: #ff4757;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23bcccdc' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left var(--space-sm) center;
  background-size: 20px;
  padding-inline-end: var(--space-xl);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  display: none;
  font-size: 0.8125rem;
  color: #ff6b7a;
  margin-top: 4px;
}

.form-group.has-error .form-error {
  display: block;
}

.form-group.has-error .form-input {
  border-color: #ff4757;
}

.form-note {
  text-align: center;
  font-size: 0.9375rem;
  color: var(--gray-300);
  margin-top: var(--space-sm);
}

@media (max-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

/* Footer */
.site-footer {
  background: var(--navy-light);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: var(--space-md);
}

.footer-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--white);
  font-weight: 500;
}

.footer-logo {
  width: 32px;
  height: 32px;
  color: var(--cyan);
}

.footer-tagline {
  color: var(--gray-400);
  font-size: 0.875rem;
}

.footer-contact {
  text-align: start;
}

.footer-phone {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  direction: ltr;
  transition: color var(--transition-fast);
}

.footer-phone:hover,
.footer-phone:focus {
  color: var(--white);
}

.footer-availability {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-400);
}

.footer-bottom {
  text-align: center;
}

.footer-copy {
  color: var(--gray-400);
  font-size: 0.875rem;
}

@media (max-width: 600px) {
  .footer-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .footer-contact {
    text-align: center;
  }
}

/* Reveal Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Success Message */
.form-success {
  text-align: center;
  padding: var(--space-xl);
}

.form-success-icon {
  width: 64px;
  height: 64px;
  color: var(--cyan);
  margin-bottom: var(--space-md);
}

.form-success h3 {
  color: var(--white);
  margin-bottom: var(--space-xs);
}

.form-success p {
  color: var(--gray-300);
}