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

:root {
  /* Color System */
  --clr-turquoise: #00B8B0;
  --clr-black: #111111;
  --clr-white: #F1F5F9;
  --clr-light-grey: #E2E8F0;
  --clr-dark-charcoal: #1E1E1E;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
  
  /* Spacing & Layout */
  --section-padding: 120px 5%;
  --max-width: 1400px;
}

/* Brand name contrast based on navbar background */
.navbar.dark-bg .brand-name { color: var(--clr-white) !important; }
.navbar.light-bg .brand-name { color: var(--clr-black) !important; }

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

body {
  font-family: var(--font-body);
  color: var(--clr-dark-charcoal);
  background-color: var(--clr-white);
  line-height: 1.6;
  font-size: 14px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--clr-black);
  line-height: 1.2;
}

h1 {
  font-size: clamp(3rem, 5vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

h3 {
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 500;
}

p {
  color: var(--clr-dark-charcoal);
  max-width: 70ch;
  margin-bottom: 1.5rem;
  font-weight: 400;
  font-size: 1.125rem;
  text-align: justify;
}

.text-light {
  color: rgba(255, 255, 255, 0.8);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

section {
  padding: var(--section-padding);
}

.bg-black {
  background-color: var(--clr-black) !important;
  color: var(--clr-white);
}
.bg-black h1, .bg-black h2, .bg-black h3 {
  color: var(--clr-white);
}

.bg-grey {
  background-color: var(--clr-light-grey);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  border-radius: 0; /* Minimal, sharp edges */
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--clr-black);
  color: var(--clr-white);
}

.btn-primary:hover {
  background-color: var(--clr-turquoise);
  color: var(--clr-white);
}

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

.btn-secondary:hover {
  background-color: var(--clr-black);
  color: var(--clr-white);
}

.btn-light {
  background-color: transparent;
  color: var(--clr-white);
  border: 1px solid var(--clr-white);
}

.btn-light:hover {
  background-color: var(--clr-white);
  color: var(--clr-black);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 24px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  transition: all 0.3s ease;
  background-color: transparent;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 16px 5%;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
}

.navbar.scrolled .nav-links a {
  color: var(--clr-black);
}

.navbar.scrolled .logo {
  color: var(--clr-black);
}

.navbar.light-theme .nav-links a,
.navbar.light-theme .logo {
  color: var(--clr-black);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  line-height: 1;
  z-index: 1001;
  text-decoration: none;
}

.logo img {
  background: transparent;
  mix-blend-mode: normal;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
}

.brand-name {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  line-height: 1;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--clr-white);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.brand-sub {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.52rem;
  color: rgba(200, 210, 220, 0.85);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.navbar.scrolled .brand-title,
.navbar.light-theme .brand-title {
  color: var(--clr-black);
}

.navbar.scrolled .brand-sub,
.navbar.light-theme .brand-sub {
  color: rgba(50, 60, 70, 0.75);
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--clr-white);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--clr-turquoise);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a:hover {
  color: var(--clr-turquoise) !important;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--clr-white);
  transition: all 0.3s ease;
}

.navbar.scrolled .menu-toggle span,
.navbar.light-theme .menu-toggle span {
  background-color: var(--clr-black);
}

@media (max-width: 992px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--clr-black);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transition: right 0.5s cubic-bezier(0.77, 0, 0.175, 1);
  }

  .nav-links.active {
    right: 0;
  }
  
  .nav-links.active a {
    color: var(--clr-white) !important;
    font-size: 1.5rem;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background-color: var(--clr-white);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background-color: var(--clr-white);
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background-color: var(--clr-black);
  overflow: hidden;
  padding-top: 80px;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 100%);
  z-index: 1;
}

.hero-image {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  padding: 0 1.5rem;
  text-align: center;
}

.hero-content h1 {
  color: var(--clr-white) !important;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 0.6s;
}

.hero-content p, .hero-content .hero-subtitle {
  color: var(--clr-white) !important;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
}

.hero-content p {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 0.9s;
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--clr-turquoise);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
    display: block;
    text-align: center;
    font-size: 0.875rem;
}

.hero-content .hero-subtitle {
  position: relative;
  display: inline-block;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 0.3s;
}

.hero-content .hero-subtitle::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 2px;
  background-color: var(--clr-white);
  border-radius: 2px;
  opacity: 0.8;
}

.hero .btn-group {
  display: flex;
  gap: 16px;
  margin-top: 40px;
  justify-content: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.8s ease forwards 1.2s;
}

@media (max-width: 576px) {
  .hero .btn-group {
    flex-direction: column;
  }
}

/* Stats Section */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr; /* 2 columns to center the 3rd below */
  gap: 40px;
  border-top: 1px solid rgba(0,0,0,0.1);
  padding-top: 60px;
  justify-items: center;
  text-align: center;
}

.stat-item:last-child:nth-child(odd) {
  grid-column: 1 / -1; /* spans across both columns */
  justify-self: center;
}

.stat-item h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 3.5rem;
  color: var(--clr-black);
  margin-bottom: 8px;
}

.stat-item h3 span {
  color: var(--clr-turquoise);
}

.stat-item p {
  font-size: 1rem;
  color: var(--clr-dark-charcoal);
  margin: 0;
}

/* Intro Section */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.intro-content .label {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--clr-turquoise);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: block;
  font-size: 0.875rem;
}

.intro-image {
  position: relative;
  aspect-ratio: 4/5;
  background-color: var(--clr-light-grey);
}

.intro-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 992px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

/* Services Grid */
.services-header {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  margin-bottom: 60px;
  gap: 24px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 32px;
}

.service-card {
  background-color: var(--clr-light-grey);
  padding: 48px 40px;
  transition: all 0.4s ease;
  border-top: 3px solid transparent;
}

.service-card:hover {
  background-color: var(--clr-white);
  box-shadow: 0 20px 40px rgba(0,0,0,0.06);
  border-top-color: var(--clr-turquoise);
  transform: translateY(-5px);
}

.service-icon {
  margin-bottom: 24px;
  color: var(--clr-black);
}

.service-card:hover .service-icon {
  color: var(--clr-turquoise);
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.service-card p {
  font-size: 1rem;
  color: #555;
  margin-bottom: 32px;
}

.service-link {
  font-weight: 500;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.service-link svg {
  transition: transform 0.3s ease;
}

.service-link:hover {
  color: var(--clr-turquoise);
}

.service-link:hover svg {
  transform: translateX(5px);
}

@media (max-width: 768px) {
  .services-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.project-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background-color: var(--clr-black);
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 1, 0.3, 1), opacity 0.5s ease;
  opacity: 0.8;
}

.project-card:hover img {
  transform: scale(1.05);
  opacity: 0.4;
}

.project-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 40px;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.2, 1, 0.3, 1);
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.project-card:hover .project-info {
  transform: translateY(0);
  opacity: 1;
}

.project-info h3 {
  color: var(--clr-white);
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.project-category {
  color: var(--clr-turquoise);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
}

/* Footer */
footer {
  background-color: var(--clr-black);
  color: var(--clr-white);
  padding: 80px 5% 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-bottom: 24px;
}

.footer-logo .brand-title {
  color: var(--clr-white);
}

.footer-logo .brand-sub {
  color: rgba(200, 210, 220, 0.75);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  margin-bottom: 80px;
}

.footer-brand h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.footer-brand h2 span {
  color: var(--clr-turquoise);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 1rem;
  max-width: 320px;
  line-height: 1.6;
}

.footer-links h4 {
  color: var(--clr-white);
  font-size: 1.125rem;
  margin-bottom: 24px;
}

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

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
  transition: color 0.3s ease;
  position: relative;
  display: inline-block;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--clr-turquoise);
  transition: width 0.3s ease;
}

.footer-links a:hover::after {
  width: 100%;
}

.footer-links a:hover {
  color: var(--clr-white);
}

.footer-contact li {
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 16px;
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.footer-contact li svg {
  color: var(--clr-turquoise);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--clr-white);
  border-radius: 50%;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background-color: var(--clr-turquoise);
  border-color: var(--clr-turquoise);
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    padding: 24px 0;
  }
}

@media (max-width: 992px) {
  .contact-grid {
    gap: 60px;
    padding: 60px 0;
  }
}

/* Animations */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 1s cubic-bezier(0.2, 1, 0.3, 1);
}

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

/* Inner Page Header */
.page-header {
  padding: 160px 5% 80px;
  background-color: var(--clr-light-grey);
  text-align: center;
}

.page-header h1 {
  margin-bottom: 1rem;
  text-align: center;
}

.page-header p {
  font-size: 1.25rem;
  color: #555;
  margin: 0 auto;
  max-width: 800px;
  text-align: center;
}

/* About Page Specific */
.about-image {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background-color: #ddd;
}

/* Contact Form */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--clr-black);
}

.form-control {
  width: 100%;
  padding: 20px;
  border: 1px solid #ddd;
  background-color: var(--clr-light-grey);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-black);
  background-color: var(--clr-white);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}

/* Professional Mobile Centered Layout & Spacing Enhancements */
@media (max-width: 768px) {
  /* Give more breathing room */
  :root {
    --section-padding: 80px 8%;
  }

  /* Center Hero Content */
  .hero-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .hero-content h1 {
    font-size: clamp(2.5rem, 8vw, 3rem);
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  /* Center Intro and Stats (Number Sliders) */
  .intro-content {
    text-align: center;
  }

  .intro-content p {
    margin-left: auto;
    margin-right: auto;
  }
  
  .stats-grid {
    justify-items: center;
    text-align: center;
    gap: 40px;
    padding-top: 40px;
    grid-template-columns: 1fr; /* Stack numbers nicely */
  }

  /* Center Services */
  .services-header {
    text-align: center;
    align-items: center;
  }

  .service-card {
    text-align: center;
    padding: 40px 24px;
  }

  .service-icon {
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 20px;
  }

  .service-link {
    justify-content: center;
    width: 100%;
  }

  /* Center Footer */
  .footer-brand, .footer-links, .footer-contact {
    text-align: center;
  }
  
  .footer-logo {
    justify-content: center;
  }

  .footer-contact li {
    justify-content: center;
  }

  .social-links {
    justify-content: center;
  }
}


/* Staggered Animations */
.services-grid .service-card:nth-child(1) { transition-delay: 0s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.15s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.3s; }

.projects-grid .project-card:nth-child(1) { transition-delay: 0s; }
.projects-grid .project-card:nth-child(2) { transition-delay: 0.15s; }

.industry-grid .industry-card:nth-child(1) { transition-delay: 0s; }
.industry-grid .industry-card:nth-child(2) { transition-delay: 0.15s; }
.industry-grid .industry-card:nth-child(3) { transition-delay: 0.3s; }
.industry-grid .industry-card:nth-child(4) { transition-delay: 0.45s; }

/* Scroll to Top Button */
.scroll-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--clr-turquoise);
  color: var(--clr-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}
.scroll-top-btn:hover {
  transform: translateY(-5px);
  background-color: var(--clr-black);
}