@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+Tamil:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

/* ==========================================================================
   Clean & Elegant Modern Design System (Minimalist Redesign)
   ========================================================================== */
:root {
  --primary-color: #0A2540;      /* Deep Royal Blue */
  --secondary-color: #FFFFFF;    /* Pure White */
  --accent-color: #206095;       /* Soft Blue Accent */
  
  --text-dark: #0A2540;          /* Dark Blue Ink */
  --text-muted: #5B7B9E;         /* Muted blue-gray */
  --bg-light: #F8FAFC;           /* Off-white background */
  --border-color: rgba(32, 96, 149, 0.08); /* Clean modern thin divider */
  --whatsapp-color: #0A2540;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', 'Noto Sans Tamil', sans-serif;
  
  --container-width: 1200px;
  --header-height: 80px;
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Extremely soft, modern organic shadow */
  --box-shadow-premium: 0 20px 40px -15px rgba(10, 37, 64, 0.05);
  --box-shadow-hover: 0 30px 60px -10px rgba(10, 37, 64, 0.1);
}

/* ==========================================================================
   Global Reset & Clean Typography
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background-color: var(--secondary-color);
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

/* Typography Customization */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: 3.5rem; font-weight: 800; }
h2 { font-size: 2.25rem; font-weight: 800; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; font-weight: 700; }
h4 { font-size: 1.2rem; font-weight: 600; }

.section-title {
  text-align: center;
  margin-bottom: 5rem;
  position: relative;
  z-index: 1;
}

.section-title h2 {
  margin-bottom: 0.75rem;
  font-weight: 800;
}

.section-title p {
  color: var(--text-muted);
  max-width: 650px;
  margin: 1rem auto 0;
  font-size: 1.1rem;
  font-weight: 400;
  line-height: 1.6;
}

/* Elegant background watermarks for sections */
.section-number {
  position: absolute;
  top: -45px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 8rem;
  font-family: var(--font-heading);
  font-weight: 900;
  color: rgba(32, 96, 149, 0.03);
  z-index: -1;
  line-height: 1;
  user-select: none;
  pointer-events: none;
  letter-spacing: -0.05em;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 2.5rem;
}

section {
  padding: 8rem 0;
  position: relative;
}

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

/* ==========================================================================
   Clean & Organic Box System (Redesigned - Removing Rigid Borders/Ticks)
   ========================================================================== */
.blueprint-box {
  position: relative;
  border: 1px solid var(--border-color);
  background-color: var(--secondary-color);
  transition: var(--transition-smooth);
  box-shadow: var(--box-shadow-premium);
  border-radius: 20px; /* Modern Soft Rounding */
  overflow: hidden;
}

/* Hide legacy coordinate / tick lines */
.blueprint-line-h,
.blueprint-line-v {
  display: none !important;
}

.blueprint-box:hover {
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-6px);
  border-color: rgba(32, 96, 149, 0.15);
}

/* ==========================================================================
   Buttons (Refined Pill & Rounded Buttons)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.25rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 100px; /* Modern Pill Shape */
  border: 1.5px solid var(--primary-color);
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn:active {
  transform: translateY(0) scale(0.96) !important;
  box-shadow: 0 4px 10px rgba(10, 37, 64, 0.1) !important;
  transition: all 0.05s ease !important;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}
.btn-primary:hover {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(10, 37, 64, 0.15);
}

.btn-secondary {
  background-color: transparent;
  border-color: rgba(10, 37, 64, 0.15);
  color: var(--primary-color);
}
.btn-secondary:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(10, 37, 64, 0.05);
}

.btn-white {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.btn-white:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(10, 37, 64, 0.15);
}

/* ==========================================================================
   Header & Navigation (Sleek Glassmorphism)
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(10, 37, 64, 0.05);
  z-index: 1000;
  transition: var(--transition-smooth);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 12px;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem; /* Generous, professional gap on desktop */
}

/* Hide mobile cta in desktop view */
.mobile-cta {
  display: none;
}

.nav-link {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  padding: 0.5rem 0;
  opacity: 0.8;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-color);
  opacity: 1;
}

/* Modern minimalist line indicator */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: var(--transition-smooth);
  transform: translateX(-50%);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 16px;
}

.nav-cta {
  display: flex;
  align-items: center;
}

.nav-cta .btn {
  padding: 0.65rem 1.5rem;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.phone-icon {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5px;
  transition: transform var(--transition-fast);
  display: inline-block;
  flex-shrink: 0;
}

.btn:hover .phone-icon {
  transform: scale(1.1) rotate(10deg);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid rgba(10, 37, 64, 0.1);
  cursor: pointer;
  padding: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: none; /* Controlled by media queries */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  z-index: 1100;
  transition: var(--transition-fast);
}
.menu-toggle:hover {
  background-color: var(--bg-light);
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--primary-color);
  transition: var(--transition-smooth);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  background-color: var(--secondary-color);
  padding: 8rem 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 5rem;
}

.hero-content {
  max-width: 620px;
}

.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1.25rem;
}

/* Image container with soft rounded corners & ambient shadows */
.hero-image-container {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 30px 60px -15px rgba(10, 37, 64, 0.1);
}

.hero-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.hero-image-container:hover .hero-img {
  transform: scale(1.03);
}

/* ==========================================================================
   Asymmetric Alternating Overlap Sections (Pure Minimalism)
   ========================================================================== */
.overlap-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  gap: 3.5rem;
}

.overlap-image-wrapper {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--box-shadow-premium);
}

.overlap-image-wrapper img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.overlap-text {
  background-color: var(--secondary-color);
  border-radius: 24px;
  padding: 4rem;
  box-shadow: var(--box-shadow-premium);
  position: relative;
  border: 1px solid var(--border-color);
}

/* Modern soft layout overrides overlapping lines with spacing */
.overlap-container.text-left .overlap-text {
  grid-column: 1;
  grid-row: 1;
}
.overlap-container.text-left .overlap-image-wrapper {
  grid-column: 2;
  grid-row: 1;
}

.overlap-container.text-right .overlap-text {
  grid-column: 2;
  grid-row: 1;
}
.overlap-container.text-right .overlap-image-wrapper {
  grid-column: 1;
  grid-row: 1;
}

.overlap-text .subheading {
  color: var(--accent-color);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  display: block;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.overlap-text h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  font-weight: 800;
  line-height: 1.25;
}

.overlap-text p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
  line-height: 1.65;
}

.overlap-container:hover .overlap-image-wrapper img {
  transform: scale(1.03);
}

/* ==========================================================================
   Clean Bento Services Layout
   ========================================================================== */
.asymmetric-services-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.5rem;
  align-items: stretch;
}

/* Symmetric Grid Layout (used for core values and list services) */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

.asymmetric-left-column {
  display: flex;
  flex-direction: column;
}

.asymmetric-right-column {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

/* Service card structures - clean modern bento boxes with soft rounding */
.service-card {
  border-radius: 24px;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  background-color: var(--secondary-color);
  border: 1px solid var(--border-color);
  box-shadow: var(--box-shadow-premium);
  transition: var(--transition-smooth);
}

.service-card:hover {
  box-shadow: var(--box-shadow-hover);
  transform: translateY(-6px);
  border-color: rgba(32, 96, 149, 0.15);
}

.service-card-featured {
  flex-grow: 1;
  padding: 4.5rem 3.5rem;
  justify-content: center;
}

.service-card-mini {
  padding: 2.5rem 3rem;
}

.service-card .service-icon-box {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.75rem;
  color: var(--accent-color);
  background-color: rgba(32, 96, 149, 0.05);
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon-box {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

.service-card .service-icon-box svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.service-card-featured h3 {
  font-size: 2rem;
}

.tamil-title {
  display: block;
  font-size: 0.9rem;
  color: var(--accent-color);
  margin-bottom: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.service-card-featured .tamil-title {
  font-size: 1.15rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ==========================================================================
   Masonry Portfolio Grid
   ========================================================================== */
.projects-filter {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: transparent;
  border: 1px solid rgba(10, 37, 64, 0.08);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 100px; /* Fully rounded tags */
  color: var(--primary-color);
  transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--secondary-color);
  box-shadow: 0 10px 20px rgba(10, 37, 64, 0.08);
}

.masonry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: 2.5rem;
}

.project-card {
  position: relative;
  overflow: hidden;
  border-radius: 24px; /* Smooth rounded images */
  cursor: pointer;
  background-color: var(--bg-light);
  box-shadow: var(--box-shadow-premium);
  transition: var(--transition-smooth);
}

.project-card.span-h2-v2 {
  grid-column: span 2;
  grid-row: span 2;
}
.project-card.span-h1-v2 {
  grid-column: span 1;
  grid-row: span 2;
}
.project-card.span-h1-v1 {
  grid-column: span 1;
  grid-row: span 1;
}
.project-card.span-h2-v1 {
  grid-column: span 2;
  grid-row: span 1;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: var(--transition-smooth);
}

/* Clean, modern overlay instead of blueprint lines */
.project-blueprint-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 37, 64, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  text-align: center;
  pointer-events: none;
  z-index: 5;
}

/* Hide line animations inside portfolio hover */
.project-blueprint-hover .hover-line-x,
.project-blueprint-hover .hover-line-y {
  display: none !important;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--box-shadow-hover);
}

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

.project-card:hover .project-blueprint-hover {
  opacity: 1;
}

.project-blueprint-hover .hover-content {
  z-index: 10;
  transform: translateY(15px);
  transition: var(--transition-smooth);
}
.project-card:hover .project-blueprint-hover .hover-content {
  transform: translateY(0);
}

.project-blueprint-hover h4 {
  font-family: var(--font-heading);
  color: var(--secondary-color);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.project-blueprint-hover p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
}

/* ==========================================================================
   Contact Page & Clean Minimal Forms
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 5rem;
  align-items: start;
}

.contact-card {
  padding: 4rem;
  border-radius: 24px;
  background-color: var(--secondary-color);
  border: 1px solid var(--border-color);
  box-shadow: var(--box-shadow-premium);
}

.contact-card h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2rem;
  margin-bottom: 2.5rem;
  letter-spacing: -0.02em;
}

.form-group {
  margin-bottom: 1.75rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-control {
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-dark);
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 12px; /* Smooth rounded fields */
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  background-color: var(--secondary-color);
  box-shadow: 0 10px 20px rgba(32, 96, 149, 0.03);
}

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

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-info-block h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
}

.info-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-color: rgba(32, 96, 149, 0.05);
  transition: var(--transition-smooth);
}

.info-icon svg {
  width: 22px;
  height: 22px;
}

.info-details h4 {
  font-size: 0.85rem;
  color: var(--accent-color);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.info-details p,
.info-details a {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 500;
}

.info-details a:hover {
  color: var(--primary-color);
}

.info-item:hover .info-icon {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

.map-container {
  margin-top: 2rem;
  border-radius: 24px;
  box-shadow: var(--box-shadow-premium);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.map-container iframe {
  width: 100%;
  height: 320px;
  border: none;
  display: block;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  padding: 6rem 0 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 1fr;
  gap: 5rem;
  margin-bottom: 5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.footer-logo .logo-img {
  background-color: #ffffff;
  padding: 4px;
  border-radius: 12px;
  object-fit: contain;
}

.footer-logo .logo-text {
  color: var(--secondary-color);
}

.footer-about p {
  color: #8faed1;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-title {
  color: var(--secondary-color);
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 1.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-links a {
  color: #8faed1;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: var(--secondary-color);
  transform: translateX(4px);
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  color: #8faed1;
  font-size: 0.95rem;
}

.footer-contact-info li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-contact-info svg {
  width: 18px;
  height: 18px;
  color: var(--accent-color);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.footer-contact-info a {
  color: #8faed1;
}

.footer-contact-info a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #8faed1;
  font-size: 0.85rem;
}

/* ==========================================================================
   Bilingual, Visual Layout Specifics
   ========================================================================== */
.page-header {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  padding: 6rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header h1 {
  color: var(--secondary-color);
  font-size: 3rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  font-weight: 800;
}

.page-header p {
  color: #8faed1;
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Process Timeline Step Cards */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2rem;
  margin-top: 4.5rem;
}

.process-card {
  text-align: center;
  position: relative;
}

.process-step-num {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background-color: rgba(32, 96, 149, 0.06);
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  transition: var(--transition-smooth);
}

.process-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  font-weight: 800;
}

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

.process-card:hover .process-step-num {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: scale(1.1) translateY(-2px);
}

.about-banner {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  padding: 4.5rem 2.5rem;
  margin-top: 5rem;
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--box-shadow-premium);
}

.about-banner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.banner-stat h3 {
  font-size: 3rem;
  color: var(--secondary-color);
  margin-bottom: 0.25rem;
  font-weight: 800;
}

.banner-stat p {
  color: #8faed1;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

/* Floating WhatsApp Button */
.whatsapp-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  background-color: var(--primary-color);
  color: var(--secondary-color);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  border-radius: 50%; /* Modern Circle */
  box-shadow: 0 10px 30px rgba(10, 37, 64, 0.15);
  transition: var(--transition-smooth);
}

.whatsapp-btn:hover {
  transform: translateY(-4px) scale(1.05);
  background-color: var(--accent-color);
  box-shadow: 0 15px 30px rgba(10, 37, 64, 0.25);
}

.whatsapp-btn svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.form-feedback {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.85rem;
  display: none;
}

.form-feedback.success {
  background-color: #EBF8FF;
  color: #2B6CB0;
  border: 1px solid #90CDF4;
  display: block;
}

.form-feedback.error {
  background-color: #FFF5F5;
  color: #C53030;
  border: 1px solid #FEB2B2;
  display: block;
}

/* ==========================================================================
   Responsive Media Queries
   ========================================================================== */

/* Tablet & Mobile Layout Shifts (Collapsing at 1024px prevents header overcrowding) */
@media (max-width: 1024px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.75rem; }
  
  section {
    padding: 5rem 0;
  }
  
  .container {
    padding: 0 1.5rem;
  }
  
  /* Mobile menu collapses here */
  .menu-toggle {
    display: flex !important;
  }
  
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 3rem 2rem;
    gap: 1.75rem;
    border-top: 1px solid rgba(10, 37, 64, 0.05);
    box-shadow: 0 15px 30px rgba(10, 37, 64, 0.05);
    transition: var(--transition-smooth);
    overflow-y: auto;
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    padding: 0.5rem 0;
  }
  
  .logo-link {
    order: 1;
  }
  
  /* Single Call Now button remains in the header but becomes compact */
  .nav-cta {
    display: flex;
    align-items: center;
    order: 2;
    margin-left: auto;
    margin-right: 1rem;
    z-index: 1005;
  }
  
  .nav-cta .btn {
    padding: 0.45rem 1.15rem;
    font-size: 0.725rem;
    letter-spacing: 0.5px;
    height: 34px;
    border-radius: 50px;
    font-weight: 700;
    gap: 0.35rem;
    border-width: 1px;
    box-shadow: 0 4px 10px rgba(10, 37, 64, 0.08);
  }
  
  .menu-toggle {
    order: 3;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
  
  /* Hero section adjustments */
  .hero {
    padding: 5rem 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  .hero-content {
    margin: 0 auto;
  }
  .hero-buttons {
    justify-content: center;
  }
  .hero-img {
    height: 360px;
  }
  
  /* Overlap container resets (Stops grid conflicts and weird alignment) */
  .overlap-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .overlap-container.text-left .overlap-text,
  .overlap-container.text-left .overlap-image-wrapper,
  .overlap-container.text-right .overlap-text,
  .overlap-container.text-right .overlap-image-wrapper {
    grid-column: auto !important;
    grid-row: auto !important;
  }
  .overlap-text {
    padding: 2.5rem 2rem;
  }
  .overlap-image-wrapper img {
    height: 350px;
  }
  
  /* Services & Bento Grids */
  .asymmetric-services-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .service-card {
    padding: 2.5rem 2rem;
  }
  .service-card-featured {
    padding: 3rem 2rem;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
  
  /* Masonry Grid */
  .masonry-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 240px;
    gap: 2rem;
  }
  .project-card.span-h2-v2,
  .project-card.span-h1-v2,
  .project-card.span-h1-v1,
  .project-card.span-h2-v1 {
    grid-column: span 1 !important;
    grid-row: span 1 !important;
  }
  
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  
  .contact-card {
    padding: 2.5rem 2rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1.25rem;
    text-align: center;
  }
  
  .about-banner-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .section-number {
    font-size: 5rem;
    top: -25px;
  }
}

/* Portrait Mobile Devices */
@media (max-width: 768px) {
  h1 { font-size: 2.15rem; }
  h2 { font-size: 1.6rem; }
  
  section {
    padding: 3.5rem 0;
  }
  
  .container {
    padding: 0 1.25rem;
  }
  
  .logo-text {
    font-size: 1.15rem;
  }
  
  .logo-img {
    width: 38px;
    height: 38px;
    border-radius: 10px;
  }
  
  .menu-toggle {
    width: 38px;
    height: 38px;
  }
  
  .nav-cta {
    margin-right: 0.75rem;
  }
  
  .nav-cta .btn {
    padding: 0.4rem 1rem;
    font-size: 0.7rem;
    height: 32px;
  }
  
  .hero-img {
    height: 280px;
  }
  
  .overlap-image-wrapper img {
    height: 280px;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .masonry-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 260px;
    gap: 1.5rem;
  }
  
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

/* Extra Small Mobile Screens */
@media (max-width: 480px) {
  h1 { font-size: 1.85rem; }
  .hero-content h1 { font-size: 2rem; }
  
  .container {
    padding: 0 1rem;
  }
  
  .logo-text {
    font-size: 0.95rem;
  }
  
  .logo-img {
    width: 36px;
    height: 36px;
  }
  
  .nav-cta {
    margin-right: 0.5rem;
  }
  
  .nav-cta .btn {
    padding: 0.35rem 0.85rem;
    font-size: 0.675rem;
    height: 30px;
    gap: 0.25rem;
  }
  
  .menu-toggle {
    width: 36px;
    height: 36px;
  }
  
  /* Extreme mobile screens: collapse "Call Now" text into a gorgeous circular icon button */
  @media (max-width: 360px) {
    .logo-text {
      font-size: 0.85rem;
    }
    .nav-cta {
      margin-right: 0.4rem;
    }
    .nav-cta .btn {
      width: 32px;
      height: 32px;
      padding: 0;
      border-radius: 50%;
      justify-content: center;
    }
    .nav-cta .btn span {
      display: none;
    }
    .phone-icon {
      margin-right: 0 !important;
    }
  }
  
  .projects-filter {
    gap: 0.5rem;
  }
  .filter-btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.75rem;
  }
  
  .process-steps {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .whatsapp-btn {
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
  }
}

/* ==========================================================================
   Interactive Grid Project Carousels (3 self-contained cards)
   ========================================================================== */
.project-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
}

@media (max-width: 1024px) {
  .project-cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .project-cards-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.project-carousel-card {
  background: #ffffff;
  border: 1px solid rgba(10, 37, 64, 0.08);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(10, 37, 64, 0.04);
  display: flex;
  flex-direction: column;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-carousel-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(10, 37, 64, 0.1);
}

.single-project-carousel {
  max-width: 900px;
  margin: 3rem auto 0;
  width: 100%;
}

.single-project-carousel .card-carousel-container {
  height: 520px;
}

@media (max-width: 900px) {
  .single-project-carousel .card-carousel-container {
    height: 420px;
  }
}

@media (max-width: 600px) {
  .single-project-carousel .card-carousel-container {
    height: 320px;
  }
}

/* Card image container acting as the carousel stage */
.card-carousel-container {
  position: relative;
  width: 100%;
  height: 360px; /* Taller height to showcase the imagery elegantly */
  overflow: hidden;
  background-color: var(--primary-color);
}

@media (max-width: 768px) {
  .card-carousel-container {
    height: 280px;
  }
}

.card-carousel-stage {
  position: relative;
  width: 100%;
  height: 100%;
}

.card-carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease-in-out, visibility 0.5s ease-in-out;
}

.card-carousel-slide.active {
  opacity: 1;
  visibility: visible;
}

.card-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 4s ease;
}

.card-carousel-slide.active .card-carousel-img {
  transform: scale(1.02);
}

/* Caption on top of image, styled like our premium overlays */
.card-carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.5rem 1.5rem 1.5rem;
  background: linear-gradient(to top, rgba(10, 37, 64, 0.98) 45%, rgba(10, 37, 64, 0.4) 75%, rgba(10, 37, 64, 0));
  color: var(--secondary-color);
  z-index: 3;
}

.card-status-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-color);
  letter-spacing: 1px;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 0.25rem;
}

.card-carousel-caption h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.3rem 0;
  color: var(--secondary-color);
}

.card-carousel-caption p {
  font-size: 0.8rem;
  opacity: 0.85;
  margin: 0;
  line-height: 1.45;
  color: #c9d8e6;
}

/* Card Header title */
.card-carousel-header {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(10, 37, 64, 0.05);
  background-color: var(--secondary-color);
  text-align: center;
}

.card-carousel-header h3 {
  font-family: var(--font-heading);
  color: var(--primary-color);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
}

.card-carousel-header .tamil-title {
  font-family: var(--font-heading);
  color: var(--accent-color);
  font-size: 0.9rem;
  display: block;
  font-weight: 700;
}

/* Mini Carousel Control Arrows */
.card-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  z-index: 10;
  opacity: 0;
  transition: opacity 0.3s ease, background-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
  box-shadow: 0 2px 8px rgba(10, 37, 64, 0.15);
}

.card-carousel-container:hover .card-carousel-btn {
  opacity: 1;
}

.card-carousel-btn:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-50%) scale(1.05);
}

.card-carousel-btn-prev {
  left: 12px;
}

.card-carousel-btn-next {
  right: 12px;
}

/* Dots underneath slide or inside caption */
.card-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 0;
  background-color: #fafbfc;
  border-top: 1px solid rgba(10, 37, 64, 0.03);
}

.card-carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: rgba(10, 37, 64, 0.15);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background-color 0.3s ease, width 0.3s ease;
}

.card-carousel-dot.active {
  background-color: var(--primary-color);
  width: 16px;
  border-radius: 100px;
}

@media (max-width: 1024px) {
  .card-carousel-btn {
    opacity: 0.85 !important;
  }
}