/* 
 * Karthik Wheel Alignment - Premium Dark & Gold Theme CSS
 * Palette: #070809 (Deep Near-Black) & #FEC006 (Precision Gold)
 * Featuring: Engineering Grid Background, Strict Image Sizing, Zero-Blue Elements
 */

:root {
  --primary-color: #070809;
  --secondary-color: #0E1014;
  --accent-color: #FEC006;
  --accent-hover: #E0A800;
  --dark-color: #070809;
  --card-bg: #111317;
  --card-hover-bg: #16191E;
  --text-color: #E5E7EB;
  --text-muted: #9CA3AF;
  --white-color: #FFFFFF;
  --light-border: rgba(255, 255, 255, 0.08);
  --accent-border: rgba(254, 192, 6, 0.2);

  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Base Body Resets & Precision Grid Background */
body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-color);
  background-color: var(--primary-color);
  /* Subtly textured carbon engineering grid background */
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.005) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.005) 1px, transparent 1px);
  background-size: 24px 24px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 750;
  color: var(--white-color);
  letter-spacing: -0.4px;
}

/* Hyperlink and Text Selection Cleanups (Preventing Default Blue) */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--white-color);
}

::selection {
  background-color: var(--accent-color);
  color: var(--primary-color);
}

/* Compact Sticky Navbar */
.navbar {
  background-color: rgba(7, 8, 9, 0.96) !important;
  border-bottom: 1px solid var(--light-border);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  transition: var(--transition-smooth);
}

.navbar-brand {
  font-weight: 800;
  color: var(--white-color) !important;
  font-size: 1.35rem;
  letter-spacing: -0.5px;
}

.navbar-brand span {
  color: var(--accent-color);
}

.nav-link {
  font-weight: 600;
  color: var(--text-color) !important;
  font-size: 0.9rem;
  padding: 0.5rem 0.9rem !important;
  position: relative;
  transition: var(--transition-smooth);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.9rem;
  right: 0.9rem;
  height: 2px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Buttons (Completely Solid & Professional) */
.btn-primary {
  background-color: var(--accent-color) !important;
  border-color: var(--accent-color) !important;
  color: var(--primary-color) !important;
  font-weight: 750;
  padding: 0.6rem 1.4rem;
  border-radius: var(--border-radius-md);
  transition: var(--transition-smooth);
  box-shadow: 0 4px 12px rgba(254, 192, 6, 0.15);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(254, 192, 6, 0.3);
}

.btn-secondary-custom {
  background-color: #16181D;
  border: 1px solid var(--light-border);
  color: var(--white-color);
  font-weight: 650;
  padding: 0.6rem 1.4rem;
  border-radius: var(--border-radius-md);
  transition: var(--transition-smooth);
}

.btn-secondary-custom:hover {
  background-color: #20232A;
  border-color: var(--accent-color);
  color: var(--white-color);
  transform: translateY(-2px);
}

.btn-outline-custom {
  background-color: transparent;
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  font-weight: 700;
  padding: 0.6rem 1.4rem;
  border-radius: var(--border-radius-md);
  transition: var(--transition-smooth);
}

.btn-outline-custom:hover {
  background-color: var(--accent-color);
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

/* Image Size Fixes (Ensures exact, non-distorted responsive image ratios) */
.hero-img-container {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--accent-border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

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

.hero-img:hover {
  transform: scale(1.02);
}

/* Split Image Container for Service Sections (Saves from tall, ugly images) */
.split-image-container {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--accent-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.split-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

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

/* Broad banner image for Why-Choose-Us and About pages */
.banner-image-container {
  width: 100%;
  height: 380px;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--accent-border);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
}

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

/* Hero Section Style with Background Video support and Radial Accent Glow */
.hero-section {
  background-color: var(--primary-color);
  position: relative;
  overflow: hidden;
  padding: 7rem 0;
  border-bottom: 1px solid var(--light-border);
}

.hero-video-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 0;
  transform: translate(-50%, -50%);
  object-fit: cover;
  pointer-events: none;
  opacity: 0.65;
  /* Enhanced visibility for the background video */
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgb(0 0 0 / 91%) 0%, #000000fa 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* Smooth Entrance Keyframe Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.85s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-100 {
  animation-delay: 100ms;
}

.delay-200 {
  animation-delay: 200ms;
}

.delay-300 {
  animation-delay: 300ms;
}

.delay-400 {
  animation-delay: 400ms;
}

.delay-500 {
  animation-delay: 500ms;
}

/* Container Cards */
.card,
.highlight-card,
.dark-card {
  background-color: var(--card-bg) !important;
  border: 1px solid var(--light-border) !important;
  border-radius: var(--border-radius-lg) !important;
  transition: var(--transition-smooth);
}

.card:hover,
.highlight-card:hover,
.dark-card:hover {
  transform: translateY(-5px);
  background-color: var(--card-hover-bg) !important;
  border-color: rgba(254, 192, 6, 0.45) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5) !important;
}

.icon-box {
  width: 48px;
  height: 48px;
  background-color: rgba(254, 192, 6, 0.08);
  color: var(--accent-color);
  border: 1px solid rgba(254, 192, 6, 0.15);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1.25rem;
  transition: var(--transition-smooth);
}

.card:hover .icon-box,
.highlight-card:hover .icon-box {
  background-color: var(--accent-color);
  color: var(--primary-color);
  border-color: var(--accent-color);
}

/* Process Steps styling */
.process-section {
  background-color: var(--secondary-color);
  border-top: 1px solid var(--light-border);
  border-bottom: 1px solid var(--light-border);
}

.process-step {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.step-number {
  width: 55px;
  height: 55px;
  background-color: var(--primary-color);
  color: var(--accent-color);
  font-weight: 850;
  font-size: 1.15rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 3px solid var(--accent-color);
  box-shadow: 0 4px 15px rgba(254, 192, 6, 0.2);
  transition: var(--transition-smooth);
  z-index: 2;
  position: relative;
}

.process-step:hover .step-number {
  background-color: var(--accent-color);
  color: var(--primary-color);
  transform: scale(1.08);
}

@media (min-width: 992px) {
  .process-row {
    position: relative;
  }

  .process-row::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 12%;
    right: 12%;
    height: 2px;
    background-color: rgba(254, 192, 6, 0.15);
    z-index: 1;
  }
}

/* Breadcrumbs (Styling for Dark Theme) */
.breadcrumb-container {
  background-color: var(--secondary-color);
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--light-border);
}

.breadcrumb-item a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
}

.breadcrumb-item.active {
  color: var(--text-muted);
}

/* Accordion overrides */
.accordion-item {
  background-color: var(--card-bg) !important;
  border: 1px solid var(--light-border) !important;
}

.accordion-button {
  background-color: var(--card-bg) !important;
  color: var(--white-color) !important;
  font-weight: 700;
}

.accordion-button:not(.collapsed) {
  background-color: var(--card-hover-bg) !important;
  color: var(--accent-color) !important;
  border-bottom: 1px solid rgba(254, 192, 6, 0.1);
}

.accordion-button:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.25rem rgba(254, 192, 6, 0.15);
}

/* Form inputs */
.form-control,
.form-select {
  background-color: #14161B !important;
  border: 1px solid var(--light-border) !important;
  color: var(--white-color) !important;
  border-radius: var(--border-radius-md) !important;
  transition: var(--transition-smooth);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent-color) !important;
  box-shadow: 0 0 0 0.25rem rgba(254, 192, 6, 0.15) !important;
}

.input-group-text {
  background-color: #191B21 !important;
  border: 1px solid var(--light-border) !important;
  color: var(--text-muted) !important;
}

/* Custom Checkmarks */
.checklist {
  list-style-type: none;
  padding-left: 0;
}

.checklist li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.6rem;
}

.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-color) !important;
  font-weight: bold;
}

/* CTA container styling */
.cta-banner {
  background: linear-gradient(135deg, #101216 0%, #171A21 100%);
  border: 1px solid var(--accent-border);
  color: var(--white-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Reusable service badge */
.service-badge {
  background-color: rgba(254, 192, 6, 0.08) !important;
  color: var(--accent-color) !important;
  border: 1px solid rgba(254, 192, 6, 0.2);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 50px;
  letter-spacing: 0.8px;
  display: inline-block;
  margin-bottom: 0.85rem;
}

/* Reusable text colors */
.text-accent {
  color: var(--accent-color) !important;
}

.text-muted {
  color: var(--text-muted) !important;
}

.text-dark {
  color: var(--text-color) !important;
}

/* Floating actions */
.back-to-top {
  background-color: var(--accent-color);
  color: var(--primary-color);
}

.back-to-top:hover {
  background-color: var(--white-color);
  color: var(--primary-color);
}

.floating-call {
  background-color: var(--accent-color);
  color: var(--primary-color);
}

.floating-call:hover {
  background-color: var(--white-color);
  color: var(--primary-color);
}

/* Footer style update */
footer {
  background-color: #040506 !important;
  border-top: 1px solid var(--light-border);
  color: var(--text-muted);
}

footer a {
  color: var(--text-color);
}

footer a:hover {
  color: var(--accent-color);
}

footer h5::after {
  background-color: var(--accent-color);
}

/* Utilities */
.bg-light {
  background-color: var(--secondary-color) !important;
}

.bg-white {
  background-color: var(--primary-color) !important;
}

/* Alert Styling */
.alert-success {
  background-color: #111A14 !important;
  border: 1px solid #1C3825 !important;
  color: #4ADE80 !important;
}

.alert-success h5 {
  color: #4ADE80 !important;
}

.alert-success .text-dark {
  color: #E5E7EB !important;
}

.btn-close {
  filter: invert(1);
}

/* Eradicate default Bootstrap blue utilities */
.text-primary {
  color: var(--white-color) !important;
}

.border-primary {
  border-color: var(--accent-color) !important;
}

.bg-primary {
  background-color: var(--accent-color) !important;
}

/* Quick Connect Floating Bar (Fully Responsive and accessible) */
.floating-quick-bar {
  position: fixed;
  bottom: 24px;
  left: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1050;
}

.quick-bar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  color: var(--primary-color) !important;
  font-size: 1.45rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
  transition: var(--transition-smooth);
  position: relative;
  text-decoration: none;
}

.quick-bar-btn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
}

.btn-whatsapp-chat {
  background-color: #25D366 !important;
  color: var(--white-color) !important;
}

.btn-whatsapp-chat:hover {
  background-color: #1ebd54 !important;
}

.btn-phone-call {
  background-color: var(--accent-color) !important;
}

.btn-phone-call:hover {
  background-color: var(--white-color) !important;
}

.btn-google-maps {
  background-color: #4285F4 !important;
  color: var(--white-color) !important;
}

.btn-google-maps:hover {
  background-color: #357ae8 !important;
}

/* Tooltip text for desktop hover state */
.quick-bar-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 62px;
  background-color: rgba(7, 8, 9, 0.95);
  color: var(--white-color);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  border: 1px solid var(--light-border);
}

.quick-bar-btn:hover::after {
  opacity: 1;
  visibility: visible;
}


/* --- PREMIUM PROFESSIONAL REVEALS & VISUAL EFFECT OVERLAYS --- */

/* Page Loading reveal */
.page-load-fade {
  opacity: 0;
  transform: translateY(15px);
  animation: pageLoadAnimation 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pageLoadAnimation {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Premium Image zoom container classes */
.zoom-image-container {
  overflow: hidden;
  position: relative;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--light-border);
}

.zoom-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.zoom-image-container:hover .zoom-image {
  transform: scale(1.08) !important;
}

/* Visual Image Hover Overlay (View details / arrow display) */
.zoom-image-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(7, 8, 9, 0) 0%, rgba(7, 8, 9, 0.8) 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 1;
  pointer-events: none;
}

.zoom-image-container:hover::before {
  opacity: 1;
}

/* Hover Accent Border Highlighting & translate adjustments on Service Cards */
.card,
.highlight-card,
.dark-card {
  position: relative;
  overflow: hidden;
}

/* Icon rotation and scaling on hover inside cards */
.icon-box i {
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: inline-block;
}

.card:hover .icon-box i,
.highlight-card:hover .icon-box i,
.dark-card:hover .icon-box i {
  transform: scale(1.2) rotate(6deg);
}

/* Button hover movement and shine reflection styling */
.btn-primary,
.btn-secondary-custom,
.btn-outline-custom {
  position: relative;
  overflow: hidden;
  z-index: 2;
}

.btn-primary::before,
.btn-secondary-custom::before,
.btn-outline-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.25),
      transparent);
  transform: skewX(-25deg);
  z-index: 1;
  pointer-events: none;
}

.btn-primary:hover::before,
.btn-secondary-custom:hover::before,
.btn-outline-custom:hover::before {
  left: 150%;
  transition: all 0.8s ease-in-out;
}

/* Button icon slight slide transition */
.btn:hover i.bi-arrow-right,
.btn:hover i.bi-chevron-right {
  transform: translateX(4px);
}

.btn i.bi-arrow-right,
.btn i.bi-chevron-right {
  transition: transform 0.3s ease;
  display: inline-block;
}

/* Scroll reveal transitions */
.reveal-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-fade-in {
  opacity: 0;
  transition: opacity 0.85s ease;
}

.reveal-slide-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-slide-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale-in {
  opacity: 0;
  transform: scale(0.94);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-zoom-in {
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-fade-up.revealed,
.reveal-fade-in.revealed,
.reveal-slide-left.revealed,
.reveal-slide-right.revealed,
.reveal-scale-in.revealed,
.reveal-zoom-in.revealed {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* Floating background geometric icons / technical lines */
.floating-bg-element {
  position: absolute;
  pointer-events: none;
  opacity: 0.04;
  color: var(--accent-color);
  z-index: 1;
  animation: bgFloatMovement 24s infinite linear;
}

@keyframes bgFloatMovement {
  0% {
    transform: translateY(0) rotate(0deg) scale(1);
  }

  50% {
    transform: translateY(-40px) rotate(180deg) scale(1.15);
  }

  100% {
    transform: translateY(0) rotate(360deg) scale(1);
  }
}

/* Stagger delay classes for sequentially fading objects */
.stagger-delay-1 {
  transition-delay: 100ms;
}

.stagger-delay-2 {
  transition-delay: 200ms;
}

.stagger-delay-3 {
  transition-delay: 300ms;
}

.stagger-delay-4 {
  transition-delay: 400ms;
}

.stagger-delay-5 {
  transition-delay: 500ms;
}

/* Process Section connection line reveals */
@media (min-width: 992px) {
  .process-row {
    position: relative;
  }

  .process-line-active {
    content: '';
    position: absolute;
    top: 28px;
    left: 12%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color) 0%, #FEC006 100%);
    z-index: 1;
    transition: width 1.8s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .process-row.revealed .process-line-active {
    width: 76%;
  }
}

/* Parallax movement scroll helper class */
.parallax-section {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

@media (max-width: 991px) {
  .parallax-section {
    background-attachment: scroll;
    /* Fallback for mobile browser stability */
  }
}

/* User Reduced Motion accessibility safeguards */
@media (prefers-reduced-motion: reduce) {

  .reveal-fade-up,
  .reveal-fade-in,
  .reveal-slide-left,
  .reveal-slide-right,
  .reveal-scale-in,
  .reveal-zoom-in,
  .page-load-fade {
    transition: none !important;
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .floating-bg-element {
    animation: none !important;
  }

  .btn-primary::before,
  .btn-secondary-custom::before,
  .btn-outline-custom::before {
    display: none !important;
  }

  .zoom-image-container:hover .zoom-image {
    transform: none !important;
  }
}