/* ==========================================================================
   Knocknok Clone - Complete Style Sheet
   ========================================================================== */

/* Design Tokens (CSS Variables) */
:root {
  --color-primary: #ff8a73;
  --color-primary-hover: #e07965;
  --color-secondary: #58468c;
  --color-secondary-light: #6a56a6;
  --color-blue: #5580ff;
  --color-blue-hover: #3d66eb;
  --color-blue-light: #7bb9ff;
  
  --color-text-dark: #2d2d47;
  --color-text-muted: #716c80;
  --color-text-light: #ffffff;
  
  --color-bg-white: #ffffff;
  --color-bg-gray: #f8fafc;
  --color-bg-gray-dark: #f4f4f4;
  --color-bg-blue-tint: #e5eeff;
  --color-bg-blue-tint-dark: #dee9fc;
  --color-bg-orange-tint: #feede6;
  --color-bg-orange-light: #ffe6d9;

  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Roboto', 'Open Sans', sans-serif;
  
  --max-width: 1300px;
  --header-height: 100px;
  --header-height-mobile: 70px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 30px rgba(45, 45, 71, 0.08);
  --shadow-lg: 0 15px 45px rgba(244, 67, 54, 0.11);
  --shadow-hover: 0 20px 45px rgba(222, 119, 68, 0.15);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-slow: 0.5s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-muted);
  line-height: 1.6;
  background-color: var(--color-bg-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-dark);
  font-weight: 500;
  line-height: 1.3;
}

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

ul, ol {
  list-style: none;
}

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

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  outline: none;
}

.no-scroll {
  overflow: hidden;
}

/* Grid & Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 30px;
}

.section-padding {
  padding: 100px 0;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  padding: 14px 38px;
  border-radius: 30px;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  box-shadow: 0 5px 15px rgba(255, 138, 115, 0.3);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 138, 115, 0.4);
}

.btn-blue {
  background-color: var(--color-blue);
  color: var(--color-text-light);
  box-shadow: 0 5px 15px rgba(85, 128, 255, 0.3);
}

.btn-blue:hover {
  background-color: var(--color-blue-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(85, 128, 255, 0.4);
}

.btn-light-blue {
  background-color: var(--color-blue-light);
  color: var(--color-text-light);
  box-shadow: 0 5px 15px rgba(123, 185, 255, 0.3);
}

.btn-light-blue:hover {
  background-color: #68a8ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(123, 185, 255, 0.4);
}

/* Header Section */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: transparent;
  transition: background-color var(--transition-normal), height var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  align-items: center;
}

.header.sticky {
  background-color: var(--color-bg-white);
  height: 80px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

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

.logo img {
  height: 60px;
  width: auto;
  transition: height var(--transition-normal);
}

.header.sticky .logo img {
  height: 50px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 35px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: 8px 0;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Header / Hamburger Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 25px;
  height: 18px;
  cursor: pointer;
  z-index: 1001;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-dark);
  transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  height: 100vh;
  background-color: var(--color-bg-white);
  z-index: 999;
  box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
  padding: 100px 40px 40px 40px;
  display: flex;
  flex-direction: column;
  gap: 25px;
  transition: right var(--transition-normal);
}

.mobile-nav.active {
  right: 0;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  background: radial-gradient(circle at top right, var(--color-bg-orange-light), #fff 60%);
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 50px;
}

.hero-content {
  z-index: 10;
}

.hero-content h1 {
  font-size: 48px;
  font-weight: 600;
  color: var(--color-secondary);
  line-height: 1.25;
  margin-bottom: 20px;
}

.hero-content p {
  font-size: 20px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 35px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 20px;
}

/* Floating Images in Hero */
.hero-graphics {
  position: relative;
  width: 100%;
  height: 600px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.graphic-bg-vector {
  position: absolute;
  top: 10%;
  left: 5%;
  width: 90%;
  z-index: 1;
  animation: float-slow 6s ease-in-out infinite alternate;
}

.graphic-phone-main {
  position: absolute;
  z-index: 3;
  width: 60%;
  top: 5%;
  left: 20%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
}

.graphic-phone-sub {
  position: absolute;
  z-index: 2;
  width: 60%;
  bottom: 0%;
  left: 10%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
  animation: float-normal 4s ease-in-out infinite alternate;
}

/* Float Animations */
@keyframes float-slow {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float-normal {
  0% { transform: translateY(0); }
  100% { transform: translateY(-15px); }
}

/* About Section */
.about-section {
  background-color: var(--color-bg-white);
  padding: 100px 0;
  border-bottom: 1px solid var(--color-bg-gray);
}

.about-content {
  text-align: center;
  max-width: 950px;
  margin: 0 auto;
}

.about-content h2 {
  font-size: 32px;
  color: var(--color-text-dark);
  margin-bottom: 30px;
  line-height: 1.4;
}

.about-content p {
  font-size: 19px;
  line-height: 1.8;
  color: var(--color-text-muted);
}

/* Why Section */
.why-section {
  padding: 100px 0;
  background-color: var(--color-bg-white);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-images {
  position: relative;
  height: 500px;
  width: 100%;
}

.why-img-main {
  position: absolute;
  top: 0;
  right: 0;
  width: 65%;
  border-radius: 12px;
  box-shadow: 10px 10px 35px 5px rgba(0, 0, 0, 0.09);
  z-index: 2;
  transition: transform var(--transition-normal);
}

.why-img-aux {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 65%;
  border-radius: 12px;
  box-shadow: -10px 10px 35px 5px rgba(0, 0, 0, 0.07);
  z-index: 1;
  transition: transform var(--transition-normal);
}

.why-images:hover .why-img-main {
  transform: translate(-10px, -10px);
}

.why-images:hover .why-img-aux {
  transform: translate(10px, 10px);
}

.why-content h2 {
  font-size: 36px;
  margin-bottom: 25px;
  position: relative;
}

.why-content .intro {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-dark);
  margin-bottom: 30px;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.why-list li {
  position: relative;
  padding-left: 28px;
  font-size: 16px;
  line-height: 1.5;
}

.why-list li::before {
  content: '•';
  color: var(--color-primary);
  font-size: 28px;
  position: absolute;
  left: 5px;
  top: -8px;
}

/* Features Section */
.features-section {
  background-color: var(--color-bg-white);
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: var(--color-bg-white);
  padding: 50px 25px 40px 25px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0px 3px 60px 5px rgba(244, 67, 54, 0.06);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0px 3px 60px 5px rgba(244, 67, 54, 0.12);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 25px auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.feature-card h3 {
  font-size: 19px;
  color: var(--color-text-dark);
  margin-bottom: 15px;
  line-height: 1.4;
  font-weight: 600;
}

.feature-card p {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Installation Section */
.install-section {
  padding: 80px 0;
  background-color: var(--color-bg-white);
}

.install-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}

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

.install-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto 30px auto;
  transition: transform var(--transition-normal);
}

.install-card:hover .install-icon {
  transform: scale(1.08);
}

.install-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.install-card h3 {
  font-size: 24px;
  color: var(--color-secondary);
  margin-bottom: 20px;
}

.install-card p {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
}

/* Comprehensive Section */
.comprehensive-section {
  background-color: var(--color-bg-gray);
  padding: 100px 0;
}

.comprehensive-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.comprehensive-content h2 {
  font-size: 34px;
  color: var(--color-secondary);
  margin-bottom: 30px;
}

.comprehensive-content p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text-muted);
}

/* What we provide Section */
.provide-section {
  padding: 100px 0;
  background-color: var(--color-bg-white);
}

.provide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.provide-card {
  background: var(--color-bg-white);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0px 3px 40px rgba(244, 67, 54, 0.05);
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all var(--transition-normal);
}

.provide-card:hover {
  box-shadow: 0px 3px 50px rgba(244, 67, 54, 0.11);
  transform: translateY(-3px);
}

.provide-card .icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.provide-card h4 {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-dark);
}

/* Sectors Tab Section */
.sectors-section {
  padding: 100px 0;
  background-color: var(--color-bg-white);
}

.tab-nav-wrapper {
  display: flex;
  justify-content: center;
  border-bottom: 2px solid #e3e5ec;
  margin-bottom: 50px;
  position: relative;
}

.tab-nav {
  display: flex;
  gap: 80px;
}

.tab-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 10px;
  cursor: pointer;
  position: relative;
  text-align: center;
}

.tab-btn i {
  font-size: 24px;
  color: #b2b5be;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.tab-btn h3 {
  font-size: 18px;
  font-weight: 400;
  color: #b2b5be;
  margin-bottom: 15px;
  transition: color var(--transition-fast);
}

.tab-circle {
  width: 14px;
  height: 14px;
  border: 2px solid #e3e5ec;
  border-radius: 50%;
  background-color: #fff;
  position: absolute;
  bottom: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-fast);
}

.tab-circle span {
  display: block;
  width: 6px;
  height: 6px;
  background-color: transparent;
  border-radius: 50%;
  transition: background-color var(--transition-fast);
}

/* Tab Hover & Active States */
.tab-btn:hover i, .tab-btn:hover h3,
.tab-btn.active i, .tab-btn.active h3 {
  color: var(--color-primary);
}

.tab-btn.active .tab-circle {
  border-color: var(--color-primary);
}

.tab-btn.active .tab-circle span {
  background-color: var(--color-primary);
}

/* Tab Panels Content */
.tab-panels {
  max-width: 1000px;
  margin: 0 auto;
}

.tab-panel {
  display: none;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.tab-panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.tab-panel p {
  font-size: 18px;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.tab-panel b {
  color: var(--color-text-dark);
}

/* Pricing Section */
.pricing-section {
  padding: 100px 0;
  background-color: var(--color-bg-gray);
  text-align: center;
}

.pricing-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 35px;
}

.pricing-title strong {
  color: var(--color-primary);
}

/* Testimonials Section */
.testimonials-section {
  padding: 100px 0;
  background-color: var(--color-bg-white);
  text-align: center;
}

.testimonials-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  height: 350px;
}

.testimonial-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.testimonial-item.active {
  opacity: 1;
  visibility: visible;
}

.testimonial-text {
  font-size: 20px;
  line-height: 1.7;
  color: var(--color-text-muted);
  font-style: italic;
  margin-bottom: 30px;
}

.testimonial-image {
  width: 80px;
  height: 80px;
  margin: 0 auto 15px auto;
  border-radius: 50%;
  overflow: hidden;
}

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

.testimonial-author {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.testimonial-author span {
  display: block;
  font-size: 14px;
  color: var(--color-text-muted);
  font-weight: 400;
  margin-top: 5px;
}

/* Carousel Indicators */
.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 30px;
}

.testimonial-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #cbd5e1;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.testimonial-dot.active {
  background-color: var(--color-primary);
}

/* Clients Carousel Section */
.clients-section {
  padding: 80px 0;
  background-color: var(--color-bg-white);
  border-top: 1px solid var(--color-bg-gray);
  overflow: hidden;
}

.clients-track {
  display: flex;
  align-items: center;
  gap: 50px;
  width: max-content;
  animation: scroll-left 25s linear infinite;
}

.client-logo {
  height: 60px;
  flex-shrink: 0;
}

.client-logo img {
  height: 100%;
  width: auto;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all var(--transition-fast);
}

.client-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-50% - 25px)); }
}

/* Parallax CTA Section */
.parallax-cta {
  background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('wp-jpg/kkcbg.jpg');
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  padding: 100px 0;
  text-align: center;
  color: var(--color-text-light);
}

.parallax-cta h3 {
  font-size: 34px;
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Footer Section */
.footer {
  background-color: var(--color-bg-blue-tint);
  padding: 80px 0 40px 0;
  border-bottom: 20px solid var(--color-bg-blue-tint-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.footer-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-dark);
  margin-bottom: 10px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 16px;
  color: var(--color-text-muted);
}

.contact-item i {
  font-size: 18px;
  color: var(--color-text-muted);
}

.contact-item:hover, .contact-item:hover i {
  color: var(--color-primary);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-logo {
  width: 200px;
}

.footer-brand p {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: 15px;
}

.social-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background-color: var(--color-bg-white);
  box-shadow: 0 10px 10px rgba(45, 45, 71, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 16px;
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  transform: translateY(-2px);
}

/* Floating Widgets */
.whatsapp-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  border-radius: 30px;
  box-shadow: 0px 3px 10px rgba(37, 211, 102, 0.5);
  z-index: 9999;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 14px;
}

.whatsapp-widget:hover {
  background-color: #20ba59;
  box-shadow: 0px 5px 15px rgba(37, 211, 102, 0.6);
}

#back-to-top {
  position: fixed;
  bottom: 20px;
  left: 20px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background-color: var(--color-bg-white);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  cursor: pointer;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

#back-to-top svg {
  width: 20px;
  height: 20px;
  fill: var(--color-secondary);
  transition: fill var(--transition-fast);
}

#back-to-top:hover svg {
  fill: var(--color-primary);
}

/* Contact Modal Popup */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(50, 50, 50, 0.5);
  backdrop-filter: blur(2px);
}

.modal-content {
  position: relative;
  background-color: var(--color-bg-white);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.2);
  z-index: 10;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.modal.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text-muted);
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-primary);
}

.modal h3 {
  font-size: 22px;
  color: var(--color-text-dark);
  margin-bottom: 25px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 18px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
  background-color: #fafafa;
  font-size: 15px;
  color: var(--color-text-dark);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  background-color: #fff;
}

.submit-button {
  width: 100%;
  margin-top: 10px;
}

.form-response {
  margin-top: 15px;
  display: none;
}

.success-message {
  color: #10b981;
  font-size: 15px;
  text-align: center;
}

/* Font Awesome and elegant icons helper classes */
.fas, .fab {
  font-family: 'Font Awesome 5 Brands', 'Font Awesome 5 Free';
  font-weight: 900;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1200px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .provide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 80px;
  }
  
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 38px;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .hero-graphics {
    height: 450px;
  }
  
  .why-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }
  
  .why-images {
    height: 380px;
    max-width: 500px;
    margin: 0 auto;
  }
  
  .comprehensive-grid {
    grid-template-columns: 1fr;
    gap: 50px;
    text-align: center;
  }
  
  .tab-nav {
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
  
  .header {
    height: var(--header-height-mobile);
  }
  
  .header.sticky {
    height: var(--header-height-mobile);
  }
  
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .install-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .provide-grid {
    grid-template-columns: 1fr;
  }
  
  .tab-nav-wrapper {
    overflow-x: auto;
    justify-content: flex-start;
  }
  
  .tab-nav {
    padding-bottom: 10px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    gap: 15px;
  }
  
  .hero-content h1 {
    font-size: 30px;
  }
  
  .hero-graphics {
    height: 300px;
  }
}