/*
 * Sri Malathy Construction - Stylesheet
 * Custom Premium Design System
 */

/* Google Fonts - Montserrat & Poppins */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=Poppins:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
  --primary: #E04E39;      /* Logo Red-Orange */
  --secondary: #F98435;    /* Logo Yellow-Orange */
  --primary-gradient: linear-gradient(135deg, #F98435 0%, #E04E39 100%);
  --primary-gradient-hover: linear-gradient(135deg, #E04E39 0%, #C62828 100%);
  --dark: #111111;         /* Off-black */
  --dark-accent: #1D1D1D;  /* Charcoal */
  --light: #F8F9FA;        /* Off-white */
  --grey: #E9ECEF;         /* Light grey */
  --border-color: #DEE2E6; /* Border grey */
  
  --text-dark: #1F1F1F;
  --text-light: #FFFFFF;
  --text-muted: #6C757D;
  
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Poppins', sans-serif;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
  
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 24px;
}

/* Reset & 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(--text-dark);
  background-color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark);
}

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

ul {
  list-style: none;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light);
}

::-webkit-scrollbar-thumb {
  background: #CCCCCC;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* Common Components & Helper Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

@media (max-width: 768px) {
  .section-padding {
    padding: 60px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
}

.section-header .subtitle {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  font-weight: 600;
  display: block;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
  padding-bottom: 15px;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-normal);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-light);
  box-shadow: 0 4px 15px rgba(224, 78, 57, 0.3);
}

.btn-primary:hover {
  background: var(--primary-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(224, 78, 57, 0.4);
}

.btn-outline {
  border-color: var(--text-light);
  color: var(--text-light);
  background: transparent;
}

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

.btn-dark-outline {
  border-color: var(--dark);
  color: var(--dark);
  background: transparent;
}

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

/* Glassmorphism utility */
.glass-panel {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.glass-panel-dark {
  background: rgba(29, 29, 29, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-normal);
  padding: 20px 0;
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 12px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header.scrolled .nav-link {
  color: var(--dark);
}

.header.scrolled .logo-text,
.header.scrolled .logo-subtext {
  color: var(--dark);
}

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

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 50px;
  width: auto;
  border-radius: var(--border-radius-sm);
  background: white;
  padding: 2px;
}

.logo-details {
  display: flex;
  flex-direction: column;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-light);
  line-height: 1.1;
  letter-spacing: 0.5px;
  transition: var(--transition-normal);
}

.logo-subtext {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-top: 2px;
  transition: var(--transition-normal);
}

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

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
  position: relative;
  padding: 6px 0;
}

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

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

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

/* Burger Menu */
.burger {
  display: none;
  cursor: pointer;
  background: transparent;
  border: none;
  outline: none;
  z-index: 1001;
}

.burger div {
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  margin: 5px;
  transition: var(--transition-normal);
}

.header.scrolled .burger div {
  background-color: var(--dark);
}

/* Mobile Nav Open state */
.burger.toggle .line1 {
  transform: rotate(-45deg) translate(-5px, 6px);
}
.burger.toggle .line2 {
  opacity: 0;
}
.burger.toggle .line3 {
  transform: rotate(45deg) translate(-5px, -6px);
}

@media (max-width: 992px) {
  .burger {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    right: -100%;
    top: 0;
    height: 100vh;
    width: 300px;
    background: var(--dark);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transition: var(--transition-slow);
    box-shadow: -5px 0 25px rgba(0,0,0,0.3);
  }
  
  .nav-menu.nav-active {
    right: 0;
  }
  
  .nav-link {
    color: var(--text-light) !important;
    font-size: 1.1rem;
  }
}

/* Hero Section */
.hero {
  height: 100vh;
  position: relative;
  background: url('assets/hero_bg.png') no-repeat center center/cover;
  display: flex;
  align-items: center;
  color: var(--text-light);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(17, 17, 17, 0.85) 0%, rgba(17, 17, 17, 0.5) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin-top: 80px;
}

.hero-tagline {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--secondary);
  margin-bottom: 20px;
  display: inline-block;
  background: rgba(249, 132, 53, 0.1);
  padding: 6px 16px;
  border-left: 3px solid var(--secondary);
}

.hero h1 {
  font-size: 4rem;
  color: var(--text-light);
  margin-bottom: 24px;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero h1 span {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  line-height: 1.8;
  max-width: 650px;
}

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

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.8rem;
  }
  .hero p {
    font-size: 1rem;
  }
}

/* About Us Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

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

.about-content h3 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: var(--dark);
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
}

.about-highlight {
  border-left: 4px solid var(--primary);
  padding-left: 20px;
  margin: 30px 0;
  font-style: italic;
  color: var(--dark);
  font-weight: 500;
  font-size: 1.05rem;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
}

.about-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.about-detail-item i {
  color: var(--primary);
  font-size: 1.25rem;
  margin-top: 3px;
}

.about-detail-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.about-detail-item p {
  font-size: 0.85rem;
  margin: 0;
}

.about-image-wrapper {
  position: relative;
  padding: 20px;
}

.about-img {
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
}

.about-image-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80%;
  height: 80%;
  background: var(--primary-gradient);
  opacity: 0.15;
  border-radius: var(--border-radius-md);
  z-index: 1;
}

.about-badge {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 3;
  padding: 24px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-badge .number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.about-badge .label {
  font-size: 0.8rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  margin-top: 4px;
  color: var(--dark);
}

/* Our Services Section */
.services {
  background-color: var(--grey);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--text-light);
  padding: 40px 30px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  border-bottom: 3px solid transparent;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--primary);
}

.service-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-sm);
  background: rgba(224, 78, 57, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: var(--transition-normal);
}

.service-icon-box i {
  font-size: 1.8rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.service-card:hover .service-icon-box i {
  -webkit-text-fill-color: var(--text-light);
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 14px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Why Choose Us Section */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.why-card {
  background: var(--text-light);
  padding: 30px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 20px;
  transition: var(--transition-normal);
}

.why-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.why-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(249, 132, 53, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.why-icon i {
  color: var(--secondary);
  font-size: 1.25rem;
}

.why-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.why-content p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* Our Promise Section */
.promise-section {
  padding: 0;
  position: relative;
  z-index: 5;
}

.promise-box {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 80px;
  margin-bottom: -100px;
  position: relative;
  z-index: 10;
  overflow: hidden;
}

.promise-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('assets/hero_bg.png') no-repeat center center/cover;
  opacity: 0.08;
  z-index: -1;
}

.promise-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 992px) {
  .promise-box {
    padding: 40px;
    margin-bottom: -60px;
  }
  .promise-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.promise-left h2 {
  color: var(--text-light);
  font-size: 2.5rem;
  margin-bottom: 24px;
}

.promise-left p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.05rem;
  margin-bottom: 30px;
}

.promise-tagline {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--secondary);
  font-weight: 700;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
}

.promise-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 576px) {
  .promise-list {
    grid-template-columns: 1fr;
  }
}

.promise-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.92rem;
}

.promise-item i {
  color: var(--secondary);
  font-size: 1rem;
}

/* Statistics Section */
.statistics {
  background: linear-gradient(135deg, rgba(17, 17, 17, 0.92) 0%, rgba(29, 29, 29, 0.95) 100%), url('assets/hero_bg.png') no-repeat center center/cover;
  color: var(--text-light);
  text-align: center;
  padding-top: 180px; /* Offset the overlapping promise-box */
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
}

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
  font-family: var(--font-heading);
}

.stat-label {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
}

/* Contact Section */
.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.contact-card {
  background: var(--text-light);
  padding: 40px 30px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition-normal);
  border: 1px solid rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.contact-card-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(224, 78, 57, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
  margin-bottom: 24px;
  transition: var(--transition-normal);
}

.contact-card:hover .contact-card-icon {
  background: var(--primary-gradient);
  color: var(--text-light);
}

.contact-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.contact-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.contact-card a:hover {
  color: var(--primary);
}

/* Footer */
.footer {
  background: var(--dark);
  color: var(--text-light);
  padding: 80px 0 30px 0;
  border-top: 4px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
  gap: 40px;
  margin-bottom: 60px;
}

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

@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.footer-col h3 {
  color: var(--text-light);
  font-size: 1.2rem;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary);
}

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-logo-img {
  height: 48px;
  background: white;
  padding: 2px;
  border-radius: var(--border-radius-sm);
}

.footer-about p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.social-btn:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
  display: inline-block;
}

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

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.9rem;
}

.footer-contact-item {
  display: flex;
  gap: 12px;
}

.footer-contact-item i {
  color: var(--primary);
  font-size: 1rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

.copyright {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links a:hover {
  color: var(--primary);
}

/* Scroll to Top Button */
.scroll-top-btn {
  position: fixed;
  bottom: 30px;
  right: -60px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: var(--text-light);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  transition: var(--transition-normal);
  border: none;
  outline: none;
}

.scroll-top-btn.visible {
  right: 30px;
}

.scroll-top-btn:hover {
  transform: translateY(-5px);
  background: var(--primary-gradient-hover);
  box-shadow: var(--shadow-lg);
}

.scroll-top-btn i {
  font-size: 1.2rem;
}

/* Page Loader */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--dark);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-slow);
}

.page-loader.fade-out {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Animation utilities for scroll-reveal */
.reveal {
  position: relative;
  opacity: 0;
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-up {
  transform: translateY(40px);
}

.reveal-left {
  transform: translateX(-40px);
}

.reveal-right {
  transform: translateX(40px);
}

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