/* ==========================================================================
   NAHAR BUILDERS - Sanmar Luxury Architecture Design System & Style Sheet
   Inspired by mysanmar.com
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Jost:ital,wght@0,300;0,400;0,500;0,600;0,700;1,300;1,400&family=Hind+Siliguri:wght@400;500;600;700&display=swap');

:root {
  --primary-gold: #8A7257;
  --primary-gold-hover: #705944;
  --gold-light: #C2AF98;
  --gold-subtle: rgba(138, 114, 87, 0.12);
  --bg-cream: #F5F2EC;
  --bg-cream-card: #FAF8F5;
  --bg-dark: #11161B;
  --bg-dark-card: #181E24;
  --text-dark: #1F2429;
  --body-text: #525960;
  --body-text-light: #A0A7AE;
  --border-color: #E6E1DA;
  --border-gold: rgba(138, 114, 87, 0.3);
  --shadow-sm: 0 4px 12px rgba(17, 22, 27, 0.04);
  --shadow-md: 0 10px 25px rgba(17, 22, 27, 0.08);
  --shadow-lg: 0 20px 45px rgba(17, 22, 27, 0.14);
  --font-heading: 'Cormorant Garamond', serif;
  --font-body: 'Jost', sans-serif;
  --font-bengali: 'Hind Siliguri', sans-serif;
  --transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--body-text);
  background-color: var(--bg-cream);
  line-height: 1.7;
  letter-spacing: 0.2px;
  overflow-x: hidden;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

input, textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: 0.5px;
}

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

ul {
  list-style: none;
}

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

/* --- CONTAINER & LAYOUT --- */
.container {
  width: 90%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

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

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

.bg-dark {
  background-color: var(--bg-dark);
  color: #ffffff;
}

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

/* --- HEADER & NAVIGATION --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(245, 242, 236, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 15px rgba(17, 22, 27, 0.05);
  z-index: 1000;
  transition: var(--transition);
  border-bottom: 1px solid rgba(138, 114, 87, 0.15);
}

.header.scrolled {
  background: rgba(17, 22, 27, 0.96);
  border-bottom: 1px solid rgba(138, 114, 87, 0.3);
}

.header.scrolled .nav-link {
  color: #ffffff;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 90px;
}

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

.logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

.logo .logo-img-light {
  display: none;
}

.header.scrolled .logo .logo-img-dark {
  display: none;
}

.header.scrolled .logo .logo-img-light {
  display: block;
}

.logo:hover img {
  transform: scale(1.03);
}

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

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dark);
  position: relative;
  padding: 8px 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--primary-gold);
  transition: var(--transition);
  transform: translateX(-50%);
}

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

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  z-index: 1001;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  list-style: none;
}

.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dark);
  transition: var(--transition);
}

.dropdown-menu a:hover {
  background: var(--bg-cream);
  color: var(--primary-gold);
}

.header.scrolled .dropdown-menu {
  background: var(--bg-dark);
  border-color: rgba(138, 114, 87, 0.3);
}

.header.scrolled .dropdown-menu a {
  color: #ffffff;
}

.header.scrolled .dropdown-menu a:hover {
  background: rgba(138, 114, 87, 0.2);
  color: var(--gold-light);
}

.nav-btn {
  background: transparent;
  color: var(--text-dark) !important;
  border: 1px solid var(--primary-gold);
  padding: 10px 24px;
  border-radius: 2px;
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  transition: var(--transition);
}

.header.scrolled .nav-btn {
  color: #ffffff !important;
  border-color: var(--primary-gold);
}

.nav-btn:hover {
  background: var(--primary-gold);
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(138, 114, 87, 0.3);
}

.mobile-toggle {
  display: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--text-dark);
}

.header.scrolled .mobile-toggle {
  color: #ffffff;
}

/* --- BUTTONS & BADGES --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 34px;
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  gap: 10px;
}

.btn-gold {
  background: var(--primary-gold);
  color: #ffffff;
  border-color: var(--primary-gold);
}

.btn-gold:hover {
  background: var(--primary-gold-hover);
  border-color: var(--primary-gold-hover);
  box-shadow: 0 6px 20px rgba(138, 114, 87, 0.35);
  transform: translateY(-2px);
}

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

.btn-outline-gold:hover {
  background: var(--primary-gold);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--bg-dark);
  color: #ffffff;
}

.btn-dark:hover {
  background: #000000;
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
  background: #ffffff;
  color: var(--bg-dark);
  border-color: #ffffff;
}

.tag-gold {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary-gold);
  margin-bottom: 12px;
}

/* --- SECTION HEADINGS --- */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 60px auto;
}

.section-subtitle {
  color: var(--primary-gold);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.8rem;
  margin-bottom: 20px;
  color: var(--text-dark);
  font-weight: 500;
}

.bg-dark .section-title {
  color: #ffffff;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--body-text);
  font-weight: 300;
}

.bg-dark .section-desc {
  color: var(--body-text-light);
}

/* --- HERO SECTION (Sanmar Inspired 100vh Fullscreen Slider) --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 650px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
  margin-top: 0;
  padding-top: 90px;
}

.hero-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transform: scale(1.08);
  transition: opacity 1.2s ease-in-out, transform 6s ease-out;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(17, 22, 27, 0.6) 0%, rgba(17, 22, 27, 0.35) 45%, rgba(17, 22, 27, 0.85) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 3;
  width: 100%;
}

.hero-content {
  max-width: 1000px;
  position: relative;
  z-index: 3;
}

.hero-subtitle-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--gold-light);
  margin-bottom: 20px;
  padding-left: 20px;
  border-left: 2px solid var(--primary-gold);
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 400;
  color: #ffffff;
  margin-bottom: 25px;
  line-height: 1.1;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  font-weight: 300;
  max-width: 680px;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.hero-trust-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: rgba(255, 255, 255, 0.9);
  width: 100%;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.hero-trust-item i {
  color: var(--primary-gold);
  font-size: 1.1rem;
}

/* Slider Controls & Dots */
.hero-slider-controls {
  position: absolute;
  bottom: 40px;
  right: 5%;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-dots {
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.7);
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.hero-dot.active, .hero-dot:hover {
  background: var(--primary-gold);
  border-color: var(--primary-gold);
  transform: scale(1.25);
  box-shadow: 0 0 10px rgba(138, 114, 87, 0.6);
}

.hero-slider-arrows {
  display: flex;
  gap: 10px;
}

.hero-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(17, 22, 27, 0.45);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.hero-arrow:hover {
  background: var(--primary-gold);
  border-color: var(--primary-gold);
  color: #ffffff;
  transform: scale(1.05);
}

/* --- LOCATION & CATEGORY CARDS (Sanmar Grid) --- */
.category-strip {
  background: var(--bg-cream-card);
  padding: 60px 0;
  border-bottom: 1px solid var(--border-color);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.category-card {
  position: relative;
  height: 380px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  text-decoration: none;
  display: block;
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.category-card-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(17, 22, 27, 0.1) 0%, rgba(17, 22, 27, 0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 35px;
  transition: var(--transition);
}

.category-card:hover img {
  transform: scale(1.08);
}

.category-card:hover .category-card-overlay {
  background: linear-gradient(180deg, rgba(17, 22, 27, 0.2) 0%, rgba(17, 22, 27, 0.92) 100%);
}

.category-card-title {
  color: #ffffff;
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.category-card-sub {
  color: var(--gold-light);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 500;
}

/* --- PROJECT & SHOWCASE CARDS --- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 35px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
  gap: 45px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 30px;
}

.card {
  background: #ffffff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-gold);
}

.card-image {
  height: 280px;
  overflow: hidden;
  position: relative;
  background-color: #EFECE6;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.card:hover .card-image img {
  transform: scale(1.06);
}

.card-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 2;
  background: var(--bg-dark);
  color: var(--gold-light);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 6px 14px;
  border-radius: 2px;
}

.card-body {
  padding: 30px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 1.6rem;
  margin-bottom: 12px;
  color: var(--text-dark);
  font-weight: 500;
}

.card-text {
  color: var(--body-text);
  font-size: 0.95rem;
  margin-bottom: 25px;
  flex-grow: 1;
  font-weight: 300;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--body-text);
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  margin-top: auto;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* --- SANMAR DARK VISION BANNER --- */
.vision-banner {
  background: var(--bg-dark);
  color: #ffffff;
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.vision-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(138, 114, 87, 0.08) 0%, rgba(17, 22, 27, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.vision-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.vision-quote {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 400;
  line-height: 1.3;
  color: #ffffff;
  margin-bottom: 30px;
  font-style: italic;
}

.vision-author {
  color: var(--gold-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 40px;
}

/* --- ABOUT & LEADER SECTION --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.chairman-card {
  background: var(--bg-cream-card);
  border-left: 3px solid var(--primary-gold);
  padding: 35px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  margin-top: 30px;
}

.chairman-meta {
  margin-top: 20px;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-dark);
  font-family: var(--font-heading);
}

.chairman-title {
  font-size: 0.85rem;
  color: var(--primary-gold);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 500;
}

/* --- FILTER TABS --- */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 2px;
  background: transparent;
  border: 1px solid var(--border-color);
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--body-text);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--primary-gold);
  border-color: var(--primary-gold);
  color: #ffffff;
}

/* --- FORMS & INPUTS --- */
.form-group {
  margin-bottom: 25px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #ffffff;
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  color: var(--text-dark);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-gold);
  box-shadow: 0 0 0 3px rgba(138, 114, 87, 0.15);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

/* --- FOOTER (Sanmar Luxury Style) --- */
.footer {
  background: var(--bg-dark);
  color: var(--body-text-light);
  padding: 90px 0 30px 0;
  border-top: 1px solid rgba(138, 114, 87, 0.2);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 50px;
  margin-bottom: 70px;
}

.footer-col h3 {
  color: #ffffff;
  font-size: 1.3rem;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 12px;
  font-weight: 500;
}

.footer-col h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 1.5px;
  background: var(--primary-gold);
}

.footer-about p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--body-text-light);
  margin-bottom: 25px;
  font-weight: 300;
}

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

.footer-links a {
  color: var(--body-text-light);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links a:hover {
  color: var(--gold-light);
  padding-left: 6px;
}

.footer-contact li {
  display: flex;
  gap: 15px;
  margin-bottom: 18px;
  font-size: 0.9rem;
}

.footer-contact i {
  color: var(--primary-gold);
  margin-top: 5px;
  font-size: 1.1rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-bottom a {
  color: var(--primary-gold);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* --- RESPONSIVE STYLES --- */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .navbar { height: 80px; }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: var(--bg-dark);
    flex-direction: column;
    justify-content: flex-start;
    padding: 40px 30px;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }
  .nav-menu.active {
    left: 0;
  }
  .nav-link { color: #ffffff; }
  .mobile-toggle {
    display: block;
  }
  .hero { min-height: auto; padding: 120px 0 70px 0; margin-top: 80px; }
  .hero-title { font-size: 2.4rem; }
  .section-title { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .vision-quote { font-size: 2rem; }
}