/* ==========================================================================
   SAMVARA RESIDENCE — MODERN HOUSING & PROPERTY LANDING PAGE
   Design Concept: "MORE THAN A HOUSE, A BETTER WAY TO LIVE"
   Aesthetic: Modern, Warm, Premium, Architectural, Editorial
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Primary Warm Tones */
  --color-warm-white: #FAF8F5;
  --color-soft-beige: #F3ECE2;
  --color-cream: #E9DFD3;
  --color-stone-light: #E0D7CC;
  --color-stone-gray: #C4BBB0;

  /* Secondary Architectural Tones */
  --color-deep-green: #1B382B;
  --color-deep-green-dark: #12261D;
  --color-deep-green-light: #2A4F3E;
  --color-olive-green: #485E4D;
  --color-natural-gray: #6B7270;
  --color-natural-dark: #2B332F;
  --color-charcoal-dark: #111714;
  --color-dark-surface: #18201B;

  /* Subtle Warm Accents */
  --color-terracotta: #C4683C;
  --color-terracotta-hover: #AF582E;
  --color-warm-gold: #C59A4E;
  --color-warm-gold-hover: #AE8338;
  --color-sand: #E3D8C8;

  /* Typography */
  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s ease-out;

  /* Shadows */
  --shadow-soft: 0 10px 30px -10px rgba(27, 56, 43, 0.08);
  --shadow-medium: 0 20px 40px -15px rgba(27, 56, 43, 0.12);
  --shadow-elevated: 0 30px 60px -20px rgba(17, 23, 20, 0.2);
  --shadow-glass: 0 8px 32px 0 rgba(27, 56, 43, 0.06);

  /* Container */
  --container-max: 1320px;
}

/* --------------------------------------------------------------------------
   2. Base & Reset
   -------------------------------------------------------------------------- */
*, *::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-sans);
  background-color: var(--color-warm-white);
  color: var(--color-natural-dark);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
}

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

button, input, select, textarea {
  font-family: inherit;
}

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

ul {
  list-style: none;
}

/* Selection highlight */
::selection {
  background-color: var(--color-terracotta);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   3. Typography Utility
   -------------------------------------------------------------------------- */
.font-serif {
  font-family: var(--font-serif);
}

.font-sans {
  font-family: var(--font-sans);
}

.heading-editorial {
  font-family: var(--font-serif);
  letter-spacing: -0.02em;
  font-weight: 500;
  line-height: 1.15;
}

.subheading-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--color-terracotta);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.subheading-label::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1.5px;
  background-color: var(--color-terracotta);
}

/* --------------------------------------------------------------------------
   4. Layout Containers
   -------------------------------------------------------------------------- */
.site-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 768px) {
  .site-container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

@media (min-width: 1280px) {
  .site-container {
    padding-left: 3rem;
    padding-right: 3rem;
  }
}

.section-spacing {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

@media (min-width: 1024px) {
  .section-spacing {
    padding-top: 7.5rem;
    padding-bottom: 7.5rem;
  }
}

/* --------------------------------------------------------------------------
   5. Buttons & Interactive Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.btn svg {
  transition: transform 0.3s ease;
}

.btn:hover svg {
  transform: translateX(4px);
}

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

.btn-primary:hover {
  background-color: var(--color-deep-green-dark);
  border-color: var(--color-deep-green-dark);
  box-shadow: 0 10px 20px -8px rgba(27, 56, 43, 0.4);
}

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

.btn-terracotta:hover {
  background-color: var(--color-terracotta-hover);
  border-color: var(--color-terracotta-hover);
  box-shadow: 0 10px 20px -8px rgba(196, 104, 60, 0.45);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-deep-green);
  border-color: rgba(27, 56, 43, 0.3);
}

.btn-secondary:hover {
  background-color: var(--color-soft-beige);
  border-color: var(--color-deep-green);
}

.btn-ghost-white {
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
}

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

.btn-white-solid {
  background-color: #ffffff;
  color: var(--color-deep-green);
  border-color: #ffffff;
}

.btn-white-solid:hover {
  background-color: var(--color-warm-white);
  box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.25);
  color: var(--color-deep-green-dark);
}

/* --------------------------------------------------------------------------
   6. Navigation Bar
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.35rem 0;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(18, 38, 29, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.25);
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar .nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.9);
  position: relative;
  padding-bottom: 4px;
}

.navbar.scrolled .nav-link {
  color: rgba(255, 255, 255, 0.9);
}

.navbar .nav-link:hover,
.navbar .nav-link.active,
.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
  color: #ffffff;
}

.navbar .nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1.5px;
  background-color: var(--color-terracotta);
  transition: width 0.3s ease;
}

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

.navbar .nav-brand-text {
  color: #ffffff;
  transition: color 0.3s ease;
}

.navbar.scrolled .nav-brand-text {
  color: #ffffff;
}

.navbar.scrolled .nav-brand-subtitle {
  color: rgba(255, 255, 255, 0.75);
}

.navbar .nav-brand-subtitle {
  color: rgba(255, 255, 255, 0.75);
}

.navbar .nav-toggle-icon span {
  background-color: #ffffff;
}

.navbar.scrolled .nav-toggle-icon span {
  background-color: #ffffff;
}

/* --------------------------------------------------------------------------
   7. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  padding-bottom: 4rem;
  background-color: var(--color-deep-green-dark);
  overflow: hidden;
}

.hero-background-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.04);
  transition: transform 10s ease-out;
  filter: brightness(0.85);
}

.hero-section:hover .hero-background-img {
  transform: scale(1.0);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(18, 38, 29, 0.65) 0%,
    rgba(18, 38, 29, 0.45) 45%,
    rgba(18, 38, 29, 0.88) 100%
  );
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.15rem;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 9999px;
  color: #ffffff;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-badge-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-terracotta);
  box-shadow: 0 0 0 rgba(196, 104, 60, 0.6);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(196, 104, 60, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(196, 104, 60, 0); }
  100% { box-shadow: 0 0 0 0 rgba(196, 104, 60, 0); }
}

/* --------------------------------------------------------------------------
   8. Introduction Section & Stats
   -------------------------------------------------------------------------- */
.stat-item {
  border-left: 2px solid var(--color-cream);
  padding-left: 1.5rem;
  transition: border-color 0.3s ease;
}

.stat-item:hover {
  border-left-color: var(--color-terracotta);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 3.5rem;
  font-weight: 500;
  line-height: 1;
  color: var(--color-deep-green);
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-natural-gray);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   9. About Residence Section
   -------------------------------------------------------------------------- */
.about-image-frame {
  position: relative;
  overflow: hidden;
}

.about-image-frame img {
  transition: transform 0.8s ease;
}

.about-image-frame:hover img {
  transform: scale(1.03);
}

.pillar-item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.25rem;
  border-bottom: 1px solid var(--color-cream);
  transition: background-color 0.3s ease;
}

.pillar-item:hover {
  background-color: rgba(243, 236, 226, 0.4);
}

.pillar-number {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-terracotta);
  font-weight: 600;
  line-height: 1;
  min-width: 2rem;
}

/* --------------------------------------------------------------------------
   10. House Types Section & Tabs
   -------------------------------------------------------------------------- */
.type-tab-btn {
  padding: 1rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background-color: transparent;
  color: var(--color-natural-gray);
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.type-tab-btn:hover {
  color: var(--color-deep-green);
}

.type-tab-btn.active {
  color: var(--color-deep-green);
  border-bottom-color: var(--color-terracotta);
}

.type-spec-badge {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.25rem;
  background-color: var(--color-soft-beige);
  border-radius: 4px;
}

.type-spec-badge .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-natural-gray);
}

.type-spec-badge .value {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-deep-green);
  margin-top: 0.2rem;
}

/* --------------------------------------------------------------------------
   11. Floor Plan Section
   -------------------------------------------------------------------------- */
.floorplan-card {
  background: #ffffff;
  border: 1px solid var(--color-cream);
  box-shadow: var(--shadow-soft);
  position: relative;
  border-radius: 4px;
}

.floorplan-tab-btn {
  padding: 0.65rem 1.4rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid var(--color-stone-light);
  background: transparent;
  color: var(--color-natural-gray);
}

.floorplan-tab-btn.active {
  background: var(--color-deep-green);
  color: #ffffff;
  border-color: var(--color-deep-green);
}

/* --------------------------------------------------------------------------
   12. Facilities Cards
   -------------------------------------------------------------------------- */
.facility-card {
  position: relative;
  border-radius: 6px;
  overflow: hidden;
  background-color: #ffffff;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
}

.facility-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
}

.facility-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform 0.8s ease;
}

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

/* --------------------------------------------------------------------------
   13. Lifestyle Section
   -------------------------------------------------------------------------- */
.lifestyle-grid-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  height: 380px;
}

.lifestyle-grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.lifestyle-grid-item:hover img {
  transform: scale(1.05);
}

.lifestyle-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.75rem;
  background: linear-gradient(to top, rgba(18, 38, 29, 0.9) 0%, rgba(18, 38, 29, 0.4) 65%, transparent 100%);
  color: #ffffff;
  transform: translateY(6px);
  transition: var(--transition-smooth);
}

.lifestyle-grid-item:hover .lifestyle-caption {
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   14. Location & Travel Times
   -------------------------------------------------------------------------- */
.location-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--color-cream);
}

.location-time-badge {
  min-width: 90px;
  padding: 0.5rem 0.75rem;
  background-color: var(--color-soft-beige);
  color: var(--color-deep-green);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.88rem;
  text-align: center;
  border-radius: 4px;
  border: 1px solid var(--color-cream);
}

/* --------------------------------------------------------------------------
   15. Value Proposition Grid
   -------------------------------------------------------------------------- */
.value-prop-card {
  padding: 2.25rem;
  background-color: #ffffff;
  border: 1px solid var(--color-cream);
  transition: var(--transition-smooth);
  position: relative;
}

.value-prop-card:hover {
  border-color: var(--color-terracotta);
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}

.value-prop-index {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-terracotta);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* --------------------------------------------------------------------------
   16. Gallery Section & Filters
   -------------------------------------------------------------------------- */
.gallery-filter-btn {
  padding: 0.6rem 1.4rem;
  border: 1px solid var(--color-stone-light);
  background: transparent;
  color: var(--color-natural-gray);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: 9999px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.gallery-filter-btn:hover {
  border-color: var(--color-deep-green);
  color: var(--color-deep-green);
}

.gallery-filter-btn.active {
  background-color: var(--color-deep-green);
  border-color: var(--color-deep-green);
  color: #ffffff;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border-radius: 4px;
  height: 290px;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-item-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(27, 56, 43, 0.6);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   17. Testimonial Section
   -------------------------------------------------------------------------- */
.testimonial-card {
  background-color: #ffffff;
  padding: 3rem 2.5rem;
  border: 1px solid var(--color-cream);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.testimonial-quote-mark {
  font-family: var(--font-serif);
  font-size: 5rem;
  line-height: 0.6;
  color: var(--color-cream);
  user-select: none;
}

/* --------------------------------------------------------------------------
   18. FAQ Accordion
   -------------------------------------------------------------------------- */
.faq-item {
  border-bottom: 1px solid var(--color-cream);
  padding: 1.5rem 0;
  transition: border-color 0.3s ease;
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-natural-dark);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-soft-beige);
  color: var(--color-deep-green);
  transition: transform 0.3s ease, background-color 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  background-color: var(--color-terracotta);
  color: #ffffff;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  color: var(--color-natural-gray);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-content {
  padding-top: 1rem;
}

/* --------------------------------------------------------------------------
   19. Floating WhatsApp Button
   -------------------------------------------------------------------------- */
.whatsapp-floating-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  background-color: #25D366;
  color: #ffffff;
  padding: 0.75rem 1.15rem 0.75rem 0.95rem;
  border-radius: 9999px;
  box-shadow: 0 10px 25px -4px rgba(37, 211, 102, 0.5);
  cursor: pointer;
  transition: var(--transition-smooth);
  gap: 0.65rem;
  text-decoration: none;
}

.whatsapp-floating-btn:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 32px -4px rgba(37, 211, 102, 0.6);
  background-color: #20BD5A;
}

.whatsapp-icon-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
}

.whatsapp-tooltip-text {
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .whatsapp-floating-btn {
    bottom: 1.25rem;
    right: 1.25rem;
    padding: 0.85rem;
  }
  .whatsapp-tooltip-text {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   20. Modal & Lightbox Styles
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(18, 38, 29, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #ffffff;
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 6px;
  padding: 2.5rem;
  box-shadow: var(--shadow-elevated);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0);
}

/* Lightbox Modal */
.lightbox-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(14, 20, 17, 0.95);
  backdrop-filter: blur(12px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   21. Animations & Scroll Reveal
   -------------------------------------------------------------------------- */
.reveal-fade {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-fade.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-warm-white);
}
::-webkit-scrollbar-thumb {
  background: var(--color-stone-gray);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-olive-green);
}