/* Import Google Fonts for a premium, elegant typography experience */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

/* Define Design Tokens & Themes */
:root {
  /* Default Luxury Dark Gold Theme */
  --bg-color: #0f0f11;
  --bg-secondary: #17171a;
  --text-primary: #f5f2eb;
  --text-secondary: #a09e99;
  --accent-color: #c5a880;
  --accent-secondary: #e2cfa8;
  --accent-dark: #9a7b56;
  --accent-rgb: 197, 168, 128;
  
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Outfit', sans-serif;
  
  --transition-smooth: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: all 0.2s ease;
  
  --glass-bg: rgba(23, 23, 26, 0.7);
  --glass-border: rgba(197, 168, 128, 0.15);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  --border-radius: 12px;
  --border-radius-large: 24px;
}

/* Theme Variations (Managed by JS) */
[data-theme="boho"] {
  --bg-color: #f7f3ec;
  --bg-secondary: #eee8dd;
  --text-primary: #3d3428;
  --text-secondary: #706553;
  --accent-color: #c08552;
  --accent-secondary: #e6a15c;
  --accent-dark: #945d31;
  --accent-rgb: 192, 133, 82;
  --glass-bg: rgba(238, 232, 221, 0.8);
  --glass-border: rgba(192, 133, 82, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(148, 93, 49, 0.08);
}

[data-theme="classic"] {
  --bg-color: #fafafa;
  --bg-secondary: #f0f0f2;
  --text-primary: #1a1a1c;
  --text-secondary: #5e5e66;
  --accent-color: #3b5249;
  --accent-secondary: #517164;
  --accent-dark: #22302a;
  --accent-rgb: 59, 82, 73;
  --glass-bg: rgba(240, 240, 242, 0.8);
  --glass-border: rgba(59, 82, 73, 0.15);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="emerald"] {
  --bg-color: #061611;
  --bg-secondary: #0a251d;
  --text-primary: #f0f6f4;
  --text-secondary: #9cb5ad;
  --accent-color: #d1b47b;
  --accent-secondary: #e6cb97;
  --accent-dark: #aa8d56;
  --accent-rgb: 209, 180, 123;
  --glass-bg: rgba(10, 37, 29, 0.8);
  --glass-border: rgba(209, 180, 123, 0.15);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

/* CSS Reset & General Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.8s ease, color 0.8s ease;
}

h1, h2, h3, h4, .font-serif {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.03em;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-secondary);
}

/* Text Selection */
::selection {
  background: var(--accent-color);
  color: var(--bg-color);
}

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

.section {
  padding: 100px 0;
  position: relative;
}

.section-subtitle {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.25em;
  color: var(--accent-color);
  margin-bottom: 12px;
  display: block;
  font-weight: 600;
  animation: fadeIn 1s ease-out;
}

.section-title {
  font-size: 2.8rem;
  margin-bottom: 24px;
  line-height: 1.2;
}

.section-title span {
  font-style: italic;
  color: var(--accent-color);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 40px;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
  color: var(--bg-color);
  border: 1px solid transparent;
  box-shadow: 0 4px 15px rgba(var(--accent-rgb), 0.2);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
  z-index: -1;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(var(--accent-rgb), 0.4);
  background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-color) 100%);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--accent-color);
}

.btn-secondary:hover {
  background: rgba(var(--accent-rgb), 0.1);
  color: var(--accent-secondary);
  transform: translateY(-3px);
}

/* Navigation Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  padding: 24px 0;
}

.navbar.scrolled {
  padding: 16px 0;
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.logo span {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--accent-color);
  font-family: var(--font-sans);
  margin-top: 4px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 400;
  transition: var(--transition-fast);
  position: relative;
  padding: 8px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--accent-color);
  transition: var(--transition-smooth);
}

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

.nav-links a:hover {
  color: var(--accent-color);
}

/* Mobile Menu Button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
}

.menu-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.7));
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: url('hero_decor.jpg');
  background-size: cover;
  background-position: center;
  transition: transform 12s ease;
  animation: zoomBg 20s infinite alternate;
}

@keyframes zoomBg {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}

.hero-content {
  max-width: 650px;
  color: #fff;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.2s cubic-bezier(0.25, 1, 0.5, 1) forwards;
  animation-delay: 0.3s;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 24px;
  line-height: 1.1;
  font-weight: 400;
}

.hero h1 span {
  font-style: italic;
  font-weight: 300;
  color: var(--accent-secondary);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 300;
  letter-spacing: 0.05em;
}

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

/* Decorative shapes for premium feeling */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 150px;
  background: linear-gradient(to top, var(--bg-color), transparent);
  pointer-events: none;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-img-container {
  position: relative;
}

.about-img-frame {
  border: 1px solid var(--accent-color);
  padding: 15px;
  border-radius: var(--border-radius-large);
  position: relative;
  overflow: hidden;
}

.about-img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: calc(var(--border-radius-large) - 15px);
  filter: grayscale(15%);
  transition: var(--transition-smooth);
}

.about-img-frame:hover .about-img {
  transform: scale(1.03);
  filter: grayscale(0%);
}

.about-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  padding: 24px 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--glass-shadow);
  text-align: center;
}

.about-badge h3 {
  font-size: 2.2rem;
  color: var(--accent-color);
  font-weight: 700;
  line-height: 1;
}

.about-badge p {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  margin-top: 4px;
}

.about-text p {
  margin-bottom: 24px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-top: 50px;
}

.service-card {
  background: var(--bg-secondary);
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-smooth);
  z-index: 10;
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--glass-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.25);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-img-container {
  height: 180px;
  width: 100%;
  overflow: hidden;
  position: relative;
}

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

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

.service-card-content {
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.service-link {
  color: var(--accent-color);
  text-decoration: none;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
  margin-top: auto;
}

.service-link span {
  transition: var(--transition-fast);
}

.service-card:hover .service-link {
  color: var(--accent-secondary);
}

.service-card:hover .service-link span {
  transform: translateX(5px);
}

.service-card:hover .service-link span {
  transform: translateX(5px);
}

/* INTERACTIVE THEME SIMULATOR / MOODBOARD */
.simulator {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-large);
  border: 1px solid var(--glass-border);
  padding: 60px;
  box-shadow: var(--glass-shadow);
  margin-top: 40px;
}

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

.sim-controls h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.sim-controls p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.theme-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.theme-btn {
  background: var(--bg-color);
  border: 1px solid var(--glass-border);
  padding: 20px;
  border-radius: var(--border-radius);
  cursor: pointer;
  text-align: left;
  transition: var(--transition-smooth);
  color: var(--text-primary);
}

.theme-btn.active {
  border-color: var(--accent-color);
  box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.25);
  background: rgba(var(--accent-rgb), 0.05);
}

.theme-btn:hover {
  transform: translateY(-3px);
  border-color: var(--accent-secondary);
}

.theme-preview-dots {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.theme-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.1);
}

.theme-btn h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.theme-btn span {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Simulator Visualizer Panel */
.sim-visualizer {
  position: relative;
  height: 400px;
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background-color: var(--bg-color);
  transition: background-color 0.8s ease;
}

.moodboard-container {
  width: 100%;
  height: 100%;
  position: relative;
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(12, 1fr);
  gap: 12px;
}

.mood-item {
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  position: relative;
}

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

.mood-item:hover {
  transform: scale(1.05) z-index: 10;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.mood-color-patch {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12px;
  color: #fff;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  transition: var(--transition-smooth);
}

/* Moodboard positions */
.mood-1 {
  grid-column: 1 / 7;
  grid-row: 1 / 8;
}
.mood-2 {
  grid-column: 7 / 13;
  grid-row: 1 / 5;
}
.mood-3 {
  grid-column: 7 / 10;
  grid-row: 5 / 9;
}
.mood-4 {
  grid-column: 10 / 13;
  grid-row: 5 / 9;
}
.mood-5 {
  grid-column: 1 / 4;
  grid-row: 8 / 13;
}
.mood-6 {
  grid-column: 4 / 13;
  grid-row: 9 / 13;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  border: 1px dashed var(--accent-color);
  color: var(--accent-color);
  background: rgba(var(--accent-rgb), 0.03);
}

/* Portfolio Section */
.portfolio-filters {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
}

.filter-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 8px 20px;
  cursor: pointer;
  transition: var(--transition-fast);
  border-radius: 20px;
}

.filter-btn:hover, .filter-btn.active {
  color: var(--accent-color);
  background: rgba(var(--accent-rgb), 0.08);
}

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

.portfolio-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  height: 380px;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  transition: var(--transition-smooth);
}

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

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
  opacity: 0;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
}

.portfolio-item:hover {
  transform: translateY(-8px);
}

.portfolio-item:hover img {
  transform: scale(1.08);
}

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

.portfolio-category {
  color: var(--accent-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.20em;
  margin-bottom: 8px;
}

.portfolio-item h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.portfolio-item p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
}

/* Testimonials */
.testimonials {
  background: var(--bg-secondary);
  overflow: hidden;
}

.testimonial-slider {
  max-width: 800px;
  margin: 40px auto 0;
  position: relative;
  height: 320px;
}

.testimonial-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, transform 0.8s ease;
  transform: translateX(30px);
  text-align: center;
}

.testimonial-slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.quote-icon {
  font-size: 3rem;
  color: var(--accent-color);
  opacity: 0.3;
  margin-bottom: 20px;
  display: inline-block;
  font-family: var(--font-serif);
}

.testimonial-text {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  line-height: 1.5;
  margin-bottom: 30px;
  color: var(--text-primary);
  font-style: italic;
}

.testimonial-author {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
  color: var(--accent-color);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 30px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-secondary);
  opacity: 0.3;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
}

.slider-dot.active {
  background: var(--accent-color);
  opacity: 1;
  transform: scale(1.2);
}

/* Contact Form Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.5rem;
  color: var(--accent-color);
  background: rgba(var(--accent-rgb), 0.08);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--glass-border);
}

.contact-item-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.contact-item-text p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-form-container {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  padding: 50px;
  border-radius: var(--border-radius);
  box-shadow: var(--glass-shadow);
}

.form-group {
  position: relative;
  margin-bottom: 32px;
}

.form-input {
  width: 100%;
  padding: 12px 0;
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--text-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-label {
  position: absolute;
  top: 12px;
  left: 0;
  color: var(--text-secondary);
  pointer-events: none;
  transition: var(--transition-fast);
  font-size: 1rem;
}

.form-input:focus ~ .form-label,
.form-input:valid ~ .form-label {
  top: -12px;
  font-size: 0.8rem;
  color: var(--accent-color);
}

.form-input:focus {
  border-bottom-color: var(--accent-color);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-feedback {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  display: none;
  animation: fadeIn 0.5s ease;
}

.form-feedback.success {
  display: block;
  background: rgba(59, 82, 73, 0.2);
  border: 1px solid #3b5249;
  color: #a4c2b5;
}

.form-feedback.error {
  display: block;
  background: rgba(192, 133, 82, 0.2);
  border: 1px solid #c08552;
  color: #f7d6b8;
}

/* Footer Section */
.footer {
  background: #09090b;
  padding: 80px 0 30px;
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand .logo {
  margin-bottom: 20px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  max-width: 280px;
}

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

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background: var(--accent-color);
  color: var(--bg-color);
  transform: translateY(-3px);
  border-color: var(--accent-color);
}

.footer-column h4 {
  font-size: 1.1rem;
  margin-bottom: 24px;
  position: relative;
  display: inline-block;
}

.footer-column h4::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 30px;
  height: 1.5px;
  background-color: var(--accent-color);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .section-title {
    font-size: 2.3rem;
  }
  .about-grid, .sim-grid, .contact-grid {
    gap: 40px;
  }
  .services-grid, .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* Hide standard links on mobile, toggled with class */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 30px 0;
    gap: 20px;
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .about-grid, .sim-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .services-grid, .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .hero h1 {
    font-size: 2.8rem;
  }
  
  .simulator {
    padding: 30px;
  }
  
  .sim-visualizer {
    height: 300px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  
  .about-badge {
    bottom: -10px;
    right: 10px;
    padding: 16px 20px;
  }
}

/* Floating WhatsApp Button */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #25d366;
  color: #fff;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
  z-index: 999;
  text-decoration: none;
  transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.whatsapp-float:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6);
  background-color: #20ba5a;
  color: #fff;
}

/* Pulse animation */
.whatsapp-float::before {
  content: '';
  position: absolute;
  top: -5px;
  left: -5px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 1.5px solid #25d366;
  animation: whatsappPulse 2s infinite;
  opacity: 0;
  pointer-events: none;
}

@keyframes whatsappPulse {
  0% {
    transform: scale(0.9);
    opacity: 0.8;
  }
  50% {
    opacity: 0.4;
  }
  100% {
    transform: scale(1.15);
    opacity: 0;
  }
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  .whatsapp-float::before {
    width: 60px;
    height: 60px;
  }
}