/* ============================================
   ELEGANT PROJECTS - GLOBAL STYLES
   Premium Interior Design Website
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
  /* Brand Colors */
  --primary-gold: #D4AF37;
  --primary-gold-light: #E8D4A0;
  --primary-gold-dark: #B8941F;
  --dark-charcoal: #2C2C2C;
  --medium-charcoal: #4A4A4A;
  --light-charcoal: #6B6B6B;
  --off-white: #FAF9F6;
  --pure-white: #FFFFFF;
  --cream: #F5F5DC;
  
  /* Semantic Colors */
  --text-primary: #2C2C2C;
  --text-secondary: #6B6B6B;
  --text-light: #9A9A9A;
  --bg-primary: #FFFFFF;
  --bg-secondary: #FAF9F6;
  --bg-dark: #2C2C2C;
  
  /* Accent Colors */
  --accent-success: #4CAF50;
  --accent-error: #F44336;
  --accent-warning: #FF9800;
  --accent-info: #2196F3;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
  --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);
  
  /* Typography */
  --font-primary: 'Playfair Display', serif;
  --font-secondary: 'Inter', sans-serif;
  --font-accent: 'Montserrat', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-width: 1400px;
  --header-height: 80px;
}

/* ===== RESET & BASE STYLES ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-secondary);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--dark-charcoal);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h5 {
  font-size: clamp(1.1rem, 2vw, 1.5rem);
}

h6 {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

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

a:hover {
  color: var(--primary-gold);
}

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

/* ===== LAYOUT COMPONENTS ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: 1000px;
}

.container-wide {
  max-width: 1600px;
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-sm {
  padding: var(--spacing-2xl) 0;
}

.section-lg {
  padding: 5rem 0;
}

/* ===== GRID SYSTEM ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===== FLEXBOX UTILITIES ===== */
.flex {
  display: flex;
}

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

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

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

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-accent);
  font-size: 0.9375rem;
  font-weight: 600;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  line-height: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-gold) 0%, var(--primary-gold-dark) 100%);
  color: var(--pure-white);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-gold-dark) 0%, var(--primary-gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(212, 175, 55, 0.4);
}

.btn-secondary {
  background: var(--dark-charcoal);
  color: var(--pure-white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: var(--medium-charcoal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--primary-gold);
  border: 2px solid var(--primary-gold);
}

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

.btn-outline-white {
  background: transparent;
  color: var(--pure-white);
  border: 2px solid var(--pure-white);
}

.btn-outline-white:hover {
  background: var(--pure-white);
  color: var(--dark-charcoal);
  border-color: var(--pure-white);
}

.btn-lg {
  padding: 1.125rem 2.5rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* ===== HEADER/NAVIGATION ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--pure-white);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
}

.header-content {
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  height: 40px;
  width: 120px;
}

.nav {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav-link {
  font-family: var(--font-accent);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  width: 28px;
  height: 3px;
  background: var(--dark-charcoal);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--dark-charcoal) 0%, var(--medium-charcoal) 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    linear-gradient(45deg, rgba(212, 175, 55, 0.1) 0%, transparent 100%),
    radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--pure-white);
}

.hero-title {
  color: var(--pure-white);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--primary-gold-light);
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
  animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-text {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  animation: fadeInUp 1s ease 0.4s backwards;
}

.hero .btn-group {
  justify-content: center;
  animation: fadeInUp 1s ease 0.6s backwards;
}

/* ===== SECTION HEADERS ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-subtitle {
  font-family: var(--font-accent);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

.section-description {
  max-width: 700px;
  margin: 0 auto;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* ===== STATS/NUMBERS ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-lg);
}

.stat-number {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--primary-gold);
  font-family: var(--font-primary);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-family: var(--font-accent);
  font-size: 0.9375rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* ===== SERVICE CARDS ===== */
.service-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-gold-light) 0%, var(--primary-gold) 100%);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--pure-white);
  transition: all var(--transition-normal);
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(5deg);
}

.service-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

/* ===== TESTIMONIALS ===== */
.testimonial-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial-quote {
  font-size: 1.125rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 3px solid var(--primary-gold);
}

.testimonial-name {
  font-weight: 600;
  color: var(--dark-charcoal);
  margin-bottom: 0.25rem;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--text-light);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-family: var(--font-accent);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--dark-charcoal);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-secondary);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 2px solid #E0E0E0;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-light);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--dark-charcoal);
  color: var(--pure-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: var(--primary-gold);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
  color: var(--primary-gold);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  font-size: 1.125rem;
  transition: all var(--transition-fast);
}

.social-icon:hover {
  background: var(--primary-gold);
  color: var(--pure-white);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9375rem;
}

/* ===== WHATSAPP FLOATING BUTTON ===== */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: var(--pure-white);
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.5);
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: 100px;
  right: 30px;
  z-index: 999;
  width: 50px;
  height: 50px;
  background: var(--primary-gold);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--pure-white);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.fade-in {
  animation: fadeIn 1s ease;
}

.fade-in-up {
  animation: fadeInUp 1s ease;
}

.slide-in-left {
  animation: slideInLeft 1s ease;
}

.slide-in-right {
  animation: slideInRight 1s ease;
}

.scale-in {
  animation: scaleIn 0.5s ease;
}

/* Intersection Observer Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-gold { color: var(--primary-gold); }
.text-white { color: var(--pure-white); }

.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-dark { background: var(--bg-dark); }
.bg-gold { background: var(--primary-gold); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  :root {
    --spacing-3xl: 4rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --spacing-3xl: 3rem;
    --spacing-2xl: 2.5rem;
  }
  
  .nav {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--pure-white);
    flex-direction: column;
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
    transition: left var(--transition-normal);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
  }
  
  .nav.active {
    left: 0;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }
  
  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-group .btn {
    width: 100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .whatsapp-float {
    width: 55px;
    height: 55px;
    bottom: 20px;
    right: 20px;
  }
  
  .back-to-top {
    bottom: 85px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }
  
  .stats {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero {
    min-height: 100svh;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .header,
  .footer,
  .whatsapp-float,
  .back-to-top,
  .btn {
    display: none;
  }
  
  body {
    color: #000;
    background: #fff;
  }
}