/* ==========================================================================
   MASTER SOUND - Premium Global Audio & Cinema Engineering
   Theme: Obsidian Acoustic Luxury & Gold-Crimson Accents
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&family=Syne:wght@600;700;800&display=swap');

:root {
  /* Color System */
  --bg-deep: #08090D;
  --bg-dark: #0D1017;
  --bg-card: #131722;
  --bg-card-hover: #1A202E;
  --bg-surface: #21293B;
  --bg-elevated: #283247;
  
  --gold-primary: #C5A059;
  --gold-light: #E0C079;
  --gold-dark: #9D7B37;
  --gold-gradient: linear-gradient(135deg, #E6C87C 0%, #C5A059 50%, #9D7B37 100%);
  --gold-glow: rgba(197, 160, 89, 0.22);
  
  --red-accent: #E5232A;
  --red-hover: #F03D43;
  --red-glow: rgba(229, 35, 42, 0.35);
  --red-gradient: linear-gradient(135deg, #FF3D44 0%, #E5232A 60%, #B8141A 100%);
  
  --text-primary: #F8FAFC;
  --text-secondary: #A0ABBB;
  --text-muted: #64748B;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.15);
  --border-gold: rgba(197, 160, 89, 0.35);
  --border-gold-strong: rgba(197, 160, 89, 0.6);
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-brand: 'Syne', sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Layout */
  --container-max: 1320px;
  --nav-height: 84px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  /* Transitions & Shadows */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.65);
  --shadow-gold: 0 12px 36px -8px rgba(197, 160, 89, 0.28);
  --shadow-red: 0 12px 36px -8px rgba(229, 35, 42, 0.35);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg, picture {
  display: block;
  max-width: 100%;
}

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

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

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

.text-gold {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-red {
  color: var(--red-accent);
}

.tagline-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(197, 160, 89, 0.1);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 1.2rem;
}

.tagline-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red-accent);
  box-shadow: 0 0 8px var(--red-accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(8, 9, 13, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-smooth);
}

.site-header.scrolled {
  height: 72px;
  background: rgba(8, 9, 13, 0.94);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-bottom-color: var(--border-gold);
}

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

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

.brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

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

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  letter-spacing: 0.02em;
}

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

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-phone-quick {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.btn-phone-quick:hover {
  color: var(--text-primary);
  border-color: var(--border-gold);
  background: rgba(197, 160, 89, 0.08);
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   BUTTONS & CONTROLS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: none;
  text-align: center;
}

.btn-gold {
  background: var(--gold-gradient);
  color: #0A0C10;
  box-shadow: 0 4px 18px rgba(197, 160, 89, 0.28);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
  filter: brightness(1.08);
}

.btn-red {
  background: var(--red-gradient);
  color: #FFFFFF;
  box-shadow: 0 4px 18px rgba(229, 35, 42, 0.35);
}

.btn-red:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-red);
  filter: brightness(1.08);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-light);
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--gold-light);
  border: 1px solid var(--border-gold);
}

.btn-outline-gold:hover {
  background: rgba(197, 160, 89, 0.12);
  border-color: var(--gold-primary);
  color: #FFF;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 15px 34px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: calc(90vh - var(--nav-height));
  display: flex;
  align-items: center;
  padding: 70px 0 100px;
  background: radial-gradient(circle at 75% 35%, rgba(197, 160, 89, 0.12) 0%, transparent 60%),
              radial-gradient(circle at 20% 70%, rgba(229, 35, 42, 0.08) 0%, transparent 50%),
              var(--bg-deep);
  overflow: hidden;
}

.hero-backdrop-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 4.6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  line-height: 1.12;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.4vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 36px;
  max-width: 580px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.metric-item .number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}

.metric-item .label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* Hero Media Card / Visual Stage */
.hero-media-wrapper {
  position: relative;
}

.hero-main-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-gold);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.85),
              0 0 35px -5px var(--gold-glow);
  background: var(--bg-card);
}

.hero-main-card img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.hero-main-card:hover img {
  transform: scale(1.03);
}

.hero-badge-floating {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  padding: 16px 20px;
  background: rgba(13, 16, 23, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.badge-info h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.badge-info p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.badge-sound-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 22px;
}

.badge-sound-bars span {
  width: 3.5px;
  background: var(--gold-primary);
  border-radius: 2px;
  animation: soundBar 1.2s ease-in-out infinite alternate;
}

.badge-sound-bars span:nth-child(1) { height: 40%; animation-delay: 0.1s; }
.badge-sound-bars span:nth-child(2) { height: 90%; animation-delay: 0.3s; }
.badge-sound-bars span:nth-child(3) { height: 60%; animation-delay: 0.2s; }
.badge-sound-bars span:nth-child(4) { height: 100%; animation-delay: 0.4s; }

@keyframes soundBar {
  0% { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}

/* ==========================================================================
   BRANDS TICKER / MARQUEE
   ========================================================================== */
.brand-ticker-section {
  padding: 38px 0;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.ticker-label {
  text-align: center;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 24px;
}

.marquee-container {
  display: flex;
  overflow: hidden;
  user-select: none;
  mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 60px;
  animation: marqueeScroll 35s linear infinite;
  flex-shrink: 0;
  padding: 0 30px;
}

.marquee-track img {
  height: 38px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  opacity: 0.75;
  filter: grayscale(100%) brightness(1.6);
  transition: all var(--transition-fast);
}

.marquee-track img:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(1);
  transform: scale(1.08);
}

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

/* ==========================================================================
   SERVICES / SOLUTIONS SECTION
   ========================================================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: var(--bg-dark);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 30px;
}

.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: background var(--transition-fast);
}

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

.solution-card:hover::before {
  background: var(--gold-gradient);
}

.solution-icon-box {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  background: rgba(197, 160, 89, 0.1);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  margin-bottom: 24px;
  font-size: 1.8rem;
  transition: transform var(--transition-fast);
}

.solution-card:hover .solution-icon-box {
  transform: scale(1.1) rotate(2deg);
  background: rgba(197, 160, 89, 0.18);
}

.solution-card h3 {
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.solution-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 22px;
  flex-grow: 1;
}

.solution-features {
  list-style: none;
  margin-bottom: 26px;
}

.solution-features li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.solution-features li::before {
  content: '✓';
  color: var(--gold-primary);
  font-weight: 700;
}

.solution-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-light);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: auto;
}

.solution-card-link:hover {
  color: #FFF;
  gap: 12px;
}

/* ==========================================================================
   INTERACTIVE SOUND VISUALIZER & SIMULATOR
   ========================================================================== */
.simulator-box {
  background: radial-gradient(circle at 50% 50%, rgba(197, 160, 89, 0.08) 0%, transparent 70%),
              var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

.simulator-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.canvas-visualizer-container {
  width: 100%;
  height: 180px;
  background: #06070A;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  margin-bottom: 28px;
}

#soundWaveCanvas {
  width: 100%;
  height: 100%;
  display: block;
}

.sim-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.sim-control-card {
  background: var(--bg-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sim-control-card:hover, .sim-control-card.active {
  border-color: var(--border-gold);
  background: rgba(197, 160, 89, 0.08);
}

.sim-control-card.active {
  box-shadow: 0 0 20px var(--gold-glow);
}

.sim-control-card h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.sim-control-card span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   PORTFOLIO SHOWCASE
   ========================================================================== */
.portfolio-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--gold-gradient);
  color: #0A0C10;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--gold-glow);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  box-shadow: var(--shadow-card);
}

.project-thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #0B0E14;
}

.project-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card:hover .project-thumb-wrap img {
  transform: scale(1.08);
}

.project-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 9, 13, 0.95) 0%, rgba(8, 9, 13, 0.3) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}

.project-category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold-light);
  margin-bottom: 6px;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFF;
  margin-bottom: 8px;
}

.project-specs {
  font-size: 0.82rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ==========================================================================
   FOUNDER / STORY HIGHLIGHT
   ========================================================================== */
.founder-section {
  position: relative;
  overflow: hidden;
}

.founder-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: 60px;
}

.founder-img-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-gold);
  box-shadow: var(--shadow-card);
}

.founder-img-card img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.founder-experience-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background: rgba(13, 16, 23, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  text-align: center;
}

.founder-experience-badge .years {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gold-light);
  font-family: var(--font-heading);
  line-height: 1;
}

.founder-experience-badge .text {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-weight: 600;
}

.timeline-list {
  position: relative;
  padding-left: 28px;
  margin-top: 32px;
}

.timeline-list::before {
  content: '';
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 6px;
  width: 2px;
  background: var(--border-gold);
}

.timeline-entry {
  position: relative;
  margin-bottom: 28px;
}

.timeline-entry::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--gold-primary);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-light);
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   INTERACTIVE SYSTEM ESTIMATOR / CALCULATOR
   ========================================================================== */
.estimator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-card);
}

.estimator-step {
  margin-bottom: 34px;
}

.step-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.step-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gold-primary);
  color: #000;
  font-size: 0.85rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.option-cards-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.option-card-radio {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 16px;
  background: var(--bg-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.option-card-radio:hover, .option-card-radio.selected {
  border-color: var(--gold-primary);
  background: rgba(197, 160, 89, 0.1);
  box-shadow: 0 0 16px var(--gold-glow);
}

.option-card-radio .opt-title {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.option-card-radio .opt-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.estimator-summary-box {
  background: var(--bg-dark);
  border: 1px dashed var(--border-gold);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.summary-details h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.summary-details p {
  color: var(--text-secondary);
  font-size: 0.88rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #050608;
  border-top: 1px solid var(--border-subtle);
  padding: 80px 0 30px;
  margin-top: auto;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold-gradient);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-col h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 22px;
  color: var(--text-primary);
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gold-primary);
}

.footer-about p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin: 18px 0 24px;
  line-height: 1.6;
}

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

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

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

.contact-info-list {
  list-style: none;
}

.contact-info-list li {
  display: flex;
  gap: 14px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.5;
}

.contact-info-list svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--gold-primary);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom a:hover {
  color: var(--text-secondary);
}

/* ==========================================================================
   FLOATING ACTION BUTTON (WhatsApp Quick Connect)
   ========================================================================== */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
  transition: all var(--transition-smooth);
}

.whatsapp-float:hover {
  transform: scale(1.1) rotate(6deg);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 34px;
  height: 34px;
  fill: #FFFFFF;
  display: block;
}

/* ==========================================================================
   MODAL LIGHTBOX
   ========================================================================== */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(5, 6, 8, 0.95);
  backdrop-filter: blur(16px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 30px;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 960px;
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.9);
}

.lightbox-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid var(--border-subtle);
  color: #FFF;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: var(--red-accent);
  transform: scale(1.1);
}

.lightbox-img-wrap img {
  width: 100%;
  max-height: 60vh;
  object-fit: cover;
}

.lightbox-caption {
  padding: 24px 30px;
}

.lightbox-caption h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.lightbox-caption p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .founder-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 72px;
  }
  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 9, 13, 0.98);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-smooth);
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link {
    font-size: 1.25rem;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .btn-phone-quick {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}