/* ==========================================================================
   LUIZA BERTOLLI — PERSONAL & CORPORATE TRAINER
   Design System, Motion & Visual Architecture
   ========================================================================== */

/* --- 1. Custom Properties / Design Tokens --- */
:root {
  /* Color Palette: Obsidian Dark Luxury + Kinetic Amber + Biometric Cyan */
  --bg-deep: #080A0D;
  --bg-surface: #0E1217;
  --bg-card: rgba(18, 23, 31, 0.72);
  --bg-card-hover: rgba(26, 33, 44, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-elevated: rgba(255, 255, 255, 0.06);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-dim: #475569;

  --accent-amber: #F59E0B;
  --accent-amber-light: #FBBF24;
  --accent-amber-glow: rgba(245, 158, 11, 0.35);
  
  --accent-cyan: #06B6D4;
  --accent-cyan-light: #22D3EE;
  --accent-cyan-glow: rgba(6, 182, 212, 0.3);

  --accent-emerald: #10B981;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(245, 158, 11, 0.4);
  --border-glow: rgba(245, 158, 11, 0.2);

  /* Typography */
  --font-display: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing Scale */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3.5rem;
  --space-2xl: 5rem;
  --space-3xl: 7.5rem;

  /* Layout Containers */
  --container-max: 1320px;
  --container-pad: clamp(1.25rem, 4vw, 2.5rem);

  /* Elevation & Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 35px var(--accent-amber-glow);
  --shadow-cyan-glow: 0 0 35px var(--accent-cyan-glow);

  /* Transitions */
  --trans-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --trans-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --trans-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 9999px;
}

/* --- 2. Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.68;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.site-wrapper {
  position: relative;
  width: 100%;
  overflow-x: hidden;
}

/* Hardware acceleration para animações de entrada laterais */
.hero-copy,
.hero-visual-card,
.hypothesis-column,
.service-card,
.service-info,
.service-media-frame,
.method-step-card,
.about-visual,
.about-content,
.faq-item,
.contact-info-card,
.contact-form-card,
.footer-brand-info,
.footer-nav-col {
  will-change: transform, opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: transparent;
  border: none;
}

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

ul, ol {
  list-style: none;
}

/* Accessible focus visible */
:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: 3px;
}

/* --- 3. Parallax Wallpaper & Atmospheric Backgrounds --- */
.parallax-wallpaper-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.wallpaper-gradient {
  position: absolute;
  inset: -15%;
  width: 130%;
  height: 130%;
  background: 
    radial-gradient(circle at 18% 22%, rgba(245, 158, 11, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 82% 35%, rgba(6, 182, 212, 0.1) 0%, transparent 48%),
    radial-gradient(circle at 50% 85%, rgba(245, 158, 11, 0.07) 0%, transparent 55%),
    radial-gradient(circle at 75% 75%, rgba(30, 41, 59, 0.5) 0%, transparent 50%),
    linear-gradient(180deg, #080A0D 0%, #0A0D12 50%, #06080B 100%);
  will-change: transform;
}

.wallpaper-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 40%, black 20%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, black 20%, transparent 85%);
  opacity: 0.6;
}

.wallpaper-noise {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.06) 1px, transparent 0);
  background-size: 32px 32px;
  opacity: 0.35;
}

/* 3D Canvas Background for Kinetic Anatomy & Movement Rings */
#threejs-viewport {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.85;
  transition: opacity 0.8s ease;
}

/* --- 4. Main Site Wrapper --- */
.site-wrapper {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* --- 5. Interactive Preloader: "Carregando o Treinamento" --- */
.preloader {
  position: fixed;
  inset: 0;
  background-color: var(--bg-deep);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  overflow: hidden;
  transition: opacity 0.7s cubic-bezier(0.85, 0, 0.15, 1), visibility 0.7s;
}

.preloader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-card {
  position: relative;
  background: rgba(14, 18, 23, 0.94);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  max-width: 480px;
  width: 100%;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(245, 158, 11, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.preloader-avatar-wrap {
  position: relative;
  width: 110px;
  height: 110px;
  margin: 0 auto 1.5rem;
}

.preloader-avatar-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-amber);
  box-shadow: 0 0 25px var(--accent-amber-glow);
}

.preloader-scan-ring {
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px dashed rgba(34, 211, 238, 0.6);
  animation: spinSlow 12s linear infinite;
}

.preloader-pulse-ring {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1px solid rgba(245, 158, 11, 0.3);
  animation: pulseRing 3s ease-in-out infinite;
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulseRing {
  0%, 100% { transform: scale(0.96); opacity: 0.3; }
  50% { transform: scale(1.06); opacity: 0.8; }
}

.preloader-brand {
  margin-bottom: 1.25rem;
}

.preloader-brand-title {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.preloader-brand-title span {
  color: var(--accent-amber);
}

.preloader-brand-sub {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--accent-cyan-light);
  text-transform: uppercase;
}

.preloader-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-amber-light);
  margin-bottom: 1.5rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-amber);
  box-shadow: 0 0 10px var(--accent-amber);
  animation: pulseDot 1.5s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.75); }
}

.preloader-progress-box {
  margin-bottom: 1.25rem;
}

.preloader-progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.preloader-step-text {
  font-weight: 500;
  color: var(--text-primary);
}

.preloader-percentage {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-amber);
}

.preloader-progress-bar-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.preloader-progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-amber) 0%, var(--accent-cyan-light) 100%);
  border-radius: 99px;
  transition: width 0.3s ease;
  box-shadow: 0 0 12px var(--accent-amber-glow);
}

.preloader-checkpoints {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-align: left;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.checkpoint-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color var(--trans-fast);
}

.checkpoint-item.active {
  color: var(--accent-amber-light);
}

.checkpoint-item.done {
  color: var(--accent-emerald);
}

.checkpoint-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.preloader-skip-btn {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-decoration: underline;
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  transition: color var(--trans-fast);
}

.preloader-skip-btn:hover {
  color: var(--text-primary);
}

/* --- 6. Navigation Bar --- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  transition: background-color var(--trans-smooth), border-color var(--trans-smooth), backdrop-filter var(--trans-smooth);
}

.site-header.scrolled {
  background: rgba(8, 10, 13, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  cursor: pointer;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  line-height: 1.15;
}

.brand-name span {
  color: var(--accent-amber);
}

.brand-tagline {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent-cyan-light);
  text-transform: uppercase;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.4rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-amber), var(--accent-cyan));
  transition: width var(--trans-fast);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Reduced Motion Toggle Button */
.motion-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--trans-fast);
}

.motion-toggle:hover {
  color: var(--accent-amber);
  border-color: var(--border-accent);
}

.motion-toggle svg {
  width: 20px;
  height: 20px;
}

/* Mobile Toggle Hamburger */
.mobile-nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile Drawer Overlay */
.mobile-drawer {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 13, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 6rem 2rem 3rem;
  transform: translateX(100%);
  transition: transform var(--trans-smooth);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.mobile-nav-link {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--accent-amber);
}

/* --- 7. Buttons & Interactive Elements ---
   NOTE: Strictly NO diagonal arrow-up-right icons, as requested.
*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--trans-fast);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: #080A0D;
  box-shadow: 0 4px 20px var(--accent-amber-glow);
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #FBBF24 0%, #F59E0B 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.5);
  color: #000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-cyan {
  background: linear-gradient(135deg, #06B6D4 0%, #0284C7 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px var(--accent-cyan-glow);
  font-weight: 700;
}

.btn-cyan:hover {
  background: linear-gradient(135deg, #22D3EE 0%, #06B6D4 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.5);
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Pill Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.95rem;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-amber {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--accent-amber-light);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan-light);
}

.badge-hypothesis {
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid rgba(148, 163, 184, 0.28);
  color: #CBD5E1;
}

/* --- 8. Hero Section --- */
.hero-section {
  position: relative;
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
  padding-bottom: clamp(3.5rem, 8vw, 6.5rem);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-headline {
  font-size: clamp(2.3rem, 4.2vw, 3.8rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-headline .text-gradient-amber {
  background: linear-gradient(135deg, #FFFFFF 20%, #F59E0B 70%, #FBBF24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-headline .text-gradient-cyan {
  background: linear-gradient(135deg, #FFFFFF 20%, #22D3EE 70%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.1rem;
  margin-top: 0.5rem;
}

.hero-metrics-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-subtle);
}

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

.metric-value {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.metric-value .metric-icon {
  color: var(--accent-amber);
}

.metric-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.35;
  margin-top: 0.2rem;
}

/* Hero Visual Composition */
.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  perspective: 1000px;
}

.hero-image-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--bg-card);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.7), 0 0 30px rgba(245, 158, 11, 0.15);
}

.hero-image {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  filter: contrast(1.04) brightness(0.98);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-visual-card:hover .hero-image {
  transform: scale(1.025);
}

.hero-image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 10, 13, 0.85) 100%);
  pointer-events: none;
}

/* Floating Biometric Widgets */
.hero-floating-widget {
  position: absolute;
  background: rgba(14, 18, 23, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.15rem;
  box-shadow: var(--shadow-md);
  z-index: 5;
  pointer-events: auto;
}

.widget-top-right {
  top: 1.5rem;
  right: -1.25rem;
  border-left: 3px solid var(--accent-cyan);
}

.widget-bottom-left {
  bottom: 2rem;
  left: -1.25rem;
  border-left: 3px solid var(--accent-amber);
}

.widget-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.widget-main {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.2rem;
}

.widget-sub {
  font-size: 0.74rem;
  color: var(--accent-cyan-light);
  font-weight: 500;
}

/* 3D Interaction Badge */
.hero-3d-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  padding: 0.45rem 1rem;
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.hint-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

/* --- 9. Section System & Titles --- */
.section {
  position: relative;
  padding-block: clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
}

.section-subtitle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.9rem, 3.2vw, 2.85rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-top: 1rem;
}

/* --- 10. Audience & Needs Hypothesis Section --- */
.hypothesis-box {
  background: rgba(14, 18, 23, 0.75);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3rem);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.hypothesis-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-amber) 0%, var(--accent-cyan) 100%);
}

.hypothesis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  margin-top: 2rem;
}

.hypothesis-column {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color var(--trans-fast);
}

.hypothesis-column:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

.hypothesis-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hypothesis-icon-wrap {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-amber {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
}

.icon-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
}

.hypothesis-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hypothesis-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.94rem;
  color: var(--text-secondary);
}

.hypothesis-list li {
  position: relative;
  padding-left: 1.4rem;
}

.hypothesis-list li::before {
  content: '•';
  position: absolute;
  left: 0.3rem;
  color: var(--accent-amber);
  font-weight: bold;
}

.hypothesis-note {
  margin-top: 1.75rem;
  padding: 0.9rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--accent-cyan);
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- 11. Dual Pillars: Services Section (Asymmetric Architecture) --- */
.services-container {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6vw, 5.5rem);
}

.service-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3.25rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color var(--trans-smooth), box-shadow var(--trans-smooth);
}

.service-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.service-card.reverse {
  direction: rtl;
}

.service-card.reverse > * {
  direction: ltr;
}

.service-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.service-tag {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.service-tag.personal {
  color: var(--accent-amber);
}

.service-tag.corporate {
  color: var(--accent-cyan-light);
}

.service-heading {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.service-text {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.service-highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  margin-block: 0.5rem;
}

.highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.highlight-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.service-media-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-md);
  aspect-ratio: 16/10;
}

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

.service-card:hover .service-media-frame img {
  transform: scale(1.04);
}

.service-media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(8, 10, 13, 0.75) 100%);
  pointer-events: none;
}

.service-media-pill {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background: rgba(8, 10, 13, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- 12. Biomechanical 4-Phase Method Section --- */
.method-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.method-step-card {
  position: relative;
  background: rgba(14, 18, 23, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform var(--trans-smooth), border-color var(--trans-smooth), background var(--trans-smooth);
}

.method-step-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-amber);
  background: rgba(22, 28, 38, 0.85);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-amber);
  opacity: 0.9;
  line-height: 1;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.step-indicator {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent-cyan-light);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* --- 13. About Luiza Bertolli Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-image-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/5;
  background: var(--bg-card);
}

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

.about-badge-card {
  position: absolute;
  bottom: -1.25rem;
  right: -1.25rem;
  background: rgba(14, 18, 23, 0.95);
  border: 1px solid var(--accent-amber);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  max-width: 260px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.badge-card-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-amber);
  letter-spacing: 0.06em;
}

.badge-card-text {
  font-size: 0.86rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about-paragraph {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-credentials-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.credential-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.credential-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent-amber);
  margin-top: 0.2rem;
}

.credential-pending {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-style: italic;
  display: block;
}

/* --- 14. Interactive FAQ (Transparent GEO/SEO Support) --- */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--trans-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.35rem 1.65rem;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  background: transparent;
  gap: 1rem;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-amber);
  flex-shrink: 0;
  transition: transform var(--trans-fast);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--trans-smooth), padding var(--trans-smooth);
}

.faq-answer-inner {
  padding: 0 1.65rem 1.5rem;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.68;
}

/* --- 15. Contact & Consultation Request Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: flex-start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.contact-channel {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.channel-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.channel-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.channel-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 0.15rem;
}

.channel-sub {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-md);
}

.form-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.form-subtitle {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: rgba(8, 10, 13, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.15rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--trans-fast), box-shadow var(--trans-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
  outline: none;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

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

.form-feedback {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  font-size: 0.92rem;
  font-weight: 600;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34D399;
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #F87171;
}

/* --- 16. Footer --- */
.site-footer {
  background: #040507;
  border-top: 1px solid var(--border-subtle);
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: 2.5rem;
  position: relative;
  z-index: 5;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr 0.8fr;
  gap: clamp(2rem, 4vw, 4rem);
  margin-bottom: 3rem;
}

.footer-brand-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 360px;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-nav-title {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-link:hover {
  color: var(--accent-amber);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.82rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-disclaimer {
  font-size: 0.78rem;
  color: var(--text-dim);
  max-width: 600px;
  line-height: 1.45;
}

/* --- 17. Responsive Validation Breakpoints ---
   Targeting explicitly:
   - Desktop 1440px
   - Desktop 1200px
   - Desktop 1140px
   - Desktop 960px
   - Tablet 834px
   - Mobile 428px
*/

/* Below 1200px */
@media (max-width: 1200px) {
  :root {
    --container-max: 1100px;
  }
  .method-timeline {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Below 1140px / 960px */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }
  .hero-copy {
    text-align: center;
    align-items: center;
  }
  .hero-description {
    margin-inline: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-metrics-bar {
    max-width: 500px;
    width: 100%;
    margin-inline: auto;
  }
  .hero-visual-card {
    max-width: 440px;
    margin-inline: auto;
  }
  .widget-top-right {
    right: 0;
  }
  .widget-bottom-left {
    left: 0;
  }

  .service-card,
  .service-card.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
    direction: ltr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .about-visual {
    max-width: 440px;
    margin-inline: auto;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .nav-desktop {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
  }
}

/* Below Tablet 834px */
@media (max-width: 834px) {
  .hypothesis-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand-info {
    grid-column: 1 / -1;
  }
}

/* Below Mobile 428px */
@media (max-width: 428px) {
  :root {
    --container-pad: 1.15rem;
  }

  .hero-headline {
    font-size: 2.15rem;
  }
  .hero-metrics-bar {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    text-align: center;
  }
  .metric-item {
    align-items: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .method-timeline {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
  
  .hero-floating-widget {
    position: static;
    margin-top: 1rem;
    width: 100%;
  }

  .about-badge-card {
    position: static;
    margin-top: 1rem;
    max-width: 100%;
  }
}

/* --- 18. Accessibility & Reduced Motion Support --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .wallpaper-gradient {
    transform: none !important;
  }
  #threejs-viewport {
    display: none !important;
  }
  .preloader {
    display: none !important;
  }
}

/* Forced Reduced Motion class toggled via UI */
body.reduced-motion *,
body.reduced-motion *::before,
body.reduced-motion *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}

body.reduced-motion #threejs-viewport {
  opacity: 0.2;
}