/* ==========================================================================
   Design Tokens - David Personal Training
   ========================================================================== */
:root {
  /* 60% — Superfície/Fundo */
  --color-surface:     #0d0d0d;  
  --color-surface-alt: #1a1a1a;  
  
  /* 30% — Conteúdo (Texto) */
  --color-ink:         #ffffff;  
  --color-ink-soft:    rgba(255, 255, 255, 0.7); 
  
  /* 10% — Acento */
  --color-accent:      #ff4a1c; /* Vibrant Orange/Red */
  --color-accent-deep: #e6390f; /* Darker accent for hover */
  
  /* Utilitários */
  --color-line:        rgba(255, 255, 255, 0.1);

  /* Tipografia */
  --font-display: 'Outfit', sans-serif;
  --font-body:    'Inter', sans-serif;
  
  --text-xs:   0.8rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.25rem;
  --text-lg:   1.5rem;
  --text-xl:   2rem;
  --text-2xl:  3rem;
  --text-3xl:  4rem;
  
  /* Espaçamento */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;
  --space-3xl:  64px;
  --space-4xl:  96px;
  
  /* Sombras */
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-elevated: 
    0 0 0 1px var(--color-line),
    0 20px 40px -10px rgba(0,0,0, 0.8),
    0 0 40px rgba(255, 74, 28, 0.08); /* Sutil glow do acento */
    
  /* Animações */
  --duration-fast:   150ms;
  --duration-normal: 250ms;
  --duration-slow:   500ms;
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Layout */
  --max-width: 1200px;
  --gutter: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-surface);
  color: var(--color-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

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

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

/* ==========================================================================
   Utilitários & Componentes Globais
   ========================================================================== */
.wrap {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

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

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-spring);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-ink); /* white text on orange/red */
}

.btn-primary:hover {
  background-color: var(--color-accent-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 74, 28, 0.25);
}

.btn-large {
  padding: 16px 32px;
  font-size: var(--text-md);
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: 6px 12px;
  background-color: rgba(255, 74, 28, 0.1);
  color: var(--color-accent);
  border: 1px solid rgba(255, 74, 28, 0.2);
  border-radius: 100px;
  font-size: var(--text-sm);
  font-weight: 500;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: var(--space-md) 0;
  transition: all var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
  background-color: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(12px);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-line);
}

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

.brand-text {
  font-size: var(--text-lg);
  text-transform: uppercase;
}

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

.nav-links {
  display: flex;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-soft);
}

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

/* Mobile Nav fix */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding-top: calc(100px + var(--space-4xl));
  padding-bottom: var(--space-4xl);
  position: relative;
}

.hero-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-headline {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
}

.hero-subheadline {
  font-size: var(--text-lg);
  color: var(--color-ink-soft);
  margin-bottom: var(--space-2xl);
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.hero-microcopy {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

.hero-visual {
  position: relative;
}

.image-wrapper {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
}

.image-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(13,13,13,0.8), transparent);
  pointer-events: none;
}

.stat-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: var(--color-surface-alt);
  padding: var(--space-md) var(--space-lg);
  border-radius: 12px;
  border: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  box-shadow: var(--shadow-md);
  z-index: 10;
}

.stat-icon {
  font-size: var(--text-xl);
}

.stat-info strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-md);
}

.stat-info span {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* Diagonal divider - Signature Element */
.divider {
  position: absolute;
  bottom: -5vw;
  left: 0;
  width: 100%;
  height: 10vw;
  background-color: var(--color-surface-alt);
  transform: skewY(-3deg);
  z-index: -1;
}

/* ==========================================================================
   Social Proof (Resultados)
   ========================================================================== */
.section-proof {
  background-color: var(--color-surface-alt);
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
}

.section-desc {
  color: var(--color-ink-soft);
  font-size: var(--text-md);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.review-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  padding: var(--space-xl);
  border-radius: 16px;
  transition: transform var(--duration-normal) var(--ease-out);
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 74, 28, 0.3);
}

.review-stars {
  margin-bottom: var(--space-md);
  letter-spacing: 2px;
}

.review-text {
  font-size: var(--text-base);
  font-style: italic;
  margin-bottom: var(--space-xl);
  color: var(--color-ink-soft);
}

.review-author {
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-md);
}

.review-author strong {
  display: block;
  font-family: var(--font-display);
}

.review-author span {
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
}

/* ==========================================================================
   Methodology
   ========================================================================== */
.section-method {
  padding: var(--space-4xl) 0;
  position: relative;
}

.method-content {
  margin-bottom: var(--space-3xl);
}

.method-list {
  list-style: none;
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.method-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.method-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background-color: rgba(255, 74, 28, 0.1);
  color: var(--color-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.method-info h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-xs);
}

.method-info p {
  color: var(--color-ink-soft);
}

.divider-bottom {
  position: absolute;
  bottom: -5vw;
  left: 0;
  width: 100%;
  height: 10vw;
  background-color: var(--color-surface-alt);
  transform: skewY(3deg);
  z-index: -1;
}

/* Use grid for Desktop Method */
@media (min-width: 768px) {
  .section-method .wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
  }
}

/* ==========================================================================
   CTA Banner
   ========================================================================== */
.section-cta {
  background-color: var(--color-accent);
  color: var(--color-ink);
  padding: var(--space-4xl) 0;
  text-align: center;
}

.cta-wrap {
  max-width: 800px;
}

.cta-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-md);
  color: var(--color-ink);
}

.cta-desc {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2xl);
  opacity: 0.9;
}

.section-cta .btn-primary {
  background-color: var(--color-surface);
  color: var(--color-ink);
}

.section-cta .btn-primary:hover {
  background-color: #000;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

/* ==========================================================================
   Location & Footer
   ========================================================================== */
.section-location {
  padding: var(--space-4xl) 0;
  background-color: var(--color-surface-alt);
}

.location-wrap {
  display: flex;
  justify-content: center;
}

.location-info {
  background-color: var(--color-surface);
  padding: var(--space-2xl);
  border-radius: 16px;
  border: 1px solid var(--color-line);
  max-width: 500px;
  width: 100%;
}

.location-info h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
}

.location-info > p {
  color: var(--color-ink-soft);
  margin-bottom: var(--space-xl);
}

.info-block {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.info-block svg {
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 4px;
}

.info-block strong {
  display: block;
  font-family: var(--font-display);
  margin-bottom: var(--space-xs);
}

.info-block p {
  color: var(--color-ink-soft);
}

.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-line);
  text-align: center;
}

.footer-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.copyright {
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}

/* ==========================================================================
   Responsividade
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-headline {
    font-size: var(--text-2xl);
  }
}

@media (max-width: 768px) {
  .hero-wrap {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-subheadline {
    margin: 0 auto var(--space-2xl);
  }
  
  .stat-card {
    left: 10px;
    bottom: 10px;
    right: 10px;
    justify-content: center;
  }
  
  .proof-grid {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: var(--text-xl);
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 2.5rem;
  }
  
  .nav-cta {
    padding: 8px 16px;
    font-size: var(--text-sm);
  }
}