/* ===================================================
   Samuel Cell - Site Estático
   Cores: dourado com sombras pretas
   Fontes: Space Grotesk (títulos) + Inter (corpo)
   =================================================== */

/* ---------- CSS Variables (Design Tokens) ---------- */
:root {
  --bg:               hsl(40, 10%, 6%);
  --fg:               hsl(40, 20%, 92%);
  --card-bg:          hsl(40, 8%, 9%);
  --primary:          hsl(43, 80%, 50%);
  --primary-fg:       hsl(0, 0%, 5%);
  --secondary:        hsl(40, 8%, 13%);
  --secondary-fg:     hsl(40, 15%, 85%);
  --muted:            hsl(40, 8%, 12%);
  --muted-fg:         hsl(40, 10%, 50%);
  --accent:           hsl(35, 90%, 55%);
  --border:           hsl(40, 10%, 16%);
  --radius:           0.75rem;
  --gradient-primary: linear-gradient(135deg, hsl(43,80%,50%), hsl(35,90%,55%));
  --gradient-hero:    linear-gradient(180deg, hsl(40,10%,6%) 0%, hsl(40,12%,10%) 100%);
  --shadow-glow:      0 0 30px -5px hsla(43,80%,50%,0.3);
  --shadow-card:      0 4px 24px -4px hsla(0,0%,0%,0.6);
  --font-heading:     'Space Grotesk', system-ui, sans-serif;
  --font-body:        'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

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

h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); }

a { color: inherit; text-decoration: none; }

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

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---------- Utilities ---------- */
.text-gradient {
  background-image: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Animations ---------- */
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-in-up {
  opacity: 0;
  animation: fade-in-up 0.6s ease-out forwards;
}

/* ==================== HEADER ==================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);
  background: hsla(40,10%,6%,0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  background-image: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Nav desktop */
.nav-desktop { display: flex; gap: 2rem; }
.nav-desktop a {
  font-size: 0.875rem;
  color: var(--muted-fg);
  transition: color 0.2s;
}
.nav-desktop a:hover { color: var(--fg); }

/* Header CTA */
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  display: none;
  border-top: 1px solid var(--border);
  background: hsla(40,10%,6%,0.95);
  backdrop-filter: blur(16px);
  padding-bottom: 1rem;
}
.nav-mobile.open { display: block; }
.nav-mobile nav {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1rem;
}
.nav-mobile nav a {
  font-size: 0.875rem;
  color: var(--muted-fg);
  padding: 0.25rem 0;
  transition: color 0.2s;
}
.nav-mobile nav a:hover { color: var(--fg); }
.mobile-cta { margin-top: 0.5rem; text-align: center; }

/* ==================== BUTTONS ==================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--gradient-primary);
  color: var(--primary-fg);
  font-weight: 600;
  border-radius: var(--radius);
  padding: 0.625rem 1.25rem;
  box-shadow: var(--shadow-glow);
  transition: opacity 0.2s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { opacity: 0.9; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--secondary);
  color: var(--secondary-fg);
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.625rem 1.25rem;
  transition: background 0.2s;
  cursor: pointer;
}
.btn-secondary:hover { background: var(--muted); }

.btn-lg { padding: 0.875rem 2rem; font-size: 1rem; }

/* ==================== HERO ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
  background: var(--gradient-hero);
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.2;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: hsla(40,10%,6%,0.6);
}
.hero-content {
  position: relative;
  z-index: 10;
  padding: 5rem 2rem;
  max-width: 48rem;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--border);
  background: var(--secondary);
  border-radius: 9999px;
  padding: 0.375rem 1rem;
  font-size: 0.75rem;
  color: var(--muted-fg);
  margin-bottom: 1.5rem;
}
.hero-title {
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero-desc {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--muted-fg);
  max-width: 36rem;
  margin-bottom: 2.5rem;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==================== SECTIONS ==================== */
.section { padding: 5rem 0; }
.bg-secondary-light { background: hsla(40,8%,13%,0.3); }

.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}
.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
}
.section-sub {
  color: var(--muted-fg);
  margin-top: 0.75rem;
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

/* ==================== GRID ==================== */
.grid { display: grid; gap: 1.5rem; }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* ==================== CARDS ==================== */
.card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card-bg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  border-color: hsla(43,80%,50%,0.4);
  box-shadow: var(--shadow-glow);
}

/* Service cards */
.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: var(--radius);
  background: var(--gradient-primary);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}
.service-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.service-card p {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.6;
}

/* Accessory cards */
.accessory-card { text-align: center; }
.accessory-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--secondary);
  font-size: 1.5rem;
  margin: 0 auto 1rem;
}
.accessory-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.accessory-card p {
  font-size: 0.875rem;
  color: var(--muted-fg);
  margin-bottom: 1rem;
}
.price {
  font-size: 0.875rem;
  font-weight: 600;
  background-image: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Testimonial cards */
.stars { margin-bottom: 1rem; font-size: 0.875rem; }
.testimonial-text {
  font-size: 0.875rem;
  color: var(--muted-fg);
  line-height: 1.6;
  margin-bottom: 1rem;
}
.testimonial-name {
  font-size: 0.875rem;
  font-weight: 600;
}

/* ==================== CONTACT ==================== */
.contact-grid {
  max-width: 36rem;
  margin: 0 auto;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item { display: flex; gap: 1rem; align-items: flex-start; }
.contact-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: var(--secondary);
  font-size: 1.125rem;
}
.contact-label { font-size: 0.875rem; font-weight: 600; margin-bottom: 0.125rem; }
.contact-value { font-size: 0.875rem; color: var(--muted-fg); }

/* Contact buttons */
.contact-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #25D366;
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  transition: opacity 0.2s;
}
.btn-whatsapp:hover { opacity: 0.9; }

.btn-instagram {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  transition: opacity 0.2s;
}
.btn-instagram:hover { opacity: 0.9; }

.btn-maps {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--secondary);
  color: var(--secondary-fg);
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  transition: background 0.2s;
}
.btn-maps:hover { background: var(--muted); }

/* ==================== ABOUT ==================== */
.about-text {
  text-align: center;
  max-width: 48rem;
  margin: 0 auto;
  color: var(--muted-fg);
  line-height: 1.7;
  font-size: clamp(0.9rem, 2vw, 1.125rem);
}

/* ==================== FOOTER ==================== */
.footer {
  border-top: 1px solid var(--border);
  background: hsla(40,8%,13%,0.3);
  padding: 2.5rem 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer-copy { font-size: 0.75rem; color: var(--muted-fg); }

/* ==================== FAB WHATSAPP ==================== */
.fab-whatsapp {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px hsla(0,0%,0%,0.4);
  z-index: 100;
  transition: transform 0.2s;
}
.fab-whatsapp:hover { transform: scale(1.1); }

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .nav-desktop, .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .hero-content { padding: 3rem 1rem; }
  .hero-buttons { flex-direction: column; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .contact-buttons { flex-direction: column; }
  .footer-inner { flex-direction: column; text-align: center; }
}