/* ==========================================================================
   ArtAliv — Design Tokens
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,500&family=Raleway:wght@300;400;500;600;700&display=swap');

:root {
  /* Cores da marca */
  --color-primary: #1b4b48;
  --color-primary-light: #2f6e69;
  --color-primary-dark: #0f302e;
  --color-accent: #c6a15b;
  --color-accent-light: #dcc084;
  --color-accent-dark: #a3813e;

  --color-bg: #faf7f1;
  --color-bg-alt: #f2ece1;
  --color-surface: #ffffff;
  --color-foreground: #1c2b29;
  --color-muted-fg: #5b6d69;
  --color-border: #e3dcc9;

  --color-on-primary: #ffffff;
  --color-on-accent: #24170a;

  /* Tipografia */
  --font-heading: 'Lora', 'Georgia', serif;
  --font-body: 'Raleway', 'Segoe UI', sans-serif;

  --fs-xs: 0.8rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.375rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.25rem;
  --fs-3xl: 3rem;

  /* Espaçamento (escala 4/8) */
  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-5: 3rem;
  --sp-6: 4rem;
  --sp-7: 6rem;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 10px rgba(15, 48, 46, 0.06);
  --shadow-md: 0 12px 32px rgba(15, 48, 46, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 48, 46, 0.14);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 180ms;
  --dur-med: 300ms;

  --container-w: 1160px;
}

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-foreground);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary-dark);
  line-height: 1.2;
  margin: 0 0 var(--sp-2);
  font-weight: 600;
}

p { margin: 0 0 var(--sp-2); color: var(--color-muted-fg); }

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

button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}

section { padding-block: var(--sp-7); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-bottom: var(--sp-2);
}
.eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--sp-5);
}
.section-head.center { margin-inline: auto; text-align: center; }

/* Focus visibility (a11y) */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ==========================================================================
   Botões
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--fs-sm);
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  min-height: 44px;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-light); box-shadow: var(--shadow-md); }

.btn-accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
}
.btn-accent:hover { background: var(--color-accent-light); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: var(--color-on-primary); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 241, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: var(--sp-3);
}

.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand-mark { width: 40px; height: 40px; flex-shrink: 0; }
.brand-name {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: 0.01em;
  line-height: 1;
}
.brand-tag {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  font-weight: 600;
  margin-top: 2px;
}

.main-nav { display: flex; align-items: center; gap: var(--sp-4); }
.main-nav ul {
  list-style: none;
  display: flex;
  gap: var(--sp-3);
  margin: 0;
  padding: 0;
}
.main-nav a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-foreground);
  padding: 0.5rem 0.25rem;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-med) var(--ease-out);
}
.main-nav a:hover::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 26px; height: 26px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding-block: var(--sp-6) var(--sp-7);
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -10% -10% auto auto;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(198, 161, 91, 0.16), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--sp-6);
}
.hero-copy h1 {
  font-size: clamp(2.1rem, 4vw, var(--fs-3xl));
  margin-bottom: var(--sp-3);
}
.hero-copy h1 em {
  font-style: italic;
  color: var(--color-primary-light);
}
.hero-copy p.lead {
  font-size: var(--fs-md);
  max-width: 46ch;
  margin-bottom: var(--sp-4);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}
.hero-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-primary-dark);
}
.hero-badge svg { width: 20px; height: 20px; color: var(--color-accent-dark); flex-shrink: 0; }

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}
.hero-visual .bottle-wrap {
  position: relative;
  width: min(460px, 92%);
}
.hero-visual .bottle-wrap img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.hero-visual .glow {
  position: absolute;
  inset: -8%;
  background: radial-gradient(circle, rgba(198,161,91,0.32), transparent 65%);
  border-radius: 50%;
  z-index: 0;
}
.float-anim { animation: float 6s ease-in-out infinite; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* ==========================================================================
   Sobre
   ========================================================================== */
.about .container {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--sp-6);
  align-items: center;
}
.about-visual {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  position: relative;
  overflow: hidden;
}
.about-visual svg { width: 100%; height: auto; }
.about-list {
  list-style: none;
  margin: var(--sp-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-2);
}
.about-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: var(--fs-sm);
  color: var(--color-foreground);
}
.about-list svg {
  width: 22px; height: 22px;
  color: var(--color-accent-dark);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   Cards de benefícios
   ========================================================================== */
.benefits { background: var(--color-bg-alt); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
}
.benefit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--sp-4);
  transition: transform var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}
.benefit-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.benefit-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-primary);
  margin-bottom: var(--sp-2);
}
.benefit-card:nth-child(even) .benefit-icon { color: var(--color-accent-dark); }
.benefit-icon svg { width: 26px; height: 26px; }
.benefit-card h3 { font-size: var(--fs-md); margin-bottom: 0.4rem; }
.benefit-card p { font-size: var(--fs-sm); margin-bottom: 0; }

/* ==========================================================================
   Como usar
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  counter-reset: step;
}
.step-card {
  position: relative;
  padding: var(--sp-4);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--sp-2);
}
.step-card h3 { font-size: var(--fs-md); }
.step-card p { font-size: var(--fs-sm); margin-bottom: 0; }

/* ==========================================================================
   Ingredientes / faixa decorativa
   ========================================================================== */
.ingredients {
  background: var(--color-primary-dark);
  color: var(--color-bg);
  position: relative;
}
.ingredients h2, .ingredients .eyebrow { color: var(--color-bg); }
.ingredients .eyebrow::before { background: var(--color-accent-light); }
.ingredients p { color: rgba(250,247,241,0.75); }
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(250,247,241,0.25);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.tag svg { width: 18px; height: 18px; color: var(--color-accent-light); }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list { max-width: 780px; margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  padding: var(--sp-3) 0;
  font-family: var(--font-heading);
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--color-primary-dark);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .chev { width: 20px; height: 20px; color: var(--color-accent-dark); transition: transform var(--dur-med) var(--ease-out); flex-shrink: 0; }
.faq-item[open] .chev { transform: rotate(180deg); }
.faq-item .faq-a { padding-bottom: var(--sp-3); font-size: var(--fs-sm); max-width: 65ch; }

/* ==========================================================================
   CTA newsletter
   ========================================================================== */
.cta-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.cta-block .section-head { margin-bottom: var(--sp-3); }
.notify-form {
  display: flex;
  gap: 0.6rem;
  max-width: 460px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}
.notify-form input[type="email"] {
  flex: 1 1 240px;
  min-height: 48px;
  padding: 0 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  color: var(--color-foreground);
}
.notify-form input[type="email"]::placeholder { color: var(--color-muted-fg); }
.form-note {
  font-size: var(--fs-xs);
  margin-top: var(--sp-2);
  color: var(--color-muted-fg);
}
.form-success {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: var(--sp-2);
}
.form-success svg { width: 20px; height: 20px; }
.form-success.show { display: flex; }
[role="alert"].form-error {
  display: none;
  color: #a3423a;
  font-size: var(--fs-xs);
  margin-top: var(--sp-1);
}
[role="alert"].form-error.show { display: block; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(250,247,241,0.7);
  padding-block: var(--sp-5) var(--sp-4);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--sp-4);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid rgba(250,247,241,0.14);
}
.footer-brand { display: flex; align-items: center; gap: 0.65rem; }
.footer-brand .brand-mark { width: 36px; height: 36px; }
.footer-brand-name { font-family: var(--font-heading); font-size: var(--fs-md); color: var(--color-bg); font-weight: 700; }
.footer-brand-tag { font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-accent-light); font-weight: 600; }
.footer-note { max-width: 420px; font-size: var(--fs-sm); }
.footer-legal {
  font-size: var(--fs-xs);
  line-height: 1.7;
  margin-top: var(--sp-3);
  max-width: 900px;
  color: rgba(250,247,241,0.55);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-2);
  padding-top: var(--sp-3);
  font-size: var(--fs-xs);
}

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Responsivo
   ========================================================================== */
@media (max-width: 1024px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .about .container { grid-template-columns: 1fr; }
  .about-visual { order: -1; max-width: 420px; margin-inline: auto; }
}

@media (max-width: 860px) {
  .main-nav ul { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero-copy p.lead { margin-inline: auto; }
  .hero-actions, .hero-badges { justify-content: center; }
  .hero-visual { order: -1; }
  .steps-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  section { padding-block: var(--sp-5); }
  .card-grid { grid-template-columns: 1fr; }
  .cta-block { padding: var(--sp-4); }
  .footer-top, .footer-bottom { flex-direction: column; }
}