/* ============================================================
   GLOBAL.CSS — Dr. Rauph Batista Guimarães
   Neurobrain Integrative Institute
   ============================================================ */

/* ---------- GOOGLE FONTS ---------- */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;600;700&family=Montserrat:wght@400;500;600;700&family=Source+Serif+4:wght@400;500&display=swap');

/* ---------- CSS VARIABLES ---------- */
:root {
  /* Verdes */
  --verde-escuro:    #1A3C34;
  --verde-medio:     #2D6A4F;
  --verde-claro:     #52B788;
  --verde-menta:     #B7E4C7;

  /* Azuis */
  --azul-noite:      #0D1B2A;
  --azul-profundo:   #1B4F72;
  --azul-cientifico: #2E86AB;
  --azul-neon:       #48CAE4;

  /* Neutros */
  --branco-puro:     #FFFFFF;
  --cinza-claro:     #F4F6F8;
  --cinza-texto:     #4A5568;
  --dourado-titulo:  #C9A84C;

  /* Tipografia */
  --font-display:  'Cormorant Garamond', Georgia, serif;
  --font-ui:       'Montserrat', sans-serif;
  --font-body:     'Source Serif 4', Georgia, serif;

  /* Espaçamentos */
  --section-pad: 90px 0;
  --container-max: 1280px;
  --radius: 8px;
  --radius-lg: 16px;

  /* Transições */
  --transition: 0.3s ease-in-out;

  /* Gradientes */
  --grad-hero:    linear-gradient(135deg, var(--azul-noite) 0%, var(--verde-escuro) 100%);
  --grad-accent:  linear-gradient(90deg, var(--verde-claro), var(--azul-neon));
  --grad-section: linear-gradient(135deg, var(--verde-escuro) 0%, var(--azul-profundo) 100%);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--cinza-texto);
  background: var(--branco-puro);
  line-height: 1.7;
  overflow-x: hidden;
}

/* ---------- SKIP NAV ---------- */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--verde-claro);
  color: var(--branco-puro);
  padding: 8px 16px;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  z-index: 9999;
  transition: top var(--transition);
}
.skip-nav:focus { top: 0; }

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--azul-profundo);
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: clamp(2.2rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 3rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

p {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--cinza-texto);
  line-height: 1.8;
  margin-bottom: 1rem;
}

a {
  color: var(--azul-cientifico);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--verde-claro); }

/* ---------- CONTAINER ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- SECTION DIVIDER ---------- */
.section-divider {
  height: 3px;
  background: var(--grad-accent);
  border: none;
  margin: 0;
}

/* ---------- SECTION LABELS ---------- */
.section-label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--verde-claro);
  display: block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  color: var(--azul-profundo);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-family: var(--font-body);
  color: var(--cinza-texto);
  font-size: 1.1rem;
  max-width: 650px;
  line-height: 1.7;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header .section-subtitle {
  margin: 0 auto;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  padding: 14px 28px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--verde-medio);
  color: var(--branco-puro);
  border-color: var(--verde-medio);
}
.btn-primary:hover {
  background: var(--verde-claro);
  border-color: var(--verde-claro);
  color: var(--branco-puro);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(82, 183, 136, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--branco-puro);
  border-color: var(--branco-puro);
}
.btn-outline:hover {
  background: var(--branco-puro);
  color: var(--azul-noite);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--verde-medio);
  border-color: var(--verde-medio);
}
.btn-outline-dark:hover {
  background: var(--verde-medio);
  color: var(--branco-puro);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--azul-cientifico);
  color: var(--branco-puro);
  border-color: var(--azul-cientifico);
}
.btn-secondary:hover {
  background: var(--azul-profundo);
  border-color: var(--azul-profundo);
  color: var(--branco-puro);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(46, 134, 171, 0.35);
}

/* ---------- CARDS ---------- */
.card {
  background: var(--branco-puro);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.07);
  transition: transform var(--transition), box-shadow var(--transition);
  border-left: 4px solid var(--verde-claro);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.13);
}

/* ---------- IMAGE PLACEHOLDERS ---------- */
.img-placeholder {
  background: linear-gradient(135deg, var(--verde-escuro) 0%, var(--azul-profundo) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--verde-menta);
  border-radius: var(--radius-lg);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  text-align: center;
  padding: 2rem;
  min-height: 260px;
}

.img-placeholder i {
  font-size: 3rem;
  color: var(--verde-claro);
  opacity: 0.8;
}

.img-placeholder span {
  color: var(--verde-menta);
  font-style: italic;
  font-size: 0.8rem;
  max-width: 200px;
  line-height: 1.5;
}

/* ---------- BADGE ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.badge-gold {
  background: rgba(201, 168, 76, 0.15);
  color: var(--dourado-titulo);
  border: 1px solid var(--dourado-titulo);
}

.badge-green {
  background: rgba(82, 183, 136, 0.15);
  color: var(--verde-claro);
  border: 1px solid var(--verde-claro);
}

.badge-blue {
  background: rgba(46, 134, 171, 0.15);
  color: var(--azul-cientifico);
  border: 1px solid var(--azul-cientifico);
}

/* ---------- SECTIONS ---------- */
section {
  padding: var(--section-pad);
}

.section-alt {
  background: var(--cinza-claro);
}

.section-dark {
  background: var(--grad-section);
  color: var(--branco-puro);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--branco-puro);
}

.section-dark p,
.section-dark .section-subtitle {
  color: var(--verde-menta);
}

.section-dark .section-label {
  color: var(--azul-neon);
}

/* ---------- UTILITY ---------- */
.text-center { text-align: center; }
.text-white { color: var(--branco-puro) !important; }
.text-green { color: var(--verde-claro) !important; }
.text-gold { color: var(--dourado-titulo) !important; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ---------- HERO INNER (páginas internas) ---------- */
.hero-inner {
  background: var(--grad-hero);
  padding: 130px 0 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 100%, rgba(82,183,136,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner h1 {
  color: var(--branco-puro);
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: 1rem;
}

.hero-inner .subtitle {
  color: var(--verde-menta);
  font-family: var(--font-ui);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- WHATSAPP FLOAT ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 58px;
  height: 58px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--branco-puro);
  font-size: 1.6rem;
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.45);
  z-index: 1000;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 32px rgba(37, 211, 102, 0.55);
  color: var(--branco-puro);
}

/* ---------- ANIMATIONS ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays */
.fade-in:nth-child(1) { transition-delay: 0.05s; }
.fade-in:nth-child(2) { transition-delay: 0.15s; }
.fade-in:nth-child(3) { transition-delay: 0.25s; }
.fade-in:nth-child(4) { transition-delay: 0.35s; }
.fade-in:nth-child(5) { transition-delay: 0.45s; }
.fade-in:nth-child(6) { transition-delay: 0.55s; }

/* ---------- RESPONSIVE GRID ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --section-pad: 60px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.7rem; }
  .container { padding: 0 16px; }
}
@media (max-width: 480px) {
  :root { --section-pad: 48px 0; }
  .btn { padding: 12px 20px; font-size: 0.85rem; }
}