/* ================================================
   BRAINTHINKING — Institutional Website
   Color palette extracted directly from the PDF
   ================================================ */

:root {
  /* Core palette */
  --bg-page:       #D0D6DD;   /* light blue-grey — main background */
  --bg-white:      #FFFFFF;
  --bg-dark:       #2E2E2E;   /* dark slides background */
  --bg-dark-2:     #383438;   /* slightly purple-dark */
  --bg-mid:        #E8ECEF;   /* lighter grey sections */

  /* Text */
  --text-dark:     #414141;
  --text-mid:      #555555;
  --text-light:    #FFFFFF;
  --text-muted:    rgba(255,255,255,0.75);

  /* Brand accent — from logo */
  --accent-blue:   #3B8FBF;
  --accent-teal:   #4EC3C8;
  --accent-red:    #D95C5C;
  --accent-line:   rgba(65,65,65,0.25);

  /* Cards */
  --card-border:   rgba(65,65,65,0.2);
  --card-dark-bg:  rgba(255,255,255,0.06);
  --card-light-bg: rgba(255,255,255,0.85);

  /* Spacing */
  --section-gap:   100px;
  --container:     1200px;
  --radius:        16px;
  --radius-sm:     10px;

  /* Transitions */
  --ease:          cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

body {
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-page);
  color: var(--text-dark);
  line-height: 1.65;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
strong { font-weight: 700; }

/* ===== CONTAINERS ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 2;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: 50px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  text-transform: uppercase;
}
.btn-primary {
  background: var(--text-dark);
  color: var(--bg-white);
  border: 2px solid var(--text-dark);
}
.btn-primary:hover {
  background: transparent;
  color: var(--text-dark);
}
.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border: 2px solid var(--text-dark);
}
.btn-outline:hover {
  background: var(--text-dark);
  color: var(--bg-white);
}

/* ===== BLOB BACKGROUNDS ===== */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.blob-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,143,191,0.30) 0%, rgba(78,195,200,0.12) 60%, transparent 80%);
  top: -100px; left: -150px;
}
.blob-2 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(78,195,200,0.22) 0%, rgba(59,143,191,0.10) 60%, transparent 80%);
  bottom: -150px; right: -200px;
}
.blob-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(217,92,92,0.15) 0%, rgba(59,143,191,0.15) 60%, transparent 80%);
  top: 50%; right: 5%;
  transform: translateY(-50%);
}
.blob-dark-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(78,195,200,0.18) 0%, transparent 70%);
  top: -80px; right: -100px;
}
.blob-dark-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(59,143,191,0.20) 0%, transparent 70%);
  bottom: -60px; left: -80px;
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(208, 214, 221, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(65,65,65,0.10);
  transition: box-shadow 0.4s var(--ease);
}
.navbar.scrolled {
  box-shadow: 0 2px 24px rgba(0,0,0,0.12);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo-img { width: 38px; height: 38px; object-fit: contain; }
.nav-logo-text {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  overflow: hidden;
}
.nav-link {
  padding: 7px 11px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}
.nav-link:hover { background: rgba(65,65,65,0.10); }
.nav-link.active { background: rgba(65,65,65,0.08); color: var(--accent-blue); }
.nav-cta {
  background: var(--text-dark) !important;
  color: var(--bg-white) !important;
  border-radius: 50px;
  padding: 8px 20px;
  margin-left: 6px;
}
.nav-cta:hover { background: var(--accent-blue) !important; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== SECTION BASE ===== */
.section {
  position: relative;
  padding: var(--section-gap) 0;
  overflow: hidden;
}
.section-light  { background: var(--bg-page); }
.section-mid    { background: var(--bg-mid); }
.section-dark   { background: var(--bg-dark); color: var(--text-light); }
.section-dark-2 { background: var(--bg-dark-2); color: var(--text-light); }

.section-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 48px;
}
.section-logo { width: 34px; height: 34px; object-fit: contain; }
.section-brand {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: inherit;
  opacity: 0.8;
}

/* ===== TITLES ===== */
.section-title-xl {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-light);
  margin-bottom: 40px;
}
.section-title-dark {
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text-dark);
  margin-bottom: 48px;
}

/* ===== TWO-COL TEXT ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.two-col p { margin-bottom: 16px; font-size: 0.93rem; opacity: 0.9; }

/* ===== CARDS ===== */
.cards-row {
  display: grid;
  gap: 24px;
}
.three-col  { grid-template-columns: repeat(3, 1fr); }
.two-col-center { grid-template-columns: repeat(2, 1fr); max-width: 820px; margin: 24px auto 0; }
.two-col    { grid-template-columns: repeat(2, 1fr); }

.card {
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.10); }

.card-outline {
  background: var(--bg-white);
  border: 1px solid var(--card-border);
}
.card-outline .card-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent-blue);
  margin-bottom: 16px;
}
.card-outline h3 {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-dark);
  margin-bottom: 14px;
}
.card-outline p { font-size: 0.87rem; color: var(--text-mid); line-height: 1.7; }

.card-valor {
  background: var(--card-light-bg);
  border: 1px solid var(--card-border);
  text-align: center;
}
.valor-icon { font-size: 2rem; margin-bottom: 14px; }
.card-valor h3 {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.card-valor p { font-size: 0.87rem; color: var(--text-mid); }

.card-area {
  background: var(--card-light-bg);
  border: 1px solid var(--card-border);
}
.area-icon { font-size: 1.8rem; margin-bottom: 14px; }
.card-area h3 {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.4;
}
.card-area p { font-size: 0.87rem; color: var(--text-mid); }
.card-full   { grid-column: 1 / -1; max-width: 560px; }

.card-dif {
  background: var(--card-light-bg);
  border: 1px solid var(--card-border);
}
.card-dif h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
  border-bottom: 2px solid var(--accent-blue);
  padding-bottom: 10px;
}
.card-dif p { font-size: 0.87rem; color: var(--text-mid); line-height: 1.7; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--bg-page);
  position: relative;
  padding: 128px 40px 60px;  /* 64px navbar + 64px breathing room */
  overflow: hidden;
}
.hero-blobs { position: absolute; inset: 0; pointer-events: none; }
.hero-blobs .blob-1 { top: -80px; left: 30%; width: 600px; height: 600px; }
.hero-blobs .blob-2 { top: 20%; right: -100px; width: 500px; height: 500px; }
.hero-blobs .blob-3 { bottom: -100px; left: -50px; }
.hero-divider {
  position: absolute;
  top: 60px; left: 40px; right: 40px;
  height: 1px;
  background: var(--accent-line);
}
.hero-logo-top {
  position: absolute;
  top: 24px; right: 40px;
  width: 48px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}
.hero-title {
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text-dark);
  margin-bottom: 28px;
}
.hero-dot { color: var(--text-dark); }
.hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.3rem);
  font-weight: 400;
  color: var(--text-mid);
  margin-bottom: 40px;
  max-width: 540px;
  line-height: 1.6;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll-hint {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.hero-scroll-hint span {
  display: block;
  width: 24px; height: 38px;
  border: 2px solid var(--text-dark);
  border-radius: 12px;
  position: relative;
}
.hero-scroll-hint span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  border-radius: 2px;
  background: var(--text-dark);
  animation: scrollDot 2s infinite;
}
@keyframes scrollDot {
  0%   { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 20px; }
}

/* ===== SUMMARY (INDEX) ===== */
.summary {
  background: var(--bg-mid);
  padding: 60px 0;
  position: relative;
  overflow: hidden;
}
.summary .container {
  display: flex;
  align-items: flex-start;
  gap: 80px;
}
.summary-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.summary-logo img { width: 56px; height: 56px; object-fit: contain; }
.summary-logo span {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-dark);
}
.summary-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px 40px;
  flex: 1;
}
.summary-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}
.summary-list li:hover { background: rgba(65,65,65,0.08); }
.sum-num {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-mid);
  min-width: 24px;
}
.summary-list a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: color 0.2s;
}
.summary-list a:hover { color: var(--accent-blue); }

/* ===== QUEM SOMOS ===== */
.quem-somos { padding: 0; }
.quem-somos .container { padding-top: 100px; padding-bottom: 100px; }
.section-bg-photo {
  display: none;
}
.section-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(46,46,46,0.85) 0%, rgba(56,52,56,0.90) 100%);
}
.quem-somos .two-col p { color: var(--text-muted); }

/* ===== PROPOSTA DE VALOR ===== */
.proposta-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}
.proposta-tagline {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 2;
  color: var(--text-muted);
  margin-top: 24px;
}
.proposta-right { display: flex; flex-direction: column; gap: 24px; }
.proposta-item {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: background 0.3s;
}
.proposta-item:hover { background: rgba(255,255,255,0.10); }
.proposta-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.proposta-item p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }

/* ===== PILARES ===== */
.pilares { padding: var(--section-gap) 0; }

.pilares-headline {
  font-size: clamp(1.5rem, 3.5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-dark);
  margin-bottom: 56px;
  max-width: 700px;
}

/* ===== MISSÃO & VISÃO ===== */
.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.mv-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 44px;
}
.mv-card h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--text-light);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid rgba(255,255,255,0.15);
}
.mv-card p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 14px; line-height: 1.75; }

/* ===== ACÇÕES DESENVOLVIDAS ===== */
.acoes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  overflow: hidden;
}
.acao-col {
  padding: 28px 24px;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.acao-col:last-child { border-right: none; }
.acao-header {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-teal);
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.acao-col ul li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 5px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  line-height: 1.5;
  position: relative;
  padding-left: 12px;
}
.acao-col ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent-blue);
  opacity: 0.7;
}

/* ===== COMO INTERVIMOS ===== */
.como-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.como-left h2 { margin-bottom: 24px; }
.como-left p { font-size: 0.9rem; color: var(--text-mid); margin-bottom: 14px; line-height: 1.75; }
.como-right { display: flex; flex-direction: column; gap: 12px; }
.servico {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: var(--card-light-bg);
  border: 1px solid var(--card-border);
  transition: all 0.3s var(--ease);
}
.servico:hover {
  background: var(--bg-white);
  border-color: var(--accent-blue);
  transform: translateX(4px);
}
.servico-icon { font-size: 1.3rem; flex-shrink: 0; }
.servico span { font-size: 0.9rem; font-weight: 600; color: var(--text-dark); }

/* ===== TESTEMUNHOS ===== */
.test-inner {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: start;
}
.test-left p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 14px; line-height: 1.75; }
.quote {
  border-radius: var(--radius);
  padding: 28px 32px;
  background: rgba(255,255,255,0.06);
  border-left: 3px solid var(--accent-blue);
  transition: background 0.3s;
}
.quote:hover { background: rgba(255,255,255,0.10); }
.quote p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.75; font-style: italic; }
.quote-large { margin-bottom: 20px; }
.quotes-small-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote-small { border-left-color: rgba(255,255,255,0.25); }
.quote-highlight { border-left-color: var(--accent-teal); }

/* ===== CONTACTOS ===== */
.contactos-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
  align-items: center;
}
.contactos-headline {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-dark);
  margin-bottom: 20px;
}
.contactos-subline {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-mid);
  line-height: 1.8;
}
.contactos-right { display: flex; flex-direction: column; gap: 18px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: var(--card-light-bg);
  border: 1px solid var(--card-border);
  transition: all 0.3s var(--ease);
}
.contact-item:hover {
  border-color: var(--accent-blue);
  background: var(--bg-white);
  transform: translateX(4px);
}
.contact-icon { font-size: 1.3rem; flex-shrink: 0; }
.contact-item a, .contact-item span {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-dark);
}
.contact-item a:hover { color: var(--accent-blue); }

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 36px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.footer-logo { width: 36px; height: 36px; object-fit: contain; opacity: 0.8; }
.footer-copy { font-size: 0.8rem; color: rgba(255,255,255,0.55); flex: 1; }
.footer-rights { font-size: 0.78rem; color: rgba(255,255,255,0.4); }

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .acoes-grid { grid-template-columns: repeat(2, 1fr); }
  .acao-col:nth-child(2) { border-right: none; }
  .acao-col:nth-child(3) { border-top: 1px solid rgba(255,255,255,0.12); }
  .acao-col:nth-child(4) { border-top: 1px solid rgba(255,255,255,0.12); border-right: none; }
  .summary-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  :root { --section-gap: 72px; }
  .three-col { grid-template-columns: 1fr; }
  .two-col, .mv-grid, .proposta-inner, .test-inner, .contactos-inner, .como-inner { grid-template-columns: 1fr; }
  .quem-somos .two-col { grid-template-columns: 1fr; }
  .summary .container { flex-direction: column; gap: 32px; }
  .summary-list { grid-template-columns: repeat(2, 1fr); }
  .summary-logo { flex-direction: row; }
  .proposta-inner { gap: 40px; }
  .test-inner { gap: 40px; }
  .contactos-inner { gap: 40px; }
  .como-inner { gap: 40px; }
  .quotes-small-grid { grid-template-columns: 1fr; }
  .two-col-center { grid-template-columns: 1fr; max-width: 100%; }
  .card-full { grid-column: 1; }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    inset: 0;
    top: 64px;
    background: rgba(208, 214, 221, 0.99);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 40px 20px;
    overflow: visible;
  }
  .nav-menu.open { display: flex; }
  .nav-link { font-size: 1rem; padding: 12px 20px; width: 100%; text-align: center; }
  .nav-toggle { display: flex; }
  .container { padding: 0 20px; }
  .hero { padding: 90px 20px 50px; }
  .acoes-grid { grid-template-columns: 1fr; border-radius: var(--radius); }
  .acao-col { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.12); }
  .acao-col:last-child { border-bottom: none; }
  .summary-list { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; gap: 10px; }
}

@media (max-width: 480px) {
  .hero-title { font-size: clamp(2.8rem, 15vw, 5rem); }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .mv-card { padding: 28px 20px; }
  .card { padding: 24px 20px; }
}