/* ============================================================
   Global Shapers Hub Brasília — styles.css
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --blue-dark:   #1a3c6e;
  --blue-mid:    #1e4d8c;
  --teal:        #00a3a3;
  --teal-hover:  #008080;
  --white:       #ffffff;
  --off-white:   #f5f7fa;
  --gray-light:  #e8ecf0;
  --gray-text:   #64748b;
  --text:        #1e293b;
  --shadow:      0 4px 24px rgba(26, 60, 110, 0.10);
  --shadow-card: 0 2px 12px rgba(26, 60, 110, 0.08);
  --radius:      12px;
  --transition:  0.3s ease;
}

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

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: 'Poppins', sans-serif;
  line-height: 1.25;
}

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

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

ul { list-style: none; }

/* ---------- Container ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Sections ---------- */
section { padding: 80px 0; }

.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-text);
  max-width: 640px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: none;
}

.btn-primary {
  background: var(--teal);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(0, 163, 163, 0.40);
}

.btn-primary:hover {
  background: var(--teal-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 163, 163, 0.50);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
}

.btn-lg {
  padding: 18px 48px;
  font-size: 1.15rem;
}

/* Pulse animation for hero CTA */
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(0, 163, 163, 0.55); }
  70%  { box-shadow: 0 0 0 18px rgba(0, 163, 163, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 163, 163, 0); }
}

.btn-pulse {
  animation: pulse-ring 2.4s infinite;
}

/* ---------- Navbar ---------- */
#navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
  padding: 20px 0;
}

#navbar.scrolled {
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 12px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 112px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}

#navbar.scrolled .nav-logo-img {
  filter: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
  transition: color var(--transition), background var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  background: rgba(255,255,255,0.15);
}

#navbar.scrolled .nav-links a {
  color: var(--gray-text);
}

#navbar.scrolled .nav-links a:hover,
#navbar.scrolled .nav-links a.active {
  color: var(--blue-dark);
  background: var(--off-white);
}

.nav-join {
  background: var(--teal) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
  padding: 8px 20px !important;
}

.nav-join:hover {
  background: var(--teal-hover) !important;
}

#navbar.scrolled .nav-join {
  color: var(--white) !important;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.15);
  border-radius: 50px;
  padding: 3px;
  gap: 2px;
  transition: background var(--transition);
}

#navbar.scrolled .lang-toggle {
  background: var(--gray-light);
}

.lang-btn {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.7);
  transition: all var(--transition);
  font-family: 'Inter', sans-serif;
}

.lang-btn.active {
  background: var(--white);
  color: var(--blue-dark);
}

#navbar.scrolled .lang-btn { color: var(--gray-text); }
#navbar.scrolled .lang-btn.active {
  background: var(--blue-dark);
  color: var(--white);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

#navbar.scrolled .nav-hamburger span { background: var(--blue-dark); }

/* Mobile menu */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 24px 20px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  padding: 10px 14px;
  border-radius: 8px;
  font-weight: 500;
  color: var(--text);
  transition: background var(--transition);
}

.nav-mobile a:hover { background: var(--off-white); }

.nav-mobile .nav-join {
  background: var(--teal) !important;
  color: var(--white) !important;
  margin-top: 4px;
  text-align: center;
}

/* ---------- Hero ---------- */
#hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--blue-dark) 0%, #0d2a52 55%, #0a3d4a 100%);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
}

/* Decorative circles */
#hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  top: -120px;
  right: -160px;
  pointer-events: none;
}

#hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 163, 163, 0.15) 0%, transparent 70%);
  bottom: -80px;
  left: 10%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-block;
  background: rgba(0, 163, 163, 0.2);
  color: #4dd9d9;
  border: 1px solid rgba(0, 163, 163, 0.35);
  border-radius: 50px;
  padding: 6px 18px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.6rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.15;
}

.hero-title span { color: #4dd9d9; }

.hero-desc {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.80);
  max-width: 580px;
  margin: 0 auto 40px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* Stats note */
.stats-note {
  font-size: 0.6rem;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

/* Stats strip */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 680px;
  margin: 0 auto;
}

.stat-item {
  background: rgba(255,255,255,0.06);
  padding: 20px 16px;
  text-align: center;
  backdrop-filter: blur(4px);
}

.stat-number {
  font-family: 'Poppins', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: #4dd9d9;
  display: block;
}

.stat-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-top: 2px;
}

/* ---------- About ---------- */
#about {
  background: var(--white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-pillars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.pillar-card {
  background: var(--off-white);
  border-radius: var(--radius);
  padding: 20px;
  border-left: 3px solid var(--teal);
}

.pillar-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 6px;
}

.pillar-card p {
  font-size: 0.82rem;
  color: var(--gray-text);
  line-height: 1.5;
}

.about-visual {
  background: linear-gradient(135deg, var(--blue-dark), #0a3d4a);
  border-radius: 20px;
  padding: 40px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.about-visual::before {
  content: '';
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
  top: -60px;
  right: -60px;
}

.about-visual-quote {
  font-size: 1.15rem;
  font-style: italic;
  color: rgba(255,255,255,0.9);
  line-height: 1.7;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.about-visual-quote::before {
  content: '\201C';
  font-size: 4rem;
  color: var(--teal);
  line-height: 0;
  position: absolute;
  top: 20px;
  left: -8px;
  opacity: 0.6;
}

.about-visual-attr {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  position: relative;
  z-index: 1;
}

.about-visual-attr strong {
  color: #4dd9d9;
  display: block;
  font-size: 0.95rem;
}

/* ---------- Hub Brasília ---------- */
#hub {
  background: var(--off-white);
}

.hub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.hub-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.hub-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 16px;
}

.hub-card p {
  font-size: 0.9rem;
  color: var(--gray-text);
  line-height: 1.65;
}


/* ---------- Impact Areas ---------- */
#impact {
  background: var(--white);
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.impact-card {
  border-radius: var(--radius);
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--gray-light);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.impact-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--teal);
}

.impact-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue-dark), #1e4d8c);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.impact-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 8px;
}

.impact-card p {
  font-size: 0.85rem;
  color: var(--gray-text);
  line-height: 1.55;
}

/* ---------- Roles ---------- */
.roles-bg-logo {
  position: absolute;
  width: 560px;
  height: auto;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.04;
  pointer-events: none;
  user-select: none;
}

#roles {
  background: var(--off-white);
  position: relative;
  overflow: hidden;
}

.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.role-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition);
}

.role-card:hover { transform: translateY(-4px); }

.role-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue-mid));
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
}

.role-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 10px;
}

.role-card p {
  font-size: 0.85rem;
  color: var(--gray-text);
  line-height: 1.6;
}

/* ---------- Opportunities ---------- */
#opportunities {
  background: var(--white);
  overflow: hidden;
}

.opp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.opp-card {
  border-radius: var(--radius);
  padding: 24px;
  background: var(--off-white);
  border-top: 3px solid var(--teal);
  transition: transform var(--transition), box-shadow var(--transition);
}

.opp-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.opp-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 8px;
}

.opp-card p {
  font-size: 0.82rem;
  color: var(--gray-text);
  line-height: 1.55;
}

/* ---------- Sign-up CTA ---------- */
#signup {
  background: linear-gradient(135deg, var(--blue-dark) 0%, #0d2a52 60%, #0a3d4a 100%);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
  text-align: center;
}


.signup-bg-logo {
  position: absolute;
  width: 560px;
  height: auto;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  filter: brightness(0) invert(1);
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
}

#signup::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  top: -150px;
  left: -100px;
  pointer-events: none;
}

#signup::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 163, 163, 0.18) 0%, transparent 70%);
  bottom: -60px;
  right: 10%;
  pointer-events: none;
}

.signup-content { position: relative; z-index: 1; }

.signup-title {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.signup-title span { color: #4dd9d9; }

.signup-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.78);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.signup-criteria {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.criteria-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.78);
  font-size: 0.9rem;
}

.criteria-item .check {
  width: 22px;
  height: 22px;
  background: rgba(0, 163, 163, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: #4dd9d9;
  flex-shrink: 0;
}

/* ---------- Footer ---------- */
footer {
  background: #0d1b2e;
  color: rgba(255,255,255,0.55);
  text-align: center;
  padding: 32px 24px;
  font-size: 0.85rem;
}

footer a {
  color: rgba(255,255,255,0.7);
  transition: color var(--transition);
}

footer a:hover { color: var(--teal); }

/* ---------- Scroll-reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-stats       { grid-template-columns: repeat(2, 1fr); }
  .impact-grid      { grid-template-columns: repeat(2, 1fr); }
  .roles-grid       { grid-template-columns: repeat(2, 1fr); }
  .opp-grid         { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  section { padding: 60px 0; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .about-grid   { grid-template-columns: 1fr; gap: 32px; }
  .hub-grid     { grid-template-columns: 1fr; }
  .impact-grid  { grid-template-columns: 1fr 1fr; }
  .roles-grid   { grid-template-columns: 1fr 1fr; }
  .opp-grid     { grid-template-columns: 1fr 1fr; }

  .hero-stats   { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .impact-grid  { grid-template-columns: 1fr; }
  .roles-grid   { grid-template-columns: 1fr; }
  .opp-grid     { grid-template-columns: 1fr; }
  .about-pillars { grid-template-columns: 1fr; }
  .hero-cta-group { flex-direction: column; }
  .signup-criteria { flex-direction: column; align-items: center; }
}