/* =============================================
   Amigos com Propósito — Design System
   ============================================= */

:root {
  --blue-900: #1e4a8a;
  --blue-700: #2563b8;
  --blue-500: #4759e1;
  --blue-400: #5b9cf6;
  --blue-100: #e8f2ff;
  --blue-50: #f4f9ff;

  --pink-500: #ff3694;
  --pink-400: #f472b6;
  --pink-100: #fce7f3;

  --warm-50: #fffbf7;
  --warm-100: #fff5eb;

  --white: #ffffff;
  --gray-700: #374151;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --gray-200: #e5e7eb;
  --gray-100: #f3f4f6;

  --shadow-sm: 0 2px 8px rgba(30, 74, 138, 0.08);
  --shadow-md: 0 8px 24px rgba(30, 74, 138, 0.12);
  --shadow-lg: 0 16px 48px rgba(30, 74, 138, 0.16);

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --radius-full: 9999px;

  --font: "Nunito", system-ui, -apple-system, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--gray-700);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue-700);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--pink-500);
}

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

/* Typography */
.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pink-500);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--blue-900);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 640px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    background var(--transition);
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--pink-500), var(--pink-400));
  color: var(--white);
  box-shadow: 0 4px 16px rgba(236, 72, 153, 0.35);
}

.btn-primary:hover {
  color: var(--white);
  box-shadow: 0 8px 24px rgba(236, 72, 153, 0.45);
}

.btn-secondary {
  background: var(--white);
  color: var(--blue-700);
  border: 2px solid var(--blue-100);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  color: var(--blue-900);
  border-color: var(--blue-400);
  background: var(--blue-50);
}

.btn-icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;

  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
  background: var(--blue-500);
  backdrop-filter: blur(12px);
}

.header.scrolled .logo-link img {
  opacity: 1;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo-link img {
  height: 4rem;
  width: auto;
  opacity: 1;
}

@media (min-width: 768px) {
  .logo-link img {
    opacity: 0;
  }
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links {
  display: none;
  list-style: none;
  gap: 1.75rem;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--white);
}

.nav-links a:hover {
  color: var(--blue-200);
}

.nav-cta {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

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

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: 65px;
  background: var(--white);
  padding: 2rem;
  z-index: 99;
  flex-direction: column;
  gap: 1.5rem;
}

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

.mobile-nav a {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-700);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gray-100);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  background:
    radial-gradient(
      circle at 50% 20%,
      rgba(123, 136, 255, 0.45),
      transparent 35%
    ),
    radial-gradient(
      circle at 15% 90%,
      rgba(102, 118, 255, 0.18),
      transparent 30%
    ),
    radial-gradient(
      circle at 85% 85%,
      rgba(83, 98, 230, 0.18),
      transparent 30%
    ),
    linear-gradient(
      180deg,
      #586af2 0%,
      #4e61ea 18%,
      #4759e1 48%,
      #4254db 72%,
      #3f51d6 100%
    );
  overflow: hidden;
}

.hero-pattern {
  display: none;
  position: absolute;
  inset: 0;
  background-image: url("/assets/bg.webp");
  pointer-events: none;
  background-size: 80%; /* scales image to always fill the div */
  background-position: bottom right; /* anchors it to bottom-right */
  background-repeat: no-repeat; /* prevents tiling */
}

@media (min-width: 1024px) {
  .hero-pattern {
    display: block;
  }
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 4rem;
}

@media (min-width: 768px) {
  .hero-content {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-text {
  color: var(--white);
}

.hero-logo {
  width: 7rem;
  margin-bottom: 3rem;
  display: none;
}

@media (min-width: 768px) {
  .hero-logo {
    display: block;
  }
}

.hero-badge svg {
  color: var(--pink-400);
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-title span {
  color: var(--pink-400);
}

.hero-description {
  font-size: 1.125rem;
  opacity: 0.92;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9375rem;
  font-weight: 600;
}

.hero-meta-item svg {
  flex-shrink: 0;
  opacity: 0.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-logo-card {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.hero-logo-card img {
  width: min(320px, 80vw);
  border-radius: var(--radius-md);
}

/* Sections */
section {
  padding: 5rem 0;
}

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

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

/* About */
.about {
  /* background: var(--blue-50); */
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.about-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  text-align: center;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

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

.about-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: var(--blue-50);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue-700);
}

.about-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-900);
  margin-bottom: 0.75rem;
}

.about-card p {
  color: var(--gray-600);
  font-size: 0.9375rem;
}

/* Sponsors */
.sponsors {
  background: var(--blue-50);
}

.sponsor-tier {
  margin-bottom: 3rem;
}

.sponsor-tier:last-child {
  margin-bottom: 0;
}

.sponsor-tier-label {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
}

.sponsor-tier--principal .sponsor-tier-label {
  color: var(--blue-700);
  font-size: 1rem;
}

.sponsor-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.sponsor-item {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  padding: 1.25rem;
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.sponsor-item:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-400);
}

.sponsor-item img {
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter var(--transition);
}

.sponsor-item:hover img {
  filter: grayscale(0%);
}

/* Sponsor sizes */
.sponsor-tier--principal .sponsor-item {
  padding: 2rem 3rem;
  min-width: 280px;
}

.sponsor-tier--principal .sponsor-item img {
  height: 80px;
  width: auto;
  max-width: 240px;
}

.sponsor-tier--ouro .sponsor-item {
  padding: 1.5rem 2rem;
  min-width: 180px;
}

.sponsor-tier--ouro .sponsor-item img {
  height: 56px;
  width: auto;
  max-width: 160px;
}

.sponsor-tier--apoiador .sponsor-item {
  padding: 1rem 1.5rem;
  min-width: 120px;
}

.sponsor-tier--apoiador .sponsor-item img {
  height: 40px;
  width: auto;
  max-width: 120px;
}

/* Institutions */
.institutions {
  background: var(--white);
}

.institution-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .institution-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.institution-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

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

.institution-photo {
  height: 200px;
  overflow: hidden;
}

.institution-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.institution-card:hover .institution-photo img {
  transform: scale(1.05);
}

.institution-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.institution-body h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: 0.75rem;
}

.institution-body p {
  font-size: 0.9375rem;
  color: var(--gray-600);
  flex: 1;
  margin-bottom: 1.25rem;
}

.institution-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--pink-500);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  padding: 0;
  transition: gap var(--transition);
}

.institution-link:hover {
  gap: 0.625rem;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--pink-500), var(--pink-400));
  padding: 4rem 0;
  text-align: center;
}

.cta-banner h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1rem;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 560px;
  margin-inline: auto;
}

/* Footer */
.footer {
  background: var(--blue-500);
  color: rgba(255, 255, 255, 0.8);
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand img {
  height: 56px;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9375rem;
  max-width: 320px;
}

.footer h4 {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: var(--pink-400);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(30, 74, 138, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 2rem 1rem;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition),
    visibility var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  width: min(720px, 100%);
  margin-top: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-header {
  position: relative;
  height: 240px;
  overflow: hidden;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.95);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-700);
  transition:
    background var(--transition),
    transform var(--transition);
  box-shadow: var(--shadow-sm);
}

.modal-close:hover {
  background: var(--white);
  transform: scale(1.05);
}

.modal-body {
  padding: 2rem;
}

.modal-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--blue-900);
  margin-bottom: 0.5rem;
}

.modal-section {
  margin-top: 1.75rem;
}

.modal-section h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-700);
  margin-bottom: 0.75rem;
}

.modal-section h3 svg {
  flex-shrink: 0;
}

.modal-section p,
.modal-section li {
  font-size: 0.9375rem;
  color: var(--gray-600);
}

.modal-section ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.modal-section li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.modal-section li::before {
  content: "♥";
  color: var(--pink-500);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}

.bank-details {
  background: var(--blue-50);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  border: 1px solid var(--blue-100);
}

.bank-details dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1rem;
  font-size: 0.9375rem;
}

.bank-details dt {
  font-weight: 700;
  color: var(--blue-900);
}

.bank-details dd {
  color: var(--gray-600);
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.875rem;
}

.modal-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.modal-gallery img {
  border-radius: var(--radius-sm);
  height: 140px;
  width: 100%;
  object-fit: cover;
}

.modal-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
}

.modal-contact a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.modal-actions {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}