/* =====================================================
   FAS Brasil — Reset & Base Styles
   ===================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-surface);
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}

p {
  line-height: var(--leading-normal);
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

::selection {
  background-color: var(--color-green);
  color: var(--color-white);
}

:focus-visible {
  outline: 2px solid var(--color-green);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Container ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--container-md);
}

.container--wide {
  max-width: var(--container-2xl);
}

/* ── Section Spacing ──────────────────────────────── */
.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

.section--lg {
  padding-block: var(--space-32);
}

.section--dark {
  background-color: var(--color-blue);
  color: var(--color-white);
}

.section--darker {
  background-color: var(--color-dark-bg);
  color: var(--color-white);
}

.section--accent {
  background-color: var(--color-green);
  color: var(--color-white);
}

.section--muted {
  background-color: var(--color-bg);
}

/* ── Section Headers ──────────────────────────────── */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-green);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: var(--weight-extra);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-5);
}

.section-title span {
  color: var(--color-green);
}

.section-title--white {
  color: var(--color-white);
}

.section-subtitle {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  max-width: 56ch;
}

.section-header {
  margin-bottom: var(--space-16);
}

.section-header--center {
  text-align: center;
}

.section-header--center .section-label {
  justify-content: center;
}

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

/* ── Buttons ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  font-weight: var(--weight-semi);
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  transition: all var(--transition-spring);
  cursor: pointer;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.btn:hover::after {
  background: rgba(255,255,255,0.08);
}

.btn--primary {
  background: var(--color-green);
  color: var(--color-white);
  box-shadow: var(--shadow-green);
}

.btn--primary:hover {
  background: var(--color-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(17, 127, 96, 0.38);
}

.btn--blue {
  background: var(--color-blue);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn--blue:hover {
  background: var(--color-blue-mid);
  transform: translateY(-2px);
}

.btn--outline {
  border-color: currentColor;
  color: var(--color-green);
  background: transparent;
}

.btn--outline:hover {
  background: var(--color-green);
  color: var(--color-white);
  border-color: var(--color-green);
}

.btn--outline-white {
  border-color: rgba(255,255,255,0.5);
  color: var(--color-white);
  background: rgba(255,255,255,0.05);
}

.btn--outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.9);
}

.btn--lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-xs);
}

.btn svg, .btn .icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* ── Cards ────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card__body {
  padding: var(--space-8);
}

/* ── Badges ───────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-semi);
  letter-spacing: 0.04em;
  border-radius: var(--radius-full);
}

.badge--green {
  background: rgba(17, 127, 96, 0.12);
  color: var(--color-green);
}

.badge--blue {
  background: rgba(6, 56, 91, 0.10);
  color: var(--color-blue);
}

/* ── Dividers ─────────────────────────────────────── */
.divider {
  width: 48px;
  height: 4px;
  background: var(--color-green);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.divider--center {
  margin-inline: auto;
}

/* ── Grid Layouts ─────────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* ── Flex Utilities ───────────────────────────────── */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Tag / Chip ───────────────────────────────────── */
.tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-gray-ultra);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── Animated gradient text ───────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Accessibility Helpers ────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  padding: var(--space-3) var(--space-6);
  background: var(--color-green);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semi);
  z-index: var(--z-float);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ── Scroll Animation Classes ─────────────────────── */
[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-left"] {
  transform: translateX(-24px);
}

[data-aos="fade-left"].is-visible {
  transform: translateX(0);
}

[data-aos="fade-right"] {
  transform: translateX(24px);
}

[data-aos="fade-right"].is-visible {
  transform: translateX(0);
}

[data-aos="zoom-in"] {
  transform: scale(0.92);
}

[data-aos="zoom-in"].is-visible {
  transform: scale(1);
}

/* ── Loader ───────────────────────────────────────── */
#page-loader {
  position: fixed;
  inset: 0;
  background: var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  animation: loaderPulse 1.5s ease-in-out infinite;
}

@keyframes loaderPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

.loader-bar {
  width: 200px;
  height: 2px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.loader-bar::after {
  content: '';
  display: block;
  height: 100%;
  background: var(--color-green);
  border-radius: var(--radius-full);
  animation: loaderProgress 1.2s ease-in-out forwards;
}

@keyframes loaderProgress {
  0%   { width: 0%; }
  100% { width: 100%; }
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding-block: var(--space-16);
  }

  .section--lg {
    padding-block: var(--space-20);
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .container {
    padding-inline: var(--space-5);
  }
}

@media (max-width: 480px) {
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-group .btn {
    justify-content: center;
  }
}