/* ============================================================
   MÍDIA 43 — Components: Nav, Header, Footer, Buttons, Cards
   ============================================================ */

/* ---- NAVIGATION ------------------------------------------ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-normal),
              border-color var(--transition-normal);
}

.site-nav--scrolled {
  background: rgba(10, 10, 10, 0.97);
  border-bottom-color: rgba(255,255,255,0.12);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-mark {
  width: 38px;
  height: 38px;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: var(--font-weight-black);
  color: #000;
  letter-spacing: -0.04em;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.nav__logo:hover .nav__logo-mark {
  transform: scale(1.05);
  box-shadow: var(--shadow-accent);
}

.nav__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.nav__logo-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-black);
  color: var(--color-text-primary);
  letter-spacing: -0.04em;
}

.nav__logo-tagline {
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 1px;
}

/* Nav links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  position: relative;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast),
              background var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-text-primary);
  background: rgba(255,255,255,0.05);
}

.nav__link--active {
  color: var(--color-text-primary);
}

.nav__link--active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav__cta {
  margin-left: var(--space-4);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

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

.nav__hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal),
              opacity var(--transition-normal);
  transform-origin: center;
}

.nav__hamburger--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger--open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4);
  z-index: calc(var(--z-nav) - 1);
  transform: translateY(-10px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-normal),
              opacity var(--transition-normal);
}

.nav__mobile--visible {
  display: block;
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast),
              background var(--transition-fast);
}

.nav__mobile-link:hover,
.nav__mobile-link--active {
  color: var(--color-text-primary);
  background: rgba(255,255,255,0.05);
}

.nav__mobile-link--active {
  color: var(--color-accent);
}

.nav__mobile-cta {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ---- BUTTONS --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.01em;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              background var(--transition-fast),
              color var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn:active { transform: scale(0.97); }

/* Primary */
.btn--primary {
  background: var(--color-accent);
  color: #000;
}
.btn--primary:hover {
  background: var(--color-accent-light);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}

/* Secondary / Outlined */
.btn--outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

/* Ghost accent */
.btn--ghost {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid var(--color-border-accent);
}
.btn--ghost:hover {
  background: rgba(34,197,94,0.15);
  box-shadow: 0 0 16px rgba(34,197,94,0.2);
  transform: translateY(-1px);
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
}
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  border-radius: var(--radius-lg);
}

/* Icon */
.btn__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ---- CARDS ----------------------------------------------- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition-normal),
              background var(--transition-normal),
              transform var(--transition-normal),
              box-shadow var(--transition-normal);
}

.card--hoverable:hover {
  border-color: var(--color-border-accent);
  background: var(--color-bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md), 0 0 20px var(--color-accent-glow);
}

/* ---- BADGE ---------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
}

.badge--accent {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid var(--color-border-accent);
}

/* ---- FOOTER --------------------------------------------- */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.8fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-black);
  color: var(--color-text-primary);
  letter-spacing: -0.04em;
  margin-bottom: var(--space-3);
}

.footer__brand-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  max-width: 28ch;
  margin-bottom: var(--space-6);
}

.footer__socials {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast),
              background var(--transition-fast),
              border-color var(--transition-fast);
}

.footer__social-link:hover {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  border-color: var(--color-border-accent);
}

.footer__social-link svg {
  width: 16px;
  height: 16px;
}

.footer__col-title {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover { color: var(--color-accent); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copy {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bottom-link {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__bottom-link:hover { color: var(--color-accent); }

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

.stat-item {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.stat-item__number {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  font-weight: var(--font-weight-black);
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.04em;
}

.stat-item__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* ---- PAGE HERO ------------------------------------------- */
.page-hero {
  padding-top: calc(var(--nav-height) + var(--space-16));
  padding-bottom: var(--space-16);
  background: linear-gradient(
    180deg,
    rgba(34,197,94,0.04) 0%,
    transparent 100%
  );
  border-bottom: 1px solid var(--color-border);
}

.page-hero__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.page-hero__title {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-6xl));
  font-weight: var(--font-weight-black);
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: var(--space-5);
}

.page-hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 52ch;
}