/* ============================================
   LAYOUT CSS - Lucas Frete
   Header, footer, container, grid
   ============================================ */

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

/* --- Section --- */
.section {
  padding: var(--space-3xl) 0;
}

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

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-white);
}

.section--dark p {
  color: var(--color-light-gray);
}

.section--gray {
  background-color: var(--color-off-white);
}

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

.section--accent h2,
.section--accent h3,
.section--accent p {
  color: var(--color-white);
}

/* --- Section Header --- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  font-size: var(--text-md);
}

.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

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

/* ============================================
   HEADER
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background-color: transparent;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
  padding: var(--space-sm) 0;
}

.header.scrolled {
  background-color: var(--color-graphite);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
}

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

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: var(--z-modal);
}

.header__logo-img {
  height: 38px;
  width: auto;
}

.header__logo-text {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-white);
  letter-spacing: -0.01em;
}

.header__logo-text span {
  color: var(--color-accent);
}

/* --- Nav --- */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header__nav-list {
  display: flex;
  gap: var(--space-md);
}

.header__nav-link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--color-white);
}

.header__nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
  width: 100%;
}

.header__cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  background-color: var(--color-accent);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.header__cta:hover {
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-1px);
}

.header__cta svg {
  width: 18px;
  height: 18px;
}

/* --- Mobile Menu Toggle --- */
.header__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: var(--z-modal);
  padding: 4px;
}

.header__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.header__toggle.active span:nth-child(2) {
  opacity: 0;
}

.header__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-black);
  color: var(--color-light-gray);
  padding: var(--space-3xl) 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand p {
  color: var(--color-gray);
  font-size: var(--text-sm);
  margin-top: var(--space-sm);
  line-height: 1.7;
  max-width: 340px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-xs);
}

.footer__logo-text {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-white);
}

.footer__logo-text span {
  color: var(--color-accent);
}

.footer__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-gray);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-white);
}

.footer__bottom {
  padding: var(--space-md) 0;
  text-align: center;
}

.footer__bottom p {
  font-size: var(--text-xs);
  color: var(--color-gray);
}