/* ============================================
   WAPromosi — Layout (Header, Footer, Sections)
   ============================================ */

/* --- Letter Wrapper (Long-Form Sales Letter paper) --- */
.letter-wrapper {
  max-width: var(--max-width-letter);
  margin: 0 auto;
  background: var(--color-bg);
  box-shadow:
    0 0 0 1px rgba(0,0,0,0.04),
    0 4px 40px rgba(0,0,0,0.06),
    0 1px 3px rgba(0,0,0,0.04);
  position: relative;
}

.letter-wrapper-wide {
  max-width: 1040px;
}

/* On large screens, add visual "paper edge" effect */
@media (min-width: 860px) {
  .letter-wrapper {
    margin-top: 0;
    border-left: 1px solid rgba(0,0,0,0.06);
    border-right: 1px solid rgba(0,0,0,0.06);
  }
}

/* Inside the letter, containers should match the narrower width */
.letter-wrapper .container {
  max-width: 100%;
  padding: 0 clamp(2rem, 5vw, 3.5rem);
}

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

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

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

/* --- Section --- */
.section {
  padding: var(--section-padding-y) 0;
}

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

.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.section-dark h2,
.section-dark h3 {
  color: #fff;
}

.section-dark p {
  color: var(--color-text-on-dark-muted);
}

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

.section-header {
  text-align: center;
  max-width: var(--max-width-text);
  margin: 0 auto 3rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--color-text-light);
  font-size: var(--font-size-body-lg);
}

/* --- Header / Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-base);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  padding: 0.75rem 0;
}

.navbar .container {
  max-width: var(--max-width-letter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar-logo img {
  height: 36px;
  width: auto;
}

.navbar-logo .logo-text {
  background: linear-gradient(135deg, var(--color-primary), #22963f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-nav a {
  padding: 0.5rem 0.875rem;
  font-size: var(--font-size-small);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.navbar-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.navbar-nav .btn {
  padding: 0.5rem 1.25rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-heading);
  border-radius: 2px;
  transition: all var(--transition-base);
}

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

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

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

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 4rem 0 2rem;
  margin: 0 auto;
  max-width: var(--max-width-letter); /* Default to standard letter width */
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* On docs page (wide letter), footer should also be wide */
.docs-page .footer {
  max-width: 1040px;
}

.footer .container {
  width: 100%;
  padding: 0 clamp(2rem, 5vw, 3.5rem);
}

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

.footer-brand p {
  color: var(--color-text-on-dark-muted);
  font-size: var(--font-size-small);
  margin-top: 1rem;
  line-height: 1.6;
}

.footer-col h4 {
  color: #fff;
  font-size: var(--font-size-small);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-col ul li {
  margin-bottom: 0.625rem;
}

.footer-col ul li a {
  color: var(--color-text-on-dark-muted);
  font-size: var(--font-size-small);
  transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
  color: #fff;
}
.footer-partner-logo {
  height: 32px;
  width: auto;
  opacity: 0.8;
  margin-top: 1.5rem;
  display: block;
  transition: opacity var(--transition-fast);
}

.footer-partner-logo:hover {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-on-dark-muted);
}

.footer-bottom a {
  color: var(--color-text-on-dark-muted);
}

.footer-bottom a:hover {
  color: #fff;
}

.footer-heart {
  color: var(--color-danger);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .navbar-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    padding: 5rem 2rem 2rem;
    gap: 0.25rem;
    box-shadow: -10px 0 30px rgba(0,0,0,0.1);
    transition: right var(--transition-base);
    align-items: stretch;
  }

  .navbar-nav.open {
    right: 0;
  }

  .navbar-nav a {
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}