@layer base {
  /* ========================================================================
     BASE LAYOUT: HTML, BODY, CORE CONTAINERS
     ======================================================================== */

  html, body {
    height: 100%;
  }

  body {
    font-family: var(--font-sans);
    background-color: var(--color-canvas);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
  }

  /* Main content container */
  .app-main {
    width: 100%;
    max-width: var(--main-width);
    margin-inline: auto;
    margin-block-start: var(--space-lg);
    padding-inline: var(--main-padding);
    display: block;
    flex: 1 0 auto;
  }

  .form-container {
    margin-inline: auto;
    width: 100%;
    max-width: 66.666%;
  }

  .admin-container {
    width: 100%;
    margin-inline: auto;
    padding: var(--space-lg);
  }

  @media (max-width: 768px) {
    .app-main {
      width: 100%;
      padding-inline: var(--space-sm);
    }
    .form-container {
      max-width: 100%;
      padding-inline: var(--space-sm);
    }
    .admin-container {
      padding: var(--space-md);
    }
  }

  /* ========================================================================
     HEADER & NAVIGATION
     ======================================================================== */

  .site-header {
    border-block-end: var(--border);
    padding-block: var(--space-md);
    background-color: var(--color-background-secondary);
  }

  .site-header__inner {
    max-width: var(--main-width);
    margin-inline: auto;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: start;
    column-gap: var(--space-md);
    row-gap: 0; /* var(--space-xs) */
    padding-inline: var(--main-padding);
  }

  .site-title {
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    font-size: var(--text-normal);
  }

  .site-nav {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: var(--space-md);
    row-gap: 0;
    align-content: flex-start;
    min-width: 0;
  }

  .site-nav a {
    text-decoration: none;
    line-height: 1;
  }

  .site-nav .link-muted {
    color: var(--color-text-muted);
  }

  .site-nav .btn-primary {
    margin-inline-start: var(--space-sm);
  }

  .site-nav form {
    display: inline;
  }

  .site-nav__sign-out {
    justify-self: end;
    align-self: start;
  }

  /* ========================================================================
     HERO SECTION
     ======================================================================== */

  .home-hero {
    display: block;
    padding: var(--space-3xl) var(--main-padding);
    background: linear-gradient(180deg, var(--color-primary) 0.04%, transparent);
  }

  .home-hero__inner {
    max-width: var(--main-width);
    margin-inline: auto;
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: var(--space-md);
    align-items: start;
  }

  .home-hero .hero-visual {
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #DDEEFF, #F6FBFF);
    height: 80px;
    max-width: 140px;
    justify-self: center;
    overflow: hidden;
  }

  .home-hero .hero-visual svg {
    width: 100% !important;
    height: auto !important;
    max-width: 140px;
    display: block;
  }

  .home-hero .hero-title {
    margin: 0;
    font-size: var(--text-large);
    font-weight: var(--font-weight-bold);
  }

  .home-hero .hero-sub {
    margin: 0;
    color: var(--color-text-muted);
  }

  .hero-title {
    font-size: var(--text-xx-large);
    line-height: 1.05;
    margin-block-end: var(--space-sm);
    color: var(--color-text);
  }

  .hero-sub {
    font-size: 1.125rem;
    margin-block-end: var(--space-lg);
    color: var(--color-text-muted);
    max-width: 48rem;
  }

  .hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
  }

  .hero-cta {
    padding: 0.7rem 1.1rem;
    font-size: 1.02rem;
    border-radius: var(--radius-lg);
  }

  .hero-cta.secondary {
    background-color: transparent;
    border: var(--border);
    color: var(--color-text);
    padding: 0.55rem 0.9rem;
    border-radius: var(--radius-md);
  }

  /* ========================================================================
     TESTIMONIAL & TRUST SECTIONS
     ======================================================================== */

  .testimonial {
    margin-block-start: var(--space-lg);
    padding: var(--space-lg);
    background-color: var(--color-canvas);
    border: var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    max-width: 46rem;
  }

  .testimonial blockquote {
    margin: 0 0 var(--space-sm) 0;
    font-style: italic;
    color: var(--color-text);
  }

  .testimonial .source {
    font-size: var(--text-small);
    color: var(--color-text-muted);
  }

  .trust-row {
    margin-block-start: var(--space-xl);
    display: flex;
    gap: var(--space-xl);
    align-items: center;
    flex-wrap: wrap;
  }

  .trust-row__item {
    opacity: 0.85;
    filter: grayscale(100%);
    height: 28px;
  }

  /* ========================================================================
     FEATURE CARDS & SECTIONS
     ======================================================================== */

  .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-block-start: var(--space-2xl);
  }

  .feature-card {
    padding: var(--space-md);
    background-color: var(--color-canvas);
    border: var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
  }

  .feature-card h3 {
    margin: 0 0 var(--space-sm) 0;
    font-size: 1.05rem;
  }

  .section-title {
    font-size: 1.25rem;
    margin: 0 0 var(--space-sm) 0;
  }

  .features-list {
    list-style: disc;
    margin-inline-start: var(--space-lg);
    color: var(--color-text);
  }

  .features-list li {
    margin-block-end: var(--space-sm);
  }

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

  .site-footer {
    border-block-start: var(--border);
    padding-block: var(--space-md);
    padding-inline: var(--main-padding);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--text-small);
    margin-block-start: var(--space-2xl);
    background-color: transparent;
  }

  .site-footer__inner {
    max-width: var(--main-width);
    margin-inline: auto;
    display: flex;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
  }

  .site-footer a {
    color: var(--color-text-muted);
    text-decoration: none;
    margin-inline: var(--space-sm);
  }

  .site-footer a:hover {
    text-decoration: underline;
  }

  /* ========================================================================
     RESPONSIVE LAYOUT
     ======================================================================== */

  @media (max-width: 980px) {
    .home-hero__inner {
      grid-template-columns: 1fr;
    }

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

    .home-hero .hero-visual {
      height: 120px;
      max-width: 100%;
      justify-self: center;
    }
  }

  @media (max-width: 900px) {
    .home-hero {
      flex-direction: column;
      padding: var(--space-lg);
    }

    .home-hero .hero-visual {
      width: 100%;
      min-height: 120px;
    }
  }

  @media (max-width: 768px) {
    .site-footer {
      padding: var(--space-md) var(--space-sm);
    }
  }
}