/* ==========================================================================
   AnchorHome Marketing Website — Styles
   Organization:
   1. Reset / base
   2. Design tokens (custom properties)
   3. Layout utilities (.container, .grid)
   4. Navigation (sticky, hamburger toggle)
   5. Hero section
   6. Features section (card grid)
   7. Social proof section
   8. Footer
   9. Responsive overrides
   10. Accessibility (focus styles, reduced motion)
   ========================================================================== */

/* ==========================================================================
   1. Reset / Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1,
h2,
h3 {
  line-height: 1.2;
  font-weight: 700;
}

/* ==========================================================================
   2. Design Tokens (Custom Properties)
   ========================================================================== */

:root {
  /* Color palette */
  --color-primary: #1B6B4A;
  --color-primary-light: #2A9D6E;
  --color-secondary: #F5A623;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAF9;
  --color-text: #1A1A2E;
  --color-text-muted: #5A5A7A;
  --color-border: #E2E8F0;
  --color-footer-bg: #1A1A2E;
  --color-footer-text: #E2E8F0;

  /* Typography scale (modular, base 16px) */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3rem;

  /* Spacing scale (4px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Layout */
  --max-width: 1440px;
  --nav-height: 64px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
}

/* ==========================================================================
   3. Layout Utilities
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

/* ==========================================================================
   4. Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-5);
  height: var(--nav-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  z-index: 10;
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text);
  z-index: 10;
}

.nav-links {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-6);
  padding-top: var(--space-8);
  background-color: var(--color-bg);
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.nav-open .nav-links {
  transform: translateX(0);
}

.nav-link {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--color-text);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius);
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   5. Hero Section
   ========================================================================== */

.hero {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  background-color: var(--color-bg);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-7);
}

.hero-text {
  text-align: center;
}

.hero-text h1 {
  font-size: var(--font-size-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-5);
}

.hero-subheadline {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  max-width: 600px;
  margin-inline: auto;
}

.hero-illustration {
  display: flex;
  justify-content: center;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: background-color 0.2s ease, transform 0.1s ease;
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text);
}

.btn-secondary:hover {
  opacity: 0.9;
}

.btn-secondary:active {
  transform: scale(0.98);
}

/* ==========================================================================
   6. Features Section (Card Grid)
   ========================================================================== */

.features {
  padding-top: var(--space-9);
  padding-bottom: var(--space-9);
  background-color: var(--color-bg-alt);
}

.features h2 {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-7);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

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

.feature-icon {
  margin-inline: auto;
  margin-bottom: var(--space-4);
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.feature-card p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   7. Social Proof Section
   ========================================================================== */

.social-proof {
  padding-top: var(--space-9);
  padding-bottom: var(--space-9);
  background-color: var(--color-bg);
}

.social-proof h2 {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-7);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

.testimonial-card {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-6);
}

.testimonial-quote {
  font-size: var(--font-size-md);
  color: var(--color-text);
  font-style: italic;
  margin-bottom: var(--space-5);
  line-height: 1.6;
}

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

.testimonial-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  font-style: normal;
}

.testimonial-family {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   8. Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.footer-cta-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
}

.footer-cta-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-footer-text);
}

.footer-cta-btn {
  font-size: var(--font-size-md);
}

.footer-links ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-footer-text);
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.footer-link:hover {
  opacity: 1;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-footer-text);
  opacity: 0.6;
}

/* ==========================================================================
   9. Responsive Overrides
   ========================================================================== */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-7);
  }

  .hero {
    padding-top: var(--space-9);
    padding-bottom: var(--space-9);
  }

  .hero-text h1 {
    font-size: var(--font-size-3xl);
  }

  .hero-subheadline {
    font-size: var(--font-size-lg);
  }

  .features h2,
  .social-proof h2 {
    font-size: var(--font-size-2xl);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .testimonials-grid .testimonial-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    position: static;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-4);
    padding-top: 0;
    background-color: transparent;
    transform: none;
    transition: none;
  }

  .nav-link {
    font-size: var(--font-size-base);
  }

  .hero-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
  }

  .hero-text {
    text-align: left;
    flex: 1;
  }

  .hero-subheadline {
    margin-inline: 0;
  }

  .hero-illustration {
    flex: 1;
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }

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

  .testimonials-grid .testimonial-card:last-child {
    grid-column: auto;
    max-width: none;
    justify-self: auto;
  }
}

/* ==========================================================================
   10. Accessibility (Focus Styles, Reduced Motion)
   ========================================================================== */

/* Focus styles for all interactive elements */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.footer-link:focus-visible,
.nav-toggle:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: var(--border-radius);
}

/* Reduced motion: disable all animations and transitions */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

  .nav-links {
    transition: none;
  }
}

/* Skip link (hidden until focused) */
.skip-link {
  position: absolute;
  top: calc(-1 * var(--nav-height));
  left: var(--space-4);
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  z-index: 9999;
  transition: top 0.2s ease;
}

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

/* ==========================================================================
   11. Signup Modal
   ========================================================================== */

.signup-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: rgba(26, 26, 46, 0.6);
  backdrop-filter: blur(4px);
  padding: var(--space-5);
}

.signup-modal-overlay.is-open {
  display: flex;
}

.signup-modal {
  background-color: var(--color-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  width: 100%;
  max-width: 440px;
  padding: var(--space-7);
  position: relative;
  animation: modal-enter 0.2s ease-out;
}

@keyframes modal-enter {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.signup-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.signup-modal-header h2 {
  font-size: var(--font-size-xl);
  color: var(--color-text);
  margin: 0;
}

.signup-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: 50%;
  transition: background-color 0.15s ease, color 0.15s ease;
  flex-shrink: 0;
}

.signup-modal-close:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-text);
}

.signup-modal-body {
  display: flex;
  flex-direction: column;
}

.signup-modal-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.signup-modal-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.signup-modal-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.signup-modal-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27, 107, 74, 0.15);
}

.signup-modal-input::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.signup-modal-error {
  font-size: var(--font-size-sm);
  color: #dc3545;
  min-height: 1.25rem;
  margin: 0;
}

.signup-modal-submit {
  width: 100%;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.signup-modal-submit:hover:not(:disabled) {
  background-color: var(--color-primary-light);
}

.signup-modal-submit:active:not(:disabled) {
  transform: scale(0.98);
}

.signup-modal-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.signup-modal-consent {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.signup-modal-consent a {
  color: var(--color-primary);
  text-decoration: underline;
}

.signup-modal-consent a:hover {
  color: var(--color-primary-light);
}

.signup-modal-success {
  text-align: center;
  padding: var(--space-6) 0;
}

.signup-modal-success-message {
  font-size: var(--font-size-md);
  color: var(--color-primary);
  font-weight: 600;
  line-height: 1.5;
}

/* Reduced motion: disable modal animation */
@media (prefers-reduced-motion: reduce) {
  .signup-modal {
    animation: none;
  }
}