/* ============================================================
   Foreclosure Atlas — Core Stylesheet
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #1e3a5f;
  --color-primary-light: #2a5a8f;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-bg: #ffffff;
  --color-bg-subtle: #f8fafc;
  --color-bg-code: #1e293b;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-border: #e2e8f0;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --max-width: 1200px;
  --max-width-narrow: 800px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
}

h1 { font-size: 3rem; letter-spacing: -0.025em; }
h2 { font-size: 2rem; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-subtle);
  padding: 0.125em 0.375em;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

/* Reset code styles inside pre/code blocks */
pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
  border-radius: 0;
  line-height: inherit;
}

/* --- Utilities --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

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

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

.section {
  padding: var(--space-4xl) 0;
}

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

.section__heading {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.section__subheading {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

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

.logo {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.logo strong {
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__links {
  display: none;
  list-style: none;
  gap: var(--space-xl);
  align-items: center;
}

.nav__links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-primary);
}

.nav__cta {
  display: none;
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.site-header.nav-open .hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.nav-open .hamburger span:nth-child(2) {
  opacity: 0;
}

.site-header.nav-open .hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
}

.site-header.nav-open .mobile-menu {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: var(--space-sm) 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.mobile-menu a:hover {
  color: var(--color-primary);
}

.mobile-menu .btn {
  margin-top: var(--space-md);
  width: 100%;
}

/* --- Hero --- */
.hero {
  padding: var(--space-4xl) 0;
  overflow: hidden;
}

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

.hero__content {
  max-width: 560px;
}

.hero__badge {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: 1.1875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-xl);
}

.hero__actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero__code {
  flex: 1;
  min-width: 0;
}

.hero__code-block {
  background: var(--color-bg-code);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: #e2e8f0;
  box-shadow: var(--shadow-lg);
}

.hero__code-block pre {
  margin: 0;
  padding: 0 var(--space-lg) var(--space-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.hero__code-block code {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  white-space: pre;
  tab-size: 2;
}

.hero__code-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hero__code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hero__code-dot--red { background: #ef4444; }
.hero__code-dot--yellow { background: #f59e0b; }
.hero__code-dot--green { background: #10b981; }

.hero__code-title {
  font-size: 0.75rem;
  color: #94a3b8;
  margin-left: var(--space-sm);
}

/* Syntax tokens */
.token-key { color: #7dd3fc; }
.token-string { color: #86efac; }
.token-number { color: #fbbf24; }
.token-brace { color: #e2e8f0; }
.token-bracket { color: #e2e8f0; }
.token-colon { color: #94a3b8; }
.token-comma { color: #94a3b8; }
.token-null { color: #f87171; }
.token-bool { color: #c084fc; }

/* --- Trust Bar --- */
.trust-bar {
  padding: var(--space-2xl) 0;
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.trust-bar .container {
  text-align: center;
}

.trust-bar__text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.trust-bar__states {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.state-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.5rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
}

.state-badge__icon {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
}

/* --- Features --- */
.features {
  padding: var(--space-4xl) 0;
}

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

.feature-card {
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  background: var(--color-bg);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #eff6ff;
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  font-size: 1.25rem;
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* --- Data Depth --- */
.data-depth {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-subtle);
}

.data-depth__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.data-category {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
}

.data-category__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.data-category__icon {
  font-size: 1.125rem;
}

.data-category h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

.data-category__fields {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.field-pill {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
}

/* --- How It Works --- */
.how-it-works {
  padding: var(--space-4xl) 0;
}

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  counter-reset: step;
}

.step {
  text-align: center;
  counter-increment: step;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: #ffffff;
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
}

.step h3 {
  margin-bottom: var(--space-sm);
}

.step p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  max-width: 300px;
  margin: 0 auto;
}

/* --- Contact Form --- */
.contact {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-subtle);
}

.contact__card {
  background: var(--color-bg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-2xl);
  max-width: 560px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-group label .required {
  color: #ef4444;
  margin-left: 2px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #94a3b8;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-submit {
  width: 100%;
}

.form-success {
  display: none;
  text-align: center;
  padding: var(--space-2xl);
}

.form-success.active {
  display: block;
}

.form-success__icon {
  width: 56px;
  height: 56px;
  background: #dcfce7;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.form-success h3 {
  margin-bottom: var(--space-sm);
}

.form-success p {
  color: var(--color-text-secondary);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg-subtle);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand p {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--space-sm);
  max-width: 300px;
}

.footer__heading {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.075em;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

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

.footer__contact-email {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: center;
  text-align: center;
}

.footer__copyright {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.footer__powered {
  font-size: 0.75rem;
  color: #94a3b8;
}

/* ============================================================
   Responsive
   ============================================================ */

/* 640px+ — Small tablets / large phones */
@media (min-width: 640px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

/* 768px+ — Tablets */
@media (min-width: 768px) {
  h1 { font-size: 3.5rem; }

  .nav__links {
    display: flex;
  }

  .nav__cta {
    display: inline-flex;
  }

  .hamburger {
    display: none;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* 1024px+ — Desktops */
@media (min-width: 1024px) {
  h1 { font-size: 3.75rem; }

  .hero .container {
    flex-direction: row;
    align-items: center;
  }

  .hero__content {
    flex: 1;
  }

  .hero__code {
    flex: 1;
    max-width: 520px;
  }

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

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

  .contact__card {
    padding: var(--space-3xl);
  }
}