/*
Theme Name: AI SaaS Accessible
Theme URI: https://example.com/ai-saas-accessible
Author: OpenAI
Author URI: https://example.com
Description: Accessible WordPress theme for SaaS and AI services, designed to meet WCAG 2.1 AA requirements.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
Text Domain: ai-saas-accessible
Tags: accessibility-ready, custom-menu, featured-images, responsive-layout
*/

:root {
  --color-primary: #1b6ef3;
  --color-primary-dark: #0f4fc5;
  --color-secondary: #0b1b3a;
  --color-accent: #00c4b4;
  --color-surface: #f5f7fb;
  --color-text: #0b1b3a;
  --color-muted: #4e5a6b;
  --color-border: #d6dde8;
  --shadow-sm: 0 8px 24px rgba(11, 27, 58, 0.12);
  --radius-md: 16px;
  --radius-sm: 10px;
  --max-width: 1200px;
  --font-base: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: #ffffff;
  line-height: 1.6;
}

a {
  color: var(--color-primary);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: absolute;
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 12px 16px;
  background: #ffffff;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-secondary);
}

.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 700;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.primary-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 16px;
}

.primary-nav a {
  text-decoration: none;
  color: var(--color-secondary);
  font-weight: 600;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--color-primary);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 999px;
  padding: 12px 22px;
  text-decoration: none;
  font-weight: 600;
}

.cta-button.secondary {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.hero {
  background: linear-gradient(135deg, #f8fbff 0%, #eef3ff 100%);
  padding: 80px 24px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
  align-items: center;
}

.hero-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 32px;
}

.hero-meta {
  color: var(--color-muted);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.section {
  padding: 72px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 16px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.feature-card {
  background: #ffffff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 24px;
}

.feature-card h3 {
  margin-top: 0;
}

.pricing {
  background: var(--color-surface);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.pricing-card {
  background: #ffffff;
  padding: 28px;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
}

.pricing-card.highlight {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.site-footer {
  background: var(--color-secondary);
  color: #ffffff;
  padding: 48px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}

.footer-inner a {
  color: #ffffff;
}

.content-area {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
}

.entry-title {
  margin-top: 0;
}

@media (max-width: 768px) {
  .primary-nav ul {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}