/* ========================================
   Pass My CMMC — Site Styles
   Clean, professional, trust-first design.
   ======================================== */

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

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

  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #4a4a68;
  --color-text-muted: #7a7a96;
  --color-border: #e2e2ec;
  --color-border-light: #f0f0f6;

  --color-accent: #1e3a5f;       /* Deep navy — authority, trust */
  --color-accent-light: #2a5a8f;
  --color-accent-bg: #eef3f9;
  --color-accent-border: #c8d9eb;

  --color-warn: #c44b25;         /* For "common failure" callouts */
  --color-warn-bg: #fdf3ef;
  --color-warn-border: #f0d0c0;

  --color-success: #1a7a4a;      /* For "what good looks like" */
  --color-success-bg: #eef7f2;
  --color-success-border: #bee5cd;

  --color-tip: #5a4e9a;          /* For assessor tips */
  --color-tip-bg: #f3f1fa;
  --color-tip-border: #d5cef0;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.08);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --container-width: 720px;
  --container-wide: 960px;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-size: 0.875rem;
}
.skip-link:focus { top: 1rem; }

/* --- Container --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Header --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}
.logo-icon {
  color: var(--color-accent);
  font-size: 1.2rem;
}
.site-nav {
  display: flex;
  gap: 0.25rem;
}
.nav-link {
  padding: 0.5rem 0.875rem;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover {
  color: var(--color-text);
  background: var(--color-border-light);
}
.nav-link.active {
  color: var(--color-accent);
  background: var(--color-accent-bg);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.mobile-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s;
}

@media (max-width: 640px) {
  .site-nav { display: none; }
  .mobile-menu-toggle { display: flex; }
  .site-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1rem 1rem;
    box-shadow: var(--shadow-md);
  }
}

/* --- Typography --- */
h1, h2, h3, h4 {
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.3;
}
h1 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 1.4rem; font-weight: 600; margin-top: 2.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.15rem; font-weight: 600; margin-top: 2rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; }

a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-border);
  text-underline-offset: 2px;
  transition: color 0.15s, text-decoration-color 0.15s;
}
a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

strong { font-weight: 600; }

ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
li { margin-bottom: 0.35rem; }

blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem 1rem;
  margin: 1.5rem 0;
  background: var(--color-accent-bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-border-light);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
}
pre {
  background: #1a1a2e;
  color: #e0e0e8;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.5rem 0;
  font-size: 0.85rem;
  line-height: 1.6;
}
pre code {
  background: none;
  padding: 0;
  color: inherit;
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

/* --- Page Layouts --- */
.page-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 2rem;
}
.page-header h1 { margin-bottom: 0.5rem; }
.page-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  line-height: 1.6;
}

.page-content {
  padding: 2rem 0 4rem;
}

/* --- Hero (Homepage) --- */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-tagline {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.hero-cta {
  display: inline-flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-accent-light);
  color: #fff;
  text-decoration: none;
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-accent-border);
  color: var(--color-accent);
  text-decoration: none;
}

/* --- Callout Boxes --- */
.callout {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  border-left: 4px solid;
  font-size: 0.95rem;
}
.callout p:last-child { margin-bottom: 0; }
.callout-title {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.callout-warn {
  background: var(--color-warn-bg);
  border-color: var(--color-warn);
}
.callout-warn .callout-title { color: var(--color-warn); }

.callout-success {
  background: var(--color-success-bg);
  border-color: var(--color-success);
}
.callout-success .callout-title { color: var(--color-success); }

.callout-tip {
  background: var(--color-tip-bg);
  border-color: var(--color-tip);
}
.callout-tip .callout-title { color: var(--color-tip); }

.callout-info {
  background: var(--color-accent-bg);
  border-color: var(--color-accent);
}
.callout-info .callout-title { color: var(--color-accent); }

/* --- Practice Cards (Index Page) --- */
.practice-grid {
  display: grid;
  gap: 1rem;
  margin: 2rem 0;
}
.practice-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.practice-card:hover {
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}
.practice-card-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.25rem;
}
.practice-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}
.practice-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}
.practice-card-meta {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
}
.practice-badge {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  background: var(--color-border-light);
  color: var(--color-text-muted);
}
.practice-badge.hard {
  background: var(--color-warn-bg);
  color: var(--color-warn);
}

/* --- Family Section Headers --- */
.family-section {
  margin-top: 3rem;
}
.family-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}
.family-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}
.family-name {
  font-size: 1.1rem;
  font-weight: 600;
}

/* --- Practice Page Layout --- */
.practice-header {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 2rem;
}
.practice-id {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.practice-header h1 {
  margin-bottom: 0.75rem;
}
.practice-summary {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.practice-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}
.practice-toc-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.practice-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.practice-toc li { margin-bottom: 0.25rem; }
.practice-toc a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
}
.practice-toc a:hover {
  color: var(--color-accent);
}

/* --- Assessor Q&A Blocks --- */
.assessor-qa {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}
.assessor-q {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.5rem;
}
.assessor-q::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}
.assessor-a {
  color: var(--color-text-secondary);
  padding-left: 2rem;
  font-size: 0.95rem;
}

/* --- SSP Example Blocks --- */
.ssp-example {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  overflow: hidden;
}
.ssp-example-header {
  background: var(--color-accent-bg);
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ssp-example-body {
  padding: 1.25rem;
  font-size: 0.9rem;
  line-height: 1.7;
}

/* --- Homepage Sections --- */
.home-section {
  padding: 3rem 0;
}
.home-section + .home-section {
  border-top: 1px solid var(--color-border-light);
}
.section-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.section-subtitle {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
}
.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-text);
  color: #b0b0c0;
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand {
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.footer-tagline {
  font-size: 0.9rem;
  line-height: 1.6;
}
.footer-heading {
  color: #fff;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.footer-nav a {
  color: #b0b0c0;
  text-decoration: none;
  font-size: 0.9rem;
}
.footer-nav a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  font-size: 0.8rem;
  line-height: 1.6;
}

@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 1.8rem; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .header-inner { padding: 0 1rem; }
  .container, .container-wide { padding: 0 1rem; }
}