/* ===================================================
   BrandShieldMail — Global Stylesheet
   Infrastructure-grade, minimal, trust-focused design
   =================================================== */

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

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f8fa;
  --color-bg-dark: #f0f2f5;
  --color-text: #2c2c2c;
  --color-text-muted: #555555;
  --color-text-light: #777777;
  --color-accent: #1a5276;
  --color-accent-light: #2471a3;
  --color-border: #dfe1e5;
  --color-border-light: #e8eaed;
  --color-card-bg: #ffffff;
  --color-success: #1e8449;
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Consolas", "Liberation Mono", "Menlo", monospace;
  --max-width: 920px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.75rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --radius: 3px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* =====================
   HEADER
   ===================== */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0.875rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.site-logo {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.site-logo span {
  color: var(--color-text);
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.75rem;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  margin: 4px 0;
  transition: transform 0.2s ease;
}

/* =====================
   HERO
   ===================== */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero h1 {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.hero .subtitle {
  font-size: 0.975rem;
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto var(--spacing-md);
  line-height: 1.72;
}

.hero .supporting-text {
  font-size: 0.85rem;
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border-light);
}

/* =====================
   SECTIONS
   ===================== */
.section {
  padding: var(--spacing-xl) 0;
}

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

.section--bordered {
  border-top: 1px solid var(--color-border-light);
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  text-align: center;
  letter-spacing: -0.01em;
}

.section-content {
  max-width: 680px;
  margin: 0 auto;
  font-size: 0.925rem;
  color: var(--color-text-muted);
}

.section-content p {
  margin-bottom: var(--spacing-sm);
}

.section-content p:last-child {
  margin-bottom: 0;
}

.section-content strong {
  color: var(--color-text);
  font-weight: 600;
}

/* =====================
   FEATURE CARDS
   ===================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  max-width: 760px;
  margin: 0 auto;
}

.feature-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.feature-card .card-icon {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent-light);
  margin-bottom: 0.5rem;
  display: block;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.feature-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =====================
   COMPLIANCE LIST
   ===================== */
.compliance-list {
  list-style: none;
  max-width: 600px;
  margin: var(--spacing-md) auto 0;
  padding: 0;
}

.compliance-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.compliance-list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
  font-size: 0.8rem;
}

/* =====================
   STATUS BLOCK
   ===================== */
.status-block {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.625rem 1.125rem;
  margin-top: var(--spacing-md);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  flex-shrink: 0;
}

.status-text {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-text);
}

.status-date {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-left: 0.35rem;
}

/* =====================
   NOTICE BOX
   ===================== */
.notice-box {
  background-color: var(--color-bg-alt);
  border-left: 3px solid var(--color-accent-light);
  padding: var(--spacing-sm) 1.5rem;
  margin-top: var(--spacing-md);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.notice-box p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.notice-box p:last-child {
  margin-bottom: 0;
}

/* =====================
   PROTOCOL BLOCKS
   ===================== */
.protocol-block {
  max-width: 680px;
  margin: 0 auto var(--spacing-md);
  padding: 1.25rem 1.5rem;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.protocol-block h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.protocol-block .protocol-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-bottom: 0.35rem;
  display: block;
}

.protocol-block p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* =====================
   REPORTING STEPS
   ===================== */
.reporting-section {
  max-width: 680px;
  margin: 0 auto;
}

.reporting-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  margin-top: var(--spacing-md);
}

.reporting-section h3:first-child {
  margin-top: 0;
}

.reporting-section p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.reporting-section ul {
  list-style: none;
  padding: 0;
  margin-bottom: var(--spacing-sm);
}

.reporting-section ul li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.reporting-section ul li::before {
  content: "\2022";
  position: absolute;
  left: 0;
  color: var(--color-accent-light);
  font-weight: 700;
}

.response-timeframe {
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-top: var(--spacing-sm);
}

.response-timeframe p {
  font-size: 0.825rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.response-timeframe strong {
  color: var(--color-text);
}

/* =====================
   CONTACT INFO
   ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 680px;
  margin: var(--spacing-md) auto 0;
}

.contact-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.contact-card h4 {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.contact-card a {
  font-size: 0.825rem;
  display: block;
  line-height: 1.8;
}

/* =====================
   FOOTER
   ===================== */
.site-footer {
  background-color: #1b1d21;
  color: #b0b0b0;
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #e0e0e0;
  margin-bottom: 0.75rem;
}

.footer-section p,
.footer-section a {
  font-size: 0.775rem;
  color: #999999;
  line-height: 1.9;
}

.footer-section a:hover {
  color: #ffffff;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.2rem;
}

.footer-bottom {
  border-top: 1px solid #2e3035;
  padding-top: var(--spacing-md);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.7rem;
  color: #777777;
  margin-bottom: 0.4rem;
}

.footer-disclaimer {
  font-size: 0.65rem;
  color: #5a5a5a;
  max-width: 600px;
  margin: var(--spacing-sm) auto 0;
  line-height: 1.65;
}

/* =====================
   LEGAL PAGES
   ===================== */
.legal-page {
  padding: var(--spacing-xl) 0;
  min-height: calc(100vh - 180px);
}

.legal-page h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.01em;
}

.legal-page h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--spacing-md);
  margin-bottom: 0.75rem;
}

.legal-page p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.legal-page ul {
  padding-left: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.legal-page ul li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.legal-page .last-updated {
  font-size: 0.775rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .site-nav.active {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero h1 {
    font-size: 1.4rem;
  }

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

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--spacing-lg) 0;
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }
}