/* PHP Experts — Site A — Light Monochrome */

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

:root {
  --black: #000000;
  --white: #ffffff;
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --max-width: 1100px;
  --transition: 0.2s ease;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--gray-300);
  transition: border-color var(--transition);
}

a:hover {
  border-bottom-color: var(--black);
}

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

/* Layout */

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

/* Header */

.site-header {
  border-bottom: 1px solid var(--gray-200);
  padding: 20px 0;
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.site-logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.02em;
  border-bottom: none;
}

.site-logo:hover {
  border-bottom: none;
}

.site-nav {
  display: flex;
  gap: 32px;
  list-style: none;
}

.site-nav a {
  color: var(--gray-500);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-bottom: none;
  transition: color var(--transition);
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--gray-300);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--black);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Hero */

.hero {
  padding: 100px 0 80px;
  border-bottom: 1px solid var(--gray-200);
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  color: var(--black);
  line-height: 1.05;
  letter-spacing: -0.04em;
  max-width: 700px;
}

.hero .subtitle {
  font-size: 1.25rem;
  color: var(--gray-500);
  margin-top: 24px;
  max-width: 500px;
  line-height: 1.6;
  font-weight: 400;
}

.hero-stats {
  display: flex;
  gap: 64px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--gray-200);
}

.hero-stat .number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--black);
  display: block;
  letter-spacing: -0.03em;
}

.hero-stat .label {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* Sections */

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--gray-200);
}

.section:last-child {
  border-bottom: none;
}

.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -0.03em;
}

.section-header p {
  margin-top: 12px;
  color: var(--gray-500);
  max-width: 520px;
  font-size: 1rem;
}

/* Grids */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Cards */

.card {
  border: 1px solid var(--gray-200);
  padding: 32px;
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--gray-400);
}

.card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* Steps / Process */

.steps {
  counter-reset: step;
}

.step {
  display: flex;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--gray-200);
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  counter-increment: step;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 2px solid var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: var(--black);
}

.step-number::before {
  content: counter(step);
}

.step-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* Problem cards */

.problem-card {
  border: 1px solid var(--gray-200);
  padding: 28px;
  background: var(--gray-50);
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--black);
  font-weight: 600;
}

.problem-card .fix {
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--gray-200);
  line-height: 1.6;
}

/* FAQ */

.faq-section {
  margin-top: 64px;
  border-top: 1px solid var(--gray-200);
  padding-top: 64px;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
  padding: 24px 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.faq-item p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* CTA */

.cta-section {
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--black);
  margin-bottom: 12px;
  letter-spacing: -0.03em;
}

.cta-section p {
  color: var(--gray-500);
  margin-bottom: 32px;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--black);
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--black);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: none;
}

.btn:hover {
  background: var(--white);
  color: var(--black);
  border-bottom: none;
}

/* Page header (inner pages) */

.page-header {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--gray-200);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--black);
  letter-spacing: -0.03em;
}

.page-header p {
  margin-top: 16px;
  color: var(--gray-500);
  max-width: 540px;
  font-size: 1.05rem;
}

/* Page content */

.page-content {
  max-width: 720px;
  padding: 48px 0;
}

.page-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--black);
  margin-top: 56px;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.page-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--black);
  margin-top: 36px;
  margin-bottom: 12px;
}

.page-content p {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin-bottom: 16px;
  line-height: 1.75;
}

.page-content ul,
.page-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.page-content li {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 8px;
}

.page-content code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  padding: 2px 6px;
}

/* Alert banner (vulnerability page) */

.alert-banner {
  background: var(--black);
  color: var(--white);
  padding: 14px 24px;
  text-align: center;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: relative;
  z-index: 101;
}

.alert-banner a {
  color: var(--white);
  text-decoration: none;
  display: block;
}

.alert-banner a:hover {
  text-decoration: none;
  opacity: 0.85;
}

.alert-banner .alert-critical {
  color: #ff3b3b;
  font-weight: 800;
}

.alert-banner .alert-cvss {
  opacity: 0.7;
  margin-left: 8px;
  font-weight: 500;
}

.vuln-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
}

.vuln-meta-card {
  border: 1px solid var(--gray-200);
  padding: 24px;
}

.vuln-meta-card .cve-id {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.vuln-meta-card .severity {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-600);
  margin-bottom: 12px;
}

.vuln-meta-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.patch-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.9rem;
}

.patch-table th,
.patch-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-200);
}

.patch-table th {
  font-weight: 700;
  color: var(--black);
  background: var(--gray-50);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.patch-table td {
  color: var(--gray-700);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.sources-list {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.sources-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.85rem;
}

.sources-list li:last-child {
  border-bottom: none;
}

.sources-list a {
  color: var(--gray-600);
}

.sources-list a:hover {
  color: var(--black);
}

/* Contact — Hotel Room Display */

.hotel-display {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--gray-50);
}

.hotel-display .display-header {
  padding: 48px 0 32px;
  text-align: center;
  border-bottom: 1px solid var(--gray-200);
  background: var(--white);
}

.hotel-display .display-brand {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--black);
}

.hotel-display .display-clock {
  font-size: 4rem;
  font-weight: 200;
  color: var(--black);
  letter-spacing: -0.02em;
  margin-top: 8px;
  font-variant-numeric: tabular-nums;
}

.hotel-display .display-date {
  font-size: 1rem;
  color: var(--gray-500);
  margin-top: 4px;
  font-weight: 400;
}

.hotel-display .display-body {
  flex: 1;
  padding: 48px 0;
}

.info-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.info-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 32px;
  text-align: center;
}

.info-card .info-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-400);
  margin-bottom: 12px;
}

.info-card .info-value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.5;
}

.info-card .info-value a {
  border-bottom: 1px solid var(--gray-300);
}

/* Contact form within hotel display */

.hotel-display .contact-form-wrap {
  max-width: 560px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 40px;
}

.hotel-display .contact-form-wrap h2 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--black);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.hotel-display .contact-form-wrap .form-subtitle {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 28px;
}

.contact-form label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--gray-300);
  font-family: var(--font-stack);
  font-size: 0.9rem;
  color: var(--black);
  margin-bottom: 20px;
  background: var(--white);
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--black);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.display-source {
  text-align: center;
  padding: 24px 0;
  font-size: 0.7rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  border-top: 1px solid var(--gray-200);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--gray-200);
  padding: 32px 0;
}

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

.site-footer p {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.site-footer a {
  color: var(--gray-500);
  font-size: 0.8rem;
  border-bottom: none;
}

.site-footer a:hover {
  color: var(--black);
}

/* Cookie banner */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--black);
  color: var(--white);
  padding: 20px 24px;
  z-index: 200;
  border-top: 1px solid var(--gray-700);
}

.cookie-banner__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.cookie-banner__text {
  flex: 1;
  font-size: 0.85rem;
  line-height: 1.6;
  min-width: 280px;
}

.cookie-banner__text a {
  color: var(--white);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

.cookie-banner__actions button {
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-stack);
  transition: opacity 0.2s;
}

.cookie-banner__actions button:hover {
  opacity: 0.85;
}

#cookie-accept {
  background: var(--white);
  color: var(--black);
  border: none;
}

#cookie-decline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--gray-500);
}

/* Legal pages */

.legal-content {
  max-width: 720px;
  padding: 48px 0 64px;
}

.legal-content h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 8px;
}

.legal-content .legal-meta {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-bottom: 32px;
}

.legal-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--black);
  margin-top: 40px;
  margin-bottom: 12px;
}

.legal-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-top: 24px;
  margin-bottom: 8px;
}

.legal-content p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.75;
  margin-bottom: 16px;
}

.legal-content ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-content li {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 6px;
}

.legal-content dl {
  margin-bottom: 16px;
}

.legal-content dt {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--black);
  font-family: var(--font-mono);
  margin-top: 12px;
}

.legal-content dd {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-left: 0;
  margin-top: 4px;
}

.legal-content address {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* Responsive */

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .grid-2,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .vuln-meta {
    grid-template-columns: 1fr;
  }

  .info-cards {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 24px;
    gap: 16px;
  }

  .site-nav.open {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .site-footer .container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .page-header h1 {
    font-size: 1.75rem;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .hotel-display .display-clock {
    font-size: 2.5rem;
  }

  .hotel-display .contact-form-wrap {
    padding: 24px;
  }
}