/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-text: #ffffff;
  --color-text-light: #e0e0e0;
  --color-bg: #3d3d3d;
  --color-bg-dark: #2d2d2d;
  --color-header-bg: #000000;
  --color-border: #555555;
  --color-link: #4a9eff;
  --color-link-hover: #6bb3ff;
  --color-focus: #4a9eff;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --line-height-base: 1.2;
  --max-width: 800px;
}

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

body {
  font-family: var(--font-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000000;
  color: #ffffff;
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
  color: #ffffff;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

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

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

a:hover,
a:focus {
  color: var(--color-link-hover);
  text-decoration: underline;
}

a:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Layout */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-sm);
  background-color: var(--color-header-bg);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.site-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: #ffffff;
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-sm);
}

footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) var(--spacing-sm);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
  margin-top: var(--spacing-xl);
  background-color: var(--color-bg-dark);
}

/* Profile Sections */
.profile-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-border);
  background-color: var(--color-bg-dark);
  padding: var(--spacing-lg);
  border-radius: 8px;
  margin-top: var(--spacing-md);
}

.profile-photo {
  margin-bottom: var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-image {
  width: 400px;
  height: 400px;
  object-fit: contain;
  border-radius: 8px;
  border: 2px solid var(--color-border);
  background-color: var(--color-bg);
  padding: var(--spacing-xs);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.profile-photo a {
  display: inline-block;
}

.profile-photo a:hover .profile-image {
  transform: scale(1.05);
  opacity: 0.9;
}

.p-name {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.p-job-title {
  font-size: 1.25rem;
  color: var(--color-text-light);
  font-weight: 400;
}

.vision,
.mission {
  margin-bottom: var(--spacing-lg);
}

.vision-text,
.mission-text {
  font-size: 1.125rem;
  line-height: 1.3;
  margin-left: var(--spacing-lg);
}

/* Contact Section */
.contact {
  margin-bottom: var(--spacing-lg);
}

.contact-list {
  margin-bottom: var(--spacing-lg);
  margin-left: var(--spacing-lg);
}

.contact-item {
  margin-bottom: var(--spacing-md);
}

.contact-item strong {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

.contact-value {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.phone-note {
  display: block;
  font-size: 1rem;
  color: var(--color-text-light);
  margin-top: 0;
  line-height: 1.2;
}

.phone-note a {
  color: var(--color-text-light);
  text-decoration: none;
}

.phone-note a:hover,
.phone-note a:focus {
  color: var(--color-link);
  text-decoration: underline;
}

/* Education */
.education {
  margin-bottom: var(--spacing-lg);
}

/* Certifications */
.cert-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.cert-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-bg-dark);
}

@media (max-width: 767px) {
  .profile-image {
    width: 300px;
    height: 300px;
  }
  
  .cert-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .cert-badge {
    width: 120px;
    height: 120px;
  }
}

.cert-badge {
  flex-shrink: 0;
  width: 150px;
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border-radius: 4px;
  position: relative;
  border: none;
  overflow: hidden;
}

.cert-badge a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: var(--spacing-xs);
}

.cert-image {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
  border-radius: 4px;
  display: block;
  margin: 0 auto;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.cert-badge a:hover .cert-image {
  transform: scale(1.1);
  opacity: 0.9;
}

.cert-image:not([src]),
.cert-image[src=""] {
  display: none;
}

.cert-placeholder-text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
  padding: var(--spacing-sm);
  line-height: 1.4;
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  z-index: 1;
}

.cert-badge:has(.cert-image[src]:not([src=""])) .cert-placeholder-text,
.cert-badge .cert-image[src]:not([src=""]) ~ .cert-placeholder-text {
  display: none;
}

.cert-badge .cert-image[src]:not([src=""]) ~ .cert-placeholder-text {
  display: none;
}

.cert-placeholder-text small {
  display: block;
  font-size: 0.75rem;
  color: #999;
  margin-top: 0.25rem;
}

.cert-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.cert-info strong {
  display: block;
  font-size: 1.125rem;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.cert-info span {
  color: var(--color-text-light);
  font-size: 0.9375rem;
}

/* Standards */
.standards {
  margin-bottom: var(--spacing-lg);
}

.standards-list {
  margin-bottom: var(--spacing-lg);
  margin-left: var(--spacing-lg);
}

.standards-item {
  margin-bottom: var(--spacing-md);
}

.standards-item strong {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
  font-size: 1rem;
}

.standards-item strong a {
  color: var(--color-text);
  text-decoration: none;
}

.standards-item strong a:hover,
.standards-item strong a:focus {
  color: var(--color-link);
  text-decoration: underline;
}

.standards-value {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  line-height: 1.2;
}

/* Responsive Design - Tablet */
@media (min-width: 768px) {
  html {
    font-size: 18px;
  }
  
  header,
  main,
  footer {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
  
  .p-name {
    font-size: 3rem;
  }
  
  .contact-list {
    margin-left: var(--spacing-xl);
  }
  
  .contact-value {
    margin-left: var(--spacing-xl);
  }
  
  .standards-list {
    margin-left: var(--spacing-xl);
  }
  
  .standards-value {
    margin-left: var(--spacing-xl);
  }
  
  .vision-text,
  .mission-text {
    margin-left: var(--spacing-xl);
  }
  
  .profile-image {
    width: 440px;
    height: 440px;
  }
  
  .cert-badge {
    width: 180px;
    height: 180px;
  }
}

/* Responsive Design - Desktop */
@media (min-width: 1024px) {
  main {
    padding: var(--spacing-xl) var(--spacing-lg);
  }
  
  .profile-header {
    margin-bottom: var(--spacing-xl);
  }
  
  .p-name {
    font-size: 3.5rem;
  }
  
  .profile-image {
    width: 500px;
    height: 500px;
  }
  
  .cert-badge {
    width: 200px;
    height: 200px;
  }
}

/* Print Styles */
@media print {
  header,
  footer {
    display: none;
  }
  
  main {
    max-width: 100%;
    padding: 0;
  }
  
  a {
    color: var(--color-text);
    text-decoration: underline;
  }
  
  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 0.875rem;
    color: var(--color-text-light);
  }
}