/**
* Portfolio Details - Red Hat Enterprise Design System
* Based on PatternFly design principles
*/

/* ========================================
   DESIGN TOKENS (Red Hat Style)
======================================== */
:root {
  /* Colors - Sidebar Dark Theme */
  --primary-color: #149ddd;
  --primary-dark: #0d7dbb;
  --rh-dark: #040b14;
  --rh-dark-light: #212431;
  --rh-gray-dark: #3C3F42;
  --rh-gray: #6A6E73;
  --rh-gray-light: #a8a9b4;
  --rh-gray-lighter: #FAFAFA;
  --rh-white: #FFFFFF;
  
  /* Typography */
  --font-family: 'Red Hat Display', 'Overpass', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-sm: 14px;
  --line-height-base: 1.5;
  
  /* Spacing - 8px grid */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  /* Layout */
  --border-radius: 3px;
  --border-width: 1px;
  --border-color: var(--rh-gray-light);
  --box-shadow: 0 2px 4px 0 rgba(3, 3, 3, 0.12);
}

/* ========================================
   BASE STYLES
======================================== */
.pd-page {
  font-family: var(--font-family);
  background-color: var(--rh-gray-lighter);
  color: var(--rh-dark);
  line-height: var(--line-height-base);
  font-size: var(--font-size-base);
}

/* ========================================
   SIDEBAR
======================================== */
.pd-sidebar {
  width: 300px;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  background: var(--rh-dark);
  overflow-y: auto;
  transition: all 0.3s ease;
  z-index: 997;
  padding: 0 var(--spacing-md);
  scrollbar-width: none;
}

.pd-sidebar::-webkit-scrollbar {
  display: none;
}

.pd-sidebar-toggle {
  position: fixed;
  right: var(--spacing-md);
  top: var(--spacing-md);
  z-index: 998;
  border: 0;
  background: var(--primary-color);
  color: var(--rh-white);
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.pd-profile-image {
  margin: var(--spacing-lg) auto var(--spacing-md);
  display: block;
  width: 120px;
  height: 120px;
}

.pd-profile-image img {
  width: 100%;
  height: 100%;
  border: 4px solid var(--rh-gray-dark);
  border-radius: 50%;
  object-fit: cover;
}

.pd-site-title {
  font-size: 24px;
  margin: 0 0 var(--spacing-xs);
  padding: 0;
  font-weight: 600;
  color: var(--rh-white);
  text-align: center;
  text-decoration: none;
  display: block;
}

.pd-site-title:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.pd-tagline {
  text-align: center;
  color: var(--rh-gray);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--spacing-md);
}

.pd-social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.pd-social-links a {
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--rh-gray-dark);
  color: var(--rh-white);
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius);
  transition: background 0.2s ease;
  text-decoration: none;
}

.pd-social-links a:hover {
  background: var(--primary-color);
}

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

.pd-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pd-nav ul li {
  margin-bottom: var(--spacing-xs);
}

.pd-nav ul li a {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm);
  color: var(--rh-gray-light);
  transition: all 0.2s ease;
  font-size: 15px;
  text-decoration: none;
  border-radius: var(--border-radius);
}

.pd-nav ul li a i {
  font-size: 20px;
  margin-right: var(--spacing-sm);
  color: var(--rh-gray);
}

.pd-nav ul li a:hover,
.pd-nav ul li a.pd-nav-active {
  color: var(--rh-white);
  background: var(--rh-gray-dark);
}

.pd-nav ul li a:hover i,
.pd-nav ul li a.pd-nav-active i {
  color: var(--primary-color);
}

/* ========================================
   MAIN CONTENT
======================================== */
.pd-main-content {
  margin-left: 300px;
  transition: margin-left 0.3s ease;
}

/* ========================================
   PARTICLES BACKGROUND
======================================== */
.pd-particles-bg {
  position: fixed;
  top: 0;
  left: 300px;
  right: 0;
  bottom: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.3;
}

@media (max-width: 1199px) {
  .pd-particles-bg {
    left: 0;
  }
}

/* ========================================
   SECTIONS
======================================== */
.pd-section {
  padding: 60px 0;
  position: relative;
  z-index: 1;
}

.pd-section-light {
  background: var(--rh-white);
}

.pd-section-gray {
  background: var(--rh-gray-lighter);
}

.pd-section-title {
  text-align: center;
  margin-bottom: 40px;
}

.pd-section-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: var(--primary-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pd-section-icon i {
  width: 24px;
  height: 24px;
  color: var(--rh-white);
  stroke-width: 2;
}

.pd-section-title h2 {
  font-size: 32px;
  font-weight: 400;
  color: var(--rh-dark);
  margin: 0 0 8px 0;
  letter-spacing: -0.8px;
}

.pd-section-subtitle {
  font-size: 15px;
  color: #888;
  margin: 0;
  font-weight: 400;
  letter-spacing: 0;
}

/* ========================================
   CREDENTIALS SECTION - Clean Modern Layout
======================================== */
.pd-content-box {
  background: var(--rh-white);
  padding: 16px 0;
  border: var(--border-width) solid #E5E5E5;
  border-radius: 8px;
  max-width: 980px;
  margin: 0 auto;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.pd-credentials-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pd-credentials-list li {
  padding: 20px 32px;
  border-bottom: var(--border-width) solid #F0F0F0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  transition: background 0.15s ease;
}

.pd-credentials-list li:hover {
  background: #FAFAFA;
}

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

.pd-credentials-list li strong {
  color: var(--rh-dark);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: -0.3px;
  line-height: 1.5;
  flex: 1 1 auto;
  min-width: 0;
  word-break: break-word;
}

.pd-credential-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  text-align: right;
  flex-shrink: 0;
}

.pd-credential-info a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 400;
  font-size: 15px;
  transition: color 0.15s ease;
  white-space: nowrap;
}

.pd-credential-info a:hover {
  color: var(--primary-dark);
}

.pd-issuer {
  color: #999;
  font-weight: 400;
  font-size: 13px;
  font-style: italic;
  white-space: nowrap;
}

/* ========================================
   LEARNING JOURNEY - Modern Quote Cards with Icons
======================================== */
.pd-quotes-container {
  max-width: 1100px;
  margin: 0 auto;
}

.pd-quote-item {
  background: var(--rh-white);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 4px 12px 0 rgba(3, 3, 3, 0.08);
  border-radius: 8px;
  border: var(--border-width) solid var(--border-color);
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.pd-quote-item:hover {
  border-color: var(--primary-color);
  box-shadow: 0 8px 20px 0 rgba(20, 157, 221, 0.15);
  transform: translateX(8px);
}

.pd-quote-item:last-child {
  margin-bottom: 0;
}

.pd-quote-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background: var(--primary-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(20, 157, 221, 0.2);
  transition: all 0.2s ease;
}

.pd-quote-item:hover .pd-quote-icon {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(20, 157, 221, 0.3);
}

.pd-quote-icon i {
  width: 28px;
  height: 28px;
  color: var(--rh-white);
  stroke-width: 2.5;
}

.pd-quote-item::before {
  content: """;
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: 120px;
  font-family: Georgia, serif;
  color: var(--primary-color);
  opacity: 0.05;
  font-weight: bold;
  line-height: 0.8;
  z-index: 0;
}

.pd-quote-item p {
  font-style: normal;
  color: var(--rh-dark);
  margin: 0;
  line-height: 1.8;
  font-size: 17px;
  font-weight: 400;
  position: relative;
  z-index: 1;
  flex: 1;
}

/* ========================================
   SKILLS SECTION - Red Hat Enterprise Table Style
======================================== */
.pd-skills-container {
  max-width: 1100px;
  margin: 0 auto;
}

.pd-skills-table {
  background: var(--rh-white);
  border: var(--border-width) solid #E5E5E5;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.pd-skill-category {
  border-bottom: var(--border-width) solid #F0F0F0;
  transition: background 0.15s ease;
}

.pd-skill-category:last-child {
  border-bottom: none;
}

.pd-skill-category:hover {
  background: #FAFAFA;
}

.pd-skill-header {
  display: flex;
  align-items: center;
  padding: 24px 32px;
  gap: 20px;
  cursor: pointer;
  user-select: none;
}

.pd-skill-header-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pd-skill-header-icon i {
  width: 20px;
  height: 20px;
  color: var(--rh-white);
  stroke-width: 2.5;
}

.pd-skill-header-content {
  flex: 1;
}

.pd-skill-header-content h3 {
  font-size: 18px;
  font-weight: 500;
  color: var(--rh-dark);
  margin: 0 0 4px 0;
  letter-spacing: -0.3px;
}

.pd-skill-count {
  font-size: 13px;
  color: var(--rh-gray);
  font-weight: 400;
}

.pd-skill-toggle {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--rh-gray);
  transition: transform 0.2s ease;
}

.pd-skill-category.pd-expanded .pd-skill-toggle {
  transform: rotate(180deg);
}

.pd-skill-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.pd-skill-category.pd-expanded .pd-skill-body {
  max-height: 500px;
}

.pd-skill-items {
  padding: 8px 32px 24px 92px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 32px;
}

.pd-skill-item {
  font-size: 15px;
  color: var(--rh-gray-dark);
  padding: 8px 0;
  position: relative;
  padding-left: 16px;
  line-height: 1.4;
}

.pd-skill-item::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
  font-size: 18px;
}

/* Responsive */
@media (max-width: 768px) {
  .pd-skill-header {
    padding: 20px 24px;
    gap: 16px;
  }

  .pd-skill-header-icon {
    width: 36px;
    height: 36px;
  }

  .pd-skill-header-content h3 {
    font-size: 16px;
  }

  .pd-skill-items {
    padding: 8px 24px 20px 76px;
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 576px) {
  .pd-skill-header {
    padding: 16px 20px;
  }

  .pd-skill-items {
    padding: 8px 20px 16px 20px;
  }
}

/* ========================================
   FOOTER - Compact & Minimal
======================================== */
.pd-footer {
  background: var(--rh-dark);
  color: var(--rh-gray-light);
  padding: 24px 0 16px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.pd-footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.pd-footer-title {
  font-size: 18px;
  font-weight: 500;
  margin: 0;
  color: var(--rh-white);
}

.pd-footer-social {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.pd-footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--rh-white);
  border-radius: 4px;
  transition: all 0.2s ease;
  text-decoration: none;
  font-size: 16px;
}

.pd-footer-social a:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}

.pd-footer-copyright {
  color: var(--rh-gray);
  font-size: 13px;
  margin: 0;
}

.pd-footer-copyright strong {
  color: var(--primary-color);
  font-weight: 500;
}

/* ========================================
   SCROLL TO TOP
======================================== */
.pd-scroll-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: var(--spacing-md);
  bottom: var(--spacing-md);
  z-index: 996;
  background: var(--primary-color);
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: var(--box-shadow);
}

.pd-scroll-top i {
  font-size: 24px;
  color: var(--rh-white);
}

.pd-scroll-top:hover {
  background: var(--rh-dark);
}

.pd-scroll-top.pd-active {
  visibility: visible;
  opacity: 1;
}

/* ========================================
   PRELOADER
======================================== */
.pd-preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  overflow: hidden;
  background: var(--rh-white);
  transition: opacity 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pd-preloader::before {
  content: "";
  width: 48px;
  height: 48px;
  border: 4px solid var(--rh-gray-light);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: pd-spin 1s linear infinite;
}

@keyframes pd-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   OVERLAY & MOBILE
======================================== */
.pd-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 996;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.pd-overlay.pd-active {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1199px) {
  .pd-sidebar {
    left: -300px;
  }

  .pd-sidebar.pd-sidebar-open {
    left: 0;
  }

  .pd-sidebar-toggle {
    display: flex;
  }

  .pd-main-content {
    margin-left: 0;
  }

  .pd-skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pd-section {
    padding: 50px 0;
  }

  .pd-section-title h2 {
    font-size: 28px;
  }

  .pd-content-box {
    padding: 12px 0;
    border-radius: 6px;
  }

  .pd-credentials-list li {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 20px;
    text-align: center;
  }

  .pd-credentials-list li strong {
    font-size: 15px;
    width: 100%;
    font-weight: 500;
  }

  .pd-credential-info {
    width: 100%;
    align-items: center;
    text-align: center;
    gap: 8px;
  }

  .pd-credential-info a {
    white-space: normal;
    font-size: 15px;
    font-weight: 500;
  }

  .pd-issuer {
    white-space: normal;
    font-size: 13px;
  }

  .pd-quote-item {
    flex-direction: column;
    padding: 24px;
  }

  .pd-quote-icon {
    width: 48px;
    height: 48px;
  }

  .pd-quote-icon i {
    width: 24px;
    height: 24px;
  }

  .pd-quote-item p {
    font-size: 15px;
  }
}

@media (max-width: 576px) {
  .pd-section {
    padding: 40px 0;
  }

  .pd-section-title h2 {
    font-size: 24px;
  }

  .pd-section-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 12px;
  }

  .pd-section-icon i {
    width: 20px;
    height: 20px;
  }

  .pd-sidebar {
    width: 280px;
    left: -280px;
  }

  .pd-credentials-list li {
    padding: 20px 16px;
  }

  .pd-credentials-list li strong {
    font-size: 14px;
    font-weight: 400;
  }

  .pd-credential-info a {
    font-size: 14px;
  }

  .pd-issuer {
    font-size: 12px;
  }

  .pd-quote-item {
    padding: 20px;
  }

  .pd-quote-item p {
    font-size: 14px;
  }
}