/* ========================================
   pcandtechnerd — Stylesheet
   Light blue theme, mobile-first responsive
   ======================================== */

:root {
  /* Color Palette - Light Blue Theme */
  --color-primary: #4a90e2;        /* Medium blue */
  --color-primary-light: #67a3e8;  /* Lighter blue */
  --color-primary-dark: #3a7bc8;   /* Darker blue */
  --color-accent: #00bcd4;         /* Cyan accent */
  --color-bg: #f0f7fc;             /* Very light blue background */
  --color-bg-secondary: #e8f4f8;   /* Slightly more saturated light blue */
  --color-text: #1a3a52;           /* Dark blue-grey text */
  --color-text-secondary: #556b7f; /* Medium blue-grey text */
  --color-border: #d0e8f2;         /* Light blue border */
  --color-white: #ffffff;
  --color-shadow: rgba(74, 144, 226, 0.1);
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Layout */
  --max-width: 1080px;
  --radius: 10px;
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-dark);
}

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

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px var(--color-shadow);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* ========================================
   CONTAINERS & LAYOUT
   ======================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

main {
  min-height: calc(100vh - 200px);
}

section {
  padding: var(--spacing-3xl) 0;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */

.header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.nav-brand:hover {
  opacity: 0.8;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.brand-name {
  display: none;
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-links a {
  font-weight: 500;
  font-size: var(--font-size-sm);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--color-primary-dark);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
  padding: var(--spacing-3xl) 0;
}

.hero-content {
  text-align: center;
}

.avatar-large {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: var(--spacing-lg);
  border: 4px solid var(--color-primary-light);
  box-shadow: 0 8px 24px var(--color-shadow);
}

.hero h1 {
  margin-bottom: var(--spacing-sm);
}

.tagline {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  font-weight: 600;
}

.bio {
  margin: var(--spacing-2xl) 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.bio p {
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-base);
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

/* ========================================
   VIDEOS SECTION
   ======================================== */

.videos-section {
  background-color: var(--color-white);
}

.featured-video {
  margin-bottom: var(--spacing-3xl);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px var(--color-shadow);
  max-width: 100%;
}

.yt-iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.videos-grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.video-card {
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--color-bg);
  transition: var(--transition);
}

.video-card:hover {
  box-shadow: 0 8px 20px var(--color-shadow);
  transform: translateY(-4px);
}

.video-card a {
  display: block;
  color: inherit;
  text-decoration: none;
}

.video-thumb {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.video-card h4 {
  margin-top: var(--spacing-md);
  padding: 0 var(--spacing-md);
}

.video-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  padding: 0 var(--spacing-md) var(--spacing-md);
  margin: 0;
}

.section-cta {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

/* ========================================
   PROJECTS SECTION
   ======================================== */

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

.projects-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.project-card {
  background-color: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 12px var(--color-shadow);
  transition: var(--transition);
}

.project-card:hover {
  box-shadow: 0 8px 24px var(--color-shadow);
  transform: translateY(-4px);
}

.project-image {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.project-content {
  padding: var(--spacing-lg);
}

.project-content h3 {
  margin-bottom: var(--spacing-md);
}

.project-content p {
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-base);
}

.link-arrow {
  font-weight: 600;
  color: var(--color-primary);
  display: inline-block;
  transition: var(--transition);
}

.link-arrow:hover {
  transform: translateX(4px);
}

/* ========================================
   SPONSORS SECTION
   ======================================== */

.sponsors-section {
  background-color: var(--color-white);
}

.sponsors-section h1,
.sponsors-section h2 {
  text-align: left;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.sponsors-content {
  max-width: 700px;
  margin: 0 auto;
}

.intro-text {
  font-size: var(--font-size-lg);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.sponsors-section h3 {
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.sponsorship-list {
  list-style: none;
  margin-bottom: var(--spacing-2xl);
}

.sponsorship-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-secondary);
}

.sponsorship-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

.sponsors-section p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.sponsors-cta {
  text-align: center;
  padding: var(--spacing-2xl);
  background-color: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  margin-top: var(--spacing-2xl);
}

.sponsors-cta p {
  margin-bottom: var(--spacing-lg);
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact-section {
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.contact-section h1 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.contact-content {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.contact-content > p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-grid {
  display: grid;
  gap: var(--spacing-lg);
}

.contact-card {
  display: block;
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: var(--transition);
  border: 2px solid transparent;
  box-shadow: 0 4px 12px var(--color-shadow);
}

.contact-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px var(--color-shadow);
  transform: translateY(-4px);
}

.contact-icon {
  font-size: var(--font-size-2xl);
  display: block;
  margin-bottom: var(--spacing-md);
}

.contact-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.contact-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ========================================
   OTHER SITES SECTION
   ======================================== */

.other-sites-section {
  background-color: var(--color-white);
}

.other-sites-section h1 {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.other-sites-content {
  max-width: 900px;
  margin: 0 auto;
}

.intro-text {
  font-size: var(--font-size-lg);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.sites-grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.site-card {
  background-color: var(--color-bg);
  border-radius: var(--radius);
  padding: var(--spacing-xl);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.site-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px var(--color-shadow);
  border-color: var(--color-primary);
}

.site-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-lg);
  display: block;
}

.site-card h2 {
  text-align: left;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
  font-size: var(--font-size-xl);
}

.site-card p {
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.site-details {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius);
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.site-details p {
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.server-address {
  display: block;
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius);
  font-family: 'Courier New', monospace;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  margin-top: var(--spacing-md);
  word-break: break-all;
  user-select: all;
}

.site-card .btn {
  width: 100%;
  text-align: center;
  display: inline-block;
}

/* ========================================
   CONTACT EMAILS SECTION
   ======================================== */

.contact-emails-grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.email-card {
  background-color: var(--color-bg);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.email-card:hover {
  box-shadow: 0 4px 12px var(--color-shadow);
  border-color: var(--color-primary);
}

.email-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.email-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.email-link {
  display: inline-block;
  background-color: var(--color-white);
  color: var(--color-primary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius);
  border: 2px solid var(--color-primary);
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
  word-break: break-all;
}

.email-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
   RESPONSIVE - EMAIL GRID
   ======================================== */

@media (min-width: 880px) {
  .contact-emails-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .contact-emails-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 880px) {
  .sites-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .sites-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.footer {
  background-color: var(--color-text);
  color: var(--color-white);
  padding-top: var(--spacing-3xl);
  padding-bottom: var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: grid;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-lg);
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  margin-bottom: 0;
}

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

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  transition: var(--transition);
}

.footer-section a:hover {
  color: var(--color-primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--spacing-sm);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: underline;
}

.footer-bottom a:hover {
  color: var(--color-primary-light);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet (880px and up) */
@media (min-width: 880px) {
  .brand-name {
    display: inline;
  }

  .nav-links {
    display: flex;
  }

  .header .btn {
    display: inline-block;
  }

  .videos-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

  .hero-cta {
    flex-direction: row;
    gap: var(--spacing-lg);
  }

  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }

  h1 {
    font-size: 56px;
  }

  h2 {
    font-size: 40px;
  }

  section {
    padding: var(--spacing-3xl) 0;
  }
}

/* Desktop (1200px and up) */
@media (min-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ========================================
   ACCESSIBILITY & PRINT
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .header,
  .hero-cta,
  .section-cta,
  .footer,
  .btn {
    display: none;
  }

  body {
    background: white;
  }

  section {
    page-break-inside: avoid;
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.skip-to-main {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-md);
  text-decoration: none;
  border-radius: var(--radius);
  z-index: 100;
}

.skip-to-main:focus {
  top: 0;
}