/* Modern Minimalism with Technology/Innovation Theme */
:root {
  /* Color System */
  --color-primary: #0A2463;
  --color-primary-light: #1a3a8a;
  --color-secondary: #3E92CC;
  --color-secondary-light: #5aa6e0;
  --color-neutral-light: #FDFEFE;
  --color-neutral-dark: #17202A;
  --color-body-bg: #FFFFFF;
  --color-text: #2C3E50;
  --color-text-light: #5D6D7E;
  --color-link: #2980B9;
  --color-link-hover: #3498DB;
  
  /* Typography */
  --font-primary: 'Open Sans', sans-serif;
  --font-secondary: 'Roboto Slab', serif;
  --text-base-size: 1rem;
  --text-scale-ratio: 1.25;
  
  /* Spacing */
  --space-unit: 1rem;
  --space-xs: calc(0.25 * var(--space-unit));
  --space-sm: calc(0.5 * var(--space-unit));
  --space-md: calc(1 * var(--space-unit));
  --space-lg: calc(2 * var(--space-unit));
  --space-xl: calc(4 * var(--space-unit));
  
  /* Borders */
  --border-radius-btn: 0.25rem;
  --border-radius-card: 0.5rem;
  --border-width: 1px;
  --border-style: solid;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
  
  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
  --transition-slow: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Styles */
body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-body-bg);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--space-sm) 0;
  color: var(--color-neutral-dark);
}

h1 { font-size: calc(var(--text-base-size) * var(--text-scale-ratio) * 3); }
h2 { font-size: calc(var(--text-base-size) * var(--text-scale-ratio) * 2.25); }
h3 { font-size: calc(var(--text-base-size) * var(--text-scale-ratio) * 1.75); }
h4 { font-size: calc(var(--text-base-size) * var(--text-scale-ratio) * 1.5); }
h5 { font-size: calc(var(--text-base-size) * var(--text-scale-ratio) * 1.25); }
h6 { font-size: var(--text-base-size); }

p {
  margin: 0 0 var(--space-md) 0;
  font-size: var(--text-base-size);
}

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

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

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-btn);
  border: var(--border-width) var(--border-style) transparent;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-neutral-light);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-neutral-light);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-neutral-light);
}

/* Cards */
.card {
  background-color: var(--color-body-bg);
  border-radius: var(--border-radius-card);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: var(--transition-slow);
  border: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  padding: var(--space-md);
  border-bottom: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
}

.card-body {
  padding: var(--space-md);
}

.card-footer {
  padding: var(--space-md);
  border-top: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
}

/* Slider Component */
.slider {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: var(--transition-slow);
}

.slide {
  min-width: 100%;
  position: relative;
}

.slide-content {
  padding: var(--space-xl) var(--space-md);
}

.slider-controls {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  transform: translateY(-50%);
  z-index: 10;
}

.slider-btn {
  background-color: rgba(255,255,255,0.7);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-base);
}

.slider-btn:hover {
  background-color: var(--color-neutral-light);
}

/* Accordion Component */
.accordion {
  border: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
  border-radius: var(--border-radius-card);
  overflow: hidden;
}

.accordion-item {
  border-bottom: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
}

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

.accordion-header {
  padding: var(--space-md);
  background-color: var(--color-neutral-light);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition-base);
}

.accordion-header:hover {
  background-color: rgba(0,0,0,0.02);
}

.accordion-content {
  padding: 0 var(--space-md);
  max-height: 0;
  overflow: hidden;
  transition: var(--transition-slow);
}

.accordion-item.active .accordion-content {
  padding: var(--space-md);
  max-height: 1000px;
}

/* Tabs Component */
.tabs {
  display: flex;
  border-bottom: var(--border-width) var(--border-style) rgba(0,0,0,0.05);
}

.tab-btn {
  padding: var(--space-sm) var(--space-md);
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  font-family: var(--font-primary);
  font-weight: 600;
  color: var(--color-text-light);
  transition: var(--transition-base);
}

.tab-btn:after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: var(--transition-base);
}

.tab-btn.active {
  color: var(--color-primary);
}

.tab-btn.active:after {
  transform: scaleX(1);
}

.tab-content {
  display: none;
  padding: var(--space-md) 0;
}

.tab-content.active {
  display: block;
}

/* Header Styles */
.header {
  position: sticky;
  top: 0;
  background-color: var(--color-body-bg);
  box-shadow: var(--shadow-sm);
  z-index: 100;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
}

.header-logo img {
  height: 50px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: var(--space-md);
}

.nav-link {
  color: var(--color-text);
  font-weight: 600;
  padding: var(--space-xs) 0;
  position: relative;
}

.nav-link:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-base);
}

.nav-link:hover:after {
  width: 100%;
}

/* Footer Styles */
.footer {
  background-color: var(--color-neutral-dark);
  color: var(--color-neutral-light);
  padding: var(--space-xl) 0;
}

.footer-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  padding: 0 var(--space-md);
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-md);
}

.footer-links h4 {
  color: var(--color-neutral-light);
  margin-bottom: var(--space-sm);
}

.footer-link {
  color: var(--color-neutral-light);
  opacity: 0.8;
  display: block;
  margin-bottom: var(--space-xs);
  transition: var(--transition-base);
}

.footer-link:hover {
  opacity: 1;
  text-decoration: none;
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-icon {
  width: 24px;
  height: 24px;
  opacity: 0.8;
  transition: var(--transition-base);
}

.social-icon:hover {
  opacity: 1;
}

.copyright {
  margin-top: var(--space-xl);
  text-align: center;
  opacity: 0.6;
  font-size: 0.9rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  :root {
    --text-base-size: 0.9rem;
  }
  
  .header-container {
    flex-direction: column;
    padding: var(--space-md);
  }
  
  .nav-menu {
    margin-top: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .footer-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .slider-content {
    padding: var(--space-lg) var(--space-sm);
  }
}

/* Technology Theme Enhancements */
.tech-highlight {
  position: relative;
}

.tech-highlight:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(10,36,99,0.1) 0%, rgba(62,146,204,0.1) 100%);
  z-index: -1;
  border-radius: var(--border-radius-card);
}

.tech-border {
  border: 1px solid;
  border-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) 1;
}