:root {
  /* Primary Colors - Dunkles Lila Theme */
  --primary-color: #8b5fbf;
  --primary-dark: #6b46a3;
  --primary-light: #a876d4;
  --primary-gradient: linear-gradient(135deg, #8b5fbf 0%, #6b46a3 100%);

  /* Background Colors */
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #252541;
  --bg-card: #1e1e3a;
  --bg-code: #161629;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #b8b8cc;
  --text-muted: #8a8a9e;
  --text-accent: #c4a7ff;

  /* Border Colors */
  --border-color: #2a2a4a;
  --border-light: #3a3a5a;

  /* Status Colors */
  --success-color: #4caf50;
  --warning-color: #ff9800;
  --error-color: #f44336;
  --info-color: #2196f3;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(139, 95, 191, 0.1);
  --shadow-md: 0 4px 16px rgba(139, 95, 191, 0.15);
  --shadow-lg: 0 8px 32px rgba(139, 95, 191, 0.2);
  --shadow-xl: 0 16px 64px rgba(139, 95, 191, 0.25);

  /* Typography */
  --font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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

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

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 15, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: var(--spacing-md) 0;
}

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

.nav-brand .brand-link {
  display: flex;
  align-items: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.brand-icon {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-right: var(--spacing-sm);
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: var(--bg-card);
}

/* Employee Dropdown Menu */
.employee-menu {
  position: relative;
}

.nav-dropdown {
  position: relative;
}

.dropdown-toggle {
  cursor: pointer;
  user-select: none;
}

.dropdown-toggle i:last-child {
  transition: transform var(--transition-fast);
  margin-left: var(--spacing-xs);
}

.nav-dropdown:hover .dropdown-toggle i:last-child {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 200px;
  padding: var(--spacing-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.dropdown-item:hover {
  background: var(--bg-secondary);
  color: var(--primary-color);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-sm) 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition-normal);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-light);
}

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

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: var(--font-size-lg);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(139, 95, 191, 0.1) 0%, transparent 70%);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(15, 15, 26, 0.8) 0%, rgba(26, 26, 46, 0.6) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.highlight {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
}

/* Projects Section */
.projects-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.project-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-gradient);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
}

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

.project-description {
  margin-bottom: var(--spacing-lg);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--primary-color);
  font-weight: 500;
  transition: var(--transition-fast);
}

.project-link:hover {
  color: var(--primary-light);
  gap: var(--spacing-sm);
}

/* Features Section */
.features-section {
  padding: var(--spacing-3xl) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-xl);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 95, 191, 0.1);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
  color: var(--primary-color);
}

.feature-title {
  margin-bottom: var(--spacing-md);
}

.feature-description {
  color: var(--text-muted);
}

/* Stats Section */
.stats-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-tertiary);
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

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

.cta-subtitle {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3,
.footer-section h4 {
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: var(--text-muted);
  transition: var(--transition-fast);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  transition: var(--transition-normal);
}

.social-link:hover {
  background: var(--primary-color);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
}

/* Responsive Design */
/* Mobile First Approach - Better responsive design */

/* Large screens (desktop) */
@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
  
  .hero h1 {
    font-size: 4rem;
  }
  
  .projects-grid,
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Medium screens (tablets) */
@media (max-width: 1024px) {
  .nav-menu {
    gap: var(--spacing-md);
  }
  
  .hero h1 {
    font-size: 3rem;
  }
  
  .hero p {
    font-size: var(--font-size-lg);
  }
  
  .projects-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Small screens (mobile landscape) */
@media (max-width: 768px) {
  /* Navigation */
  .navbar {
    padding: var(--spacing-md) 0;
  }
  
  .nav-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 15, 26, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-2xl);
    z-index: 1000;
    overflow-y: auto;
  }

  .nav-menu.active {
    display: flex;
  }
  
  .nav-link {
    padding: var(--spacing-lg) 0;
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--border-color);
    width: 100%;
    text-align: center;
  }
  
  .nav-link:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--spacing-sm);
  }
  
  .nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition-fast);
    border-radius: 2px;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  /* Hero Section */
  .hero {
    padding: 4rem 0 3rem;
    text-align: center;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
  }
  
  .hero p {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-2xl);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  /* Grids */
  .projects-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  /* Cards */
  .project-card,
  .feature-card {
    padding: var(--spacing-lg);
  }
  
  .project-card h3,
  .feature-card h3 {
    font-size: var(--font-size-lg);
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .footer-section {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border-color);
  }
  
  .footer-section:last-child {
    border-bottom: none;
  }
}

/* Extra small screens (mobile portrait) */
@media (max-width: 480px) {
  /* Base */
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* Typography */
  .hero h1 {
    font-size: 2rem;
    line-height: 1.1;
  }
  
  .hero p {
    font-size: var(--font-size-sm);
  }
  
  h2 {
    font-size: var(--font-size-xl);
  }
  
  h3 {
    font-size: var(--font-size-lg);
  }

  /* Spacing */
  .section {
    padding: 3rem 0;
  }
  
  .hero {
    padding: 3rem 0 2rem;
  }

  /* Grids */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  /* Cards */
  .project-card,
  .feature-card {
    padding: var(--spacing-md);
  }
  
  /* Buttons */
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
  
  /* Navigation */
  .nav-menu {
    padding: var(--spacing-lg);
  }
}

/* Forms Responsive Design */
@media (max-width: 768px) {
  .form-container,
  .register-container,
  .login-container {
    padding: var(--spacing-lg);
    margin: var(--spacing-lg);
  }
  
  .form-card,
  .register-card,
  .login-card {
    padding: var(--spacing-lg);
    margin: 0;
  }
  
  .form-group {
    margin-bottom: var(--spacing-md);
  }
  
  .form-control {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
  }
  
  .btn-register,
  .btn-login {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
  }
  
  .form-row {
    flex-direction: column;
  }
  
  .form-row .form-group {
    width: 100%;
  }
}

/* Dashboard Responsive Design */
@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .dashboard-actions {
    width: 100%;
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .stat-card {
    text-align: center;
  }
  
  .dashboard-content {
    padding: var(--spacing-lg);
  }
  
  .sidebar {
    position: fixed;
    left: -300px;
    top: 0;
    height: 100vh;
    width: 300px;
    background: var(--bg-secondary);
    transition: var(--transition-normal);
    z-index: 1000;
  }
  
  .sidebar.active {
    left: 0;
  }
  
  .sidebar-toggle {
    display: block;
    padding: var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-bottom: var(--spacing-md);
  }
}

/* Table Responsive Design */
@media (max-width: 768px) {
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  table {
    min-width: 600px;
  }
  
  .table-card {
    margin: 0 var(--spacing-md);
  }
}

/* Utility Classes for Responsive Design */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }

@media (max-width: 768px) {
  .d-md-none { display: none !important; }
  .d-md-block { display: block !important; }
  .d-md-flex { display: flex !important; }
  
  .text-md-center { text-align: center !important; }
  .text-md-left { text-align: left !important; }
  
  .w-md-100 { width: 100% !important; }
  .mw-md-100 { max-width: 100% !important; }
}

@media (max-width: 480px) {
  .d-sm-none { display: none !important; }
  .d-sm-block { display: block !important; }
  .d-sm-flex { display: flex !important; }
  
  .text-sm-center { text-align: center !important; }
  .p-sm-2 { padding: var(--spacing-md) !important; }
  .m-sm-2 { margin: var(--spacing-md) !important; }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.project-card,
.feature-card {
  animation: fadeInUp 0.6s ease forwards;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-light);
}