/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* CSS Custom Properties */
:root {
  /* Colors */
  --emerald-primary: #10B981;
  --emerald-light: #34D399;
  --emerald-dark: #047857;
  --wooden-primary: #8B5E3C;
  --wooden-light: #A0744F;
  --wooden-dark: #6B4423;
  
  /* Background Colors */
  --bg-primary: #0F1724;
  --bg-secondary: #1A202C;
  --bg-tertiary: #2D3748;
  --bg-section-alt: #161B22;
  
  /* Text Colors */
  --text-primary: #F7FAFC;
  --text-secondary: #E2E8F0;
  --text-muted: #A0AEC0;
  
  /* Spacing */
  --section-padding: 5rem 0;
  
  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-emerald: 0 4px 14px 0 rgba(16, 185, 129, 0.39);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

/* Base Styles */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 400;
}

/* Utility Classes */
.text-emerald {
  color: var(--emerald-primary) !important;
}

.text-wooden {
  color: var(--wooden-primary) !important;
}

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

.section-padding {
  padding: var(--section-padding);
}

/* Custom Button Styles */
.btn-emerald {
  background-color: var(--emerald-primary);
  border-color: var(--emerald-primary);
  color: white;
  font-weight: 500;
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn-emerald:hover,
.btn-emerald:focus {
  background-color: var(--emerald-dark);
  border-color: var(--emerald-dark);
  color: white;
  box-shadow: var(--shadow-emerald);
  transform: translateY(-2px);
}

.btn-outline-emerald {
  border-color: var(--emerald-primary);
  color: var(--emerald-primary);
  background-color: transparent;
  font-weight: 500;
  transition: var(--transition-base);
}

.btn-outline-emerald:hover,
.btn-outline-emerald:focus {
  background-color: var(--emerald-primary);
  border-color: var(--emerald-primary);
  color: white;
  box-shadow: var(--shadow-emerald);
}

.btn-wooden {
  background-color: var(--wooden-primary);
  border-color: var(--wooden-primary);
  color: white;
  font-weight: 500;
  transition: var(--transition-base);
}

.btn-wooden:hover,
.btn-wooden:focus {
  background-color: var(--wooden-dark);
  border-color: var(--wooden-dark);
  color: white;
  transform: translateY(-2px);
}

.btn-outline-wooden {
  border-color: var(--wooden-primary);
  color: var(--wooden-primary);
  background-color: transparent;
  font-weight: 500;
  transition: var(--transition-base);
}

.btn-outline-wooden:hover,
.btn-outline-wooden:focus {
  background-color: var(--wooden-primary);
  border-color: var(--wooden-primary);
  color: white;
}

/* Header / Navigation */
#mainNavbar {
  background-color: rgba(15, 23, 36, 0.95);
  backdrop-filter: blur(10px);
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
}

#mainNavbar.scrolled {
  background-color: var(--bg-primary);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 600;
}

.navbar-nav .nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  margin: 0 0.5rem;
  transition: var(--transition-fast);
  position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus,
.navbar-nav .nav-link.active {
  color: var(--emerald-primary);
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 50%;
  background-color: var(--emerald-primary);
  transition: var(--transition-base);
  transform: translateX(-50%);
}

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

.navbar-toggler {
  border: none;
  padding: 0.25rem 0;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Hero Section */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 94, 60, 0.1) 0%, transparent 50%);
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 600px;
}

.hero-cta {
  margin-top: 2rem;
}

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

.avatar-container {
  display: inline-block;
  position: relative;
}

.avatar-container img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border: 4px solid var(--emerald-primary);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-base);
}

.avatar-container::before {
  content: '';
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--emerald-primary), var(--wooden-primary));
  z-index: -1;
  opacity: 0.6;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 0.3; }
}

/* Section Headers */
.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--emerald-primary), var(--wooden-primary));
  margin: 0 auto 1rem;
  border-radius: var(--radius-sm);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about-content .lead {
  font-size: 1.2rem;
  color: var(--text-secondary);
}

.note-box {
  background-color: var(--bg-tertiary);
  border-left: 4px solid var(--emerald-primary);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

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

.skill-badge {
  background-color: var(--bg-tertiary);
  padding: 1rem;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition-base);
  cursor: default;
  border: 2px solid transparent;
}

.skill-badge:hover {
  transform: translateY(-5px);
  border-color: var(--emerald-primary);
  box-shadow: var(--shadow-lg);
}

.skill-badge i {
  font-size: 1.5rem;
  color: var(--emerald-primary);
  margin-bottom: 0.5rem;
  display: block;
}

.skill-badge span {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.9rem;
}

/* Services Section */
.service-card {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: var(--radius-xl);
  text-align: center;
  transition: var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
  height: 100%;
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: var(--emerald-primary);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--emerald-primary), var(--emerald-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  transition: var(--transition-base);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.service-icon i {
  font-size: 2rem;
  color: white;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.service-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Portfolio Section */
.portfolio-filters {
  margin-bottom: 3rem;
}

.filter-btn {
  background: none;
  border: 2px solid var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.75rem 1.5rem;
  margin: 0 0.5rem;
  border-radius: var(--radius-lg);
  font-weight: 500;
  transition: var(--transition-base);
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--emerald-primary);
  color: var(--emerald-primary);
  background-color: rgba(16, 185, 129, 0.1);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.portfolio-item {
  opacity: 1;
  transform: scale(1);
  transition: var(--transition-base);
}

.portfolio-item.hidden {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.portfolio-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--bg-secondary);
  transition: var(--transition-base);
}

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

.portfolio-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: var(--transition-base);
}

.portfolio-powerbi-placeholder {
  height: 250px;
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  border: 2px dashed var(--emerald-primary);
  color: var(--text-secondary);
}

.portfolio-powerbi-placeholder i {
  font-size: 3rem;
  color: var(--emerald-primary);
  margin-bottom: 1rem;
}

.powerbi-embed-note {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background-color: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-muted);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-base);
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-content {
  text-align: center;
  padding: 2rem;
}

.portfolio-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.portfolio-content p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

/* Contact Section */
.contact-form-wrapper {
  background-color: var(--bg-secondary);
  padding: 3rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.contact-form .form-label {
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.contact-form .form-control,
.contact-form .form-select {
  background-color: var(--bg-tertiary);
  border: 2px solid transparent;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  transition: var(--transition-base);
}

.contact-form .form-control:focus,
.contact-form .form-select:focus {
  background-color: var(--bg-tertiary);
  border-color: var(--emerald-primary);
  box-shadow: 0 0 0 0.2rem rgba(16, 185, 129, 0.25);
  color: var(--text-primary);
}

.contact-form .form-control::placeholder {
  color: var(--text-muted);
}

.invalid-feedback {
  color: #e53e3e;
  font-size: 0.875rem;
}

.form-control.is-invalid,
.form-select.is-invalid {
  border-color: #e53e3e;
}

#form-messages {
  min-height: 1.5rem;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--emerald-primary);
  color: var(--emerald-light);
}

.alert-danger {
  background-color: rgba(229, 62, 62, 0.1);
  border: 1px solid #e53e3e;
  color: #fc8181;
}

/* Modal Styles */
.modal-content {
  background-color: var(--bg-secondary);
  border: none;
  border-radius: var(--radius-xl);
  color: var(--text-primary);
}

.modal-header {
  border-bottom: 1px solid var(--bg-tertiary);
}

.modal-title {
  font-weight: 600;
  color: var(--text-primary);
}

.btn-close-white {
  filter: brightness(0) invert(1);
}

.portfolio-modal-image img {
  max-height: 400px;
  width: 100%;
  object-fit: cover;
}

.portfolio-tools {
  background-color: var(--bg-tertiary);
  padding: 1rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--emerald-primary);
}

/* Footer */
.footer-section {
  background-color: var(--bg-secondary);
  padding: 2rem 0;
  border-top: 1px solid var(--bg-tertiary);
}

.social-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 50%;
  transition: var(--transition-base);
  text-decoration: none;
}

.social-link:hover {
  background-color: var(--emerald-primary);
  color: white;
  transform: translateY(-3px);
}

/* Animations */
.fade-in {
  animation: fadeInUp 1s ease forwards;
}

.fade-in-delay {
  animation: fadeInUp 1s ease 0.3s forwards;
  opacity: 0;
}

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

.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-100 {
  transition-delay: 0.1s;
}

.reveal-delay-200 {
  transition-delay: 0.2s;
}

.reveal-delay-300 {
  transition-delay: 0.3s;
}

/* Responsive Design */
@media (max-width: 991.98px) {
  .hero-title {
    font-size: 2.5rem;
    text-align: center;
  }
  
  .hero-subtitle {
    text-align: center;
    font-size: 1.1rem;
  }
  
  .hero-cta {
    text-align: center;
  }
  
  .avatar-container img {
    width: 220px;
    height: 220px;
  }
  
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
  }
  
  .skill-badge {
    padding: 0.75rem;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-padding: 3rem 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .contact-form-wrapper {
    padding: 2rem;
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .social-links {
    justify-content: center;
    margin-top: 1rem;
  }
}

@media (max-width: 575.98px) {
  .filter-btn {
    padding: 0.5rem 1rem;
    margin: 0 0.25rem 0.5rem;
    font-size: 0.875rem;
  }
  
  .hero-cta .btn {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
  }
  
  .hero-cta .btn:last-child {
    margin-bottom: 0;
  }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles for accessibility */
.btn:focus,
.form-control:focus,
.form-select:focus,
.nav-link:focus,
.social-link:focus {
  outline: 2px solid var(--emerald-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --bg-primary: #000000;
    --text-primary: #ffffff;
    --emerald-primary: #00ff00;
  }
}