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


:root {
  --bg-start: #0f172a;
  --bg-end: #111827;
  --card-bg: rgba(15, 23, 42, 0.6);
  --text-primary: #f1f5f9;
  --text-secondary: #9ca3af;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.6);
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
}


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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 100px;
}


h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h1 {
  font-size: 4rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
}

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


.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  background: var(--bg-end);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  z-index: 10000;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}


.fixed-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 1.5rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  width: 100%;
  box-sizing: border-box;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #042033;
  box-shadow: var(--shadow-sm);
  font-size: 1.25rem;
}

.name {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.tagline {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.4;
}


.nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(59, 130, 246, 0.4);
  background: rgba(15, 23, 42, 0.6);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav-toggle:hover,
.nav-toggle:focus {
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(59, 130, 246, 0.35);
  outline: none;
}

.nav-toggle-bar {
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 999px;
}

.nav a {
  display: inline-block;
  padding: 0.625rem 1.125rem;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 2px solid transparent;
  color: var(--accent);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
}

.nav a:hover,
.nav a:focus {
  border-color: rgba(59, 130, 246, 0.5);
  background: rgba(59, 130, 246, 0.1);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
  outline: none;
}

.nav a.active {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.15);
  font-weight: 600;
}


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

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}


.section {
  padding: var(--spacing-2xl) 0;
  border-top: 1px solid rgba(59, 130, 246, 0.12);
}

.section-alt {
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.05) 0%, transparent 100%);
}


.hero-section {
  padding: var(--spacing-2xl) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.hero-image-wrapper {
  margin-bottom: var(--spacing-lg);
}

.hero-image {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 4px solid rgba(59, 130, 246, 0.3);
  box-shadow: var(--shadow-lg);
  margin: 0 auto;
  display: block;
  object-fit: cover;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image:hover {
  transform: scale(1.05);
  box-shadow: 0 25px 70px rgba(59, 130, 246, 0.4);
}

.hero-section h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: var(--spacing-md);
}

.hero-bio {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

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

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .hero-bio {
    font-size: 1rem;
  }
}


.content-card {
  background: var(--card-bg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(59, 130, 246, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  margin-bottom: var(--spacing-lg);
}

.content-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.certifications-card {
  background: var(--card-bg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(59, 130, 246, 0.1);
  margin-top: var(--spacing-lg);
}

.certifications-card h3 {
  margin-bottom: var(--spacing-md);
}

.certifications-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.certifications-list li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--spacing-md);
}

.certifications-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}


.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.skill-item {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(96, 165, 250, 0.1));
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid rgba(59, 130, 246, 0.2);
  transition: all 0.3s ease;
  cursor: default;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.skill-item:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(96, 165, 250, 0.2));
}

.skill-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
  transition: all 0.3s ease;
}

.skill-item:hover .skill-logo {
  opacity: 1;
  transform: scale(1.1);
}

.skill-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-top: var(--spacing-xs);
}

@media (max-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-sm);
  }
  
  .skill-logo {
    width: 40px;
    height: 40px;
  }
  
  .skill-name {
    font-size: 0.75rem;
  }
}


.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  align-items: stretch;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: stretch;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: stretch;
  }

  .project-card.project-todo {
    order: 3;
  }

  .project-card.project-spendguard {
    order: 2;
  }

  .project-card.project-africlimate {
    order: 1;
  }
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(59, 130, 246, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: var(--shadow-lg);
}

.project-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  margin-bottom: 0;
  flex-shrink: 0;
}

.project-content {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.project-content h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  flex-shrink: 0;
}

.project-content p {
  flex: 1;
  margin-bottom: var(--spacing-md);
  min-height: 0;
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  flex-shrink: 0;
}

.pill {
  background: rgba(59, 130, 246, 0.15);
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--accent-hover);
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-weight: 500;
}

.project-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: auto;
  flex-shrink: 0;
}


.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  font-family: inherit;
}

.btn:hover,
.btn:focus {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
  box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border: 2px solid transparent;
  color: #042033;
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  color: #042033;
  box-shadow: 0 0 25px rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
}

.btn-secondary {
  border-color: var(--text-secondary);
  color: var(--text-secondary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}


.contact-intro {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: 1.125rem;
}

.contact-form {
  max-width: 680px;
  margin: 0 auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

@media (min-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-sm);
  border: 2px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
  transform: scale(1.01);
}

.form-group input:hover,
.form-group textarea:hover {
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

/* Footer */
footer {
  width: 100%;
  margin: var(--spacing-2xl) auto 0;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--text-secondary);
  text-align: center;
  border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.social-link:hover,
.social-link:focus {
  color: var(--accent);
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
  outline: none;
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.social-link span {
  font-size: 0.875rem;
  font-weight: 500;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
  }
}


.mt-10 {
  margin-top: var(--spacing-sm);
}

.mt-12 {
  margin-top: var(--spacing-md);
}

.mb-16 {
  margin-bottom: var(--spacing-lg);
}

.small {
  font-size: 0.875rem;
}

.muted-strong {
  color: var(--text-secondary);
}


@media (max-width: 880px) {
  .fixed-header {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
  }

  .fixed-header .tagline {
    display: none;
  }

  .nav ul {
    width: 100%;
    justify-content: center;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

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

@media (max-width: 640px) {
  body {
    padding-top: 0;
  }

  .fixed-header {
    position: sticky;
    top: 0;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .brand {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
    order: 1;
    flex: 1;
  }

  .logo {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
  }

  .name {
    font-size: 1.1rem;
  }

  .nav {
    width: 100%;
    order: 3;
  }

  .nav ul {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .fixed-header.nav-open .nav ul {
    max-height: 320px;
  }

  .nav-toggle {
    display: inline-flex;
    order: 2;
    margin-left: auto;
  }

  .nav a {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    width: 100%;
    text-align: center;
  }

  .hero-section {
    min-height: 60vh;
    padding: var(--spacing-xl) 0;
  }

  .hero-image {
    width: 132px;
    height: 132px;
  }

  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .hero-bio {
    font-size: 0.9375rem;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    line-clamp: 4;
    overflow: hidden;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .content-card,
  .certifications-card {
    padding: var(--spacing-md);
  }

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

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

  .project-image {
    height: 200px;
  }

  .pill {
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
  }

  .project-actions {
    flex-direction: column;
  }

  .project-actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 480px) {
  body {
    padding-top: 0;
  }

  .fixed-header {
    padding: 0.75rem 1rem;
  }

  .hero-section {
    min-height: auto;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero-bio {
    margin-bottom: var(--spacing-lg);
  }

  .content-card,
  .certifications-card {
    padding: var(--spacing-sm);
  }

  .project-image {
    height: 180px;
  }
}


.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border: 2px solid rgba(59, 130, 246, 0.3);
  color: #042033;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
}

.back-to-top.visible {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px) scale(1.05);
  outline: none;
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
}

@media (max-width: 640px) {
  .back-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
  
  .back-to-top svg {
    width: 20px;
    height: 20px;
  }
}


a:focus,
button:focus {
  outline: 3px solid rgba(59, 130, 246, 0.5);
  outline-offset: 2px;
}


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