:root {
  /* WCAG AAA/AA Compliant Light Palette */
  --bg: #f8fafc;            /* Off-white background to prevent eye strain */
  --card-bg: #ffffff;       /* Pure white card backgrounds */
  --text: #0f172a;          /* Slate 900: High contrast text */
  --text-muted: #334155;    /* Slate 700: Readable secondary text */
  --accent: #0284c7;        /* Sky 600: Deep accessible blue */
  --accent-hover: #0369a1;  /* Sky 700: Darker blue hover */
  --cta-green: #059669;     /* Emerald 600: Accessible green */
  --cta-green-hover: #047857;/* Emerald 700: Darker green hover */
  --border: #cbd5e1;        /* Slate 300: High clarity structural borders */
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 2rem 1rem;
  max-width: 800px;
  margin: 0 auto;
}

/* Focus States for Keyboard Accessibility (WCAG 2.4.7) */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

header {
  margin-bottom: 3rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 2rem;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  color: var(--text);
}

p.subtitle {
  color: var(--accent);
  font-size: 1.15rem;
  font-weight: 700;
}

p.bio {
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-size: 1rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  padding-bottom: 0.25rem;
}

/* Card Container with Relative Positioning for Badges */
.project-card {
  position: relative; /* Anchors floating overlay badges */
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.1);
}

/* Floating Badge Container (Top-Right Overlay) */
.project-badges {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  gap: 6px;
  z-index: 10;
}

/* Base Pill Badge */
.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  line-height: 1;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
  letter-spacing: 0.3px;
}

/* Primary Badge Styling */
.badge--primary {
  background-color: #005eb8;
  color: #ffffff;
}

/* Secondary Badge Styling */
.badge--secondary {
  background-color: rgba(255, 255, 255, 0.95);
  color: #334155;
  border: 1px solid #cbd5e1;
  backdrop-filter: blur(4px);
}

.project-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  padding-right: 120px; /* Leave space for top-right badges */
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

/* WCAG AAA Compliant Tag Pills */
.tag {
  background: #eceded;     /* Light Sky Blue */
  color: #414141;          /* Dark Sky Blue (Contrast > 7:1) */
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 700;
}

.links {
  display: flex;
  gap: 1rem;
}

.header-links {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.header-links .btn {
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
}

/* Primary Accent Button */
.btn-primary {
  background-color: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
}

/* Green CTA Button (Complementary Color for Demo) */
.btn-cta-green {
  background-color: var(--cta-green);
  color: #ffffff;          /* Contrast > 4.5:1 */
}

.btn-cta-green:hover {
  background-color: var(--cta-green-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: #f1f5f9;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: #e2e8f0;
  color: #000000;
}

/* High-contrast callout box */
.impact-box {
  background-color: #e9fbe5;  /* Soft Sky Blue background */
  border-left: 4px solid var(--accent);
  border: 1px solid #308f00;
  border-left-width: 4px;
  padding: 0.75rem 1rem;
  margin-top: 1rem;
  border-radius: 0 6px 6px 0;
}

.impact-box p {
  margin: 0;
  font-size: 0.9rem;
  color: #0c4a6e;
  font-weight: 600;
}

.impact-box strong {
  color: var(--accent-hover);
  font-size: 1.2rem;
}

/* Experience logos styling */
.experience-logos {
  width: 100%;
  box-sizing: border-box;
  padding: 20px 0 30px;
  background: transparent;
}

.experience-logos__inner {
  max-width: 1180px;
  margin: 0 auto;
}

.experience-logos h2 {
  margin: 0 0 20px;
}

.experience-logos__row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  column-gap: 28px;
  row-gap: 12px;
}

.experience-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100px;
  height: 32px;
  padding: 4px 8px;
  box-sizing: border-box;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: #0f172a;
  opacity: 0.95;
  transition: opacity 180ms ease, color 180ms ease, border-color 180ms ease;
}

.experience-logo--wide {
  width: 125px;
}

.experience-logo svg {
  display: block;
  width: 100%;
  height: 32px;
  fill: currentColor;
}

.experience-logo:hover {
  opacity: 1;
  color: #000000;
  border-color: var(--accent);
}

.experience-logo--fujifilm:hover {
  color: #e60012;
  border-color: #e60012;
}

@media (max-width: 700px) {
  .header-top {
    align-items: flex-start;
    flex-direction: column;
  }
  .header-links {
    justify-content: flex-start;
  }
  .experience-logos__row {
    column-gap: 18px;
    row-gap: 10px;
  }
  .experience-logo {
    width: 90px;
    height: 30px;
  }
  .experience-logo--wide {
    width: 110px;
  }
}

@media (max-width: 480px) {
  .experience-logos__row {
    column-gap: 12px;
  }
  .experience-logo {
    width: 82px;
    height: 30px;
  }
  .experience-logo--wide {
    width: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .experience-logo, .project-card, .btn {
    transition: none;
  }
}

footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 4rem;
  border-top: 2px solid var(--border);
  padding-top: 1.5rem;
}