/* ==========================================================================
   sphexi.com — Global Styles
   Color palette: coolors.co/palette/0d1321-1d2d44-3e5c76-748cab-f0ebd8
   ========================================================================== */

/* --- Custom Properties --- */
:root {
  /* Palette */
  --color-rich-black: #0D1321;
  --color-dark-navy: #1D2D44;
  --color-steel-blue: #3E5C76;
  --color-dusty-blue: #748CAB;
  --color-cream: #F0EBD8;

  /* Semantic tokens — light mode */
  --bg: #ffffff;
  --bg-alt: var(--color-cream);
  --text: var(--color-rich-black);
  --text-muted: var(--color-steel-blue);
  --accent: var(--color-steel-blue);
  --accent-hover: var(--color-dark-navy);
  --border: #d5d5d5;
  --card-bg: #ffffff;
  --card-border: var(--border);
  --nav-bg: var(--color-dark-navy);
  --nav-text: var(--color-cream);
  --nav-hover: #ffffff;
  --tag-bg: var(--color-cream);
  --tag-text: var(--color-dark-navy);
  --footer-bg: var(--color-rich-black);
  --footer-text: var(--color-dusty-blue);

  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  --font-heading: "Inter", var(--font-body);
  --line-height: 1.7;
  --measure: 65ch; /* comfortable reading width */

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;

  /* Transitions */
  --transition: 0.2s ease;
}

/* --- Dark mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--color-rich-black);
    --bg-alt: var(--color-dark-navy);
    --text: var(--color-cream);
    --text-muted: var(--color-dusty-blue);
    --accent: var(--color-dusty-blue);
    --accent-hover: var(--color-cream);
    --border: #2a3a50;
    --card-bg: var(--color-dark-navy);
    --card-border: var(--color-steel-blue);
    --tag-bg: var(--color-dark-navy);
    --tag-text: var(--color-dusty-blue);
  }
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: var(--line-height);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
h4 { font-size: 1.1rem; }

p {
  max-width: var(--measure);
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition);
}

a:hover,
a:focus-visible {
  color: var(--accent-hover);
}

/* --- Skip link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--accent);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  z-index: 1000;
  font-size: 0.875rem;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* --- Layout --- */
.container {
  width: min(var(--measure), 90%);
  margin-inline: auto;
}

.container--wide {
  width: min(80rem, 90%);
  margin-inline: auto;
}

/* --- Navigation --- */
.site-nav {
  background: var(--nav-bg);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-nav .container--wide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--nav-text);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.site-nav__brand:hover {
  color: var(--nav-hover);
}

.site-nav__brand img {
  width: 32px;
  height: 27px;
}

.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.site-nav__links a {
  color: var(--nav-text);
  text-decoration: none;
  font-size: 0.925rem;
  padding: var(--space-xs) 0;
  transition: color var(--transition);
}

.site-nav__links a:hover,
.site-nav__links a:focus-visible {
  color: var(--nav-hover);
}

.site-nav__links a[aria-current="page"] {
  border-bottom: 2px solid var(--color-cream);
}

/* External link indicator */
.site-nav__links a[target="_blank"]::after {
  content: " \2197";
  font-size: 0.75em;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--nav-text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-xs);
  line-height: 1;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav__links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    padding: var(--space-md);
    gap: var(--space-sm);
    border-top: 1px solid var(--color-steel-blue);
  }

  .site-nav__links.is-open {
    display: flex;
  }
}

/* --- Hero section (homepage) --- */
.hero {
  padding: var(--space-2xl) 0;
  text-align: center;
}

.hero__title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: var(--space-xs);
}

.hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: var(--space-lg);
}

.hero__intro {
  max-width: var(--measure);
  margin-inline: auto;
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
}

/* --- Highlight cards (homepage) --- */
.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.highlight-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

.highlight-card__stat {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-xs);
}

.highlight-card__label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- CTA links row --- */
.cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.cta-link {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border: 2px solid var(--accent);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition);
}

.cta-link:hover,
.cta-link:focus-visible {
  background: var(--accent);
  color: #fff;
}

.cta-link--primary {
  background: var(--accent);
  color: #fff;
}

.cta-link--primary:hover,
.cta-link--primary:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

/* --- Page header (inner pages) --- */
.page-header {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  margin-bottom: var(--space-xs);
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* --- Content sections --- */
.content-section {
  margin-bottom: var(--space-xl);
}

.content-section h2 {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--border);
}

.content-section h3 {
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
}

.content-section p {
  margin-bottom: var(--space-md);
}

.content-section ul,
.content-section ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.content-section li {
  margin-bottom: var(--space-xs);
}

/* --- Project cards --- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: var(--space-lg);
  transition: border-color var(--transition);
}

.project-card:hover {
  border-color: var(--accent);
}

.project-card h3 {
  margin-bottom: var(--space-sm);
  margin-top: 0;
}

.project-card h3 a {
  text-decoration: none;
}

.project-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* --- Project detail page --- */
.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.project-meta a {
  font-weight: 600;
}

/* --- Resume specific --- */
.resume-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.resume-header h1 {
  margin-bottom: var(--space-xs);
}

.resume-header .subtitle {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.resume-header .contact-links {
  margin-top: var(--space-sm);
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.9rem;
}

.resume-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.experience-item {
  margin-bottom: var(--space-xl);
}

.experience-item h3 {
  margin-top: 0;
}

.experience-item .role {
  font-weight: 600;
  font-size: 1.05rem;
}

.experience-item .dates {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.experience-item ul {
  padding-left: var(--space-lg);
}

.experience-item li {
  margin-bottom: var(--space-xs);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.skills-grid h3 {
  margin-top: 0;
  font-size: 1rem;
  color: var(--accent);
}

.skills-grid ul {
  list-style: none;
  padding: 0;
}

.skills-grid li {
  padding: 2px 0;
  font-size: 0.95rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
  text-align: center;
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--color-cream);
}

.site-footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  list-style: none;
  margin-bottom: var(--space-md);
}

.site-footer__copy {
  color: var(--color-steel-blue);
  font-size: 0.8rem;
}

/* --- Utilities --- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

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

/* --- Print stylesheet --- */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
  }

  body {
    font-size: 11pt;
    line-height: 1.4;
  }

  .site-nav,
  .site-footer,
  .nav-toggle,
  .skip-link,
  .resume-actions,
  .cta-links {
    display: none !important;
  }

  a {
    text-decoration: none;
  }

  h1 { font-size: 18pt; }
  h2 { font-size: 14pt; border-bottom: 1pt solid #ccc; padding-bottom: 2pt; }
  h3 { font-size: 12pt; }

  .container,
  .container--wide {
    width: 100%;
    max-width: none;
  }

  .resume-header {
    margin-bottom: 12pt;
  }

  .experience-item {
    margin-bottom: 14pt;
    page-break-inside: avoid;
  }

  .content-section {
    page-break-inside: avoid;
  }
}