/* ==========================================================================
   mvcprogrammer.com — styles.css
   Mobile-first. Light/dark follows the OS via prefers-color-scheme.
   ========================================================================== */

/* ---------- Fonts (self-hosted, latin subset, variable weight) ---------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("assets/fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url("assets/fonts/jetbrains-mono-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- Design tokens ---------- */
:root {
  color-scheme: light dark;

  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Light palette */
  --bg: #f8fafc;
  --bg-alt: #eef2f6;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #dde3ea;
  --accent: #0f766e;
  --accent-hover: #0b5f59;
  --accent-contrast: #ffffff;
  --accent-soft: rgba(15, 118, 110, 0.10);
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);

  --radius: 12px;
  --radius-sm: 8px;
  --container: 72rem;
  --gutter: 1.25rem;
  --header-h: 4rem;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-alt: #0f172a;
    --surface: #131c2e;
    --text: #e6eaf2;
    --text-muted: #a3aec2;
    --border: #243148;
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --accent-contrast: #052e2a;
    --accent-soft: rgba(45, 212, 191, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

/* ---------- Reset & base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.5rem);
  margin-bottom: 1.5rem;
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: none;
}

.accent {
  color: var(--accent);
}

/* ---------- Typography helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.lead {
  font-size: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  color: var(--text-muted);
  max-width: 40rem;
  text-wrap: pretty;
}

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.2;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.button-primary:hover {
  background: var(--accent-hover);
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.button-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* ---------- Header & nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg); /* fallback for browsers without color-mix() */
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--accent);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  margin-right: -0.5rem;
  background: none;
  border: 0;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 1.375rem;
  height: 2px;
  margin-inline: auto;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: none;
  padding: 0.75rem var(--gutter) 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.site-nav.is-open {
  display: block;
}

.nav-list {
  display: flex;
  flex-direction: column;
}

.nav-link {
  display: block;
  padding: 0.65rem 0.25rem;
  color: var(--text);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.nav-link:hover {
  color: var(--accent);
  text-decoration: none;
}

.nav-link[aria-current="true"] {
  color: var(--accent);
}

.social-list {
  display: flex;
  gap: 0.25rem;
  margin-top: 0.75rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.social-link:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

@media (min-width: 48em) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }

  .nav-list {
    flex-direction: row;
    gap: 0.25rem;
  }

  .nav-link {
    position: relative;
    padding: 0.5rem 0.75rem;
    border: 0;
    font-size: 0.9375rem;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0.15rem;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s var(--ease);
  }

  .nav-link:hover::after,
  .nav-link[aria-current="true"]::after {
    transform: scaleX(1);
  }

  .social-list {
    margin: 0;
    padding-left: 1rem;
    border-left: 1px solid var(--border);
  }
}

/* ---------- Sections ---------- */
.section {
  padding-block: clamp(4rem, 8vw, 7rem);
}

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

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-bottom: 1.5rem;
}

.section-head h2 {
  margin-bottom: 0;
}

.subsection-title {
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  font-size: 1.375rem;
}

/* ---------- Hero ---------- */
.hero {
  padding-block: clamp(5rem, 14vw, 10rem) clamp(4rem, 10vw, 7rem);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(2.75rem, 2rem + 5vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.5rem;
  margin-top: 2.5rem;
}

.highlights li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.highlight-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.1;
}

.highlight-label {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  gap: 2.5rem;
}

.about-body p {
  max-width: 44rem;
  text-wrap: pretty;
}

.about-body .button {
  margin-top: 1rem;
}

.aside-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

@media (min-width: 48em) {
  .about-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 4rem;
  }
}

/* ---------- Quote ---------- */
.quote-band {
  padding-block: clamp(3rem, 6vw, 5rem);
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.quote {
  margin: 0;
  max-width: 52rem;
  margin-inline: auto;
  text-align: center;
}

.quote blockquote {
  margin: 0;
}

.quote blockquote p {
  font-size: clamp(1.25rem, 1rem + 1.4vw, 1.75rem);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.quote figcaption {
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.quote figcaption::before {
  content: "— ";
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  gap: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.service-card {
  padding: 1.75rem;
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1.25rem;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}

.service-icon .icon {
  width: 1.5rem;
  height: 1.5rem;
}

.service-card h3 {
  margin-bottom: 0.5rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 1rem;
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Shown by main.js when a portfolio image file is missing */
.card-media.is-missing img {
  display: none;
}

.card-media.is-missing::after {
  content: attr(data-label);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  background:
    repeating-linear-gradient(135deg, transparent 0 10px, var(--accent-soft) 10px 11px);
}

.card-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.card-body h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.card-subtitle {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.card-subtitle:last-child {
  margin-bottom: 0;
}

.card-body > p:not(.card-subtitle) {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

@media (min-width: 40em) {
  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* The "under the hood" card spans the grid with its image beside the text */
  .portfolio-card-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .portfolio-card-featured .card-media {
    aspect-ratio: auto;
    min-height: 16rem;
    border-bottom: 0;
    border-right: 1px solid var(--border);
  }

  /* The featured photo has its subject on the right; keep it in frame when the text column sets the height */
  .portfolio-card-featured .card-media img {
    object-position: 72% center;
  }

  .portfolio-card-featured .card-body {
    align-self: center;
    padding: 2rem;
  }
}

@media (min-width: 64em) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: 1.75rem;
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1.75rem - 7px);
  top: 0.45rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.timeline-item h3,
.timeline-item h4 {
  font-size: 1.125rem;
  margin-bottom: 0.15rem;
}

.timeline-org {
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.timeline-points {
  display: grid;
  gap: 0.35rem;
  max-width: 44rem;
  color: var(--text-muted);
  list-style: disc;
  padding-left: 1.25rem;
}

.timeline-compact .timeline-item {
  padding-bottom: 1.5rem;
}

.timeline-compact .timeline-org {
  margin-bottom: 0;
}

@media (min-width: 48em) {
  .timeline {
    padding-left: 2.5rem;
  }

  .timeline-item::before {
    left: calc(-2.5rem - 7px);
  }
}

/* ---------- Contact ---------- */
.contact-list {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  color: var(--text);
  font-weight: 500;
  font-size: 1.0625rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.contact-link .icon {
  color: var(--accent);
}

.contact-link:hover {
  text-decoration: none;
  border-color: var(--accent);
  transform: translateY(-1px);
}

@media (min-width: 40em) {
  .contact-list {
    grid-template-columns: repeat(2, max-content);
  }
}

/* ---------- Footer ---------- */
.site-footer {
  padding-block: 2rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

.site-footer .social-list {
  margin: 0;
}