/* ==========================================================================
   Kevin J Mosley — Technical Support Engineer portfolio
   Plain CSS, mobile-first, no framework dependency.
   ========================================================================== */

:root {
  /* Color */
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-bg-dark: #10151f;
  --color-text: #1a1d23;
  --color-text-muted: #5a6270;
  --color-text-on-dark: #f5f7fa;
  --color-text-on-dark-muted: #aab1bd;
  --color-primary: #0a66c2;
  --color-primary-dark: #084a8f;
  --color-border: #e2e5ea;
  --color-border-dark: #2a3242;

  /* Type */
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --fs-h1: clamp(2.25rem, 5vw + 1rem, 3.5rem);
  --fs-h2: clamp(1.5rem, 2.5vw + 1rem, 2.25rem);
  --fs-h3: 1.125rem;
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --lh-body: 1.65;

  /* Layout */
  --max-width: 1120px;
  --radius: 10px;
  --radius-sm: 6px;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --header-height: 68px;
}

/* Reset ------------------------------------------------------------------ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

h1,
h2,
h3,
p {
  margin: 0;
}

button {
  font: inherit;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

section {
  padding: var(--space-6) 0;
}

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

.eyebrow {
  display: block;
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.section-intro {
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-top: var(--space-2);
}

.section-header {
  margin-bottom: var(--space-4);
}

/* Buttons ------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--fs-body);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:hover,
.btn:focus-visible {
  text-decoration: none;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-primary-dark);
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.icon {
  width: 1.1em;
  height: 1.1em;
  fill: currentColor;
  flex-shrink: 0;
}

/* Skip link ------------------------------------------------------------------ */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 200;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
}

/* Header / nav ------------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
}

.site-logo:hover {
  text-decoration: none;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.nav-toggle .icon {
  width: 1.35em;
  height: 1.35em;
}

.nav-toggle .icon-close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-open {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

.main-nav {
  position: fixed;
  inset: var(--header-height) 0 0 0;
  background: var(--color-bg);
  padding: var(--space-3);
  display: none;
  overflow-y: auto;
}

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

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.nav-list a {
  display: block;
  padding: var(--space-2) var(--space-1);
  color: var(--color-text);
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-social {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.nav-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text);
}

.nav-social a:hover,
.nav-social a:focus-visible {
  color: var(--color-primary);
  border-color: var(--color-primary);
  text-decoration: none;
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    position: static;
    inset: auto;
    display: block;
    padding: 0;
    background: transparent;
    overflow: visible;
  }

  .nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
  }

  .nav-list a {
    padding: 0.25rem 0;
    border-bottom: none;
  }

  .nav-social {
    margin-top: 0;
    margin-left: var(--space-4);
  }

  .main-nav .container-inner {
    display: flex;
    align-items: center;
  }
}

/* Hero ------------------------------------------------------------------ */

.hero {
  padding-top: var(--space-5);
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.hero-subheading {
  display: block;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.hero-title {
  font-size: var(--fs-h1);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-intro {
  margin-top: var(--space-3);
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 55ch;
  margin-left: auto;
  margin-right: auto;
}

.hero .cta-row {
  justify-content: center;
}

.image-slot {
  aspect-ratio: var(--ar, 1 / 1);
  border-radius: var(--radius);
  background: var(--color-bg-alt);
  border: 1px dashed var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  overflow: hidden;
}

.image-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-note {
  margin-top: var(--space-1);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center;
}

/* About ------------------------------------------------------------------ */

.about-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about-body p + p {
  margin-top: var(--space-3);
}

.about-photo {
  width: 200px;
  margin: 0 auto;
}

.about-photo .image-slot {
  aspect-ratio: auto;
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
  overflow: visible;
}

.about-photo .image-slot img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

@media (min-width: 900px) {
  .about-grid {
    flex-direction: row-reverse;
    align-items: flex-start;
    gap: var(--space-5);
  }

  .about-photo {
    width: 260px;
    margin: 0;
    flex-shrink: 0;
  }

  .about-body {
    flex: 1;
  }
}

/* Tools & Platforms ------------------------------------------------------------------ */

.tools-grid {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.tools-group h3 {
  font-size: var(--fs-h3);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

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

.pill {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-text);
  transition: transform 0.15s ease, background-color 0.15s ease,
    border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.pill:hover {
  transform: translateY(-2px);
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 6px 14px rgba(10, 102, 194, 0.25);
}

@media (min-width: 700px) {
  .tools-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Experience ------------------------------------------------------------------ */

.job-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.job-card {
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.job-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.job-card h3 {
  font-size: var(--fs-h3);
  font-weight: 700;
}

.job-meta {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  margin-top: 0.15rem;
  margin-bottom: var(--space-2);
}

.job-card ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.job-card li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--color-text);
}

.job-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* Projects ------------------------------------------------------------------ */

.projects-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.project-card {
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.project-card h3 {
  font-size: var(--fs-h3);
  font-weight: 700;
}

.project-card .eyebrow {
  margin-bottom: 0.4rem;
}

.project-card p {
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.project-card .btn {
  margin-top: var(--space-2);
  padding: 0.5rem 1rem;
  font-size: var(--fs-small);
}

@media (min-width: 700px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Contact ------------------------------------------------------------------ */

.contact-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-cta-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: var(--space-4);
}

.contact-cta-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text);
  font-weight: 600;
}

.contact-cta-list a:hover,
.contact-cta-list a:focus-visible {
  color: var(--color-primary);
}

.form-wrapper {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: var(--space-3);
}

.form-field label {
  font-size: var(--fs-small);
  font-weight: 600;
}

.form-field input,
.form-field textarea {
  font: inherit;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
}

.form-field input:focus,
.form-field textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (min-width: 900px) {
  .contact-grid {
    flex-direction: row;
    gap: var(--space-6);
  }

  .contact-intro {
    flex: 1;
  }

  .form-wrapper {
    flex: 1.1;
  }
}

/* Footer ------------------------------------------------------------------ */

.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark-muted);
  padding: var(--space-4) 0;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
}

.footer-social {
  display: flex;
  gap: var(--space-2);
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border-dark);
  border-radius: 50%;
  color: var(--color-text-on-dark);
}

.footer-social a:hover,
.footer-social a:focus-visible {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

.footer-copy {
  font-size: var(--fs-small);
}

@media (min-width: 700px) {
  .site-footer .container {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* Utility ------------------------------------------------------------------ */

.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;
}