/* ==========================================================================
   OUTDOOR DEVS — style.css
   Single stylesheet for the entire site.
   ========================================================================== */

/* ---------- 1. Design Tokens (Custom Properties) ---------- */

:root {
  --color-primary:       #2D6A4F;
  --color-primary-light: #40916C;
  --color-primary-dark:  #1B4332;
  --color-accent:        #D4A373;
  --color-accent-light:  #E9C46A;
  --color-bg:            #FAFAF5;
  --color-bg-alt:        #F0EDE5;
  --color-surface:       #FFFFFF;
  --color-text:          #1A1A2E;
  --color-text-muted:    #555B6E;
  --color-text-light:    #8D99AE;
  --color-border:        #D5D5C8;
  --color-code-bg:       #F4F1E8;
  --color-link:          #2D6A4F;
  --color-link-hover:    #1B4332;

  --font-body:    system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-heading: system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono:    ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;

  --text-sm:  0.875rem;
  --text-base: 1rem;
  --text-lg:  1.125rem;
  --text-xl:  1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-4xl: 3rem;

  --leading-tight:  1.25;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --max-width:         1200px;
  --max-width-content: 780px;
  --border-radius:     0.5rem;
  --border-radius-lg:  1rem;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* ---------- 2. Reset ---------- */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, picture, video, svg { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; }
a { color: var(--color-link); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-link-hover); }
ul, ol { list-style: none; }

/* ---------- 3. Base Typography ---------- */

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  color: var(--color-primary-dark);
}

h1 { font-size: var(--text-3xl); font-weight: 800; }
h2 { font-size: var(--text-2xl); font-weight: 700; }
h3 { font-size: var(--text-xl);  font-weight: 600; }
h4 { font-size: var(--text-lg);  font-weight: 600; }

p { margin-bottom: var(--space-md); }
strong { font-weight: 600; }

/* ---------- 4. Layout ---------- */

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

.section {
  padding-block: var(--space-3xl);
}

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

.section-header {
  margin-bottom: var(--space-2xl);
  text-align: center;
}

.section-header p {
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-top: var(--space-sm);
}

/* ---------- 5. Skip Link ---------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary-dark);
  color: #fff;
  z-index: 1000;
  border-radius: var(--border-radius);
}

.skip-link:focus {
  top: var(--space-md);
  color: #fff;
}

/* ---------- 6. Header & Navigation ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: var(--text-lg);
  color: var(--color-primary-dark);
}

.site-logo:hover { color: var(--color-primary); }

.site-logo svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.main-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.nav-linkedin {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-linkedin svg {
  width: 18px;
  height: 18px;
}

/* Mobile nav toggle */
.nav-toggle { display: none; }
.nav-toggle-label { display: none; }

/* ---------- 7. Footer ---------- */

.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
  padding-block: var(--space-3xl) var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .footer-tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-loose);
  margin-bottom: 0;
}

.site-footer h3 {
  color: #fff;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a,
.footer-social a {
  color: rgba(255,255,255,0.7);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-nav a:hover,
.footer-social a:hover {
  color: #fff;
}

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

.footer-social a svg {
  width: 24px;
  height: 24px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: var(--space-xl);
  font-size: var(--text-sm);
  opacity: 0.6;
}

.footer-bottom p { margin-bottom: 0; }

/* ---------- 8. Hero Section ---------- */

.hero {
  padding-block: var(--space-4xl);
  text-align: center;
}

.hero h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-xl);
}

.hero-illustration {
  max-width: 480px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

/* ---------- 9. Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn:active { transform: scale(0.98); }

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* ---------- 10. Project Cards ---------- */

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.project-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.project-card-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-md);
}

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

.project-card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background-color: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 100px;
}

.tag-accent {
  background-color: #E8D5BE;
  color: #7A5C3E;
}

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

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
}

.project-link:hover { color: var(--color-primary-dark); }

.project-link svg {
  width: 16px;
  height: 16px;
}

/* ---------- 11. Blog Cards / Listing ---------- */

.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: box-shadow var(--transition-base);
}

.blog-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.blog-card-meta {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.blog-card h3 {
  margin-bottom: var(--space-sm);
}

.blog-card h3 a {
  color: var(--color-primary-dark);
}

.blog-card h3 a:hover {
  color: var(--color-primary);
}

.blog-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-top: var(--space-sm);
}

/* ---------- 12. Blog Post (Article) ---------- */

.article-header {
  text-align: center;
  padding-block: var(--space-3xl) var(--space-xl);
}

.article-header h1 {
  max-width: var(--max-width-content);
  margin-inline: auto;
  margin-bottom: var(--space-md);
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  color: var(--color-text-light);
  font-size: var(--text-sm);
}

.article-hero-svg {
  max-width: 500px;
  margin: var(--space-xl) auto;
}

.article-content {
  max-width: var(--max-width-content);
  margin-inline: auto;
  padding-bottom: var(--space-3xl);
}

.article-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

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

.article-content p {
  line-height: var(--leading-loose);
}

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

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
  margin-bottom: var(--space-sm);
  line-height: var(--leading-normal);
}

.article-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: var(--space-md) var(--space-lg);
  margin-block: var(--space-lg);
  background-color: var(--color-bg-alt);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.article-content pre {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  margin-block: var(--space-lg);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 3px;
}

.article-content pre code {
  background: none;
  padding: 0;
}

.article-intro {
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: var(--leading-loose);
}

/* Article Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

/* Related Posts */
.related-posts {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background-color: var(--color-bg-alt);
  border-radius: var(--border-radius-lg);
}

.related-posts h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
}

.related-posts ul {
  list-style: none;
  padding-left: 0;
}

.related-posts li {
  margin-bottom: var(--space-sm);
}

.related-posts a {
  font-weight: 500;
}

/* ---------- 13. About Page ---------- */

.about-content {
  max-width: var(--max-width-content);
  margin-inline: auto;
}

.about-hero {
  text-align: center;
  padding-block: var(--space-3xl);
}

.about-hero h1 {
  margin-bottom: var(--space-md);
}

.about-hero p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.about-section {
  margin-bottom: var(--space-2xl);
}

.about-section h2 {
  margin-bottom: var(--space-md);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.skill-item {
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}

.skill-item h3 {
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.skill-item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* ---------- 14. CTA Banner ---------- */

.cta-banner {
  text-align: center;
  padding-block: var(--space-3xl);
  background-color: var(--color-primary-dark);
  color: #fff;
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-xl);
}

/* ---------- 15. 404 Page ---------- */

.not-found {
  text-align: center;
  padding-block: var(--space-4xl);
}

.not-found h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

/* ---------- 16. Focus & Accessibility ---------- */

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

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

/* ---------- 17. Responsive ---------- */

/* ≥576px — small tablets */
@media (min-width: 576px) {
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ≥768px — tablets */
@media (min-width: 768px) {
  .container { padding-inline: var(--space-xl); }
  h1 { font-size: var(--text-4xl); }
  .hero h1 { font-size: 3.5rem; }
  .blog-list { grid-template-columns: repeat(2, 1fr); }

  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* ≥1024px — desktops */
@media (min-width: 1024px) {
  .project-grid { grid-template-columns: repeat(3, 1fr); }
  .blog-list-home { grid-template-columns: repeat(3, 1fr); }
  .skills-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ≤768px — mobile nav */
@media (max-width: 768px) {
  .nav-toggle-label {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    align-items: center;
  }

  .hamburger,
  .hamburger::before,
  .hamburger::after {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base);
    position: relative;
  }

  .hamburger::before,
  .hamburger::after {
    content: '';
    position: absolute;
  }

  .hamburger::before { top: -7px; }
  .hamburger::after  { top: 7px; }

  .nav-toggle:checked ~ .nav-toggle-label .hamburger {
    background: transparent;
  }

  .nav-toggle:checked ~ .nav-toggle-label .hamburger::before {
    top: 0;
    transform: rotate(45deg);
  }

  .nav-toggle:checked ~ .nav-toggle-label .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    transform: translateY(-120%);
    transition: transform var(--transition-base);
    z-index: 99;
  }

  .nav-toggle:checked ~ .main-nav {
    transform: translateY(0);
  }

  .main-nav ul {
    flex-direction: column;
    gap: var(--space-md);
  }

  .main-nav a {
    font-size: var(--text-base);
    display: block;
    padding: var(--space-sm) 0;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero h1 { font-size: var(--text-3xl); }
}

/* ---------- 18. Print ---------- */

@media print {
  .site-header, .site-footer, .nav-toggle-label, .btn { display: none; }
  body { color: #000; background: #fff; }
  a { color: #000; text-decoration: underline; }
  .container { max-width: 100%; padding: 0; }
}