/* ============================================================
   Leonard Law Portfolio — style.css
   ============================================================ */

/* 1. Reset
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* 2. Custom Properties
   ============================================================ */
:root {
  --color-bg:         #f4f6f9;
  --color-surface:    #ffffff;
  --color-text:       #1a2233;
  --color-text-muted: #5a6478;
  --color-accent:     #2563eb;
  --color-accent-light: rgba(37, 99, 235, 0.10);
  --color-border:     #d1d9e6;

  --font-heading: 'Lora', Georgia, serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;

  --container-width: 1100px;
  --nav-height: 64px;
  --radius: 8px;
  --transition: 200ms ease;
}

/* 3. Base Styles
   ============================================================ */
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.2rem; }

p {
  color: var(--color-text-muted);
  max-width: 65ch;
}

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

a:hover {
  color: var(--color-text);
}

/* 4. Layout Utilities
   ============================================================ */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-2xl) 0;
}

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

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* 5. Buttons
   ============================================================ */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #fff;
  border: 2px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #a86930;
  border-color: #a86930;
  color: #fff;
}

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

.btn-secondary:hover {
  background-color: var(--color-accent);
  color: #fff;
}

/* 6. Navigation
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.nav-logo:hover {
  color: var(--color-accent);
}

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* 7. Hero Section
   ============================================================ */
.hero {
  padding: var(--space-2xl) 0;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
}

.hero-content {
  max-width: 700px;
}

.hero-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.hero-title {
  margin-bottom: var(--space-sm);
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  max-width: 55ch;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* 8. About Section
   ============================================================ */
.about-grid {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
}

.about-photo {
  flex-shrink: 0;
}

.about-photo img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 4px solid var(--color-border);
  object-fit: cover;
}

.about-bio h2 {
  margin-bottom: var(--space-sm);
}

.about-bio p {
  margin-bottom: var(--space-sm);
  max-width: 60ch;
}

.about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.about-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.about-meta-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* 9. Cards (Shared)
   ============================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.10);
  transform: translateY(-2px);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.card-description,
.card-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-sm);
}

.tag {
  display: inline-block;
  background: var(--color-accent-light);
  color: var(--color-accent);
  border-radius: 999px;
  padding: 2px 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.card-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.card-link:hover {
  color: var(--color-text);
}

.card-date {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 10. Projects Section
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* 11. Blog Section
   ============================================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.blog-card .card-title a {
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-heading);
}

.blog-card .card-title a:hover {
  color: var(--color-accent);
}

/* 12. Contact Section
   ============================================================ */
.contact-content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.contact-content h2 {
  margin-bottom: var(--space-sm);
}

.contact-content p {
  margin: 0 auto var(--space-lg);
  max-width: 50ch;
}

.contact-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.contact-email {
  display: block;
  margin-top: var(--space-md);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* 13. Footer
   ============================================================ */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-md) 0;
  text-align: center;
}

.footer p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  max-width: none;
  margin: 0 auto;
}

/* 14. Blog Post Page
   ============================================================ */
.post-main {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.post-article {
  max-width: 720px;
  margin: 0 auto;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: var(--space-lg);
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--color-accent);
}

.post-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.post-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: var(--space-sm) 0;
}

.post-meta {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.post-meta time {
  font-weight: 500;
}

.post-meta-divider {
  color: var(--color-border);
}

.post-body {
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-body p {
  max-width: none;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.post-body h2 {
  font-size: 1.4rem;
  margin: var(--space-lg) 0 var(--space-sm);
}

.post-body h3 {
  font-size: 1.15rem;
  margin: var(--space-md) 0 var(--space-xs);
}

.post-body ul, .post-body ol {
  padding-left: var(--space-md);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.post-body li {
  margin-bottom: var(--space-xs);
}

.post-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
  margin: var(--space-md) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.post-body code {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.9em;
  font-family: 'Courier New', monospace;
}

.post-body pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

.post-body pre code {
  background: none;
  border: none;
  padding: 0;
}

/* 15. Responsive — Tablet (≤768px)
   ============================================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  /* Nav */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) 0;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    border-bottom: none;
  }

  .nav-links a:hover,
  .nav-links a.active {
    background-color: var(--color-accent-light);
    border-bottom: none;
    color: var(--color-accent);
  }

  /* Hero */
  .hero {
    min-height: auto;
    padding: var(--space-xl) 0;
  }

  /* About */
  .about-grid {
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
  }

  .about-bio p {
    max-width: none;
    margin-left: auto;
    margin-right: auto;
  }

  .about-meta {
    justify-content: center;
  }

  /* Grids */
  .projects-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* 16. Responsive — Mobile (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
  }

  .about-photo img {
    width: 160px;
    height: 160px;
  }

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