/*
 * Collins Kimani — Personal Portfolio
 * css/style.css
 *
 * Hand-crafted styles that complement Tailwind.
 * Tailwind handles spacing/layout; this file handles
 * character, typography details, and animation.
 */

/* ─── Page foundation ────────────────────────────── */

:root {
  --ivory:      #f5f2e9;
  --parchment:  #f4f1e8;
  --charcoal:   #252525;
  --muted:      #666666;
  --divider:    #d6d0c5;
  --link:       #0000cc;
  --visited:    #551a8b;
  --rust:       #8b3a0f;
  --forest:     #2d5a27;

  --text-base:  1rem;
  --text-sm:    0.875rem;
  --text-xs:    0.78rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--ivory);
  color: var(--charcoal);
}

/* ─── Visited link color ─────────────────────────── */

a:visited {
  color: var(--visited);
}

/* ─── Skip link ──────────────────────────────────── */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  padding: 0.25rem 0.75rem;
  background: var(--ivory);
  border: 1px solid var(--divider);
  color: var(--link);
  font-size: 0.85rem;
  text-decoration: underline;
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
}

/* ─── Page fade-in ───────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.45s ease-out both;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    animation: none;
  }
  * {
    transition-duration: 0.01ms !important;
    animation-duration:  0.01ms !important;
  }
}

/* ─── Blinking cursor (monospace detail) ─────────── */

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.cursor-blink {
  display: inline-block;
  animation: blink 1.1s step-end infinite;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.8em;
  color: var(--muted);
  margin-left: 1px;
}

@media (prefers-reduced-motion: reduce) {
  .cursor-blink {
    animation: none;
    opacity: 1;
  }
}

/* ─── Site navigation ────────────────────────────── */

.site-nav {
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--divider);
}

.site-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.5rem;
}

.site-nav__link {
  font-size: 0.9rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.12s ease;
  padding-bottom: 1px;
  border-bottom: 1px solid transparent;
}

.site-nav__link:hover {
  color: var(--charcoal);
  border-bottom-color: var(--divider);
}

.site-nav__link:visited {
  color: var(--muted);
}

.site-nav__link--active {
  color: var(--charcoal);
  border-bottom-color: var(--rust);
}

.site-nav__link:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 1px;
}

/* ─── Section headings ───────────────────────────── */

.section-heading {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--charcoal);
  margin-bottom: 1rem;
  border-left: 3px solid var(--rust);
  padding-left: 0.65rem;
}

/* ─── Section dividers ───────────────────────────── */

.section-divider {
  border: none;
  border-top: 1px solid var(--divider);
  margin: 0 0 2.25rem 0;
}

/* ─── Hyperlinks ─────────────────────────────────── */

.site-link {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.site-link:hover {
  color: var(--rust);
  text-decoration-color: var(--rust);
}

.site-link:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 1px;
}

/* ─── Project list ───────────────────────────────── */

.project-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.project-item {
  padding: 0.65rem 0;
  border-bottom: 1px dotted var(--divider);
  transition: background-color 0.15s ease;
}

.project-item:last-child {
  border-bottom: none;
}

.project-item:hover {
  background-color: rgba(139, 58, 15, 0.03);
}

.project-link {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-weight: normal;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 0.15s ease;
}

.project-link:visited {
  color: var(--visited);
}

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

.project-link:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 1px;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--charcoal);
  margin: 0.25rem 0 0.2rem 0;
  line-height: 1.65;
  max-width: 70ch;
}

.project-tech {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0;
}

/* ─── HTMX trigger button ────────────────────────── */

.htmx-trigger {
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 2px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: color 0.12s ease;
}

.htmx-trigger:hover {
  color: var(--link);
}

.htmx-trigger:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
  border-radius: 1px;
}

.htmx-indicator {
  display: none;
}

.htmx-request .htmx-indicator {
  display: inline;
}

/* ─── Engineering Foundations — skills grid ──────── */

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 560px) {
  .skills-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 2.5rem;
  }
}

.skill-group__heading {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.45rem;
  letter-spacing: 0.01em;
}

.skill-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-list li {
  font-size: 0.875rem;
  color: var(--charcoal);
  padding: 0.1rem 0;
  line-height: 1.55;
}

.skill-list li::before {
  content: "·";
  color: var(--rust);
  margin-right: 0.45rem;
  font-weight: bold;
}

/* ─── Engineering Notes index ────────────────────── */

.notes-category {
  margin-bottom: 1.4rem;
}

.notes-category__heading {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.4rem;
}

.notes-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.notes-list li {
  font-size: 0.9rem;
  padding: 0.15rem 0;
  line-height: 1.5;
}

.note-status {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.74rem;
  color: var(--muted);
  margin-left: 0.35rem;
}

.note-status--draft {
  font-style: italic;
  opacity: 0.75;
}

/* ─── Writing / notes list ───────────────────────── */

.writing-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.writing-item {
  padding: 0.3rem 0;
  font-size: 0.92rem;
}

.writing-meta {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.75rem;
  color: var(--muted);
  margin-left: 0.3rem;
}

/* ─── Elsewhere list ─────────────────────────────── */

.elsewhere-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.elsewhere-list li {
  font-size: 0.92rem;
  padding: 0.25rem 0;
  color: var(--charcoal);
}

/* ─── Profile photo ──────────────────────────────── */

.profile-photo {
  background-color: #e8e4d9;
  font-family: "Courier New", Courier, monospace;
}

/* ─── Note page layout ───────────────────────────── */

.note-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--divider);
}

.note-header__back {
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 0.75rem;
  transition: color 0.12s ease;
}

.note-header__back:hover {
  color: var(--link);
}

.note-header__title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.5rem;
  font-weight: normal;
  color: var(--charcoal);
  margin-bottom: 0.35rem;
}

.note-header__meta {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ─── Note body prose ────────────────────────────── */

.note-body {
  max-width: 68ch;
}

.note-body h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal);
  margin: 1.75rem 0 0.5rem 0;
  border-left: 3px solid var(--rust);
  padding-left: 0.6rem;
}

.note-body p {
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--charcoal);
  margin-bottom: 0.85rem;
}

.note-body ul,
.note-body ol {
  padding-left: 1.5rem;
  margin-bottom: 0.85rem;
}

.note-body li {
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--charcoal);
  margin-bottom: 0.2rem;
}

.note-body code {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.84em;
  background-color: rgba(0, 0, 0, 0.05);
  padding: 0.1em 0.35em;
  border-radius: 2px;
  color: var(--rust);
}

.note-body pre {
  background-color: #eceae3;
  border: 1px solid var(--divider);
  padding: 1rem 1.15rem;
  overflow-x: auto;
  margin-bottom: 1rem;
  border-radius: 2px;
}

.note-body pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: 0.83rem;
  color: var(--charcoal);
}

.note-body blockquote {
  border-left: 3px solid var(--divider);
  padding-left: 1rem;
  color: var(--muted);
  font-style: italic;
  font-size: 0.92rem;
  margin: 1rem 0;
}

.note-body strong {
  font-weight: 600;
  color: var(--charcoal);
}

/* ─── Full notes index page ──────────────────────── */

.notes-index-category {
  margin-bottom: 2rem;
}

.notes-index-category__heading {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 0.6rem;
  border-left: 3px solid var(--rust);
  padding-left: 0.6rem;
}

.notes-index-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.notes-index-list li {
  padding: 0.2rem 0;
  font-size: 0.9rem;
  border-bottom: 1px dotted var(--divider);
}

.notes-index-list li:last-child {
  border-bottom: none;
}

/* ─── About page ─────────────────────────────────── */

.about-body {
  max-width: 68ch;
}

.about-body p {
  font-size: 0.93rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: var(--charcoal);
}

.about-body ul {
  list-style: none;
  padding: 0;
  margin-bottom: 1rem;
}

.about-body ul li {
  font-size: 0.92rem;
  line-height: 1.7;
  padding: 0.1rem 0;
}

.about-body ul li::before {
  content: "—";
  color: var(--muted);
  margin-right: 0.5rem;
  font-family: Georgia, serif;
}

/* ─── Writing page ───────────────────────────────── */

.writing-entry {
  padding: 0.75rem 0;
  border-bottom: 1px dotted var(--divider);
}

.writing-entry:last-child {
  border-bottom: none;
}

.writing-entry__title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 0.12s ease;
}

.writing-entry__title:hover {
  color: var(--rust);
}

.writing-entry__meta {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0.15rem 0 0.3rem 0;
}

.writing-entry__desc {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 65ch;
}

/* ─── Focus styles (global safety net) ───────────── */

:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

/* ─── Screen reader utilities ────────────────────── */

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