/* ================================================================
   TUI Design System — heredia.fi
   Amber accent, JetBrains Mono, Dark terminal
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* ----------------------------------------------------------------
   Custom Properties
   ---------------------------------------------------------------- */
:root {
  --bg:        #0d0d0d;
  --bg-panel:  #141414;
  --fg:        #d4d4d4;
  --fg-dim:    #6b6b6b;
  --accent:    #ffb000;
  --border:    #2a2a2a;
  --selection: #264f78;
  --error:     #f44747;
  --green:     #02ae66;
  --mono:      'JetBrains Mono', 'IBM Plex Mono', 'Courier New', monospace;
}

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

html {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

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

a:hover {
  text-decoration: underline;
}

::selection {
  background: var(--selection);
  color: var(--fg);
}

/* ----------------------------------------------------------------
   Navigation — tab bar style (like tmux)
   ---------------------------------------------------------------- */
.tui-nav {
  height: 2rem;
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 0 1rem;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 50;
}

.tui-nav__brand {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  margin-right: 1.5rem;
  white-space: nowrap;
  user-select: none;
}

.tui-nav__tabs {
  list-style: none;
  display: flex;
  height: 100%;
}

.tui-nav__tab {
  display: flex;
  align-items: stretch;
}

.tui-nav__tab a {
  display: flex;
  align-items: center;
  height: 2rem;
  padding: 0 1rem;
  font-size: 0.78rem;
  color: var(--fg-dim);
  border-right: 1px solid var(--border);
  transition: color 0.12s, background 0.12s;
  white-space: nowrap;
}

.tui-nav__tab:first-child a {
  border-left: 1px solid var(--border);
}

.tui-nav__tab a:hover {
  color: var(--fg);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
}

.tui-nav__tab.active a {
  color: var(--accent);
  background: rgba(255, 176, 0, 0.06);
  border-bottom: 2px solid var(--accent);
}

/* ----------------------------------------------------------------
   Status Bar — fixed bottom strip
   ---------------------------------------------------------------- */
.tui-status {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1.5rem;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  z-index: 100;
  user-select: none;
}

.tui-status__left,
.tui-status__right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* ----------------------------------------------------------------
   Main Content Area
   ---------------------------------------------------------------- */
.tui-main {
  flex: 1;
  padding: 1.5rem;
  padding-bottom: calc(1.5rem + 1.5rem); /* clear status bar */
  overflow-y: auto;
}

/* Home page: vertically centered */
.home-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  padding-bottom: 3rem;
}

/* ----------------------------------------------------------------
   TUI Window / Panel
   ---------------------------------------------------------------- */
.tui-window {
  background: var(--bg-panel);
  border: 1px solid var(--border);
}

.tui-window__bar {
  display: flex;
  align-items: center;
  height: 1.75rem;
  padding: 0 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 0.76rem;
  gap: 0.5rem;
  overflow: hidden;
}

/* Traffic-light dots */
.dots {
  display: flex;
  gap: 0.3rem;
  flex-shrink: 0;
}

.dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--border);
}

.dot--red   { background: var(--error); }
.dot--amber { background: var(--accent); }
.dot--green { background: var(--green); }

.tui-window__bar .bar-title {
  flex: 1;
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.76rem;
}

.tui-window__bar .bar-title .hl {
  color: var(--accent);
}

.tui-window__body {
  padding: 1.25rem 1.5rem;
}

/* ----------------------------------------------------------------
   Cursor blink
   ---------------------------------------------------------------- */
.cursor {
  display: inline-block;
  width: 0.55ch;
  height: 1em;
  background: var(--accent);
  vertical-align: middle;
  margin-left: 1px;
  animation: blink 1.1s step-end infinite;
}

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

/* ----------------------------------------------------------------
   Home Splash
   ---------------------------------------------------------------- */
.splash-window {
  width: 100%;
  max-width: 660px;
}

.splash-code {
  font-size: 0.88rem;
  line-height: 1.9;
  white-space: pre-wrap;
  margin-bottom: 1.25rem;
}

/* Syntax token colours */
.c-kw  { color: var(--fg-dim); }
.c-id  { color: var(--fg); }
.c-str { color: var(--accent); }
.c-cm  { color: var(--fg-dim); font-style: italic; }

.splash-tagline {
  font-size: 0.82rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.splash-tagline::before {
  content: '// ';
}

.splash-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.splash-nav a {
  color: var(--fg-dim);
}

.splash-nav a:hover {
  color: var(--fg);
  text-decoration: none;
}

.key {
  color: var(--accent);
  font-weight: 700;
}

/* ----------------------------------------------------------------
   Page breadcrumb label
   ---------------------------------------------------------------- */
.page-label {
  font-size: 0.75rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.page-label span {
  color: var(--accent);
}

/* ----------------------------------------------------------------
   About Page
   ---------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  max-width: 1000px;
  margin: 0 auto;
}

.about-grid .full {
  grid-column: 1 / -1;
}

@media (max-width: 680px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-grid .full {
    grid-column: 1;
  }
}

.bio-text {
  font-size: 0.84rem;
  line-height: 1.85;
  color: var(--fg-dim);
}

.bio-text p + p {
  margin-top: 0.85rem;
}

/* Skills as file tree */
.file-tree {
  font-size: 0.82rem;
  line-height: 2;
}

.file-tree .dir {
  color: var(--accent);
  font-weight: 700;
}

.file-tree .item {
  color: var(--fg-dim);
  padding-left: 1.25rem;
}

.file-tree .item::before {
  content: '├── ';
  color: var(--border);
}

.file-tree .item:last-child::before {
  content: '└── ';
}

/* Neofetch-style system info */
.sysinfo {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(22ch, 1fr));
  gap: 0.3rem 2rem;
  font-size: 0.82rem;
}

.sysinfo-row {
  display: flex;
  gap: 0.75ch;
}

.sysinfo-row .k {
  color: var(--accent);
  font-weight: 700;
  min-width: 14ch;
  flex-shrink: 0;
}

.sysinfo-row .v {
  color: var(--fg-dim);
}

/* Contact form */
.tui-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.tui-form label {
  display: block;
  font-size: 0.76rem;
  color: var(--fg-dim);
  margin-bottom: 0.25rem;
}

.tui-form input,
.tui-form textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: var(--mono);
  font-size: 0.84rem;
  padding: 0.45rem 0.75rem;
  outline: none;
  border-radius: 0;
  transition: border-color 0.12s;
}

.tui-form input::placeholder,
.tui-form textarea::placeholder {
  color: var(--fg-dim);
  opacity: 0.5;
}

.tui-form input:focus,
.tui-form textarea:focus {
  border-color: var(--accent);
}

.tui-form textarea {
  height: 7rem;
  resize: vertical;
}

.tui-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  border: none;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.45rem 1.5rem;
  cursor: pointer;
  transition: opacity 0.12s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tui-btn:hover {
  opacity: 0.82;
}

/* ----------------------------------------------------------------
   Projects Page
   ---------------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 1.25rem;
  max-width: 1100px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s;
}

.project-card:hover {
  border-color: var(--fg-dim);
}

.project-card__bar {
  display: flex;
  align-items: center;
  height: 1.75rem;
  padding: 0 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 0.76rem;
  gap: 0.5rem;
}

.project-card__bar .name {
  flex: 1;
  text-align: center;
  color: var(--fg);
  font-weight: 700;
}

.project-card__body {
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.project-card__desc {
  font-size: 0.82rem;
  color: var(--fg-dim);
  line-height: 1.75;
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tag {
  font-size: 0.72rem;
  color: var(--fg-dim);
  border: 1px solid var(--border);
  padding: 0.05rem 0.5rem;
}

.tag--accent {
  color: var(--accent);
  border-color: rgba(255, 176, 0, 0.35);
}

.project-card__links {
  display: flex;
  gap: 1.25rem;
  font-size: 0.82rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border);
}

.project-card__links a {
  color: var(--accent);
}

.project-card__links a:hover {
  text-decoration: underline;
}

/* ----------------------------------------------------------------
   Blog — post listing (ls -la aesthetic)
   ---------------------------------------------------------------- */
.post-listing {
  display: flex;
  flex-direction: column;
}

.post-listing-header {
  display: grid;
  grid-template-columns: 11ch 1fr;
  gap: 1.5rem;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--fg-dim);
  margin-bottom: 0.1rem;
}

.post-row {
  display: grid;
  grid-template-columns: 11ch 1fr;
  gap: 1.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: baseline;
  color: inherit;
  font-size: 0.84rem;
  transition: background 0.1s;
}

.post-row:hover {
  background: rgba(255, 176, 0, 0.04);
  text-decoration: none;
}

.post-row:hover .post-title {
  color: var(--accent);
}

.post-date {
  color: var(--fg-dim);
  font-size: 0.78rem;
  white-space: nowrap;
}

.post-title {
  color: var(--fg);
  transition: color 0.1s;
}

/* ----------------------------------------------------------------
   Blog — individual post prose
   ---------------------------------------------------------------- */
.post-meta {
  font-size: 0.76rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 1.5rem;
}

.post-meta .k {
  color: var(--accent);
  font-weight: 700;
}

.post-meta .v {
  color: var(--fg-dim);
}

.post-nav {
  margin-top: 2rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
}

/* Rendered markdown content */
.prose {
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--fg-dim);
}

.prose p {
  margin-bottom: 1rem;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  color: var(--fg);
  font-weight: 700;
  margin: 1.75rem 0 0.5rem;
  line-height: 1.3;
}

.prose h1::before { content: '#  '; color: var(--accent); }
.prose h2::before { content: '## '; color: var(--accent); }
.prose h3::before { content: '###'; color: var(--accent); }
.prose h4::before { content: '####'; color: var(--accent); }

.prose h1 { font-size: 1.05rem; }
.prose h2 { font-size: 0.96rem; }
.prose h3 { font-size: 0.9rem; }
.prose h4 { font-size: 0.88rem; }

.prose code {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.1rem 0.35rem;
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--accent);
}

.prose pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  font-size: 0.82rem;
  line-height: 1.6;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--fg);
  font-size: inherit;
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 1rem;
  margin: 1rem 0;
  color: var(--fg-dim);
  font-style: italic;
}

.prose blockquote p {
  margin: 0;
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.prose li {
  margin-bottom: 0.3rem;
}

.prose ul li::marker {
  content: '› ';
  color: var(--accent);
}

.prose ol li::marker {
  color: var(--accent);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.75rem 0;
}

.prose strong {
  color: var(--fg);
  font-weight: 700;
}

.prose em {
  font-style: italic;
}

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

.prose a:hover {
  text-decoration: underline;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.82rem;
  margin: 1rem 0;
}

.prose th,
.prose td {
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  text-align: left;
}

.prose th {
  background: var(--bg);
  color: var(--accent);
}

.prose img {
  max-width: 100%;
  height: auto;
}

/* ----------------------------------------------------------------
   Sidebar layout (projects page + individual project pages)
   ---------------------------------------------------------------- */
.tui-layout {
  display: flex;
  flex: 1;
  align-items: flex-start; /* required for sticky sidebar */
}

.tui-sidebar {
  width: 210px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--bg-panel);
  position: sticky;
  top: 2rem; /* flush below the nav bar */
  height: calc(100vh - 2rem - 1.5rem); /* viewport minus nav and status bar */
  overflow-y: auto;
}

.tui-sidebar__bar {
  height: 1.75rem;
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 0.68rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
  user-select: none;
}

/* File explorer tree */
.explorer {
  padding: 0.5rem 0;
}

.explorer__dir {
  display: block;
  padding: 0.3rem 0.75rem;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.1s;
}

.explorer__dir:hover {
  opacity: 0.75;
  text-decoration: none;
}

.explorer__file {
  display: flex;
  align-items: center;
  padding: 0.28rem 0.75rem;
  font-size: 0.76rem;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 0.1s, background 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.explorer__file::before {
  content: '├── ';
  color: var(--border);
  flex-shrink: 0;
  font-size: 0.72rem;
}

.explorer__file:last-child::before {
  content: '└── ';
}

.explorer__file:hover {
  background: rgba(255, 176, 0, 0.05);
  color: var(--fg);
  text-decoration: none;
}

.explorer__file.active {
  color: var(--accent);
  background: rgba(255, 176, 0, 0.08);
}

.explorer__file.active::before {
  color: var(--accent);
}

/* Main content area when sidebar is present */
.tui-layout__main {
  flex: 1;
  padding: 1.5rem;
  padding-bottom: 3rem;
  min-width: 0; /* prevent flex blowout on narrow screens */
}

/* Mobile: sidebar becomes a horizontal strip */
@media (max-width: 620px) {
  .tui-layout {
    flex-direction: column;
  }

  .tui-sidebar {
    width: 100%;
    position: static;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .explorer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.1rem;
    padding: 0.35rem 0.5rem;
  }

  .explorer__dir {
    padding: 0.2rem 0.5rem;
    margin-right: 0.5rem;
  }

  .explorer__file {
    padding: 0.2rem 0.5rem;
  }

  .explorer__file::before,
  .explorer__file:last-child::before {
    content: '-  ';
    color: var(--border);
  }
}

/* ----------------------------------------------------------------
   Project detail page
   ---------------------------------------------------------------- */
.project-detail {
  max-width: 780px;
}

.project-detail__meta {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.project-detail__section {
  margin-bottom: 1.5rem;
}

.project-detail__section h2 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--fg-dim);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.project-detail__section h2::before {
  content: '##';
  color: var(--accent);
}

.project-detail__section p {
  font-size: 0.84rem;
  line-height: 1.85;
  color: var(--fg-dim);
  margin-bottom: 0.75rem;
}

.project-detail__links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.84rem;
  margin-top: 1.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.project-detail__links a {
  color: var(--accent);
}

.project-detail__links a:hover {
  text-decoration: underline;
}

/* ----------------------------------------------------------------
   Utility classes
   ---------------------------------------------------------------- */
.dim    { color: var(--fg-dim); }
.accent { color: var(--accent); }
.bold   { font-weight: 700; }

/* ----------------------------------------------------------------
   Responsive tweaks
   ---------------------------------------------------------------- */
@media (max-width: 480px) {
  .tui-nav__brand {
    display: none;
  }

  .tui-status__right {
    display: none;
  }

  .tui-window__body {
    padding: 1rem;
  }
}