/*
Theme Name: Applied Learning Terminal
Theme URI: https://example.com/applied-learning-terminal
Author: Applied Learning Terminal
Author URI: https://example.com
Description: A phosphor-terminal WordPress theme for field notes on learning, maritime workforce education, applied research, technology, and R&D.
Version: 1.0.0
Requires at least: 6.4
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: applied-learning-terminal
Tags: blog, education, dark, one-column, two-columns, custom-menu, featured-images, accessibility-ready
*/

:root {
  --alt-bg: #020905;
  --alt-panel: #06120a;
  --alt-panel-strong: #091b0e;
  --alt-text: #b9ff9e;
  --alt-bright: #e0ffd2;
  --alt-muted: #7cb66c;
  --alt-dim: #426b3b;
  --alt-line: rgba(145, 255, 111, 0.24);
  --alt-line-strong: rgba(166, 255, 138, 0.56);
  --alt-alert: #ffd27d;
  --alt-danger: #ff8e78;
  --alt-shadow: 0 0 28px rgba(92, 255, 76, 0.08);
  --alt-max: 1260px;
  --alt-reading: 760px;
  --alt-radius: 2px;
  --alt-mono: "IBM Plex Mono", "Cascadia Mono", "SFMono-Regular", Consolas,
    "Liberation Mono", monospace;
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(81, 187, 63, 0.13), transparent 38rem),
    linear-gradient(180deg, #020805 0%, var(--alt-bg) 72%);
  color: var(--alt-text);
  font-family: var(--alt-mono);
  font-size: 16px;
  line-height: 1.7;
  text-shadow: 0 0 10px rgba(160, 255, 131, 0.16);
}

body::before {
  position: fixed;
  z-index: 1000;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.17) 50%),
    linear-gradient(90deg, rgba(255, 0, 0, 0.012), rgba(0, 255, 0, 0.008), rgba(0, 0, 255, 0.012));
  background-size: 100% 4px, 6px 100%;
  opacity: 0.56;
}

body::after {
  position: fixed;
  z-index: 999;
  inset: 0;
  pointer-events: none;
  content: "";
  box-shadow:
    inset 0 0 90px rgba(0, 0, 0, 0.9),
    inset 0 0 18px rgba(133, 255, 103, 0.06);
}

::selection {
  color: var(--alt-bg);
  background: var(--alt-bright);
  text-shadow: none;
}

a {
  color: var(--alt-bright);
  text-decoration-color: var(--alt-dim);
  text-underline-offset: 0.23em;
}

a:hover {
  text-decoration-color: currentColor;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--alt-bright);
  outline-offset: 4px;
  box-shadow: 0 0 0 6px rgba(144, 255, 113, 0.12);
}

img {
  max-width: 100%;
  height: auto;
  filter: grayscale(1) sepia(0.45) hue-rotate(58deg) saturate(1.35) contrast(1.05);
}

hr {
  height: 1px;
  margin: 2.2rem 0;
  border: 0;
  background: var(--alt-line);
}

.screen-reader-text {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.screen-reader-text:focus {
  z-index: 100000;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  padding: 0.8rem 1rem;
  clip: auto;
  color: var(--alt-bg);
  background: var(--alt-bright);
}

.alt-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), var(--alt-max));
  margin: 0 auto;
}

.alt-kicker,
.alt-code,
.alt-eyebrow,
.alt-meta,
.alt-status,
.alt-command {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.73rem;
  font-weight: 700;
}

.alt-kicker,
.alt-eyebrow,
.alt-meta {
  color: var(--alt-muted);
}

.alt-code,
.alt-command {
  color: var(--alt-alert);
}

.alt-site-header {
  border-bottom: 1px solid var(--alt-line);
  background: rgba(2, 9, 5, 0.9);
}

.alt-statusbar {
  border-bottom: 1px solid var(--alt-line);
  color: var(--alt-muted);
  background: rgba(95, 207, 75, 0.04);
}

.alt-statusbar .alt-shell {
  display: flex;
  min-height: 2rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.alt-status {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.2rem;
}

.alt-status strong {
  color: var(--alt-bright);
}

.alt-header-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem 2rem;
  align-items: end;
  min-height: 7.6rem;
  padding: 1.25rem 0;
}

.alt-brand {
  display: inline-block;
  color: var(--alt-bright);
  text-decoration: none;
}

.alt-brand-mark {
  display: block;
  margin-bottom: 0.32rem;
  color: var(--alt-alert);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
}

.alt-brand-name {
  display: block;
  max-width: 18ch;
  font-size: clamp(1.25rem, 4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.alt-brand-description {
  max-width: 58ch;
  margin: 0.55rem 0 0;
  color: var(--alt-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.alt-menu-toggle {
  display: none;
  min-height: 2.75rem;
  border: 1px solid var(--alt-line-strong);
  border-radius: var(--alt-radius);
  padding: 0.55rem 0.8rem;
  color: var(--alt-bright);
  background: transparent;
  font: inherit;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.alt-nav {
  grid-column: 1 / -1;
  border-top: 1px solid var(--alt-line);
  padding-top: 0.9rem;
}

.alt-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.35rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.alt-nav a {
  color: var(--alt-muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.alt-nav a::before {
  content: "./";
  color: var(--alt-dim);
}

.alt-nav a:hover,
.alt-nav .current-menu-item > a,
.alt-nav .current-cat > a {
  color: var(--alt-bright);
}

.alt-main {
  padding: clamp(2rem, 5vw, 4.5rem) 0 5rem;
}

.alt-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(16rem, 0.65fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(1.25rem, 4vw, 3.6rem) 0 clamp(2.5rem, 7vw, 5.5rem);
  border-bottom: 1px solid var(--alt-line);
}

.alt-hero h1,
.alt-archive-header h1,
.alt-entry-header h1 {
  max-width: 14ch;
  margin: 0.45rem 0 1.2rem;
  color: var(--alt-bright);
  font-size: clamp(2rem, 7vw, 5.7rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
  text-wrap: balance;
}

.alt-hero p {
  max-width: 63ch;
  margin: 0;
  color: var(--alt-muted);
  font-size: clamp(0.96rem, 1.7vw, 1.12rem);
}

.alt-prompt {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--alt-bright);
}

.alt-prompt::after {
  display: inline-block;
  width: 0.65ch;
  height: 1.05em;
  margin-left: 0.35ch;
  vertical-align: -0.16em;
  content: "";
  background: var(--alt-bright);
  animation: alt-blink 1.05s steps(1, end) infinite;
}

@keyframes alt-blink {
  50% {
    opacity: 0;
  }
}

.alt-telemetry {
  align-self: end;
  border: 1px solid var(--alt-line);
  padding: 1rem;
  background: rgba(103, 255, 78, 0.025);
  box-shadow: var(--alt-shadow);
}

.alt-telemetry dl {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.55rem 1rem;
  margin: 0;
  font-size: 0.78rem;
}

.alt-telemetry dt {
  color: var(--alt-muted);
}

.alt-telemetry dd {
  margin: 0;
  color: var(--alt-bright);
  font-weight: 700;
}

.alt-section {
  padding: clamp(2.6rem, 6vw, 5rem) 0 0;
}

.alt-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.alt-section-head h2 {
  margin: 0;
  color: var(--alt-bright);
  font-size: clamp(1.15rem, 2.5vw, 1.65rem);
  letter-spacing: -0.025em;
}

.alt-section-head p {
  max-width: 45ch;
  margin: 0;
  color: var(--alt-muted);
  font-size: 0.8rem;
}

.alt-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.alt-card {
  position: relative;
  display: flex;
  min-height: 24rem;
  flex-direction: column;
  border: 1px solid var(--alt-line);
  padding: 1.2rem;
  background:
    linear-gradient(135deg, rgba(130, 255, 96, 0.045), transparent 42%),
    rgba(4, 16, 8, 0.76);
  box-shadow: var(--alt-shadow);
  transition:
    border-color 150ms ease,
    transform 150ms ease,
    background-color 150ms ease;
}

.alt-card:hover {
  border-color: var(--alt-line-strong);
  background-color: rgba(9, 28, 14, 0.95);
  transform: translateY(-2px);
}

.alt-card::before,
.alt-telemetry::before {
  position: absolute;
  top: 0.42rem;
  right: 0.42rem;
  width: 0.34rem;
  height: 0.34rem;
  content: "";
  background: var(--alt-muted);
  box-shadow: 0 0 9px rgba(143, 255, 108, 0.72);
}

.alt-card h2,
.alt-card h3 {
  margin: 1.15rem 0 0.9rem;
  color: var(--alt-bright);
  font-size: clamp(1.16rem, 2vw, 1.48rem);
  line-height: 1.22;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.alt-card h2 a,
.alt-card h3 a {
  color: inherit;
  text-decoration: none;
}

.alt-card p {
  margin: 0 0 1.25rem;
  color: var(--alt-muted);
  font-size: 0.9rem;
}

.alt-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  border-top: 1px solid var(--alt-line);
  padding-top: 0.85rem;
}

.alt-card-link {
  color: var(--alt-bright);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.alt-card-link::before {
  content: "> ";
  color: var(--alt-alert);
}

.alt-category-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--alt-line);
  background: var(--alt-line);
}

.alt-category {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  min-height: 7.5rem;
  padding: 1.1rem;
  color: var(--alt-text);
  background: var(--alt-bg);
  text-decoration: none;
}

.alt-category:hover {
  background: var(--alt-panel-strong);
}

.alt-category-index {
  color: var(--alt-alert);
  font-size: 0.75rem;
}

.alt-category strong {
  display: block;
  color: var(--alt-bright);
}

.alt-category span {
  display: block;
  color: var(--alt-muted);
  font-size: 0.78rem;
}

.alt-category-count {
  color: var(--alt-bright) !important;
  font-size: 1.25rem !important;
}

.alt-archive-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.45fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--alt-line);
  padding-bottom: 2rem;
}

.alt-archive-header h1 {
  max-width: 16ch;
  font-size: clamp(2rem, 6vw, 4.5rem);
}

.alt-archive-description {
  color: var(--alt-muted);
  font-size: 0.9rem;
}

.alt-entry-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--alt-reading)) minmax(14rem, 1fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: start;
}

.alt-entry-header {
  margin-bottom: 2.25rem;
}

.alt-entry-header h1 {
  max-width: 18ch;
  font-size: clamp(2rem, 6vw, 4.7rem);
}

.alt-entry-deck {
  max-width: 62ch;
  color: var(--alt-muted);
  font-size: clamp(1rem, 2vw, 1.18rem);
}

.alt-entry-content {
  color: #c6fbb4;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.82;
  text-shadow: none;
}

.alt-entry-content > * {
  max-width: var(--alt-reading);
}

.alt-entry-content h2,
.alt-entry-content h3 {
  color: var(--alt-bright);
  font-family: var(--alt-mono);
  line-height: 1.18;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.alt-entry-content h2 {
  margin: 3.2rem 0 1rem;
  border-top: 1px solid var(--alt-line);
  padding-top: 1.1rem;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.alt-entry-content h2::before {
  content: "// ";
  color: var(--alt-alert);
}

.alt-entry-content h3 {
  margin-top: 2.3rem;
  font-size: 1.25rem;
}

.alt-entry-content p,
.alt-entry-content li {
  max-width: 70ch;
}

.alt-entry-content li + li {
  margin-top: 0.72rem;
}

.alt-entry-content blockquote {
  margin: 2rem 0;
  border-left: 3px solid var(--alt-alert);
  padding: 0.8rem 1.2rem;
  color: var(--alt-bright);
  background: rgba(255, 210, 125, 0.05);
}

.alt-entry-content code,
.alt-entry-content pre {
  font-family: var(--alt-mono);
}

.alt-entry-content code {
  border: 1px solid var(--alt-line);
  padding: 0.08em 0.28em;
  color: var(--alt-bright);
  background: var(--alt-panel);
}

.alt-entry-content pre {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--alt-line);
  padding: 1rem;
  background: var(--alt-panel);
}

.alt-entry-content pre code {
  border: 0;
  padding: 0;
}

.alt-entry-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.alt-entry-content th,
.alt-entry-content td {
  border: 1px solid var(--alt-line);
  padding: 0.65rem;
  text-align: left;
}

.alt-entry-aside {
  position: sticky;
  top: 1.5rem;
  border-left: 1px solid var(--alt-line);
  padding-left: 1.2rem;
}

.alt-entry-aside h2 {
  margin: 0 0 1rem;
  color: var(--alt-bright);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.alt-entry-aside dl {
  margin: 0;
  font-size: 0.78rem;
}

.alt-entry-aside dt {
  margin-top: 0.8rem;
  color: var(--alt-muted);
}

.alt-entry-aside dd {
  margin: 0.12rem 0 0;
  color: var(--alt-bright);
}

.alt-post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3.5rem;
}

.alt-post-nav a {
  display: block;
  min-height: 5rem;
  border: 1px solid var(--alt-line);
  padding: 0.85rem;
  text-decoration: none;
}

.alt-post-nav a:hover {
  border-color: var(--alt-line-strong);
  background: var(--alt-panel);
}

.alt-pagination {
  margin-top: 2rem;
}

.alt-pagination .nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.alt-pagination a,
.alt-pagination span {
  display: grid;
  min-width: 2.6rem;
  min-height: 2.6rem;
  place-items: center;
  border: 1px solid var(--alt-line);
  padding: 0.35rem;
  text-decoration: none;
}

.alt-pagination .current {
  color: var(--alt-bg);
  background: var(--alt-bright);
}

.alt-search-form {
  display: grid;
  grid-template-columns: 1fr auto;
  max-width: 46rem;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.alt-search-form input {
  min-width: 0;
  min-height: 3rem;
  border: 1px solid var(--alt-line-strong);
  border-radius: 0;
  padding: 0.6rem 0.75rem;
  color: var(--alt-bright);
  background: var(--alt-panel);
  font: inherit;
}

.alt-search-form button {
  min-height: 3rem;
  border: 1px solid var(--alt-bright);
  border-radius: 0;
  padding: 0.6rem 1rem;
  color: var(--alt-bg);
  background: var(--alt-bright);
  font: inherit;
  font-weight: 800;
  text-transform: uppercase;
}

.alt-site-footer {
  border-top: 1px solid var(--alt-line);
  padding: 2rem 0 3rem;
  color: var(--alt-muted);
  background: rgba(2, 9, 5, 0.9);
  font-size: 0.75rem;
}

.alt-footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.5rem;
}

.alt-site-footer p {
  margin: 0;
}

.alt-empty {
  border: 1px solid var(--alt-line);
  padding: clamp(1.25rem, 4vw, 2.5rem);
  background: var(--alt-panel);
}

@media (max-width: 940px) {
  .alt-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .alt-entry-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .alt-entry-aside {
    position: static;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 1rem;
    border-top: 1px solid var(--alt-line);
    border-left: 0;
    padding-top: 1rem;
    padding-left: 0;
  }
}

@media (max-width: 720px) {
  .alt-shell {
    width: min(calc(100% - 1.25rem), var(--alt-max));
  }

  .alt-statusbar .alt-shell,
  .alt-section-head,
  .alt-footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }

  .alt-header-main {
    grid-template-columns: 1fr auto;
    align-items: center;
    min-height: auto;
  }

  .alt-brand-description {
    display: none;
  }

  .alt-menu-toggle {
    display: inline-block;
  }

  .alt-nav {
    display: none;
  }

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

  .alt-nav ul {
    display: grid;
    grid-template-columns: 1fr;
  }

  .alt-nav a {
    display: block;
    min-height: 2.8rem;
    padding: 0.55rem 0;
  }

  .alt-hero,
  .alt-archive-header {
    grid-template-columns: 1fr;
  }

  .alt-grid,
  .alt-category-map {
    grid-template-columns: 1fr;
  }

  .alt-card {
    min-height: 20rem;
  }

  .alt-post-nav {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 440px) {
  .alt-statusbar {
    display: none;
  }

  .alt-search-form {
    grid-template-columns: 1fr;
  }

  .alt-category {
    grid-template-columns: auto 1fr;
  }

  .alt-category-count {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    color: #111;
    background: #fff;
    text-shadow: none;
  }

  body::before,
  body::after,
  .alt-statusbar,
  .alt-nav,
  .alt-menu-toggle,
  .alt-entry-aside,
  .alt-site-footer {
    display: none;
  }

  .alt-shell,
  .alt-entry-content > * {
    width: 100%;
    max-width: none;
  }

  a {
    color: #111;
  }
}