/*
* Base Stylesheet
* Minimal layout with CSS variables for theming
*/

/* Page Layout
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.site-header,
#main,
.site-footer {
  max-width: 52rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

@media (min-width: 550px) {
  .site-header,
  #main,
  .site-footer {
    padding-inline: 2rem;
  }
}


/* Base Styles
–––––––––––––––––––––––––––––––––––––––––––––––––– */
html {
  font-size: 62.5%;
  box-sizing: border-box;
}

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

body {
  font-size: 1.5em;
  line-height: 1.6;
  font-weight: 400;
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  margin: 0;
  padding: 0;
}

/* Noise texture overlay */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
  z-index: 9999;
}


/* Typography
–––––––––––––––––––––––––––––––––––––––––––––––––– */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: 2rem;
  font-weight: 500;
  color: var(--heading-color);
  background-color: var(--heading-bg);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

h1 {
  font-family: var(--font-h1);
  font-size: 4.0rem;
  line-height: 1.2;
  letter-spacing: 0.1em;
  background-color: transparent;
}

h2 {
  font-family: var(--font-heading);
  font-size: 3.6rem;
  line-height: 1.25;
}

h3, h4, h5, h6 {
  text-align: right;
}

h3 {
  font-family: var(--font-heading);
  font-size: 3.0rem;
  line-height: 1.3;
}

h4 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  line-height: 1.35;
}

h5 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  line-height: 1.5;
}

h6 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  line-height: 1.6;
}

@media (min-width: 550px) {
  h1 { font-size: 5.0rem; }
  h2 { font-size: 4.2rem; }
  h3 { font-size: 3.6rem; }
  h4 { font-size: 3.0rem; }
  h5 { font-size: 2.4rem; }
  h6 { font-size: 1.5rem; }
}

p {
  margin-top: 0;
  color: var(--text-body);
}

small {
  font-size: 0.707em;
}

blockquote {
  margin: 1.5rem 0 2.5rem;
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-primary);
  padding: 1em 1.33em;
  background-color: var(--blockquote-bg);
  color: var(--text-body);
  font-style: italic;
  position: relative;
}

blockquote::before {
  content: "※";
  position: absolute;
  top: -0.6em;
  left: 1em;
  background: var(--bg-primary);
  padding: 0 0.5em;
  color: var(--accent-primary);
  font-style: normal;
}

blockquote > p {
  margin-bottom: 0.5rem;
}


/* Links
–––––––––––––––––––––––––––––––––––––––––––––––––– */
a {
  color: var(--accent-primary, #0000EE);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-primary, #0000EE);
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  color: var(--link-hover, #551A8B);
  border-bottom-color: var(--link-hover, #551A8B);
}

a:focus-visible {
  outline: 2px solid var(--focus-color, #000);
  outline-offset: 2px;
}

*:focus,
*:focus-visible {
  outline: 2px solid var(--focus-color, #000);
  outline-offset: 2px;
}


/* Buttons
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.button,
button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
  display: inline-block;
  min-height: 44px;
  padding: 0 30px;
  color: var(--text-primary);
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  line-height: 44px;
  letter-spacing: .1rem;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  cursor: pointer;
  box-sizing: border-box;
}

.button:hover,
button:hover,
input[type="submit"]:hover,
input[type="reset"]:hover,
input[type="button"]:hover,
.button:focus,
button:focus,
input[type="submit"]:focus,
input[type="reset"]:focus,
input[type="button"]:focus {
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  outline: 0;
}

.button.button-primary,
button.button-primary,
input[type="submit"].button-primary,
input[type="reset"].button-primary,
input[type="button"].button-primary {
  color: var(--bg-primary);
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.button.button-primary:hover,
button.button-primary:hover,
input[type="submit"].button-primary:hover,
input[type="reset"].button-primary:hover,
input[type="button"].button-primary:hover,
.button.button-primary:focus,
button.button-primary:focus,
input[type="submit"].button-primary:focus,
input[type="reset"].button-primary:focus,
input[type="button"].button-primary:focus {
  color: var(--bg-primary);
  background-color: var(--link-hover);
  border-color: var(--link-hover);
}


/* Forms
–––––––––––––––––––––––––––––––––––––––––––––––––– */
input[type="email"],
input[type="number"],
input[type="search"],
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="password"],
textarea,
select {
  height: 38px;
  padding: 6px 10px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  box-shadow: none;
  box-sizing: border-box;
}

input[type="email"],
input[type="number"],
input[type="search"],
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="password"],
textarea {
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
}

textarea {
  min-height: 65px;
  padding-top: 6px;
  padding-bottom: 6px;
}

input[type="email"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="text"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
  border: 1px solid var(--accent-primary);
  outline: 0;
}

label,
legend {
  display: block;
  margin-bottom: .5rem;
  font-weight: 600;
}

fieldset {
  padding: 0;
  border-width: 0;
}

input[type="checkbox"],
input[type="radio"] {
  display: inline;
}

label > .label-body {
  display: inline-block;
  margin-left: .5rem;
  font-weight: normal;
}


/* Lists
–––––––––––––––––––––––––––––––––––––––––––––––––– */
ul { list-style: circle inside; }
ol { list-style: decimal inside; }

ol, ul {
  padding-left: 0;
  margin-top: 0;
  color: var(--text-body);
}

ul ul,
ul ol,
ol ol,
ol ul {
  margin: 1.5rem 0 1.5rem 3rem;
  font-size: 90%;
}

li {
  margin-bottom: 1rem;
}


/* Code
–––––––––––––––––––––––––––––––––––––––––––––––––– */
code {
  padding: .2rem .5rem;
  margin: 0 .2rem;
  font-size: 90%;
  white-space: nowrap;
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-code);
}

pre > code {
  display: block;
  padding: 1rem 1.5rem;
  white-space: pre;
  overflow-x: auto;
}

pre {
  background-color: var(--code-bg);
  border-left: 3px solid var(--accent-highlight);
  margin-bottom: 2.5rem;
  position: relative;
}

pre .code-toolbar {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  display: flex;
  gap: 0.3rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

pre:hover .code-toolbar {
  opacity: 0.7;
}

.code-toolbar:hover {
  opacity: 1 !important;
}

.code-copy,
.code-expand {
  padding: 0.5rem 0.8rem;
  font-size: 0.8rem;
  font-family: var(--font-body);
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 3px;
  cursor: pointer;
  transition: color 0.2s ease;
  min-height: 44px;
  min-width: 44px;
}

.code-copy:hover,
.code-expand:hover {
  color: var(--text-primary);
}

.code-copy.copied {
  color: var(--accent-highlight);
}

/* Expanded code block - full viewport width */
pre.expanded {
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  width: 100vw;
  max-width: 100vw;
  border-radius: 0;
  padding-left: 2rem;
  padding-right: 2rem;
}

pre.expanded .code-toolbar {
  right: 2rem;
}

/* Glitch */
.glitch-ghost {
  position: relative;
}

.glitch-ghost::after {
  content: attr(data-char);
  position: absolute;
  left: 2px;
  top: 1px;
  opacity: 0.15;
  color: var(--accent-primary);
}


/* Tables
–––––––––––––––––––––––––––––––––––––––––––––––––– */
table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th:first-child,
td:first-child {
  padding-left: 0;
}

th:last-child,
td:last-child {
  padding-right: 0;
}

th {
  background-color: var(--bg-secondary);
  font-weight: 500;
}


/* Spacing
–––––––––––––––––––––––––––––––––––––––––––––––––– */
button,
.button {
  margin-bottom: 1rem;
}

input,
textarea,
select,
fieldset {
  margin-bottom: 1.5rem;
}

pre,
blockquote,
dl,
figure,
table,
p,
ul,
ol,
form {
  margin-bottom: 2.5rem;
}


/* HR - Cosmic Divider
–––––––––––––––––––––––––––––––––––––––––––––––––– */
hr {
  margin-top: 3rem;
  margin-bottom: 3.5rem;
  border-width: 0;
  border-top: none;
  height: 20px;
  max-width: 200px;
  margin-left: auto;
  margin-right: auto;
  background: transparent;
  position: relative;
}

hr::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color) 20%, var(--border-color) 80%, transparent);
}


/* ==========================================================================
   Site-Specific Components
   ========================================================================== */

/* Skip Link (Accessibility) */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  top: 1rem;
  left: 1rem;
  width: auto;
  height: auto;
  overflow: visible;
  background: var(--bg-primary);
  color: var(--accent-primary);
  padding: 8px 16px;
  z-index: 100;
  border: 2px solid var(--accent-primary);
}


/* Site Header */
.site-header {
  position: relative;
  text-align: center;
  margin-bottom: 3rem;
  padding-top: 2rem;
}

.site-header h1 {
  margin: 0 0 2rem 0;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 1.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1rem;
  padding: 0.75rem 1rem;
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-bottom: 2px solid transparent;
}

.nav-link.active {
  border-bottom-color: var(--accent-primary);
}




/* Main Content */
#main {
  min-height: 50vh;
}

#main img {
  border-radius: 0;
  margin: 1rem auto;
  display: block;
  border: 1px solid var(--border-color);
  max-width: 100%;
}


/* Site Footer */
.site-footer {
  margin-top: 4rem;
  padding-top: 3rem;
  padding-bottom: 3rem;
  border-top: none;
  text-align: center;
  position: relative;
}

.site-footer::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color) 20%, var(--border-color) 80%, transparent);
}

.validation-badges {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.validation-badges a {
  border-bottom: none;
}

.validation-badges img {
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.validation-badges img:hover {
  opacity: 1;
}

.site-footer small {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.footer-icons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.footer-icons img {
  width: 32px;
  height: 32px;
  border: none;
  margin: 0;
  filter: var(--icon-filter);
  opacity: 0.3;
  animation: sigil-pulse 4s ease-in-out infinite;
}

.footer-icons img:nth-child(2) {
  animation-delay: 1.3s;
}

.footer-icons img:nth-child(3) {
  animation-delay: 2.6s;
}

.footer-icons img:nth-child(4) {
  animation-delay: 3.9s;
}

@keyframes sigil-pulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.5; }
}


/* Entry Footer */
.entry-footer {
  margin-top: 1.5rem;
  text-align: center;
  font-size: 15px;
}

.entry-footer a {
  border-bottom: none;
}

.entry-footer a:hover {
  text-decoration: underline;
}


/* Media */
img, canvas, iframe, video, svg, select, textarea {
  max-width: 100%;
}


/* Selection */
::-moz-selection {
  background: var(--accent-highlight, #0066cc);
  color: var(--bg-primary, #ffffff);
}

::selection {
  background: var(--accent-highlight, #0066cc);
  color: var(--bg-primary, #ffffff);
}


/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }


/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}


/* Consent Banner */
.consent-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: 400px;
  width: calc(100% - 3rem);
  background: var(--bg-secondary, #f5f5f5);
  border: 1px solid var(--border-color, #333);
  padding: 1.5rem;
  z-index: 1000;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.consent-banner p {
  margin: 0 0 1rem;
  text-align: center;
  font-size: 1.4rem;
  color: var(--text-primary, #222);
  hyphens: none;
}

.consent-banner #consent-title {
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.consent-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.consent-buttons button {
  margin: 0;
  padding: 0 2rem;
  min-height: 44px;
  line-height: 42px;
  font-size: 1rem;
  background: var(--bg-primary, #fff);
  color: var(--text-primary, #222);
  border: 1px solid var(--border-color, #333);
}

.consent-buttons button.button-primary {
  background: var(--accent-primary, #0000EE);
  color: var(--bg-primary, #fff);
  border-color: var(--accent-primary, #0000EE);
}


/* ==========================================================================
   Media Queries
   ========================================================================== */

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

@media print {
  .site-header, .site-footer { display: none; }

  *, *:before, *:after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a, a:visited { text-decoration: underline; }
  a[href]:after { content: " (" attr(href) ")"; }

  pre, blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  thead { display: table-header-group; }
  tr, img { page-break-inside: avoid; }
  img { max-width: 100% !important; }
  p, h2, h3 { orphans: 3; widows: 3; }
  h2, h3 { page-break-after: avoid; }
}

@media (max-width: 480px) {
  .site-header h1 {
    font-size: 1.8rem;
  }

  .site-nav {
    gap: 1rem;
  }
}


/* Back Link (single entry view)
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.back-link {
  margin-bottom: 2rem;
}

.back-link a {
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1.4rem;
}


/* Giscus Comments
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.giscus-section {
  max-width: 52rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color, #333);
}

@media (min-width: 550px) {
  .giscus-section {
    padding-inline: 2rem;
  }
}

.giscus-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.giscus-section .giscus {
  min-height: 150px;
}

.giscus-placeholder {
  text-align: center;
  padding: 2rem;
  border: 1px dashed var(--border-color, #444);
  border-radius: 4px;
  margin-bottom: 1rem;
}

.giscus-placeholder .consent-note {
  font-size: 1.2rem;
  color: var(--text-secondary, #888);
  margin-top: 0.5rem;
  margin-bottom: 0;
}

.giscus-placeholder[hidden] {
  display: none;
}


/* Giscus Element Base Styles (for test page)
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.gsc-comment-box-buttons > a {
  display: inline-flex;
  align-items: center;
  padding: 5px 16px;
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  border: 1px solid;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.gsc-comment-box-buttons > a svg {
  margin-right: 4px;
  vertical-align: text-bottom;
  fill: currentColor;
}

.gsc-reactions-button {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  font-size: 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  transition: background-color 0.2s;
}

.gsc-reactions-button:hover {
  background-color: var(--bg-primary);
}

.gsc-comment-box {
  padding: 16px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  margin: 16px 0;
}


/* Model Tabs (Asha identity page) - CSS-only with radio buttons
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.model-tabs {
  margin: 3rem 0;
}

/* Hide radio inputs */
.model-tabs input[type="radio"] {
  display: none;
}

.tab-labels {
  display: flex;
  gap: 0;
  margin-bottom: 0;
}

.tab-label {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s;
}

.tab-label:hover {
  color: var(--text-primary);
}

/* Active tab label styling */
#tab-claude:checked ~ .tab-labels label[for="tab-claude"],
#tab-gemini:checked ~ .tab-labels label[for="tab-gemini"],
#tab-codex:checked ~ .tab-labels label[for="tab-codex"],
#tab-mistral:checked ~ .tab-labels label[for="tab-mistral"] {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.tab-content {
  display: none;
  padding: 2rem 0;
  border-top: none;
}

/* Show content when corresponding radio is checked */
#tab-claude:checked ~ .tab-content-claude,
#tab-gemini:checked ~ .tab-content-gemini,
#tab-codex:checked ~ .tab-content-codex,
#tab-mistral:checked ~ .tab-content-mistral {
  display: block;
}

.tab-content h2 {
  font-size: 2.4rem;
}

.tab-content h3 {
  font-size: 1.8rem;
  text-align: left;
}

.prompt-block {
  margin-bottom: 3rem;
}

.prompt-block summary {
  cursor: pointer;
  font-family: var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 1.4rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

.prompt-block summary:hover {
  color: var(--accent-primary);
}

.prompt-block[open] summary {
  margin-bottom: 1rem;
}

/* Read Time
–––––––––––––––––––––––––––––––––––––––––––––––––– */
.read-time {
  text-align: center;
  font-size: 1.2rem;
  color: var(--text-muted);
  opacity: 0.8;
  margin-top: -0.5rem;
  margin-bottom: 1.5rem;
}