@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300..700&family=Fira+Sans:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Google+Sans+Code:ital,wght@0,300..800;1,300..800&display=swap');

/* Override Bootstrap dark theme to use light variables */
html[data-bs-theme="dark"] {
  --bs-blue: #0d6efd;
  --bs-indigo: #6610f2;
  --bs-purple: #6f42c1;
  --bs-pink: #d63384;
  --bs-red: #dc3545;
  --bs-orange: #fd7e14;
  --bs-yellow: #ffc107;
  --bs-green: #198754;
  --bs-teal: #20c997;
  --bs-cyan: #0dcaf0;
  --bs-black: #000;
  --bs-white: #fff;
  --bs-gray: #6c757d;
  --bs-gray-dark: #343a40;
  --bs-gray-100: #f8f9fa;
  --bs-gray-200: #e9ecef;
  --bs-gray-300: #dee2e6;
  --bs-gray-400: #ced4da;
  --bs-gray-500: #adb5bd;
  --bs-gray-600: #6c757d;
  --bs-gray-700: #495057;
  --bs-gray-800: #343a40;
  --bs-gray-900: #212529;
  --bs-primary: #0d6efd;
  --bs-secondary: #6c757d;
  --bs-success: #198754;
  --bs-info: #0dcaf0;
  --bs-warning: #ffc107;
  --bs-danger: #dc3545;
  --bs-light: #f8f9fa;
  --bs-dark: #212529;
  --bs-primary-rgb: 13, 110, 253;
  --bs-secondary-rgb: 108, 117, 125;
  --bs-success-rgb: 25, 135, 84;
  --bs-info-rgb: 13, 202, 240;
  --bs-warning-rgb: 255, 193, 7;
  --bs-danger-rgb: 220, 53, 69;
  --bs-light-rgb: 248, 249, 250;
  --bs-dark-rgb: 33, 37, 41;
  --bs-primary-text-emphasis: #052c65;
  --bs-secondary-text-emphasis: #2b2f32;
  --bs-success-text-emphasis: #0a3622;
  --bs-info-text-emphasis: #055160;
  --bs-warning-text-emphasis: #664d03;
  --bs-danger-text-emphasis: #58151c;
  --bs-light-text-emphasis: #495057;
  --bs-dark-text-emphasis: #495057;
  --bs-primary-bg-subtle: #cfe2ff;
  --bs-secondary-bg-subtle: #e2e3e5;
  --bs-success-bg-subtle: #d1e7dd;
  --bs-info-bg-subtle: #cff4fc;
  --bs-warning-bg-subtle: #fff3cd;
  --bs-danger-bg-subtle: #f8d7da;
  --bs-light-bg-subtle: #fcfcfd;
  --bs-dark-bg-subtle: #ced4da;
  --bs-primary-border-subtle: #9ec5fe;
  --bs-secondary-border-subtle: #c4c8cb;
  --bs-success-border-subtle: #a3cfbb;
  --bs-info-border-subtle: #9eeaf9;
  --bs-warning-border-subtle: #ffe69c;
  --bs-danger-border-subtle: #f1aeb5;
  --bs-light-border-subtle: #e9ecef;
  --bs-dark-border-subtle: #adb5bd;
  --bs-white-rgb: 255, 255, 255;
  --bs-black-rgb: 0, 0, 0;
  --bs-font-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --bs-font-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --bs-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));
  --bs-body-font-family: var(--bs-font-sans-serif);
  --bs-body-font-size: 1rem;
  --bs-body-font-weight: 400;
  --bs-body-line-height: 1.5;
  --bs-body-color: #212529;
  --bs-body-color-rgb: 33, 37, 41;
  --bs-body-bg: #fff;
  --bs-body-bg-rgb: 255, 255, 255;
  --bs-emphasis-color: #000;
  --bs-emphasis-color-rgb: 0, 0, 0;
  --bs-secondary-color: rgba(33, 37, 41, 0.75);
  --bs-secondary-color-rgb: 33, 37, 41;
  --bs-secondary-bg: #e9ecef;
  --bs-secondary-bg-rgb: 233, 236, 239;
  --bs-tertiary-color: rgba(33, 37, 41, 0.5);
  --bs-tertiary-color-rgb: 33, 37, 41;
  --bs-tertiary-bg: #f8f9fa;
  --bs-tertiary-bg-rgb: 248, 249, 250;
  --bs-heading-color: inherit;
  --bs-link-color: #0d6efd;
  --bs-link-color-rgb: 13, 110, 253;
  --bs-link-decoration: underline;
  --bs-link-hover-color: #0a58ca;
  --bs-link-hover-color-rgb: 10, 88, 202;
  --bs-code-color: #d63384;
  --bs-highlight-color: #212529;
  --bs-highlight-bg: #fff3cd;
  --bs-border-width: 1px;
  --bs-border-style: solid;
  --bs-border-color: #dee2e6;
  --bs-border-color-translucent: rgba(0, 0, 0, 0.175);
  --bs-border-radius: 0.375rem;
  --bs-border-radius-sm: 0.25rem;
  --bs-border-radius-lg: 0.5rem;
  --bs-border-radius-xl: 1rem;
  --bs-border-radius-xxl: 2rem;
  --bs-border-radius-2xl: var(--bs-border-radius-xxl);
  --bs-border-radius-pill: 50rem;
  --bs-box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --bs-box-shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --bs-box-shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  --bs-box-shadow-inset: inset 0 1px 2px rgba(0, 0, 0, 0.075);
  --bs-focus-ring-width: 0.25rem;
  --bs-focus-ring-opacity: 0.25;
  --bs-focus-ring-color: rgba(13, 110, 253, 0.25);
  --bs-form-valid-color: #198754;
  --bs-form-valid-border-color: #198754;
  --bs-form-invalid-color: #dc3545;
  --bs-form-invalid-border-color: #dc3545;
  color: var(--bs-body-color);
  background-color: var(--bs-body-bg);
}

/* Additional overrides for specific classes */
.text-light { color: #212529 !important; }
.bg-dark { background-color: #ffffff !important; }
.navbar.bg-dark { background-color: #ffffff !important; }
.list-group-item-dark { background-color: #f8f9fa !important; color: #212529 !important; }
.form-control, .form-select { background-color: #f8f9fa !important; color: #212529 !important; border-color: #ced4da !important; }
.btn-group .btn-select { background-color: #f8f9fa !important; color: #6c757d !important; border-color: #ced4da !important; }

/* === Base =============================================================== */
body {
  font-family: "Fira Sans", sans-serif;
  font-weight: 300;
  font-optical-sizing: auto;
  font-style: normal;
  font-variation-settings: "wdth" 100;
  background-color: #ffffff !important;
  color: #212529;
  margin: 0 !important;
  padding: 0 !important;
  overflow-x: hidden;
}

.card { background-color: #ffffff; border: none; color: #212529; margin-bottom: 1.5rem; }
.container-xl { max-width: 1140px; margin: 0 auto; padding: 0 15px; }

/* === Navbar & forms ===================================================== */
.navbar { background-color: #ffffff; border-bottom: 1px solid rgba(0,0,0,.1); }
.navbar-brand { font-weight: 600; font-size: 1.5rem; display: flex; align-items: center; gap: 8px; }
.nav-link { color: #212529; transition: color .2s; }
.nav-link:hover { color: #0d6efd !important; }

.search-form { max-width: 300px; width: 100%; display: flex; align-items: center; }
.search-form .form-control { background-color: #f8f9fa; border-color: #ced4da; color: #212529; }
.search-form .form-control:focus { background-color: #f8f9fa; border-color: #0d6efd; box-shadow: 0 0 0 .25rem rgba(13,110,253,.25); }
.search-form .btn { border-color: #ced4da; }

.dropdown-menu { background-color: #ffffff; border: 1px solid rgba(0,0,0,.1); }
.dropdown-item { color: #212529; }
.dropdown-item:hover { background: #0d6efd; color: #fff; }

.modal-content { background: #ffffff; }
.modal-header { border-bottom: 1px solid rgba(0,0,0,.1); }
.modal-footer { border-top: 1px solid rgba(0,0,0,.1); }

.btn-oauth { display: flex; align-items: center; justify-content: center; gap: 8px; }
.navbar-center { flex-grow: 1; display: flex; justify-content: center; }
.navbar-toggler { margin-left: 15px; }

@media (max-width: 991px) {
  .navbar-center { justify-content: center; }
  .search-form { max-width: 100%; margin: 10px auto; }
  .navbar-nav-guest { margin-top: 10px; }
  .navbar-collapse { justify-content: flex-end; }
  .navbar-toggler { margin-left: 10px; }
}

/* === reCAPTCHA (light) =================================================== */
.g-recaptcha { background: #ffffff !important; border: 0 !important; padding: 0 !important; margin-bottom: 1.5rem !important; width: 304px !important; overflow: hidden !important; }
.g-recaptcha > div, .g-recaptcha iframe { background: #ffffff !important; border: 0 !important; box-shadow: none !important; margin: 0 !important; padding: 0 !important; }
.g-recaptcha * { background: #ffffff !important; color: #212529 !important; border: 0 !important; }
.g-recaptcha > div > div { background: #ffffff !important; border: 0 !important; box-shadow: none !important; }
.g-recaptcha iframe { transform: scale(1) !important; -webkit-transform: scale(1) !important; transform-origin: 0 0 !important; -webkit-transform-origin: 0 0 !important; }

/* === Buttons & inputs =================================================== */
.paste-button { width: 150px; margin-top: 1.5rem !important; }

/* select disguised as a button inside .btn-group */
.btn-group .btn-select {
  width: auto;
  padding: .25rem .75rem;
  border: 1px solid var(--bs-secondary);
  color: var(--bs-secondary);
  border-radius: 0;
  appearance: none;
}
.btn-group > .btn-select:first-child { border-top-left-radius: var(--bs-border-radius-sm); border-bottom-left-radius: var(--bs-border-radius-sm); }
.btn-group > .btn-select:last-child { border-top-right-radius: var(--bs-border-radius-sm); border-bottom-right-radius: var(--bs-border-radius-sm); }

.btn-outline-secondary:active,
.btn-outline-secondary.active,
.btn-check:checked + .btn-outline-secondary,
.show > .btn-outline-secondary.dropdown-toggle {
  background-color: rgba(var(--bs-secondary-rgb), .2);
  color: var(--bs-secondary);
  border-color: var(--bs-secondary);
}
.btn-outline-secondary:focus-visible { box-shadow: 0 0 0 .2rem rgba(var(--bs-secondary-rgb), .25); }
.btn-group .btn-select + .btn { margin-left: -1px; }

.form-group, .card-body { background: #ffffff !important; padding: 15px; margin: 0 !important; }
.list-group-item-dark { background: #f8f9fa; }
.page-link { background: #f8f9fa; border-color: #dee2e6; color: #212529; }

/* === Misc small UI bits ================================================= */
.line-number-tooltip { position: absolute; background: #f8f9fa; color: #212529; padding: 2px 6px; border-radius: 3px; font-size: 12px; z-index: 1000; display: none; }
.recent-paste-button { margin-left: auto; min-width: 30px; }
.list-group-item { display: flex; align-items: center; padding-right: 10px; }
.navbar-nav-guest { margin-left: auto !important; }
.navbar-nav.me-auto { margin-right: 1rem !important; }

.card-header {
  overflow-x: auto; max-width: 100%; display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 1rem;
}
.card-header h1 { margin: 0; font-size: 1rem; }
.card-header .meta { font-size: .9rem; margin: 0; }
.card-header .btn-group { flex-shrink: 0; }

/* === Code blocks / GeSHi =============================================== */
.code-content, .paste, .geshi { background: #f6f8fa; color: #24292e; }

.code-content .de1, .paste .de2, .paste .li1, .paste .li2 { color: #24292e !important; }
.code-content .kw1, .paste .sy1 { color: #005cc5 !important; }
.code-content .kw2 { color: #22863a !important; }
.code-content .st0 { color: #032f62 !important; }
.code-content .co1, .paste .coMULTI { color: #6a737d !important; font-style: italic; }
.code-content .nu0 { color: #6f42c1 !important; }
.code-content .me1, .code-content .me2 { color: #005cc5 !important; }
.code-content .br0 { color: #24292e !important; }
.code-content .sy0 { color: #d73a49 !important; }
.code-content .re0 { color: #6f42c1 !important; }
.code-content .st_h { color: #22863a !important; }

.geshi .kw1 { color: #005cc5 !important; }
.geshi .kw2 { color: #22863a !important; }
.geshi .st0 { color: #032f62 !important; }
.geshi .co1 { color: #6a737d !important; font-style: italic; }
.geshi .nu0 { color: #6f42c1 !important; }
.geshi .sy0 { color: #d73a49 !important; }
.geshi .br0 { color: #24292e !important; }
.geshi .re0 { color: #6f42c1 !important; }
.geshi .me1, .geshi .me2 { color: #005cc5 !important; }

.geshi ol.geshi-ln { color: #6a737d; }
.geshi.geshi-fancy ol.geshi-ln > li { border-left-color: #e1e4e8; }

.code-content {
  overflow-x: auto; max-width: 100%; border-radius: 6px; margin-bottom: 1rem;
  font-family: "Fira Code", monospace; font-weight: 200; font-optical-sizing: auto;
  font-style: normal; font-size: .8rem;
}
.code-content li { border-left: 1px solid rgba(0,0,0,.12) !important; }

.code-content.no-line-numbers ol,
.code-content.no-line-numbers pre,
.code-content.no-line-numbers ol li,
.code-content.no-line-numbers pre span {
  list-style: none !important; margin-left: 0 !important; padding-left: 0 !important; border-left: none !important;
}

/* GeSHi tweak when numbers hidden */
.code-content.no-line-numbers ol li { padding-left: 10px !important; }

.code-content.no-line-numbers ol li::before,
.code-content.no-line-numbers pre::before,
.code-content.no-line-numbers pre span::before { content: none !important; }

.code-content-fullscreen {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 1050;
  margin: 0; padding: 1rem; background: #ffffff;
}

.syntax-select { width: 200px; }
.input-group-text { background: #f8f9fa; border-color: #ced4da; color: #212529; }
.guest-welcome { padding: 2rem; }
.guest-welcome i { font-size: 5rem; margin-bottom: 1rem; }

.no-line-numbers ol, .no-line-numbers ol li.marker { list-style: none !important; }

.close-btn {
  position: absolute; top: 5px; right: 10px; background: none; border: none;
  font-size: 1.5em; cursor: pointer; color: #212529;
}
.notification { position: relative; overflow: auto; padding: 10px; margin-bottom: 10px; border: 1px solid #ccc; display: none; }
.notification.error { border-color: #dc3545; color: #dc3545; }
.notification.fade-out { opacity: 0; transition: opacity .5s; }

/* GDPR banner */
#cookieBanner { font-size: .9em; z-index: 1080; display: none; background: rgba(var(--bs-light-rgb), var(--bs-bg-opacity)) !important; backdrop-filter: blur(3px); }

/* === Editor (textarea + gutter) ======================================== */

/* when a file is dragged over the editor */
.editor-wrap { position: relative; }

/* Subtle outline when dragging over the zone */
#edit-code.drag-hover,
.editor-wrap.drag-hover {
  outline: 2px dashed var(--drop-accent, var(--bs-primary, #0d6efd));
  outline-offset: 4px;
}

/* Overlay */
.editor-wrap .drop-overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10;
  pointer-events: none;

  /* light-friendly glass */
  background: rgba(0,0,0, .06);
  color: var(--drop-text, #212529);
  border: 2px dashed rgba(0,0,0, .55);
  border-radius: .6rem;
  text-shadow: 0 1px 2px rgba(255,255,255,.6);
  font-weight: 600;

  /* gentle glow using Bootstrap primary */
  box-shadow:
    0 0 0 2px rgba(var(--bs-primary-rgb, 13,110,253), .15),
    0 0 36px rgba(var(--bs-primary-rgb, 13,110,253), .18) inset;
}

.editor-wrap.dragging .drop-overlay { display: flex; }

/* slightly nicer motion */
@media (prefers-reduced-motion: no-preference) {
  .editor-wrap .drop-overlay { transition: opacity .15s ease-in-out; opacity: .98; }
  .editor-wrap.dragging .drop-overlay { opacity: 1; }
}

.editor-wrap { position: relative; display: grid; grid-template-columns: max-content 1fr; align-items: stretch; gap: 0; overflow: hidden; box-shadow: none !important; }
.editor-gutter {
  display: flex; overflow: hidden; text-align: right; user-select: none; white-space: pre;
  color: #6a737d; background: #f6f8fa; border: 1px solid #d0d7de; border-right: none;
  border-radius: .5rem 0 0 .5rem; box-sizing: border-box; line-height: 1.5; font-size: 14px;
  padding: 8px 6px; min-width: 2rem; font-variant-numeric: tabular-nums; font-feature-settings: "tnum";
}
.editor-gutter-inner { white-space: pre; padding: 0 6px 0 4px; padding-top: 0; align-self: flex-start; will-change: transform; }
.editor-ta {
  font-family: "Fira Code", monospace; line-height: 1.5; font-size: 14px; color: #24292f;
  background: #ffffff; border: 1px solid #d0d7de; border-left: none; border-radius: 0 .5rem .5rem 0;
  outline: none !important; box-shadow: none !important; resize: vertical; padding: 8px 10px; width: 100%; caret-color: #24292f;
}
.editor-ta::-webkit-scrollbar { width: 12px; }
.editor-ta::-webkit-scrollbar-track { background: #ffffff; }
.editor-ta::-webkit-scrollbar-thumb { background: #d0d7de; border-radius: 6px; border: 3px solid #ffffff; }
.editor-ta:focus, .search-form .form-control:focus { box-shadow: none !important; border-color: #d0d7de !important; outline: 0 !important; }

/* outline btns */
.btn-outline-secondary { --btn-border: rgba(var(--bs-secondary-rgb), .8); border-color: var(--btn-border); }
.btn-outline-secondary:hover, .btn-outline-secondary:focus { border-color: var(--btn-border); background-color: rgba(var(--bs-secondary-rgb), .08); }
.btn-outline-secondary:active, .btn-outline-secondary.active, .btn-check:checked + .btn-outline-secondary, .show > .btn-outline-secondary.dropdown-toggle { border-color: var(--btn-border); background-color: rgba(var(--bs-secondary-rgb), .16); }
.btn-outline-secondary:focus-visible { outline: 0; box-shadow: 0 0 0 .2rem rgba(var(--bs-secondary-rgb), .25); }
.btn-group .btn { position: relative; z-index: 1; }
.btn-group .btn:focus, .btn-group .btn:active, .btn-group .btn.active { z-index: 2; }
.btn-group .btn-select { border-color: var(--btn-border); }
.btn-group .btn-select:focus { box-shadow: none; }

/* Force GeSHi line numbers to render and be visible */
.code-content ol { list-style-type: decimal !important; list-style-position: outside !important; padding-left: 3.5em !important; margin-left: 0 !important; }
.code-content ol li { list-style-type: none !important; padding-left: .5em; }
.code-content ol li::marker { content: counter(list-item)"\a0\a0"; }
.code-content:not(.no-line-numbers) ol, .code-content:not(.no-line-numbers) ol li { list-style: decimal !important; }

.no-line-numbers ol, .no-line-numbers ol li, .no-line-numbers ol li::before {
  list-style: none !important; counter-increment: none !important; content: '' !important; padding-left: 0 !important; margin-left: 0 !important;
}
.no-line-numbers ol { padding-left: 0 !important; }

/* highlight.php numbers layout */
.code-content pre.hljs { margin: 0; }
.code-content .hljs-ln, .code-content .hljs-ln li { list-style: none !important; margin-left: 0 !important; padding-left: 0 !important; }
.code-content .hljs-ln {
  display: table; width: 100%; border-collapse: separate; border-spacing: 0;
}
.code-content .hljs-ln-line { display: table-row; }
.code-content .hljs-ln-n, .code-content .hljs-ln-c { display: table-cell; vertical-align: top; background: inherit; }
.code-content .hljs-ln-n {
  user-select: none; text-align: right; padding: 0 .50rem 0 0; white-space: pre; opacity: .6;
  font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; width: 1px;
}
.code-content .hljs-ln-c { border-left: 1px solid rgba(0,0,0,.12); padding-left: .75rem; white-space: pre; width: 100%; }
.code-content.no-line-numbers .hljs-ln-n { display: none; }
.code-content.no-line-numbers .hljs-ln-c { border-left: 0; padding-left: 0; }

/* line highlight */
:root {
  --line-hl-bg: rgb(107 164 255 / 12%);
  --line-hl-bar: rgb(74 180 255 / 50%);
  --line-hl: rgb(74 180 255 / 100%);
}
@media (prefers-color-scheme: light) {
  :root { --line-hl-bg: rgb(107 164 255 / 12%); --line-hl-bar: rgb(74 180 255 / 50%); --line-hl: rgb(74 180 255 / 100%); }
}
.hljs-hl { background: var(--line-hl-bg); position: relative; box-shadow: inset 3px 0 0 var(--line-hl-bar); }
.hljs-hl::marker span.hljs-ln-n { color: var(--line-hl); }

/* Markdown/Parsedown */
.md-body { padding: 20px; border-radius: var(--bs-border-radius-sm); background: #f6f8fa !important; }

html { scroll-behavior: smooth; }

/* ---------- Comments ---------- */

/* one place to tweak the indent */
#comments { --indent-step: 1.25rem; overflow-x: hidden; }

/* IMPORTANT: cancel Bootstrap’s flex list-group inside comments */
#comments .list-group { display: block; }
#comments .list-group-item { 
  display: block !important;   /* overrides .list-group-item{display:flex} */
  overflow: visible;
}

/* text wrapping guards */
#comments .comment-main { min-width: 0; }
#comments .comment-body,
#comments .comment-body a { overflow-wrap: anywhere; word-break: break-word; }

/* only the top level keeps dividers */
#comments .list-group.list-group-flush > .list-group-item { border-width: 0 0 1px 0; }

/* each nested UL indents itself; because it's display:block,
   the indent reduces its available width instead of overflowing */
#comments .comment-main > ul.list-group {
  margin: .5rem 0 0 var(--indent-step);
  padding-left: .75rem;
  border-left: 1px solid rgba(0,0,0,.15);
  box-sizing: border-box;
  width: auto;            /* don’t force 100% in flex land */
  max-width: 100%;
}

/* nested rows don't add their own borders/padding */
#comments .comment-main > ul.list-group > .list-group-item {
  border: 0 !important;
  padding-left: 0;
  padding-right: 0;
}

.comment-avatar { width: 36px; height: 36px; background: rgba(57,155,255,.15); }
#comments .list-group-item:target {
  outline: 1px solid rgba(13,110,253,.35);
  background: rgba(13,110,253,.05);
  scroll-margin-top: 90px;
}
.comment-permalink { opacity: .5; } .comment-permalink:hover { opacity: 1; }


/* ---------- Diff viewer ---------- */
.diff-outer { padding-top: 12px; }

/* Toolbar */
.diff-toolbar {
  display: flex; align-items: center; flex-wrap: wrap; gap: .5rem;
  padding: .5rem .75rem;
  border: 1px solid var(--bs-border-color, #d0d7de);
  border-radius: .5rem;
  background: var(--bs-body-bg, transparent);
}
.diff-toolbar .grow { flex: 1; }
.diff-toolbar .lbl { opacity: .8; font-size: .9rem; margin-right: .25rem; }
.langbar { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; width: 100%; }
.lang-select { min-width: 160px; }

/* Area + scrollport */
.diff-area {
  --lno: 56px;                   /* per-side line number width */
  --splitter-hit: 14px;          /* pointer target width */
  --splitter-line: 2px;          /* visual line width */
  position: relative;
  margin-top: .75rem;
}
.diff-area .diff-scroll {
  height: clamp(60svh, calc(100svh - 240px), 88svh);
  overflow: auto;
  border: 1px solid var(--bs-border-color, #d0d7de);
  border-radius: .5rem;
  position: relative;
}

/* Sticky overlay host for the splitter (no layout impact) */
.diff-area .split-overlay {
  position: sticky;
  top: 0;
  height: 0;
  pointer-events: none;
  z-index: 10;
}

/* Splitter — wide hit area, thin visual line */
.diff-area .splitter {
  position: absolute;
  top: 0;
  height: 100svh;
  left: var(--form-split-left, 50%);
  width: var(--splitter-hit);
  transform: translateX(calc(-.5 * var(--splitter-hit)));
  cursor: col-resize;
  pointer-events: auto;
  z-index: 11;
}
.diff-area .splitter::before {
  content: "";
  position: absolute; inset: 0;
  margin: 0 calc((var(--splitter-hit) - var(--splitter-line)) / 2);
  border-radius: 1px;
  background: var(--bs-border-color, #d0d7de);
}
.diff-area .splitter::after {
  content: "";
  position: absolute; inset: 0;
  background: #6c757d1a; opacity: 0;
  transition: opacity .12s ease-in-out;
  pointer-events: none;
}
.diff-area .splitter:hover::before { background: var(--bs-border-color, #6c757db3); }
.diff-area .splitter:hover::after,
.diff-area .splitter.dragging::after { opacity: .35; }

/* Table */
.diff-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
  font: 13px/1.35 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
.diff-table td { vertical-align: top; }

/* Line numbers */
.diff-table td.no {
  width: var(--lno); min-width: var(--lno);
  color: var(--bs-secondary-color, #6a737d);
  user-select: none; text-align: right;
  padding: 2px 6px;
  border-right: 1px solid var(--bs-border-color, #d0d7de);
}

/* Code cells */
.diff-table td.code { padding: 0; }
.code-inner {
  display: block; width: 100%; padding: 2px 3px;
  overflow-x: auto; overflow-y: visible;          /* avoid nested vertical scrollbars */
}
/* neutralize highlight block padding */
.code-inner .hljs { display: inline; padding: 0 !important; background: transparent; line-height: inherit; }

/* Show trailing spaces faintly */
.show-invisibles .code-inner {
  background-image: linear-gradient(to right, transparent 0, transparent calc(100% - 1ch), rgba(0,0,0,.06) calc(100% - 1ch));
  background-size: 100% 1.35em;
  background-repeat: repeat-y;
}

/* Zebra */
.diff-table tr:nth-child(even) td { background: rgba(0,0,0,.02); }
@media (prefers-color-scheme: light) {
  .diff-table tr:nth-child(even) td { background: rgba(0,0,0,.02); }
}

/* highlight changes */
.diff-inside-add,
.diff-inside-del {
  background: none;
  padding: 0;
  border-radius: 0;
  box-decoration-break: clone;/* each wrapped line paints correctly */
}

.diff-inside-add {
  /* marker-style swash under the text */
  box-shadow: inset 0 -0.35em 0 rgba(25,135,84,.35);
  outline: 1px solid transparent; outline-offset: 1px;
}

.diff-inside-del {
  box-shadow: inset 0 -0.35em 0 rgba(220,53,69,.28);
  /*text-decoration: line-through;*/
  text-decoration-thickness: 1.8px;
  text-decoration-color: rgba(220,53,69,.85);
  text-decoration-skip-ink: auto;
}

@media (prefers-color-scheme: light) {
  .diff-inside-add { box-shadow: inset 0 -0.35em 0 rgba(25,135,84,.35); }
  .diff-inside-del { box-shadow: inset 0 -0.35em 0 rgba(220,53,69,.28); }
}

/* Change surfaces */
.diff-table td.ctx  { background: transparent; }
.diff-table td.add  { background: rgba(25,135,84,.16); }
.diff-table td.del  { background: rgba(220,53,69,.18); }
.diff-table td.empty { background: rgba(108,117,125,.10); }

.marker { font-weight: 600; margin-right: .25rem; opacity: .9; }

/* Wrapping + line-number toggles */
.wrap-on  .code-inner { white-space: pre-wrap; word-break: break-word; }

/* Keep cells, collapse visuals when line numbers are off */
.lineoff td.no {
  width: 0 !important; min-width: 0 !important;
  padding: 0 !important; border: 0 !important;
  color: transparent !important; overflow: hidden !important;
}
.lineoff col.col-lno-l,
.lineoff col.col-lno-r { width: 0 !important; min-width: 0 !important; }

/* Unified specifics */
.diff-table.unified td.no { width: 2.75rem; min-width: 2.75rem; }
.diff-table.unified.lineoff td.no { width: 0 !important; min-width: 0 !important; padding: 0 !important; border: 0 !important; }
.diff-table.unified td.code { width: auto; }

/* A11y/UX */
@media (pointer: coarse) {
  .diff-area { --splitter-hit: 18px; }            /* easier to grab on touch */
}
@media (prefers-reduced-motion: reduce) {
  .diff-area .splitter::after { transition: none; }
}

/* Responsive */
@media (max-width: 1000px) { .langbar { grid-template-columns: 1fr; } }

/* ---- Internal CAPTCHA ---- */
.captcha-img {
  height: 64px;
  width: 220px;
  object-fit: cover;
  border-radius: .5rem;
  border: 1px solid var(--bs-border-color, rgba(0,0,0,.125));
  background: var(--bs-body-bg,#fff);
  user-select: none;
}
[data-captcha] .form-control { min-height: 56px; }
.imagever { width: auto; max-width: 100%; height: 56px; object-fit: cover; }