/* ==========================================================================
   HARDBRUT v0.13 — Neubrutalist CSS. Zero imports. No embedded font — system font stack only.
   ========================================================================== */


/* ---- TOKENS ---- */
:root {
  color-scheme: light;
  --ink: #000;
  --paper: #fff;
  --bg: #fdfaf2;
  --accent: #ffd23f;
  --accent-ink: #000;
  --muted: #666;
  --border: 3px solid var(--ink);
  --shadow: 5px 5px 0 var(--ink);
  --shadow-sm: 3px 3px 0 var(--ink);
  --shadow-lg: 7px 7px 0 var(--ink);
  /* Body text — a plain system sans. The embedded Inter 900 is for DISPLAY
     only (headings, buttons, navbar, brand, labels); it is never used for
     running text or form fields, which would render every weight as 900. */
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-display: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Fira Code", Menlo, Consolas, monospace;
  --space: 1.5rem;
  --space-sm: 0.75rem;
  --space-lg: 2.5rem;
  /* Every button-like control (button, .btn, theme/navbar toggles) shares
     this floor so a row of mixed controls always lines up — no per-control
     padding math to keep in sync. */
  --control-h: 3rem;
}
[data-accent="yellow"]{--accent:#ffd23f;--accent-ink:#000}
[data-accent="red"]{--accent:#ff4444;--accent-ink:#000}
[data-accent="blue"]{--accent:#4488ff;--accent-ink:#000}
[data-accent="green"]{--accent:#44cc44;--accent-ink:#000}
[data-accent="pink"]{--accent:#ff66aa;--accent-ink:#000}
[data-accent="purple"]{--accent:#aa66ff;--accent-ink:#000}

/* ---- RESET ---- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%}
body{font:1.0625rem/1.65 var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}

/* ---- MARKDOWN ELEMENTS ---- */
h1,h2,h3,h4,h5,h6,.text-h1,.text-h2,.text-h3,.text-h4,.text-h5,.text-h6{font-family:var(--font-display);text-transform:uppercase;letter-spacing:-0.02em;line-height:1.1;margin:var(--space-lg) 0 var(--space-sm);font-weight:900}
h1:first-child,h2:first-child,h3:first-child,h4:first-child,h5:first-child,h6:first-child{margin-top:0}
h1,.text-h1{font-size:clamp(2rem,5vw,3.5rem)}
h2,.text-h2{font-size:clamp(1.5rem,3.5vw,2.5rem)}
h3,.text-h3{font-size:clamp(1.2rem,2.5vw,1.75rem)}
h4,.text-h4{font-size:1.15rem;letter-spacing:0}
h5,.text-h5{font-size:0.95rem;letter-spacing:0.03em}
h6,.text-h6{font-size:0.8rem;letter-spacing:0.06em}
p{margin-bottom:var(--space-sm);max-width:65ch}
a{color:var(--ink);text-underline-offset:3px;text-decoration-thickness:2px}
a:hover{background:var(--accent)}
strong,b{font-weight:800}
em,i{font-style:italic}
del,s{text-decoration:line-through;text-decoration-thickness:2px}
u,ins{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px}
mark{background:var(--accent);padding:0 2px}
small{font-size:0.85em}
sub,sup{font-size:0.75em;line-height:0;position:relative;vertical-align:baseline}
sup{top:-0.5em}sub{top:0.25em}
::selection{background:var(--accent);color:var(--accent-ink)}
code,kbd,samp{font-family:var(--font-mono);font-size:0.85em;padding:1px 5px;border:2px solid var(--ink);background:var(--paper);white-space:nowrap}
pre{border:var(--border);box-shadow:var(--shadow);padding:var(--space);overflow-x:auto;margin-bottom:var(--space);background:var(--paper)}
pre code{border:0;padding:0;background:none;white-space:pre;font-size:0.88em}
blockquote{border-left:6px solid var(--ink);padding:var(--space-sm) var(--space);margin:var(--space) 0;background:var(--paper);font-style:italic}
ul,ol{padding-left:1.5em;margin-bottom:var(--space-sm)}
ul ul,ol ol,ul ol,ol ul{margin-bottom:0}
li{margin-bottom:0.35rem}
dl{margin-bottom:var(--space-sm)}
dt{font-weight:800;margin-top:var(--space-sm)}
dd{margin-left:1.5em;margin-bottom:var(--space-sm)}
hr{border:0;border-top:var(--border);margin:var(--space-lg) 0}
img,svg,video,iframe{max-width:100%;height:auto;display:block}
img{border:2px solid var(--ink);box-shadow:var(--shadow-sm)}
figure{margin:var(--space) 0}
figcaption{font-size:0.85rem;color:var(--muted);margin-top:var(--space-sm)}
table{width:100%;max-width:100%;border-collapse:collapse;margin-bottom:var(--space);border:var(--border);box-shadow:var(--shadow);display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
th,td{border:2px solid var(--ink);padding:0.5rem 0.75rem;text-align:left}
th{background:var(--ink);color:var(--paper);font-family:var(--font-display);font-weight:900;text-transform:uppercase;font-size:0.82rem;letter-spacing:0.03em}
tr:nth-child(even) td{background:var(--paper)}
tr:nth-child(odd) td{background:var(--bg)}
abbr[title]{text-decoration:underline dotted;text-underline-offset:3px;cursor:help}
details{border:var(--border);box-shadow:var(--shadow-sm);margin-bottom:var(--space-sm);background:var(--paper);transition:box-shadow 0.1s ease}
details[open]{box-shadow:var(--shadow)}
summary{padding:var(--space-sm) var(--space);cursor:pointer;font-family:var(--font-display);font-weight:900;font-size:0.95rem;text-transform:uppercase;letter-spacing:0.02em;list-style:none;display:flex;align-items:center;gap:0.5rem;user-select:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";font-size:1.1rem;font-weight:400;display:inline-block;width:1.2em;text-align:center}
details[open]>summary::before{content:"−"}
details>:not(summary){padding:0 var(--space) var(--space)}
details>:not(summary):first-child{padding-top:var(--space-sm)}

/* ---- LAYOUT ---- */
.container{width:100%;max-width:1100px;margin:0 auto;padding:0 var(--space)}
.section{padding:var(--space-lg) 0}

/* ---- GRID ---- */
.grid{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--space)}
.col-1{grid-column:span 1}.col-2{grid-column:span 2}.col-3{grid-column:span 3}
.col-4{grid-column:span 4}.col-5{grid-column:span 5}.col-6{grid-column:span 6}
.col-7{grid-column:span 7}.col-8{grid-column:span 8}.col-9{grid-column:span 9}
.col-10{grid-column:span 10}.col-11{grid-column:span 11}.col-12{grid-column:span 12}
@media(max-width:768px){.grid{grid-template-columns:repeat(6,1fr)}.col-1,.col-2,.col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-10,.col-11,.col-12{grid-column:span 6}}
@media(max-width:480px){.grid{grid-template-columns:1fr}.col-1,.col-2,.col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-10,.col-11,.col-12{grid-column:span 1}}

/* ---- NAVBAR ---- */
.navbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:var(--space-sm);padding:var(--space-sm) var(--space);background:var(--paper);border-bottom:4px solid var(--ink);position:sticky;top:0;z-index:100}
.navbar-brand{font-family:var(--font-display);font-weight:900;font-size:2.2rem;text-transform:uppercase;text-decoration:none;letter-spacing:-0.05em;line-height:1.5;padding:0 0.5rem;border:var(--border);background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow)}
.navbar-brand:hover{text-decoration:underline;text-underline-offset:4px}
.navbar-links{display:flex;list-style:none;gap:0.25rem;padding:0;margin:0}
.navbar-links a{display:inline-block;padding:0.4rem 0.7rem;text-decoration:none;font-family:var(--font-display);font-weight:700;font-size:0.85rem;text-transform:uppercase;letter-spacing:0.03em;border:2px solid transparent;color:var(--ink)}
.navbar-links a:hover,.navbar-links a[aria-current]{background:var(--accent);border-color:var(--ink);box-shadow:var(--shadow-sm);color:var(--accent-ink)}
@media(max-width:640px){.navbar-links{flex-direction:column;width:100%;display:none}.navbar-links.open{display:flex}}
.navbar-toggle{display:none;align-items:center;justify-content:center;min-height:var(--control-h);background:var(--paper);border:var(--border);padding:0 var(--space-sm);font-family:var(--font-mono);cursor:pointer;color:var(--ink);box-shadow:var(--shadow-sm)}
.navbar-toggle:hover{background:var(--accent);color:var(--accent-ink)}
@media(max-width:640px){.navbar-toggle{display:inline-flex}}

/* ---- BUTTONS ---- */
button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;min-height:var(--control-h);padding:0.5rem 1.5rem;font-family:var(--font-display);font-weight:900;font-size:0.95rem;text-transform:uppercase;letter-spacing:0.02em;text-decoration:none;cursor:pointer;border:var(--border);text-align:center;overflow-wrap:break-word;line-height:1.2;transition:transform 0.1s ease,box-shadow 0.1s ease;background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow)}
button.cancel,.btn-cancel{background:var(--paper);color:var(--ink);box-shadow:var(--shadow-sm)}
button:disabled,.btn:disabled{opacity:0.45;cursor:not-allowed}
button:hover,.btn:hover,button.cancel:hover,.btn-cancel:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}
button:active,.btn:active,button.cancel:active,.btn-cancel:active{transform:translate(3px,3px);box-shadow:none}
button:focus-visible,.btn:focus-visible,button.cancel:focus-visible,.btn-cancel:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
button:disabled:hover,.btn:disabled:hover,.btn:disabled:active,.btn:disabled:active{transform:none;box-shadow:var(--shadow)}
button.cancel:disabled:hover,.btn-cancel:disabled:hover,.btn-cancel:disabled:active,.btn-cancel:disabled:active{box-shadow:var(--shadow-sm)}

/* ---- CARD ---- */
.card{border:var(--border);box-shadow:var(--shadow);background:var(--paper);margin-bottom:var(--space);transition:transform 0.1s ease,box-shadow 0.1s ease}
.card:hover{transform:translate(-2px,-2px);box-shadow:var(--shadow-lg)}
.card-body{padding:var(--space)}
.card-body>*:first-child{margin-top:0}
.card-body>*:last-child{margin-bottom:0}
.card-img{width:100%;display:block;border-bottom:var(--border)}
.card-footer{padding:var(--space-sm) var(--space);border-top:var(--border);display:flex;gap:var(--space-sm);align-items:center}

/* ---- LIST ROW (e.g. a conversation list) ---- */
.list-row{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space);border:var(--border);box-shadow:var(--shadow-sm);background:var(--paper);color:var(--ink);text-decoration:none;margin-bottom:var(--space-sm);cursor:pointer;transition:transform 0.1s ease,box-shadow 0.1s ease}
.list-row:last-child{margin-bottom:0}
.list-row:hover{background:var(--paper);transform:translate(-2px,-2px);box-shadow:var(--shadow)}
.list-row:active{background:var(--paper);transform:translate(1px,1px);box-shadow:2px 2px 0 var(--ink)}
.list-row-avatar{width:44px;height:44px;flex-shrink:0;border:2px solid var(--ink);background:var(--bg);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:900;overflow:hidden}
.list-row-avatar img{width:100%;height:100%;object-fit:cover}
.list-row-body{flex:1;min-width:0}
.list-row-title{display:block;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-row-subtitle{display:block;font-size:0.85rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-row-meta{flex-shrink:0;display:flex;flex-direction:column;align-items:flex-end;gap:0.3rem;font-size:0.75rem;color:var(--muted)}

/* ---- CHAT ---- */
.chat{display:flex;flex-direction:column;gap:var(--space-sm)}
.chat-msg{display:flex;align-items:flex-end;gap:0.5rem;align-self:flex-start;max-width:85%}
.chat-msg-self{flex-direction:row-reverse;align-self:flex-end}
.chat-avatar{width:32px;height:32px;flex-shrink:0;border:2px solid var(--ink);background:var(--bg);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:900;font-size:0.8rem;overflow:hidden}
.chat-avatar img{width:100%;height:100%;object-fit:cover}
.chat-bubble{border:var(--border);box-shadow:var(--shadow-sm);padding:var(--space-sm) var(--space);background:var(--paper);overflow-wrap:break-word}
.chat-msg-self .chat-bubble{background:var(--accent);color:var(--accent-ink)}
.chat-time{display:block;font-size:0.72rem;color:var(--muted);margin-top:0.25rem}
.chat-msg-self .chat-time{text-align:right}

/* ---- INPUTS ---- */
input[type="text"],input[type="email"],input[type="password"],input[type="search"],input[type="url"],input[type="number"],input[type="tel"],textarea,select{display:block;width:100%;padding:0.7rem 0.85rem;font:0.95rem var(--font);border:var(--border);background:var(--paper);color:var(--ink);min-height:46px;box-shadow:var(--shadow-sm);transition:box-shadow 0.1s ease}
input:focus,textarea:focus,select:focus{outline:0;box-shadow:var(--shadow)}
textarea{min-height:120px;resize:vertical}
label{display:block;font-family:var(--font-display);font-weight:900;font-size:0.85rem;text-transform:uppercase;letter-spacing:0.03em;margin-bottom:0.35rem}
.field{margin-bottom:var(--space-sm)}
.field-hint{font-size:0.8rem;color:var(--muted);margin-top:0.25rem}
input[type="checkbox"],input[type="radio"]{appearance:none;display:inline-block;width:22px;height:22px;border:var(--border);background:var(--paper);box-shadow:var(--shadow-sm);vertical-align:-5px;margin-right:0.4rem;cursor:pointer;position:relative}
input[type="radio"]{border-radius:50%}
input[type="checkbox"]:checked::after{content:"✓";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:14px}
input[type="radio"]:checked::after{content:"";position:absolute;inset:4px;background:var(--ink);border-radius:50%}
input[type="checkbox"].switch{width:48px;height:26px;vertical-align:-8px}
input[type="checkbox"].switch::after{content:"";position:absolute;top:2px;left:2px;width:16px;height:16px;background:var(--ink);transition:transform 0.15s ease}
input[type="checkbox"].switch:checked{background:var(--accent)}
input[type="checkbox"].switch:checked::after{background:var(--accent-ink);transform:translateX(22px)}

/* ---- BADGE / CALLOUT / MESSAGE ---- */
.badge{display:inline-block;padding:0.2rem 0.65rem;font-family:var(--font-mono);font-size:0.72rem;text-transform:uppercase;letter-spacing:0.05em;border:2px solid var(--ink);box-shadow:var(--shadow-sm);background:var(--accent);color:var(--accent-ink);vertical-align:middle}
.callout{border:var(--border);box-shadow:var(--shadow-sm);padding:var(--space);font-weight:700;background:var(--accent);color:var(--accent-ink);margin-bottom:var(--space-sm)}
.message{border:var(--border);box-shadow:var(--shadow-sm);padding:var(--space-sm) var(--space);margin-bottom:var(--space-sm);font-weight:700;background:var(--accent);color:var(--accent-ink)}
.chip{display:inline-flex;align-items:center;gap:0.35rem;padding:0.3rem 0.75rem;font-family:var(--font-mono);font-size:0.78rem;text-transform:uppercase;letter-spacing:0.04em;border:2px solid var(--ink);background:var(--paper);color:var(--ink);cursor:pointer;box-shadow:var(--shadow-sm);transition:transform 0.1s ease,box-shadow 0.1s ease}
.chip:hover{transform:translate(-1px,-1px);box-shadow:var(--shadow)}
.chip:active{transform:translate(1px,1px);box-shadow:none}
.chip[aria-pressed="true"]{background:var(--accent);color:var(--accent-ink)}

/* ---- TABS ---- */
.tab-list{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:var(--space)}
.tab{padding:0.6rem 1.25rem;font-family:var(--font-display);font-weight:900;font-size:0.85rem;text-transform:uppercase;letter-spacing:0.02em;background:var(--paper);color:var(--ink);border:2px solid var(--ink);cursor:pointer;box-shadow:var(--shadow-sm);transition:transform 0.1s ease,box-shadow 0.1s ease}
.tab:hover{transform:translate(-1px,-1px);box-shadow:var(--shadow)}
.tab[aria-selected="true"]{background:var(--accent);color:var(--accent-ink)}
.tab-panel[hidden]{display:none}

/* ---- DIALOG ---- */
dialog{border:var(--border);box-shadow:var(--shadow-lg);padding:var(--space);background:var(--paper);color:var(--ink);max-width:32rem;width:90vw;margin:auto}
dialog::backdrop{background:rgba(0,0,0,0.5)}
dialog>:first-child{margin-top:0}
dialog>:last-child{margin-bottom:0}

/* ---- PROGRESS (determinate) ---- */
.progress{border:var(--border);background:var(--paper);box-shadow:var(--shadow-sm);height:22px;padding:3px}
.progress-fill{height:100%;background-color:var(--accent);background-image:repeating-linear-gradient(90deg,var(--paper) 0,var(--paper) 3px,transparent 3px,transparent 14px);transition:width 0.2s ease}

/* ---- SPINNER (indeterminate) — hard steps, no smooth rotation ---- */
.spinner{display:inline-flex;gap:4px}
.spinner span{width:10px;height:10px;background:var(--ink);opacity:0.25;animation:hb-spin 1s steps(1) infinite}
.spinner span:nth-child(2){animation-delay:0.15s}
.spinner span:nth-child(3){animation-delay:0.3s}
.spinner span:nth-child(4){animation-delay:0.45s}
@keyframes hb-spin{0%,100%{opacity:0.25}50%{opacity:1}}
@media(prefers-reduced-motion:reduce){.spinner span{animation:none;opacity:0.6}}

/* ---- HERO ---- */
.hero{padding:var(--space-lg) var(--space);text-align:center;background:var(--paper);border-bottom:4px solid var(--ink)}
.hero h1{margin:0 0 var(--space-sm)}
.hero p{max-width:560px;margin:0 auto var(--space);font-size:1.1rem;color:var(--muted)}

/* ---- ACCENT SWATCHES ---- */
.accent-swatches{display:flex;gap:0.5rem;flex-wrap:wrap}
.accent-swatch{width:36px;height:36px;border:var(--border);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform 0.1s ease}
.accent-swatch:hover{transform:translate(-1px,-1px);box-shadow:var(--shadow)}
.accent-swatch.active{box-shadow:var(--shadow);border-width:4px}
.accent-swatch[data-accent="yellow"]{background:#ffd23f}
.accent-swatch[data-accent="red"]{background:#ff4444}
.accent-swatch[data-accent="blue"]{background:#4488ff}
.accent-swatch[data-accent="green"]{background:#44cc44}
.accent-swatch[data-accent="pink"]{background:#ff66aa}
.accent-swatch[data-accent="purple"]{background:#aa66ff}

/* ---- THEME TOGGLE ---- */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:var(--control-h);min-height:var(--control-h);padding:0;background:var(--paper);border:var(--border);box-shadow:var(--shadow-sm);cursor:pointer;font-size:1.1rem;line-height:1;flex-shrink:0;transition:transform 0.1s ease,box-shadow 0.1s ease;color:var(--ink)}
.theme-toggle:hover{transform:translate(-1px,-1px);box-shadow:var(--shadow);background:var(--accent);color:var(--accent-ink)}
.theme-toggle:active{transform:translate(2px,2px);box-shadow:none}

/* ---- UTILITIES ---- */
.text-center{text-align:center}
.text-uppercase{text-transform:uppercase;letter-spacing:0.03em}
.text-muted{color:var(--muted)}
.text-sm{font-size:0.85rem}
.stack{display:flex;flex-direction:column;gap:var(--space-sm)}
.cluster{display:flex;flex-wrap:wrap;gap:var(--space-sm);align-items:center}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;top:-100px;left:0;z-index:1000;padding:0.75rem 1.5rem;background:var(--accent);color:var(--accent-ink);font-family:var(--font-display);font-weight:900;text-transform:uppercase;border:var(--border);box-shadow:var(--shadow)}
.skip-link:focus{top:0}

/* ---- REDUCED MOTION ---- */
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ======================================================================
   DARK MODE
   ====================================================================== */
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){--ink:#f0f0e8;--paper:#1a1a18;--bg:#121210;--muted:#a0a090}
}
[data-theme="dark"]{--ink:#f0f0e8;--paper:#1a1a18;--bg:#121210;--muted:#a0a090;color-scheme:dark}
[data-theme="light"]{--ink:#000;--paper:#fff;--bg:#fdfaf2;--muted:#666;color-scheme:light}
/* Everything themed above (body, inputs, code/pre/blockquote, table rows,
   navbar links, buttons, badges, theme-toggle, checkbox/radio...) already
   auto-themes correctly through --ink/--paper/--bg/--accent/--accent-ink —
   those are the tokens that just got redefined above, and every one of
   those rules already reads them directly with no dark-mode copy needed.
   Do NOT re-assert color/background for those elements here: every attempt
   at that so far has been either dead-redundant or an active bug (e.g. an
   exclusion-list rule that forced accent-ink text onto any new button-like
   class that forgot to add itself to the list — .chip/.tab, then
   .btn.btn-cancel, in turn). The only two rules that genuinely can't be
   expressed as a plain token-driven base rule are these: */
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){color-scheme:dark}
  :root:not([data-theme="light"]) a:hover{color:var(--accent-ink)}
  :root:not([data-theme="light"]) .list-row:hover,:root:not([data-theme="light"]) .list-row:active{color:var(--ink)}
}
[data-theme="dark"] a:hover{color:var(--accent-ink)}
[data-theme="dark"] .list-row:hover,[data-theme="dark"] .list-row:active{color:var(--ink)}