/* ============ tokens ============ */
:root {
  --bg: #0b0e14;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(122, 162, 255, .10), transparent 60%),
             radial-gradient(900px 500px at -10% 10%, rgba(94, 234, 212, .06), transparent 60%);
  --surface: #11151d;
  --surface-2: #161b25;
  --border: #222a38;
  --border-strong: #2f3a4d;
  --text: #e6e9f0;
  --text-2: #b7bfcf;
  --muted: #7f8aa1;
  --accent: #7aa2ff;
  --accent-2: #5eead4;
  --accent-soft: rgba(122, 162, 255, .14);
  --danger: #f87171;
  --ok: #4ade80;
  --warn: #fbbf24;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 10px 30px -12px rgba(0,0,0,.6);

  /* code */
  --code-bg: #0d1117;
  --code-head: #121824;
  --code-text: #d7dde8;
  --code-ln: #4a5468;
  --tk-comment: #6b7a90;
  --tk-keyword: #c792ea;
  --tk-type: #ffcb6b;
  --tk-string: #c3e88d;
  --tk-number: #f78c6c;
  --tk-title: #82aaff;
  --tk-meta: #89ddff;
  --tk-reg: #f07178;
  --tk-symbol: #5eead4;
  /* IDA Pro output */
  --tk-ida-arg: #7fdbca;
  --tk-ida-var: #dfe6f2;
  --tk-ida-data: #e0af68;
  --tk-ida-import: #ff9cac;
  --tk-ida-addr: #5a6a80;
  --tk-ida-bytes: #3e4a5c;
  --tk-ida-xref: #8391ad;

  --radius: 12px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(59, 99, 230, .08), transparent 60%);
  --surface: #ffffff;
  --surface-2: #f1f3f8;
  --border: #e3e7ef;
  --border-strong: #cfd6e3;
  --text: #121826;
  --text-2: #374151;
  --muted: #6b7280;
  --accent: #3b63e6;
  --accent-2: #0d9488;
  --accent-soft: rgba(59, 99, 230, .10);
  --shadow: 0 1px 2px rgba(16,24,40,.04), 0 8px 24px -12px rgba(16,24,40,.12);

  --code-bg: #fafbfd;
  --code-head: #f0f3f8;
  --code-text: #24292f;
  --code-ln: #a8b1c0;
  --tk-comment: #8a94a6;
  --tk-keyword: #8b3fd9;
  --tk-type: #b25e00;
  --tk-string: #287a2b;
  --tk-number: #c2410c;
  --tk-title: #2459d6;
  --tk-meta: #0e7490;
  --tk-reg: #c0264b;
  --tk-symbol: #0f766e;
  --tk-ida-arg: #0f766e;
  --tk-ida-var: #1e293b;
  --tk-ida-data: #a16207;
  --tk-ida-import: #be185d;
  --tk-ida-addr: #8a97ab;
  --tk-ida-bytes: #b3bdcc;
  --tk-ida-xref: #64748b;
  color-scheme: light;
}

/* ============ base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg-grad), var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font: 16px/1.65 var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.accent { color: var(--accent-2); }
::selection { background: var(--accent-soft); }

.container { max-width: 820px; margin: 0 auto; padding: 0 20px; }
.container.wide { max-width: 1400px; }

/* ============ header / footer ============ */
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: saturate(160%) blur(12px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { font-family: var(--mono); font-weight: 700; color: var(--text); font-size: 1.05rem; display: flex; align-items: center; }
.brand:hover { text-decoration: none; }
.brand .prompt { color: var(--accent-2); }
.caret { display: inline-block; width: .55em; height: 1.1em; margin-left: 3px; background: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.nav { display: flex; align-items: center; gap: 18px; font-size: .92rem; }
.nav a:not(.btn) { color: var(--text-2); }
.nav a:not(.btn):hover { color: var(--text); text-decoration: none; }

.icon-btn {
  display: inline-grid; place-items: center; width: 34px; height: 34px;
  border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }
.theme-toggle .i-sun { display: none; }
:root[data-theme="light"] .theme-toggle .i-sun { display: block; }
:root[data-theme="light"] .theme-toggle .i-moon { display: none; }

.site-footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 24px 0; font-size: .85rem; color: var(--muted); }
.site-footer .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ============ buttons / inputs ============ */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 8px 14px; border-radius: 9px; border: 1px solid var(--border-strong);
  background: var(--surface-2); color: var(--text); font: 500 .9rem var(--font);
  cursor: pointer; white-space: nowrap; transition: border-color .15s, background .15s, transform .05s;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .5; pointer-events: none; }
.btn-sm { padding: 5px 10px; font-size: .82rem; border-radius: 7px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
:root:not([data-theme="light"]) .btn-primary { color: #0b0e14; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); }
.btn kbd { font: 500 .7rem var(--mono); opacity: .7; padding: 1px 5px; border-radius: 4px; background: rgba(0,0,0,.15); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row form { margin: 0; }

input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 9px; padding: 9px 12px; width: 100%; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
label { display: grid; gap: 6px; font-size: .8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
label > input, label > select, label > textarea { text-transform: none; letter-spacing: 0; font-weight: 400; font-size: .95rem; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }

/* ============ home ============ */
.hero { padding: 64px 0 28px; }
.kicker { color: var(--muted); font-size: .88rem; margin: 0 0 10px; }
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.4rem); line-height: 1.05; margin: 0 0 14px; letter-spacing: -.035em; font-weight: 800;
  background: linear-gradient(120deg, var(--text) 30%, var(--accent) 70%, var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { color: var(--text-2); font-size: 1.12rem; margin: 0 0 24px; max-width: 60ch; }
.search { position: relative; max-width: 440px; }
.search svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.search input { padding-left: 38px; font-family: var(--mono); font-size: .9rem; }

.tag-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 36px; }
.chip {
  font: 500 .8rem var(--mono); padding: 4px 11px; border-radius: 999px; border: 1px solid var(--border);
  color: var(--text-2); background: var(--surface);
}
.chip span { color: var(--muted); margin-left: 2px; }
.chip:hover { border-color: var(--accent); text-decoration: none; color: var(--text); }
.chip.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.section-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin: 0 0 14px; font-weight: 600; }
.post-list { display: grid; gap: 14px; }
.post-card { padding: 22px 24px; transition: border-color .2s, transform .2s; position: relative; }
.post-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.post-card h2 { margin: 6px 0 6px; font-size: 1.3rem; letter-spacing: -.015em; line-height: 1.3; }
.post-card h2 a { color: var(--text); }
.post-card h2 a::after { content: ''; position: absolute; inset: 0; }
.post-card h2 a:hover { text-decoration: none; color: var(--accent); }
.post-card .summary { margin: 0 0 12px; color: var(--text-2); }
.post-card .tags { position: relative; z-index: 1; }
.meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; color: var(--muted); font-size: .8rem; }
.tags { display: flex; gap: 10px; flex-wrap: wrap; }
.tag { font: 500 .8rem var(--mono); color: var(--accent-2); }
.empty { padding: 40px; text-align: center; color: var(--muted); }
.empty .btn { margin-top: 10px; }

/* ============ post ============ */
.banner { margin-top: 20px; padding: 10px 16px; border-radius: 10px; background: color-mix(in srgb, var(--warn) 14%, transparent); border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent); font-size: .9rem; }
.post-header { padding: 56px 0 24px; border-bottom: 1px solid var(--border); margin-bottom: 32px; }
.post-header h1 { font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.12; letter-spacing: -.03em; margin: 12px 0 14px; font-weight: 800; }
.post-header .lead { margin: 18px 0 0; }
.edit-link { margin-left: auto; font-family: var(--font); }
.toc { padding: 14px 20px; margin-bottom: 32px; font-size: .92rem; }
.toc summary { cursor: pointer; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.toc ol { margin: 10px 0 0; padding-left: 18px; }
.toc li.d3 { margin-left: 16px; list-style: circle; }
.toc a { color: var(--text-2); }
.post-footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); }

/* ============ prose ============ */
.prose { font-size: 1.04rem; color: var(--text-2); overflow-wrap: break-word; }
.prose > :first-child { margin-top: 0; }
.prose h2, .prose h3, .prose h4 { color: var(--text); letter-spacing: -.02em; line-height: 1.3; position: relative; }
.prose h2 { font-size: 1.6rem; margin: 2.2em 0 .6em; }
.prose h3 { font-size: 1.25rem; margin: 1.8em 0 .5em; }
.prose h4 { font-size: 1.05rem; margin: 1.5em 0 .4em; }
.prose .anchor { position: absolute; left: -1em; color: var(--muted); opacity: 0; font-weight: 400; transition: opacity .15s; }
.prose h2:hover .anchor, .prose h3:hover .anchor, .prose h4:hover .anchor { opacity: 1; text-decoration: none; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.15em; }
.prose li { margin: .3em 0; }
.prose li::marker { color: var(--muted); }
.prose strong { color: var(--text); }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.5em 0; }
.prose img, .prose video { max-width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--border); display: block; margin: 1.5em auto; }
.prose blockquote {
  margin: 1.5em 0; padding: .8em 1.2em; border-left: 3px solid var(--accent);
  background: var(--accent-soft); border-radius: 0 10px 10px 0; color: var(--text);
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose :not(pre) > code {
  font: .86em var(--mono); background: var(--surface-2); border: 1px solid var(--border);
  padding: .12em .4em; border-radius: 6px; color: var(--text);
}
.prose a.attachment::before { content: '📎 '; }
.table-wrap { overflow-x: auto; margin: 1.5em 0; border: 1px solid var(--border); border-radius: 10px; }
.prose table { border-collapse: collapse; width: 100%; font-size: .92rem; }
.prose th, .prose td { padding: 9px 14px; border-bottom: 1px solid var(--border); text-align: left; }
.prose th { background: var(--surface-2); color: var(--text); font-weight: 600; }
.prose tr:last-child td { border-bottom: 0; }
.prose iframe { max-width: 100%; border: 0; border-radius: 10px; }
.prose input[type="checkbox"] { width: auto; margin-right: 6px; }

/* ============ code blocks ============ */
.code-block {
  margin: 1.6em 0; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--code-bg); overflow: hidden; box-shadow: var(--shadow);
}
.code-block figcaption {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px 7px 14px;
  background: var(--code-head); border-bottom: 1px solid var(--border);
  font: 500 .74rem var(--mono); color: var(--muted);
}
.code-lang { text-transform: uppercase; letter-spacing: .06em; color: var(--accent-2); font-weight: 700; }
.code-file { color: var(--text-2); }
.code-file::before { content: '—'; margin-right: 10px; color: var(--border-strong); }
.copy-btn {
  margin-left: auto; font: 500 .72rem var(--mono); color: var(--muted); background: transparent;
  border: 1px solid var(--border); border-radius: 6px; padding: 3px 9px; cursor: pointer;
}
.copy-btn:hover { color: var(--text); border-color: var(--border-strong); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }
.code-block pre { margin: 0; padding: 14px 0; overflow-x: auto; }
.code-block code {
  display: block; min-width: max-content; font: 400 .86rem/1.65 var(--mono); color: var(--code-text);
  tab-size: 4; counter-reset: ln;
}
.code-block .line { display: block; padding: 0 18px; min-height: 1.65em; }
.code-block.numbered .line { padding-left: 0; }
.code-block.numbered .line::before {
  counter-increment: ln; content: counter(ln);
  display: inline-block; width: 3.2em; padding-right: 1.1em; margin-right: .2em; text-align: right;
  color: var(--code-ln); user-select: none; -webkit-user-select: none;
}
.code-block .line:hover { background: rgba(127, 138, 161, .07); }

/* highlight.js tokens */
.hljs-comment, .hljs-quote { color: var(--tk-comment); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-doctag { color: var(--tk-keyword); }
.hljs-type, .hljs-built_in, .hljs-class .hljs-title { color: var(--tk-type); }
.hljs-string, .hljs-regexp, .hljs-addition, .hljs-char.escape_ { color: var(--tk-string); }
.hljs-number, .hljs-literal { color: var(--tk-number); }
.hljs-title, .hljs-title.function_, .hljs-section { color: var(--tk-title); }
.hljs-meta, .hljs-meta .hljs-keyword { color: var(--tk-meta); }
.hljs-meta .hljs-string { color: var(--tk-string); }
.hljs-variable, .hljs-template-variable, .hljs-attr, .hljs-params { color: var(--tk-reg); }
.hljs-symbol, .hljs-bullet, .hljs-link { color: var(--tk-symbol); }
.hljs-deletion { color: var(--danger); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 700; }
/* Assembly: registers are "variable"/"built_in", labels "symbol" */
.language-x86asm .hljs-built_in, .language-armasm .hljs-built_in { color: var(--tk-reg); }
.language-x86asm .hljs-keyword, .language-armasm .hljs-keyword { color: var(--tk-keyword); font-weight: 500; }

/* IDA Pro: pseudocode + disassembly listings */
.code-block.ida .code-lang { color: var(--tk-ida-data); }
.code-block.ida .code-lang::before { content: '◆ '; font-size: .9em; }
.hljs-ida-func { color: var(--tk-title); }
.hljs-ida-data { color: var(--tk-ida-data); }
.hljs-ida-import { color: var(--tk-ida-import); }
.hljs-ida-arg { color: var(--tk-ida-arg); }
.hljs-ida-var { color: var(--tk-ida-var); font-weight: 500; }
.hljs-ida-stack { color: var(--tk-ida-xref); font-style: normal; }
.hljs-ida-addr { color: var(--tk-ida-addr); user-select: none; -webkit-user-select: none; }
.hljs-ida-bytes { color: var(--tk-ida-bytes); user-select: none; -webkit-user-select: none; }
.hljs-ida-xref { color: var(--tk-ida-xref); font-style: normal; font-weight: 700; }
.hljs-ida-sep { opacity: .6; }
.language-ida-asm .hljs-built_in { color: var(--tk-reg); }
.language-ida-asm .hljs-meta { color: var(--tk-meta); }
.language-ida-asm .hljs-symbol { color: var(--tk-symbol); font-weight: 600; }
.ida-gap { user-select: none; -webkit-user-select: none; }
.code-block.hide-addr .hljs-ida-addr, .code-block.hide-addr .hljs-ida-bytes, .code-block.hide-addr .ida-gap { display: none; }
.addr-btn {
  margin-left: auto; font: 500 .72rem var(--mono); color: var(--muted); background: transparent;
  border: 1px solid var(--border); border-radius: 6px; padding: 3px 9px; cursor: pointer;
}
.addr-btn + .copy-btn { margin-left: 0; }
.addr-btn[aria-pressed="true"] { color: var(--tk-ida-data); border-color: color-mix(in srgb, var(--tk-ida-data) 45%, transparent); }
.addr-btn:hover { color: var(--text); }

/* ============ admin ============ */
.admin-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; padding: 36px 0 20px; }
.admin-head h1 { margin: 0 0 4px; font-size: 1.8rem; letter-spacing: -.02em; }
.admin-head p { margin: 0; }
.table-card { overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.admin-table th { text-align: left; font-size: .74rem; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); padding: 12px 16px; border-bottom: 1px solid var(--border); font-weight: 600; }
.admin-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.admin-table tr:last-child td { border-bottom: 0; }
.admin-table tr:hover td { background: var(--surface-2); }
.row-title { color: var(--text); font-weight: 600; }
.actions { text-align: right; white-space: nowrap; }
.status { font: 600 .72rem var(--mono); text-transform: uppercase; padding: 3px 8px; border-radius: 999px; letter-spacing: .04em; }
.status.published { color: var(--ok); background: color-mix(in srgb, var(--ok) 13%, transparent); }
.status.draft { color: var(--warn); background: color-mix(in srgb, var(--warn) 13%, transparent); }

.auth { max-width: 400px; margin: 80px auto; padding: 32px; }
.auth h1 { margin: 0 0 4px; }
.auth form { display: grid; gap: 16px; margin-top: 20px; }
.alert { color: var(--danger); background: color-mix(in srgb, var(--danger) 12%, transparent); padding: 8px 12px; border-radius: 8px; font-size: .9rem; }
.inline-pre { background: var(--code-bg); border: 1px solid var(--border); padding: 12px 16px; border-radius: 8px; font-family: var(--mono); }

/* ============ editor ============ */
.editor-page .site-footer { display: none; }
.editor { display: flex; flex-direction: column; gap: 12px; padding: 20px 0; height: calc(100vh - 61px); min-height: 640px; }
.editor-meta { display: grid; gap: 12px; }
.title-input {
  font-size: 1.7rem; font-weight: 800; letter-spacing: -.02em; border: 0; background: transparent; padding: 4px 0; border-radius: 0;
  border-bottom: 1px solid transparent;
}
.title-input:focus { box-shadow: none; border-bottom-color: var(--accent); }
.meta-grid { display: grid; grid-template-columns: 1fr 1.4fr 160px; gap: 12px; }
.summary-label textarea { resize: vertical; min-height: 44px; }

.toolbar {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 6px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
}
.tool-group { display: flex; gap: 2px; align-items: center; flex-wrap: wrap; }
.tool-group + .tool-group { padding-left: 8px; border-left: 1px solid var(--border); }
.tool-group.right { margin-left: auto; border-left: 0; }
.toolbar button {
  font: 500 .84rem var(--font); background: transparent; color: var(--text-2); border: 1px solid transparent;
  border-radius: 7px; padding: 5px 9px; cursor: pointer; min-width: 32px;
}
.toolbar button:hover { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.toolbar .accent-btn { color: var(--accent-2); font-family: var(--mono); font-weight: 700; }
.dropdown { position: relative; }
.menu {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 30; min-width: 220px; display: none;
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: 10px; padding: 6px; box-shadow: var(--shadow);
}
.menu.open { display: grid; }
.menu button { text-align: left; width: 100%; font-family: var(--mono); font-size: .82rem; }
.seg { display: inline-flex; background: var(--surface-2); border-radius: 8px; padding: 2px; border: 1px solid var(--border); }
.seg button { border-radius: 6px; padding: 4px 12px; }
.seg button.active { background: var(--surface); color: var(--text); border-color: var(--border-strong); }

.panes { flex: 1; min-height: 0; display: grid; gap: 12px; }
.panes.view-split { grid-template-columns: 1fr 1fr; }
.panes.view-write .pane-preview, .panes.view-preview .pane-write { display: none; }
.pane { min-height: 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; position: relative; }
.pane-write textarea {
  width: 100%; height: 100%; border: 0; border-radius: 0; resize: none; padding: 18px 20px;
  font: .9rem/1.7 var(--mono); background: transparent; tab-size: 4;
}
.pane-write textarea:focus { box-shadow: none; }
.pane-write.dragging { border-color: var(--accent); }
.drop-hint {
  position: absolute; inset: 8px; border: 2px dashed var(--accent); border-radius: 10px; display: none; place-items: center;
  background: color-mix(in srgb, var(--bg) 70%, transparent); color: var(--accent); font: 600 1rem var(--mono); pointer-events: none;
}
.pane-write.dragging .drop-hint { display: grid; }
.pane-preview { overflow-y: auto; padding: 24px 28px; }
.pane-preview .prose { max-width: 760px; margin: 0 auto; }
.panes.view-preview .pane-preview { padding: 32px 40px; }

.editor-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.save-state { color: var(--muted); }
.save-state.dirty { color: var(--warn); }
.save-state.ok { color: var(--ok); }
.save-state.err { color: var(--danger); }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px); opacity: 0;
  background: var(--surface); border: 1px solid var(--border-strong); padding: 10px 16px; border-radius: 10px;
  box-shadow: var(--shadow); font-size: .9rem; transition: all .2s; z-index: 50; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%); }

/* ============ media ============ */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.media-item { padding: 10px; display: grid; gap: 10px; }
.thumb { aspect-ratio: 16/10; border-radius: 8px; background: var(--surface-2); display: grid; place-items: center; overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.file-ext { font-size: 1.3rem; font-weight: 700; color: var(--accent-2); text-transform: uppercase; }
.media-info .name { font-weight: 600; font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
body.dragging-page::after {
  content: 'Drop to upload'; position: fixed; inset: 12px; border: 2px dashed var(--accent); border-radius: 16px;
  display: grid; place-items: center; font: 600 1.2rem var(--mono); color: var(--accent);
  background: color-mix(in srgb, var(--bg) 75%, transparent); z-index: 100; pointer-events: none;
}

.error-page { text-align: center; padding-top: 100px; }
.error-page h1 { font-size: 6rem; }
.error-page .lead { margin: 0 auto 24px; }

/* ============ responsive ============ */
@media (max-width: 900px) {
  .panes.view-split { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
  .meta-grid { grid-template-columns: 1fr 1fr; }
  .meta-grid label:last-child { grid-column: span 2; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .nav { gap: 12px; }
  .nav a[href="/rss.xml"] { display: none; }
  .hero { padding-top: 40px; }
  .post-card { padding: 18px; }
  .prose .anchor { display: none; }
  .code-block { margin-left: -16px; margin-right: -16px; border-radius: 0; border-left: 0; border-right: 0; }
  .editor { height: auto; }
  .panes, .panes.view-split { grid-template-columns: 1fr; grid-template-rows: none; }
  .pane-write textarea { min-height: 60vh; }
  .pane-preview { padding: 16px; }
  .meta-grid { grid-template-columns: 1fr; }
  .meta-grid label:last-child { grid-column: auto; }
  .tool-group.right { margin-left: 0; }
  .admin-table .tags, .admin-table th:nth-child(3) { display: none; }
}