:root {
  color-scheme: light dark;
  --color-accent: #660099; --color-accent-hover: #52007a; --color-background: #f7f5f9;
  --color-surface: #fff; --color-surface-raised: #fff; --color-text: #1d1821; --color-muted: #6d6472;
  --color-border: #ddd6e2; --color-success: #176c38; --color-warning: #8a5700; --color-danger: #a40016; --color-info: #155f86;
  --accent: var(--color-accent); --accent-hover: var(--color-accent-hover); --bg: var(--color-background); --surface: var(--color-surface); --text: var(--color-text); --muted: var(--color-muted); --border: var(--color-border);
  --success: var(--color-success); --warning: var(--color-warning); --danger: var(--color-danger); --info: var(--color-info);
  --space-1: .25rem; --space-2: .5rem; --space-3: .75rem; --space-4: 1rem; --space-5: 1.5rem; --space-6: 2rem; --space-8: 3rem;
  --radius-sm: .5rem; --radius-md: .75rem; --radius-lg: 1rem; --radius-xl: 1.5rem; --radius: var(--radius-lg);
  --shadow-sm: 0 3px 12px rgba(35, 20, 43, .07); --shadow-md: 0 12px 35px rgba(35, 20, 43, .1); --shadow-lg: 0 28px 80px rgba(26, 10, 37, .2);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { min-width: 320px; }
body { min-height: 100vh; margin: 0; background: var(--color-background); color: var(--color-text); font-size: 1rem; line-height: 1.55; }
a { color: var(--color-accent); text-underline-offset: .2em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.025em; }
h1 { margin-bottom: var(--space-3); font-size: clamp(1.8rem, 4vw, 2.55rem); }
h2 { margin-bottom: var(--space-4); font-size: clamp(1.25rem, 2vw, 1.55rem); }
p { margin-bottom: var(--space-4); }
small, .muted { color: var(--color-muted); }
button, .button { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: 44px; padding: .68rem 1.1rem; border: 1px solid transparent; border-radius: var(--radius-md); font: inherit; font-weight: 750; line-height: 1.2; text-decoration: none; cursor: pointer; transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease; }
button:hover, .button:hover { transform: translateY(-1px); }
button:active, .button:active { transform: translateY(0) scale(.99); }
button:disabled, .button[aria-disabled="true"] { opacity: .52; cursor: not-allowed; transform: none; box-shadow: none; }
.primary, button:not([class]) { background: var(--color-accent); color: #fff; box-shadow: 0 7px 20px rgba(102, 0, 153, .2); }
.primary:hover, button:not([class]):hover { background: var(--color-accent-hover); box-shadow: 0 9px 24px rgba(102, 0, 153, .25); }
.secondary { border-color: var(--color-border); background: var(--color-surface); color: var(--color-text); box-shadow: var(--shadow-sm); }
.secondary:hover { border-color: color-mix(in srgb, var(--color-accent) 30%, var(--color-border)); background: color-mix(in srgb, var(--color-accent) 4%, var(--color-surface)); }
.ghost { border-color: transparent; background: transparent; color: var(--color-text); }
.ghost:hover { background: color-mix(in srgb, var(--color-accent) 7%, transparent); }
.danger { background: var(--color-danger); color: #fff; }
.danger-ghost { border-color: color-mix(in srgb, var(--color-danger) 38%, var(--color-border)); background: transparent; color: var(--color-danger); }
.danger-ghost:hover { background: color-mix(in srgb, var(--color-danger) 7%, transparent); }
.small { min-height: 38px; padding: .48rem .8rem; font-size: .9rem; }
:focus-visible { outline: 3px solid #bd62e5; outline-offset: 3px; }
.form-stack, .field-stack { display: grid; gap: var(--space-5); }
.form-group { display: grid; gap: var(--space-2); }
.form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-2); }
label { font-weight: 720; }
input, textarea, select { width: 100%; min-height: 46px; padding: .72rem .8rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); color: var(--color-text); font: inherit; transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease; }
input:hover, textarea:hover { border-color: color-mix(in srgb, var(--color-accent) 30%, var(--color-border)); }
input:focus, textarea:focus { border-color: var(--color-accent); outline: 0; box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 16%, transparent); }
input[type="file"] { padding: .48rem; }
textarea { min-height: 108px; resize: vertical; }
.choice { display: flex; align-items: center; gap: var(--space-2); font-weight: 520; }
.choice input { width: auto; min-height: auto; margin: 0; accent-color: var(--color-accent); }
fieldset { min-width: 0; margin: 0; padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
fieldset > label:not(.choice) { display: block; margin-top: var(--space-4); }
fieldset > input, fieldset > textarea { margin-top: var(--space-2); }
fieldset > .choice + .choice { margin-top: var(--space-3); }
legend { padding: 0 var(--space-2); font-weight: 800; }
.eyebrow { margin-bottom: var(--space-2); color: var(--color-accent); font-size: .76rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.notice { margin: 0; padding: .85rem 1rem; border: 1px solid; border-left-width: 4px; border-radius: var(--radius-md); background: var(--color-surface); animation: enter 200ms ease both; }
.notice:empty { display: none; }
.notice.success { border-color: color-mix(in srgb, var(--color-success) 45%, var(--color-border)); background: color-mix(in srgb, var(--color-success) 7%, var(--color-surface)); }
.notice.info { border-color: color-mix(in srgb, var(--color-info) 45%, var(--color-border)); background: color-mix(in srgb, var(--color-info) 7%, var(--color-surface)); }
.notice.warning { border-color: color-mix(in srgb, var(--color-warning) 45%, var(--color-border)); background: color-mix(in srgb, var(--color-warning) 7%, var(--color-surface)); }
.notice.error { border-color: color-mix(in srgb, var(--color-danger) 48%, var(--color-border)); background: color-mix(in srgb, var(--color-danger) 7%, var(--color-surface)); }

/* Public glass experience */
.theme-glass, .auth-page { position: relative; isolation: isolate; overflow-x: hidden; background: #eee8f2; }
.theme-glass::before, .theme-glass::after, .auth-page::before { position: fixed; z-index: -2; content: ""; pointer-events: none; will-change: transform; }
.theme-glass::before { inset: -28vmax -18vmax auto auto; width: 78vmax; height: 72vmax; border-radius: 50%; background: radial-gradient(circle at 38% 42%, rgba(139, 48, 181, .56), rgba(102, 0, 153, .28) 35%, rgba(62, 21, 88, .08) 62%, transparent 72%); filter: blur(35px); animation: glass-drift-a 29s ease-in-out infinite alternate; }
.theme-glass::after { inset: auto auto -36vmax -28vmax; width: 82vmax; height: 76vmax; border-radius: 45%; background: radial-gradient(circle at 58% 45%, rgba(185, 108, 165, .32), rgba(64, 20, 99, .25) 42%, rgba(255,255,255,.08) 66%, transparent 73%); filter: blur(42px); animation: glass-drift-b 35s ease-in-out infinite alternate; }
.public-shell, .auth-shell { display: grid; min-height: 100vh; min-height: 100svh; padding: clamp(var(--space-4), 5vh, var(--space-8)) var(--space-4); place-items: center; }
.public-card, .login { position: relative; width: min(100%, 680px); padding: clamp(1.4rem, 5vw, 3rem); border: 1px solid rgba(255,255,255,.72); border-radius: clamp(1.15rem, 3vw, 1.75rem); background-color: rgba(255,255,255,.9); box-shadow: 0 32px 90px rgba(45, 13, 65, .22), 0 8px 30px rgba(40, 18, 53, .12), inset 0 1px 0 rgba(255,255,255,.85), inset 0 0 0 1px rgba(102,0,153,.035); animation: enter 220ms ease both; }
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) { .theme-glass .public-card, .auth-page .login { background: linear-gradient(145deg, rgba(255,255,255,.76), rgba(255,255,255,.53)); -webkit-backdrop-filter: blur(28px) saturate(135%); backdrop-filter: blur(28px) saturate(135%); } }
.brand { display: flex; min-height: 44px; align-items: center; }
.public-card > .brand, .login > .brand { justify-content: center; margin-bottom: var(--space-6); }
.brand-logo { display: block; width: auto; max-width: min(260px, 72vw); height: auto; max-height: 84px; object-fit: contain; }
.brand-fallback { color: var(--color-text); font-size: .85rem; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.brand-fallback span { color: var(--color-accent); font-weight: 900; }
.public-heading, .auth-heading { margin-bottom: var(--space-6); }
.public-heading { text-align: center; }
.public-intro, .auth-heading p:last-child { max-width: 56ch; margin-right: auto; margin-bottom: 0; margin-left: auto; color: var(--color-muted); }
.access { max-width: 580px; }
.access .form-actions .button, .login .form-actions .button { width: 100%; }
.theme-glass input { border-color: rgba(102, 0, 153, .14); background: rgba(255,255,255,.62); box-shadow: inset 0 1px 2px rgba(49,20,61,.04); }
.file-section { margin-top: var(--space-6); }
.files { display: grid; gap: var(--space-3); margin: 0; padding: 0; list-style: none; }
.files li { display: flex; min-width: 0; align-items: center; gap: var(--space-4); padding: var(--space-3) var(--space-4); border: 1px solid rgba(102,0,153,.12); border-radius: var(--radius-lg); background: rgba(255,255,255,.48); transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease; }
.files li:hover { transform: translateY(-1px); border-color: rgba(102,0,153,.27); background: rgba(255,255,255,.65); }
.file-meta { display: grid; min-width: 0; flex: 1; gap: .1rem; }
.file-meta strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.download-button { display: grid; width: 44px; height: 44px; flex: 0 0 44px; border: 1px solid rgba(102,0,153,.18); border-radius: var(--radius-md); background: rgba(255,255,255,.55); place-items: center; transition: transform 160ms ease, background-color 160ms ease; }
.download-button:hover { transform: translateY(-1px); background: #fff; }
.expiry { margin: var(--space-5) 0 0; color: var(--color-muted); text-align: center; }
.public-error { max-width: 560px; text-align: center; }
.public-error .form-actions { justify-content: center; }
.status-icon { display: grid; width: 42px; height: 42px; margin: 0 auto var(--space-4); border-radius: 50%; background: color-mix(in srgb, var(--color-accent) 10%, transparent); color: var(--color-accent); font-weight: 850; place-items: center; }
.theme-minimal { background: var(--color-background); }
.theme-minimal .public-card { border-color: var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-md); }
.theme-minimal .files li { border-color: var(--color-border); background: var(--color-background); }

/* Administration */
.admin-header { position: sticky; top: 0; z-index: 10; display: flex; min-height: 72px; align-items: center; gap: var(--space-6); padding: var(--space-3) max(4vw, var(--space-4)); border-bottom: 1px solid color-mix(in srgb, var(--color-border) 75%, transparent); background: rgba(255,255,255,.86); -webkit-backdrop-filter: blur(18px) saturate(125%); backdrop-filter: blur(18px) saturate(125%); }
.admin-brand { color: var(--color-text); text-decoration: none; }
.admin-brand .brand { min-width: 112px; }
.admin-logo { display: block; width: auto; max-width: 160px; height: auto; max-height: 44px; object-fit: contain; }
.admin-header nav { display: flex; flex: 1; gap: var(--space-2); }
.admin-header nav a { position: relative; padding: .55rem .7rem; border-radius: var(--radius-sm); color: var(--color-muted); font-weight: 680; text-decoration: none; }
.admin-header nav a:hover, .admin-header nav a.active { background: color-mix(in srgb, var(--color-accent) 7%, transparent); color: var(--color-accent); }
.admin-header nav a.active::after { position: absolute; right: .7rem; bottom: .22rem; left: .7rem; height: 2px; border-radius: 2px; background: var(--color-accent); content: ""; }
.admin main { width: min(1180px, calc(100% - 2rem)); margin: clamp(1.5rem, 4vw, 2.75rem) auto var(--space-8); animation: enter 200ms ease both; }
.content-stack { display: grid; gap: var(--space-5); }
.card { padding: clamp(1rem, 2.5vw, 1.6rem); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-sm); }
.page-header, .section-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); }
.page-header { margin-bottom: var(--space-2); }
.page-header h1 { margin-bottom: var(--space-2); }
.page-header p:last-child { margin-bottom: 0; color: var(--color-muted); }
.section-heading { margin-bottom: var(--space-4); }
.section-heading h2 { margin-bottom: 0; }
.cards, .summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-4); }
.kpi { position: relative; min-height: 128px; display: flex; flex-direction: column; justify-content: center; overflow: hidden; }
.kpi::before { position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--color-accent); content: ""; opacity: .65; }
.kpi b { font-size: 2.25rem; line-height: 1; }
.kpi span { margin-top: var(--space-2); color: var(--color-muted); }
.summary-grid { margin: 0; }
.summary-grid div { display: grid; gap: var(--space-1); }
.summary-grid span { color: var(--color-muted); }
.stack { display: grid; max-width: 800px; gap: var(--space-6); }
.badge { display: inline-flex; width: max-content; align-items: center; padding: .28rem .6rem; border-radius: 99px; background: rgba(100,90,108,.12); font-size: .78rem; font-weight: 800; }
.status-published { background: color-mix(in srgb, var(--color-success) 12%, transparent); color: var(--color-success); }
.status-draft { background: color-mix(in srgb, var(--color-warning) 11%, transparent); color: var(--color-warning); }
.status-revoked, .status-expired, .status-deleted { background: color-mix(in srgb, var(--color-danger) 10%, transparent); color: var(--color-danger); }
.list { display: grid; }
.list > a { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border); color: var(--color-text); text-decoration: none; }
.list > a:first-child { padding-top: 0; }.list > a:last-child { padding-bottom: 0; border-bottom: 0; }
.list > a span:first-child { display: grid; min-width: 0; }
.transfer-table { padding-top: 0; padding-bottom: 0; }
.transfer-head, .transfer-table article { display: grid; grid-template-columns: minmax(180px, 2fr) repeat(4, minmax(105px, 1fr)) auto; align-items: center; gap: var(--space-4); }
.transfer-head { padding: .85rem 0; border-bottom: 1px solid var(--color-border); color: var(--color-muted); font-size: .75rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.transfer-table article { padding: var(--space-4) 0; border-bottom: 1px solid var(--color-border); }
.transfer-table article:last-child { border-bottom: 0; }
.transfer-table article > div { display: grid; min-width: 0; }
.dropzone { display: grid; gap: var(--space-3); margin: var(--space-5) 0; padding: var(--space-5); border: 1px dashed color-mix(in srgb, var(--color-accent) 40%, var(--color-border)); border-radius: var(--radius-lg); background: color-mix(in srgb, var(--color-accent) 2%, var(--color-surface)); transition: border-color 160ms ease, background-color 160ms ease; }
.dropzone:hover, .dropzone:focus-within { border-color: var(--color-accent); background: color-mix(in srgb, var(--color-accent) 5%, var(--color-surface)); }
.dropzone .button { width: max-content; margin-top: var(--space-2); }
.file-list { margin: var(--space-4) 0 0; padding: 0; list-style: none; }
.file-list li { display: flex; min-width: 0; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.file-list li > div { display: grid; min-width: 0; flex: 1; }.file-list strong { overflow-wrap: anywhere; }
.action-panel, .danger-zone { display: grid; gap: var(--space-3); }
.action-panel h2, .danger-zone h2, .action-panel p, .danger-zone p { margin-bottom: 0; }
.danger-zone { border-color: color-mix(in srgb, var(--color-danger) 38%, var(--color-border)); background: color-mix(in srgb, var(--color-danger) 3%, var(--color-surface)); }
.pagination { display: flex; justify-content: flex-end; gap: var(--space-3); }.back-link { width: max-content; }
.settings-section { display: grid; gap: var(--space-5); }.section-copy h2, .section-copy p { margin-bottom: var(--space-2); }.section-copy p { color: var(--color-muted); }
.logo-preview { display: grid; min-height: 150px; padding: var(--space-5); border: 1px solid var(--color-border); border-radius: var(--radius-md); background-color: #f4f1f5; background-image: linear-gradient(45deg,#e8e3ea 25%,transparent 25%),linear-gradient(-45deg,#e8e3ea 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e8e3ea 75%),linear-gradient(-45deg,transparent 75%,#e8e3ea 75%); background-position: 0 0,0 8px,8px -8px,-8px 0; background-size: 16px 16px; place-items: center; }
.logo-preview img { display: block; max-width: 280px; max-height: 100px; object-fit: contain; }
.subtle-action { padding-top: var(--space-4); border-top: 1px solid var(--color-border); }.credential-list { margin: 0; padding-left: 1.2rem; }
.auth-page::before { inset: -30vmax; border-radius: 50%; background: radial-gradient(circle at 35% 35%, rgba(102,0,153,.25), transparent 45%), radial-gradient(circle at 75% 70%, rgba(167,101,157,.18), transparent 38%); filter: blur(35px); animation: glass-drift-a 42s ease-in-out infinite alternate; }
.login { max-width: 480px; border-color: rgba(255,255,255,.6); }.auth-heading { text-align: center; }.flash-stack { display: grid; gap: var(--space-3); }
.empty-state { color: var(--color-muted); }.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@keyframes enter { from { opacity: 0; transform: translateY(7px); } }
@keyframes glass-drift-a { 0% { transform: translate3d(-25px,-12px,0) scale(1); } 55% { transform: translate3d(42px,28px,0) scale(1.07); } 100% { transform: translate3d(12px,58px,0) scale(1.02); } }
@keyframes glass-drift-b { 0% { transform: translate3d(15px,24px,0) scale(1.02); opacity: .85; } 50% { transform: translate3d(62px,-35px,0) scale(1.08); opacity: 1; } 100% { transform: translate3d(-30px,-12px,0) scale(1); opacity: .9; } }
@media (prefers-color-scheme: dark) {
  :root { --color-background: #0d0911; --color-surface: #19131e; --color-surface-raised: #211827; --color-text: #faf6fc; --color-muted: #c5b9ca; --color-border: #44374c; --shadow-sm: 0 4px 16px rgba(0,0,0,.22); --shadow-md: 0 14px 38px rgba(0,0,0,.3); }
  .theme-glass, .auth-page { background: #0b0710; }
  .theme-glass::before { background: radial-gradient(circle at 38% 42%, rgba(124,31,169,.48), rgba(71,8,102,.32) 38%, rgba(25,8,39,.14) 64%, transparent 73%); }
  .theme-glass::after { background: radial-gradient(circle at 58% 45%, rgba(130,55,119,.3), rgba(48,11,72,.35) 44%, rgba(8,5,12,.12) 68%, transparent 74%); }
  .public-card, .login { border-color: rgba(255,255,255,.14); background-color: rgba(20,13,26,.91); box-shadow: 0 34px 100px rgba(0,0,0,.5), 0 10px 34px rgba(75,16,104,.2), inset 0 1px 0 rgba(255,255,255,.1), inset 0 0 0 1px rgba(154,70,195,.05); }
  @supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) { .theme-glass .public-card, .auth-page .login { background: linear-gradient(145deg, rgba(28,18,36,.76), rgba(13,8,19,.62)); } }
  .theme-glass input { border-color: rgba(255,255,255,.13); background: rgba(12,8,17,.5); }
  .files li { border-color: rgba(255,255,255,.1); background: rgba(25,16,32,.52); }.files li:hover { border-color: rgba(191,107,226,.28); background: rgba(35,22,43,.68); }.download-button { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.06); }.download-button:hover { background: rgba(255,255,255,.11); }
  .admin-header { background: rgba(18,13,22,.87); }.logo-preview { background-color: #211b25; background-image: linear-gradient(45deg,#302836 25%,transparent 25%),linear-gradient(-45deg,#302836 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#302836 75%),linear-gradient(-45deg,transparent 75%,#302836 75%); }
}
@media (max-width: 900px) {
  .admin-header { align-items: flex-start; flex-wrap: wrap; gap: var(--space-3); }
  .admin-header nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: var(--space-1); }
  .logout-form { margin-left: auto; }
  .transfer-head { display: none; }
  .transfer-table { display: grid; gap: var(--space-3); padding: var(--space-3); border: 0; background: transparent; box-shadow: none; }
  .transfer-table article { grid-template-columns: 1fr auto; gap: var(--space-3); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); box-shadow: var(--shadow-sm); }
  .transfer-table article > span:not(.badge) { display: grid; grid-column: 1 / -1; grid-template-columns: 8rem 1fr; gap: var(--space-2); }
  .transfer-table article > span:not(.badge)::before { color: var(--color-muted); content: attr(data-label); font-size: .82rem; font-weight: 700; }
}
@media (max-width: 640px) {
  .public-shell, .auth-shell { align-items: center; padding: var(--space-3); }
  .public-card, .login { padding: 1.35rem; border-radius: var(--radius-lg); }
  .public-card > .brand, .login > .brand { margin-bottom: var(--space-5); }
  .brand-logo { max-height: 72px; }
  .page-header { align-items: stretch; flex-direction: column; }.page-header > .button { width: 100%; }
  .cards { grid-template-columns: 1fr; }.kpi { min-height: 104px; }
  .file-list li { align-items: flex-start; flex-wrap: wrap; }.file-list li form { width: 100%; }.file-list li form .button { width: 100%; }
  .form-actions > .button, .form-actions > button { width: 100%; }
  .summary-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}
@media (max-width: 420px) {
  .admin main { width: min(100% - 1rem, 1180px); margin-top: var(--space-4); }.card { padding: var(--space-4); }
  .admin-header { padding: var(--space-3); }.admin-header nav { gap: var(--space-1); }.admin-header nav a { padding: .5rem; font-size: .88rem; }
  .files li { padding: var(--space-3); }.file-meta strong { white-space: normal; overflow-wrap: anywhere; }
  .transfer-table article > span:not(.badge) { grid-template-columns: 1fr; gap: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
  .theme-glass::before, .theme-glass::after, .auth-page::before { transform: none !important; will-change: auto; }
}

/* Error pages */
.error-shell { display: grid; min-height: 100vh; min-height: 100svh; padding: clamp(.75rem, 4vw, 2rem); place-items: center; }
.error-card { max-width: 620px; text-align: center; }
.error-brand { margin-bottom: var(--space-6); color: var(--color-muted); font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; }
.error-brand strong { color: var(--color-accent); }
.error-card .public-heading { margin-bottom: 0; }

/* Integrated API documentation */
.api-docs-layout { display: grid; grid-template-columns: minmax(190px, 240px) minmax(0, 1fr); align-items: start; gap: var(--space-5); }
.api-docs-nav { position: sticky; top: 90px; max-height: calc(100vh - 110px); overflow-y: auto; }
.api-docs-nav ol { display: grid; gap: .42rem; margin: var(--space-3) 0 0; padding-left: 1.35rem; }
.api-docs-nav a { color: var(--color-muted); font-size: .92rem; text-decoration: none; }
.api-docs-nav a:hover { color: var(--color-accent); text-decoration: underline; }
.api-docs-content { display: grid; min-width: 0; max-width: 860px; gap: var(--space-5); }
.api-doc-section { min-width: 0; scroll-margin-top: 100px; }
.api-doc-section > :last-child { margin-bottom: 0; }
.api-doc-section h3 { margin-top: var(--space-6); font-size: 1.08rem; }
.api-endpoint { display: flex; min-width: 0; align-items: center; gap: var(--space-3); margin: 0 0 var(--space-4); padding: .75rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: color-mix(in srgb, var(--color-accent) 3%, var(--color-surface)); }
.api-method { flex: none; padding: .28rem .55rem; border-radius: .4rem; color: #fff; font-size: .75rem; font-weight: 850; letter-spacing: .04em; }
.api-method.get { background: #176b70; }.api-method.post { background: #660099; }.api-method.patch { background: #8a5700; }.api-method.delete { background: #a40016; }
.api-path { min-width: 0; overflow-wrap: anywhere; font-weight: 750; }
.code-example { min-width: 0; margin: var(--space-5) 0; overflow: hidden; border: 1px solid #403548; border-radius: var(--radius-md); background: #17121b; color: #f8f3fb; box-shadow: var(--shadow-sm); }
.code-example-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: .55rem .7rem .55rem 1rem; border-bottom: 1px solid #403548; background: #241b2a; color: #d8cddd; font-size: .82rem; font-weight: 750; }
.code-example-header .button { min-height: 34px; border-color: #5a4a64; background: #302638; color: #fff; }
.code-example pre { max-width: 100%; margin: 0; padding: 1rem; overflow-x: auto; color: inherit; font: .88rem/1.55 ui-monospace, SFMono-Regular, Consolas, monospace; tab-size: 2; }
.code-example code { color: inherit; white-space: pre; }
.table-scroll { max-width: 100%; margin: var(--space-4) 0; overflow-x: auto; }
.table-scroll table { width: 100%; min-width: 570px; border-collapse: collapse; }
.table-scroll th, .table-scroll td { padding: .7rem .75rem; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
.table-scroll th { background: color-mix(in srgb, var(--color-accent) 6%, var(--color-surface)); font-size: .82rem; }
.practice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
.back-to-top { display: inline-block; margin-top: var(--space-4); font-size: .9rem; }
@media (max-width: 800px) { .api-docs-layout { grid-template-columns: 1fr; }.api-docs-nav { position: static; max-height: none; }.api-docs-content { max-width: none; } }
@media (max-width: 520px) { .practice-grid { grid-template-columns: 1fr; }.api-endpoint { align-items: flex-start; flex-direction: column; }.error-shell { padding: .75rem; } }