:root{--bg:#f5f6f8;--fg:#1c1f24;--muted:#5d6672;--card:#fff;--line:#d5d9df;--accent:#1d5fd1;--accent-fg:#fff;--danger:#b3261e;--ok:#1b6e3c;--okbg:#e4f4ea;--errbg:#fdeceb;--bar-bg:#fff;--bar-fg:#1c1f24;--bar-line:#d5d9df}
@media (prefers-color-scheme:dark){:root{--bg:#14161a;--fg:#e6e8eb;--muted:#9aa3ad;--card:#1d2026;--line:#323843;--accent:#6ea0ff;--accent-fg:#0b1220;--danger:#ff8a80;--ok:#7ddf9f;--okbg:#14301f;--errbg:#3a1a18;--bar-bg:#1d2026;--bar-fg:#e6e8eb;--bar-line:#323843}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;padding:.75rem 1rem;background:var(--bar-bg);color:var(--bar-fg);border-bottom:1px solid var(--bar-line)}
.brand{display:inline-flex;align-items:center;font-weight:700;color:var(--bar-fg);text-decoration:none;margin-right:auto}
.brand-logo{display:block;height:2.25rem;width:auto;max-width:60vw}
.bar nav{display:flex;gap:1rem;flex-wrap:wrap}
.bar nav a,.bar button.link{color:var(--bar-fg)}
a{color:var(--accent)}
main{max-width:44rem;margin:0 auto;padding:1rem}
main.wide{max-width:80rem}
/* Dashboard blocks: as many columns as fit (one on a phone, more as the window widens). */
.blocks{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,19rem),1fr));gap:1rem;align-items:stretch}
.blocks>.card{margin:0;display:flex;flex-direction:column}
.blocks>.card>:last-child{margin-bottom:0}
.blocks>.card>.button,.blocks>.card>form>button:last-child{margin-top:auto}
.blocks>.card>.button{align-self:flex-start}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1rem 1.25rem;margin:0 0 1rem}
.narrow{max-width:26rem;margin-left:auto;margin-right:auto}
h1{font-size:1.4rem;margin:.2rem 0 .8rem}h2{font-size:1.15rem;margin:.2rem 0 .6rem}
.muted{color:var(--muted);font-size:.92rem}
label{display:block;margin:.8rem 0 .25rem;font-weight:600}
input[type=text],input[type=email],input[type=password],select{width:100%;padding:.65rem .75rem;font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px}
input:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:1px}
button,.button{display:inline-block;font:inherit;padding:.6rem 1rem;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer;text-decoration:none;min-height:44px}
button.primary,.button{background:var(--accent);color:var(--accent-fg);border-color:var(--accent)}
form>button.primary{margin-top:1rem}
button.danger{color:var(--danger);border-color:var(--danger)}
button.link{background:none;border:0;color:var(--accent);padding:.4rem;text-decoration:underline}
.inline{display:inline}
.msg{padding:.7rem 1rem;border-radius:8px;margin:0 0 1rem}
.msg.error{background:var(--errbg);color:var(--danger)}.msg.ok{background:var(--okbg);color:var(--ok)}
.grid{display:grid;grid-template-columns:1fr;gap:0 1rem}
@media (min-width:34rem){.grid{grid-template-columns:1fr 1fr}}
.rules{list-style:none;padding:0;margin:0}
.rules li{display:flex;flex-direction:column;gap:.5rem;padding:.75rem 0;border-top:1px solid var(--line)}
.rule{display:flex;flex-direction:column;gap:.15rem;overflow-wrap:anywhere}
.actions{display:flex;gap:.5rem;flex-wrap:wrap}
@media (min-width:34rem){.rules li{flex-direction:row;align-items:center;justify-content:space-between}}
code{background:var(--bg);padding:.05rem .35rem;border-radius:4px;overflow-wrap:anywhere}
textarea{width:100%;padding:.65rem .75rem;font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;resize:vertical;min-height:8rem}
textarea:focus,input[type=date]:focus{outline:3px solid var(--accent);outline-offset:1px}
input[type=date]{width:100%;padding:.65rem .75rem;font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:8px;min-height:44px}
label.check{display:flex;gap:.6rem;align-items:center;font-weight:600}
label.check input{width:1.4rem;height:1.4rem}
fieldset{border:1px solid var(--line);border-radius:8px;margin:.8rem 0 0;padding:.6rem .9rem}
fieldset legend{padding:0 .4rem;font-weight:600;font-size:.92rem}
fieldset label.check{margin:.4rem 0}
.alias-domain{display:flex;align-items:center;margin-top:.8rem}
@media (max-width:33.9rem){.alias-domain{margin-top:.3rem}}
.state.on{color:var(--ok)}
.tabs{display:flex;gap:1rem;border-bottom:1px solid var(--line);margin:1rem 0 0}
.tabs a{padding:.5rem .1rem;text-decoration:none;color:var(--muted);border-bottom:2px solid transparent}
.tabs a[aria-current=page]{color:var(--fg);font-weight:600;border-color:var(--accent)}
.preview{margin-top:1rem;border-top:1px solid var(--line);padding-top:1rem}
.preview-body{border:1px dashed var(--line);border-radius:8px;padding:.75rem 1rem;overflow-wrap:anywhere}
.preview-body p:first-child{margin-top:0}.preview-body p:last-child{margin-bottom:0}