*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    color: #1d1d1f;
    background: #fafafa;
}

h1, h2, h3, h4 { letter-spacing: -0.02em; }
h1 { border-bottom: 3px solid #ffe01b; padding-bottom: 0.5rem; margin-top: 0; }
h2 { margin-top: 2rem; }
h4 { margin-bottom: 0.35rem; font-size: 0.85rem; text-transform: uppercase;
     letter-spacing: 0.05em; color: #555; }

p { margin: 0.75rem 0; }
a { color: #245bcf; }

code {
    background: #f0f0f0;
    padding: 0.15em 0.4em;
    border-radius: 3px;
    font-size: 0.9em;
    font-family: "SF Mono", Monaco, Consolas, monospace;
}

pre {
    background: #1d1d1f;
    color: #e8e8e8;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.5;
    font-family: "SF Mono", Monaco, Consolas, monospace;
}
pre code { background: none; padding: 0; color: inherit; font-size: inherit; }

.nav {
    background: white;
    border: 1px solid #e3e3e3;
    border-radius: 6px;
    padding: 0.6rem 1rem;
    margin-bottom: 2rem;
    font-size: 0.88rem;
}
.nav a { margin-right: 0.9rem; color: #245bcf; text-decoration: none; }
.nav a:hover { text-decoration: underline; }
.nav a.current { font-weight: 700; color: #1d1d1f; }
.nav .sep { color: #ccc; margin-right: 0.6rem; }

.debug {
    border: 1px solid #e3e3e3;
    border-radius: 6px;
    padding: 1rem 1.25rem;
    background: white;
    margin: 1.5rem 0;
}
.debug h3 { margin-top: 0; }

form { margin: 1.5rem 0; }
label { display: block; margin: 0.9rem 0 0.25rem; font-weight: 600; font-size: 0.9rem; }
label small { font-weight: 400; color: #666; margin-left: 0.4em; }

input[type=text], input[type=email], textarea, select {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid #c8c8c8;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    background: white;
}
input:focus, textarea:focus, select:focus {
    outline: 2px solid #ffe01b;
    outline-offset: -1px;
    border-color: #1d1d1f;
}
textarea { min-height: 6em; font-family: "SF Mono", Monaco, Consolas, monospace;
           font-size: 0.9rem; }

button, input[type=submit] {
    background: #ffe01b;
    border: 2px solid #1d1d1f;
    color: #1d1d1f;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 1rem;
    font-family: inherit;
}
button:hover, input[type=submit]:hover { background: #ffcd00; }
button.danger { background: #fde0e0; border-color: #9b1c1c; color: #9b1c1c; }
button.danger:hover { background: #fbc4c4; }

.callout {
    border-left: 4px solid #ffe01b;
    padding: 0.75rem 1rem;
    background: white;
    margin: 1.5rem 0;
    border-radius: 0 4px 4px 0;
    border-top: 1px solid #e3e3e3;
    border-right: 1px solid #e3e3e3;
    border-bottom: 1px solid #e3e3e3;
}
.callout.warn { border-left-color: #d73a49; }
.callout.ok   { border-left-color: #28a745; }
.callout.info { border-left-color: #245bcf; }

table { width: 100%; border-collapse: collapse; margin: 1rem 0; background: white;
        border: 1px solid #e3e3e3; border-radius: 6px; overflow: hidden; }
th, td { padding: 0.55rem 0.8rem; text-align: left; border-bottom: 1px solid #eee; font-size: 0.9rem; }
th { background: #f5f5f5; font-size: 0.75rem; text-transform: uppercase;
     letter-spacing: 0.04em; color: #555; }
tr:last-child td { border-bottom: none; }

.tag {
    display: inline-block;
    padding: 0.15em 0.6em;
    border-radius: 10px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-left: 0.5em;
    letter-spacing: 0.03em;
}
.tag-ok  { background: #d4f4dd; color: #1d6b3b; }
.tag-err { background: #fde0e0; color: #9b1c1c; }

.step-card {
    display: block;
    background: white;
    border: 1px solid #e3e3e3;
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin: 0.6rem 0;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s;
}
.step-card:hover { border-color: #1d1d1f; }
.step-card .num {
    display: inline-block;
    width: 1.7rem;
    height: 1.7rem;
    line-height: 1.7rem;
    background: #1d1d1f;
    color: #ffe01b;
    text-align: center;
    border-radius: 50%;
    font-weight: 700;
    margin-right: 0.6em;
    font-size: 0.85rem;
}
.step-card h3 { display: inline; margin: 0; font-size: 1.05rem; }
.step-card p  { margin: 0.4rem 0 0 0; color: #555; font-size: 0.9rem; }

.muted  { color: #777; font-size: 0.85rem; }
.endpoint { font-family: "SF Mono", Monaco, Consolas, monospace; font-size: 0.9rem;
            background: #f0f0f0; padding: 0.15em 0.5em; border-radius: 3px; }

footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid #e3e3e3; }

ol.big-steps { padding-left: 1.5rem; }
ol.big-steps li { padding: 0.4rem 0; }
ol.big-steps li strong { display: block; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 640px) { .two-col { grid-template-columns: 1fr; } }