/*
 * Heimdall-family styles for Agent, without a build step.
 * Tokens follow Heimdall's globals.css; the accent is violet (#9333ea,
 * derived with heimdall-style's accent.py). Pages use only these variables,
 * never raw colours, so light and dark stay in step.
 */

:root {
    color-scheme: light;
    --page: #f2f3f5;
    --surface: #ffffff;
    --subtle: #f7f8f9;
    --hover: #f5f2fa;
    --line: #d9dce1;
    --line-subtle: #e9ebee;
    --fg: #1d1f23;
    --muted: #5b616b;
    --faint: #8a9099;
    --primary: #7c01cf;
    --primary-hover: #6000a2;
    --primary-soft: #f1ecf9;
    --on-primary: #ffffff;
    --link: #7c01cf;
    --success: #1b7f42;
    --success-soft: #e5f5eb;
    --warning: #8f5300;
    --warning-soft: #fff3dc;
    --danger: #c4243c;
    --danger-hover: #a01b30;
    --on-danger: #ffffff;
    --danger-soft: #fdebee;
    --info: #1f5fbf;
    --info-soft: #e8f0fc;
    --ring: rgb(124 1 207 / 0.35);
    --shadow: 0 1px 2px rgb(16 24 40 / 0.06), 0 1px 3px rgb(16 24 40 / 0.04);
    --shadow-lg: 0 10px 30px rgb(16 24 40 / 0.12);
    --overlay: rgb(17 20 24 / 0.45);
    --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --page: #141518;
    --surface: #1c1e22;
    --subtle: #22252a;
    --hover: #2d2934;
    --line: #353941;
    --line-subtle: #2a2d33;
    --fg: #eef0f3;
    --muted: #a9afb8;
    --faint: #7c838d;
    --primary: #9536ed;
    --primary-hover: #a658fa;
    --primary-soft: #2f2340;
    --on-primary: #ffffff;
    --link: #bb96ef;
    --success: #4cc27a;
    --success-soft: #16301f;
    --warning: #f0b252;
    --warning-soft: #33280f;
    --danger: #f2687c;
    --danger-hover: #ff8596;
    --on-danger: #1a0b0e;
    --danger-soft: #3a1a20;
    --info: #7fadff;
    --info-soft: #1b2a45;
    --ring: rgb(187 150 239 / 0.4);
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 30px rgb(0 0 0 / 0.5);
    --overlay: rgb(0 0 0 / 0.6);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --page: #141518;
        --surface: #1c1e22;
        --subtle: #22252a;
        --hover: #2d2934;
        --line: #353941;
        --line-subtle: #2a2d33;
        --fg: #eef0f3;
        --muted: #a9afb8;
        --faint: #7c838d;
        --primary: #9536ed;
        --primary-hover: #a658fa;
        --primary-soft: #2f2340;
        --on-primary: #ffffff;
        --link: #bb96ef;
        --success: #4cc27a;
        --success-soft: #16301f;
        --warning: #f0b252;
        --warning-soft: #33280f;
        --danger: #f2687c;
        --danger-hover: #ff8596;
        --on-danger: #1a0b0e;
        --danger-soft: #3a1a20;
        --info: #7fadff;
        --info-soft: #1b2a45;
        --ring: rgb(187 150 239 / 0.4);
        --shadow: 0 1px 2px rgb(0 0 0 / 0.4);
        --shadow-lg: 0 10px 30px rgb(0 0 0 / 0.5);
        --overlay: rgb(0 0 0 / 0.6);
    }
}

/* Base */

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 14px; background: var(--page); -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    min-height: 100dvh;
    background: var(--page);
    color: var(--fg);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, p { margin: 0; }
code, .mono { font-family: var(--font-mono); }
code { background: var(--subtle); border-radius: 4px; padding: 0.1em 0.3em; font-size: 0.9em; }
:focus-visible { outline: 2px solid transparent; box-shadow: 0 0 0 3px var(--ring); border-radius: 4px; }
::selection { background: var(--primary-soft); }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.icon { width: 16px; height: 16px; flex: none; }
.logo { flex: none; display: block; }
.stack > * + * { margin-top: 1rem; }

/* Buttons */

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    height: 2rem; padding: 0 0.75rem; border-radius: 6px;
    border: 1px solid var(--line); background: var(--surface); color: var(--fg);
    font: 500 0.875rem/1 var(--font-sans); white-space: nowrap; cursor: pointer;
    text-decoration: none; transition: background-color 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--subtle); text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn-sm { height: 1.75rem; padding: 0 0.625rem; font-size: 13px; }
.btn-sm .icon { width: 14px; height: 14px; }
.btn-lg { height: 2.5rem; width: 100%; font-size: 15px; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--on-primary); box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--subtle); color: var(--fg); }
.btn.busy .icon { animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Frame: mark and name above one centred column */

.frame main { display: flex; flex-direction: column; align-items: stretch; margin: 0 auto; padding: 2.5rem 1rem 2rem; max-width: 26rem; }
.frame main.wide { max-width: 42rem; }
.frame main > * + * { margin-top: 1.25rem; }
.brand { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--fg); font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 0.25rem; }
.brand:hover { text-decoration: none; }
.foot { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: space-between; }
.signout { display: flex; align-items: center; gap: 8px; }
.who { font-size: 13px; font-weight: 500; color: var(--muted); }

/* Cards */

.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); padding: 1.5rem; }
.card > * + * { margin-top: 1rem; }
.card h1 { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
.card.flush { padding: 0; }
.card.flush > * + * { margin-top: 0; }
.card-head { padding: 1rem 1.25rem; border-bottom: 1px solid var(--line-subtle); }
.card-head h1 { font-size: 15px; }
.signin-card > * + * { margin-top: 1.25rem; }
.page-head > * + * { margin-top: 4px; }
.meta { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.meta .icon { width: 14px; height: 14px; }
.empty { padding: 2.5rem 1.25rem; text-align: center; color: var(--muted); }
.list { list-style: none; margin: 0; padding: 0; }
.list li + li { border-top: 1px solid var(--line-subtle); }
.list a { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; padding: 0.75rem 1.25rem; color: var(--fg); }
.list a:hover { background: var(--hover); text-decoration: none; }
.list a .icon { color: var(--muted); }
.list-title { font-weight: 500; flex: 1 1 10rem; min-width: 0; overflow-wrap: anywhere; }
.list-meta { font-size: 13px; color: var(--muted); }
.actions { display: flex; justify-content: flex-end; gap: 0.5rem; }

/* Badges and callouts */

.badge { display: inline-flex; align-items: center; border-radius: 4px; padding: 2px 6px; font-size: 0.75rem; font-weight: 500; white-space: nowrap; border: 1px solid var(--line); background: var(--subtle); color: var(--muted); }
.badge-success { border-color: transparent; background: var(--success-soft); color: var(--success); }
.callout { display: flex; gap: 0.75rem; border-radius: 6px; padding: 0.75rem 0.875rem; font-size: 13px; }
.callout .icon { margin-top: 1px; }
.callout-title { font-weight: 600; }
.callout-success { background: var(--success-soft); } .callout-success .icon { color: var(--success); }
.callout-warning { background: var(--warning-soft); } .callout-warning .icon { color: var(--warning); }
.callout-danger { background: var(--danger-soft); } .callout-danger .icon { color: var(--danger); }
.callout-info { background: var(--info-soft); } .callout-info .icon { color: var(--info); }

/* Forms */

fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.field { display: flex; flex-direction: column; gap: 0.375rem; }
.label { font-size: 13px; font-weight: 500; padding: 0; }
.optional { font-weight: 400; color: var(--muted); }
.hint { font-size: 0.75rem; color: var(--muted); }
.input {
    width: 100%; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--fg);
    font: 0.875rem/1.5 var(--font-sans); padding: 0 0.625rem;
}
input.input { height: 2.25rem; }
textarea.input { padding: 0.375rem 0.625rem; resize: vertical; }
.input.mono { font-family: var(--font-mono); font-size: 13px; }
.input:focus { border-color: var(--primary); outline: none; }
.choices { display: grid; gap: 6px; }
.choice { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 6px; padding: 0.5rem 0.75rem; cursor: pointer; }
.choice:hover { background: var(--hover); }
.choice:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); }
.choice input { accent-color: var(--primary); margin: 0; }

/* Theme switch */

.theme-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; padding: 2px; background: var(--surface); }
.theme-switch button {
    display: inline-flex; align-items: center; border: 0; background: transparent; color: var(--muted);
    border-radius: 4px; padding: 4px 8px; cursor: pointer;
}
.theme-switch button:hover { color: var(--fg); }
.theme-switch button[aria-pressed="true"] { background: var(--primary-soft); color: var(--link); }
.theme-switch .icon { width: 14px; height: 14px; }

/* Page text */

.prose { font-size: 15px; line-height: 1.6; overflow-wrap: break-word; }
.prose > * + * { margin-top: 0.85em; }
.prose > :first-child { margin-top: 0; }
.prose h1, .prose h2, .prose h3 { line-height: 1.3; font-weight: 600; margin-top: 1.5em; }
.prose h1 { font-size: 20px; } .prose h2 { font-size: 17px; } .prose h3 { font-size: 15px; }
.prose a { text-decoration: underline; text-underline-offset: 2px; }
.prose ul, .prose ol { padding-left: 1.5em; margin-bottom: 0; }
.prose li + li { margin-top: 0.25em; }
.prose blockquote { margin-left: 0; padding-left: 1em; border-left: 3px solid var(--line); color: var(--muted); }
.prose pre { background: var(--subtle); border: 1px solid var(--line-subtle); border-radius: 6px; padding: 0.75rem 0.875rem; overflow-x: auto; font-size: 13px; line-height: 1.55; }
.prose pre code { background: none; padding: 0; font-size: inherit; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 1.5em 0; }
.prose table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line-subtle); padding: 6px 10px; text-align: left; }
.prose th { background: var(--subtle); font-weight: 600; }