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

body {
    font-family: system-ui, -apple-system, sans-serif;
    margin: 0;
    background: #f4f5f7;
    color: #222;
    line-height: 1.5;
}

/* ── Header ── */
header {
    background: #1a1a2e;
    color: #fff;
    padding: 1.25rem 2rem;
}
header h1 { margin: 0; font-size: 1.4rem; letter-spacing: -0.02em; }
header p  { margin: 0.2rem 0 0; font-size: 0.85rem; opacity: 0.6; }

/* ── Page container ── */
main { max-width: 860px; margin: 2rem auto; padding: 0 1.25rem 4rem; }

/* ── Form card ── */
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group { margin-bottom: 1rem; }
label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: #333;
}
.hint { font-weight: 400; color: #888; font-size: 0.8rem; margin-left: 0.25rem; }
.required { color: #c0392b; }

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d0d0d0;
    border-radius: 5px;
    font-size: 1rem;
    color: #222;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
}
input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: #4c6ef5;
    box-shadow: 0 0 0 3px rgba(76,110,245,.15);
}

/* Advanced toggle */
details { margin: 1rem 0 0.5rem; }
summary {
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: #555;
    user-select: none;
    list-style: none;
}
summary::before { content: "▸ "; font-size: 0.75em; }
details[open] summary::before { content: "▾ "; }
.advanced { padding-top: 1rem; }

/* Submit */
.btn-generate {
    margin-top: 0.75rem;
    padding: 0.6rem 1.75rem;
    background: #1a1a2e;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.15s;
}
.btn-generate:hover   { background: #2d2d50; }
.btn-generate:disabled { opacity: 0.55; cursor: not-allowed; }

/* Generating notice */
#generating-msg {
    display: none;
    margin: 1rem 0 0;
    color: #555;
    font-size: 0.9rem;
    font-style: italic;
}

/* ── Banners ── */
.banner {
    padding: 0.8rem 1.1rem;
    border-radius: 6px;
    font-weight: 600;
    margin-bottom: 1rem;
}
.banner-success     { background: #d4edda; color: #155724; border: 1px solid #b8dacc; }
.banner-needs-review { background: #fff3cd; color: #7d5a00; border: 1px solid #f0d060; }
.banner-halted      { background: #f8d7da; color: #721c24; border: 1px solid #f0b8bb; }
.banner-error       { background: #f8d7da; color: #721c24; border: 1px solid #f0b8bb; }
.banner-hint        { display: block; font-weight: 400; font-size: 0.88rem; margin-top: 0.3rem; opacity: 0.85; }

/* ── Stats row ── */
.stats {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: #555;
    margin-bottom: 1rem;
}
.stats strong { color: #222; }

/* ── File path ── */
.file-path {
    font-size: 0.875rem;
    color: #555;
    margin-bottom: 1rem;
}
.file-path code {
    background: #f0f0f0;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.85em;
    word-break: break-all;
}

/* ── Gate feedback ── */
.gate-feedback {
    background: #fffbeb;
    border: 1px solid #f0d060;
    border-radius: 6px;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}
.gate-feedback h3 {
    margin: 0 0 0.6rem;
    font-size: 0.95rem;
    color: #7d5a00;
}
.gate-feedback ul,
.gate-feedback ol { margin: 0.25rem 0 0 1.2rem; padding: 0; }
.gate-feedback li  { margin-bottom: 0.2rem; font-size: 0.875rem; }

/* ── Draft preview ── */
.draft-preview {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.draft-preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}
.draft-preview-header h3 {
    margin: 0;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: #888;
}
.btn-download {
    padding: 0.35rem 0.9rem;
    background: #fff;
    color: #1a1a2e;
    border: 1.5px solid #1a1a2e;
    border-radius: 5px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}
.btn-download:hover { background: #1a1a2e; color: #fff; }

/* Markdown content */
.draft-body { line-height: 1.75; }
.draft-body h1 { font-size: 1.6rem; margin: 0 0 0.75rem; }
.draft-body h2 { font-size: 1.25rem; margin: 1.5rem 0 0.5rem; }
.draft-body h3 { font-size: 1.05rem; margin: 1.25rem 0 0.4rem; }
.draft-body p  { margin: 0 0 0.85rem; }
.draft-body ul,
.draft-body ol { margin: 0 0 0.85rem 1.4rem; padding: 0; }
.draft-body li { margin-bottom: 0.25rem; }
.draft-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 1rem 0;
    font-size: 0.9rem;
}
.draft-body th,
.draft-body td {
    border: 1px solid #d8d8d8;
    padding: 0.45rem 0.75rem;
    text-align: left;
}
.draft-body th { background: #f5f5f5; font-weight: 600; }
.draft-body code {
    background: #f2f2f2;
    padding: 0.15rem 0.3rem;
    border-radius: 3px;
    font-size: 0.87em;
}
.draft-body pre {
    background: #f2f2f2;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}
.draft-body pre code { background: none; padding: 0; }
.draft-body blockquote {
    border-left: 3px solid #d0d0d0;
    margin: 0 0 0.85rem;
    padding: 0.25rem 0 0.25rem 1rem;
    color: #555;
}

/* ── Tabs ── */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: -1px;
}
.tab {
    padding: 0.5rem 1.25rem;
    background: #e8e8ec;
    border: 1px solid #d0d0d0;
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: #555;
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}
.tab.active {
    background: #fff;
    color: #1a1a2e;
    border-color: #d0d0d0;
}
.tab-panel { display: none; border-radius: 0 8px 8px 8px; }
.tab-panel.active { display: block; }

/* ── Seed textarea ── */
textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d0d0d0;
    border-radius: 5px;
    font-size: 0.88rem;
    font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
    color: #222;
    background: #fff;
    resize: vertical;
    transition: border-color 0.15s, box-shadow 0.15s;
    line-height: 1.55;
}
textarea:focus {
    outline: none;
    border-color: #4c6ef5;
    box-shadow: 0 0 0 3px rgba(76,110,245,.15);
}

/* ── Missing fields form ── */
.missing-fields-heading {
    margin: 0 0 1.25rem;
    font-size: 1rem;
    color: #1a1a2e;
}
.seed-field-critical { border-left: 3px solid #c0392b; padding-left: 0.75rem; }
.badge-critical {
    display: inline-block;
    background: #fdecea;
    color: #c0392b;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    margin-left: 0.4rem;
    vertical-align: middle;
}
.field-type-hint { font-size: 0.75rem; color: #aaa; margin-left: 0.5rem; }

.seed-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d0d0d0;
    border-radius: 5px;
    font-size: 1rem;
    background: #fff;
    color: #222;
}
.radio-group { display: flex; gap: 1.5rem; margin-top: 0.25rem; }
.radio-label { font-weight: 400; font-size: 0.95rem; cursor: pointer; }
.radio-label input { margin-right: 0.3rem; }

.seed-ready-card { background: #f0faf4; border: 1px solid #b8dacc; }
.generating-notice {
    margin: 0.75rem 0 0;
    color: #555;
    font-size: 0.9rem;
    font-style: italic;
    display: none;
}