/* ============================================================
   営業メール件名比較メモ（Claude Code版）
   Color: Navy #1e3a5f accent / #f9fafb background
   ============================================================ */

.slc-frame {
    --slc-accent: #1e3a5f;
    --slc-accent-hover: #162d4a;
    --slc-accent-light: #e0e8f0;
    --slc-accent-muted: #7da0c4;
    --slc-text: #111827;
    --slc-text-muted: #6b7280;
    --slc-bg: #f9fafb;
    --slc-card-bg: #ffffff;
    --slc-border: #e5e7eb;
    --slc-radius: 10px;
    --slc-shell-width: 1140px;

    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    color: var(--slc-text);
    background: var(--slc-bg);
    line-height: 1.7;
}

.artifact-body--sales-subject-line-comparer-claude-code {
    --artifact-header-accent: #1e3a5f;
    --artifact-header-muted: #6b7280;
    --artifact-header-border: #d1d5db;
    --artifact-header-surface: #f9fafb;
}

.slc-shell {
    max-width: var(--slc-shell-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Buttons --- */
.slc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: var(--slc-radius);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
    border: 2px solid transparent;
    line-height: 1.4;
}

.slc-btn--primary {
    background: var(--slc-accent);
    color: #fff;
    border-color: var(--slc-accent);
}

.slc-btn--primary:hover {
    background: var(--slc-accent-hover);
    border-color: var(--slc-accent-hover);
}

.slc-btn--outline {
    background: transparent;
    color: var(--slc-accent);
    border-color: var(--slc-accent);
}

.slc-btn--outline:hover {
    background: var(--slc-accent-light);
}

.slc-btn--sm { padding: 6px 16px; font-size: 0.85rem; }
.slc-btn--lg { padding: 14px 32px; font-size: 1.05rem; }

/* --- Labels --- */
.slc-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--slc-accent);
    letter-spacing: 0.04em;
}

.slc-label--light { color: var(--slc-accent-muted); }

/* --- Hero --- */
.slc-hero {
    padding: 56px 0 48px;
    text-align: center;
    background: linear-gradient(180deg, #edf2f7 0%, var(--slc-bg) 100%);
}

.slc-hero__badge {
    display: inline-block;
    padding: 6px 18px;
    margin-bottom: 20px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--slc-accent);
    background: var(--slc-accent-light);
    border-radius: 999px;
}

.slc-hero__title {
    font-size: clamp(1.6rem, 4vw, 2.3rem);
    font-weight: 800;
    line-height: 1.35;
    margin: 0 0 16px;
}

.slc-hero__lead {
    font-size: 1rem;
    color: var(--slc-text-muted);
    max-width: 640px;
    margin: 0 auto 28px;
    line-height: 1.75;
}

.slc-hero__actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.slc-hero__points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    max-width: 840px;
    margin: 0 auto;
    text-align: left;
}

.slc-hero__point {
    background: var(--slc-card-bg);
    border: 1px solid var(--slc-border);
    border-radius: var(--slc-radius);
    padding: 16px 20px;
}

.slc-hero__point strong { display: block; font-size: 0.92rem; margin-bottom: 4px; }
.slc-hero__point span { font-size: 0.82rem; color: var(--slc-text-muted); }

/* --- Section --- */
.slc-section { padding: 56px 0; }
.slc-section--warm { background: #edf2f7; }
.slc-section--dark { background: #111827; color: #e5e7eb; }
.slc-section--cta { background: linear-gradient(180deg, var(--slc-bg) 0%, #edf2f7 100%); }

.slc-section-header { text-align: center; margin-bottom: 40px; }
.slc-section-header h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 800; margin: 8px 0 12px; line-height: 1.4; }
.slc-section-header p { font-size: 0.95rem; color: var(--slc-text-muted); max-width: 640px; margin: 0 auto; }
.slc-section-header--light h2 { color: #fff; }
.slc-section-header--light p { color: #9ca3af; }

/* --- Tool Layout --- */
.slc-tool-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 28px;
    align-items: start;
}

.slc-tool-layout__result { position: sticky; top: 80px; }

/* --- Fieldset --- */
.slc-fieldset {
    border: 1px solid var(--slc-border);
    border-radius: var(--slc-radius);
    background: var(--slc-card-bg);
    padding: 20px;
    margin: 0 0 16px;
}

.slc-fieldset__legend {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--slc-accent);
    padding: 0 6px;
}

.slc-fieldset__icon { font-size: 1rem; }

/* --- Subject Input Rows --- */
.slc-subject-inputs { display: flex; flex-direction: column; gap: 12px; }

.slc-subject-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.slc-subject-row__num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--slc-accent);
    color: #fff;
    font-weight: 700;
    font-size: 0.8rem;
    border-radius: 50%;
    margin-top: 6px;
}

.slc-subject-row__fields {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.slc-subject-row__fields input {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--slc-border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--slc-text);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.slc-subject-row__fields input:focus {
    outline: none;
    border-color: var(--slc-accent);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.slc-subject-row__memo {
    font-size: 0.82rem !important;
    padding: 6px 12px !important;
    color: var(--slc-text-muted) !important;
    background: #f9fafb !important;
}

/* --- Fields --- */
.slc-field { display: block; margin-bottom: 14px; }
.slc-field:last-child { margin-bottom: 0; }
.slc-field__label { display: block; font-size: 0.82rem; font-weight: 600; margin-bottom: 5px; }

.slc-field input,
.slc-field select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--slc-border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--slc-text);
    background: #fff;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.slc-field input:focus,
.slc-field select:focus {
    outline: none;
    border-color: var(--slc-accent);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

/* --- Result Panel --- */
.slc-result-panel {
    border: 2px solid var(--slc-accent);
    border-radius: var(--slc-radius);
    background: var(--slc-card-bg);
    overflow: hidden;
}

.slc-result-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--slc-border);
    background: #f9fafb;
}

.slc-result-panel__header h3 { font-size: 0.92rem; font-weight: 700; margin: 4px 0 0; }

.slc-result-panel__body { padding: 0; }

.slc-result-panel__table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.slc-result-panel__empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--slc-text-muted);
}

.slc-result-panel__summary {
    padding: 16px 18px;
    border-top: 1px solid var(--slc-border);
    background: #f9fafb;
}

.slc-result-panel__summary h4 { font-size: 0.88rem; font-weight: 700; margin: 0 0 8px; }

.slc-result-panel__summary ul {
    margin: 0;
    padding: 0 0 0 20px;
    font-size: 0.85rem;
    color: var(--slc-text-muted);
    line-height: 1.7;
}

.slc-result-panel__footer {
    padding: 10px 18px;
    border-top: 1px solid var(--slc-border);
    background: #f9fafb;
}

.slc-result-panel__footer p { font-size: 0.75rem; color: var(--slc-text-muted); margin: 0; }

/* --- Evaluation Table --- */
.slc-eval-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    min-width: 640px;
}

.slc-eval-table th,
.slc-eval-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--slc-border);
    text-align: left;
    vertical-align: top;
}

.slc-eval-table thead th {
    background: #f3f4f6;
    font-weight: 700;
    font-size: 0.78rem;
    color: var(--slc-text-muted);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

.slc-eval-table__th--num { width: 32px; text-align: center; }
.slc-eval-table__th--subject { min-width: 180px; }

.slc-eval-table__td--num { text-align: center; font-weight: 700; color: var(--slc-accent); }

.slc-eval-table__td--subject { max-width: 220px; }

.slc-eval-table__subject-text {
    display: block;
    font-weight: 600;
    color: var(--slc-text);
    word-break: break-all;
    line-height: 1.5;
}

.slc-eval-table__memo {
    display: block;
    font-size: 0.75rem;
    color: var(--slc-text-muted);
    margin-top: 2px;
    font-style: italic;
}

.slc-eval-table__td--metric {
    white-space: nowrap;
    font-size: 0.8rem;
}

/* --- Badge --- */
.slc-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.slc-badge--good { background: #dcfce7; color: #166534; }
.slc-badge--ok { background: #fef3c7; color: #92400e; }
.slc-badge--warn { background: #fee2e2; color: #991b1b; }

/* --- Tip Cards --- */
.slc-tip-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
}

.slc-tip-card {
    display: flex;
    gap: 14px;
    background: var(--slc-card-bg);
    border: 1px solid var(--slc-border);
    border-radius: var(--slc-radius);
    padding: 18px;
}

.slc-tip-card__icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--slc-accent-light);
    border-radius: 8px;
}

.slc-tip-card__body h3 { font-size: 0.92rem; font-weight: 700; margin: 0 0 5px; }
.slc-tip-card__body p { font-size: 0.84rem; color: var(--slc-text-muted); margin: 0; line-height: 1.7; }

/* --- Steps --- */
.slc-steps { max-width: 680px; margin: 0 auto; display: flex; flex-direction: column; gap: 24px; }

.slc-step { display: flex; gap: 18px; align-items: flex-start; }

.slc-step__number {
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--slc-accent);
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
    border-radius: 50%;
}

.slc-step__body h3 { font-size: 1rem; font-weight: 700; margin: 0 0 5px; }
.slc-step__body p { font-size: 0.9rem; color: var(--slc-text-muted); margin: 0; line-height: 1.7; }

/* --- FAQ --- */
.slc-faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.slc-faq { background: #1f2937; border-radius: var(--slc-radius); overflow: hidden; }

.slc-faq summary {
    padding: 14px 18px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.slc-faq summary::-webkit-details-marker { display: none; }

.slc-faq summary::before {
    content: '+';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin-right: 10px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--slc-accent-muted);
    border: 1px solid #4b5563;
    border-radius: 5px;
    flex-shrink: 0;
    vertical-align: middle;
}

.slc-faq[open] summary::before { content: '−'; }
.slc-faq summary h3 { display: inline; font-size: 0.92rem; font-weight: 600; color: #f3f4f6; }
.slc-faq p { padding: 0 18px 14px 50px; font-size: 0.88rem; color: #9ca3af; margin: 0; line-height: 1.7; }

/* --- CTA --- */
.slc-cta { text-align: center; padding: 20px 0; }
.slc-cta h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 800; margin: 8px 0 14px; line-height: 1.4; }
.slc-cta p { font-size: 0.95rem; color: var(--slc-text-muted); max-width: 560px; margin: 0 auto 28px; }
.slc-cta__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* --- Footer --- */
.slc-footer { background: #111827; padding: 32px 0; color: #9ca3af; font-size: 0.85rem; }

.slc-footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.slc-footer__inner p { margin: 0; }
.slc-footer__links { display: flex; gap: 20px; }
.slc-footer__links a { color: #9ca3af; text-decoration: none; font-size: 0.85rem; }
.slc-footer__links a:hover { color: #f3f4f6; }

/* --- Print --- */
@media print {
    .slc-hero, .slc-section--warm, .slc-section--dark, .slc-section--cta,
    .slc-footer, .slc-tool-layout__form, .slc-result-panel__header,
    .slc-result-panel__footer, [data-slc-copy] { display: none !important; }
    .slc-frame { background: #fff; }
    .slc-tool-layout { display: block; }
    .slc-tool-layout__result { position: static; }
    .slc-result-panel { border: 1px solid #ccc; }
    .slc-section { padding: 0; }
}

/* --- Responsive --- */
@media (max-width: 860px) {
    .slc-tool-layout { grid-template-columns: 1fr; }
    .slc-tool-layout__result { position: static; }
}

@media (max-width: 768px) {
    .slc-hero { padding: 40px 0 36px; }
    .slc-hero__points { grid-template-columns: 1fr; }
    .slc-section { padding: 40px 0; }
    .slc-tip-list { grid-template-columns: 1fr; }
    .slc-footer__inner { flex-direction: column; text-align: center; }
    .slc-subject-row { flex-direction: column; gap: 6px; }
    .slc-subject-row__num { margin-top: 0; }
}