/* Skill detail page — /courses/skill/{slug} */

.sk-layout { max-width: 900px; margin: 0 auto; padding: 32px 24px 60px; font-family: 'Inter', system-ui, -apple-system, sans-serif; color: #111827; }

.sk-hero { text-align: center; padding: 24px 16px 28px; border-bottom: 1px solid #E5E7EB; margin-bottom: 32px; }
.sk-hero-icon { width: 64px; height: 64px; border-radius: 16px; background: linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%); color: #2563EB; display: flex; align-items: center; justify-content: center; font-size: 28px; margin: 0 auto 16px; }
.sk-title { font-size: 30px; font-weight: 800; margin: 0 0 10px; color: #111827; letter-spacing: -0.5px; line-height: 1.2; }
.sk-cat-badge { display: inline-block; font-size: 11px; font-weight: 700; color: #2563EB; background: #DBEAFE; padding: 4px 10px; border-radius: 12px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 12px; }
.sk-tagline { font-size: 15px; color: #4B5563; max-width: 640px; margin: 0 auto 20px; line-height: 1.6; }

.sk-mark { margin-top: 20px; display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.sk-mark-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; background: #fff; color: #2563EB; border: 2px solid #2563EB; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit; transition: all 0.15s; }
.sk-mark-btn:hover:not(:disabled) { background: #EFF6FF; }
.sk-mark-btn.sk-mark-done { background: #2563EB; color: #fff; }
.sk-mark-btn.sk-mark-done:hover:not(:disabled) { background: #1D4ED8; }
.sk-mark-btn:disabled { opacity: 0.6; cursor: wait; }
.sk-mark-feedback { font-size: 12px; color: #10B981; }
.sk-login-note { font-size: 13px; color: #6B7280; margin-top: 12px; }
.sk-login-note a { color: #2563EB; font-weight: 600; }

.sk-section { margin-bottom: 36px; }
.sk-section h2 { font-size: 18px; font-weight: 700; color: #111827; display: flex; align-items: center; gap: 10px; margin: 0 0 16px; padding-bottom: 8px; border-bottom: 1px solid #E5E7EB; }
.sk-section h2 i { color: #2563EB; font-size: 16px; }
.sk-section.sk-empty { background: #F9FAFB; border: 1px dashed #D1D5DB; border-radius: 8px; padding: 24px; text-align: center; color: #6B7280; font-size: 13px; }
.sk-section.sk-empty i { color: #9CA3AF; margin-right: 6px; }

.sk-detail-body { font-size: 14px; line-height: 1.75; color: #374151; }
.sk-detail-body h1, .sk-detail-body h2, .sk-detail-body h3 { color: #111827; margin: 20px 0 10px; line-height: 1.3; }
.sk-detail-body h1 { font-size: 20px; font-weight: 700; }
.sk-detail-body h2 { font-size: 17px; font-weight: 700; }
.sk-detail-body h3 { font-size: 15px; font-weight: 600; }
.sk-detail-body p { margin: 0 0 12px; }
.sk-detail-body ul, .sk-detail-body ol { margin: 0 0 12px; padding-left: 24px; }
.sk-detail-body li { margin-bottom: 4px; }
.sk-detail-body code { background: #F3F4F6; padding: 1px 6px; border-radius: 4px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; color: #DC2626; }
.sk-detail-body pre { background: #1F2937; color: #F9FAFB; padding: 14px; border-radius: 8px; overflow-x: auto; font-size: 12px; line-height: 1.5; margin: 12px 0; }
.sk-detail-body pre code { background: transparent; color: inherit; padding: 0; }
.sk-detail-body blockquote { border-left: 3px solid #2563EB; padding: 6px 16px; color: #4B5563; font-style: italic; margin: 12px 0; background: #F9FAFB; }
.sk-detail-body table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13px; }
.sk-detail-body th, .sk-detail-body td { padding: 8px 12px; border: 1px solid #E5E7EB; text-align: left; }
.sk-detail-body th { background: #F9FAFB; font-weight: 600; }
.sk-detail-body .sk-learning-figure { margin: 16px 0 18px; }
.sk-detail-body .sk-learning-figure img { display: block; width: 100%; height: auto; border: 1px solid #E5E7EB; border-radius: 12px; background: #F8FAFC; box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06); }
.sk-detail-body .sk-learning-figure figcaption { margin-top: 8px; font-size: 12px; line-height: 1.55; color: #6B7280; }
.sk-detail-body .sk-template-box { background: #F8FAFC; border: 1px solid #E5E7EB; border-radius: 10px; padding: 14px 16px; margin: 12px 0; }
.sk-detail-body .sk-case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 14px 0; }
.sk-detail-body .sk-case-grid article { border: 1px solid #E5E7EB; border-radius: 10px; background: #fff; padding: 14px; }
.sk-detail-body .sk-case-grid h4 { color: #111827; font-size: 14px; line-height: 1.35; margin: 0 0 10px; }
.sk-detail-body .sk-case-grid p { font-size: 13px; line-height: 1.6; margin-bottom: 8px; }

.sk-card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.sk-resource-card { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: #fff; border: 1px solid #E5E7EB; border-radius: 10px; text-decoration: none; color: inherit; transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s; }
.sk-resource-card:hover { border-color: #2563EB; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08); }
.sk-resource-icon { width: 36px; height: 36px; border-radius: 8px; background: #DBEAFE; color: #2563EB; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }
.sk-resource-icon-doc { background: #FEF3C7; color: #D97706; }
.sk-resource-body { flex: 1; min-width: 0; }
.sk-resource-cat { font-size: 10px; color: #9CA3AF; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; margin-bottom: 2px; }
.sk-resource-title { font-size: 13px; font-weight: 600; color: #111827; line-height: 1.3; }
.sk-resource-arrow { color: #9CA3AF; font-size: 12px; flex-shrink: 0; }

.sk-role-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.sk-role-chip { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; background: #F3F4F6; color: #374151; border-radius: 16px; font-size: 12px; font-weight: 500; text-decoration: none; transition: background 0.15s; }
.sk-role-chip:hover { background: #DBEAFE; color: #1D4ED8; }
.sk-role-chip-level { font-size: 10px; color: #6B7280; }

@media (max-width: 640px) {
    .sk-title { font-size: 24px; }
    .sk-hero-icon { width: 52px; height: 52px; font-size: 22px; }
    .sk-section h2 { font-size: 16px; }
    .sk-card-grid { grid-template-columns: 1fr; }
    .sk-detail-body .sk-case-grid { grid-template-columns: 1fr; }
}

/* ═══ Comments / discussion ═══ */
.sk-comments-section { margin-top: 40px; }
.sk-comments-count { display: inline-block; background: #DBEAFE; color: #2563EB; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 700; margin-left: 6px; }
.sk-comments-intro { font-size: 13px; color: #6B7280; margin: -8px 0 16px; line-height: 1.5; }

.sk-comment-form { background: #fff; border: 1px solid #E5E7EB; border-radius: 10px; padding: 16px; margin-bottom: 20px; }
.sk-comment-form textarea { width: 100%; min-height: 80px; padding: 10px 12px; border: 1px solid #E5E7EB; border-radius: 8px; font-size: 14px; font-family: inherit; resize: vertical; box-sizing: border-box; line-height: 1.5; }
.sk-comment-form textarea:focus { outline: none; border-color: #2563EB; box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1); }
.sk-comment-extras { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.sk-comment-extras input[type=url] { flex: 1; min-width: 200px; padding: 8px 12px; border: 1px solid #E5E7EB; border-radius: 6px; font-size: 13px; font-family: inherit; box-sizing: border-box; }
.sk-comment-extras input[type=url]:focus { outline: none; border-color: #2563EB; }
.sk-file-label { display: inline-flex; align-items: center; gap: 6px; padding: 8px 12px; background: #F3F4F6; color: #4B5563; border-radius: 6px; font-size: 12px; cursor: pointer; border: 1px solid #E5E7EB; transition: background 0.15s; }
.sk-file-label:hover { background: #E5E7EB; }
.sk-comment-row { display: flex; align-items: center; justify-content: space-between; margin-top: 10px; }
.sk-char-count { font-size: 11px; color: #9CA3AF; }
.sk-comment-submit { background: #2563EB; color: #fff; border: none; padding: 8px 18px; border-radius: 6px; font-size: 13px; font-weight: 600; cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 6px; }
.sk-comment-submit:hover:not(:disabled) { background: #1D4ED8; }
.sk-comment-submit:disabled { opacity: 0.6; cursor: wait; }
.sk-comment-feedback { font-size: 12px; margin-top: 8px; min-height: 16px; }

.sk-comments-login-note { background: #F3F4F6; border: 1px dashed #D1D5DB; padding: 14px 18px; border-radius: 8px; font-size: 13px; color: #4B5563; margin-bottom: 20px; }
.sk-comments-login-note i { color: #2563EB; margin-right: 4px; }
.sk-comments-login-note a { color: #2563EB; font-weight: 600; }

.sk-comments-empty { padding: 24px; background: #F9FAFB; border: 1px dashed #D1D5DB; border-radius: 8px; text-align: center; color: #6B7280; font-size: 13px; }
.sk-comments-empty i { color: #9CA3AF; margin-right: 6px; }

.sk-comment-list { list-style: none; padding: 0; margin: 0; }
.sk-comment { background: #fff; border: 1px solid #E5E7EB; border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; }
.sk-comment-author { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.sk-comment-avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.sk-comment-avatar-ph { background: #DBEAFE; color: #2563EB; display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; }
.sk-comment-meta { flex: 1; min-width: 0; }
.sk-comment-name { font-size: 13px; font-weight: 600; color: #111827; text-decoration: none; display: block; line-height: 1.2; }
a.sk-comment-name:hover { color: #2563EB; }
.sk-comment-time { font-size: 11px; color: #9CA3AF; }
.sk-comment-delete { background: none; border: none; color: #9CA3AF; cursor: pointer; padding: 4px 8px; font-size: 12px; border-radius: 4px; transition: color 0.15s, background 0.15s; }
.sk-comment-delete:hover { color: #DC2626; background: #FEF2F2; }
.sk-comment-content { font-size: 14px; color: #374151; line-height: 1.6; margin-bottom: 8px; white-space: pre-wrap; word-break: break-word; }
.sk-comment-youtube { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 8px; margin-top: 10px; background: #000; }
.sk-comment-youtube iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }
.sk-comment-doc { display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; background: #FEF3C7; color: #92400E; border-radius: 6px; font-size: 12px; font-weight: 500; text-decoration: none; margin-top: 8px; transition: background 0.15s; }
.sk-comment-doc:hover { background: #FDE68A; }
.sk-comment-doc-name { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sk-comment-doc-size { font-size: 10px; opacity: 0.7; }

@media (max-width: 640px) {
    .sk-comment-form { padding: 12px; }
    .sk-comment-extras input[type=url] { width: 100%; min-width: 0; }
}