/**
 * HumiDesk — Program Detail Split-Pane Execution Center
 * Phase C: replaces single-column step track with left-nav + right-panel layout
 *
 * DO NOT merge into shortcodes.php inline style blocks (宪法第九章)
 */

/* ─── Root container ─────────────────────────────────────────────────────── */
.hd-prog-exec {
    display: flex;
    gap: 0;
    min-height: 520px;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    overflow: hidden;
    background: #fff;
}

/* ─── Left nav ───────────────────────────────────────────────────────────── */
.hd-prog-exec__nav {
    width: 260px;
    flex-shrink: 0;
    border-right: 1px solid #e2e8f0;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.hd-prog-exec__nav-header {
    padding: 18px 16px 14px;
    border-bottom: 1px solid #e2e8f0;
}

.hd-prog-exec__back {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: #7c3aed;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    margin-bottom: 10px;
}
.hd-prog-exec__back:hover { color: #6d28d9; }
.hd-prog-exec__back svg { width: 12px; height: 12px; }

.hd-prog-exec__nav-prog-title {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.4;
}

.hd-prog-exec__nav-prog-meta {
    margin: 4px 0 0;
    font-size: 11px;
    color: #64748b;
}

/* Step list */
.hd-prog-exec__step-list {
    list-style: none;
    margin: 0;
    padding: 8px 0;
    flex: 1;
}

.hd-prog-exec__step-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 14px 9px 16px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: background 0.1s, border-color 0.1s;
    position: relative;
}
.hd-prog-exec__step-item:hover {
    background: #f1f5f9;
}
.hd-prog-exec__step-item.is-active {
    background: #ede9fe;
    border-left-color: #7c3aed;
}

/* Status dot */
.hd-prog-exec__step-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    margin-top: 1px;
}
.hd-prog-exec__step-dot.pending   { background: #f1f5f9; border: 2px solid #cbd5e1; color: #94a3b8; }
.hd-prog-exec__step-dot.in_progress { background: #dbeafe; border: 2px solid #93c5fd; color: #2563eb; }
.hd-prog-exec__step-dot.done,
.hd-prog-exec__step-dot.completed { background: #22c55e; border: 2px solid #16a34a; color: #fff; }

.hd-prog-exec__step-info { flex: 1; min-width: 0; }

.hd-prog-exec__step-title {
    margin: 0;
    font-size: 12px;
    font-weight: 600;
    color: #0f172a;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.hd-prog-exec__step-title.is-done {
    color: #94a3b8;
    text-decoration: line-through;
}
.hd-prog-exec__step-due {
    display: block;
    font-size: 10px;
    color: #94a3b8;
    margin-top: 2px;
}

/* ─── Right panel ────────────────────────────────────────────────────────── */
.hd-prog-exec__panel {
    flex: 1;
    min-width: 0;
    overflow-y: auto;
    padding: 24px 28px 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Panel header */
.hd-prog-exec__panel-header {
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 14px;
}
.hd-prog-exec__panel-step-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #7c3aed;
    margin-bottom: 6px;
}
.hd-prog-exec__panel-title {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.3;
}
.hd-prog-exec__panel-status-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.hd-prog-exec__status-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
}
.hd-prog-exec__status-pill.pending    { background: #f1f5f9; color: #475569; }
.hd-prog-exec__status-pill.in_progress { background: #dbeafe; color: #1d4ed8; }
.hd-prog-exec__status-pill.done,
.hd-prog-exec__status-pill.completed  { background: #dcfce7; color: #15803d; }
.hd-prog-exec__status-pill::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}
.hd-prog-exec__due-text {
    font-size: 12px;
    color: #64748b;
}

/* Panel sections */
.hd-prog-exec__section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.hd-prog-exec__section-title {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: #64748b;
    margin: 0;
}

/* Task description prose */
.hd-prog-exec__task-content {
    font-size: 14px;
    line-height: 1.7;
    color: #1e293b;
}
.hd-prog-exec__task-content h2,
.hd-prog-exec__task-content h3 {
    margin: 1.1em 0 .5em;
    color: #0f172a;
    font-weight: 700;
}
.hd-prog-exec__task-content h2 { font-size: 16px; }
.hd-prog-exec__task-content h3 { font-size: 14px; }
.hd-prog-exec__task-content p  { margin: 0 0 .75em; }
.hd-prog-exec__task-content ul,
.hd-prog-exec__task-content ol { margin: 0 0 .75em; padding-left: 1.4em; }
.hd-prog-exec__task-content li { margin-bottom: .3em; }
.hd-prog-exec__task-content strong { font-weight: 700; }
.hd-prog-exec__task-content em    { font-style: italic; }
.hd-prog-exec__task-content blockquote {
    margin: .75em 0;
    padding: 10px 14px;
    border-left: 3px solid #e2e8f0;
    background: #f8fafc;
    color: #475569;
    border-radius: 0 6px 6px 0;
}
.hd-prog-exec__task-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-bottom: .75em;
}
.hd-prog-exec__task-content th,
.hd-prog-exec__task-content td {
    border: 1px solid #e2e8f0;
    padding: 7px 10px;
    text-align: left;
}
.hd-prog-exec__task-content th { background: #f8fafc; font-weight: 700; }
.hd-prog-exec__task-content figure { margin: .75em 0; }

/* Skeleton loading */
.hd-prog-exec__skeleton {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 4px 0;
}
.hd-prog-exec__skeleton-line {
    height: 14px;
    border-radius: 6px;
    background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
    background-size: 200% 100%;
    animation: hd-skeleton-shimmer 1.4s ease infinite;
}
.hd-prog-exec__skeleton-line.short { width: 40%; }
.hd-prog-exec__skeleton-line.medium { width: 70%; }
.hd-prog-exec__skeleton-line.long { width: 95%; }
.hd-prog-exec__skeleton-line.title { height: 20px; width: 60%; }
@keyframes hd-skeleton-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Materials list */
.hd-prog-exec__materials {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.hd-prog-exec__materials-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}
.hd-prog-exec__materials-group-title {
    margin: 0;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #64748b;
}
.hd-prog-exec__material-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    text-decoration: none;
    color: #0f172a;
    font-size: 13px;
    font-weight: 500;
    background: #fafbfc;
    transition: background 0.1s, border-color 0.1s;
}
.hd-prog-exec__material-item:hover {
    background: #f1f5f9;
    border-color: #c7d2fe;
    color: #0f172a;
}
.hd-prog-exec__material-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}
.hd-prog-exec__material-icon.doc      { background: #dbeafe; }
.hd-prog-exec__material-icon.video    { background: #fce7f3; }
.hd-prog-exec__material-icon.download { background: #dcfce7; }
.hd-prog-exec__material-icon.tool     { background: #fef3c7; }
.hd-prog-exec__material-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.hd-prog-exec__material-label { min-width: 0; }
.hd-prog-exec__material-meta {
    font-size: 11px;
    color: #94a3b8;
}
.hd-prog-exec__material-arrow { color: #94a3b8; font-size: 12px; }

/* Checklist */
.hd-prog-exec__checklist {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.hd-prog-exec__check-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #fafbfc;
    cursor: pointer;
    transition: background 0.1s;
}
.hd-prog-exec__check-item:hover { background: #f1f5f9; }
.hd-prog-exec__check-item.is-checked {
    background: #f0fdf4;
    border-color: #bbf7d0;
}
.hd-prog-exec__check-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    accent-color: #22c55e;
    cursor: pointer;
}
.hd-prog-exec__check-label {
    font-size: 13px;
    color: #1e293b;
    line-height: 1.4;
}
.hd-prog-exec__check-item.is-checked .hd-prog-exec__check-label {
    text-decoration: line-through;
    color: #94a3b8;
}

/* CTA area */
.hd-prog-exec__cta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 4px;
}
.hd-prog-exec__cta-hint {
    width: 100%;
    margin: 0 0 4px;
    font-size: 12px;
    color: #64748b;
}
.hd-prog-exec__cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 22px;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.12s, transform 0.08s;
}
.hd-prog-exec__cta-btn:active { transform: scale(.98); }
.hd-prog-exec__cta-btn.primary { background: #7c3aed; color: #fff; }
.hd-prog-exec__cta-btn.primary:hover { background: #6d28d9; }
.hd-prog-exec__cta-btn.secondary { background: #f1f5f9; color: #334155; border: 1px solid #e2e8f0; }
.hd-prog-exec__cta-btn.secondary:hover { background: #e2e8f0; }
.hd-prog-exec__cta-btn:disabled { opacity: .45; cursor: not-allowed; }

/* Empty / no-task state */
.hd-prog-exec__empty {
    text-align: center;
    padding: 40px 20px;
    color: #94a3b8;
    font-size: 14px;
}

/* ── Instructor's Take callout ─────────────────────────────────────────── */
.hd-prog-exec__instructor-take {
    background: #f5f3ff;
    border-left: 3px solid #7c3aed;
    border-radius: 0 8px 8px 0;
    padding: 12px 16px;
    margin: 0 0 16px;
    position: relative;
}
.hd-prog-exec__instructor-take-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #7c3aed;
    margin-bottom: 6px;
}
.hd-prog-exec__instructor-take-body {
    margin: 0 0 6px;
    padding: 0;
    font-size: 14px;
    line-height: 1.65;
    color: #1e1b4b;
    font-style: italic;
    border: none;
    white-space: pre-wrap;
}
.hd-prog-exec__instructor-take-attr {
    font-size: 11px;
    color: #a78bfa;
    display: block;
}

/* ─── Mobile: stack vertically ───────────────────────────────────────────── */
@media (max-width: 640px) {
    .hd-prog-exec {
        flex-direction: column;
        min-height: unset;
    }
    .hd-prog-exec__nav {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
        max-height: 200px;
    }
    .hd-prog-exec__step-list {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        padding: 6px 8px;
        gap: 4px;
    }
    .hd-prog-exec__step-item {
        flex-direction: column;
        align-items: center;
        gap: 4px;
        min-width: 72px;
        padding: 8px 6px;
        border-left: none;
        border-bottom: 3px solid transparent;
        border-radius: 8px;
        text-align: center;
    }
    .hd-prog-exec__step-item.is-active {
        background: #ede9fe;
        border-bottom-color: #7c3aed;
    }
    .hd-prog-exec__step-title {
        font-size: 10px;
        white-space: normal;
        text-align: center;
        overflow: visible;
        text-overflow: unset;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .hd-prog-exec__step-due { display: none; }
    .hd-prog-exec__panel { padding: 18px 16px 24px; }
}

/* ─── F2-B: Step Feed ────────────────────────────────────────────────────── */
.hd-prog-exec__feed {
    margin-top: 28px;
    border-top: 1px solid #e2e8f0;
    padding-top: 20px;
}

.hd-prog-exec__feed-header {
    font-size: 13px;
    font-weight: 700;
    color: #5b21b6;
    margin-bottom: 14px;
    letter-spacing: .01em;
}

.hd-prog-exec__feed-empty {
    font-size: 13px;
    color: #94a3b8;
    margin: 0 0 14px;
}

.hd-prog-exec__feed-comment,
.hd-prog-exec__feed-reply {
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.hd-prog-exec__feed-comment.is-coach,
.hd-prog-exec__feed-reply.is-coach {
    background: #f5f3ff;
    border-color: #ddd6fe;
}

.hd-prog-exec__feed-replies {
    margin-top: 8px;
    margin-left: 16px;
    border-left: 2px solid #ddd6fe;
    padding-left: 12px;
}

.hd-prog-exec__feed-reply {
    margin-bottom: 6px;
}

.hd-prog-exec__feed-comment-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}

.hd-prog-exec__feed-author {
    font-size: 12px;
    font-weight: 700;
    color: #0f172a;
}

.hd-prog-exec__feed-role {
    font-size: 10px;
    font-weight: 600;
    padding: 1px 7px;
    border-radius: 999px;
    background: #e2e8f0;
    color: #475569;
}

.hd-prog-exec__feed-role.coach,
.hd-prog-exec__feed-role.admin {
    background: #ede9fe;
    color: #5b21b6;
}

.hd-prog-exec__feed-time {
    font-size: 11px;
    color: #94a3b8;
    margin-left: auto;
}

.hd-prog-exec__feed-comment-body {
    font-size: 13px;
    color: #334155;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
}

.hd-prog-exec__feed-compose {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hd-prog-exec__feed-textarea {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #c4b5fd;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 13px;
    color: #0f172a;
    resize: vertical;
    font-family: inherit;
    line-height: 1.5;
    transition: border-color .15s;
}

.hd-prog-exec__feed-textarea:focus {
    outline: none;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}

.hd-prog-exec__feed-submit {
    align-self: flex-end;
    background: #7c3aed;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s, opacity .15s;
}

.hd-prog-exec__feed-submit:hover { background: #6d28d9; }
.hd-prog-exec__feed-submit:disabled { opacity: .5; cursor: not-allowed; }

.hd-prog-exec__feed-msg {
    font-size: 12px;
    font-weight: 600;
}

/* ── Coach/Admin rich composer toolbar ─────────────────────────────────── */
.hd-prog-exec__feed-toolbar {
    display: flex;
    gap: 4px;
    padding: 6px 8px;
    background: #f5f3ff;
    border: 1px solid #ddd6fe;
    border-radius: 8px 8px 0 0;
    border-bottom: none;
}

.hd-prog-exec__feed-tb-btn {
    background: #fff;
    border: 1px solid #ddd6fe;
    border-radius: 5px;
    padding: 3px 9px;
    font-size: 12px;
    cursor: pointer;
    color: #5b21b6;
    line-height: 1.4;
    transition: background .12s;
}
.hd-prog-exec__feed-tb-btn:hover { background: #ede9fe; }

.hd-prog-exec__feed-textarea.is-coach {
    border-radius: 0 0 8px 8px;
    border-color: #c4b5fd;
    background: #faf5ff;
    margin-top: 0;
}
.hd-prog-exec__feed-textarea.is-coach:focus {
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}

/* Reply button on comments (coach/admin only) */
.hd-prog-exec__feed-reply-btn {
    background: none;
    border: 1px solid #ddd6fe;
    border-radius: 6px;
    padding: 2px 10px;
    font-size: 11px;
    color: #7c3aed;
    cursor: pointer;
    margin-left: auto;
    font-weight: 600;
    transition: background .12s;
}
.hd-prog-exec__feed-reply-btn:hover { background: #f5f3ff; }

/* Inline reply form */
.hd-prog-exec__feed-reply-form {
    margin-top: 10px;
    padding: 10px;
    background: #faf5ff;
    border: 1px solid #ddd6fe;
    border-radius: 10px;
}