/* Explain: CSS for the interactive module workbench and its tools. */
/* ---------- Module workbench (interactive hub) ---------- */
.module-hub {
    margin-top: 3rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.008));
}

.module-tabs {
    display: flex;
    gap: 0.4rem;
    padding: 0.7rem;
    overflow-x: auto;
    border-bottom: 1px solid var(--border-color);
    background: rgba(9, 14, 24, 0.55);
    scrollbar-width: thin;
}
.module-tab {
    flex: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.6rem 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.module-tab i { color: var(--text-dim); transition: color 0.2s ease; }
.module-tab:hover { color: var(--text-color); border-color: var(--border-strong); }
.module-tab.is-active {
    color: var(--text-color);
    border-color: rgba(34, 211, 238, 0.5);
    background: var(--primary-soft);
}
.module-tab.is-active i { color: var(--primary-color); }

.module-panel { display: none; padding: 1.25rem; }
.module-panel.is-active { display: block; }
.module-panel[hidden] { display: none; }
@media (min-width: 768px) { .module-panel { padding: 1.75rem; } }

.module-grid { display: grid; gap: 1.5rem; }
@media (min-width: 900px) {
    .module-grid { grid-template-columns: 1fr 1fr; align-items: start; }
}

.module-title { font-size: 1.4rem; font-weight: 700; }
.module-text { margin-top: 0.75rem; color: var(--text-muted); font-size: 0.97rem; }

.feature-list { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 0.7rem; }
.feature-list li { display: flex; align-items: flex-start; gap: 0.6rem; color: var(--text-color); font-size: 0.94rem; }
.feature-list i { margin-top: 0.32rem; color: var(--accent-color); font-size: 0.85rem; flex: none; }

.tool-card {
    padding: 1.35rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(3, 6, 12, 0.5);
}
.tool-title {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-size: 1.02rem;
    font-weight: 700;
}
.tool-title i { color: var(--primary-color); }

.tool-form { margin-top: 1.1rem; display: grid; gap: 0.9rem; }
.color-row { display: flex; gap: 0.5rem; }
.color-input {
    width: 100%;
    height: 44px;
    padding: 0.2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    cursor: pointer;
}
.field-hint { display: block; margin-top: 0.35rem; font-size: 0.78rem; color: var(--text-dim); }

.tool-card .btn-primary { margin-top: 1.1rem; }

.tool-output { margin-top: 1.1rem; }
.output-pre {
    max-height: 20rem;
    overflow: auto;
    margin: 0;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(3, 6, 12, 0.75);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.75;
    color: #c6d3e6;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}
.output-actions { display: flex; justify-content: flex-start; margin-top: 0.75rem; }
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.6rem 1.1rem;
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.035);
    color: var(--text-color);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.copy-btn i { color: var(--primary-color); }
.copy-btn:hover { border-color: var(--primary-color); background: rgba(34, 211, 238, 0.09); color: var(--primary-color); }
.copy-btn:focus-visible { outline: 2px solid var(--primary-color); outline-offset: 2px; }