/* =============================================================================
   article29.css - PT vs RC SEISMIC SYSTEM SELECTION DECISION TREE
   Article : Post Tension Slab vs RC Slab in Earthquakes
   Chemin  : public_html/assets/css/articles/article29.css
   Dashboard, Extra stylesheets : css/articles/article29.css

   Repris de l'ancien article PHP (bloc <style> de l'en-tete), limite a
   l'outil insere par js/articles/article29.js. Toutes les regles sont
   prefixees par .decision-tree-widget.
   ============================================================================= */

.decision-tree-widget {
    background: #f4f8fb;
    border: 1px solid #d0e2ee;
    border-top: 4px solid #2C5370;
    border-radius: 4px;
    padding: 28px 30px;
    margin: 36px 0;
}
.decision-tree-widget .dt-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}
.decision-tree-widget .dt-header .dt-icon {
    width: 38px;
    height: 38px;
    background: #2C5370;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.decision-tree-widget .dt-header .dt-icon svg { width: 20px; height: 20px; fill: #fff; }
.decision-tree-widget .dt-title {
    font-family: var(--font-heading,'Merriweather',serif);
    font-size: 1.05rem;
    font-weight: 700;
    color: #2C5370;
    margin: 0;
}
.decision-tree-widget .dt-subtitle {
    font-size: 0.85rem;
    color: #666;
    margin: 4px 0 20px 50px;
}
.decision-tree-widget .dt-step {
    display: none;
}
.decision-tree-widget .dt-step.active {
    display: block;
}
.decision-tree-widget .dt-question {
    font-family: var(--font-heading,'Merriweather',serif);
    font-size: 0.98rem;
    font-weight: 700;
    color: #1a3347;
    margin: 0 0 16px;
    line-height: 1.5;
}
.decision-tree-widget .dt-step-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #2C5370;
    margin-bottom: 10px;
}
.decision-tree-widget .dt-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.decision-tree-widget .dt-btn {
    display: block;
    width: 100%;
    background: #fff;
    border: 1.5px solid #b0cfe0;
    border-radius: 4px;
    padding: 12px 16px;
    text-align: left;
    font-size: 0.92rem;
    color: #2C5370;
    cursor: pointer;
    transition: background 0.18s, border-color 0.18s, color 0.18s;
    font-family: inherit;
    line-height: 1.45;
}
.decision-tree-widget .dt-btn:hover {
    background: #2C5370;
    border-color: #2C5370;
    color: #fff;
}
.decision-tree-widget .dt-btn .dt-btn-label {
    font-weight: 600;
    display: block;
    margin-bottom: 2px;
}
.decision-tree-widget .dt-btn .dt-btn-sub {
    font-size: 0.82rem;
    opacity: 0.75;
}
.decision-tree-widget .dt-result {
    display: none;
    border-radius: 4px;
    padding: 20px 22px;
    margin-top: 0;
}
.decision-tree-widget .dt-result.active {
    display: block;
}
.decision-tree-widget .dt-result.result-pt {
    background: #e8f4ed;
    border-left: 5px solid #2a7a4b;
}
.decision-tree-widget .dt-result.result-rc {
    background: #fdf4ec;
    border-left: 5px solid #b85c2a;
}
.decision-tree-widget .dt-result.result-hybrid {
    background: #eef4fb;
    border-left: 5px solid #2C5370;
}
.decision-tree-widget .dt-result .dr-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}
.decision-tree-widget .result-pt    .dr-label { color: #2a7a4b; }
.decision-tree-widget .result-rc    .dr-label { color: #b85c2a; }
.decision-tree-widget .result-hybrid .dr-label { color: #2C5370; }
.decision-tree-widget .dt-result .dr-title {
    font-family: var(--font-heading,'Merriweather',serif);
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: #111;
}
.decision-tree-widget .dt-result p {
    font-size: 0.92rem;
    color: #444;
    margin: 0 0 10px;
    line-height: 1.65;
}
.decision-tree-widget .dt-result ul {
    margin: 0 0 10px;
    padding-left: 18px;
}
.decision-tree-widget .dt-result ul li {
    font-size: 0.9rem;
    color: #444;
    margin-bottom: 4px;
    line-height: 1.55;
}
.decision-tree-widget .dt-restart {
    margin-top: 14px;
    background: none;
    border: 1.5px solid #9ab5c8;
    color: #2C5370;
    border-radius: 3px;
    padding: 8px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.18s, color 0.18s;
}
.decision-tree-widget .dt-restart:hover {
    background: #2C5370;
    color: #fff;
    border-color: #2C5370;
}
.decision-tree-widget .dt-progress {
    display: flex;
    gap: 6px;
    margin-bottom: 18px;
}
.decision-tree-widget .dt-progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #c8dce8;
    transition: background 0.2s;
}
.decision-tree-widget .dt-progress-dot.done {
    background: #2C5370;
}
.decision-tree-widget .dt-progress-dot.current {
    background: #b85c2a;
}

/* --- Ajouts ------------------------------------------------------------- */
.decision-tree-widget .dt-btn:focus-visible,
.decision-tree-widget .dt-restart:focus-visible { outline: 2px solid #2C5370; outline-offset: 2px; }
.decision-tree-widget .dt-btn:hover .dt-btn-sub,
.decision-tree-widget .dt-btn:focus-visible .dt-btn-sub { opacity: 0.9; }
.decision-tree-widget .dt-progress[hidden] { display: none; }
.decision-tree-widget .dt-disclaimer {
    font-size: 0.78rem;
    color: #888;
    font-style: italic;
    line-height: 1.55;
    margin: 18px 0 0;
    padding-top: 12px;
    border-top: 1px dashed #c8dce8;
}

@media (max-width: 600px) {
    .decision-tree-widget { padding: 20px 16px; }
    .decision-tree-widget .dt-subtitle { margin-left: 0; }
}