/**
 * Controls & Smart Systems Guide — unique components
 * Layout constraint, hero badge/subtitle, TOC column layout,
 * spec cards, diagrams, FAQ accordion, guide footer.
 *
 * @package Techlumen
 */

/* ============================================
   LAYOUT CONSTRAINT
   ============================================ */
.controls-guide-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

/* ============================================
   HERO — full-width bleed + radial glow
   ============================================ */
.controls-guide-wrapper .guide-hero {
    background: var(--guide-gradient);
    color: #ffffff;
    margin: 0 -2rem;
    padding: clamp(2rem, 6vw, 3.5rem) clamp(1.5rem, 5vw, 2.5rem) clamp(2rem, 5vw, 3rem);
    position: relative;
    overflow: hidden;
    border-radius: 0 0 var(--guide-radius-xl) var(--guide-radius-xl);
}

.controls-guide-wrapper .guide-hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255,255,255,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.controls-guide-wrapper .guide-hero h1 {
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
    color: #ffffff;
}

.controls-guide-wrapper .guide-hero .subtitle {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    opacity: 0.92;
    font-weight: 400;
    max-width: 640px;
    line-height: 1.6;
    color: #ffffff;
}

.controls-guide-wrapper .guide-hero .hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--guide-radius-pill);
    padding: 0.3rem 1rem;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    letter-spacing: 0.5px;
    color: #ffffff;
}

/* ============================================
   CONTENT AREA
   ============================================ */
.controls-guide-wrapper .guide-content {
    padding: clamp(1.5rem, 4vw, 2.5rem);
}

/* ============================================
   h2 — border-bottom accent
   ============================================ */
.controls-guide-wrapper h2 {
    margin-top: 50px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--guide-border);
}

/* ============================================
   TOC — column layout
   ============================================ */
.controls-guide-wrapper .toc {
    border: 1px solid var(--guide-border);
    padding: 25px 30px;
    margin-bottom: 40px;
    box-shadow: var(--guide-shadow-sm);
    position: static;
    max-width: none;
}

.controls-guide-wrapper .toc h2 {
    font-size: 1.1rem;
    color: var(--guide-accent-dark);
    margin: 0 0 15px;
    border: none;
    padding: 0;
}

.controls-guide-wrapper .toc ol {
    margin: 0;
    padding-left: 1.2rem;
    columns: 2;
    column-gap: 2rem;
}

.controls-guide-wrapper .toc li {
    margin-bottom: 0.35rem;
    font-size: 0.92rem;
    break-inside: avoid;
}

.controls-guide-wrapper .toc a {
    color: var(--guide-text-secondary);
    text-decoration: none;
    border-bottom: 1px dotted var(--guide-accent);
    transition: var(--guide-transition);
}

.controls-guide-wrapper .toc a:hover {
    color: var(--guide-accent);
}

/* ============================================
   SPEC CARDS GRID
   ============================================ */
.controls-guide-wrapper .spec-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1rem;
    margin: 1.25rem 0 1.75rem;
}

.controls-guide-wrapper .spec-card {
    background: var(--guide-bg-card);
    border: 1px solid var(--guide-border);
    border-radius: var(--guide-radius-md);
    padding: 1.15rem;
    border-top: 3px solid var(--guide-accent);
    transition: var(--guide-transition);
    box-shadow: var(--guide-shadow-sm);
}

.controls-guide-wrapper .spec-card:hover {
    box-shadow: var(--guide-shadow-md);
    transform: translateY(-2px);
    border-color: var(--guide-accent);
}

.controls-guide-wrapper .spec-card .card-label {
    font-size: 0.78rem;
    color: var(--guide-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.3rem;
}

.controls-guide-wrapper .spec-card .card-value {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--guide-accent-dark);
}

.controls-guide-wrapper .spec-card .card-note {
    font-size: 0.82rem;
    color: var(--guide-text-secondary);
    margin-top: 0.25rem;
}

/* ============================================
   DIAGRAM CONTAINER
   ============================================ */
.controls-guide-wrapper .diagram-container {
    background: var(--guide-bg-card);
    border: 1px solid var(--guide-border);
    border-radius: var(--guide-radius-lg);
    padding: 1.5rem;
    margin: 1.5rem 0;
    text-align: center;
    box-shadow: var(--guide-shadow-sm);
}

.controls-guide-wrapper .diagram-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--guide-accent-dark);
    margin-bottom: 0.75rem;
}

.controls-guide-wrapper .diagram-caption {
    font-size: 0.85rem;
    color: var(--guide-text-muted);
    margin-top: 0.75rem;
    font-style: italic;
}

/* ============================================
   FAQ ACCORDION
   ============================================ */
.controls-guide-wrapper .faq-item {
    background: var(--guide-bg-card);
    border: 1px solid var(--guide-border);
    border-radius: var(--guide-radius-md);
    margin-bottom: 0.75rem;
    overflow: hidden;
    box-shadow: var(--guide-shadow-sm);
}

.controls-guide-wrapper .faq-question {
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: var(--guide-accent-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.controls-guide-wrapper .faq-question::after {
    content: '+';
    font-size: 1.3rem;
    color: var(--guide-accent);
    font-weight: 300;
}

.controls-guide-wrapper .faq-question.active::after {
    content: '\2212';
}

.controls-guide-wrapper .faq-answer {
    padding: 0 1.25rem 1rem;
    font-size: 0.92rem;
    display: none;
    color: var(--guide-text-secondary);
}

.controls-guide-wrapper .faq-answer.active {
    display: block;
}

/* ============================================
   GUIDE FOOTER (branded CTA block)
   ============================================ */
.controls-guide-wrapper .guide-footer {
    background: var(--guide-gradient);
    color: #fff;
    padding: 2rem 2.5rem;
    border-radius: var(--guide-radius-xl);
    margin: 50px 0 30px;
    text-align: center;
    font-size: 0.85rem;
    line-height: 1.7;
}

.controls-guide-wrapper .guide-footer strong {
    color: #fff;
}

.controls-guide-wrapper .guide-footer a {
    color: #FFFFFF;
    text-decoration: underline;
    text-decoration-color: rgba(255,255,255,0.4);
}

.controls-guide-wrapper .guide-footer a:hover {
    color: #fff;
}

/* ============================================
   RESPONSIVE — 768px
   ============================================ */
@media (max-width: 768px) {
    .controls-guide-wrapper .guide-hero {
        padding: 2rem 1.5rem;
    }

    .controls-guide-wrapper .guide-content {
        padding: 1.5rem;
    }

    .controls-guide-wrapper .toc ol {
        columns: 1;
    }

    .controls-guide-wrapper .spec-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* ============================================
   RESPONSIVE — 480px
   ============================================ */
@media (max-width: 480px) {
    .controls-guide-wrapper .spec-grid {
        grid-template-columns: 1fr;
    }
}