/*
===========================================================================
DO NOT MODIFY THIS FILE - NSG STANDARDS
===========================================================================
File: /var/www/html/eaglesflock.nsgia.com/static/css/nsg_accordion.css
Type: CSS Accordion Styles
Purpose: 4-level accordion hierarchy for collapsible content

TUTORIAL:
This CSS creates a 4-level accordion system. Each level has darker
styling so users can see the hierarchy.

Accordion Levels:
Level 1: .accordion-group / .panel-group - Darkest (category headers)
Level 2: .accordion-pillar / .panel-pillar - Medium (subcategories)
Level 3: .accordion-detail / .panel-detail - Light (details)
Level 4: .accordion-spec / .panel-spec - Minimal (specifications)

HTML Pattern:
<button class="accordion-group">Level 1 Header</button>
<div class="panel-group">
    <button class="accordion-pillar">Level 2 Header</button>
    <div class="panel-pillar">
        Content or more nested accordions...
    </div>
</div>

JavaScript Required: nsg_accordion.js (toggles .active and .open classes)
===========================================================================
2025-12-30 v1.0 - Initial creation (copied from NSG standards)
===========================================================================
*/

/* ===========================================
   LEVEL 1: GROUP HEADERS (darkest)
   =========================================== */
.accordion-group {
    background: var(--color-primary-dark);
    color: var(--color-white);
    cursor: pointer;
    padding: 18px 20px;
    width: 100%;
    border: none;
    border-radius: var(--border-radius-md);
    text-align: left;
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 15px;
    transition: background-color 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-group:first-of-type {
    margin-top: 0;
}

.accordion-group:hover {
    background: var(--color-primary);
}

.accordion-group::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: bold;
}

.accordion-group.active::after {
    content: '−';
}

.accordion-group.active {
    background: var(--color-primary);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.panel-group {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: var(--color-secondary-light);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    padding: 0 15px;
    border-left: 4px solid var(--color-primary-dark);
}

.panel-group.open {
    max-height: 8000px;
    padding: 15px;
}

/* ===========================================
   LEVEL 2: PILLAR HEADERS (medium)
   =========================================== */
.accordion-pillar {
    background: var(--color-secondary);
    color: var(--color-primary-dark);
    cursor: pointer;
    padding: 14px 18px;
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    text-align: left;
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 10px;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-pillar:first-of-type {
    margin-top: 0;
}

.accordion-pillar:hover {
    background: var(--color-secondary-dark);
    color: var(--color-white);
}

.accordion-pillar::after {
    content: '+';
    font-size: 1.1rem;
    color: var(--color-primary);
}

.accordion-pillar.active::after {
    content: '−';
    color: var(--color-white);
}

.accordion-pillar.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.panel-pillar {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    padding: 0 18px;
}

.panel-pillar.open {
    max-height: 6000px;
    padding: 18px;
}

/* ===========================================
   LEVEL 3: DETAIL HEADERS (light)
   =========================================== */
.accordion-detail {
    background: var(--color-white);
    color: var(--color-primary);
    cursor: pointer;
    padding: 12px 16px;
    width: 100%;
    border: 1px solid var(--color-secondary);
    border-radius: var(--border-radius-sm);
    text-align: left;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    margin-top: 8px;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-detail:first-of-type {
    margin-top: 0;
}

.accordion-detail:hover {
    background: var(--color-secondary-light);
    border-color: var(--color-primary-light);
}

.accordion-detail::after {
    content: '+';
    font-size: 1rem;
    color: var(--color-primary-light);
}

.accordion-detail.active::after {
    content: '−';
}

.accordion-detail.active {
    background: var(--color-secondary-light);
    border-color: var(--color-primary);
    border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
}

.panel-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--color-bg);
    border: 1px solid var(--color-secondary);
    border-top: none;
    border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
    padding: 0 16px;
}

.panel-detail.open {
    max-height: 4000px;
    padding: 16px;
}

/* ===========================================
   LEVEL 4: SPEC HEADERS (minimal)
   =========================================== */
.accordion-spec {
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    padding: 10px 14px;
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    text-align: left;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    margin-top: 6px;
    transition: all 0.2s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-spec:first-of-type {
    margin-top: 0;
}

.accordion-spec:hover {
    background: var(--color-secondary-light);
}

.accordion-spec::after {
    content: '+';
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.accordion-spec.active::after {
    content: '−';
}

.accordion-spec.active {
    background: var(--color-secondary-light);
}

.panel-spec {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--border-radius-sm) var(--border-radius-sm);
    padding: 0 14px;
}

.panel-spec.open {
    max-height: 2000px;
    padding: 14px;
}

/* ===========================================
   PANEL TYPOGRAPHY
   =========================================== */
.panel-group p,
.panel-pillar p,
.panel-detail p,
.panel-spec p {
    margin: var(--spacing-md) 0;
    color: var(--color-text);
    line-height: var(--line-height-base);
}

.panel-group ul,
.panel-pillar ul,
.panel-detail ul,
.panel-spec ul {
    padding-left: var(--spacing-lg);
    margin: var(--spacing-md) 0;
}

.panel-group li,
.panel-pillar li,
.panel-detail li,
.panel-spec li {
    margin-bottom: var(--spacing-sm);
}