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

Accordion Levels:
Level 1: .accordion-group / .panel-group - Darkest (sections)
Level 2: .accordion-pillar / .panel-pillar - Medium (states)
Level 3: .accordion-detail / .panel-detail - Light (cities)
Level 4: .accordion-spec / .panel-spec - Minimal (templates)

JavaScript Required: nsg_accordion.js
===========================================================================
2026-02-21 v1.0 - Copied from Eagles Flock
===========================================================================
*/

/* Level 1: GROUP (sections) */
.accordion-group {
    background: var(--color-primary-dark);
    color: var(--color-white);
    cursor: pointer;
    padding: 14px 18px;
    width: 100%;
    border: none;
    border-radius: var(--border-radius-md);
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 12px;
    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 (states) */
.accordion-pillar {
    background: var(--color-secondary);
    color: var(--color-primary-dark);
    cursor: pointer;
    padding: 12px 16px;
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 8px;
    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 16px;
}
.panel-pillar.open { max-height: 6000px; padding: 16px; }

/* Level 3: DETAIL (cities) */
.accordion-detail {
    background: var(--color-white);
    color: var(--color-primary);
    cursor: pointer;
    padding: 10px 14px;
    width: 100%;
    border: 1px solid var(--color-secondary);
    border-radius: var(--border-radius-sm);
    text-align: left;
    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-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 14px;
}
.panel-detail.open { max-height: 4000px; padding: 14px; }

/* Level 4: SPEC (individual templates) */
.accordion-spec {
    background: transparent;
    color: var(--color-text);
    cursor: pointer;
    padding: 8px 12px;
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    text-align: left;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 5px;
    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 12px;
}
.panel-spec.open { max-height: 2000px; padding: 12px; }