/* Research 1000 - Accordion Styles */

/* Models Grid */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.model-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--divider);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.model-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(74, 158, 255, 0.1);
}

.model-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.model-card h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.model-provider {
    font-size: 0.9rem;
    color: var(--text-secondary);
    opacity: 0.7;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.model-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.6;
}

.model-link {
    display: inline-block;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--accent);
    border-radius: 6px;
    text-align: center;
}

.model-link:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
    transform: translateX(4px);
}

.council-card {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, #1a1a2e 100%);
}

@media (max-width: 768px) {
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .council-card {
        grid-column: span 1;
    }
}

/* Loading */
.loading-message {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--divider);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    color: #ff6b6b;
    padding: 2rem;
    background-color: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.3);
    border-radius: 8px;
    margin: 2rem 0;
}

/* Back Links */
.back-link {
    margin-top: 4rem;
    text-align: center;
}

.back-link a,
.back-link-inline {
    color: var(--accent);
    text-decoration: none;
    font-weight: 400;
    transition: all 0.2s ease;
    display: inline-block;
    padding: 0.5rem 1rem;
}

.back-link a:hover,
.back-link-inline:hover {
    color: var(--text-primary);
    transform: translateX(-4px);
}

.back-link-inline {
    margin-bottom: 2rem;
}

/* Accordion Container */
.accordion-container {
    margin: 2rem 0;
}

/* Accordion Items */
.accordion-item {
    margin-bottom: 0.5rem;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--bg-secondary);
    border: 1px solid var(--divider);
}

.accordion-level-1 {
    margin-bottom: 1.5rem;
    border: 2px solid var(--divider);
}

.accordion-level-2 {
    margin: 0.75rem 0;
    margin-left: 1.5rem;
    border-left: 3px solid var(--accent);
}

.accordion-level-3 {
    margin: 0.5rem 0;
    margin-left: 1.5rem;
    border-left: 2px solid var(--problem-number);
    background-color: var(--bg-primary);
}

/* Accordion Headers */
.accordion-header {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.2s ease;
    user-select: none;
}

.accordion-header:hover {
    background-color: rgba(74, 158, 255, 0.05);
}

.accordion-header.active {
    background-color: rgba(74, 158, 255, 0.08);
}

.accordion-level-1 .accordion-header {
    padding: 1.5rem 2rem;
    font-size: 1.1rem;
    font-weight: 500;
}

.accordion-level-2 .accordion-header {
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

.accordion-level-3 .accordion-header {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
}

/* Accordion Icons */
.accordion-icon {
    color: var(--accent);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
    width: 1rem;
    display: inline-block;
}

.accordion-header.active .accordion-icon {
    transform: rotate(90deg);
}

/* Accordion Titles */
.accordion-title {
    color: var(--text-primary);
    flex: 1;
    line-height: 1.5;
}

.accordion-level-1 .accordion-title {
    font-weight: 500;
    font-size: 1.2rem;
}

.accordion-level-2 .accordion-title {
    font-weight: 400;
}

.accordion-level-3 .accordion-title {
    font-weight: 300;
    color: var(--text-secondary);
}

/* Accordion Content */
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-content.active {
    max-height: 50000px;
    transition: max-height 0.5s ease-in;
}

/* Accordion Text Content */
.accordion-text {
    padding: 1rem 1.5rem 1.5rem 3.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
    border-top: 1px solid var(--divider);
}

.accordion-level-1 .accordion-text {
    padding: 1.5rem 2rem 2rem 4.5rem;
    font-size: 1rem;
}

.accordion-level-2 .accordion-text {
    padding: 1rem 1.25rem 1.25rem 3rem;
    font-size: 0.95rem;
}

.accordion-level-3 .accordion-text {
    padding: 0.75rem 1rem 1rem 2.5rem;
    font-size: 0.9rem;
}

.accordion-text strong {
    color: var(--text-primary);
    font-weight: 500;
}

.accordion-text em {
    color: var(--accent);
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .accordion-level-2,
    .accordion-level-3 {
        margin-left: 0.75rem;
    }
    
    .accordion-header {
        padding: 1rem;
    }
    
    .accordion-level-1 .accordion-header {
        padding: 1.25rem 1rem;
        font-size: 1rem;
    }
    
    .accordion-text {
        padding: 0.75rem 1rem 1rem 2.5rem;
    }
    
    .accordion-level-1 .accordion-text {
        padding: 1rem 1rem 1.25rem 3rem;
    }
    
    .accordion-level-2 .accordion-text,
    .accordion-level-3 .accordion-text {
        padding: 0.75rem 1rem 1rem 2rem;
    }
}

@media (max-width: 480px) {
    .accordion-item {
        border-radius: 6px;
    }
    
    .accordion-header {
        gap: 0.75rem;
        padding: 0.875rem;
    }
    
    .accordion-title {
        font-size: 0.95rem;
    }
    
    .accordion-level-1 .accordion-title {
        font-size: 1rem;
    }
    
    .accordion-text {
        font-size: 0.9rem;
        padding: 0.75rem 0.875rem 0.875rem 2rem;
    }
}

/* Print Styles */
@media print {
    .accordion-header {
        background-color: transparent !important;
    }
    
    .accordion-content {
        max-height: none !important;
    }
    
    .accordion-icon {
        display: none;
    }
    
    .back-link,
    .back-link-inline {
        display: none;
    }
}

/* Intro Text */
.intro-text {
    background-color: var(--bg-secondary);
    border: 1px solid var(--divider);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.intro-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.intro-text em {
    font-style: italic;
}