/* Geometry Calculator Specific Styles */
.geometry-calculator {
    background-color: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 10px 20px var(--shadow-color);
    padding: 2rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.geometry-calculator h1 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 2.5rem;
}

.subtitle {
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Shape Selector */
.shape-selector {
    margin-bottom: 2rem;
}

.shape-categories {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.category-btn {
    padding: 0.75rem 2rem;
    border: 2px solid var(--primary-color);
    background-color: transparent;
    color: var(--primary-color);
    border-radius: 2rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 1rem;
}

.category-btn.active,
.category-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

/* Shapes Grid */
.shapes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.shape-card {
    background-color: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.shape-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.shape-card.selected {
    border-color: var(--primary-color);
    background-color: rgba(139, 92, 246, 0.1);
}

.shape-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.shape-card h3 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.shape-card p {
    color: var(--text-color);
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Calculation Panel */
.calculation-panel {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.panel-header h2 {
    color: var(--text-color);
    margin: 0;
    font-size: 1.8rem;
}

.back-btn {
    padding: 0.5rem 1rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background-color: var(--primary-color);
    transform: translateX(-2px);
}

/* Shape Diagram */
.shape-diagram {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagram-svg {
    max-width: 100%;
    max-height: 180px;
}

/* Input Section */
.input-section {
    margin-bottom: 2rem;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.input-group input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

.calculate-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.calculate-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

/* Results Section */
.results-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.results-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.result-item {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
}

.result-label {
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.result-value {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.result-unit {
    color: var(--text-color);
    font-size: 0.8rem;
    opacity: 0.6;
    margin-top: 0.25rem;
}

/* Formulas Section */
.formulas-section {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.formulas-section h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.formula-item {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 0.5rem;
    font-family: 'Courier New', monospace;
}

.formula-name {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.formula-expression {
    color: var(--text-color);
    font-size: 1.1rem;
}

/* Unit Converter */
.unit-converter {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.unit-converter h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    text-align: center;
}

.converter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.converter-item {
    display: flex;
    flex-direction: column;
}

.converter-item label {
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.converter-item select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
}

.converter-item select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Error States */
.input-error {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2) !important;
}

.error-message {
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .geometry-calculator {
        padding: 1rem;
    }

    .geometry-calculator h1 {
        font-size: 2rem;
    }

    .shapes-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 1rem;
    }

    .shape-card {
        padding: 1rem;
    }

    .shape-icon {
        font-size: 2.5rem;
    }

    .calculation-panel {
        padding: 1rem;
    }

    .panel-header {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .input-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .converter-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .shape-categories {
        flex-direction: column;
        align-items: center;
    }

    .category-btn {
        width: 200px;
    }

    .shapes-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .shape-card {
        padding: 0.75rem;
    }

    .shape-icon {
        font-size: 2rem;
    }

    .shape-card h3 {
        font-size: 1rem;
    }

    .shape-card p {
        font-size: 0.8rem;
    }
}

/* Animation for shape transitions */
.shape-card {
    animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus states for accessibility */
.shape-card:focus,
.category-btn:focus,
.calculate-btn:focus,
.back-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .shape-card {
        border-width: 3px;
    }
    
    .shape-card:hover {
        border-width: 3px;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .shape-card,
    .category-btn,
    .calculate-btn,
    .back-btn {
        transition: none;
    }
    
    .shape-card:hover {
        transform: none;
    }
    
    .category-btn:hover,
    .calculate-btn:hover {
        transform: none;
    }
}