/**
 * Profit Margin Calculator Styles
 * Theme: Woodworking Brown (#8B4513)
 * Single Page Application Design
 */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #F5F5DC 0%, #FFFFFF 100%);
    min-height: 100vh;
}

/* CSS Variables */
:root {
    --primary-color: #8B4513;
    --primary-dark: #654321;
    --primary-light: #DEB887;
    --secondary-color: #CD853F;
    --success-color: #228B22;
    --warning-color: #FF8C00;
    --danger-color: #DC143C;
    --info-color: #4682B4;
    --light-bg: #F5F5DC;
    --border-color: #DEB887;
    --text-muted: #6B7280;
    --shadow: 0 2px 10px rgba(139, 69, 19, 0.1);
    --shadow-hover: 0 4px 20px rgba(139, 69, 19, 0.15);
    --border-radius: 8px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-base: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-base);
}

/* Ensure all content sections have consistent width */
.main-content .container,
.calculator-header,
.calculator-interface,
.educational-content,
.faq-section,
.related-tools {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl) 0 var(--spacing-2xl) 0;
}

/* Calculator Header */
.calculator-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.calculator-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    flex-shrink: 0;
}

.calculator-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.calculator-description {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: var(--spacing-base);
}

.calculator-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.feature-tag {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Safety Warning */
.safety-warning {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-base);
    background: linear-gradient(135deg, #FFF8DC, #F0E68C);
    border: 2px solid var(--warning-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.warning-icon {
    width: 48px;
    height: 48px;
    background: var(--warning-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-content h3 {
    color: #B8860B;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.warning-content p {
    color: #B8860B;
    line-height: 1.6;
}

/* Calculator Interface */
.calculator-interface {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 600px;
}

/* Input Section */
.input-section {
    padding: var(--spacing-xl);
    background: #FAFAFA;
    border-right: 1px solid var(--border-color);
}

.input-section h2 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.input-group {
    margin-bottom: var(--spacing-xl);
}

.input-group h3 {
    color: var(--primary-dark);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-base);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-light);
}

/* Business Type Grid - Balanced 2x3 Layout */
.business-type-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-base);
}

.business-type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-base);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-muted);
}

.business-type-btn:hover {
    border-color: var(--primary-color);
    background: var(--light-bg);
    transform: translateY(-1px);
}

.business-type-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.business-type-btn i {
    font-size: 1.5rem;
}

/* Dynamic Item Lists */
.item-container {
    margin-bottom: var(--spacing-base);
}

.item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-base);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.item-title {
    font-weight: 600;
    color: var(--primary-dark);
}

.remove-item-btn {
    background: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.75rem;
}

.item-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.add-item-btn {
    width: 100%;
    background: var(--success-color);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.add-item-btn:hover {
    background: #1e7e1e;
    transform: translateY(-1px);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-base);
}

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

.form-group label {
    font-weight: 600;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.form-control {
    padding: var(--spacing-sm) var(--spacing-base);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

/* Input with Unit */
.input-with-unit {
    display: flex;
    align-items: center;
    position: relative;
}

.input-with-unit .form-control {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
}

.unit-display {
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-left: none;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    background: var(--light-bg);
    font-size: var(--font-size-sm);
    min-width: 50px;
    text-align: center;
    color: var(--primary-dark);
    font-weight: 600;
}

/* Calculate Button */
.calculate-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: var(--spacing-base) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.calculate-btn:active {
    transform: translateY(0);
}

/* Results Section */
.results-section {
    padding: var(--spacing-xl);
    background: white;
}

.results-section h2 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.results-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--text-muted);
}

.results-placeholder i {
    font-size: 4rem;
    color: var(--primary-light);
    margin-bottom: var(--spacing-lg);
}

.results-placeholder p {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    max-width: 400px;
}

/* Results Display - Balanced 2-Column Layout */
.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 100%;
}

/* Ensure consistent two-column layout for results */
@media (min-width: 769px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Single column on mobile */
@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-base);
    }
}

.result-card {
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    text-align: center;
    min-width: 0;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.result-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.result-card h3 {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.result-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.result-unit {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 400;
}

.result-description {
    color: var(--text-muted);
    line-height: 1.5;
    font-size: var(--font-size-sm);
}

/* Profit Status Indicator */
.profit-status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-top: var(--spacing-sm);
}

.profit-status.excellent {
    background: rgba(34, 139, 34, 0.1);
    color: var(--success-color);
}

.profit-status.good {
    background: rgba(139, 69, 19, 0.1);
    color: var(--primary-color);
}

.profit-status.fair {
    background: rgba(255, 140, 0, 0.1);
    color: var(--warning-color);
}

.profit-status.poor {
    background: rgba(220, 20, 60, 0.1);
    color: var(--danger-color);
}

/* Profit Analysis */
.profit-analysis {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.analysis-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.analysis-item:last-child {
    border-bottom: none;
}

.analysis-label {
    font-weight: 600;
    color: var(--primary-dark);
}

.analysis-value {
    color: var(--text-muted);
    font-family: monospace;
}

/* Educational Content */
.educational-content {
    margin-top: var(--spacing-3xl);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.content-card {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.content-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-base);
}

.card-content h3 {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-content p {
    color: var(--text-muted);
    line-height: 1.6;
}

.educational-content h2 {
    text-align: center;
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* FAQ Section */
.faq-section {
    margin-top: var(--spacing-3xl);
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow);
}

.faq-section h2 {
    text-align: center;
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-base);
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--spacing-lg) 0;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    color: var(--primary-dark);
}

.faq-question i {
    transition: transform 0.3s ease;
    color: var(--primary-light);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: var(--spacing-lg);
}

.faq-answer p {
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Related Tools */
.related-tools {
    margin-top: var(--spacing-3xl);
}

.related-tools h2 {
    text-align: center;
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.calculator-card {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    border-left: 4px solid var(--primary-color);
    display: block;
}

.calculator-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    text-decoration: none;
    color: inherit;
}

.calculator-card .card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-base);
}

.calculator-card h3 {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.calculator-card p {
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* Footer */
.site-footer {
    background: var(--primary-dark);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin-bottom: var(--spacing-sm);
}

.footer-content .disclaimer {
    font-size: var(--font-size-sm);
    color: var(--primary-light);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .calculator-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-base);
    }

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

    .input-section {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .business-type-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .item-inputs {
        grid-template-columns: 1fr;
    }

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

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

    .calculator-features {
        justify-content: center;
    }

    .faq-question {
        font-size: var(--font-size-base);
    }

    .analysis-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .calculator-header {
        padding: var(--spacing-base);
    }

    .calculator-title {
        font-size: var(--font-size-2xl);
    }

    .input-section,
    .results-section {
        padding: var(--spacing-base);
    }

    .business-type-btn {
        padding: var(--spacing-sm);
        font-size: 0.75rem;
    }

    .business-type-btn i {
        font-size: 1.25rem;
    }

    .calculate-btn {
        font-size: var(--font-size-base);
        padding: var(--spacing-sm) var(--spacing-base);
    }

    .profit-analysis {
        padding: var(--spacing-base);
    }
}

/* Print Styles */
@media print {
    .calculator-interface,
    .educational-content,
    .faq-section,
    .related-tools,
    .site-footer {
        display: none;
    }

    .calculator-header {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    body {
        background: white;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000;
        --primary-dark: #000;
        --text-muted: #333;
        --border-color: #000;
    }

    .form-control {
        border-width: 2px;
    }

    .business-type-btn {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}