/**
 * Modulation Depth Calculator Styles
 * Namespace: modulation-calculator
 */

/* CSS Variables - Reference homepage colors */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent-color: #7c3aed;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --black: #000000;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 3rem;
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Main Calculator Container */
.modulation-calculator {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--gray-50);
    min-height: 100vh;
}

/* Calculator Header */
.modulation-calculator .calculator-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    background: var(--white);
    padding: var(--spacing-3xl);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.modulation-calculator .calculator-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--warning-color), var(--accent-color));
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-xl);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
}

.modulation-calculator .calculator-icon svg {
    width: 50px;
    height: 50px;
    fill: var(--white);
}

.modulation-calculator .calculator-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.modulation-calculator .calculator-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* Calculator Main Layout */
.modulation-calculator .calculator-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

/* Input Section */
.modulation-calculator .input-section {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
}

.modulation-calculator .section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.modulation-calculator .section-title i {
    color: var(--warning-color);
    font-size: 1.25rem;
}

/* Form Styles */
.modulation-calculator .form-group {
    margin-bottom: var(--spacing-xl);
}

.modulation-calculator .form-label {
    display: block;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.modulation-calculator .form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    background: var(--white);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.modulation-calculator .form-input:focus {
    outline: none;
    border-color: var(--warning-color);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.modulation-calculator .form-select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
}

.modulation-calculator .form-select:focus {
    outline: none;
    border-color: var(--warning-color);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.modulation-calculator .form-select:hover {
    border-color: var(--gray-400);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.modulation-calculator .help-text {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-top: var(--spacing-sm);
    line-height: 1.5;
    font-weight: 500;
    background: var(--gray-50);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--warning-color);
}

/* Button Styles */
.modulation-calculator .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.modulation-calculator .btn-primary {
    background: linear-gradient(135deg, var(--warning-color), var(--accent-color));
    color: var(--white);
}

.modulation-calculator .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
}

.modulation-calculator .btn-lg {
    padding: var(--spacing-xl) var(--spacing-3xl);
    font-size: 1.125rem;
}

/* Results Section */
.modulation-calculator .results-section {
    background: linear-gradient(135deg, var(--gray-50), var(--white));
    border: 2px solid var(--gray-200);
    border-radius: 20px;
    padding: var(--spacing-2xl);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.modulation-calculator .modulation-visual {
    width: 100%;
    margin: var(--spacing-xl) 0;
    text-align: center;
}

.modulation-calculator .waveform-display {
    background: var(--gray-100);
    border-radius: 16px;
    padding: var(--spacing-xl);
    border: 3px solid var(--gray-300);
    position: relative;
}

.modulation-calculator .waveform-container {
    width: 100%;
    height: 150px;
    background: var(--white);
    border-radius: 12px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--gray-200);
}

.modulation-calculator #modulationCanvas {
    max-width: 100%;
    height: auto;
}

.modulation-calculator .modulation-info {
    text-align: center;
}

.modulation-calculator .mod-depth-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--warning-color);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.modulation-calculator .mod-depth-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modulation-calculator .results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.modulation-calculator .result-item {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    border: 2px solid var(--gray-200);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.modulation-calculator .result-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--warning-color), var(--accent-color));
}

.modulation-calculator .result-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--warning-color);
}

.modulation-calculator .result-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modulation-calculator .result-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--warning-color);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 4px rgba(245, 158, 11, 0.1);
}

.modulation-calculator .result-unit {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
}

.modulation-calculator .copy-btn {
    background: linear-gradient(135deg, var(--gray-600), var(--gray-700));
    color: var(--white);
    border: none;
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.modulation-calculator .copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(75, 85, 99, 0.3);
}

/* Modulation Analysis */
.modulation-calculator .modulation-analysis {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
}

.modulation-calculator .analysis-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.modulation-calculator .analysis-item {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--warning-color);
}

.modulation-calculator .analysis-label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 1rem;
}

.modulation-calculator .analysis-value {
    font-weight: 700;
    color: var(--warning-color);
    font-size: 1.125rem;
    text-align: right;
}

/* Responsive Design */
@media (max-width: 768px) {
    .modulation-calculator .calculator-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .modulation-calculator .results-grid {
        grid-template-columns: 1fr;
    }
    
    .modulation-calculator .analysis-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .modulation-calculator .analysis-value {
        text-align: center;
    }
    
    .modulation-calculator .calculator-header h1 {
        font-size: 2rem;
    }
    
    .modulation-calculator .calculator-header p {
        font-size: 1rem;
    }
    
    .modulation-calculator .waveform-container {
        height: 120px;
    }
}