/* ===== CALCULATOR SYSTEM - MASTER CSS FILE ===== */
/* This file contains ALL styles for all calculators */

/* ===== RESET & BASE STYLES ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #FFFFEE;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    line-height: 1.6;
}

h1 {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

h2 {
    color: #ff0000;
}

h2 {
    color: #ff0000;
}

h4 {
    color: #ff0000;
}

/* ===== SHARED CALCULATOR ENGINE CSS (Base Styles) ===== */
:root {
    /* Default Theme Variables (fallback) */
    --calc-primary-color: #2196F3;
    --calc-secondary-color: #f5f5f5;
    --calc-text-color: #333;
    --calc-border-radius: 8px;
    --calc-spacing: 1rem;
    --calc-shadow: 0 2px 4px rgba(0,0,0,0.1);
    
    /* Material Theme Variables */
    --md-primary: #6750A4;
    --md-primary-light: #7C6AB0;
    --md-primary-dark: #4A3B7C;
    --md-secondary: #625B71;
    --md-surface: #FEF7FF;
    --md-surface-variant: #F3EDF7;
    --md-outline: #CAC4D0;
}

.calculator-container {
    max-width: 800px;
    margin: 2rem auto;
}

/* Base Calculator Styles (applies to all calculators) */
.calculator {
    background: white;
    border-radius: var(--calc-border-radius);
    box-shadow: var(--calc-shadow);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.calculator:hover {
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.calculator-header {
    background: var(--calc-primary-color);
    color: white;
    padding: var(--calc-spacing);
}

.calculator-header h2 {
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
}

.calculator-description {
    margin: 0;
    opacity: 0.9;
    font-size: 0.9rem;
}

.calculator-body {
    padding: var(--calc-spacing);
}

/* Input Groups */
.input-group {
    margin-bottom: calc(var(--calc-spacing) * 1.5);
    border: 1px solid #e0e0e0;
    border-radius: var(--calc-border-radius);
    padding: var(--calc-spacing);
    transition: all 0.3s ease;
}

.input-group-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--calc-text-color);
}

.input-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

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

.input-field label {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    color: #666;
}

.calc-input {
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
}

.calc-input:focus {
    outline: none;
    border-color: var(--calc-primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* Buttons */
.calculator-actions {
    display: flex;
    gap: 1rem;
    margin: var(--calc-spacing) 0;
}

.calc-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1;
}

.calc-button-primary {
    background: var(--calc-primary-color);
    color: white;
}

.calc-button-primary:hover {
    background: #1976D2;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.calc-button-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.calc-button-secondary {
    background: var(--calc-secondary-color);
    color: var(--calc-text-color);
}

.calc-button-secondary:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Results Section */
.calculator-results {
    background: var(--calc-secondary-color);
    border-radius: var(--calc-border-radius);
    padding: var(--calc-spacing);
    margin-top: var(--calc-spacing);
}

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

.result-field {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.result-field:hover {
    transform: scale(1.02);
}

.result-field label {
    font-weight: 600;
    color: #666;
    min-width: 60px;
}

.result-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--calc-primary-color);
    transition: all 0.3s ease;
}

.result-unit {
    color: #666;
    font-size: 0.9rem;
}

/* ===== MATERIAL THEME ===== */
.calculator.theme-material {
    background: var(--md-surface);
    border-radius: 28px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
    border: 1px solid var(--md-outline);
}

.calculator.theme-material .calculator-header {
    background: linear-gradient(135deg, var(--md-primary), var(--md-primary-light));
    padding: 28px 28px 24px 28px;
    position: relative;
    overflow: hidden;
}

.calculator.theme-material .calculator-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    pointer-events: none;
}

.calculator.theme-material .calculator-header::after {
    content: '';
    position: absolute;
    bottom: -80%;
    left: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    pointer-events: none;
}

.calculator.theme-material .calculator-header h2 {
    color: white;
    font-size: 2rem;
    font-weight: 500;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.calculator.theme-material .calculator-description {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1rem;
    position: relative;
}

.calculator.theme-material .calculator-body {
    padding: 28px;
    background: var(--md-surface);
}

.calculator.theme-material .input-group {
    background: var(--md-surface-variant);
    border: 2px solid transparent;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.calculator.theme-material .input-group:hover {
    border-color: var(--md-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(103, 80, 164, 0.15);
}

.calculator.theme-material .input-group-label {
    color: var(--md-primary-dark);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.calculator.theme-material .input-field label {
    color: var(--md-primary-dark);
    font-weight: 500;
    margin-bottom: 8px;
}

.calculator.theme-material .calc-input {
    background: white;
    border: 2px solid var(--md-outline);
    border-radius: 12px 12px 4px 4px;
    border-bottom-width: 3px;
    padding: 14px 12px;
    font-size: 1.1rem;
}

.calculator.theme-material .calc-input:hover {
    border-color: var(--md-primary);
    background: #FAF9FF;
}

.calculator.theme-material .calc-input:focus {
    outline: none;
    border-color: var(--md-primary);
    border-bottom-color: var(--md-primary-dark);
    background: white;
    box-shadow: 0 4px 8px rgba(103, 80, 164, 0.1);
}

.calculator.theme-material .calc-button-primary {
    background: var(--md-primary);
    color: white;
    border-radius: 40px;
    padding: 16px 24px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 8px rgba(103, 80, 164, 0.3);
}

.calculator.theme-material .calc-button-primary:hover {
    background: var(--md-primary-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(103, 80, 164, 0.4);
}

.calculator.theme-material .calc-button-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(103, 80, 164, 0.3);
}

.calculator.theme-material .calc-button-secondary {
    background: var(--md-surface-variant);
    color: var(--md-primary-dark);
    border-radius: 40px;
    padding: 16px 24px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 2px solid var(--md-outline);
}

.calculator.theme-material .calc-button-secondary:hover {
    background: #E8DEF8;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.calculator.theme-material .calculator-results {
    background: linear-gradient(135deg, #F3EDF7, #EADDFF);
    border-radius: 20px;
    padding: 28px;
    margin-top: 28px;
    border: 2px solid var(--md-primary-light);
}

.calculator.theme-material .result-field {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(103, 80, 164, 0.15);
}

.calculator.theme-material .result-field label {
    color: var(--md-primary-dark);
}

.calculator.theme-material .result-value {
    color: var(--md-primary);
    font-size: 1.8rem;
    text-shadow: 2px 2px 4px rgba(103, 80, 164, 0.2);
}

.calculator.theme-material .result-unit {
    color: var(--md-primary-dark);
    font-weight: 500;
    font-size: 1.1rem;
}

/* ===== NEUMORPHIC THEME (Example of another theme) ===== */
.calculator.theme-neumorphic {
    --neu-primary: #e0e0e0;
    --neu-shadow-dark: #bebebe;
    --neu-shadow-light: #ffffff;
    
    background: var(--neu-primary);
    border-radius: 50px;
    box-shadow: 20px 20px 60px var(--neu-shadow-dark),
                -20px -20px 60px var(--neu-shadow-light);
}

.calculator.theme-neumorphic .calculator-header {
    background: var(--neu-primary);
    color: #333;
    box-shadow: inset 5px 5px 10px var(--neu-shadow-dark),
                inset -5px -5px 10px var(--neu-shadow-light);
    border-radius: 50px 50px 0 0;
}

.calculator.theme-neumorphic .calc-input {
    background: var(--neu-primary);
    border: none;
    box-shadow: inset 3px 3px 7px var(--neu-shadow-dark),
                inset -3px -3px 7px var(--neu-shadow-light);
    border-radius: 30px;
}

.calculator.theme-neumorphic .calc-button {
    background: var(--neu-primary);
    border: none;
    box-shadow: 5px 5px 10px var(--neu-shadow-dark),
                -5px -5px 10px var(--neu-shadow-light);
    border-radius: 40px;
}

.calculator.theme-neumorphic .calc-button:hover {
    box-shadow: 3px 3px 7px var(--neu-shadow-dark),
                -3px -3px 7px var(--neu-shadow-light);
}

/* ===== DARK THEME (Another example) ===== */
.calculator.theme-dark {
    --dark-bg: #1a1a1a;
    --dark-surface: #2d2d2d;
    --dark-primary: #bb86fc;
    --dark-text: #ffffff;
    
    background: var(--dark-bg);
    color: var(--dark-text);
    border-radius: 16px;
    border: 1px solid #404040;
}

.calculator.theme-dark .calculator-header {
    background: linear-gradient(135deg, #2d2d2d, #1a1a1a);
    border-bottom: 2px solid var(--dark-primary);
}

.calculator.theme-dark .calc-input {
    background: var(--dark-surface);
    border-color: #404040;
    color: var(--dark-text);
}

.calculator.theme-dark .calc-button-primary {
    background: var(--dark-primary);
    color: #000;
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.value-updated {
    animation: pulse 0.3s ease;
    background: var(--md-primary-light) !important;
    color: white !important;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .calculator-container {
        margin: 1rem;
    }
    
    .input-row {
        grid-template-columns: 1fr;
    }
    
    .calculator-actions {
        flex-direction: column;
    }
    
    .result-row {
        grid-template-columns: 1fr;
    }
    
    .calculator.theme-material .calculator-header h2 {
        font-size: 1.5rem;
    }
    
    .calculator.theme-material .calculator-body {
        padding: 16px;
    }
    
    .calculator.theme-material .input-group {
        padding: 16px;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.hidden { display: none; }