/**
 * Google Ads Cost Calculator - Styles
 * Mobile-first responsive design
 */

/* Reset and Base Styles */
.google-ads-calculator-wrapper {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 20px auto;
    max-width: 100%;
}

.google-ads-calculator {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    padding: 20px;
    margin: 0 auto;
    max-width: 900px;
}

/* Typography */
.calculator-title {
    font-size: 24px;
    font-weight: 700;
    color: #1a202c;
    margin: 0 0 20px 0;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 3px solid #4285f4;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
    margin: 0 0 15px 0;
    padding-left: 10px;
    border-left: 4px solid #4285f4;
}

/* Form Sections */
.calculator-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #f7fafc;
    border-radius: 8px;
}

.calculator-form {
    margin-bottom: 30px;
}

/* Input Groups */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: #2d3748;
    margin-bottom: 8px;
}

.tooltip {
    display: inline-block;
    width: 18px;
    height: 18px;
    background: #4285f4;
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 12px;
    cursor: help;
    margin-left: 5px;
    line-height: 18px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 12px;
    font-weight: 600;
    color: #4a5568;
    pointer-events: none;
}

.input-group input[type="number"] {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    background: #ffffff;
    color: #2d3748;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.input-wrapper input[type="number"] {
    padding-left: 30px;
}

.input-group input[type="number"]:focus {
    outline: none;
    border-color: #4285f4;
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
}

.input-group input[type="number"]::placeholder {
    color: #a0aec0;
}

/* Buttons */
.calculate-button,
.reset-button {
    width: 100%;
    padding: 15px 30px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calculate-button {
    background: linear-gradient(135deg, #4285f4 0%, #0f62fe 100%);
    color: white;
    box-shadow: 0 4px 6px rgba(66, 133, 244, 0.3);
}

.calculate-button:hover {
    background: linear-gradient(135deg, #357ae8 0%, #0353e9 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(66, 133, 244, 0.4);
}

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

.reset-button {
    background: #e2e8f0;
    color: #2d3748;
    margin-top: 20px;
}

.reset-button:hover {
    background: #cbd5e0;
}

/* Results Section */
.results-section {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    color: white;
    animation: slideIn 0.5s ease;
}

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

.results-section .section-title {
    color: white;
    border-left-color: white;
    margin-bottom: 25px;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.result-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.result-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.result-label {
    font-size: 13px;
    font-weight: 600;
    color: #4a5568;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.result-value {
    font-size: 28px;
    font-weight: 700;
    color: #1a202c;
    margin-bottom: 5px;
}

.result-formula {
    font-size: 12px;
    color: #718096;
    font-style: italic;
}

/* Summary Section */
.summary-section {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.summary-section h4 {
    color: #1a202c;
    font-size: 18px;
    margin: 0 0 15px 0;
}

.summary-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.summary-section li {
    padding: 8px 0;
    color: #2d3748;
    border-bottom: 1px solid #e2e8f0;
}

.summary-section li:last-child {
    border-bottom: none;
}

.summary-section strong {
    color: #4285f4;
    font-weight: 600;
}

/* Tablet Styles */
@media (min-width: 768px) {
    .google-ads-calculator {
        padding: 35px;
    }
    
    .calculator-title {
        font-size: 32px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .calculator-section {
        padding: 25px;
    }
}

/* Desktop Styles */
@media (min-width: 1024px) {
    .google-ads-calculator {
        padding: 40px;
    }
    
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .calculate-button,
    .reset-button {
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
        display: block;
    }
}

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

.calculate-button.loading::after {
    content: "";
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 10px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spinner 0.6s linear infinite;
}

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

/* Error States */
.input-group input[type="number"]:invalid {
    border-color: #fc8181;
}

.error-message {
    color: #f56565;
    font-size: 13px;
    margin-top: 5px;
    display: none;
}

/* Accessibility */
.input-group input[type="number"]:focus-visible {
    outline: 3px solid #4285f4;
    outline-offset: 2px;
}

.calculate-button:focus-visible,
.reset-button:focus-visible {
    outline: 3px solid #ffffff;
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .calculator-form,
    .calculate-button,
    .reset-button {
        display: none;
    }
    
    .results-section {
        background: white;
        color: black;
        box-shadow: none;
    }
    
    .result-card {
        break-inside: avoid;
    }
}

/* Dark Theme Support (Optional) */
@media (prefers-color-scheme: dark) {
    .google-ads-calculator-wrapper[data-theme="auto"] .google-ads-calculator {
        background: #1a202c;
        color: #e2e8f0;
    }
    
    .google-ads-calculator-wrapper[data-theme="auto"] .calculator-title,
    .google-ads-calculator-wrapper[data-theme="auto"] .section-title {
        color: #e2e8f0;
    }
    
    .google-ads-calculator-wrapper[data-theme="auto"] .calculator-section {
        background: #2d3748;
    }
    
    .google-ads-calculator-wrapper[data-theme="auto"] input[type="number"] {
        background: #4a5568;
        color: #e2e8f0;
        border-color: #4a5568;
    }
}