/* Calculadora de Vendas - Main Styles */

/* 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, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Container and layout */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 50px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
}

h1 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 2.5em;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    color: #5a6c7d;
    font-size: 1.2em;
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
}

/* Scenario cards layout */
.scenarios-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 35px;
    margin-bottom: 50px;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Individual scenario styling */
.scenario {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.scenario::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #3498db, #2ecc71, #e74c3c);
}

.scenario:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.scenario h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.4em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.scenario h2::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(45deg, #3498db, #2ecc71);
}

.scenario p {
    color: #6c757d;
    margin-bottom: 25px;
    font-size: 1em;
    line-height: 1.5;
}

/* Form styling */
.form-group {
    margin-bottom: 20px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
    font-size: 0.95em;
    position: relative;
}

label::after {
    content: '*';
    color: #e74c3c;
    margin-left: 4px;
    font-weight: bold;
}

input[type="number"] {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    font-family: inherit;
}

input[type="number"]:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    background: rgba(255, 255, 255, 1);
}

input[type="number"]:hover {
    border-color: #bdc3c7;
}

.help-text {
    display: block;
    margin-top: 6px;
    font-size: 0.85em;
    color: #6c757d;
    font-style: italic;
}

/* Button styling */
.calculate-btn {
    width: 100%;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.calculate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.calculate-btn:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
}

.calculate-btn:hover::before {
    left: 100%;
}

.calculate-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.2);
}

.calculate-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.calculate-btn:disabled::before {
    display: none;
}

/* Result display */
.result {
    margin-top: 25px;
    padding: 20px;
    border-radius: 12px;
    font-weight: 500;
    text-align: center;
    display: none;
    position: relative;
    animation: slideIn 0.3s ease-out;
    border-left: 5px solid transparent;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result.success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border: 1px solid #c3e6cb;
    border-left-color: #28a745;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2);
}

.result.success::before {
    content: '✓';
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
    font-weight: bold;
    color: #28a745;
}

.result.error {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border: 1px solid #f5c6cb;
    border-left-color: #dc3545;
    box-shadow: 0 4px 15px rgba(220, 53, 69, 0.2);
}

.result.error::before {
    content: '⚠';
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2em;
    font-weight: bold;
    color: #dc3545;
}

.result.success .result-value {
    font-size: 1.3em;
    font-weight: 700;
    color: #155724;
    margin: 10px 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.result.error .error-message {
    font-size: 1em;
    font-weight: 600;
    margin: 5px 0;
}

/* Input validation states */
.form-group.error input[type="number"] {
    border-color: #dc3545;
    background-color: rgba(220, 53, 69, 0.05);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-group.error label {
    color: #dc3545;
}

.form-group.success input[type="number"] {
    border-color: #28a745;
    background-color: rgba(40, 167, 69, 0.05);
}

.form-group.success label {
    color: #28a745;
}

/* Error message styling */
.error-message {
    display: block;
    margin-top: 6px;
    font-size: 0.85em;
    color: #dc3545;
    font-weight: 500;
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s ease;
}

.form-group.error .error-message {
    opacity: 1;
    transform: translateY(0);
}

/* Loading state */
.calculate-btn.loading {
    background: #6c757d;
    cursor: wait;
    position: relative;
    pointer-events: none;
}

.calculate-btn.loading .loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

.calculate-btn:not(.loading) .loading-spinner {
    display: none;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Result loading state */
.result-loading-state {
    display: block !important;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border: 1px solid #dee2e6;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.result-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.result-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e9ecef;
    border-top-color: #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    color: #6c757d;
    font-size: 1em;
    font-weight: 500;
}

/* Navigation button styles */
.nav-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.95em;
}

.nav-button:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.3);
    color: white;
    text-decoration: none;
}

.nav-button.secondary {
    background: #f8f9fa;
    color: #2c3e50;
    border: 2px solid #dee2e6;
}

.nav-button.secondary:hover {
    background: #e9ecef;
    border-color: #adb5bd;
    color: #2c3e50;
}

.nav-button.coordinator-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: 2px solid transparent;
}

.nav-button.coordinator-btn:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

/* Enhanced focus indicators for better accessibility */
input[type="number"]:focus-visible {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

.calculate-btn:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 2px;
}

/* Keyboard navigation support */
body.keyboard-navigation *:focus {
    outline: 3px solid #ffc107 !important;
    outline-offset: 2px !important;
}

/* Skip link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Better focus management for forms */
.form-group:focus-within label {
    color: #3498db;
    font-weight: 700;
}

/* Enhanced error state visibility */
.form-group.error input[type="number"]:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.25);
}

/* Success state visibility */
.form-group.success input[type="number"]:focus {
    border-color: #28a745;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.25);
}

/* Required field indicators */
.form-group.required label::after {
    content: '*';
    color: #e74c3c;
    margin-left: 4px;
    font-weight: bold;
}

/* Hover effects for interactive elements */
.form-group:hover label {
    color: #2c3e50;
    transition: color 0.2s ease;
}

input[type="number"]:hover:not(:focus) {
    border-color: #95a5a6;
    transition: border-color 0.2s ease;
}

/* Success animation */
@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.result.success {
    animation: slideIn 0.3s ease-out, successPulse 0.6s ease-in-out 0.3s;
}

/* Error shake animation */
@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.result.error {
    animation: slideIn 0.3s ease-out, errorShake 0.5s ease-in-out 0.3s;
}

/* Visual feedback for form submission */
.scenario.submitting {
    opacity: 0.7;
    pointer-events: none;
}

.scenario.submitting .calculate-btn {
    background: #6c757d;
    cursor: wait;
}

/* High DPI / Retina display support */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Ensure crisp rendering on high-DPI displays */
    * {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Reduced motion support for accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .scenario {
        border: 2px solid;
    }
    
    .calculate-btn {
        border: 2px solid;
    }
    
    input[type="number"]:focus {
        border-width: 3px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    }
    
    .scenario, header {
        background: rgba(44, 62, 80, 0.95);
        color: #ecf0f1;
    }
    
    .scenario h2, h1 {
        color: #ecf0f1;
    }
    
    label {
        color: #bdc3c7;
    }
    
    input[type="number"] {
        background: rgba(52, 73, 94, 0.9);
        color: #ecf0f1;
        border-color: #7f8c8d;
    }
    
    input[type="number"]:focus {
        border-color: #3498db;
        background: rgba(52, 73, 94, 1);
    }
}

/* Responsive design */
@media (max-width: 1024px) {
    .scenarios-container {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header {
        padding: 25px 20px;
        margin-bottom: 35px;
    }
    
    h1 {
        font-size: 2.2em;
    }
    
    .subtitle {
        font-size: 1.1em;
    }
    
    .scenarios-container {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .scenario {
        padding: 25px 20px;
    }
    
    .scenario h2 {
        font-size: 1.3em;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 20px 15px;
        margin-bottom: 25px;
    }
    
    h1 {
        font-size: 1.9em;
    }
    
    .subtitle {
        font-size: 1em;
    }
    
    .scenarios-container {
        gap: 20px;
        grid-template-columns: 1fr;
    }
    
    .scenario {
        padding: 20px 15px;
    }
    
    .scenario h2 {
        font-size: 1.2em;
    }
    
    input[type="number"], .calculate-btn {
        font-size: 15px;
        padding: 12px 14px;
    }
    
    .calculate-btn {
        padding: 14px 20px;
        font-size: 14px;
    }
}

@media (max-width: 360px) {
    .scenarios-container {
        grid-template-columns: 1fr;
    }
    
    .scenario {
        margin: 0 -5px;
    }
    
    input[type="number"], .calculate-btn {
        font-size: 14px;
    }
}