/**
 * Digital Net Plan Calculator - Frontend Styles
 * 
 * @package DigitalNetPlanCalculator
 * @version 1.0.0
 */

/* Variáveis CSS */
:root {
    --dnpc-primary: #1e3a8a;
    --dnpc-primary-light: #3b82f6;
    --dnpc-secondary: #fcd34d;
    --dnpc-success: #10b981;
    --dnpc-warning: #f59e0b;
    --dnpc-error: #ef4444;
    --dnpc-gray-50: #f9fafb;
    --dnpc-gray-100: #f3f4f6;
    --dnpc-gray-200: #e5e7eb;
    --dnpc-gray-300: #d1d5db;
    --dnpc-gray-400: #9ca3af;
    --dnpc-gray-500: #6b7280;
    --dnpc-gray-600: #4b5563;
    --dnpc-gray-700: #374151;
    --dnpc-gray-800: #1f2937;
    --dnpc-gray-900: #111827;
    --dnpc-white: #ffffff;
    
    --dnpc-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --dnpc-border-radius: 12px;
    --dnpc-border-radius-lg: 16px;
    --dnpc-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --dnpc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --dnpc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --dnpc-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --dnpc-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset e base */
.dnpc-calculator * {
    box-sizing: border-box;
}

.dnpc-calculator {
    font-family: var(--dnpc-font-family);
    max-width: 800px;
    margin: 0 auto;
    background: var(--dnpc-white);
    border-radius: var(--dnpc-border-radius-lg);
    box-shadow: var(--dnpc-shadow-lg);
    overflow: hidden;
    position: relative;
}

/* Header */
.dnpc-header {
    text-align: center;
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
}

.dnpc-title {
    margin: 0 0 0.5rem;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.dnpc-subtitle {
    margin: 0;
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Content */
.dnpc-content {
    padding: 2rem;
}

/* Form */
.dnpc-form {
    position: relative;
}

/* Steps */
.dnpc-step {
    display: none;
    animation: fadeInUp 0.5s ease-out;
}

.dnpc-step.active {
    display: block;
}

.dnpc-question {
    margin-bottom: 2rem;
}

.dnpc-question h3 {
    margin: 0 0 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dnpc-gray-900);
}

.dnpc-help {
    margin: 0 0 1.5rem;
    color: var(--dnpc-gray-600);
    font-size: 1rem;
}

/* Device Selector */
.dnpc-device-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dnpc-device-option {
    cursor: pointer;
    display: block;
}

.dnpc-device-option input[type="radio"] {
    display: none;
}

.dnpc-device-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    border: 2px solid var(--dnpc-gray-200);
    border-radius: var(--dnpc-border-radius);
    background: var(--dnpc-white);
    transition: var(--dnpc-transition);
    height: 100%;
}

.dnpc-device-card:hover {
    border-color: var(--dnpc-primary-light);
    box-shadow: var(--dnpc-shadow);
    transform: translateY(-2px);
}

.dnpc-device-option input[type="radio"]:checked + .dnpc-device-card {
    border-color: var(--dnpc-primary);
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    box-shadow: var(--dnpc-shadow-lg);
}

.dnpc-device-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.dnpc-device-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.dnpc-device-text strong {
    font-weight: 600;
    font-size: 1rem;
}

.dnpc-device-text span {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Custom Devices */
.dnpc-custom-devices {
    padding: 1.5rem;
    background: var(--dnpc-gray-50);
    border-radius: var(--dnpc-border-radius);
    border: 1px solid var(--dnpc-gray-200);
}

.dnpc-custom-devices label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dnpc-gray-700);
}

.dnpc-custom-devices input {
    width: 100%;
    max-width: 200px;
    padding: 0.75rem;
    border: 1px solid var(--dnpc-gray-300);
    border-radius: var(--dnpc-border-radius);
    font-size: 1rem;
    transition: var(--dnpc-transition);
}

.dnpc-custom-devices input:focus {
    outline: none;
    border-color: var(--dnpc-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Usage Selector */
.dnpc-usage-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.dnpc-usage-option {
    cursor: pointer;
    display: block;
}

.dnpc-usage-option input[type="radio"] {
    display: none;
}

.dnpc-usage-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    border: 2px solid var(--dnpc-gray-200);
    border-radius: var(--dnpc-border-radius);
    background: var(--dnpc-white);
    transition: var(--dnpc-transition);
    height: 100%;
}

.dnpc-usage-card:hover {
    border-color: var(--dnpc-primary-light);
    box-shadow: var(--dnpc-shadow);
    transform: translateY(-2px);
}

.dnpc-usage-option input[type="radio"]:checked + .dnpc-usage-card {
    border-color: var(--dnpc-primary);
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    box-shadow: var(--dnpc-shadow-lg);
}

.dnpc-usage-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.dnpc-usage-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.dnpc-usage-text strong {
    font-weight: 600;
    font-size: 1.1rem;
}

.dnpc-usage-text span {
    font-size: 0.9rem;
    opacity: 0.8;
}

.dnpc-usage-text small {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 0.25rem;
}

/* Budget Selector */
.dnpc-budget-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dnpc-budget-option {
    cursor: pointer;
    display: block;
}

.dnpc-budget-option input[type="radio"] {
    display: none;
}

.dnpc-budget-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.25rem;
    border: 2px solid var(--dnpc-gray-200);
    border-radius: var(--dnpc-border-radius);
    background: var(--dnpc-white);
    transition: var(--dnpc-transition);
    text-align: center;
}

.dnpc-budget-card:hover {
    border-color: var(--dnpc-primary-light);
    box-shadow: var(--dnpc-shadow);
    transform: translateY(-2px);
}

.dnpc-budget-option input[type="radio"]:checked + .dnpc-budget-card {
    border-color: var(--dnpc-primary);
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    box-shadow: var(--dnpc-shadow-lg);
}

.dnpc-budget-card strong {
    font-weight: 600;
    font-size: 1rem;
}

.dnpc-budget-card span {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Custom Budget */
.dnpc-custom-budget {
    padding: 1.5rem;
    background: var(--dnpc-gray-50);
    border-radius: var(--dnpc-border-radius);
    border: 1px solid var(--dnpc-gray-200);
}

.dnpc-custom-budget label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dnpc-gray-700);
}

.dnpc-input-group {
    display: flex;
    align-items: center;
    max-width: 200px;
}

.dnpc-input-prefix {
    padding: 0.75rem 1rem;
    background: var(--dnpc-gray-100);
    border: 1px solid var(--dnpc-gray-300);
    border-right: none;
    border-radius: var(--dnpc-border-radius) 0 0 var(--dnpc-border-radius);
    font-weight: 500;
    color: var(--dnpc-gray-700);
}

.dnpc-input-group input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--dnpc-gray-300);
    border-radius: 0 var(--dnpc-border-radius) var(--dnpc-border-radius) 0;
    font-size: 1rem;
    transition: var(--dnpc-transition);
}

.dnpc-input-group input:focus {
    outline: none;
    border-color: var(--dnpc-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Navigation */
.dnpc-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--dnpc-gray-200);
}

/* Buttons */
.dnpc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--dnpc-border-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--dnpc-transition);
    min-width: 120px;
}

.dnpc-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.dnpc-btn-next,
.dnpc-btn-calculate {
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    box-shadow: var(--dnpc-shadow);
}

.dnpc-btn-next:hover:not(:disabled),
.dnpc-btn-calculate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--dnpc-shadow-lg);
}

.dnpc-btn-prev {
    background: var(--dnpc-gray-100);
    color: var(--dnpc-gray-700);
    border: 1px solid var(--dnpc-gray-300);
}

.dnpc-btn-prev:hover {
    background: var(--dnpc-gray-200);
    transform: translateY(-1px);
}

.dnpc-btn-primary {
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    box-shadow: var(--dnpc-shadow);
}

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

.dnpc-btn-secondary {
    background: var(--dnpc-white);
    color: var(--dnpc-primary);
    border: 2px solid var(--dnpc-primary);
}

.dnpc-btn-secondary:hover {
    background: var(--dnpc-primary);
    color: var(--dnpc-white);
    transform: translateY(-1px);
}

.dnpc-btn-outline {
    background: transparent;
    color: var(--dnpc-primary);
    border: 1px solid var(--dnpc-primary);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.dnpc-btn-outline:hover {
    background: var(--dnpc-primary);
    color: var(--dnpc-white);
}

.dnpc-btn-reset {
    background: var(--dnpc-gray-100);
    color: var(--dnpc-gray-700);
    border: 1px solid var(--dnpc-gray-300);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.dnpc-btn-reset:hover {
    background: var(--dnpc-gray-200);
}

/* Progress */
.dnpc-progress {
    padding: 1.5rem 2rem;
    background: var(--dnpc-gray-50);
    border-top: 1px solid var(--dnpc-gray-200);
}

.dnpc-progress-bar {
    width: 100%;
    height: 6px;
    background: var(--dnpc-gray-200);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.dnpc-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    border-radius: 3px;
    transition: width 0.5s ease;
    width: 33.33%;
}

.dnpc-progress-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dnpc-progress-step {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--dnpc-gray-300);
    color: var(--dnpc-white);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--dnpc-transition);
}

.dnpc-progress-step.active {
    background: var(--dnpc-primary);
}

.dnpc-progress-step.completed {
    background: var(--dnpc-success);
}

/* Result */
.dnpc-result {
    animation: fadeInUp 0.5s ease-out;
}

.dnpc-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--dnpc-gray-200);
}

.dnpc-result-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dnpc-gray-900);
}

/* Recommended Plan */
.dnpc-recommended-plan {
    background: linear-gradient(135deg, var(--dnpc-primary) 0%, var(--dnpc-primary-light) 100%);
    color: var(--dnpc-white);
    border-radius: var(--dnpc-border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.dnpc-plan-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--dnpc-secondary);
    color: var(--dnpc-gray-900);
    padding: 0.5rem 1rem;
    border-radius: var(--dnpc-border-radius);
    font-size: 0.875rem;
    font-weight: 600;
}

.dnpc-plan-header {
    text-align: center;
    margin-bottom: 2rem;
}

.dnpc-plan-name {
    margin: 0 0 0.5rem;
    font-size: 2rem;
    font-weight: 700;
}

.dnpc-plan-speed {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.dnpc-plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.dnpc-currency {
    font-size: 1.25rem;
    opacity: 0.8;
}

.dnpc-amount {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.dnpc-period {
    font-size: 1.25rem;
    opacity: 0.8;
}

.dnpc-plan-features {
    margin-bottom: 2rem;
}

.dnpc-plan-features h5 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.dnpc-plan-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
}

.dnpc-plan-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dnpc-plan-features li::before {
    content: '✓';
    color: var(--dnpc-secondary);
    font-weight: bold;
}

.dnpc-recommendation-reason {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--dnpc-border-radius);
    margin-bottom: 2rem;
}

.dnpc-recommendation-reason h5 {
    margin: 0 0 0.5rem;
    font-size: 1rem;
    font-weight: 600;
}

.dnpc-recommendation-reason p {
    margin: 0;
    opacity: 0.9;
    line-height: 1.5;
}

.dnpc-savings {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--dnpc-success);
    padding: 1rem;
    border-radius: var(--dnpc-border-radius);
    margin-bottom: 2rem;
    font-weight: 600;
}

.dnpc-savings-icon {
    font-size: 1.25rem;
}

.dnpc-plan-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Alternatives */
.dnpc-alternatives {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--dnpc-gray-200);
}

.dnpc-alternatives h4 {
    margin: 0 0 1.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dnpc-gray-900);
}

.dnpc-alternatives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.dnpc-alternative-plan {
    background: var(--dnpc-white);
    border: 1px solid var(--dnpc-gray-200);
    border-radius: var(--dnpc-border-radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--dnpc-transition);
}

.dnpc-alternative-plan:hover {
    box-shadow: var(--dnpc-shadow);
    transform: translateY(-2px);
}

.dnpc-alternative-plan h5 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dnpc-gray-900);
}

.dnpc-alt-speed {
    color: var(--dnpc-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.dnpc-alt-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dnpc-gray-900);
    margin-bottom: 1rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.dnpc-btn-loading {
    animation: pulse 1.5s infinite;
}

/* Responsive */
@media (max-width: 768px) {
    .dnpc-calculator {
        margin: 1rem;
        border-radius: var(--dnpc-border-radius);
    }
    
    .dnpc-header {
        padding: 1.5rem 1.5rem 1rem;
    }
    
    .dnpc-title {
        font-size: 1.75rem;
    }
    
    .dnpc-subtitle {
        font-size: 1rem;
    }
    
    .dnpc-content {
        padding: 1.5rem;
    }
    
    .dnpc-device-options {
        grid-template-columns: 1fr;
    }
    
    .dnpc-usage-selector {
        grid-template-columns: 1fr;
    }
    
    .dnpc-budget-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dnpc-navigation {
        flex-direction: column;
        gap: 1rem;
    }
    
    .dnpc-navigation .dnpc-btn {
        width: 100%;
    }
    
    .dnpc-result-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .dnpc-plan-actions {
        flex-direction: column;
    }
    
    .dnpc-alternatives-grid {
        grid-template-columns: 1fr;
    }
    
    .dnpc-progress {
        padding: 1rem 1.5rem;
    }
    
    .dnpc-amount {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .dnpc-budget-options {
        grid-template-columns: 1fr;
    }
    
    .dnpc-plan-features ul {
        grid-template-columns: 1fr;
    }
    
    .dnpc-amount {
        font-size: 2rem;
    }
}

/* Compact Style */
.dnpc-style-compact {
    max-width: 600px;
}

.dnpc-style-compact .dnpc-header {
    padding: 1.5rem 1.5rem 1rem;
}

.dnpc-style-compact .dnpc-title {
    font-size: 1.5rem;
}

.dnpc-style-compact .dnpc-content {
    padding: 1.5rem;
}

.dnpc-style-compact .dnpc-device-options,
.dnpc-style-compact .dnpc-usage-selector {
    grid-template-columns: 1fr;
}

.dnpc-style-compact .dnpc-device-card,
.dnpc-style-compact .dnpc-usage-card {
    padding: 1rem;
}

/* Color Schemes */
.dnpc-calculator.dnpc-scheme-blue {
    --dnpc-primary: #2563eb;
    --dnpc-primary-light: #3b82f6;
}

.dnpc-calculator.dnpc-scheme-green {
    --dnpc-primary: #059669;
    --dnpc-primary-light: #10b981;
}

.dnpc-calculator.dnpc-scheme-purple {
    --dnpc-primary: #7c3aed;
    --dnpc-primary-light: #8b5cf6;
}

/* Loading State */
.dnpc-calculator.loading {
    pointer-events: none;
}

.dnpc-calculator.loading .dnpc-btn-calculate .dnpc-btn-text {
    display: none;
}

.dnpc-calculator.loading .dnpc-btn-calculate .dnpc-btn-loading {
    display: inline-flex;
}

/* Accessibility */
.dnpc-calculator *:focus {
    outline: 2px solid var(--dnpc-primary);
    outline-offset: 2px;
}

.dnpc-calculator button:focus,
.dnpc-calculator input:focus {
    outline: 2px solid var(--dnpc-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .dnpc-calculator {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .dnpc-navigation,
    .dnpc-progress {
        display: none;
    }
}