/**
 * Car Drive Management - Unified Button System
 * Professional, responsive button styles for the entire system
 * Version 3.0 - Modern design with accessibility
 */

/* CSS Custom Properties for Button System */
:root {
    /* Button Colors */
    --btn-primary: #007bff;
    --btn-primary-hover: #0056b3;
    --btn-primary-active: #004085;
    
    --btn-secondary: #6c757d;
    --btn-secondary-hover: #5a6268;
    --btn-secondary-active: #484e53;
    
    --btn-success: #28a745;
    --btn-success-hover: #1e7e34;
    --btn-success-active: #155724;
    
    --btn-warning: #ffc107;
    --btn-warning-hover: #e0a800;
    --btn-warning-active: #d39e00;
    
    --btn-danger: #dc3545;
    --btn-danger-hover: #c82333;
    --btn-danger-active: #bd2130;
    
    --btn-info: #17a2b8;
    --btn-info-hover: #138496;
    --btn-info-active: #0f6674;
    
    --btn-light: #f8f9fa;
    --btn-light-hover: #e2e6ea;
    --btn-light-active: #dae0e5;
    
    --btn-dark: #343a40;
    --btn-dark-hover: #23272b;
    --btn-dark-active: #1d2124;
    
    /* Button Properties */
    --btn-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --btn-font-weight: 600;
    --btn-font-size: 14px;
    --btn-line-height: 1.5;
    
    --btn-padding-y: 8px;
    --btn-padding-x: 16px;
    --btn-border-radius: 6px;
    --btn-border-width: 1px;
    
    --btn-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --btn-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --btn-shadow-hover: 0 4px 8px rgba(0, 0, 0, 0.15);
    --btn-shadow-active: 0 1px 2px rgba(0, 0, 0, 0.2);
    
    /* Button Sizes */
    --btn-sm-font-size: 12px;
    --btn-sm-padding-y: 6px;
    --btn-sm-padding-x: 12px;
    --btn-sm-border-radius: 4px;
    
    --btn-lg-font-size: 16px;
    --btn-lg-padding-y: 12px;
    --btn-lg-padding-x: 24px;
    --btn-lg-border-radius: 8px;
}

/* Base Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    
    font-family: var(--btn-font-family);
    font-weight: var(--btn-font-weight);
    font-size: var(--btn-font-size);
    line-height: var(--btn-line-height);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    
    padding: var(--btn-padding-y) var(--btn-padding-x);
    margin: 0;
    border: var(--btn-border-width) solid transparent;
    border-radius: var(--btn-border-radius);
    
    background-color: transparent;
    color: inherit;
    
    cursor: pointer;
    transition: var(--btn-transition);
    transform: translateZ(0); /* Hardware acceleration */
    
    /* Enhanced accessibility */
    position: relative;
    overflow: hidden;
    
    /* Anti-aliasing */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--btn-shadow-hover);
}

.btn:active,
.btn.active {
    transform: translateY(0);
    box-shadow: var(--btn-shadow-active);
    transition: all 0.1s ease;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.btn:disabled,
.btn.disabled {
    pointer-events: none;
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Button Variants */
.btn-primary {
    color: #fff;
    background-color: var(--btn-primary);
    border-color: var(--btn-primary);
    box-shadow: var(--btn-shadow);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--btn-primary-hover);
    border-color: var(--btn-primary-hover);
}

.btn-primary:active:not(:disabled),
.btn-primary.active {
    background-color: var(--btn-primary-active);
    border-color: var(--btn-primary-active);
}

.btn-secondary {
    color: #fff;
    background-color: var(--btn-secondary);
    border-color: var(--btn-secondary);
    box-shadow: var(--btn-shadow);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--btn-secondary-hover);
    border-color: var(--btn-secondary-hover);
}

.btn-secondary:active:not(:disabled),
.btn-secondary.active {
    background-color: var(--btn-secondary-active);
    border-color: var(--btn-secondary-active);
}

.btn-success {
    color: #fff;
    background-color: var(--btn-success);
    border-color: var(--btn-success);
    box-shadow: var(--btn-shadow);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--btn-success-hover);
    border-color: var(--btn-success-hover);
}

.btn-success:active:not(:disabled),
.btn-success.active {
    background-color: var(--btn-success-active);
    border-color: var(--btn-success-active);
}

.btn-warning {
    color: #212529;
    background-color: var(--btn-warning);
    border-color: var(--btn-warning);
    box-shadow: var(--btn-shadow);
}

.btn-warning:hover:not(:disabled) {
    color: #212529;
    background-color: var(--btn-warning-hover);
    border-color: var(--btn-warning-hover);
}

.btn-warning:active:not(:disabled),
.btn-warning.active {
    background-color: var(--btn-warning-active);
    border-color: var(--btn-warning-active);
}

.btn-danger {
    color: #fff;
    background-color: var(--btn-danger);
    border-color: var(--btn-danger);
    box-shadow: var(--btn-shadow);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--btn-danger-hover);
    border-color: var(--btn-danger-hover);
}

.btn-danger:active:not(:disabled),
.btn-danger.active {
    background-color: var(--btn-danger-active);
    border-color: var(--btn-danger-active);
}

.btn-info {
    color: #fff;
    background-color: var(--btn-info);
    border-color: var(--btn-info);
    box-shadow: var(--btn-shadow);
}

.btn-info:hover:not(:disabled) {
    background-color: var(--btn-info-hover);
    border-color: var(--btn-info-hover);
}

.btn-info:active:not(:disabled),
.btn-info.active {
    background-color: var(--btn-info-active);
    border-color: var(--btn-info-active);
}

.btn-light {
    color: #212529;
    background-color: var(--btn-light);
    border-color: var(--btn-light);
    box-shadow: var(--btn-shadow);
}

.btn-light:hover:not(:disabled) {
    color: #212529;
    background-color: var(--btn-light-hover);
    border-color: var(--btn-light-hover);
}

.btn-light:active:not(:disabled),
.btn-light.active {
    background-color: var(--btn-light-active);
    border-color: var(--btn-light-active);
}

.btn-dark {
    color: #fff;
    background-color: var(--btn-dark);
    border-color: var(--btn-dark);
    box-shadow: var(--btn-shadow);
}

.btn-dark:hover:not(:disabled) {
    background-color: var(--btn-dark-hover);
    border-color: var(--btn-dark-hover);
}

.btn-dark:active:not(:disabled),
.btn-dark.active {
    background-color: var(--btn-dark-active);
    border-color: var(--btn-dark-active);
}

/* Outline Button Variants */
.btn-outline-primary {
    color: var(--btn-primary);
    border-color: var(--btn-primary);
    background-color: transparent;
}

.btn-outline-primary:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-primary);
}

.btn-outline-secondary {
    color: var(--btn-secondary);
    border-color: var(--btn-secondary);
    background-color: transparent;
}

.btn-outline-secondary:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-secondary);
}

.btn-outline-success {
    color: var(--btn-success);
    border-color: var(--btn-success);
    background-color: transparent;
}

.btn-outline-success:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-success);
}

.btn-outline-warning {
    color: var(--btn-warning);
    border-color: var(--btn-warning);
    background-color: transparent;
}

.btn-outline-warning:hover:not(:disabled) {
    color: #212529;
    background-color: var(--btn-warning);
}

.btn-outline-danger {
    color: var(--btn-danger);
    border-color: var(--btn-danger);
    background-color: transparent;
}

.btn-outline-danger:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-danger);
}

.btn-outline-info {
    color: var(--btn-info);
    border-color: var(--btn-info);
    background-color: transparent;
}

.btn-outline-info:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-info);
}

.btn-outline-light {
    color: var(--btn-light);
    border-color: var(--btn-light);
    background-color: transparent;
}

.btn-outline-light:hover:not(:disabled) {
    color: #212529;
    background-color: var(--btn-light);
}

.btn-outline-dark {
    color: var(--btn-dark);
    border-color: var(--btn-dark);
    background-color: transparent;
}

.btn-outline-dark:hover:not(:disabled) {
    color: #fff;
    background-color: var(--btn-dark);
}

/* Button Sizes */
.btn-sm {
    font-size: var(--btn-sm-font-size);
    padding: var(--btn-sm-padding-y) var(--btn-sm-padding-x);
    border-radius: var(--btn-sm-border-radius);
    gap: 4px;
}

.btn-lg {
    font-size: var(--btn-lg-font-size);
    padding: var(--btn-lg-padding-y) var(--btn-lg-padding-x);
    border-radius: var(--btn-lg-border-radius);
    gap: 8px;
}

/* Button Layout Options */
.btn-block {
    display: flex;
    width: 100%;
}

.btn-group {
    display: inline-flex;
    vertical-align: middle;
}

.btn-group > .btn {
    position: relative;
    flex: 1 1 auto;
    margin-right: -1px;
}

.btn-group > .btn:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.btn-group > .btn:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.btn-group > .btn:hover {
    z-index: 1;
}

.btn-group > .btn:focus,
.btn-group > .btn:active,
.btn-group > .btn.active {
    z-index: 2;
}

/* Special Button Types */
.btn-new-item {
    color: #fff;
    background: linear-gradient(135deg, var(--btn-primary) 0%, var(--btn-primary-hover) 100%);
    border: none;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-new-item:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--btn-primary-hover) 0%, var(--btn-primary-active) 100%);
    box-shadow: 0 6px 16px rgba(0, 123, 255, 0.4);
    transform: translateY(-2px);
}

.btn-filter {
    color: var(--btn-secondary);
    background-color: #fff;
    border: 1px solid #e9ecef;
    font-size: 13px;
    padding: 6px 12px;
}

.btn-filter-primary {
    color: #fff;
    background-color: var(--btn-primary);
    border-color: var(--btn-primary);
}

.btn-filter-primary:hover:not(:disabled) {
    background-color: var(--btn-primary-hover);
    border-color: var(--btn-primary-hover);
}

.btn-filter-secondary {
    color: var(--btn-secondary);
    background-color: #fff;
    border-color: #e9ecef;
}

.btn-filter-secondary:hover:not(:disabled) {
    color: var(--btn-secondary-hover);
    background-color: #f8f9fa;
    border-color: #dee2e6;
}

/* Icon Buttons */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    font-size: 18px;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
    font-size: 14px;
}

.btn-icon.btn-lg {
    width: 48px;
    height: 48px;
    font-size: 22px;
}

/* Loading State */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: btn-spin 0.8s linear infinite;
}

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

/* Action Button Shortcuts */
.btn-view { /* View/Visualizar */
    color: #fff;
    background-color: var(--btn-info);
    border-color: var(--btn-info);
}

.btn-edit { /* Edit/Editar */
    color: #212529;
    background-color: var(--btn-warning);
    border-color: var(--btn-warning);
}

.btn-delete { /* Delete/Excluir */
    color: #fff;
    background-color: var(--btn-danger);
    border-color: var(--btn-danger);
}

.btn-activate { /* Ativar */
    color: #fff;
    background-color: var(--btn-success);
    border-color: var(--btn-success);
}

.btn-deactivate { /* Desativar */
    color: #212529;
    background-color: var(--btn-warning);
    border-color: var(--btn-warning);
}

/* Responsive Design */
@media (max-width: 768px) {
    .btn {
        font-size: 13px;
        padding: 6px 12px;
        min-height: 36px;
        touch-action: manipulation; /* Improve touch responsiveness */
    }
    
    .btn-sm {
        font-size: 11px;
        padding: 4px 8px;
        min-height: 28px;
    }
    
    .btn-lg {
        font-size: 15px;
        padding: 10px 20px;
        min-height: 44px;
    }
    
    .btn-group {
        flex-wrap: wrap;
        gap: 4px;
    }
    
    .btn-group > .btn {
        margin: 0;
        border-radius: var(--btn-border-radius);
    }
    
    /* Stack buttons vertically on small screens */
    .btn-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-toolbar .btn {
        width: 100%;
        margin-bottom: 8px;
    }
}

@media (max-width: 480px) {
    .btn {
        font-size: 12px;
        padding: 8px 12px;
        min-height: 40px;
        border-radius: 8px;
    }
    
    .btn-sm {
        padding: 6px 10px;
        min-height: 32px;
    }
    
    /* Larger touch targets for mobile */
    .btn-icon {
        width: 44px;
        height: 44px;
    }
    
    .btn-icon.btn-sm {
        width: 36px;
        height: 36px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --btn-light: #495057;
        --btn-light-hover: #6c757d;
        --btn-light-active: #868e96;
        
        --btn-shadow: 0 2px 4px rgba(255, 255, 255, 0.1);
        --btn-shadow-hover: 0 4px 8px rgba(255, 255, 255, 0.15);
    }
    
    .btn-filter {
        background-color: #343a40;
        border-color: #495057;
        color: #e9ecef;
    }
    
    .btn-filter-secondary {
        background-color: #343a40;
        border-color: #495057;
        color: #e9ecef;
    }
    
    .btn-filter-secondary:hover:not(:disabled) {
        background-color: #495057;
        border-color: #6c757d;
    }
}

/* Print Styles */
@media print {
    .btn {
        box-shadow: none !important;
        background-color: transparent !important;
        border: 1px solid #000 !important;
        color: #000 !important;
    }
    
    .btn-primary,
    .btn-success,
    .btn-info,
    .btn-warning,
    .btn-danger {
        background-color: #fff !important;
    }
}

/* Animation Utilities */
.btn-pulse {
    animation: btn-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.btn-bounce:hover {
    animation: btn-bounce 0.5s ease;
}

@keyframes btn-bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-4px);
    }
    60% {
        transform: translateY(-2px);
    }
}

/* Focus Management for Screen Readers */
.btn:focus-visible {
    outline: 2px solid var(--btn-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn {
        border-width: 2px;
        font-weight: 700;
    }
    
    .btn:hover {
        transform: none; /* Reduce motion for high contrast */
    }
    
    .btn:focus {
        outline: 3px solid;
        outline-offset: 2px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .btn::before {
        transition: none;
        animation: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .btn-loading::before {
        animation: none;
    }
}