/**
 * Custom Taggers Page Styles
 * Enterprise-grade CSS with accessibility, responsive design, and modern features
 * 
 * @version 2.0.0
 */

/* ============================================================================
   CSS Variables for Theming and Maintainability
   ============================================================================ */

:root {
    /* Colors */
    --color-primary: #4caf50;
    --color-primary-hover: #45a049;
    --color-primary-dark: #2e7d32;
    --color-secondary: #f0f0f0;
    --color-secondary-hover: #e0e0e0;
    --color-danger: #f44336;
    --color-danger-hover: #d32f2f;
    --color-success: #4caf50;
    --color-error: #f44336;
    --color-warning: #ff9800;
    --color-info: #2196f3;
    
    /* Text Colors */
    --color-text-primary: #333;
    --color-text-secondary: #666;
    --color-text-muted: #999;
    --color-text-inverse: #fff;
    
    /* Background Colors */
    --color-bg-primary: #fff;
    --color-bg-secondary: #f5f5f5;
    --color-bg-tertiary: #fafafa;
    --color-bg-disabled: #f5f5f5;
    
    /* Border Colors */
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;
    --color-border-dark: #ccc;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 28px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
    
    /* Z-index layers */
    --z-index-dropdown: 1000;
    --z-index-modal: 2000;
    --z-index-tooltip: 3000;
    
    /* Breakpoints (for reference, use media queries) */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
}

/* ============================================================================
   Reset & Base Styles
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    padding: var(--spacing-md);
    min-height: 100vh;
}

/* ============================================================================
   Accessibility
   ============================================================================ */

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: var(--z-index-tooltip);
    border-radius: var(--radius-sm);
}

.skip-link:focus {
    top: var(--spacing-sm);
    outline: 2px solid var(--color-text-inverse);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================================================
   Layout Components
   ============================================================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

h1 {
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
}

h2, h3, h4 {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    margin: 0 0 var(--spacing-md) 0;
}

h2 {
    font-size: var(--font-size-lg);
}

h3 {
    font-size: var(--font-size-md);
}

h4 {
    font-size: var(--font-size-base);
}

/* ============================================================================
   Links & Navigation
   ============================================================================ */

.back-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color var(--transition-base);
    margin-top: var(--spacing-xs);
}

.back-link:hover,
.back-link:focus {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

.back-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    font-family: inherit;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    line-height: 1.5;
    min-height: 40px;
}

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

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn-primary:hover:not(:disabled),
.btn-primary:focus:not(:disabled) {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-text-primary);
}

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

.btn-danger {
    background: var(--color-danger);
    color: var(--color-text-inverse);
}

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

.btn-small {
    padding: 6px 12px;
    font-size: var(--font-size-sm);
    min-height: 32px;
}

.btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ============================================================================
   Forms
   ============================================================================ */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.form-group label.required::after {
    content: ' *';
    color: var(--color-error);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    background: var(--color-bg-primary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
    outline: none;
}

.form-group input.error,
.form-group textarea.error,
.form-group select.error {
    border-color: var(--color-error);
}

.form-group input:disabled {
    background: var(--color-bg-disabled);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.error-message {
    display: none;
    margin-top: var(--spacing-xs);
    color: var(--color-error);
    font-size: var(--font-size-sm);
}

.error-message[style*="display: block"] {
    display: block;
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.required {
    color: var(--color-error);
    font-weight: var(--font-weight-semibold);
}

/* ============================================================================
   Message Containers
   ============================================================================ */

.message-container {
    margin-bottom: var(--spacing-lg);
}

.error {
    padding: var(--spacing-md);
    background: #fee;
    border: 1px solid #fcc;
    border-left: 4px solid var(--color-error);
    border-radius: var(--radius-sm);
    color: var(--color-error);
    margin-bottom: var(--spacing-md);
    animation: slideIn 0.3s ease-out;
}

.success {
    padding: var(--spacing-md);
    background: #efe;
    border: 1px solid #cfc;
    border-left: 4px solid var(--color-success);
    border-radius: var(--radius-sm);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
    animation: slideIn 0.3s ease-out;
}

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

/* ============================================================================
   Loading States
   ============================================================================ */

.loading-container {
    display: none;
    text-align: center;
    padding: var(--spacing-xxl);
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================================================
   Tagger Cards
   ============================================================================ */

.taggers-list {
    margin-bottom: var(--spacing-xl);
}

.tagger-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    background: var(--color-bg-tertiary);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.tagger-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tagger-card.enabled {
    border-left: 4px solid var(--color-primary);
}

.tagger-card.disabled {
    border-left: 4px solid var(--color-text-muted);
    opacity: 0.7;
}

.tagger-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.tagger-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tagger-tag {
    display: inline-block;
    padding: 4px 8px;
    background: #e3f2fd;
    color: #1976d2;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.tagger-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tagger-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.tagger-conditions {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.tagger-conditions h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.condition-item {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
}

.condition-item::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.tagger-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.status-badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.status-enabled {
    background: #e8f5e9;
    color: var(--color-primary-dark);
}

.status-disabled {
    background: var(--color-bg-disabled);
    color: var(--color-text-muted);
}

/* ============================================================================
   Modal
   ============================================================================ */

.modal {
    display: none;
    position: fixed;
    z-index: var(--z-index-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    overflow: auto;
    animation: fadeIn var(--transition-base);
}

.modal[aria-hidden="false"] {
    display: block;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.modal-content {
    background: var(--color-bg-primary);
    margin: 50px auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    z-index: 1;
    animation: slideUp 0.3s ease-out;
    box-shadow: var(--shadow-lg);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.close {
    color: var(--color-text-muted);
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.close:hover,
.close:focus {
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
}

/* ============================================================================
   Conditions Editor
   ============================================================================ */

.conditions-editor {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
}

.conditions-list {
    margin-bottom: var(--spacing-md);
    min-height: 60px;
}

.condition-item-editor {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base);
}

.condition-item-editor:hover {
    box-shadow: var(--shadow-sm);
}

.condition-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.condition-item-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.condition-item-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.condition-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 8px;
    background: #e3f2fd;
    color: #1976d2;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.add-condition-form {
    background: var(--color-bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    border: 2px dashed var(--color-border);
}

.add-condition-form select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.btn-remove {
    background: var(--color-danger);
    color: var(--color-text-inverse);
    border: none;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: var(--font-size-xs);
    transition: background var(--transition-base);
}

.btn-remove:hover,
.btn-remove:focus {
    background: var(--color-danger-hover);
}

.empty-conditions {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-muted);
    font-style: italic;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    color: var(--color-text-muted);
}

.empty-state p {
    margin-bottom: var(--spacing-sm);
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

/* Phase 1 & 2 Status Indicators */
.phase-status {
    display: flex;
    gap: 15px;
    padding: 15px;
    background: var(--color-bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.phase-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 200px;
}

.phase-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.phase-badge.phase1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.phase-badge.phase2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.status-text {
    font-size: 13px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.status-text.safe {
    color: var(--color-success);
}

.status-text.normal {
    color: var(--color-info);
}

.status-text.warning {
    color: var(--color-warning);
}

.status-text.critical {
    color: var(--color-error);
    font-weight: 600;
}

@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }
    
    .container {
        padding: var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px auto;
        padding: var(--spacing-md);
    }
    
    .tagger-header {
        flex-direction: column;
    }
    
    .tagger-actions {
        width: 100%;
        justify-content: flex-end;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: var(--font-size-lg);
    }
    
    .btn {
        font-size: var(--font-size-sm);
        padding: 8px 16px;
    }
}

/* ============================================================================
   Print Styles
   ============================================================================ */

@media print {
    body {
        background: white;
        padding: 0;
    }
    
    .container {
        box-shadow: none;
        padding: 0;
    }
    
    .header-actions,
    .tagger-actions,
    .modal,
    .btn,
    .add-condition-form {
        display: none;
    }
    
    .tagger-card {
        page-break-inside: avoid;
        border: 1px solid #000;
    }
}

/* ============================================================================
   High Contrast Mode Support
   ============================================================================ */

@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --color-text-primary: #000;
        --color-text-secondary: #000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* ============================================================================
   Reduced Motion Support
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================================
   Dark Mode Support (Optional - can be enabled)
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --color-bg-primary: #1a1a1a;
        --color-bg-secondary: #121212;
        --color-bg-tertiary: #1e1e1e;
        --color-text-primary: #e0e0e0;
        --color-text-secondary: #b0b0b0;
        --color-text-muted: #808080;
        --color-border: #333;
    }
    */
}