/**
 * Nightingale Server Monitoring - Component Styles
 * 
 * Reusable UI components including forms, alerts, modals, and navigation.
 * Depends on: base.css
 * 
 * @author Nightingale Team
 * @version 1.0.0
 */

/* ============================================
   Page Layout Improvements
   ============================================ */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    margin: 0;
    color: var(--color-text);
    font-size: 1.75rem;
    font-weight: 600;
}

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

.content-section {
    margin-bottom: var(--spacing-xl);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.section-description {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.filter-bar {
    background: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Server table specific improvements */
.server-table .server-name {
    font-weight: 600;
    color: var(--color-text);
}

.server-table .server-hostname {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-background-alt);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-top: var(--spacing-xs);
}

.server-table .server-description {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* ============================================
   Forms & Input Controls
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(74, 159, 204, 0.2);
    border-radius: 8px;
    transition: all 0.3s ease;
    box-sizing: border-box;
    backdrop-filter: blur(5px);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 1);
    box-shadow: 
        0 0 0 3px rgba(74, 159, 204, 0.1),
        0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: rgba(0, 0, 0, 0.4);
    font-style: italic;
}

.form-input:hover:not(:focus) {
    border-color: rgba(74, 159, 204, 0.4);
    background: rgba(255, 255, 255, 0.95);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    background-clip: padding-box;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 159, 204, 0.1);
}

.form-control:disabled {
    background-color: var(--color-background-alt);
    opacity: 0.6;
    cursor: not-allowed;
}

/* Select dropdowns */
.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    background-size: 16px 12px;
    padding-right: calc(var(--spacing-md) + 20px);
}

.form-select-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-right: calc(var(--spacing-sm) + 20px);
    font-size: 0.75rem;
}

/* Textarea */
.form-control.textarea {
    min-height: 100px;
    resize: vertical;
}

/* Checkboxes and Radios */
.form-check {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin-right: var(--spacing-sm);
    cursor: pointer;
}

.form-check-label {
    cursor: pointer;
    user-select: none;
}

/* Form validation states */
.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

.invalid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-danger);
}

.valid-feedback {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-success);
}

/* Form layouts */
.form-inline {
    display: flex;
    flex-flow: row wrap;
    align-items: center;
    gap: var(--spacing-sm);
}

.form-inline .form-group {
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* ============================================
   Alerts & Notifications
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    position: relative;
}

.alert-success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}

.alert-danger {
    color: #842029;
    background-color: #f8d7da;
    border-color: #f5c2c7;
}

.alert-warning {
    color: #664d03;
    background-color: #fff3cd;
    border-color: #ffecb5;
}

.alert-info {
    color: #055160;
    background-color: #cff4fc;
    border-color: #b6effb;
}

.alert-dismissible {
    padding-right: calc(var(--spacing-lg) + 30px);
}

.alert-close {
    position: absolute;
    top: 0;
    right: 0;
    padding: var(--spacing-md);
    color: inherit;
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.alert-close:hover {
    opacity: 0.8;
}

/* Alert list styles */
.alert-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.alert-item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: flex-start;
}

.alert-item:last-child {
    border-bottom: none;
}

.alert-severity {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    margin-right: var(--spacing-md);
    margin-top: 6px;
    flex-shrink: 0;
}

.alert-content {
    flex: 1;
    min-width: 0;
}

.alert-title {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.alert-message {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.alert-time {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* Toast notifications */
.alert-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 300px;
    max-width: 500px;
    padding: var(--spacing-md);
    background: var(--color-background);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transform: translateX(400px);
    transition: transform var(--transition-normal);
    z-index: 9999;
}

.alert-toast.toast-show {
    transform: translateX(0);
}

/* ============================================
   Modals
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-background);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-background-alt);
}

.modal-body {
    padding: var(--spacing-lg);
    max-height: calc(90vh - 140px);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* Modal sizes */
.modal.modal-sm { max-width: 300px; }
.modal.modal-lg { max-width: 800px; }
.modal.modal-xl { max-width: 1140px; }

/* ============================================
   Navigation & Tabs
   ============================================ */
.nav-tabs {
    display: flex;
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    list-style: none;
    padding: 0;
}

.nav-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: -2px;
}

.nav-tab:hover {
    color: var(--color-text);
    background: var(--color-background-alt);
}

.nav-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Tab content */
.tab-content {
    padding: var(--spacing-lg) 0;
}

.tab-pane {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-pane.active {
    display: block;
}

/* Breadcrumbs */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-md);
    list-style: none;
    background: transparent;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    padding: 0 var(--spacing-sm);
    color: var(--color-text-muted);
}

.breadcrumb-item.active {
    color: var(--color-text-muted);
}

/* ============================================
   Charts & Visualizations
   ============================================ */
.chart-container {
    position: relative;
    width: 100%;
    height: 370px !important;
    padding: 15px;
    box-sizing: border-box;
    overflow: visible !important;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.chart-container.chart-small {
    height: 200px;
}

.chart-container.chart-large {
    height: 400px;
}

.chart-container-full {
    position: relative;
    width: 100%;
    height: 700px !important;
    padding: 15px;
    box-sizing: border-box;
    overflow: visible !important;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.gauge-container {
    position: relative;
    width: 100%;
    height: 300px;
    padding: 10px;
    box-sizing: border-box;
    overflow: hidden;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Ensure canvas elements fit within their containers */
.chart-container canvas,
.chart-container-full canvas,
.gauge-container canvas {
    max-width: 100% !important;
    max-height: 100% !important;
    width: auto !important;
    height: auto !important;
    display: block;
}

.chart-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.chart-no-data {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Chart legends */
.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
}

.chart-legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.chart-legend-color {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-sm);
}

/* Chart tabs */
.chart-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.chart-tab-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chart-tab-btn:hover {
    background: var(--color-background);
    color: var(--color-text);
}

.chart-tab-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* ============================================
   Dropdowns
   ============================================ */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 100;
    display: none;
    min-width: 160px;
    padding: var(--spacing-xs) 0;
    margin-top: var(--spacing-xs);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--color-text);
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--color-background-alt);
}

.dropdown-divider {
    height: 0;
    margin: var(--spacing-xs) 0;
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Progress Bars
   ============================================ */
.progress {
    height: 20px;
    background: var(--color-background-alt);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    height: 100%;
    background: var(--color-primary);
    transition: width var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
}

.progress-bar.bg-success { background: var(--color-success); }
.progress-bar.bg-danger { background: var(--color-danger); }
.progress-bar.bg-warning { background: var(--color-warning); }
.progress-bar.bg-info { background: var(--color-info); }

/* ============================================
   Tooltips
   ============================================ */
.tooltip {
    position: absolute;
    z-index: 1000;
    display: none;
    max-width: 200px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-background-dark);
    color: var(--color-text-light);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    pointer-events: none;
}

.tooltip.show {
    display: block;
}

.tooltip-arrow {
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
}

.tooltip.top .tooltip-arrow {
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px 5px 0;
    border-color: var(--color-background-dark) transparent transparent;
}