/**
 * Rapid Networks Design System — rpd-ui v1.0
 * Unified brand styling for all Rapid Networks dashboards
 *
 * Usage: <link href="/rpd-ui/rpd-ui.css" rel="stylesheet">
 *
 * Dependencies: Bootstrap 5.3+, Font Awesome 6.4+
 * Both are loaded automatically by rpd-ui.js if not present.
 */

/* ============================================================
   1. DESIGN TOKENS (CSS Custom Properties)
   ============================================================ */

:root {
    /* Brand Colors */
    --rpd-green: #33CC33;
    --rpd-green-dark: #29a329;
    --rpd-green-light: #4ae04a;
    --rpd-blue: #1B6192;
    --rpd-blue-dark: #155073;
    --rpd-blue-light: #2178ad;

    /* Semantic Colors */
    --rpd-success: var(--rpd-green);
    --rpd-danger: #e74c3c;
    --rpd-danger-dark: #c0392b;
    --rpd-warning: #f39c12;
    --rpd-warning-dark: #d68910;
    --rpd-info: var(--rpd-blue);

    /* Surfaces — Light Mode (default) */
    --rpd-bg: #f5f5f5;
    --rpd-bg-card: #ffffff;
    --rpd-bg-header: var(--rpd-blue);
    --rpd-bg-hover: #f8f9fa;
    --rpd-bg-elevated: #ffffff;

    /* Text */
    --rpd-text: #333333;
    --rpd-text-muted: #666666;
    --rpd-text-inverse: #ffffff;
    --rpd-text-heading: #1a1a2e;

    /* Borders */
    --rpd-border: #dddddd;
    --rpd-border-light: #e9ecef;

    /* Shadows */
    --rpd-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --rpd-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --rpd-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.12);
    --rpd-shadow-glow: 0 0 20px rgba(51, 204, 51, 0.3);

    /* Gradients */
    --rpd-gradient-blue: linear-gradient(135deg, #1B6192 0%, #155073 100%);
    --rpd-gradient-green: linear-gradient(135deg, #33CC33 0%, #29a329 100%);
    --rpd-gradient-header: linear-gradient(135deg, #1B6192 0%, #155073 100%);

    /* Typography */
    --rpd-font: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --rpd-font-mono: 'Consolas', 'Monaco', 'Courier New', monospace;

    /* Spacing */
    --rpd-space-xs: 4px;
    --rpd-space-sm: 8px;
    --rpd-space-md: 16px;
    --rpd-space-lg: 24px;
    --rpd-space-xl: 32px;
    --rpd-space-2xl: 48px;

    /* Radii */
    --rpd-radius-sm: 6px;
    --rpd-radius-md: 8px;
    --rpd-radius-lg: 12px;
    --rpd-radius-xl: 16px;
    --rpd-radius-pill: 25px;
    --rpd-radius-round: 50%;

    /* Transitions */
    --rpd-transition: all 0.3s ease;
    --rpd-transition-fast: all 0.15s ease;
}

/* ============================================================
   2. DARK MODE TOKENS
   ============================================================ */

body.dark-mode,
[data-theme="dark"] {
    --rpd-bg: #0f172a;
    --rpd-bg-card: #1e293b;
    --rpd-bg-header: #1e293b;
    --rpd-bg-hover: #334155;
    --rpd-bg-elevated: #283548;

    --rpd-text: #f1f5f9;
    --rpd-text-muted: #94a3b8;
    --rpd-text-heading: #e2e8f0;

    --rpd-border: #334155;
    --rpd-border-light: #2a3a4e;

    --rpd-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --rpd-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --rpd-shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.5);
    --rpd-shadow-glow: 0 0 20px rgba(51, 204, 51, 0.4);
}

/* ============================================================
   3. BASE / RESET
   ============================================================ */

body.rpd-ui,
.rpd-ui {
    font-family: var(--rpd-font);
    background-color: var(--rpd-bg);
    color: var(--rpd-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.rpd-ui *,
.rpd-ui *::before,
.rpd-ui *::after {
    box-sizing: border-box;
}

/* ============================================================
   4. DASHBOARD HEADER
   ============================================================ */

.rpd-header {
    background: var(--rpd-gradient-header);
    color: var(--rpd-text-inverse);
    padding: var(--rpd-space-lg);
    border-bottom: 4px solid var(--rpd-green);
    box-shadow: var(--rpd-shadow-md);
    position: relative;
    z-index: 100;
}

.rpd-header-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--rpd-space-lg);
    max-width: 1600px;
    margin: 0 auto;
}

.rpd-header-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--rpd-space-sm);
}

.rpd-header-title .rpd-brand {
    color: var(--rpd-green);
    font-weight: 700;
}

.rpd-header-subtitle {
    font-size: 13px;
    opacity: 0.8;
    margin-top: 2px;
}

.rpd-header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--rpd-space-sm);
}

/* Header — Responsive */
@media (max-width: 768px) {
    .rpd-header-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .rpd-header-right {
        justify-content: center;
    }
}

/* ============================================================
   5. NAVIGATION
   ============================================================ */

.rpd-nav {
    display: flex;
    align-items: center;
    gap: var(--rpd-space-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.rpd-nav-item {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--rpd-text-inverse);
    border-radius: var(--rpd-radius-md);
    padding: 8px 16px;
    display: inline-flex;
    align-items: center;
    gap: var(--rpd-space-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--rpd-transition);
    white-space: nowrap;
}

.rpd-nav-item i,
.rpd-nav-item .rpd-nav-icon {
    color: var(--rpd-green);
}

.rpd-nav-item:hover {
    background: rgba(51, 204, 51, 0.2);
    border-color: var(--rpd-green);
    color: var(--rpd-text-inverse);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--rpd-shadow-glow);
}

.rpd-nav-item.active {
    background: var(--rpd-gradient-blue);
    border-color: var(--rpd-green);
    box-shadow: 0 0 20px rgba(51, 204, 51, 0.4);
    transform: translateY(-2px);
}

/* ============================================================
   6. SIDEBAR NAVIGATION (Alternate Layout)
   ============================================================ */

.rpd-sidebar {
    width: 260px;
    background: var(--rpd-gradient-blue);
    color: var(--rpd-text-inverse);
    min-height: 100vh;
    padding: var(--rpd-space-lg) 0;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 200;
    border-right: 3px solid var(--rpd-green);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.rpd-sidebar-header {
    padding: 0 var(--rpd-space-lg) var(--rpd-space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: var(--rpd-space-md);
}

.rpd-sidebar-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
}

.rpd-sidebar-header h2 .rpd-brand {
    color: var(--rpd-green);
}

.rpd-sidebar-header p {
    margin: 4px 0 0;
    font-size: 12px;
    opacity: 0.7;
}

.rpd-sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
}

.rpd-sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--rpd-space-sm);
    padding: 12px var(--rpd-space-lg);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--rpd-transition);
    border-left: 3px solid transparent;
    cursor: pointer;
}

.rpd-sidebar-item i,
.rpd-sidebar-item .rpd-sidebar-icon {
    color: var(--rpd-green);
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.rpd-sidebar-item:hover {
    background: rgba(51, 204, 51, 0.15);
    color: var(--rpd-text-inverse);
    border-left-color: var(--rpd-green);
    text-decoration: none;
}

.rpd-sidebar-item.active {
    background: rgba(51, 204, 51, 0.2);
    color: var(--rpd-text-inverse);
    border-left-color: var(--rpd-green);
    font-weight: 600;
}

.rpd-sidebar-badge {
    margin-left: auto;
    background: var(--rpd-danger);
    color: white;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--rpd-radius-pill);
    min-width: 22px;
    text-align: center;
}

.rpd-sidebar + .rpd-content {
    margin-left: 260px;
}

@media (max-width: 768px) {
    .rpd-sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .rpd-sidebar.open {
        transform: translateX(0);
    }
    .rpd-sidebar + .rpd-content {
        margin-left: 0;
    }
}

/* ============================================================
   7. CONTENT AREA
   ============================================================ */

.rpd-content {
    padding: var(--rpd-space-lg);
    max-width: 1600px;
    margin: 0 auto;
}

.rpd-page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--rpd-space-md);
    margin-bottom: var(--rpd-space-lg);
}

.rpd-page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--rpd-text-heading);
    margin: 0;
}

.rpd-page-subtitle {
    font-size: 14px;
    color: var(--rpd-text-muted);
    margin: 4px 0 0;
}

/* ============================================================
   8. CARDS
   ============================================================ */

.rpd-card {
    background: var(--rpd-bg-card);
    border-radius: var(--rpd-radius-lg);
    box-shadow: var(--rpd-shadow-sm);
    transition: var(--rpd-transition);
    border: 2px solid transparent;
    overflow: hidden;
}

.rpd-card:hover {
    box-shadow: var(--rpd-shadow-lg), var(--rpd-shadow-glow);
    border-color: var(--rpd-green);
    transform: translateY(-3px);
}

.rpd-card-header {
    padding: var(--rpd-space-md) var(--rpd-space-lg);
    border-bottom: 1px solid var(--rpd-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.rpd-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--rpd-text-heading);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--rpd-space-sm);
}

.rpd-card-title i {
    color: var(--rpd-green);
}

.rpd-card-body {
    padding: var(--rpd-space-lg);
}

.rpd-card-footer {
    padding: var(--rpd-space-md) var(--rpd-space-lg);
    border-top: 1px solid var(--rpd-border-light);
    background: var(--rpd-bg-hover);
}

/* No-hover variant for static content */
.rpd-card.rpd-card-static:hover {
    transform: none;
    box-shadow: var(--rpd-shadow-sm);
    border-color: transparent;
}

/* ============================================================
   9. STAT CARDS (Metric Cards)
   ============================================================ */

.rpd-stat {
    background: var(--rpd-bg-card);
    border-radius: var(--rpd-radius-lg);
    padding: var(--rpd-space-lg);
    box-shadow: var(--rpd-shadow-sm);
    transition: var(--rpd-transition);
    border: 2px solid transparent;
    text-align: center;
    position: relative;
    cursor: default;
}

.rpd-stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--rpd-shadow-lg), var(--rpd-shadow-glow);
    border-color: var(--rpd-green);
}

.rpd-stat.clickable {
    cursor: pointer;
}

.rpd-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--rpd-radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    margin-bottom: var(--rpd-space-sm);
}

.rpd-stat-icon.blue { background: var(--rpd-gradient-blue); }
.rpd-stat-icon.green { background: var(--rpd-gradient-green); }
.rpd-stat-icon.red { background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%); }
.rpd-stat-icon.orange { background: linear-gradient(135deg, #f39c12 0%, #d68910 100%); }
.rpd-stat-icon.purple { background: linear-gradient(135deg, #9b59b6 0%, #7d3c98 100%); }

.rpd-stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--rpd-text-muted);
    margin-bottom: var(--rpd-space-xs);
}

.rpd-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--rpd-text-heading);
    line-height: 1.2;
}

.rpd-stat-change {
    font-size: 12px;
    margin-top: var(--rpd-space-xs);
    font-weight: 600;
}

.rpd-stat-change.up { color: var(--rpd-green); }
.rpd-stat-change.down { color: var(--rpd-danger); }
.rpd-stat-change.neutral { color: var(--rpd-text-muted); }

/* ============================================================
   10. BUTTONS
   ============================================================ */

/* Base button */
.rpd-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--rpd-space-sm);
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--rpd-font);
    border-radius: var(--rpd-radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--rpd-transition);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}

.rpd-btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.rpd-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(51, 204, 51, 0.3);
}

/* Primary (Blue) */
.rpd-btn-primary {
    background: var(--rpd-gradient-blue);
    color: white;
    border-color: transparent;
}

.rpd-btn-primary:hover {
    box-shadow: 0 6px 20px rgba(27, 97, 146, 0.4);
    color: white;
}

/* Success (Green) */
.rpd-btn-success {
    background: var(--rpd-gradient-green);
    color: white;
    border-color: transparent;
}

.rpd-btn-success:hover {
    box-shadow: 0 6px 20px rgba(51, 204, 51, 0.4);
    color: white;
}

/* Danger */
.rpd-btn-danger {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    border-color: transparent;
}

.rpd-btn-danger:hover {
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
    color: white;
}

/* Outline Blue */
.rpd-btn-outline {
    background: transparent;
    color: var(--rpd-blue);
    border-color: var(--rpd-blue);
}

.rpd-btn-outline:hover {
    background: var(--rpd-blue);
    color: white;
    border-color: var(--rpd-green);
    box-shadow: 0 0 20px rgba(27, 97, 146, 0.3), 0 0 10px rgba(51, 204, 51, 0.2);
}

/* Ghost */
.rpd-btn-ghost {
    background: rgba(0, 0, 0, 0.04);
    color: var(--rpd-text);
    border-color: var(--rpd-border);
}

.rpd-btn-ghost:hover {
    background: rgba(51, 204, 51, 0.1);
    border-color: var(--rpd-green);
    color: var(--rpd-green-dark);
    box-shadow: 0 0 15px rgba(51, 204, 51, 0.2);
}

/* Pill shape (tabs, period selectors) */
.rpd-btn-pill {
    border-radius: var(--rpd-radius-pill);
}

/* On dark/header backgrounds */
.rpd-btn-glass {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--rpd-radius-pill);
}

.rpd-btn-glass i { color: var(--rpd-green); }

.rpd-btn-glass:hover {
    background: rgba(51, 204, 51, 0.2);
    border-color: var(--rpd-green);
    color: white;
    box-shadow: var(--rpd-shadow-glow);
}

.rpd-btn-glass.active {
    background: var(--rpd-gradient-blue);
    border-color: var(--rpd-green);
    box-shadow: 0 0 20px rgba(51, 204, 51, 0.5);
}

/* Sizes */
.rpd-btn-sm { padding: 6px 14px; font-size: 13px; }
.rpd-btn-lg { padding: 14px 32px; font-size: 16px; }

/* Loading state */
.rpd-btn-loading {
    color: transparent !important;
    pointer-events: none;
    position: relative;
}

.rpd-btn-loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: rpd-spin 0.6s linear infinite;
    left: calc(50% - 8px);
    top: calc(50% - 8px);
}

/* ============================================================
   11. TABLES
   ============================================================ */

.rpd-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 14px;
}

.rpd-table thead {
    background: var(--rpd-gradient-blue);
    color: white;
    position: sticky;
    top: 0;
    z-index: 10;
}

.rpd-table th {
    padding: 12px var(--rpd-space-md);
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    border-bottom: 3px solid var(--rpd-green);
    white-space: nowrap;
}

.rpd-table td {
    padding: 10px var(--rpd-space-md);
    border-bottom: 1px solid var(--rpd-border-light);
    color: var(--rpd-text);
    vertical-align: middle;
}

.rpd-table tbody tr {
    transition: var(--rpd-transition);
    border-left: 3px solid transparent;
}

.rpd-table tbody tr:hover {
    background: rgba(51, 204, 51, 0.05);
    border-left-color: var(--rpd-green);
    box-shadow: 0 2px 8px rgba(51, 204, 51, 0.1);
}

.rpd-table tbody tr:last-child td {
    border-bottom: none;
}

/* Scrollable table wrapper */
.rpd-table-wrap {
    background: var(--rpd-bg-card);
    border-radius: var(--rpd-radius-lg);
    box-shadow: var(--rpd-shadow-sm);
    overflow: auto;
    max-height: 600px;
}

/* ============================================================
   12. BADGES
   ============================================================ */

.rpd-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--rpd-radius-pill);
    white-space: nowrap;
}

.rpd-badge-green { background: var(--rpd-green); color: white; }
.rpd-badge-blue { background: var(--rpd-blue); color: white; }
.rpd-badge-red { background: var(--rpd-danger); color: white; }
.rpd-badge-orange { background: var(--rpd-warning); color: white; }
.rpd-badge-purple { background: #9b59b6; color: white; }
.rpd-badge-gray { background: #95a5a6; color: white; }

/* Status badges with gradients */
.rpd-badge-active { background: var(--rpd-gradient-green); color: white; }
.rpd-badge-inactive { background: linear-gradient(135deg, #95a5a6, #aab7b8); color: white; }
.rpd-badge-blocked { background: linear-gradient(135deg, #e74c3c, #ec7063); color: white; }
.rpd-badge-pending { background: linear-gradient(135deg, #f39c12, #f5b041); color: white; }
.rpd-badge-new { background: linear-gradient(135deg, #3498db, #5dade2); color: white; }

/* Outline badges */
.rpd-badge-outline {
    background: transparent;
    border: 1.5px solid currentColor;
}

/* ============================================================
   13. HEALTH / STATUS INDICATORS
   ============================================================ */

.rpd-health {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    animation: rpd-pulse 2s infinite;
}

.rpd-health-ok { background: var(--rpd-green); box-shadow: 0 0 10px var(--rpd-green); }
.rpd-health-warn { background: var(--rpd-warning); box-shadow: 0 0 10px var(--rpd-warning); }
.rpd-health-error { background: var(--rpd-danger); box-shadow: 0 0 10px var(--rpd-danger); }

/* ============================================================
   14. DARK MODE TOGGLE
   ============================================================ */

.rpd-dark-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border-radius: var(--rpd-radius-pill);
    display: inline-flex;
    align-items: center;
    gap: var(--rpd-space-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--rpd-transition);
}

.rpd-dark-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

/* ============================================================
   15. LEADERBOARD / LIST ITEMS
   ============================================================ */

.rpd-leaderboard-item {
    display: flex;
    align-items: center;
    padding: var(--rpd-space-md);
    margin-bottom: var(--rpd-space-sm);
    border-radius: var(--rpd-radius-md);
    background: var(--rpd-bg-hover);
    transition: var(--rpd-transition);
}

.rpd-leaderboard-item:hover {
    background: var(--rpd-bg-elevated);
    transform: translateX(5px);
    box-shadow: var(--rpd-shadow-sm);
}

.rpd-rank {
    font-size: 20px;
    font-weight: 700;
    width: 40px;
    text-align: center;
    color: var(--rpd-blue);
}

.rpd-rank.gold { color: #f39c12; }
.rpd-rank.silver { color: #95a5a6; }
.rpd-rank.bronze { color: #cd7f32; }

/* ============================================================
   16. FORM CONTROLS
   ============================================================ */

.rpd-input,
.rpd-select {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    font-family: var(--rpd-font);
    color: var(--rpd-text);
    background: var(--rpd-bg-card);
    border: 2px solid var(--rpd-border);
    border-radius: var(--rpd-radius-md);
    transition: var(--rpd-transition);
}

.rpd-input:focus,
.rpd-select:focus {
    outline: none;
    border-color: var(--rpd-green);
    box-shadow: 0 0 0 3px rgba(51, 204, 51, 0.15);
}

.rpd-input::placeholder {
    color: var(--rpd-text-muted);
}

.rpd-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--rpd-text-muted);
    margin-bottom: var(--rpd-space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================================
   17. ALERTS / NOTIFICATIONS
   ============================================================ */

.rpd-alert {
    padding: var(--rpd-space-md) var(--rpd-space-lg);
    border-radius: var(--rpd-radius-md);
    border-left: 4px solid;
    font-size: 14px;
    margin-bottom: var(--rpd-space-md);
}

.rpd-alert-success { background: rgba(51, 204, 51, 0.1); border-color: var(--rpd-green); color: var(--rpd-green-dark); }
.rpd-alert-danger { background: rgba(231, 76, 60, 0.1); border-color: var(--rpd-danger); color: var(--rpd-danger-dark); }
.rpd-alert-warning { background: rgba(243, 156, 18, 0.1); border-color: var(--rpd-warning); color: var(--rpd-warning-dark); }
.rpd-alert-info { background: rgba(27, 97, 146, 0.1); border-color: var(--rpd-blue); color: var(--rpd-blue-dark); }

/* ============================================================
   18. LOADING STATES
   ============================================================ */

.rpd-skeleton {
    background: linear-gradient(90deg, var(--rpd-bg-hover) 25%, var(--rpd-border-light) 50%, var(--rpd-bg-hover) 75%);
    background-size: 200% 100%;
    animation: rpd-shimmer 1.5s infinite;
    border-radius: var(--rpd-radius-sm);
}

.rpd-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--rpd-border);
    border-top-color: var(--rpd-green);
    border-radius: 50%;
    animation: rpd-spin 0.8s linear infinite;
    display: inline-block;
}

.rpd-spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.rpd-spinner-lg { width: 48px; height: 48px; border-width: 4px; }

/* ============================================================
   19. UTILITY CLASSES
   ============================================================ */

/* Text */
.rpd-text-green { color: var(--rpd-green) !important; }
.rpd-text-blue { color: var(--rpd-blue) !important; }
.rpd-text-red { color: var(--rpd-danger) !important; }
.rpd-text-orange { color: var(--rpd-warning) !important; }
.rpd-text-muted { color: var(--rpd-text-muted) !important; }
.rpd-text-brand { color: var(--rpd-green) !important; font-weight: 700; }

/* Background */
.rpd-bg-blue { background: var(--rpd-gradient-blue) !important; color: white !important; }
.rpd-bg-green { background: var(--rpd-gradient-green) !important; color: white !important; }

/* Glow text */
.rpd-glow {
    color: var(--rpd-green);
    text-shadow: 0 0 10px rgba(51, 204, 51, 0.5);
}

/* Truncate */
.rpd-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Clickable card */
.rpd-clickable { cursor: pointer; }

/* ============================================================
   20. ANIMATIONS
   ============================================================ */

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

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

@keyframes rpd-shimmer {
    to { background-position: -200% 0; }
}

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

.rpd-fade-in {
    animation: rpd-fadeIn 0.4s ease-out both;
}

/* Staggered fade-in for card grids */
.rpd-fade-in:nth-child(1) { animation-delay: 0s; }
.rpd-fade-in:nth-child(2) { animation-delay: 0.05s; }
.rpd-fade-in:nth-child(3) { animation-delay: 0.1s; }
.rpd-fade-in:nth-child(4) { animation-delay: 0.15s; }
.rpd-fade-in:nth-child(5) { animation-delay: 0.2s; }
.rpd-fade-in:nth-child(6) { animation-delay: 0.25s; }

/* ============================================================
   21. PRINT STYLES
   ============================================================ */

@media print {
    .rpd-header, .rpd-sidebar, .rpd-dark-toggle { display: none !important; }
    .rpd-sidebar + .rpd-content { margin-left: 0 !important; }
    .rpd-card { box-shadow: none !important; border: 1px solid #ddd !important; break-inside: avoid; }
    body, .rpd-ui { background: white !important; color: black !important; }
}