:root {
    /* PlantLogic Color System */
    --bg-color: #0b0f19;
    --bg-void: #070a12;
    --bg-main: #0b0f19;
    --bg-panel: #111827;
    --card-bg: rgba(17, 24, 39, 0.75);
    --bg-card: rgba(17, 24, 39, 0.85);
    --bg-card-alt: #162032;
    --bg-hover: #1f2d45;
    --bg-active: #2a3c5a;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-bright: rgba(255, 255, 255, 0.15);
    --border-focus: #10b981;

    --text-main: #f3f4f6;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --text-accent: #10b981;

    /* PlantLogic Emerald Primary Palette */
    --primary: #10b981;
    --primary-hover: #059669;
    --color-primary: #10b981;
    --color-primary-hover: #059669;
    
    --color-emerald: #10b981;
    --color-emerald-glow: rgba(16, 185, 129, 0.35);
    --color-cyan: #06b6d4;
    --color-cyan-glow: rgba(6, 182, 212, 0.35);
    --color-success: #10b981;
    --color-success-glow: rgba(16, 185, 129, 0.35);
    --color-warning: #f59e0b;
    --color-warning-glow: rgba(245, 158, 11, 0.35);
    --color-danger: #ef4444;
    --color-danger-glow: rgba(239, 68, 68, 0.35);
    --color-purple: #8b5cf6;

    /* PlantLogic Typography — Outfit as Primary Brand & UI Font */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-brand: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --header-height: 52px;
    --bottom-panel-height: 220px;
    --palette-width: 250px;
    --sidebar-width: 340px;

    /* PlantLogic Shadows & Smooth Glassmorphic Glows */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
    --shadow-emerald: 0 0 20px rgba(16, 185, 129, 0.35);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.37);
}

/* ==========================================================
   STRICT SQUARED INDUSTRIAL GEOMETRY (NO BORDER RADIUS)
   ========================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border-radius: 0px !important;
}

body, button, input, select, textarea, optgroup {
    font-family: var(--font-sans);
}

/* Ensure FontAwesome font-family is never overridden */
i.fa-solid, i.fa-regular, i.fa-brands, i.fa, i.fas, i.far, i.fab, [class*="fa-"] {
    font-family: "Font Awesome 6 Free", "FontAwesome" !important;
    font-style: normal;
}
.fa-brands, [class*="fa-brands"] {
    font-family: "Font Awesome 6 Brands", "FontAwesome" !important;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-void);
    border: 1px solid var(--border-subtle);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid var(--border-color);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(16, 185, 129, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(6, 182, 212, 0.04) 0%, transparent 40%),
        linear-gradient(rgba(11, 15, 25, 0.95), rgba(11, 15, 25, 0.95));
    color: var(--text-main);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    user-select: none;
    -webkit-user-select: none;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================
   TOP APPLICATION HEADER (PLANT LOGIC THEME)
   ========================================================== */
.nf-header {
    height: var(--header-height);
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.nf-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, #10b981 0%, #059669 40%, rgba(16, 185, 129, 0.2) 80%, transparent 100%);
}

.nf-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-brand);
    font-weight: 700;
    font-size: 18px;
    letter-spacing: -0.5px;
    color: #fff;
}

.nf-brand-icon {
    font-size: 20px;
    color: var(--primary);
    filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.5));
    transition: transform 0.25s ease, filter 0.25s ease, color 0.25s ease;
}

.nf-brand:hover .nf-brand-icon {
    transform: scale(1.12);
    color: #34d399;
    filter: drop-shadow(0 0 12px rgba(16, 185, 129, 0.85));
}

.nf-brand span.logo-highlight {
    color: var(--primary);
}

.nf-brand-tag {
    font-size: 11px;
    font-family: var(--font-brand);
    font-weight: 600;
    padding: 2px 8px;
    background: rgba(16, 185, 129, 0.12);
    color: var(--primary);
    border: 1px solid rgba(16, 185, 129, 0.3);
    letter-spacing: 0.5px;
}

.nf-header-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 100%;
}

.nf-nav-tab {
    height: 100%;
    padding: 0 16px;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nf-nav-tab:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.04);
}

.nf-nav-tab.active {
    color: #fff;
    background: rgba(16, 185, 129, 0.08);
    border-bottom: 2px solid var(--primary);
}

.nf-nav-tab.active i {
    color: var(--primary);
    filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.5));
}

.nf-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nf-runtime-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-family: var(--font-mono);
    padding: 5px 12px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--primary);
    font-weight: 600;
}

.nf-runtime-dot {
    width: 8px;
    height: 8px;
    background-color: var(--primary);
    box-shadow: 0 0 10px var(--primary);
    animation: plantPulse 1.5s infinite ease-in-out;
}

@keyframes plantPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.35; transform: scale(0.85); }
}

/* ==========================================================
   BUTTONS (PLANT LOGIC EMERALD & GLASS THEME)
   ========================================================== */
.nf-btn {
    padding: 8px 18px;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    outline: none;
}

.nf-btn:hover {
    transform: translateY(-1px);
}

.nf-btn:active {
    transform: translateY(1px);
}

.nf-btn-primary, .nf-btn-cyan {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 600;
}

.nf-btn-primary:hover, .nf-btn-cyan:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

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

.nf-btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.nf-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.nf-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-bright);
    color: #fff;
}

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

.nf-btn-success:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}

.nf-btn-subtle {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.nf-btn-subtle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-bright);
    color: #fff;
}

.nf-btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.nf-btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-bright);
    color: #fff;
}

/* ==========================================================
   GLOBAL ALARM BANNER
   ========================================================== */
.nf-alarm-banner {
    height: 36px;
    background: rgba(239, 68, 68, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 99;
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

.nf-alarm-banner.hidden {
    display: none;
}

/* ==========================================================
   MAIN WORKSPACE CONTAINER
   ========================================================== */
.nf-workspace {
    display: flex;
    height: calc(100vh - var(--header-height));
    width: 100vw;
    position: relative;
    background-color: var(--bg-color);
}

.nf-view-container {
    flex: 1;
    display: none;
    height: 100%;
    overflow: hidden;
    position: relative;
    animation: plantFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nf-view-container.active {
    display: flex;
}

@keyframes plantFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================
   FLOW EDITOR VIEW
   ========================================================== */
.nf-flow-layout {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
}

.nf-flow-tabs-bar {
    height: 38px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-end;
    padding: 0 10px;
    gap: 4px;
    overflow-x: auto;
    z-index: 15;
}

.nf-flow-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-bottom: none;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
}

.nf-flow-tab:hover {
    background-color: rgba(255, 255, 255, 0.07);
    color: var(--text-main);
}

.nf-flow-tab.active {
    background-color: var(--bg-main);
    color: #fff;
    border-top: 2px solid var(--primary);
    border-left-color: var(--border-color);
    border-right-color: var(--border-color);
}

.nf-flow-tab-title {
    cursor: pointer;
}

.nf-flow-tab-close {
    font-size: 11px;
    color: var(--text-muted);
    border: none;
    background: none;
    cursor: pointer;
    padding: 2px 4px;
    transition: all 0.15s ease;
}

.nf-flow-tab-close:hover {
    color: #fff;
    background: var(--color-danger);
}

.nf-flow-tab-add {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background-color: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 4px;
    transition: all 0.15s ease;
}

.nf-flow-tab-add:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
    color: var(--primary);
}

.nf-flow-main {
    display: flex;
    flex: 1;
    height: calc(100% - var(--bottom-panel-height));
    position: relative;
}

/* Left Node Palette */
.nf-palette {
    width: var(--palette-width);
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 10;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

.nf-palette-search {
    padding: 12px;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
}

.nf-input-search {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 13px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    outline: none;
    transition: all 0.2s ease;
}

.nf-input-search:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.nf-palette-category {
    padding: 10px 14px;
    font-family: var(--font-brand);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    background: rgba(0, 0, 0, 0.25);
    border-bottom: 1px solid var(--border-subtle);
    border-left: 3px solid var(--primary);
}

.nf-palette-list {
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nf-palette-node {
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary);
    font-size: 13px;
    font-weight: 600;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.15s ease;
}

.nf-palette-node:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(3px);
    border-color: var(--primary);
    color: #fff;
}

/* Flow Canvas */
.nf-canvas-container {
    flex: 1;
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(circle, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
    background-size: 20px 20px;
    position: relative;
    overflow: hidden;
    cursor: crosshair;
}

.nf-canvas-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

/* Flow Node in Canvas */
.nf-node {
    position: absolute;
    width: 200px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    cursor: move;
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.nf-node:hover {
    border-color: var(--border-bright);
    box-shadow: var(--shadow-lg);
}

.nf-node.selected {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.4), 0 10px 30px rgba(0, 0, 0, 0.6);
}

.nf-node-header {
    padding: 8px 12px;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.3);
}

.nf-node-body {
    padding: 8px 12px;
    font-size: 12px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    display: flex;
    flex-direction: column;
    gap: 4px;
    background-color: var(--bg-main);
}

/* Node Status Row */
.nf-node-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px;
    background: var(--bg-void);
    border: 1px solid var(--border-subtle);
    margin-top: 3px;
    font-family: var(--font-mono);
}

.nf-node-status-label {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 700;
}

.nf-node-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-family: var(--font-mono);
    font-weight: 800;
    letter-spacing: 0.5px;
}

.nf-node-status-badge.online {
    color: #10b981;
}

.nf-node-status-badge.offline {
    color: #ef4444;
}

.nf-node-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
}

.nf-node-status-badge.online .nf-node-status-dot {
    background-color: #10b981;
    box-shadow: 0 0 8px #10b981;
    animation: plantPulse 1.4s infinite ease-in-out;
}

.nf-node-status-badge.offline .nf-node-status-dot {
    background-color: #ef4444;
    box-shadow: 0 0 8px #ef4444;
}

.nf-node-val-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px;
    background: var(--bg-void);
    border: 1px solid var(--border-subtle);
    margin-top: 2px;
    font-family: var(--font-mono);
}

.nf-node-val-label {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 700;
}

.nf-node-val-text {
    font-size: 12px;
    font-weight: 800;
    color: var(--color-cyan);
    letter-spacing: 0.5px;
    text-shadow: 0 0 8px rgba(6, 182, 212, 0.3);
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nf-node-val-text.active {
    color: #10b981;
    text-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}

.nf-node-val-text.paused {
    color: var(--text-muted);
    text-shadow: none;
}

.nf-node-port {
    width: 12px;
    height: 12px;
    background-color: var(--bg-panel);
    border: 2px solid var(--text-muted);
    position: absolute;
    cursor: crosshair;
    transition: all 0.15s ease;
    z-index: 10;
}

.nf-node-port:hover {
    border-color: var(--primary);
    background-color: var(--primary);
    transform: translateY(-50%) scale(1.3);
    box-shadow: 0 0 10px var(--primary);
}

.nf-node-port.input {
    left: -7px;
    top: 50%;
    transform: translateY(-50%);
}

.nf-node-port.output {
    right: -7px;
    top: 50%;
    transform: translateY(-50%);
}

/* Bottom Debug / Runtime Panel */
.nf-bottom-panel {
    height: var(--bottom-panel-height);
    background-color: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 10;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}

.nf-bottom-tabs {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
}

.nf-bottom-tab {
    padding: 9px 20px;
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    border: none;
    border-right: 1px solid var(--border-color);
    background: transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.nf-bottom-tab:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.03);
}

.nf-bottom-tab.active {
    color: #fff;
    background-color: var(--bg-panel);
    border-top: 2px solid var(--primary);
}

.nf-bottom-content {
    flex: 1;
    padding: 12px 16px;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 12px;
}

/* ==========================================================
   HMI DASHBOARD VIEW
   ========================================================== */
.nf-hmi-toolbar {
    height: 48px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 20;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.nf-hmi-tools {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nf-hmi-tool-chip {
    padding: 7px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    font-family: var(--font-brand);
    font-size: 12px;
    font-weight: 600;
    cursor: grab;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.nf-hmi-tool-chip:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
}

.nf-hmi-container {
    flex: 1;
    background-color: var(--bg-void);
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    position: relative;
    overflow: auto;
    padding: 24px;
    transition: background-image 0.2s ease;
}

.nf-hmi-container.no-grid {
    background-image: none !important;
}

.nf-hmi-widget {
    position: absolute;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    padding: 12px;
    box-shadow: var(--shadow-card);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
}

.nf-hmi-widget:hover {
    border-color: var(--border-bright);
}

.nf-hmi-widget.editable {
    border: 1px dashed rgba(16, 185, 129, 0.7);
    box-shadow: var(--shadow-lg);
}

/* HMI Interactive Resize Handles */
.nf-hmi-resize-handle {
    position: absolute;
    z-index: 20;
    transition: background-color 0.15s ease, opacity 0.15s ease;
}

.nf-hmi-resize-handle.handle-se {
    right: 0px;
    bottom: 0px;
    width: 14px;
    height: 14px;
    cursor: se-resize;
    background: linear-gradient(135deg, transparent 40%, rgba(16, 185, 129, 0.7) 40%, rgba(6, 182, 212, 0.95) 100%);
}

.nf-hmi-resize-handle.handle-e {
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 28px;
    cursor: e-resize;
    background: rgba(16, 185, 129, 0.5);
}

.nf-hmi-resize-handle.handle-s {
    bottom: 0px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 5px;
    cursor: s-resize;
    background: rgba(16, 185, 129, 0.5);
}

.nf-hmi-resize-handle:hover {
    background: var(--color-cyan) !important;
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.8);
}

.nf-hmi-title {
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 8px;
}

/* ==========================================================
   DATA TABLES (PLANT LOGIC THEME WITH SEARCH & PAGINATION)
   ========================================================== */
.nf-table-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.nf-table-toolbar {
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.nf-table-search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 0 12px;
    gap: 10px;
    min-width: 320px;
    transition: all 0.2s ease;
}

.nf-table-search-box input {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 10px 0;
    width: 100%;
    outline: none;
}

.nf-table-search-box i {
    color: var(--text-muted);
}

.nf-table-search-box:focus-within {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.nf-table-filters {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nf-select-filter {
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nf-select-filter:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
}

.nf-data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    text-align: left;
}

.nf-data-table thead {
    background: rgba(0, 0, 0, 0.3);
}

.nf-data-table th {
    padding: 14px 18px;
    font-family: var(--font-brand);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-subtle);
    user-select: none;
}

.nf-data-table th.sortable {
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.nf-data-table th.sortable:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary);
}

.nf-data-table td {
    padding: 13px 18px;
    border-bottom: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
    color: var(--text-main);
    transition: background 0.1s ease;
}

.nf-data-table tbody tr {
    background: transparent;
    transition: background 0.15s ease;
}

.nf-data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.04) !important;
}

/* Pagination Bar */
.nf-pagination-bar {
    padding: 14px 20px;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-brand);
    font-size: 13px;
    color: var(--text-muted);
}

.nf-pagination-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nf-page-btn {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nf-page-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

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

.nf-page-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

/* Badges */
.nf-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-family: var(--font-brand);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: 1px solid transparent;
}

.nf-badge-success {
    background: rgba(16, 185, 129, 0.12);
    color: var(--primary);
    border-color: rgba(16, 185, 129, 0.3);
}

.nf-badge-danger {
    background: rgba(239, 68, 68, 0.12);
    color: var(--color-danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.nf-badge-warning {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-warning);
    border-color: rgba(245, 158, 11, 0.3);
}

.nf-badge-info {
    background: rgba(6, 182, 212, 0.12);
    color: var(--color-cyan);
    border-color: rgba(6, 182, 212, 0.3);
}

/* ==========================================================
   MODAL DIALOGS & FORMS (PLANT LOGIC GLASS STYLE)
   ========================================================== */
.nf-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: plantFadeIn 0.2s ease-out;
}

.nf-modal {
    width: 520px;
    max-width: 92vw;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    animation: plantSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes plantSlideUp {
    from { transform: translateY(24px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.nf-modal-header {
    padding: 16px 22px;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-brand);
    font-weight: 700;
    font-size: 17px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #fff;
}

.nf-modal-body {
    padding: 24px 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-height: 70vh;
    overflow-y: auto;
    background-color: var(--bg-panel);
}

.nf-modal-footer {
    padding: 16px 22px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background-color: rgba(0, 0, 0, 0.2);
}

.nf-form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nf-form-group label {
    font-family: var(--font-brand);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.nf-form-control {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 14px;
    background: #0f172a;
    border: 1px solid var(--border-color);
    color: #f8fafc;
    outline: none;
    transition: all 0.25s ease;
}

.nf-form-control:focus {
    border-color: var(--primary);
    background: #131d35;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

select.nf-form-control,
select {
    background-color: #0f172a !important;
    color: #f8fafc !important;
    cursor: pointer;
}

select.nf-form-control option,
select option {
    background-color: #0b0f19 !important;
    color: #f1f5f9 !important;
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 14px;
}

select.nf-form-control option:hover,
select.nf-form-control option:focus,
select.nf-form-control option:checked,
select option:hover,
select option:focus,
select option:checked {
    background-color: #10b981 !important;
    color: #ffffff !important;
}

select.nf-form-control optgroup,
select optgroup {
    background-color: #070a12 !important;
    color: var(--color-cyan) !important;
    font-weight: 700;
}

/* ==========================================================
   TOAST NOTIFICATION SYSTEM
   ========================================================== */
#nf-toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2000;
    pointer-events: none;
}

.nf-toast {
    pointer-events: auto;
    padding: 14px 20px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: var(--font-brand);
    font-size: 13.5px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: plantToastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    min-width: 300px;
}

.nf-toast-success {
    border-left: 4px solid var(--primary);
}
.nf-toast-danger {
    border-left: 4px solid var(--color-danger);
}
.nf-toast-info {
    border-left: 4px solid var(--color-cyan);
}

@keyframes plantToastIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes plantToastOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(120%); opacity: 0; }
}

/* ==========================================================
   SETTINGS VIEW STYLING
   ========================================================== */
.nf-settings-layout {
    display: flex;
    width: 100%;
    height: 100%;
    background-color: var(--bg-void);
}

.nf-settings-sidebar {
    width: 260px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
}

.nf-settings-sidebar-header {
    padding: 0 20px 16px 20px;
    font-family: var(--font-brand);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nf-settings-tabs-list {
    display: flex;
    flex-direction: column;
    margin-top: 12px;
}

.nf-settings-tab {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    font-family: var(--font-brand);
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.nf-settings-tab:hover {
    background-color: rgba(255, 255, 255, 0.04);
    color: #fff;
}

.nf-settings-tab.active {
    background-color: rgba(16, 185, 129, 0.08);
    color: #fff;
    border-left-color: var(--primary);
}

.nf-settings-tab i {
    font-size: 15px;
    width: 20px;
    text-align: center;
    color: var(--color-cyan);
}

.nf-settings-content-wrapper {
    flex: 1;
    overflow-y: auto;
    padding: 30px 40px;
    background-color: var(--bg-void);
}

.nf-settings-pane {
    display: none;
    max-width: 900px;
    animation: plantFadeIn 0.25s ease-out;
}

.nf-settings-pane.active {
    display: block;
}

.nf-settings-pane-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nf-settings-pane-title {
    font-family: var(--font-brand);
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 0.3px;
    margin: 0 0 4px 0;
}

.nf-settings-pane-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.nf-settings-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.nf-settings-card-title {
    font-family: var(--font-brand);
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 16px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}