/**
 * NativeBPM Design System (Analogue of Supabase Design System)
 * Version: 1.0.0
 * Architecture: CSS Custom Properties + Semantic Component Classes
 */

:root {
    /* Color Palette - Obsidian Dark */
    --nb-bg-base: #060606;
    --nb-bg-surface: #0c0d0e;
    --nb-bg-card: #141517;
    --nb-bg-card-hover: #1c1d21;
    --nb-bg-elevated: #24252a;

    /* Borders */
    --nb-border-subtle: rgba(255, 255, 255, 0.06);
    --nb-border-default: rgba(255, 255, 255, 0.10);
    --nb-border-hover: rgba(255, 255, 255, 0.18);
    --nb-border-active: rgba(255, 255, 255, 0.30);
    --nb-border-brand: rgba(16, 185, 129, 0.35);

    /* Brand / Supabase Emerald Accent */
    --nb-brand: #10b981;
    --nb-brand-hover: #059669;
    --nb-brand-active: #047857;
    --nb-brand-light: #34d399;
    --nb-brand-glow: rgba(16, 185, 129, 0.18);
    --nb-brand-surface: rgba(16, 185, 129, 0.08);

    /* Accent Palette */
    --nb-accent-purple: #8b5cf6;
    --nb-accent-purple-glow: rgba(139, 92, 246, 0.2);
    --nb-accent-blue: #3b82f6;
    --nb-accent-blue-glow: rgba(59, 130, 246, 0.2);
    --nb-accent-amber: #f59e0b;
    --nb-accent-amber-glow: rgba(245, 158, 11, 0.2);
    --nb-accent-rose: #ef4444;
    --nb-accent-rose-glow: rgba(239, 68, 68, 0.2);

    /* Text Colors */
    --nb-text-main: #ededed;
    --nb-text-muted: #9ca3af;
    --nb-text-dim: #6b7280;
    --nb-text-inverted: #060606;

    /* Fonts: Soft (Manrope) & Code (JetBrains Mono) */
    --nb-font-soft: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --nb-font-code: 'JetBrains Mono', 'Fira Code', Menlo, monospace;
    --nb-font-headers: var(--nb-font-soft);
    --nb-font-body: var(--nb-font-soft);

    /* Radii */
    --nb-radius-sm: 6px;
    --nb-radius-md: 10px;
    --nb-radius-lg: 14px;
    --nb-radius-xl: 20px;
    --nb-radius-full: 9999px;

    /* Shadows & Glows */
    --nb-shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
    --nb-shadow-dropdown: 0 10px 30px -5px rgba(0, 0, 0, 0.7);
    --nb-glow-brand: 0 0 24px -4px var(--nb-brand-glow);
    --nb-glow-purple: 0 0 24px -4px var(--nb-accent-purple-glow);
}

/* ==========================================================================
   Typography Modes: Soft (Manrope) & Code Style (JetBrains Mono)
   ========================================================================== */

.font-mode-soft {
    --nb-font-headers: var(--nb-font-soft);
    --nb-font-body: var(--nb-font-soft);
}

.font-mode-code {
    --nb-font-headers: var(--nb-font-code);
    --nb-font-body: var(--nb-font-code);
}

.font-mode-code .nb-btn,
.font-mode-code .nb-card-title,
.font-mode-code h1,
.font-mode-code h2,
.font-mode-code h3,
.font-mode-code h4 {
    letter-spacing: -0.025em;
    font-family: var(--nb-font-code) !important;
}

.nb-font-soft {
    font-family: var(--nb-font-soft);
    letter-spacing: -0.015em;
}

.nb-font-code {
    font-family: var(--nb-font-code);
    letter-spacing: -0.02em;
}

/* Global Font Antialiasing & Smoothing */
body, html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ==========================================================================
   Supabase-Style Background Grid Lines
   ========================================================================== */

.nb-grid-bg {
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

.nb-grid-dots {
    background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: 24px 24px;
}

.nb-grid-line-col {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--nb-border-subtle);
    pointer-events: none;
    z-index: 1;
}

.nb-grid-line-row {
    width: 100%;
    height: 1px;
    background-color: var(--nb-border-subtle);
    pointer-events: none;
}

/* Radial spotlight effect */
.nb-spotlight {
    position: relative;
}
.nb-spotlight::before {
    content: '';
    position: absolute;
    top: -150px;
    left: 50%;
    transform: translateX(-50%);
    width: 700px;
    height: 400px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, rgba(139, 92, 246, 0.04) 50%, transparent 80%);
    pointer-events: none;
    z-index: 0;
}

/* ==========================================================================
   Buttons (.nb-btn)
   ========================================================================== */

.nb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--nb-font-body);
    font-weight: 500;
    line-height: 1;
    border-radius: var(--nb-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    text-decoration: none;
}

.nb-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--nb-bg-base), 0 0 0 4px var(--nb-brand);
}

/* Sizes */
.nb-btn-xs {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    border-radius: var(--nb-radius-sm);
}
.nb-btn-sm {
    padding: 0.45rem 0.85rem;
    font-size: 0.8125rem;
    border-radius: var(--nb-radius-sm);
}
.nb-btn-md {
    padding: 0.6rem 1.15rem;
    font-size: 0.875rem;
    border-radius: var(--nb-radius-md);
}
.nb-btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--nb-radius-md);
}

/* Variants */
.nb-btn-primary {
    background-color: var(--nb-brand);
    color: #041d11;
    font-weight: 600;
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.nb-btn-primary:hover {
    background-color: var(--nb-brand-light);
    box-shadow: 0 0 16px var(--nb-brand-glow);
    transform: translateY(-1px);
}
.nb-btn-primary:active {
    background-color: var(--nb-brand-hover);
    transform: translateY(0);
}

.nb-btn-secondary {
    background-color: var(--nb-bg-card);
    color: var(--nb-text-main);
    border-color: var(--nb-border-default);
}
.nb-btn-secondary:hover {
    background-color: var(--nb-bg-card-hover);
    border-color: var(--nb-border-hover);
    color: #ffffff;
}
.nb-btn-secondary:active {
    background-color: var(--nb-bg-surface);
}

.nb-btn-outline {
    background-color: transparent;
    color: var(--nb-text-main);
    border-color: var(--nb-border-default);
}
.nb-btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--nb-border-hover);
    color: #ffffff;
}

.nb-btn-ghost {
    background-color: transparent;
    color: var(--nb-text-muted);
    border-color: transparent;
}
.nb-btn-ghost:hover {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--nb-text-main);
}

.nb-btn-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.3);
}
.nb-btn-danger:hover {
    background-color: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
    color: #ffffff;
}

.nb-btn-glow {
    position: relative;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(139, 92, 246, 0.2));
    border: 1px solid var(--nb-border-brand);
    color: #ffffff;
    box-shadow: 0 0 20px -4px var(--nb-brand-glow);
}
.nb-btn-glow:hover {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.3), rgba(139, 92, 246, 0.3));
    border-color: var(--nb-brand);
    box-shadow: 0 0 28px -2px var(--nb-brand-glow);
}

.nb-btn:disabled, .nb-btn.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* Spinner inside button */
.nb-spinner {
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: nb-spin 0.75s linear infinite;
}

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

/* ==========================================================================
   Badges & Status Tags (.nb-badge)
   ========================================================================== */

.nb-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.2rem 0.55rem;
    font-size: 0.75rem;
    font-weight: 500;
    font-family: var(--nb-font-body);
    line-height: 1.2;
    border-radius: var(--nb-radius-full);
    border: 1px solid transparent;
    user-select: none;
    white-space: nowrap;
}

.nb-badge-sm {
    padding: 0.125rem 0.4rem;
    font-size: 0.6875rem;
}
.nb-badge-lg {
    padding: 0.25rem 0.75rem;
    font-size: 0.8125rem;
}

.nb-badge-emerald {
    background-color: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.25);
    color: #34d399;
}
.nb-badge-purple {
    background-color: rgba(139, 92, 246, 0.12);
    border-color: rgba(139, 92, 246, 0.25);
    color: #a78bfa;
}
.nb-badge-blue {
    background-color: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.25);
    color: #60a5fa;
}
.nb-badge-amber {
    background-color: rgba(245, 158, 11, 0.12);
    border-color: rgba(245, 158, 11, 0.25);
    color: #fbbf24;
}
.nb-badge-rose {
    background-color: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.25);
    color: #f87171;
}
.nb-badge-neutral {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: var(--nb-border-default);
    color: var(--nb-text-muted);
}

/* Status Dot with Pulse */
.nb-dot {
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    position: relative;
}
.nb-dot-emerald { background-color: var(--nb-brand); }
.nb-dot-purple { background-color: var(--nb-accent-purple); }
.nb-dot-amber { background-color: var(--nb-accent-amber); }
.nb-dot-rose { background-color: var(--nb-accent-rose); }

.nb-dot-pulse::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background-color: inherit;
    animation: nb-pulse-ring 1.8s cubic-bezier(0.24, 0, 0.38, 1) infinite;
}

@keyframes nb-pulse-ring {
    0% { transform: scale(0.9); opacity: 0.8; }
    70% { transform: scale(2.2); opacity: 0; }
    100% { transform: scale(2.2); opacity: 0; }
}

/* ==========================================================================
   Cards & Surfaces (.nb-card)
   ========================================================================== */

.nb-card {
    background-color: var(--nb-bg-card);
    border: 1px solid var(--nb-border-subtle);
    border-radius: var(--nb-radius-lg);
    padding: 1.5rem;
    position: relative;
    box-shadow: var(--nb-shadow-card);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nb-card-interactive {
    cursor: pointer;
}
.nb-card-interactive:hover {
    background-color: var(--nb-bg-card-hover);
    border-color: var(--nb-border-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px -4px rgba(0, 0, 0, 0.6);
}

.nb-card-glow {
    background: radial-gradient(800px circle at top center, rgba(16, 185, 129, 0.05), transparent 40%), var(--nb-bg-card);
    border-color: var(--nb-border-default);
}
.nb-card-glow:hover {
    border-color: var(--nb-border-brand);
    box-shadow: 0 0 30px -5px var(--nb-brand-glow);
}

.nb-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.nb-card-title {
    font-family: var(--nb-font-headers);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--nb-text-main);
}

.nb-card-description {
    font-size: 0.875rem;
    color: var(--nb-text-muted);
    line-height: 1.5;
}

/* Bento Grid */
.nb-bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1.25rem;
}

/* ==========================================================================
   Code Window Component (.nb-code-window)
   ========================================================================== */

.nb-code-window {
    background-color: #050608;
    border: 1px solid var(--nb-border-default);
    border-radius: var(--nb-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 12px 36px -6px rgba(0, 0, 0, 0.7);
    font-family: var(--nb-font-code);
}

.nb-code-header {
    background-color: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--nb-border-subtle);
    padding: 0.65rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
}

.nb-traffic-lights {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.nb-traffic-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.nb-traffic-red { background-color: rgba(239, 68, 68, 0.8); }
.nb-traffic-yellow { background-color: rgba(245, 158, 11, 0.8); }
.nb-traffic-green { background-color: rgba(16, 185, 129, 0.8); }

.nb-code-body {
    padding: 1.25rem;
    overflow-x: auto;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: #e5e7eb;
}

.nb-code-line {
    display: flex;
    align-items: flex-start;
}
.nb-line-number {
    width: 2.25rem;
    color: var(--nb-text-dim);
    user-select: none;
    flex-shrink: 0;
}

/* ==========================================================================
   Dual-Pane Showcase (.nb-dual-pane)
   ========================================================================== */

.nb-dual-pane {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    align-items: stretch;
}
@media (min-width: 1024px) {
    .nb-dual-pane {
        grid-template-columns: 1fr 1fr;
    }
}

.nb-bpmn-viewer-card {
    background-color: #050608;
    border: 1px solid var(--nb-border-default);
    border-radius: var(--nb-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 380px;
    box-shadow: 0 12px 36px -6px rgba(0, 0, 0, 0.7);
}

.nb-bpmn-viewer-header {
    background-color: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--nb-border-subtle);
    padding: 0.65rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--nb-font-code);
    font-size: 0.75rem;
}

/* ==========================================================================
   Form Controls (.nb-input, .nb-select, .nb-switch)
   ========================================================================== */

.nb-form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.nb-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--nb-text-main);
}

.nb-input, .nb-textarea, .nb-select {
    width: 100%;
    background-color: #08090a;
    border: 1px solid var(--nb-border-default);
    border-radius: var(--nb-radius-md);
    padding: 0.55rem 0.85rem;
    font-size: 0.875rem;
    font-family: var(--nb-font-body);
    color: var(--nb-text-main);
    transition: all 0.15s ease;
    outline: none;
}

.nb-input::placeholder, .nb-textarea::placeholder {
    color: var(--nb-text-dim);
}

.nb-input:hover, .nb-textarea:hover, .nb-select:hover {
    border-color: var(--nb-border-hover);
}

.nb-input:focus, .nb-textarea:focus, .nb-select:focus {
    border-color: var(--nb-brand);
    box-shadow: 0 0 0 3px var(--nb-brand-glow);
}

.nb-helper-text {
    font-size: 0.75rem;
    color: var(--nb-text-muted);
}

/* Switch */
.nb-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}
.nb-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.nb-switch-slider {
    position: absolute;
    inset: 0;
    background-color: rgba(255, 255, 255, 0.12);
    border: 1px solid var(--nb-border-default);
    border-radius: var(--nb-radius-full);
    transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.nb-switch-slider::before {
    position: absolute;
    content: '';
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: #ffffff;
    border-radius: 50%;
    transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.nb-switch input:checked + .nb-switch-slider {
    background-color: var(--nb-brand);
    border-color: var(--nb-brand);
}
.nb-switch input:checked + .nb-switch-slider::before {
    transform: translateX(20px);
    background-color: #041d11;
}

/* ==========================================================================
   Tabs & Navigation (.nb-tabs)
   ========================================================================== */

.nb-tabs-pills {
    display: inline-flex;
    align-items: center;
    background-color: #090a0c;
    padding: 0.25rem;
    border-radius: var(--nb-radius-md);
    border: 1px solid var(--nb-border-subtle);
    gap: 0.25rem;
}

.nb-tab-pill {
    padding: 0.4rem 0.85rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--nb-text-muted);
    border-radius: var(--nb-radius-sm);
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
    border: none;
    background: transparent;
}
.nb-tab-pill:hover {
    color: var(--nb-text-main);
}
.nb-tab-pill.is-active {
    background-color: var(--nb-bg-card-hover);
    color: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nb-tabs-underline {
    display: flex;
    border-bottom: 1px solid var(--nb-border-subtle);
    gap: 1.5rem;
}
.nb-tab-underline {
    padding: 0.75rem 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--nb-text-muted);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
}
.nb-tab-underline:hover {
    color: var(--nb-text-main);
}
.nb-tab-underline.is-active {
    color: var(--nb-brand);
    border-bottom-color: var(--nb-brand);
}

/* ==========================================================================
   Alerts & Callouts (.nb-alert)
   ========================================================================== */

.nb-alert {
    display: flex;
    align-items: flex-start;
    gap: 0.85rem;
    padding: 1rem 1.25rem;
    border-radius: var(--nb-radius-md);
    border: 1px solid transparent;
    font-size: 0.875rem;
    line-height: 1.5;
}

.nb-alert-info {
    background-color: rgba(59, 130, 246, 0.08);
    border-color: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}
.nb-alert-success {
    background-color: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}
.nb-alert-warning {
    background-color: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.2);
    color: #fcd34d;
}
.nb-alert-danger {
    background-color: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

/* ==========================================================================
   KPI & Metrics (.nb-metric-card)
   ========================================================================== */

.nb-metric-card {
    background-color: var(--nb-bg-card);
    border: 1px solid var(--nb-border-subtle);
    border-radius: var(--nb-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nb-metric-value {
    font-family: var(--nb-font-headers);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--nb-text-main);
    letter-spacing: -0.02em;
    line-height: 1;
}

.nb-metric-label {
    font-size: 0.8125rem;
    color: var(--nb-text-muted);
}

.nb-metric-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}
.nb-trend-up { color: var(--nb-brand); }
.nb-trend-down { color: var(--nb-accent-rose); }

/* ==========================================================================
   Data Table (.nb-table)
   ========================================================================== */

.nb-table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--nb-border-subtle);
    border-radius: var(--nb-radius-lg);
    background-color: var(--nb-bg-card);
}

.nb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
    text-align: left;
}

.nb-table th {
    padding: 0.75rem 1rem;
    background-color: #090a0c;
    border-bottom: 1px solid var(--nb-border-subtle);
    color: var(--nb-text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nb-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--nb-border-subtle);
    color: var(--nb-text-main);
}

.nb-table tbody tr:hover {
    background-color: var(--nb-bg-card-hover);
}