/* KEL Agricultural System Theme */
/* Knowledge-Driven Cultivation | Ecological Intelligence | Logistics Optimization */

:root {
    /* Agricultural Color Palette */
    --kel-primary: #2E7D32;        /* Deep Green - Primary agricultural */
    --kel-secondary: #4CAF50;       /* Fresh Green - Secondary agricultural */
    --kel-accent: #8BC34A;          /* Light Green - Accent */
    --kel-earth: #795548;           /* Earth Brown - Soil/ground */
    --kel-sky: #2196F3;             /* Sky Blue - Weather/water */
    --kel-sun: #FFC107;             /* Golden Yellow - Sunlight/harvest */
    --kel-harvest: #FF9800;         /* Orange - Harvest season */
    --kel-growth: #66BB6A;          /* Growth Green - Plant development */
    
    /* Neutral Colors */
    --kel-dark: #1B5E20;            /* Dark Green - Text/headers */
    --kel-light: #E8F5E9;           /* Light Green - Backgrounds */
    --kel-white: #FFFFFF;           /* Pure White - Cards/containers */
    --kel-gray: #757575;            /* Medium Gray - Secondary text */
    --kel-gray-light: #F5F5F5;      /* Light Gray - Subtle backgrounds */
    
    /* Status Colors */
    --kel-success: #4CAF50;         /* Success - Healthy crops */
    --kel-warning: #FF9800;         /* Warning - Attention needed */
    --kel-error: #F44336;           /* Error - Issues/problems */
    --kel-info: #2196F3;            /* Info - Informational */
    
    /* Typography */
    --kel-font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --kel-font-mono: 'Courier New', monospace;
    --kel-font-size-xs: 0.75rem;
    --kel-font-size-sm: 0.875rem;
    --kel-font-size-base: 1rem;
    --kel-font-size-lg: 1.125rem;
    --kel-font-size-xl: 1.25rem;
    --kel-font-size-2xl: 1.5rem;
    --kel-font-size-3xl: 1.875rem;
    --kel-font-size-4xl: 2.25rem;
    
    /* Spacing */
    --kel-spacing-xs: 0.25rem;
    --kel-spacing-sm: 0.5rem;
    --kel-spacing-md: 1rem;
    --kel-spacing-lg: 1.5rem;
    --kel-spacing-xl: 2rem;
    --kel-spacing-2xl: 3rem;
    
    /* Border Radius */
    --kel-radius-sm: 0.25rem;
    --kel-radius-md: 0.5rem;
    --kel-radius-lg: 0.75rem;
    --kel-radius-xl: 1rem;
    
    /* Shadows */
    --kel-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --kel-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --kel-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --kel-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--kel-font-primary);
    background: linear-gradient(135deg, var(--kel-light) 0%, var(--kel-white) 100%);
    color: var(--kel-dark);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header Styles */
.kel-header {
    background: linear-gradient(135deg, var(--kel-primary) 0%, var(--kel-secondary) 100%);
    color: white;
    padding: var(--kel-spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.kel-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    opacity: 0.3;
}

.kel-header-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--kel-spacing-lg);
}

.kel-logo {
    font-size: var(--kel-font-size-4xl);
    font-weight: bold;
    margin-bottom: var(--kel-spacing-md);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.kel-subtitle {
    font-size: var(--kel-font-size-xl);
    opacity: 0.9;
    margin-bottom: var(--kel-spacing-lg);
}

.kel-tagline {
    font-size: var(--kel-font-size-lg);
    opacity: 0.8;
    font-style: italic;
}

/* Navigation */
.kel-nav {
    background: var(--kel-white);
    box-shadow: var(--kel-shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.kel-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--kel-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kel-nav-menu {
    display: flex;
    list-style: none;
    gap: var(--kel-spacing-xl);
}

.kel-nav-link {
    color: var(--kel-dark);
    text-decoration: none;
    padding: var(--kel-spacing-md) var(--kel-spacing-lg);
    border-radius: var(--kel-radius-md);
    transition: all 0.3s ease;
    font-weight: 500;
}

.kel-nav-link:hover {
    background: var(--kel-light);
    color: var(--kel-primary);
    transform: translateY(-2px);
}

/* Main Content */
.kel-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--kel-spacing-2xl) var(--kel-spacing-lg);
}

/* Cards */
.kel-card {
    background: var(--kel-white);
    border-radius: var(--kel-radius-xl);
    padding: var(--kel-spacing-xl);
    box-shadow: var(--kel-shadow-lg);
    margin-bottom: var(--kel-spacing-xl);
    transition: all 0.3s ease;
    border: 1px solid var(--kel-light);
}

.kel-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--kel-shadow-xl);
}

.kel-card-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--kel-spacing-lg);
}

.kel-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--kel-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--kel-spacing-md);
    font-size: var(--kel-font-size-xl);
}

.kel-card-title {
    font-size: var(--kel-font-size-2xl);
    color: var(--kel-dark);
    margin: 0;
}

.kel-card-subtitle {
    color: var(--kel-gray);
    font-size: var(--kel-font-size-base);
    margin-top: var(--kel-spacing-xs);
}

/* Zone Cards with specific colors */
.kel-zone-lab { background: linear-gradient(135deg, var(--kel-sky) 0%, var(--kel-info) 100%); }
.kel-zone-greenhouse { background: linear-gradient(135deg, var(--kel-growth) 0%, var(--kel-accent) 100%); }
.kel-zone-harvest { background: linear-gradient(135deg, var(--kel-harvest) 0%, var(--kel-warning) 100%); }
.kel-zone-processing { background: linear-gradient(135deg, var(--kel-earth) 0%, #8D6E63 100%); }
.kel-zone-factory { background: linear-gradient(135deg, var(--kel-gray) 0%, #616161 100%); }
.kel-zone-storage { background: linear-gradient(135deg, var(--kel-secondary) 0%, var(--kel-success) 100%); }

/* Grid Layouts */
.kel-grid {
    display: grid;
    gap: var(--kel-spacing-xl);
}

.kel-grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.kel-grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.kel-grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

/* Buttons */
.kel-btn {
    display: inline-block;
    padding: var(--kel-spacing-md) var(--kel-spacing-lg);
    border: none;
    border-radius: var(--kel-radius-md);
    font-size: var(--kel-font-size-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.kel-btn-primary {
    background: var(--kel-primary);
    color: white;
}

.kel-btn-primary:hover {
    background: var(--kel-dark);
    transform: translateY(-2px);
    box-shadow: var(--kel-shadow-md);
}

.kel-btn-secondary {
    background: var(--kel-secondary);
    color: white;
}

.kel-btn-accent {
    background: var(--kel-accent);
    color: var(--kel-dark);
}

/* Dashboard Styles */
.kel-dashboard {
    background: var(--kel-white);
    border-radius: var(--kel-radius-xl);
    padding: var(--kel-spacing-xl);
    box-shadow: var(--kel-shadow-lg);
    margin-bottom: var(--kel-spacing-xl);
}

.kel-metric {
    text-align: center;
    padding: var(--kel-spacing-lg);
    border-radius: var(--kel-radius-lg);
    background: var(--kel-light);
}

.kel-metric-value {
    font-size: var(--kel-font-size-3xl);
    font-weight: bold;
    color: var(--kel-primary);
    display: block;
}

.kel-metric-label {
    color: var(--kel-gray);
    font-size: var(--kel-font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Agent Visualization */
.kel-agent-node {
    background: var(--kel-white);
    border: 2px solid var(--kel-secondary);
    border-radius: var(--kel-radius-lg);
    padding: var(--kel-spacing-md);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.kel-agent-node:hover {
    border-color: var(--kel-primary);
    box-shadow: var(--kel-shadow-md);
    transform: scale(1.05);
}

.kel-agent-status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: var(--kel-spacing-xs);
}

.kel-status-active { background: var(--kel-success); }
.kel-status-idle { background: var(--kel-warning); }
.kel-status-offline { background: var(--kel-error); }

/* Progress Bars */
.kel-progress {
    background: var(--kel-gray-light);
    border-radius: var(--kel-radius-sm);
    overflow: hidden;
    height: 8px;
    margin: var(--kel-spacing-sm) 0;
}

.kel-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--kel-primary) 0%, var(--kel-secondary) 100%);
    transition: width 0.3s ease;
}

/* Forms and Inputs */
.kel-form-group {
    margin-bottom: var(--kel-spacing-lg);
}

.kel-form-label {
    display: block;
    margin-bottom: var(--kel-spacing-sm);
    font-weight: 500;
    color: var(--kel-dark);
}

.kel-form-control {
    width: 100%;
    padding: var(--kel-spacing-md);
    border: 2px solid var(--kel-light);
    border-radius: var(--kel-radius-md);
    font-size: var(--kel-font-size-base);
    transition: border-color 0.3s ease;
}

.kel-form-control:focus {
    outline: none;
    border-color: var(--kel-primary);
}

/* Footer */
.kel-footer {
    background: var(--kel-dark);
    color: white;
    padding: var(--kel-spacing-2xl) 0;
    text-align: center;
    margin-top: var(--kel-spacing-2xl);
}

/* Responsive Design */
@media (max-width: 768px) {
    .kel-nav-menu {
        flex-direction: column;
        gap: var(--kel-spacing-md);
    }
    
    .kel-grid-2, .kel-grid-3, .kel-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .kel-header {
        padding: var(--kel-spacing-lg) 0;
    }
    
    .kel-logo {
        font-size: var(--kel-font-size-3xl);
    }
}

/* Animations */
@keyframes kel-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.kel-animated {
    animation: kel-pulse 2s infinite;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--kel-light);
}

::-webkit-scrollbar-thumb {
    background: var(--kel-primary);
    border-radius: var(--kel-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--kel-dark);
}

/* Ported from js/kel-agricultural.js's runtime-injected modalCSS string, moved into
   the real stylesheet since the React port uses conditional rendering instead of
   dynamic style injection for the agent-detail modal. */
.kel-modal {
    display: flex;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.4);
    align-items: center;
    justify-content: center;
}
.kel-modal-content {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    position: relative;
}
.kel-modal-close {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}
.kel-modal-close:hover {
    color: #333;
}