/* CropPredict - Modern Agricultural Theme Styles */

:root {
    /* Primary Colors - Agricultural greens */
    --primary: #2d6a4f;
    --primary-dark: #1b4332;
    --primary-light: #52b788;
    
    /* Secondary Colors - Earth tones */
    --secondary: #b7871f;
    --secondary-dark: #8b6914;
    --secondary-light: #d4a843;
    
    /* Neutral Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-light: #adb5bd;
    
    /* Status Colors */
    --success: #52b788;
    --warning: #ffc107;
    --error: #dc3545;
    --info: #0dcaf0;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.2;
    color: var(--primary-dark);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-sm {
    max-width: 600px;
}

/* Navigation */
.navbar {
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.navbar-brand:hover {
    color: var(--secondary-light);
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.navbar-nav a {
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background 0.3s;
}

.navbar-nav a:hover {
    background: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

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

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

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

.btn-secondary:hover {
    background: var(--secondary-dark);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.card-header {
    border-bottom: 2px solid var(--bg-tertiary);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.card-title {
    margin: 0;
    color: var(--primary-dark);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    transition: border-color 0.3s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-error {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-help {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Alerts */
.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background: #d1f2eb;
    color: #0f5132;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #f8d7da;
    color: #842029;
    border-left: 4px solid var(--error);
}

.alert-info {
    background: #cff4fc;
    color: #055160;
    border-left: 4px solid var(--info);
}

.alert-warning {
    background: #fff3cd;
    color: #664d03;
    border-left: 4px solid var(--warning);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Progress Bar */
.progress {
    height: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--success), var(--primary-light));
    transition: width 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table th,
.table td {
    padding: var(--spacing-sm);
    text-align: left;
}

.table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--primary-dark);
}

.table tbody tr:hover {
    background: var(--bg-secondary);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 1rem;
}

.badge-success {
    background: var(--success);
    color: white;
}

.badge-warning {
    background: var(--warning);
    color: var(--text-primary);
}

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

/* Loading Spinner */
.spinner {
    border: 3px solid var(--bg-tertiary);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-lg) auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.hidden { display: none; }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .navbar-nav {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-value {
        font-size: 2rem;
    }
}