:root {
    --primary-green: #2E7D32;
    --primary-green-dark: #1B5E20;
    --primary-green-light: #4CAF50;
    --light-blue: #ADD8E6;
    --light-blue-dark: #87CEEB;
    --light-blue-light: #D4EFF7;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --dark-gray: #343A40;
    --border-color: #DEE2E6;
    --text-muted: #6C757D;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 5px 20px rgba(0,0,0,0.15);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--light-gray);
    color: var(--dark-gray);
    line-height: 1.6;
}

.navbar {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    padding: 0.75rem 1.5rem;
    box-shadow: var(--shadow);
}

.navbar-brand {
    color: var(--white) !important;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.5px;
}

.navbar-brand:hover {
    color: var(--light-blue) !important;
}

.nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 4px;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    background-color: rgba(255,255,255,0.15);
    color: var(--white) !important;
}

.sidebar {
    background: var(--white);
    min-height: calc(100vh - 60px);
    box-shadow: var(--shadow);
    padding: 1.5rem 0;
}

.sidebar .nav-link {
    color: var(--dark-gray) !important;
    padding: 0.75rem 1.5rem !important;
    border-left: 3px solid transparent;
    transition: var(--transition);
}

.sidebar .nav-link:hover {
    background-color: var(--light-blue-light);
    color: var(--primary-green) !important;
    border-left-color: var(--primary-green);
}

.sidebar .nav-link.active {
    background-color: var(--light-blue-light);
    color: var(--primary-green) !important;
    border-left-color: var(--primary-green);
    font-weight: 600;
}

.main-content {
    padding: 1.5rem;
}

.card {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius) var(--radius) 0 0 !important;
    padding: 1rem 1.25rem;
}

.card-header.bg-light-blue {
    background: linear-gradient(135deg, var(--light-blue), var(--light-blue-dark));
    color: var(--dark-gray);
}

.stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-green);
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-green-light), var(--primary-green));
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-light-blue {
    background: linear-gradient(135deg, var(--light-blue), var(--light-blue-dark));
    border: none;
    color: var(--dark-gray);
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn-light-blue:hover {
    background: linear-gradient(135deg, var(--light-blue-dark), var(--light-blue));
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    color: var(--dark-gray);
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background-color: var(--light-blue-light);
    border-bottom: 2px solid var(--primary-green);
    font-weight: 600;
    color: var(--primary-green-dark);
    padding: 0.85rem 1rem;
}

.table tbody td {
    padding: 0.85rem 1rem;
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: var(--light-blue-light);
}

.badge {
    padding: 0.4rem 0.75rem;
    font-weight: 500;
    border-radius: 20px;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 0.2rem rgba(46, 139, 87, 0.25);
}

.pagination .page-link {
    color: var(--primary-green);
    border: none;
    margin: 0 2px;
    border-radius: var(--radius);
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-green);
    border-color: var(--primary-green);
}

.alert-success {
    background-color: #D4EDDA;
    border-color: var(--primary-green);
    color: #155724;
}

.alert-danger {
    background-color: #F8D7DA;
    border-color: #DC3545;
    color: #721C24;
}

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-blue-light), var(--light-blue), var(--primary-green-light));
}

.login-card {
    max-width: 450px;
    width: 100%;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.login-card h2 {
    color: var(--primary-green);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.chart-container {
    position: relative;
    height: 300px;
    padding: 1rem;
}

.quick-actions .btn {
    margin: 0.25rem;
}

@media (max-width: 768px) {
    .sidebar {
        min-height: auto;
        padding: 1rem 0;
    }
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    .main-content {
        padding: 1rem;
    }
}

.chatbot-toggle {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition);
}
.chatbot-toggle:hover {
    transform: scale(1.1);
}
.chatbot-panel {
    position: fixed;
    bottom: 90px;
    left: 24px;
    width: 380px;
    height: 520px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    display: flex;
    flex-direction: column;
    transform: scale(0);
    transform-origin: bottom left;
    transition: transform 0.25s ease;
    overflow: hidden;
}
.chatbot-panel.open {
    transform: scale(1);
}
.chatbot-header {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-dark));
    color: white;
    padding: 14px 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.chatbot-header .btn-close {
    margin-left: auto;
}
.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #f0f2f5;
}
.chatbot-message {
    display: flex;
    max-width: 85%;
}
.chatbot-message.user {
    align-self: flex-end;
}
.chatbot-message.bot {
    align-self: flex-start;
}
.chatbot-message .msg-content {
    padding: 10px 14px;
    border-radius: 18px;
    font-size: 0.9rem;
    line-height: 1.5;
    word-wrap: break-word;
}
.chatbot-message.user .msg-content {
    background: var(--primary-green);
    color: white;
    border-bottom-right-radius: 4px;
}
.chatbot-message.bot .msg-content {
    background: white;
    color: var(--dark-gray);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.chatbot-input {
    display: flex;
    padding: 12px;
    border-top: 1px solid var(--border-color);
    background: white;
    gap: 8px;
}
.chatbot-input input {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 8px 14px;
    font-size: 0.9rem;
    outline: none;
}
.chatbot-input input:focus {
    border-color: var(--primary-green);
}
.chatbot-input button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--primary-green);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}
.chatbot-input button:hover {
    background: var(--primary-green-dark);
}