<?php
require_once __DIR__ . '/../config.php';
require_once __DIR__ . '/../db.php';
require_once __DIR__ . '/../includes/functions.php';
require_once __DIR__ . '/../includes/Language.php';

// Redirect to login if not logged in or NOT an admin
if (!isLoggedIn() || !isAdmin()) { redirect('../login.php'); }

// RBAC Protection (Needs settings permission to configure payouts)
if (!hasPermission('manage_settings')) { die("Access Denied: You do not have permission to manage Refer & Earn settings."); }

$lang = new Language($db);
$current_lang = $lang->getCurrentLanguage();
$user_id = $_SESSION['user_id'];

// UI Permissions map for Sidebar
$can_users = hasPermission('manage_users');
$can_sellers = hasPermission('manage_sellers');
$can_staff = hasPermission('manage_staff_roles');
$can_services = hasPermission('manage_services');
$can_orders = hasPermission('manage_orders');
$can_transactions = hasPermission('manage_transactions');
$can_tickets = hasPermission('manage_tickets');
$can_settings = hasPermission('manage_settings');

// PRG Flash Messages Setup
if (isset($_SESSION['flash_success'])) {
    $success_msg = $_SESSION['flash_success'];
    unset($_SESSION['flash_success']);
}
if (isset($_SESSION['flash_error'])) {
    $error_msg = $_SESSION['flash_error'];
    unset($_SESSION['flash_error']);
}

// ---------------------------------------------------------
// UPDATE REFERRAL SETTINGS
// ---------------------------------------------------------
if (isset($_POST['update_referral'])) {
    $keys = ['ref_level_1_comm', 'ref_level_2_comm', 'ref_level_3_comm', 'customer_refer_reward'];
    
    foreach ($keys as $key) {
        if (isset($_POST[$key])) {
            $val = sanitize($_POST[$key]);
            $exists = $db->select("SELECT id FROM settings WHERE setting_key = ?", [$key]);
            if ($exists) {
                $db->insert("UPDATE settings SET setting_value = ? WHERE setting_key = ?", [$val, $key]);
            } else {
                $db->insert("INSERT INTO settings (setting_key, setting_value) VALUES (?, ?)", [$key, $val]);
            }
        }
    }
    
    $_SESSION['flash_success'] = "Refer & Earn settings updated successfully!";
    redirect('refer.php');
}

// ---------------------------------------------------------
// FETCH DATA
// ---------------------------------------------------------
$settings_raw = $db->select("SELECT * FROM settings WHERE setting_key IN ('ref_level_1_comm', 'ref_level_2_comm', 'ref_level_3_comm', 'customer_refer_reward')");
$ref_settings = [];
foreach($settings_raw as $s) { $ref_settings[$s['setting_key']] = $s['setting_value']; }

// Default fallbacks if not set in DB
$lvl1 = $ref_settings['ref_level_1_comm'] ?? '10';
$lvl2 = $ref_settings['ref_level_2_comm'] ?? '5';
$lvl3 = $ref_settings['ref_level_3_comm'] ?? '0';
$cust_reward = $ref_settings['customer_refer_reward'] ?? '50.00';

// Fetch recent referral payouts from transactions
$referral_txns = $db->select("
    SELECT t.*, u.name, u.mobile, u.user_type 
    FROM transactions t 
    JOIN users u ON t.user_id = u.id 
    WHERE t.description LIKE '%Refer%' OR t.description LIKE '%Reward%' 
    ORDER BY t.id DESC LIMIT 100
");

$company_logo = getSetting('company_logo', '../assets/images/logo.png');
?>
<!DOCTYPE html>
<html lang="<?php echo $current_lang; ?>">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Refer & Earn - Admin Panel</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap" rel="stylesheet">
    <style> body { font-family: 'Inter', sans-serif; } .hide-scrollbar::-webkit-scrollbar { display: none; } </style>
</head>
<body class="bg-gray-50" x-data="{ sidebarOpen: window.innerWidth >= 768 }">

    <div class="flex h-screen overflow-hidden">
        
        <aside :class="sidebarOpen ? 'w-64' : 'w-20'" class="flex-shrink-0 bg-gradient-to-b from-slate-800 to-slate-900 text-white transition-all duration-300 flex flex-col shadow-2xl z-50 overflow-x-hidden relative">
            <div class="flex items-center h-20 px-4 border-b border-white/10" :class="sidebarOpen ? 'justify-between' : 'justify-center'">
                <a href="../index.php" class="flex items-center">
                    <img src="<?php echo htmlspecialchars($company_logo ?? ''); ?>" alt="Logo" class="h-10 w-10 bg-white rounded p-1 flex-shrink-0 object-contain">
                    <span x-show="sidebarOpen" class="ml-3 text-xl font-bold tracking-wider text-emerald-400">ADMIN</span>
                </a>
            </div>

            <nav class="flex-1 px-3 py-6 space-y-1.5 overflow-y-auto hide-scrollbar text-sm font-medium">
    
    <a href="index.php" class="flex items-center px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all" :class="sidebarOpen ? '' : 'justify-center'">
        <i class="fas fa-chart-line flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
        <span x-show="sidebarOpen" class="ml-3 font-semibold">Dashboard</span>
    </a>
    
    <div x-data="{ profileMenuOpen: false }">
        <button @click="profileMenuOpen = !profileMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-user-tie flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Profile</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="profileMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="profileMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="profile.php#profile" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">My Profile</a>
            <a href="profile.php#edit" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Edit Profile</a>
            <a href="profile.php#kyc" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">KYC</a>
            <a href="profile.php#password" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Change Password</a>
            <a href="profile.php#id_card" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">ID Card</a>
        </div>
    </div>

    <div x-data="{ walletMenuOpen: false }">
        <button @click="walletMenuOpen = !walletMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-wallet flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Wallet Management</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="walletMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="walletMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="wallet.php#add_money" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Add Money</a>
            <a href="wallet.php#my_history" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">My wallet history</a>
            <a href="wallet.php#move_bank" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Move to Bank</a>
            <a href="wallet.php#all_history" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">All Wallet History</a>
            <a href="wallet.php#customer_history" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Customer Wallet History</a>
            <a href="wallet.php#seller_history" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller Wallet History</a>
            <a href="wallet.php#staff_history" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Staff Wallet History</a>
            <a href="wallet_history.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Wallet History</a>
            <a href="withdrawals.php#bank_requests" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Bank Request Pending</a>
            <a href="withdrawals.php#transactions" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Transaction Update</a>
        </div>
    </div>

    <div x-data="{ userMenuOpen: false }">
        <button @click="userMenuOpen = !userMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-users-cog flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">User Management</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="userMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="userMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="users.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Customer</a>
            <a href="notifications.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Notifications</a>
            <a href="sellers.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller</a>
            <a href="staff.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Staff</a>
            <a href="roles.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Custom Role</a>
        </div>
    </div>

    <div x-data="{ serviceMenuOpen: false }">
        <button @click="serviceMenuOpen = !serviceMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-layer-group flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Services Management</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="serviceMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="serviceMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="product_management.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Product Management</a>
            <a href="services.php#main_cats" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Main Services</a>
            <a href="services.php#sub_cats" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Sub Categories</a>
            <a href="pending_services.php" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Services List</a>
        </div>
    </div>

    <div x-data="{ settingMenuOpen: false }">
        <button @click="settingMenuOpen = !settingMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-cogs flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Website Settings</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="settingMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="settingMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="settings.php#home_settings" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Home Page All Settings</a>
            <a href="settings.php#customer_settings" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Customer Panel Settings</a>
            <a href="settings.php#seller_settings" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller Panel Settings</a>
            <a href="settings.php#staff_settings" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Staff Panel Settings</a>
        </div>
    </div>

    <div x-data="{ commMenuOpen: false }">
        <button @click="commMenuOpen = !commMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-percentage flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Commission Mgt</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="commMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="commMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="commissions.php#customer" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Customer</a>
            <a href="commissions.php#seller" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller</a>
            <a href="commissions.php#staff" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Staff</a>
            <a href="commissions.php#admin" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Super Admin</a>
        </div>
    </div>

    <div x-data="{ reportMenuOpen: false }">
        <button @click="reportMenuOpen = !reportMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-chart-pie flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Report Management</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="reportMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="reportMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="reports.php#all" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">All Report</a>
            <a href="reports.php#customer" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Customer</a>
            <a href="reports.php#seller" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller</a>
            <a href="reports.php#staff" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Staff</a>
            <a href="reports.php#admin" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Super Admin</a>
        </div>
    </div>

    <div x-data="{ helpdeskMenuOpen: false }">
        <button @click="helpdeskMenuOpen = !helpdeskMenuOpen" class="w-full flex items-center justify-between px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all group" :class="sidebarOpen ? '' : 'justify-center'">
            <div class="flex items-center">
                <i class="fas fa-headset flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
                <span x-show="sidebarOpen" class="ml-3 font-semibold">Helpdesk</span>
            </div>
            <i x-show="sidebarOpen" class="fas fa-chevron-down text-xs transition-transform" :class="helpdeskMenuOpen ? 'rotate-180' : ''"></i>
        </button>
        <div x-show="helpdeskMenuOpen && sidebarOpen" x-transition class="pl-10 pr-3 py-2 space-y-1" style="display:none;">
            <a href="tickets.php#customer" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">User</a>
            <a href="tickets.php#seller" class="block py-2 text-sm text-gray-400 hover:text-emerald-400 transition-colors">Seller</a>
        </div>
    </div>

    <a href="refer.php" class="flex items-center px-3 py-3 text-gray-300 hover:bg-white/5 hover:text-white rounded-xl transition-all" :class="sidebarOpen ? '' : 'justify-center'">
        <i class="fas fa-gift flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
        <span x-show="sidebarOpen" class="ml-3 font-semibold">Refer & Earn</span>
    </a>

    <div class="pt-6 mt-6 border-t border-white/10">
        <a href="../logout.php" onclick="return confirm('Are you sure you want to logout?');" class="flex items-center px-3 py-3 text-rose-400 hover:bg-rose-500/20 hover:text-rose-300 rounded-xl transition-all" :class="sidebarOpen ? '' : 'justify-center'">
            <i class="fas fa-sign-out-alt flex-shrink-0" :class="sidebarOpen ? 'w-6 text-center' : 'text-xl'"></i>
            <span x-show="sidebarOpen" class="ml-3">Logout</span>
        </a>
    </div>
</nav>
        </aside>

        <div class="flex-1 flex flex-col min-w-0 bg-gray-100 overflow-hidden">
            <header class="h-20 bg-white text-slate-800 flex items-center justify-between px-4 shadow-sm border-b border-gray-200 z-40 relative">
                <div class="flex items-center"><button @click="sidebarOpen = !sidebarOpen" class="p-2 mr-3 text-slate-500 hover:text-emerald-600 rounded-lg"><i class="fas fa-bars text-xl"></i></button><h2 class="text-xl font-bold hidden md:block text-slate-800">Referral Program Management</h2></div>
            </header>

            <main class="flex-1 overflow-y-auto p-4 md:p-6 lg:p-8">
                
                <?php if (!empty($success_msg)): ?>
                <div class="mb-6 bg-emerald-50 border border-emerald-200 text-emerald-700 px-4 py-3 rounded-xl flex items-center shadow-sm">
                    <i class="fas fa-check-circle mr-2"></i><span class="font-medium"><?php echo $success_msg; ?></span>
                </div>
                <?php endif; ?>
                <?php if (!empty($error_msg)): ?>
                <div class="mb-6 bg-rose-50 border border-rose-200 text-rose-700 px-4 py-3 rounded-xl flex items-center shadow-sm">
                    <i class="fas fa-exclamation-circle mr-2"></i><span class="font-medium"><?php echo $error_msg; ?></span>
                </div>
                <?php endif; ?>

                <div class="mb-6">
                    <h2 class="text-2xl font-extrabold text-gray-800">Refer & Earn Settings</h2>
                    <p class="text-gray-500 text-sm mt-1">Configure multi-level commission payouts for B2B sellers and standard rewards for customers.</p>
                </div>

                <div class="grid grid-cols-1 lg:grid-cols-3 gap-6 mb-8">
                    
                    <div class="lg:col-span-1 bg-white rounded-2xl shadow-sm border border-gray-200 overflow-hidden">
                        <div class="px-6 py-4 border-b border-gray-100 bg-emerald-50 flex items-center">
                            <div class="w-10 h-10 rounded-full bg-emerald-100 text-emerald-600 flex items-center justify-center mr-3 border border-emerald-200">
                                <i class="fas fa-cog"></i>
                            </div>
                            <h3 class="font-bold text-gray-800">Commission Configuration</h3>
                        </div>
                        <div class="p-6">
                            <form method="POST">
                                <h4 class="text-xs font-bold text-gray-400 uppercase tracking-wider mb-4 border-b pb-2">B2B Network Referrals (%)</h4>
                                <div class="space-y-4 mb-6">
                                    <div>
                                        <label class="block text-sm font-bold text-gray-700 mb-1">Level 1 Commission (Direct)</label>
                                        <div class="relative">
                                            <input type="number" step="0.01" name="ref_level_1_comm" value="<?php echo htmlspecialchars($lvl1); ?>" required class="w-full pl-4 pr-10 py-2.5 bg-gray-50 border border-gray-200 rounded-lg focus:bg-white focus:ring-2 focus:ring-emerald-500 font-bold text-emerald-700 transition-all">
                                            <span class="absolute inset-y-0 right-0 flex items-center pr-4 text-gray-400 font-bold">%</span>
                                        </div>
                                    </div>
                                    <div>
                                        <label class="block text-sm font-bold text-gray-700 mb-1">Level 2 Commission (Tier 2)</label>
                                        <div class="relative">
                                            <input type="number" step="0.01" name="ref_level_2_comm" value="<?php echo htmlspecialchars($lvl2); ?>" required class="w-full pl-4 pr-10 py-2.5 bg-gray-50 border border-gray-200 rounded-lg focus:bg-white focus:ring-2 focus:ring-emerald-500 font-bold text-teal-600 transition-all">
                                            <span class="absolute inset-y-0 right-0 flex items-center pr-4 text-gray-400 font-bold">%</span>
                                        </div>
                                    </div>
                                    <div>
                                        <label class="block text-sm font-bold text-gray-700 mb-1">Level 3 Commission (Tier 3)</label>
                                        <div class="relative">
                                            <input type="number" step="0.01" name="ref_level_3_comm" value="<?php echo htmlspecialchars($lvl3); ?>" required class="w-full pl-4 pr-10 py-2.5 bg-gray-50 border border-gray-200 rounded-lg focus:bg-white focus:ring-2 focus:ring-emerald-500 font-bold text-blue-600 transition-all">
                                            <span class="absolute inset-y-0 right-0 flex items-center pr-4 text-gray-400 font-bold">%</span>
                                        </div>
                                    </div>
                                </div>

                                <h4 class="text-xs font-bold text-gray-400 uppercase tracking-wider mb-4 border-b pb-2">Customer Referrals (Flat ₹)</h4>
                                <div class="mb-6">
                                    <label class="block text-sm font-bold text-gray-700 mb-1">Standard Referral Reward</label>
                                    <div class="relative">
                                        <span class="absolute inset-y-0 left-0 w-9 flex items-center justify-center text-gray-400 font-bold pointer-events-none">₹</span>
                                        <input type="number" step="0.01" name="customer_refer_reward" value="<?php echo htmlspecialchars($cust_reward); ?>" required class="w-full pl-9 pr-4 py-2.5 bg-gray-50 border border-gray-200 rounded-lg focus:bg-white focus:ring-2 focus:ring-emerald-500 font-bold text-purple-600 transition-all">
                                    </div>
                                    <p class="text-[10px] text-gray-500 mt-1">Flat amount credited to customer wallets per successful referral.</p>
                                </div>

                                <button type="submit" name="update_referral" class="w-full bg-emerald-600 hover:bg-emerald-700 text-white font-bold py-3 rounded-xl shadow-md transition-colors flex items-center justify-center">
                                    <i class="fas fa-save mr-2"></i> Save Configuration
                                </button>
                            </form>
                        </div>
                    </div>

                    <div class="lg:col-span-2 bg-white rounded-2xl shadow-sm border border-gray-200 overflow-hidden flex flex-col">
                        <div class="px-6 py-4 border-b border-gray-100 bg-gray-50 flex justify-between items-center">
                            <h3 class="font-bold text-gray-800"><i class="fas fa-history text-gray-400 mr-2"></i> Recent Referral Payouts</h3>
                        </div>
                        <div class="overflow-x-auto overflow-y-auto max-h-[600px] flex-1">
                            <table class="w-full text-left">
                                <thead class="bg-white border-b border-gray-100 text-xs text-gray-500 uppercase tracking-wider sticky top-0 shadow-sm">
                                    <tr>
                                        <th class="p-4 pl-6">Date</th>
                                        <th class="p-4">User Details</th>
                                        <th class="p-4">Reward Description</th>
                                        <th class="p-4 pr-6 text-right">Amount Credited</th>
                                    </tr>
                                </thead>
                                <tbody class="divide-y divide-gray-50 text-sm">
                                    <?php if(!empty($referral_txns)): foreach($referral_txns as $tx): ?>
                                    <tr class="hover:bg-gray-50">
                                        <td class="p-4 pl-6 whitespace-nowrap">
                                            <span class="text-gray-600 font-medium"><?php echo date('d M Y', strtotime($tx['created_at'])); ?></span>
                                            <p class="text-[10px] text-gray-400"><?php echo date('h:i A', strtotime($tx['created_at'])); ?></p>
                                        </td>
                                        <td class="p-4">
                                            <p class="font-bold text-gray-800"><?php echo htmlspecialchars($tx['name']); ?></p>
                                            <p class="text-[10px] <?php echo $tx['user_type'] == 'seller' ? 'text-teal-600' : 'text-blue-500'; ?> uppercase font-bold tracking-wider"><?php echo htmlspecialchars($tx['user_type']); ?></p>
                                        </td>
                                        <td class="p-4 text-gray-600">
                                            <?php echo htmlspecialchars($tx['description']); ?>
                                        </td>
                                        <td class="p-4 pr-6 text-right">
                                            <span class="font-black text-emerald-600">+₹<?php echo number_format($tx['amount'], 2); ?></span>
                                        </td>
                                    </tr>
                                    <?php endforeach; else: ?>
                                    <tr>
                                        <td colspan="4" class="p-12 text-center text-gray-500">
                                            <div class="w-16 h-16 bg-gray-50 rounded-full flex items-center justify-center mx-auto mb-4 text-gray-400 text-2xl border border-gray-100"><i class="fas fa-gift"></i></div>
                                            <p class="text-lg font-medium">No referral rewards distributed yet.</p>
                                        </td>
                                    </tr>
                                    <?php endif; ?>
                                </tbody>
                            </table>
                        </div>
                    </div>

                </div>
            </main>
        </div>
    </div>
</body>
</html>