diff --git a/.htaccess b/.htaccess
new file mode 100644
index 0000000..4cda808
--- /dev/null
+++ b/.htaccess
@@ -0,0 +1,49 @@
+# =============================================
+# WebGIS — .htaccess (Root)
+# Kompatibel dengan InfinityFree / Apache
+# =============================================
+
+# Set halaman index
+DirectoryIndex index.html index.php
+
+# Blokir akses ke file sensitif
+<Files ".env">
+    Order allow,deny
+    Deny from all
+</Files>
+
+<Files "env_loader.php">
+    Order allow,deny
+    Deny from all
+</Files>
+
+<Files "db_connect.php">
+    Order allow,deny
+    Deny from all
+</Files>
+
+# Blokir akses ke file .sql
+<FilesMatch "\.sql$">
+    Order allow,deny
+    Deny from all
+</FilesMatch>
+
+# Blokir akses ke file .gitignore dan .git
+<FilesMatch "^\.(git|gitignore|env)">
+    Order allow,deny
+    Deny from all
+</FilesMatch>
+
+# Aktifkan kompres GZIP untuk performa
+<IfModule mod_deflate.c>
+    AddOutputFilterByType DEFLATE text/html text/css application/javascript application/json
+</IfModule>
+
+# Cache statis untuk performa
+<IfModule mod_expires.c>
+    ExpiresActive On
+    ExpiresByType text/css "access plus 1 week"
+    ExpiresByType application/javascript "access plus 1 week"
+    ExpiresByType image/png "access plus 1 month"
+    ExpiresByType image/jpeg "access plus 1 month"
+</IfModule>
diff --git a/db_connect.php b/db_connect.php
index a3541d8..5921077 100644
--- a/db_connect.php
+++ b/db_connect.php
@@ -1,17 +1,32 @@
 <?php
-$host = "localhost";
-$user = "root";
-$pass = "";
-$db   = "webgis_poverty";
+/**
+ * Koneksi database terpusat — WebGIS
+ * Semua subfolder (spbu/, jalan/, parsil/, poverty/api/) include file ini.
+ *
+ * Untuk InfinityFree: ganti nilai di bawah dengan kredensial hosting.
+ * Untuk XAMPP lokal  : nilai default sudah sesuai.
+ */
 
-// Coba koneksi ke server dan pilih database
-$conn = new mysqli($host, $user, $pass, $db);
+// ── Konfigurasi ──────────────────────────────────────────────
+$host = getenv('DB_HOST') ?: 'localhost';
+$port = (int)(getenv('DB_PORT') ?: 3306);
+$user = getenv('DB_USER') ?: 'root';
+$pass = getenv('DB_PASS') ?: '';
+$db   = getenv('DB_NAME') ?: 'webgis_poverty';
+// ─────────────────────────────────────────────────────────────
+
+$conn = new mysqli($host, $user, $pass, $db, $port);
 
 if ($conn->connect_error) {
-    die("Koneksi gagal: " . $conn->connect_error);
+    if (!headers_sent()) {
+        http_response_code(500);
+        header('Content-Type: application/json; charset=UTF-8');
+    }
+    die(json_encode([
+        'status'  => 'error',
+        'message' => 'Koneksi database gagal: ' . $conn->connect_error,
+    ]));
 }
-// Set charset
-$conn->set_charset("utf8mb4");
 
-// Jika di-include oleh file API, biarkan $conn tersedia
+$conn->set_charset('utf8mb4');
 ?>
diff --git a/index.html b/index.html
index f70b996..9cbd8e6 100644
--- a/index.html
+++ b/index.html
@@ -994,7 +994,7 @@
 				<div class="projects-grid">
 					<!-- ===== PROJECT 1: POVERTY ===== -->
 					<a
-						href="/webgis/poverty/index.php"
+						href="poverty/index.php"
 						class="project-card"
 						id="card-poverty"
 						style="animation-delay: 0.05s"
@@ -1050,7 +1050,7 @@
 
 					<!-- ===== PROJECT 2: JALAN ===== -->
 					<a
-						href="/webgis/jalan/index.php"
+						href="jalan/index.php"
 						class="project-card"
 						id="card-jalan"
 						style="animation-delay: 0.1s"
@@ -1102,7 +1102,7 @@
 
 					<!-- ===== PROJECT 3: PARSIL ===== -->
 					<a
-						href="/webgis/parsil/index.php"
+						href="parsil/index.php"
 						class="project-card"
 						id="card-parsil"
 						style="animation-delay: 0.15s"
@@ -1154,7 +1154,7 @@
 
 					<!-- ===== PROJECT 4: SPBU ===== -->
 					<a
-						href="/webgis/spbu/index.php"
+						href="spbu/index.php"
 						class="project-card"
 						id="card-spbu"
 						style="animation-delay: 0.2s"
diff --git a/jalan/db_connect.php b/jalan/db_connect.php
index be6da1b..6ace1ca 100644
--- a/jalan/db_connect.php
+++ b/jalan/db_connect.php
@@ -1,26 +1,4 @@
 <?php
-// Load konfigurasi dari file .env di root webgis/
-require_once dirname(__DIR__) . '/env_loader.php';
-
-$host = env('DB_HOST', 'localhost');
-$port = (int) env('DB_PORT', 3306);
-$user = env('DB_USER', 'root');
-$pass = env('DB_PASS', '');
-$db   = env('DB_NAME', 'webgis_poverty');
-
-// Koneksi ke MySQL/MariaDB
-$conn = new mysqli($host, $user, $pass, $db, $port);
-
-if ($conn->connect_error) {
-    http_response_code(500);
-    die(json_encode([
-        'status'  => 'error',
-        'message' => 'Koneksi database gagal: ' . $conn->connect_error,
-    ]));
-}
-
-// Set charset
-$conn->set_charset('utf8mb4');
-
-// Jika di-include oleh file API, biarkan $conn tersedia
+// Gunakan koneksi terpusat dari root project
+require_once dirname(__DIR__) . '/db_connect.php';
 ?>
diff --git a/jalan/index.php b/jalan/index.php
index 749824d..d46d8a4 100644
--- a/jalan/index.php
+++ b/jalan/index.php
@@ -52,7 +52,7 @@
     </button>
 
     <!-- Tombol Kembali ke Beranda -->
-    <a href="/webgis/index.html" class="btn-back-home" title="Kembali ke Beranda">
+    <a href="../index.html" class="btn-back-home" title="Kembali ke Beranda">
         <i class="fas fa-arrow-left"></i>
         <span>Beranda</span>
     </a>
diff --git a/parsil/db_connect.php b/parsil/db_connect.php
index be6da1b..6ace1ca 100644
--- a/parsil/db_connect.php
+++ b/parsil/db_connect.php
@@ -1,26 +1,4 @@
 <?php
-// Load konfigurasi dari file .env di root webgis/
-require_once dirname(__DIR__) . '/env_loader.php';
-
-$host = env('DB_HOST', 'localhost');
-$port = (int) env('DB_PORT', 3306);
-$user = env('DB_USER', 'root');
-$pass = env('DB_PASS', '');
-$db   = env('DB_NAME', 'webgis_poverty');
-
-// Koneksi ke MySQL/MariaDB
-$conn = new mysqli($host, $user, $pass, $db, $port);
-
-if ($conn->connect_error) {
-    http_response_code(500);
-    die(json_encode([
-        'status'  => 'error',
-        'message' => 'Koneksi database gagal: ' . $conn->connect_error,
-    ]));
-}
-
-// Set charset
-$conn->set_charset('utf8mb4');
-
-// Jika di-include oleh file API, biarkan $conn tersedia
+// Gunakan koneksi terpusat dari root project
+require_once dirname(__DIR__) . '/db_connect.php';
 ?>
diff --git a/parsil/index.php b/parsil/index.php
index aa92a1a..ffb6f02 100644
--- a/parsil/index.php
+++ b/parsil/index.php
@@ -52,7 +52,7 @@
     </button>
 
     <!-- Tombol Kembali ke Beranda -->
-    <a href="/webgis/index.html" class="btn-back-home" title="Kembali ke Beranda">
+    <a href="../index.html" class="btn-back-home" title="Kembali ke Beranda">
         <i class="fas fa-arrow-left"></i>
         <span>Beranda</span>
     </a>
diff --git a/spbu/create.php b/spbu/create.php
index d86b19f..5e888b9 100644
--- a/spbu/create.php
+++ b/spbu/create.php
@@ -1,6 +1,6 @@
 <?php
 header("Content-Type: application/json; charset=UTF-8");
-require_once('../poverty/api/auth_helper.php');
+require_once(dirname(__DIR__) . '/poverty/api/auth_helper.php');
 requireAdmin();
 include_once('db_connect.php');
 
diff --git a/spbu/db_connect.php b/spbu/db_connect.php
index be6da1b..6ace1ca 100644
--- a/spbu/db_connect.php
+++ b/spbu/db_connect.php
@@ -1,26 +1,4 @@
 <?php
-// Load konfigurasi dari file .env di root webgis/
-require_once dirname(__DIR__) . '/env_loader.php';
-
-$host = env('DB_HOST', 'localhost');
-$port = (int) env('DB_PORT', 3306);
-$user = env('DB_USER', 'root');
-$pass = env('DB_PASS', '');
-$db   = env('DB_NAME', 'webgis_poverty');
-
-// Koneksi ke MySQL/MariaDB
-$conn = new mysqli($host, $user, $pass, $db, $port);
-
-if ($conn->connect_error) {
-    http_response_code(500);
-    die(json_encode([
-        'status'  => 'error',
-        'message' => 'Koneksi database gagal: ' . $conn->connect_error,
-    ]));
-}
-
-// Set charset
-$conn->set_charset('utf8mb4');
-
-// Jika di-include oleh file API, biarkan $conn tersedia
+// Gunakan koneksi terpusat dari root project
+require_once dirname(__DIR__) . '/db_connect.php';
 ?>
diff --git a/spbu/index.php b/spbu/index.php
index c0754a2..bd05079 100644
--- a/spbu/index.php
+++ b/spbu/index.php
@@ -52,7 +52,7 @@
     </button>
 
     <!-- Tombol Kembali ke Beranda -->
-    <a href="/webgis/index.html" class="btn-back-home" title="Kembali ke Beranda">
+    <a href="../index.html" class="btn-back-home" title="Kembali ke Beranda">
         <i class="fas fa-arrow-left"></i>
         <span>Beranda</span>
     </a>