diff --git a/assets/css/custom.css b/assets/css/custom.css
index 46ada91..9d645ab 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -565,3 +565,192 @@ footer a, .ui.footer a {
 ::-webkit-scrollbar-thumb:hover {
     background: rgba(0, 242, 254, 0.75);
 }
+
+/* ==========================================================================
+   13. PREMIUM CYBER SIGN-IN & AUTHENTICATION (Glassmorphism Card)
+   ========================================================================== */
+.page-content.user.signin {
+    min-height: calc(100vh - 160px) !important;
+    display: flex !important;
+    flex-direction: column !important;
+    align-items: center !important;
+    justify-content: center !important;
+    padding: 30px 16px !important;
+}
+
+.cyber-auth-container {
+    width: min(540px, 94vw);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    margin: 20px auto;
+    z-index: 2;
+}
+
+.cyber-auth-logo-wrapper {
+    margin-bottom: 24px;
+    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
+}
+
+.cyber-auth-logo-wrapper:hover {
+    transform: scale(1.03);
+}
+
+.cyber-auth-logo {
+    width: min(480px, 86vw);
+    height: auto;
+    max-height: 95px;
+    object-fit: contain;
+    filter: drop-shadow(0 0 25px rgba(0, 242, 254, 0.45));
+}
+
+.cyber-auth-card {
+    width: 100%;
+    position: relative;
+    background: rgba(11, 17, 33, 0.88) !important;
+    backdrop-filter: blur(28px) saturate(190%) !important;
+    -webkit-backdrop-filter: blur(28px) saturate(190%) !important;
+    border: 1px solid rgba(0, 242, 254, 0.28) !important;
+    border-radius: 24px !important;
+    box-shadow: 
+        0 25px 60px -15px rgba(0, 0, 0, 0.8),
+        0 0 35px rgba(0, 242, 254, 0.18),
+        inset 0 1px 0 rgba(255, 255, 255, 0.12) !important;
+    padding: 40px 44px !important;
+    overflow: hidden;
+    transition: transform 0.3s ease, box-shadow 0.3s ease !important;
+}
+
+.cyber-auth-card:hover {
+    border-color: rgba(0, 242, 254, 0.45) !important;
+    box-shadow: 
+        0 30px 70px -15px rgba(0, 0, 0, 0.85),
+        0 0 45px rgba(0, 242, 254, 0.25),
+        inset 0 1px 0 rgba(255, 255, 255, 0.18) !important;
+}
+
+/* Glowing Top Accent Line */
+.cyber-auth-card::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 3px;
+    background: linear-gradient(90deg, #00f2fe 0%, #38bdf8 50%, #10b981 100%);
+    box-shadow: 0 0 15px #00f2fe;
+}
+
+/* Reset default Semantic UI attached segments inside cyber card */
+.cyber-auth-card .ui.attached.header,
+.cyber-auth-card .ui.attached.segment {
+    background: transparent !important;
+    border: none !important;
+    box-shadow: none !important;
+    padding: 0 !important;
+    margin: 0 !important;
+}
+
+.cyber-auth-card h4.ui.top.attached.header {
+    font-size: 1.8rem !important;
+    font-weight: 700 !important;
+    text-align: center !important;
+    background: linear-gradient(135deg, #ffffff 40%, #94a3b8 100%) !important;
+    -webkit-background-clip: text !important;
+    -webkit-text-fill-color: transparent !important;
+    margin-bottom: 24px !important;
+    letter-spacing: -0.02em !important;
+}
+
+/* Form Fields */
+.cyber-auth-card .field {
+    margin-bottom: 22px !important;
+}
+
+.cyber-auth-card .field label {
+    display: block !important;
+    font-size: 0.85rem !important;
+    font-weight: 600 !important;
+    text-transform: uppercase !important;
+    letter-spacing: 0.05em !important;
+    color: #cbd5e1 !important;
+    margin-bottom: 8px !important;
+}
+
+.cyber-auth-card .ui.form input[type="text"],
+.cyber-auth-card .ui.form input[type="password"] {
+    width: 100% !important;
+    background: rgba(6, 10, 22, 0.75) !important;
+    border: 1px solid rgba(148, 163, 184, 0.25) !important;
+    border-radius: 12px !important;
+    color: #ffffff !important;
+    padding: 14px 18px !important;
+    font-size: 1rem !important;
+    transition: all 0.25s ease !important;
+    outline: none !important;
+    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3) !important;
+}
+
+.cyber-auth-card .ui.form input[type="text"]:focus,
+.cyber-auth-card .ui.form input[type="password"]:focus {
+    border-color: #00f2fe !important;
+    background: rgba(6, 10, 22, 0.95) !important;
+    box-shadow: 0 0 0 3px rgba(0, 242, 254, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.3) !important;
+}
+
+/* Primary Submit Button */
+.cyber-auth-card button.ui.primary.button {
+    width: 100% !important;
+    margin-top: 10px !important;
+    padding: 15px !important;
+    font-size: 1.05rem !important;
+    font-weight: 800 !important;
+    border-radius: 12px !important;
+    background: linear-gradient(135deg, #00f2fe 0%, #10b981 100%) !important;
+    color: #020617 !important;
+    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.4) !important;
+    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
+    cursor: pointer !important;
+    letter-spacing: 0.02em !important;
+}
+
+.cyber-auth-card button.ui.primary.button:hover {
+    transform: translateY(-2px) scale(1.01) !important;
+    box-shadow: 0 8px 30px rgba(0, 242, 254, 0.6) !important;
+    filter: brightness(1.15) !important;
+    color: #000000 !important;
+}
+
+/* Checkbox & Inline Field */
+.cyber-auth-card .inline.field .ui.checkbox label {
+    color: #cbd5e1 !important;
+    font-size: 0.92rem !important;
+    cursor: pointer !important;
+}
+
+/* Secondary Registration Box Below Card */
+.cyber-auth-card + .ui.container,
+.cyber-auth-card .ui.attached.segment.header.top {
+    margin-top: 24px !important;
+    padding-top: 20px !important;
+    border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
+    text-align: center !important;
+}
+
+.cyber-auth-card .ui.attached.segment.header.top span {
+    color: #94a3b8 !important;
+    font-size: 0.95rem !important;
+}
+
+.cyber-auth-card .ui.attached.segment.header.top a {
+    color: #00f2fe !important;
+    font-weight: 600 !important;
+    margin-left: 6px !important;
+    text-decoration: none !important;
+}
+
+.cyber-auth-card .ui.attached.segment.header.top a:hover {
+    color: #38bdf8 !important;
+    text-shadow: 0 0 8px rgba(56, 189, 248, 0.6) !important;
+}
diff --git a/templates/user/auth/signin.tmpl b/templates/user/auth/signin.tmpl
new file mode 100644
index 0000000..c7e83f4
--- /dev/null
+++ b/templates/user/auth/signin.tmpl
@@ -0,0 +1,19 @@
+{{template "base/head" .}}
+<div role="main" aria-label="{{.Title}}" class="page-content user signin{{if .LinkAccountMode}} icon{{end}}">
+	<div class="cyber-auth-container">
+		
+		<!-- Floating Brand Banner Above Card -->
+		<div class="cyber-auth-logo-wrapper">
+			<a href="/" title="Home">
+				<img class="cyber-auth-logo" src="/assets/img/gitea_banner_logo.png" alt="gitea.free-warez.win">
+			</a>
+		</div>
+
+		<!-- Glassmorphism Card -->
+		<div class="cyber-auth-card">
+			{{template "user/auth/signin_inner" .}}
+		</div>
+
+	</div>
+</div>
+{{template "base/footer" .}}