modernizing frontend

static/css/auth.css

@@ -30,12 +30,13 @@
 .auth-logo-icon {
     width: 50px;
     height: 50px;
-    background-color: #ff5e3a;
-    border-radius: 50%;
+    background: linear-gradient(135deg, #ff5e3a 0%, #ff2d55 100%);
+    border-radius: 12px;
     display: flex;
     align-items: center;
     justify-content: center;
     margin-right: 10px;
+    box-shadow: 0 4px 12px rgba(255, 94, 58, 0.3);
 }
 
 .auth-logo-icon svg {
@@ -97,19 +98,27 @@
 .auth-button {
     width: 100%;
     padding: 12px 15px;
-    border-radius: 8px;
-    background-color: #ff5e3a;
+    border-radius: 10px;
+    background: linear-gradient(135deg, #ff5e3a 0%, #ff2d55 100%);
     color: white;
     font-weight: bold;
     border: none;
     cursor: pointer;
     font-size: 16px;
-    transition: background-color 0.2s;
+    transition: all 0.3s ease;
     margin-top: 10px;
+    box-shadow: 0 4px 12px rgba(255, 94, 58, 0.3);
 }
 
 .auth-button:hover {
-    background-color: #e64a2e;
+    transform: translateY(-1px);
+    box-shadow: 0 6px 20px rgba(255, 94, 58, 0.4);
+    filter: brightness(1.05);
+}
+
+.auth-button:active {
+    transform: translateY(0);
+    box-shadow: 0 2px 8px rgba(255, 94, 58, 0.3);
 }
 
 .auth-button:disabled {
@@ -205,6 +214,26 @@
     text-align: center;
 }
 
+/* Auto-detected language banner */
+.lang-autodetected {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 8px;
+    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
+    border: 1px solid #bbf7d0;
+    border-radius: 8px;
+    padding: 10px 16px;
+    margin-bottom: 16px;
+    color: #16a34a;
+    font-size: 14px;
+    font-weight: 500;
+}
+
+.lang-autodetected i {
+    font-size: 14px;
+}
+
 .language-subtitle {
     color: #64748b;
     font-size: 16px;
@@ -290,6 +319,183 @@
     margin-left: auto;
 }
 
+/* "More languages" button */
+.lang-more-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 8px;
+    width: 100%;
+    padding: 12px;
+    margin-bottom: 20px;
+    border: 1px dashed #cbd5e1;
+    border-radius: 10px;
+    background: transparent;
+    color: #64748b;
+    font-size: 14px;
+    font-weight: 500;
+    cursor: pointer;
+    transition: all 0.2s ease;
+}
+
+.lang-more-btn:hover {
+    border-color: #ff5e3a;
+    color: #ff5e3a;
+    background: #fff5f3;
+}
+
+.lang-more-btn i {
+    font-size: 16px;
+}
+
+/* ====== Language Modal ====== */
+.lang-modal-overlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.5);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 9999;
+    padding: 20px;
+    animation: fadeIn 0.2s ease;
+}
+
+@keyframes fadeIn {
+    from { opacity: 0; }
+    to { opacity: 1; }
+}
+
+.lang-modal {
+    background: #fff;
+    border-radius: 16px;
+    width: 100%;
+    max-width: 480px;
+    max-height: 70vh;
+    display: flex;
+    flex-direction: column;
+    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
+    animation: slideUp 0.25s ease;
+}
+
+@keyframes slideUp {
+    from { transform: translateY(20px); opacity: 0; }
+    to { transform: translateY(0); opacity: 1; }
+}
+
+.lang-modal-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 20px 24px 12px;
+}
+
+.lang-modal-header h3 {
+    margin: 0;
+    font-size: 18px;
+    font-weight: 600;
+    color: #1e293b;
+}
+
+.lang-modal-close {
+    background: none;
+    border: none;
+    font-size: 24px;
+    color: #94a3b8;
+    cursor: pointer;
+    padding: 4px 8px;
+    border-radius: 6px;
+    line-height: 1;
+    transition: all 0.15s;
+}
+
+.lang-modal-close:hover {
+    background: #f1f5f9;
+    color: #475569;
+}
+
+.lang-modal-search {
+    position: relative;
+    padding: 0 24px 12px;
+}
+
+.lang-modal-search i {
+    position: absolute;
+    left: 38px;
+    top: 12px;
+    color: #94a3b8;
+    font-size: 14px;
+}
+
+.lang-modal-search input {
+    width: 100%;
+    padding: 10px 14px 10px 36px;
+    border: 2px solid #e2e8f0;
+    border-radius: 10px;
+    font-size: 14px;
+    outline: none;
+    transition: border-color 0.2s;
+    box-sizing: border-box;
+}
+
+.lang-modal-search input:focus {
+    border-color: #ff5e3a;
+}
+
+.lang-modal-list {
+    overflow-y: auto;
+    padding: 0 12px 16px;
+    flex: 1;
+}
+
+.lang-modal-item {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    padding: 12px 14px;
+    border-radius: 10px;
+    cursor: pointer;
+    transition: all 0.15s;
+}
+
+.lang-modal-item:hover {
+    background: #f8fafc;
+}
+
+.lang-modal-item.selected {
+    background: #fff5f3;
+}
+
+.lang-modal-flag {
+    font-size: 24px;
+    flex-shrink: 0;
+}
+
+.lang-modal-native {
+    font-size: 15px;
+    font-weight: 500;
+    color: #1e293b;
+}
+
+.lang-modal-english {
+    font-size: 13px;
+    color: #94a3b8;
+    margin-left: auto;
+}
+
+.lang-modal-check {
+    color: #ff5e3a;
+    font-size: 14px;
+    flex-shrink: 0;
+}
+
+.lang-modal-empty {
+    text-align: center;
+    color: #94a3b8;
+    padding: 30px;
+    font-size: 14px;
+}
+
 @media (max-width: 480px) {
     .auth-panel {
         width: 90%;
@@ -303,4 +509,13 @@
     .language-flag {
         font-size: 24px;
     }
+
+    .lang-modal {
+        max-height: 80vh;
+    }
+    
+    .lang-autodetected {
+        font-size: 13px;
+        padding: 8px 12px;
+    }
 }