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

 ::selection {
     background: transparent;
     color: rgba(255, 48, 48, 0.51);
 }

 body {
     font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
     line-height: 1.6;
     color: #333;
     /* overflow: hidden; */
     display: flex;
     flex-direction: column;
     align-items: center;
     justify-content: center;
 }

 .error-message.show {
     color: #e74c3c;
     font-size: 0.85rem;
     margin-top: 0.25rem;
 }

 .input-container.error {
     border-color: #e74c3c;
 }

 .input-container.success {
     border-color: #2ecc71;
 }


 .auth-form {
     overflow-y: auto;
     /* اسکرول عمودی فعال */
     scrollbar-width: thin;
     /* برای فایرفاکس */
     scrollbar-color: transparent transparent;
     /* رنگ اسکرولبار شفاف */
 }

 .auth-form::-webkit-scrollbar {
     width: 6px;
     /* عرض کم برای اسکرولبار */
     background: transparent;
     /* پس‌زمینه شفاف */
 }

 .auth-form::-webkit-scrollbar-thumb {
     background: rgba(0, 0, 0, 0.2);
     /* رنگ دسته اسکرولبار با کمی شفافیت */
     border-radius: 3px;
     /* گرد کردن گوشه‌ها */
 }

 .auth-form:hover::-webkit-scrollbar-thumb {
     background: rgba(0, 0, 0, 0.4);
     /* رنگ دسته هنگام هاور */
 }

 /* انیمیشن برای پیام‌های خطا */
 .alert {
     position: fixed;
     top: -100px;
     left: 50%;
     transform: translateX(-50%);
     z-index: 10000;
     width: 90%;
     max-width: 400px;
     padding: 15px 20px;
     border-radius: 8px;
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
     display: flex;
     align-items: center;
     animation: slideIn 0.5s forwards, fadeOut 0.5s 9.5s forwards;
 }

 /* انیمیشن برای انواع مختلف پیام‌ها */
 .alert-danger {
     background: linear-gradient(135deg, #ff4d4d, #f44336);
     color: white;
 }

 .alert-success {
     background: linear-gradient(135deg, #4CAF50, #2E7D32);
     color: white;
     max-width: 450px;
 }

 .alert-info {
     background: linear-gradient(135deg, #2196F3, #1565C0);
     color: white;
 }

 /* تعریف انیمیشن‌ها */
 @keyframes slideIn {
     from {
         top: -100px;
         opacity: 0;
     }

     to {
         top: 20px;
         opacity: 1;
     }
 }

 @keyframes fadeOut {
     from {
         top: 20px;
         opacity: 1;
     }

     to {
         top: -100px;
         opacity: 0;
     }
 }

 /* آیکون‌ها */
 .alert:before {
     content: "";
     display: inline-block;
     margin-right: 10px;
     width: 20px;
     height: 20px;
     background-size: contain;
     background-repeat: no-repeat;
 }

 .alert-danger:before {
     background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-2h2v2zm0-4h-2V7h2v6z'/%3E%3C/svg%3E");
 }

 .alert-success:before {
     background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-2 15l-5-5 1.41-1.41L10 14.17l7.59-7.59L19 8l-9 9z'/%3E%3C/svg%3E");
 }

 .alert-info:before {
     background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm1 15h-2v-6h2v6zm0-8h-2V7h2v2z'/%3E%3C/svg%3E");
 }







 /* استایل برای پیام‌های فلش */
 .flash-message {
     position: fixed;
     top: 20px;
     left: 50%;
     transform: translateX(-50%);
     padding: 15px 25px;
     border-radius: 5px;
     color: white;
     z-index: 1000;
     box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
     animation: slideIn 0.3s, fadeOut 0.5s 4.5s;
 }

 .flash-success {
     background-color: #2ecc71;
 }

 .flash-error {
     background-color: #e74c3c;
 }

 @keyframes slideIn {
     from {
         top: -50px;
         opacity: 0;
     }

     to {
         top: 20px;
         opacity: 1;
     }
 }

 @keyframes fadeOut {
     from {
         opacity: 1;
     }

     to {
         opacity: 0;
     }
 }

 .auth-container {
     min-height: 100vh;
     display: flex;
     align-items: center;
     justify-content: center;
     background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
     position: relative;
     padding: 20px;
 }

 /* Background Shapes */
 .background-shapes {
     position: absolute;
     inset: 0;
     overflow: hidden;
     z-index: 1;
 }

 .shape {
     position: absolute;
     border-radius: 50%;
     background: rgba(255, 255, 255, 0.1);
     filter: blur(40px);
     animation: float 6s ease-in-out infinite;
 }

 .shape-1 {
     width: 300px;
     height: 300px;
     top: -150px;
     left: -150px;
     animation-delay: 0s;
 }

 .shape-2 {
     width: 200px;
     height: 200px;
     top: 50%;
     right: -100px;
     animation-delay: 2s;
 }

 .shape-3 {
     width: 400px;
     height: 400px;
     bottom: -200px;
     left: 50%;
     transform: translateX(-50%);
     animation-delay: 4s;
 }

 @keyframes float {

     0%,
     100% {
         transform: translateY(0px) rotate(0deg);
     }

     50% {
         transform: translateY(-20px) rotate(180deg);
     }
 }

 /* Auth Card */
 .auth-card {
     background: #2C2C2C;
     backdrop-filter: blur(20px);
     border-radius: 24px;
     width: 100%;
     max-width: 520px;
     min-width: 300px;
     box-shadow: 0 32px 64px rgba(0, 0, 0, 0.15);
     position: relative;
     z-index: 10;
     border: 1px solid rgba(255, 255, 255, 0.2);
     overflow: auto;
     margin: 20px;
 }

 ::-webkit-scrollbar {
     width: 0px;
     height: 10px;
 }

 /* Track */
 ::-webkit-scrollbar-track {
     box-shadow: none;
     border-radius: 102px;
 }

 /* Handle */
 ::-webkit-scrollbar-thumb {
     background: #636363;
     border-radius: 10px;
 }

 /* Handle on hover */
 ::-webkit-scrollbar-thumb:hover {
     background: #535353;
 }

 .auth-form {
     padding: 48px;
     opacity: 0;
     transform: translateX(100%);
     transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
 }

 .auth-form.active {
     opacity: 1;
     transform: translateX(0);
     position: relative;
 }

 .auth-form.slide-out-left {
     transform: translateX(-100%);
     opacity: 0;
 }



 .auth-button:disabled {
     cursor: not-allowed;
     filter: grayscale(1.1);
     transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
 }

 .auth-form.slide-out-right {
     transform: translateX(100%);
     opacity: 0;
 }

 .auth-header {
     text-align: center;
     margin-bottom: 40px;
 }

 .logo {
     display: flex;
     align-items: center;
     justify-content: center;
     gap: 12px;
     margin-bottom: 24px;
 }

 .logo-icon {
     width: 40px;
     height: 40px;
     color: #667eea;
 }

 .logo-text {
     font-size: 24px;
     font-weight: bold;
     color: #1f2937;
 }

 .auth-title {
     font-size: 32px;
     font-weight: bold;
     color: #ffffff;
     margin-bottom: 8px;
 }

 .auth-subtitle {
     color: #6b7280;
     font-size: 16px;
 }

 /* Form Styles */
 .form {
     display: flex;
     flex-direction: column;
     gap: 24px;
 }

 .form-row {
     display: grid;
     gap: 16px;
 }

 .form-group {
     display: flex;
     flex-direction: column;
     gap: 8px;
 }

 .form-group label {
     font-weight: 600;
     color: #ffffff;
     font-size: 14px;
 }

 .input-container {
     position: relative;
     display: flex;
     align-items: center;
 }

 .input-icon {
     position: absolute;
     left: 16px;
     width: 20px;
     height: 20px;
     color: #9ca3af;
     z-index: 2;
 }

 .input-container input {
     width: 100%;
     padding: 16px 16px 16px 48px;
     border: 2px solid #ffffff66;
     border-radius: 12px;
     font-size: 16px;
     transition: all 0.3s ease;
     background: #3f3f3f;
 }

 .input-container input:focus {
     outline: none;
     border-color: #ffffff;
     box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
 }

 .input-container input:focus+.input-icon {
     color: #667eea;
 }

 .toggle-password {
     position: absolute;
     right: 16px;
     background: none;
     border: none;
     cursor: pointer;
     padding: 4px;
     border-radius: 6px;
     transition: background 0.2s ease;
     z-index: 3;
 }

 .toggle-password:hover {
     background: #f3f4f621;
 }

 .eye-icon {
     width: 20px;
     height: 20px;
     color: #9ca3af;
 }

 .error-message {
     color: #ef4444;
     font-size: 14px;
     margin-top: 4px;
     opacity: 0;
     transition: opacity 0.3s ease;
 }

 .error-message.show {
     opacity: 1;
 }

 /* Password Strength */
 .password-strength {
     margin-top: 8px;
 }

 .strength-bar {
     width: 100%;
     height: 4px;
     background: #e5e7eb;
     border-radius: 2px;
     overflow: hidden;
     margin-bottom: 4px;
 }

 .strength-fill {
     height: 100%;
     width: 0%;
     transition: all 0.3s ease;
     border-radius: 2px;
 }

 .strength-fill.weak {
     width: 25%;
     background: #ef4444;
 }

 .strength-fill.fair {
     width: 50%;
     background: #f59e0b;
 }

 .strength-fill.good {
     width: 75%;
     background: #3b82f6;
 }

 .strength-fill.strong {
     width: 100%;
     background: #10b981;
 }

 .strength-text {
     font-size: 12px;
     color: #6b7280;
 }

 /* Form Options */
 .form-options {
     display: flex;
     justify-content: space-between;
     align-items: center;
     margin: -23px 0px 21px 0;
 }

 .checkbox-container {
     display: flex;
     align-items: flex-start;
     cursor: pointer;
     font-size: 14px;
     color: #374151;
     line-height: 1.4;
 }

 .checkbox-container input {
     display: none;
 }

 .checkmark {
     width: 20px;
     height: 20px;
     border: 2px solid #d1d5db;
     border-radius: 4px;
     margin-right: 8px;
     position: relative;
     transition: all 0.3s ease;
     flex-shrink: 0;
     margin-top: 2px;
 }

 .checkbox-container input:checked+.checkmark {
     background: #667eea;
     border-color: #667eea;
 }

 .checkbox-container input:checked+.checkmark::after {
     content: '';
     position: absolute;
     left: 6px;
     top: 2px;
     width: 6px;
     height: 10px;
     border: solid white;
     border-width: 0 2px 2px 0;
     transform: rotate(45deg);
 }

 .forgot-password,
 .terms-link {
     color: #ffffff;
     text-decoration: none;
     font-size: 14px;
     font-weight: 500;
     transition: color 0.3s ease;
 }

 .forgot-password:hover,
 .terms-link:hover {
     color: #e63946;
 }

 /* Auth Button */
 .auth-button {
     background: linear-gradient(135deg, #F44336 0%, #e63946 100%);
     color: white;
     border: none;
     padding: 16px;
     border-radius: 12px;
     font-size: 16px;
     font-weight: 600;
     cursor: pointer;
     transition: all 0.3s ease;
     position: relative;
     overflow: hidden;
 }

 .auth-button:hover {
     transform: translateY(-2px);
     box-shadow: 0 8px 25px rgb(232 59 68);
 }

 .auth-button:active {
     transform: translateY(0);
 }

 .auth-button.loading {
     pointer-events: none;
 }

 .button-text {
     transition: opacity 0.3s ease;
 }

 .auth-button.loading .button-text {
     opacity: 0;
 }

 .loading-spinner {
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%);
     opacity: 0;
     transition: opacity 0.3s ease;
 }

 .auth-button.loading .loading-spinner {
     opacity: 1;
 }

 .spinner {
     width: 20px;
     height: 20px;
     border: 2px solid rgba(255, 255, 255, 0.3);
     border-top: 2px solid white;
     border-radius: 50%;
     animation: spin 1s linear infinite;
 }

 @keyframes spin {
     0% {
         transform: rotate(0deg);
     }

     100% {
         transform: rotate(360deg);
     }
 }

 /* Divider */
 .divider {
     position: relative;
     text-align: center;
     margin: 32px 0;
     color: #9ca3af;
     font-size: 14px;
 }

 .divider::before {
     content: '';
     position: absolute;
     top: 50%;
     left: 0;
     right: 0;
     height: 1px;
     background: #e5e7eb;
 }

 .divider span {
     background: rgba(255, 255, 255, 0.95);
     padding: 0 16px;
     position: relative;
     z-index: 1;
 }

 /* Social Login */
 .social-login {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 12px;
 }

 .social-button {
     display: flex;
     align-items: center;
     justify-content: center;
     gap: 8px;
     padding: 12px;
     border: 2px solid #e5e7eb;
     border-radius: 12px;
     background: white;
     color: #374151;
     font-weight: 500;
     cursor: pointer;
     transition: all 0.3s ease;
 }

 .social-button:hover {
     border-color: #d1d5db;
     background: #f9fafb;
     transform: translateY(-1px);
 }

 .social-button svg {
     width: 20px;
     height: 20px;
 }

 .social-button.google:hover {
     border-color: #ea4335;
     color: #ea4335;
 }

 .social-button.microsoft:hover {
     border-color: #0078d4;
     color: #0078d4;
 }

 /* Switch Form */
 .switch-form {
     text-align: center;
     margin-top: 24px;
 }

 .switch-form p {
     color: #6b7280;
     font-size: 14px;
 }

 .switch-form a {
     color: #667eea;
     text-decoration: none;
     font-weight: 600;
     transition: color 0.3s ease;
 }

 .switch-form a:hover {
     color: #5a67d8;
 }

 /* Success Message */
 .success-message {
     position: fixed;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
     background: rgba(0, 0, 0, 0.5);
     display: flex;
     align-items: center;
     justify-content: center;
     z-index: 1000;
     opacity: 0;
     visibility: hidden;
     transition: all 0.3s ease;
 }

 .success-message.show {
     opacity: 1;
     visibility: visible;
 }

 .success-content {
     background: white;
     padding: 48px;
     border-radius: 24px;
     text-align: center;
     max-width: 400px;
     margin: 20px;
     box-shadow: 0 32px 64px rgba(0, 0, 0, 0.15);
     transform: scale(0.9);
     transition: transform 0.3s ease;
 }

 .success-message.show .success-content {
     transform: scale(1);
 }

 .success-icon {
     width: 64px;
     height: 64px;
     color: #10b981;
     margin: 0 auto 24px;
 }

 .success-content h2 {
     font-size: 24px;
     font-weight: bold;
     color: #1f2937;
     margin-bottom: 8px;
 }

 .success-content p {
     color: #6b7280;
     font-size: 16px;
 }

 /* Responsive Design */
 @media (max-width: 640px) {
     .auth-card {
         margin: 20px;
         border-radius: 20px;
     }

     .auth-form {
         padding: 32px 24px;
     }

     .auth-title {
         font-size: 28px;
     }

     .form-row {
         grid-template-columns: 1fr;
         gap: 24px;
     }

     .social-login {
         grid-template-columns: 1fr;
     }

     .form-options {
         flex-direction: column;
         gap: 16px;
         align-items: flex-start;
     }

     .success-content {
         padding: 32px 24px;
     }
 }

 @media (max-width: 480px) {
     body {
         overflow: auto;
     }

     .auth-container {
         min-height: 100vh;
         padding: 16px;
     }

     .auth-form {
         padding: 24px 20px;
     }

     .auth-title {
         font-size: 24px;
     }

     .logo-text {
         font-size: 20px;
     }
 }


 .input-container.error input {
     border-color: #ef4444;
     box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
 }

 .input-container.error .input-icon {
     color: #ef4444;
 }

 .input-container.success input {
     border-color: #10b981;
     box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
 }

 .input-container.success .input-icon {
     color: #10b981;
 }

 img,
 video {
     max-width: 10%;
     height: auto;
 }

 /* Animation for form switching */
 .auth-card {
     position: relative;
     min-height: 600px;
 }


 #security-alert {
     position: fixed;
     top: -100px;
     left: 0;
     right: 0;
     background: #ff4444;
     color: white;
     padding: 15px 20px;
     text-align: center;
     font-family: 'Yekan', Arial, sans-serif;
     z-index: 99999;
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
     display: flex;
     justify-content: center;
     align-items: center;
     transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
 }

 #security-alert.alert-visible {
     top: 0;
 }

 #security-alert.alert-hidden {
     top: -100px;
 }

 .alert-content {
     display: flex;
     align-items: center;
     gap: 12px;
     max-width: 1200px;
     width: 100%;
     justify-content: center;
 }

 #security-alert svg {
     animation: shake 0.5s cubic-bezier(.36, .07, .19, .97) both;
 }

 @keyframes shake {

     0%,
     100% {
         transform: translateX(0);
     }

     20% {
         transform: translateX(-5px);
     }

     40% {
         transform: translateX(5px);
     }

     60% {
         transform: translateX(-5px);
     }

     80% {
         transform: translateX(5px);
     }
 }


 @keyframes float {

     0%,
     100% {
         transform: translateY(0px) rotate(0deg);
     }

     50% {
         transform: translateY(-20px) rotate(180deg);
     }
 }