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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #ffffff 0%, #f7f6f6 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .login-container {
            max-width: 420px;
            width: 100%;
            background: white;
            border: none;                 /* border removed */
            padding: 30px;
            position: relative;
            border-radius: 20px;         /* anchor for back arrow */
        }

        /* Back arrow */
        .back-arrow {
            position: absolute;
            top: 15px;
            left: 15px;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #2c3e50;
            background: #f5f5f5;
            border-radius: 50%;
            text-decoration: none;
            font-size: 15px;
            transition: all 0.2s ease;
        }

        .back-arrow:hover {
            background: #ff6b35;
            color: #ffffff;
            transform: translateX(-2px);
        }

        .login-header {
            text-align: center;
            margin-bottom: 25px;
            padding-top: 10px;
        }

        .login-header img {
            border-radius: 100%;
            height: 80px;
            width: 80px;
            margin-bottom: 10px;
            border: 1px solid orange;
        }

        .login-header h1 {
            font-size: 28px;
            color: #2c3e50;
            margin-bottom: 5px;
        }

        .login-header p {
            color: #7f8c8d;
            font-size: 13px;
        }

        .success-message {
            background: #d4edda;
            color: #155724;
            padding: 12px;
            margin-bottom: 20px;
            border: 1px solid #c3e6cb;
            text-align: center;
            animation: slideDown 0.5s ease-out;
        }

        .error-message {
            background: #f8d7da;
            color: #721c24;
            padding: 12px;
            margin-bottom: 20px;
            border: 1px solid #f5c6cb;
            text-align: center;
            animation: slideDown 0.5s ease-out;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .success-message i, .error-message i {
            margin-right: 10px;
        }

        .verification-warning {
            background: #fff3cd;
            color: #856404;
            padding: 12px;
            margin-bottom: 20px;
            border: 1px solid #ffeeba;
            text-align: center;
            font-size: 13px;
        }

        .resend-link {
            color: #ff6b35;
            text-decoration: underline;
            font-weight: bold;
            margin-left: 10px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 12px;
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 5px;
        }

        .input-with-icon {
            position: relative;
        }

        .input-with-icon i:first-child {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 10px 12px 10px 38px;
            border: 1px solid #e0e0e0;
            font-size: 14px;
            transition: all 0.2s;
        }

        .form-control:focus {
            outline: none;
            border-color: #ff6b35;
        }

        .password-toggle {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            cursor: pointer;
            color: #7f8c8d;
        }

        .forgot-password {
            text-align: right;
            margin-bottom: 20px;
        }

        .forgot-password a {
            color: #7f8c8d;
            font-size: 12px;
            text-decoration: none;
        }

        .forgot-password a:hover {
            color: #ff6b35;
        }

        .btn {
            width: 100%;
            padding: 12px;
            background: #ff6b35;
            color: white;
            border: none;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            border-radius: 50px;          /* rounded button */
        }

        .btn:hover {
            background: #e55a2a;
        }

        .login-hint {
            text-align: center;
            margin-top: 15px;
            font-size: 11px;
            color: #7f8c8d;
        }

        .register-link {
            text-align: center;
            margin-top: 20px;
            font-size: 13px;
            color: #7f8c8d;
        }

        .register-link a {
            color: #ff6b35;
            text-decoration: none;
            font-weight: 500;
        }

        .loading {
            text-align: center;
            margin-top: 20px;
        }

        .loading-spinner {
            width: 30px;
            height: 30px;
            border: 3px solid #e0e0e0;
            border-top-color: #ff6b35;
            border-radius: 50%;
            margin: 0 auto 10px;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        hr {
            margin: 20px 0;
            border: none;
            border-top: 1px solid #e0e0e0;
        }

        @media (max-width: 480px) {
            .login-container {
                padding: 20px;
            }

            .back-arrow {
                top: 10px;
                left: 10px;
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
        }